| Message ID | 6541121f0c048f3ae707de44eb45e2729af7a831.1591253353.git.xji@analogixsemi.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add initial support for slimport anx7625 | expand |
On Thu, Jun 04, 2020 at 11:08:05AM +0300, Laurent Pinchart wrote: > Hello Xin, > > Thank you for the patch. > > On Thu, Jun 04, 2020 at 03:58:05PM +0800, Xin Ji wrote: > > The ANX7625 is an ultra-low power 4K Mobile HD Transmitter designed > > for portable device. It converts MIPI DSI/DPI to DisplayPort 1.3 4K. > > > > Signed-off-by: Xin Ji <xji@analogixsemi.com> > > --- > > drivers/gpu/drm/bridge/analogix/Kconfig | 9 + > > drivers/gpu/drm/bridge/analogix/Makefile | 1 + > > drivers/gpu/drm/bridge/analogix/anx7625.c | 1961 +++++++++++++++++++++++++++++ > > drivers/gpu/drm/bridge/analogix/anx7625.h | 397 ++++++ > > 4 files changed, 2368 insertions(+) > > create mode 100644 drivers/gpu/drm/bridge/analogix/anx7625.c > > create mode 100644 drivers/gpu/drm/bridge/analogix/anx7625.h > > > > diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig > > index e1fa7d8..024ea2a 100644 > > --- a/drivers/gpu/drm/bridge/analogix/Kconfig > > +++ b/drivers/gpu/drm/bridge/analogix/Kconfig > > @@ -25,3 +25,12 @@ config DRM_ANALOGIX_ANX78XX > > config DRM_ANALOGIX_DP > > tristate > > depends on DRM > > + > > +config DRM_ANALOGIX_ANX7625 > > + tristate "Analogix Anx7625 MIPI to DP interface support" > > + depends on DRM > > + depends on OF > > + help > > + ANX7625 is an ultra-low power 4K mobile HD transmitter > > + designed for portable devices. It converts MIPI/DPI to > > + DisplayPort1.3 4K. > > diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile > > index 97669b3..44da392 100644 > > --- a/drivers/gpu/drm/bridge/analogix/Makefile > > +++ b/drivers/gpu/drm/bridge/analogix/Makefile > > @@ -1,5 +1,6 @@ > > # SPDX-License-Identifier: GPL-2.0-only > > analogix_dp-objs := analogix_dp_core.o analogix_dp_reg.o analogix-i2c-dptx.o > > obj-$(CONFIG_DRM_ANALOGIX_ANX6345) += analogix-anx6345.o > > +obj-$(CONFIG_DRM_ANALOGIX_ANX7625) += anx7625.o > > obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o > > obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp.o > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c > > new file mode 100644 > > index 0000000..f1cc6bb > > --- /dev/null > > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c > > @@ -0,0 +1,1961 @@ > > +// SPDX-License-Identifier: GPL-2.0-only > > +/* > > + * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. > > + * > > + */ > > +#include <linux/gcd.h> > > +#include <linux/gpio/consumer.h> > > +#include <linux/i2c.h> > > +#include <linux/interrupt.h> > > +#include <linux/iopoll.h> > > +#include <linux/kernel.h> > > +#include <linux/module.h> > > +#include <linux/mutex.h> > > +#include <linux/slab.h> > > +#include <linux/types.h> > > +#include <linux/workqueue.h> > > + > > +#include <linux/of_gpio.h> > > +#include <linux/of_graph.h> > > +#include <linux/of_platform.h> > > + > > +#include <drm/drm_atomic_helper.h> > > +#include <drm/drm_bridge.h> > > +#include <drm/drm_crtc_helper.h> > > +#include <drm/drm_dp_helper.h> > > +#include <drm/drm_edid.h> > > +#include <drm/drm_mipi_dsi.h> > > +#include <drm/drm_panel.h> > > +#include <drm/drm_print.h> > > +#include <drm/drm_probe_helper.h> > > + > > +#include <video/display_timing.h> > > + > > +#include "anx7625.h" > > + > > +/* > > + * There is a sync issue while access I2C register between AP(CPU) and > > + * internal firmware(OCM), to avoid the race condition, AP should access > > + * the reserved slave address before slave address occurs changes. > > + */ > > +static int i2c_access_workaround(struct anx7625_data *ctx, > > + struct i2c_client *client) > > +{ > > + u8 offset; > > + struct device *dev = &client->dev; > > + int ret; > > + > > + if (client == ctx->last_client) > > + return 0; > > + > > + ctx->last_client = client; > > + > > + if (client == ctx->i2c.tcpc_client) > > + offset = RSVD_00_ADDR; > > + else if (client == ctx->i2c.tx_p0_client) > > + offset = RSVD_D1_ADDR; > > + else if (client == ctx->i2c.tx_p1_client) > > + offset = RSVD_60_ADDR; > > + else if (client == ctx->i2c.rx_p0_client) > > + offset = RSVD_39_ADDR; > > + else if (client == ctx->i2c.rx_p1_client) > > + offset = RSVD_7F_ADDR; > > + else > > + offset = RSVD_00_ADDR; > > + > > + ret = i2c_smbus_write_byte_data(client, offset, 0x00); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, > > + "fail to access i2c id=%x\n:%x", > > + client->addr, offset); > > + > > + return ret; > > +} > > + > > +static int anx7625_reg_read(struct anx7625_data *ctx, > > + struct i2c_client *client, u8 reg_addr) > > +{ > > + int ret; > > + struct device *dev = &client->dev; > > + > > + i2c_access_workaround(ctx, client); > > + > > + ret = i2c_smbus_read_byte_data(client, reg_addr); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "read i2c fail id=%x:%x\n", > > + client->addr, reg_addr); > > + > > + return ret; > > +} > > + > > +static int anx7625_reg_block_read(struct anx7625_data *ctx, > > + struct i2c_client *client, > > + u8 reg_addr, u8 len, u8 *buf) > > +{ > > + int ret; > > + struct device *dev = &client->dev; > > + > > + i2c_access_workaround(ctx, client); > > + > > + ret = i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "read i2c block fail id=%x:%x\n", > > + client->addr, reg_addr); > > + > > + return ret; > > +} > > + > > +static int anx7625_reg_write(struct anx7625_data *ctx, > > + struct i2c_client *client, > > + u8 reg_addr, u8 reg_val) > > +{ > > + int ret; > > + struct device *dev = &client->dev; > > + > > + i2c_access_workaround(ctx, client); > > + > > + ret = i2c_smbus_write_byte_data(client, reg_addr, reg_val); > > + > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "fail to write i2c id=%x\n:%x", > > + client->addr, reg_addr); > > + > > + return ret; > > +} > > + > > +static int anx7625_write_or(struct anx7625_data *ctx, > > + struct i2c_client *client, > > + u8 offset, u8 mask) > > +{ > > + int val; > > + > > + val = anx7625_reg_read(ctx, client, offset); > > + if (val < 0) > > + return val; > > + > > + return anx7625_reg_write(ctx, client, offset, (val | (mask))); > > +} > > + > > +static int anx7625_write_and(struct anx7625_data *ctx, > > + struct i2c_client *client, > > + u8 offset, u8 mask) > > +{ > > + int val; > > + > > + val = anx7625_reg_read(ctx, client, offset); > > + if (val < 0) > > + return val; > > + > > + return anx7625_reg_write(ctx, client, offset, (val & (mask))); > > +} > > + > > +static int anx7625_write_and_or(struct anx7625_data *ctx, > > + struct i2c_client *client, > > + u8 offset, u8 and_mask, u8 or_mask) > > +{ > > + int val; > > + > > + val = anx7625_reg_read(ctx, client, offset); > > + if (val < 0) > > + return val; > > + > > + return anx7625_reg_write(ctx, client, > > + offset, (val & and_mask) | (or_mask)); > > +} > > + > > +static int anx7625_read_ctrl_status_p0(struct anx7625_data *ctx) > > +{ > > + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS); > > +} > > + > > +static int wait_aux_op_finish(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + int val; > > + int ret; > > + > > + ret = readx_poll_timeout(anx7625_read_ctrl_status_p0, > > + ctx, val, > > + (!(val & AP_AUX_CTRL_OP_EN) || (val < 0)), > > + 2000, > > + 2000 * 150); > > + if (ret) { > > + DRM_DEV_ERROR(dev, "aux operation fail!\n"); > > + return -EIO; > > + } > > + > > + val = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_CTRL_STATUS); > > + if (val < 0 || (val & 0x0F)) { > > + DRM_DEV_ERROR(dev, "aux status %02x\n", val); > > + val = -EIO; > > + } > > + > > + return val; > > +} > > + > > +static int anx7625_video_mute_control(struct anx7625_data *ctx, > > + u8 status) > > +{ > > + int ret; > > + > > + if (status) { > > + /* Set mute on flag */ > > + ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, AP_MIPI_MUTE); > > + /* Clear mipi RX en */ > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, (u8)~AP_MIPI_RX_EN); > > + } else { > > + /* Mute off flag */ > > + ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, (u8)~AP_MIPI_MUTE); > > + /* Set MIPI RX EN */ > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, AP_MIPI_RX_EN); > > + } > > + > > + return ret; > > +} > > + > > +static int anx7625_config_audio_input(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + /* Channel num */ > > + ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, > > + AUDIO_CHANNEL_STATUS_6, I2S_CH_2 << 5); > > + > > + /* FS */ > > + ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, > > + AUDIO_CHANNEL_STATUS_4, > > + 0xf0, AUDIO_FS_48K); > > + /* Word length */ > > + ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, > > + AUDIO_CHANNEL_STATUS_5, > > + 0xf0, AUDIO_W_LEN_24_24MAX); > > + /* I2S */ > > + ret |= anx7625_write_or(ctx, ctx->i2c.tx_p2_client, > > + AUDIO_CHANNEL_STATUS_6, I2S_SLAVE_MODE); > > + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, > > + AUDIO_CONTROL_REGISTER, ~TDM_TIMING_MODE); > > + /* Audio change flag */ > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, AP_AUDIO_CHG); > > + > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "fail to config audio.\n"); > > + > > + return ret; > > +} > > + > > +/* Reduction of fraction a/b */ > > +static void anx7625_reduction_of_a_fraction(unsigned long *a, unsigned long *b) > > +{ > > + unsigned long gcd_num; > > + unsigned long tmp_a, tmp_b; > > + u32 i = 1; > > + > > + gcd_num = gcd(*a, *b); > > + *a /= gcd_num; > > + *b /= gcd_num; > > + > > + tmp_a = *a; > > + tmp_b = *b; > > + > > + while ((*a > MAX_UNSIGNED_24BIT) || (*b > MAX_UNSIGNED_24BIT)) { > > + i++; > > + *a = tmp_a / i; > > + *b = tmp_b / i; > > + } > > + > > + /* > > + * In the end, make a, b larger to have higher ODFC PLL > > + * output frequency accuracy > > + */ > > + while ((*a < MAX_UNSIGNED_24BIT) && (*b < MAX_UNSIGNED_24BIT)) { > > + *a <<= 1; > > + *b <<= 1; > > + } > > + > > + *a >>= 1; > > + *b >>= 1; > > +} > > + > > +static int anx7625_calculate_m_n(u32 pixelclock, > > + unsigned long *m, > > + unsigned long *n, > > + u8 *post_divider) > > +{ > > + if (pixelclock > PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN) { > > + /* Pixel clock frequency is too high */ > > + DRM_ERROR("pixelclock too high, act(%d), maximum(%lu)\n", > > + pixelclock, > > + PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN); > > + return -EINVAL; > > + } > > + > > + if (pixelclock < PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX) { > > + /* Pixel clock frequency is too low */ > > + DRM_ERROR("pixelclock too low, act(%d), maximum(%lu)\n", > > + pixelclock, > > + PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX); > > + return -EINVAL; > > + } > > + > > + for (*post_divider = 1; > > + pixelclock < (PLL_OUT_FREQ_MIN / (*post_divider));) > > + *post_divider += 1; > > + > > + if (*post_divider > POST_DIVIDER_MAX) { > > + for (*post_divider = 1; > > + (pixelclock < > > + (PLL_OUT_FREQ_ABS_MIN / (*post_divider)));) > > + *post_divider += 1; > > + > > + if (*post_divider > POST_DIVIDER_MAX) { > > + DRM_ERROR("cannot find property post_divider(%d)\n", > > + *post_divider); > > + return -EDOM; > > + } > > + } > > + > > + /* Patch to improve the accuracy */ > > + if (*post_divider == 7) { > > + /* 27,000,000 is not divisible by 7 */ > > + *post_divider = 8; > > + } else if (*post_divider == 11) { > > + /* 27,000,000 is not divisible by 11 */ > > + *post_divider = 12; > > + } else if ((*post_divider == 13) || (*post_divider == 14)) { > > + /* 27,000,000 is not divisible by 13 or 14 */ > > + *post_divider = 15; > > + } > > + > > + if (pixelclock * (*post_divider) > PLL_OUT_FREQ_ABS_MAX) { > > + DRM_ERROR("act clock(%u) large than maximum(%lu)\n", > > + pixelclock * (*post_divider), > > + PLL_OUT_FREQ_ABS_MAX); > > + return -EDOM; > > + } > > + > > + *m = pixelclock; > > + *n = XTAL_FRQ / (*post_divider); > > + > > + anx7625_reduction_of_a_fraction(m, n); > > + > > + return 0; > > +} > > + > > +static int anx7625_odfc_config(struct anx7625_data *ctx, > > + u8 post_divider) > > +{ > > + int ret; > > + struct device *dev = &ctx->client->dev; > > + > > + /* Config input reference clock frequency 27MHz/19.2MHz */ > > + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, > > + ~(REF_CLK_27000KHZ << MIPI_FREF_D_IND)); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, > > + (REF_CLK_27000KHZ << MIPI_FREF_D_IND)); > > + /* Post divider */ > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, > > + MIPI_DIGITAL_PLL_8, 0x0f); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_8, > > + post_divider << 4); > > + > > + /* Add patch for MIS2-125 (5pcs ANX7625 fail ATE MBIST test) */ > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, > > + ~MIPI_PLL_VCO_TUNE_REG_VAL); > > + > > + /* Reset ODFC PLL */ > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, > > + ~MIPI_PLL_RESET_N); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, > > + MIPI_PLL_RESET_N); > > + > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "IO error.\n"); > > + > > + return ret; > > +} > > + > > +static int anx7625_dsi_video_timing_config(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + unsigned long m, n; > > + u16 htotal; > > + int ret; > > + u8 post_divider = 0; > > + > > + ret = anx7625_calculate_m_n(ctx->dt.pixelclock.min * 1000, > > + &m, &n, &post_divider); > > + > > + if (ret) { > > + DRM_DEV_ERROR(dev, "cannot get property m n value.\n"); > > + return ret; > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "compute M(%lu), N(%lu), divider(%d).\n", > > + m, n, post_divider); > > + > > + /* Configure pixel clock */ > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_L, > > + (ctx->dt.pixelclock.min / 1000) & 0xFF); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_H, > > + (ctx->dt.pixelclock.min / 1000) >> 8); > > + /* Lane count */ > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, > > + MIPI_LANE_CTRL_0, 0xfc); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, > > + MIPI_LANE_CTRL_0, 3); > > + > > + /* Htotal */ > > + htotal = ctx->dt.hactive.min + ctx->dt.hfront_porch.min + > > + ctx->dt.hback_porch.min + ctx->dt.hsync_len.min; > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_TOTAL_PIXELS_L, htotal & 0xFF); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_TOTAL_PIXELS_H, htotal >> 8); > > + /* Hactive */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_ACTIVE_PIXELS_L, ctx->dt.hactive.min & 0xFF); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_ACTIVE_PIXELS_H, ctx->dt.hactive.min >> 8); > > + /* HFP */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_FRONT_PORCH_L, ctx->dt.hfront_porch.min); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_FRONT_PORCH_H, > > + ctx->dt.hfront_porch.min >> 8); > > + /* HWS */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_SYNC_WIDTH_L, ctx->dt.hsync_len.min); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_SYNC_WIDTH_H, ctx->dt.hsync_len.min >> 8); > > + /* HBP */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_BACK_PORCH_L, ctx->dt.hback_porch.min); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + HORIZONTAL_BACK_PORCH_H, ctx->dt.hback_porch.min >> 8); > > + /* Vactive */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_L, > > + ctx->dt.vactive.min); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_H, > > + ctx->dt.vactive.min >> 8); > > + /* VFP */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + VERTICAL_FRONT_PORCH, ctx->dt.vfront_porch.min); > > + /* VWS */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + VERTICAL_SYNC_WIDTH, ctx->dt.vsync_len.min); > > + /* VBP */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, > > + VERTICAL_BACK_PORCH, ctx->dt.vback_porch.min); > > + /* M value */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_PLL_M_NUM_23_16, (m >> 16) & 0xff); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_PLL_M_NUM_15_8, (m >> 8) & 0xff); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_PLL_M_NUM_7_0, (m & 0xff)); > > + /* N value */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_PLL_N_NUM_23_16, (n >> 16) & 0xff); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_PLL_N_NUM_15_8, (n >> 8) & 0xff); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_7_0, > > + (n & 0xff)); > > + /* Diff */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_DIGITAL_ADJ_1, 0x3D); > > + > > + ret |= anx7625_odfc_config(ctx, post_divider - 1); > > + > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "mipi dsi setup IO error.\n"); > > + > > + return ret; > > +} > > + > > +static int anx7625_swap_dsi_lane3(struct anx7625_data *ctx) > > +{ > > + int val; > > + struct device *dev = &ctx->client->dev; > > + > > + /* Swap MIPI-DSI data lane 3 P and N */ > > + val = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP); > > + if (val < 0) { > > + DRM_DEV_ERROR(dev, "IO error : access MIPI_SWAP.\n"); > > + return -EIO; > > + } > > + > > + val |= (1 << MIPI_SWAP_CH3); > > + return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP, val); > > +} > > + > > +static int anx7625_api_dsi_config(struct anx7625_data *ctx) > > + > > +{ > > + int val, ret; > > + struct device *dev = &ctx->client->dev; > > + > > + /* Swap MIPI-DSI data lane 3 P and N */ > > + ret = anx7625_swap_dsi_lane3(ctx); > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "IO error : swap dsi lane 3 fail.\n"); > > + return ret; > > + } > > + > > + /* DSI clock settings */ > > + val = (0 << MIPI_HS_PWD_CLK) | > > + (0 << MIPI_HS_RT_CLK) | > > + (0 << MIPI_PD_CLK) | > > + (1 << MIPI_CLK_RT_MANUAL_PD_EN) | > > + (1 << MIPI_CLK_HS_MANUAL_PD_EN) | > > + (0 << MIPI_CLK_DET_DET_BYPASS) | > > + (0 << MIPI_CLK_MISS_CTRL) | > > + (0 << MIPI_PD_LPTX_CH_MANUAL_PD_EN); > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_PHY_CONTROL_3, val); > > + > > + /* > > + * Decreased HS prepare timing delay from 160ns to 80ns work with > > + * a) Dragon board 810 series (Qualcomm AP) > > + * b) Moving Pixel DSI source (PG3A pattern generator + > > + * P332 D-PHY Probe) default D-PHY timing > > + * 5ns/step > > + */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_TIME_HS_PRPR, 0x10); > > + > > + /* Enable DSI mode*/ > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_18, > > + SELECT_DSI << MIPI_DPI_SELECT); > > + > > + ret |= anx7625_dsi_video_timing_config(ctx); > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "dsi video timing config fail\n"); > > + return ret; > > + } > > + > > + /* Toggle m, n ready */ > > + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, > > + ~(MIPI_M_NUM_READY | MIPI_N_NUM_READY)); > > + usleep_range(1000, 1100); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, > > + MIPI_M_NUM_READY | MIPI_N_NUM_READY); > > + > > + /* Configure integer stable register */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_VIDEO_STABLE_CNT, 0x02); > > + /* Power on MIPI RX */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_LANE_CTRL_10, 0x00); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, > > + MIPI_LANE_CTRL_10, 0x80); > > + > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "IO error : mipi dsi enable init fail.\n"); > > + > > + return ret; > > +} > > + > > +static int anx7625_dsi_config(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "config dsi.\n"); > > + > > + /* DSC disable */ > > + ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, > > + R_DSC_CTRL_0, ~DSC_EN); > > + > > + ret |= anx7625_api_dsi_config(ctx); > > + > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "IO error : api dsi config error.\n"); > > + return ret; > > + } > > + > > + /* Set MIPI RX EN */ > > + ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, AP_MIPI_RX_EN); > > + /* Clear mute flag */ > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, (u8)~AP_MIPI_MUTE); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "IO error : enable mipi rx fail.\n"); > > + else > > + DRM_DEV_DEBUG_DRIVER(dev, "success to config DSI\n"); > > + > > + return ret; > > +} > > + > > +static void anx7625_dp_start(struct anx7625_data *ctx) > > +{ > > + int ret; > > + struct device *dev = &ctx->client->dev; > > + > > + if (!ctx->display_timing_valid) { > > + DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n"); > > + return; > > + } > > + > > + anx7625_config_audio_input(ctx); > > + > > + ret = anx7625_dsi_config(ctx); > > + > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "MIPI phy setup error.\n"); > > +} > > + > > +static void anx7625_dp_stop(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "stop dp output\n"); > > + > > + /* > > + * Video disable: 0x72:08 bit 7 = 0; > > + * Audio disable: 0x70:87 bit 0 = 0; > > + */ > > + ret = anx7625_write_and(ctx, ctx->i2c.tx_p0_client, 0x87, 0xfe); > > + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 0x08, 0x7f); > > + > > + ret |= anx7625_video_mute_control(ctx, 1); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "IO error : mute video fail\n"); > > +} > > + > > +static int sp_tx_rst_aux(struct anx7625_data *ctx) > > +{ > > + int ret; > > + > > + ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, > > + AUX_RST); > > + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, > > + ~AUX_RST); > > + return ret; > > +} > > + > > +static int sp_tx_aux_wr(struct anx7625_data *ctx, u8 offset) > > +{ > > + int ret; > > + > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_BUFF_START, offset); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_COMMAND, 0x04); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); > > + return (ret | wait_aux_op_finish(ctx)); > > +} > > + > > +static int sp_tx_aux_rd(struct anx7625_data *ctx, u8 len_cmd) > > +{ > > + int ret; > > + > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_COMMAND, len_cmd); > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); > > + return (ret | wait_aux_op_finish(ctx)); > > +} > > + > > +static int sp_tx_get_edid_block(struct anx7625_data *ctx) > > +{ > > + int c = 0; > > + struct device *dev = &ctx->client->dev; > > + > > + sp_tx_aux_wr(ctx, 0x7e); > > + sp_tx_aux_rd(ctx, 0x01); > > + c = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START); > > + if (c < 0) { > > + DRM_DEV_ERROR(dev, "IO error : access AUX BUFF.\n"); > > + return -EIO; > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, " EDID Block = %d\n", c + 1); > > + > > + if (c > MAX_EDID_BLOCK) > > + c = 1; > > + > > + return c; > > +} > > + > > +static int edid_read(struct anx7625_data *ctx, > > + u8 offset, u8 *pblock_buf) > > +{ > > + int ret, cnt; > > + struct device *dev = &ctx->client->dev; > > + > > + for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { > > + sp_tx_aux_wr(ctx, offset); > > + /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ > > + ret = sp_tx_aux_rd(ctx, 0xf1); > > + > > + if (ret) { > > + sp_tx_rst_aux(ctx); > > + DRM_DEV_DEBUG_DRIVER(dev, "edid read fail, reset!\n"); > > + } else { > > + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_BUFF_START, > > + MAX_DPCD_BUFFER_SIZE, > > + pblock_buf); > > + if (ret > 0) > > + break; > > + } > > + } > > + > > + if (cnt > EDID_TRY_CNT) > > + return -EIO; > > + > > + return 0; > > +} > > + > > +static int segments_edid_read(struct anx7625_data *ctx, > > + u8 segment, u8 *buf, u8 offset) > > +{ > > + u8 cnt; > > + int ret; > > + struct device *dev = &ctx->client->dev; > > + > > + /* Write address only */ > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_ADDR_7_0, 0x30); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_COMMAND, 0x04); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_CTRL_STATUS, > > + AP_AUX_CTRL_ADDRONLY | AP_AUX_CTRL_OP_EN); > > + > > + ret |= wait_aux_op_finish(ctx); > > + /* Write segment address */ > > + ret |= sp_tx_aux_wr(ctx, segment); > > + /* Data read */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_ADDR_7_0, 0x50); > > + if (ret) { > > + DRM_DEV_ERROR(dev, "IO error : aux initial fail.\n"); > > + return ret; > > + } > > + > > + for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { > > + sp_tx_aux_wr(ctx, offset); > > + /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ > > + ret = sp_tx_aux_rd(ctx, 0xf1); > > + > > + if (ret) { > > + ret = sp_tx_rst_aux(ctx); > > + DRM_DEV_ERROR(dev, "segment read fail, reset!\n"); > > + } else { > > + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_BUFF_START, > > + MAX_DPCD_BUFFER_SIZE, buf); > > + if (ret > 0) > > + break; > > + } > > + } > > + > > + if (cnt > EDID_TRY_CNT) > > + return -EIO; > > + > > + return 0; > > +} > > + > > +static int sp_tx_edid_read(struct anx7625_data *ctx, > > + u8 *pedid_blocks_buf) > > +{ > > + u8 offset, edid_pos; > > + int count, blocks_num; > > + u8 pblock_buf[MAX_DPCD_BUFFER_SIZE]; > > + u8 i, j; > > + u8 g_edid_break = 0; > > + int ret; > > + struct device *dev = &ctx->client->dev; > > + > > + /* Address initial */ > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_ADDR_7_0, 0x50); > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_ADDR_15_8, 0); > > + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, > > + AP_AUX_ADDR_19_16, 0xf0); > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "access aux channel IO error.\n"); > > + return -EIO; > > + } > > + > > + blocks_num = sp_tx_get_edid_block(ctx); > > + if (blocks_num < 0) > > + return blocks_num; > > + > > + count = 0; > > + > > + do { > > + switch (count) { > > + case 0: > > + case 1: > > + for (i = 0; i < 8; i++) { > > + offset = (i + count * 8) * MAX_DPCD_BUFFER_SIZE; > > + g_edid_break = edid_read(ctx, offset, > > + pblock_buf); > > + > > + if (g_edid_break) > > + break; > > + > > + memcpy(&pedid_blocks_buf[offset], > > + pblock_buf, > > + MAX_DPCD_BUFFER_SIZE); > > + } > > + > > + break; > > + case 2: > > + offset = 0x00; > > + > > + for (j = 0; j < 8; j++) { > > + edid_pos = (j + count * 8) * > > + MAX_DPCD_BUFFER_SIZE; > > + > > + if (g_edid_break == 1) > > + break; > > + > > + segments_edid_read(ctx, count / 2, > > + pblock_buf, offset); > > + memcpy(&pedid_blocks_buf[edid_pos], > > + pblock_buf, > > + MAX_DPCD_BUFFER_SIZE); > > + offset = offset + 0x10; > > + } > > + > > + break; > > + case 3: > > + offset = 0x80; > > + > > + for (j = 0; j < 8; j++) { > > + edid_pos = (j + count * 8) * > > + MAX_DPCD_BUFFER_SIZE; > > + if (g_edid_break == 1) > > + break; > > + > > + segments_edid_read(ctx, count / 2, > > + pblock_buf, offset); > > + memcpy(&pedid_blocks_buf[edid_pos], > > + pblock_buf, > > + MAX_DPCD_BUFFER_SIZE); > > + offset = offset + 0x10; > > + } > > + > > + break; > > + default: > > + break; > > + } > > + > > + count++; > > + > > + } while (blocks_num >= count); > > + > > + /* Check edid data */ > > + if (!drm_edid_is_valid((struct edid *)pedid_blocks_buf)) { > > + DRM_DEV_ERROR(dev, "WARNING! edid check fail!\n"); > > + return -EINVAL; > > + } > > + > > + /* Reset aux channel */ > > + sp_tx_rst_aux(ctx); > > + > > + return (blocks_num + 1); > > +} > > + > > +static void anx7625_power_on(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + > > + if (!ctx->pdata.low_power_mode) { > > + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); > > + return; > > + } > > + > > + /* Power on pin enable */ > > + gpiod_set_value(ctx->pdata.gpio_p_on, 1); > > + usleep_range(10000, 11000); > > + /* Power reset pin enable */ > > + gpiod_set_value(ctx->pdata.gpio_reset, 1); > > + usleep_range(10000, 11000); > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "power on !\n"); > > +} > > + > > +static void anx7625_power_standby(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + > > + if (!ctx->pdata.low_power_mode) { > > + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); > > + return; > > + } > > + > > + gpiod_set_value(ctx->pdata.gpio_reset, 0); > > + usleep_range(1000, 1100); > > + gpiod_set_value(ctx->pdata.gpio_p_on, 0); > > + usleep_range(1000, 1100); > > + DRM_DEV_DEBUG_DRIVER(dev, "power down\n"); > > +} > > + > > +/* Basic configurations of ANX7625 */ > > +static void anx7625_config(struct anx7625_data *ctx) > > +{ > > + anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + XTAL_FRQ_SEL, XTAL_FRQ_27M); > > +} > > + > > +static void anx7625_disable_pd_protocol(struct anx7625_data *ctx) > > +{ > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + /* Reset main ocm */ > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x40); > > + /* Disable PD */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + AP_AV_STATUS, AP_DISABLE_PD); > > + /* Release main ocm */ > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x00); > > + > > + if (ret < 0) > > + DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature fail.\n"); > > + else > > + DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature succeeded.\n"); > > +} > > + > > +static int anx7625_ocm_loading_check(struct anx7625_data *ctx) > > +{ > > + int ret; > > + struct device *dev = &ctx->client->dev; > > + > > + /* Check interface workable */ > > + ret = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, > > + FLASH_LOAD_STA); > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "IO error : access flash load.\n"); > > + return ret; > > + } > > + if ((ret & FLASH_LOAD_STA_CHK) != FLASH_LOAD_STA_CHK) > > + return -ENODEV; > > + > > + anx7625_disable_pd_protocol(ctx); > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "Firmware ver %02x%02x,", > > + anx7625_reg_read(ctx, > > + ctx->i2c.rx_p0_client, > > + OCM_FW_VERSION), > > + anx7625_reg_read(ctx, > > + ctx->i2c.rx_p0_client, > > + OCM_FW_REVERSION)); > > + DRM_DEV_DEBUG_DRIVER(dev, "Driver version %s\n", > > + ANX7625_DRV_VERSION); > > + > > + return 0; > > +} > > + > > +static void anx7625_power_on_init(struct anx7625_data *ctx) > > +{ > > + int retry_count, i; > > + > > + for (retry_count = 0; retry_count < 3; retry_count++) { > > + anx7625_power_on(ctx); > > + anx7625_config(ctx); > > + > > + for (i = 0; i < OCM_LOADING_TIME; i++) { > > + if (!anx7625_ocm_loading_check(ctx)) > > + return; > > + usleep_range(1000, 1100); > > + } > > + anx7625_power_standby(ctx); > > + } > > +} > > + > > +static void anx7625_chip_control(struct anx7625_data *ctx, int state) > > +{ > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "before set, power_state(%d).\n", > > + atomic_read(&ctx->power_status)); > > + > > + if (!ctx->pdata.low_power_mode) > > + return; > > + > > + if (state) { > > + atomic_inc(&ctx->power_status); > > + if (atomic_read(&ctx->power_status) == 1) > > + anx7625_power_on_init(ctx); > > + } else { > > + if (atomic_read(&ctx->power_status)) { > > + atomic_dec(&ctx->power_status); > > + > > + if (atomic_read(&ctx->power_status) == 0) > > + anx7625_power_standby(ctx); > > + } > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "after set, power_state(%d).\n", > > + atomic_read(&ctx->power_status)); > > +} > > + > > +static void anx7625_init_gpio(struct anx7625_data *platform) > > +{ > > + struct device *dev = &platform->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "init gpio\n"); > > + > > + /* Gpio for chip power enable */ > > + platform->pdata.gpio_p_on = > > + devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); > > + /* Gpio for chip reset */ > > + platform->pdata.gpio_reset = > > + devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); > > + > > + if (platform->pdata.gpio_p_on && platform->pdata.gpio_reset) { > > + platform->pdata.low_power_mode = 1; > > + DRM_DEV_DEBUG_DRIVER(dev, "low power mode, pon %d, reset %d.\n", > > + desc_to_gpio(platform->pdata.gpio_p_on), > > + desc_to_gpio(platform->pdata.gpio_reset)); > > + } else { > > + platform->pdata.low_power_mode = 0; > > + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode.\n"); > > + } > > +} > > + > > +static void anx7625_stop_dp_work(struct anx7625_data *ctx) > > +{ > > + ctx->hpd_status = 0; > > + ctx->hpd_high_cnt = 0; > > + ctx->display_timing_valid = 0; > > + > > + ctx->slimport_edid_p.edid_block_num = -1; > > + > > + if (ctx->pdata.low_power_mode == 0) > > + anx7625_disable_pd_protocol(ctx); > > +} > > + > > +static void anx7625_start_dp_work(struct anx7625_data *ctx) > > +{ > > + int ret; > > + struct device *dev = &ctx->client->dev; > > + > > + if (ctx->hpd_high_cnt >= 2) { > > + DRM_DEV_DEBUG_DRIVER(dev, "filter useless HPD\n"); > > + return; > > + } > > + > > + ctx->hpd_high_cnt++; > > + > > + /* Not support HDCP */ > > + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); > > + > > + /* Try auth flag */ > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10); > > + /* Interrupt for DRM */ > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01); > > + if (ret < 0) > > + return; > > + > > + ret = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, 0x86); > > + if (ret < 0) > > + return; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "Secure OCM version=%02x\n", ret); > > +} > > + > > +static int anx7625_read_hpd_status_p0(struct anx7625_data *ctx) > > +{ > > + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS); > > +} > > + > > +static void anx7625_hpd_polling(struct anx7625_data *ctx) > > +{ > > + int ret, val; > > + struct device *dev = &ctx->client->dev; > > + > > + if (atomic_read(&ctx->power_status) != 1) { > > + DRM_DEV_DEBUG_DRIVER(dev, "No need to poling HPD status.\n"); > > + return; > > + } > > + > > + ret = readx_poll_timeout(anx7625_read_hpd_status_p0, > > + ctx, val, > > + ((val & HPD_STATUS) || (val < 0)), > > + 5000, > > + 5000 * 100); > > + if (ret) { > > + DRM_DEV_ERROR(dev, "HPD polling timeout!\n"); > > + } else { > > + DRM_DEV_DEBUG_DRIVER(dev, "HPD raise up.\n"); > > + anx7625_reg_write(ctx, ctx->i2c.tcpc_client, > > + INTR_ALERT_1, 0xFF); > > + anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + INTERFACE_CHANGE_INT, 0); > > + } > > + > > + anx7625_start_dp_work(ctx); > > +} > > + > > +static void anx7625_disconnect_check(struct anx7625_data *ctx) > > +{ > > + if (atomic_read(&ctx->power_status) == 0) > > + anx7625_stop_dp_work(ctx); > > +} > > + > > +static void anx7625_low_power_mode_check(struct anx7625_data *ctx, > > + int state) > > +{ > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "low power mode check, state(%d).\n", state); > > + > > + if (ctx->pdata.low_power_mode) { > > + anx7625_chip_control(ctx, state); > > + if (state) > > + anx7625_hpd_polling(ctx); > > + else > > + anx7625_disconnect_check(ctx); > > + } > > +} > > + > > +static void dp_hpd_change_handler(struct anx7625_data *ctx, bool on) > > +{ > > + struct device *dev = &ctx->client->dev; > > + > > + /* HPD changed */ > > + DRM_DEV_DEBUG_DRIVER(dev, "dp_hpd_change_default_func: %d\n", > > + (u32)on); > > + > > + if (on == 0) { > > + DRM_DEV_DEBUG_DRIVER(dev, " HPD low\n"); > > + anx7625_stop_dp_work(ctx); > > + } else { > > + DRM_DEV_DEBUG_DRIVER(dev, " HPD high\n"); > > + anx7625_start_dp_work(ctx); > > + } > > + > > + ctx->hpd_status = 1; > > +} > > + > > +static int anx7625_hpd_change_detect(struct anx7625_data *ctx) > > +{ > > + int intr_vector, status; > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "power_status=%d\n", > > + (u32)atomic_read(&ctx->power_status)); > > + > > + status = anx7625_reg_write(ctx, ctx->i2c.tcpc_client, > > + INTR_ALERT_1, 0xFF); > > + if (status < 0) { > > + DRM_DEV_ERROR(dev, "cannot clear alert reg.\n"); > > + return status; > > + } > > + > > + intr_vector = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, > > + INTERFACE_CHANGE_INT); > > + if (intr_vector < 0) { > > + DRM_DEV_ERROR(dev, "cannot access interrupt change reg.\n"); > > + return intr_vector; > > + } > > + DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x44=%x\n", intr_vector); > > + status = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, > > + INTERFACE_CHANGE_INT, > > + intr_vector & (~intr_vector)); > > + if (status < 0) { > > + DRM_DEV_ERROR(dev, "cannot clear interrupt change reg.\n"); > > + return status; > > + } > > + > > + if (!(intr_vector & HPD_STATUS_CHANGE)) > > + return -ENOENT; > > + > > + status = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, > > + SYSTEM_STSTUS); > > + if (status < 0) { > > + DRM_DEV_ERROR(dev, "cannot clear interrupt status.\n"); > > + return status; > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x45=%x\n", status); > > + dp_hpd_change_handler(ctx, status & HPD_STATUS); > > + > > + return 0; > > +} > > + > > +static void anx7625_work_func(struct work_struct *work) > > +{ > > + int event; > > + struct anx7625_data *ctx = container_of(work, > > + struct anx7625_data, work); > > + > > + mutex_lock(&ctx->lock); > > + event = anx7625_hpd_change_detect(ctx); > > + mutex_unlock(&ctx->lock); > > + if (event < 0) > > + return; > > + > > + if (ctx->bridge_attached) > > + drm_helper_hpd_irq_event(ctx->connector.dev); > > +} > > + > > +static irqreturn_t anx7625_intr_hpd_isr(int irq, void *data) > > +{ > > + struct anx7625_data *ctx = (struct anx7625_data *)data; > > + > > + if (atomic_read(&ctx->power_status) != 1) > > + return IRQ_NONE; > > + > > + queue_work(ctx->workqueue, &ctx->work); > > + > > + return IRQ_HANDLED; > > +} > > + > > +static int anx7625_parse_dt(struct device *dev, > > + struct anx7625_platform_data *pdata) > > +{ > > + struct device_node *np = dev->of_node; > > + struct device_node *panel_node, *out_ep; > > + > > + pdata->node.mipi_dsi_host_node = of_graph_get_remote_node(np, 0, 0); > > + if (!pdata->node.mipi_dsi_host_node) { > > + DRM_DEV_ERROR(dev, "fail to get internal panel.\n"); > > + return -EPROBE_DEFER; > > + } > > + > > + of_node_put(pdata->node.mipi_dsi_host_node); > > + DRM_DEV_DEBUG_DRIVER(dev, "found dsi host node.\n"); > > + > > + pdata->node.panel_node = of_graph_get_port_by_id(np, 1); > > + if (!pdata->node.panel_node) { > > + DRM_DEV_ERROR(dev, "fail to get panel node.\n"); > > + return -EPROBE_DEFER; > > + } > > + > > + of_node_put(pdata->node.panel_node); > > + out_ep = of_get_child_by_name(pdata->node.panel_node, > > + "endpoint"); > > + if (!out_ep) { > > + DRM_DEV_DEBUG_DRIVER(dev, "cannot get endpoint.\n"); > > + return -EPROBE_DEFER; > > + } > > + > > + panel_node = of_graph_get_remote_port_parent(out_ep); > > + of_node_put(out_ep); > > + pdata->panel = of_drm_find_panel(panel_node); > > + DRM_DEV_DEBUG_DRIVER(dev, "get panel node.\n"); > > + > > + of_node_put(panel_node); > > + if (IS_ERR_OR_NULL(pdata->panel)) > > + return -EPROBE_DEFER; > > + > > + return 0; > > +} > > + > > +static inline struct anx7625_data *connector_to_anx7625(struct drm_connector *c) > > +{ > > + return container_of(c, struct anx7625_data, connector); > > +} > > + > > +static inline struct anx7625_data *bridge_to_anx7625(struct drm_bridge *bridge) > > +{ > > + return container_of(bridge, struct anx7625_data, bridge); > > +} > > + > > +static void anx7625_post_disable(struct drm_bridge *bridge) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "post disable\n"); > > + > > + if (!ctx->pdata.panel) > > + return; > > + > > + ret = drm_panel_unprepare(ctx->pdata.panel); > > + if (ret) > > + DRM_DEV_ERROR(dev, "fail to unprepare panel: %d\n", ret); > > + else > > + DRM_DEV_DEBUG_DRIVER(dev, "backlight unprepared.\n"); > > + > > + atomic_set(&ctx->panel_power, 0); > > +} > > + > > +static void anx7625_pre_enable(struct drm_bridge *bridge) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "pre enable\n"); > > + > > + if (!ctx->pdata.panel) > > + return; > > + > > + ret = drm_panel_prepare(ctx->pdata.panel); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "fail to prepare panel: %d\n", ret); > > + else > > + DRM_DEV_DEBUG_DRIVER(dev, "backlight prepared.\n"); > > + atomic_set(&ctx->panel_power, 1); > > +} > > + > > +static int anx7625_get_modes(struct drm_connector *connector) > > +{ > > + struct anx7625_data *ctx = connector_to_anx7625(connector); > > + int err, num_modes = 0; > > + int turn_off_flag = 0; > > + struct s_edid_data *p_edid = &ctx->slimport_edid_p; > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm get modes\n"); > > + > > + if (ctx->slimport_edid_p.edid_block_num > 0) > > + goto out; > > + > > + if (ctx->pdata.panel && atomic_read(&ctx->panel_power) == 0) { > > + turn_off_flag = 1; > > + anx7625_pre_enable(&ctx->bridge); > > + } > > + > > + anx7625_low_power_mode_check(ctx, 1); > > + > > + p_edid->edid_block_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data); > > + > > + err = -EIO; > > + if (p_edid->edid_block_num < 0) { > > + DRM_DEV_ERROR(dev, "Fail to read EDID.\n"); > > + goto fail; > > + } > > + > > + err = drm_connector_update_edid_property(connector, > > + (struct edid *) > > + &p_edid->edid_raw_data); > > + > > + if (err) > > + DRM_DEV_ERROR(dev, "Fail to update EDID property: %d\n", err); > > + > > +fail: > > + anx7625_low_power_mode_check(ctx, 0); > > + if (ctx->pdata.panel && turn_off_flag == 1) > > + anx7625_post_disable(&ctx->bridge); > > + > > + if (err) > > + return err; > > + > > +out: > > + num_modes = drm_add_edid_modes(connector, > > + (struct edid *)&p_edid->edid_raw_data); > > + DRM_DEV_DEBUG_DRIVER(dev, "num_modes(%d)\n", num_modes); > > + > > + return num_modes; > > +} > > + > > +static enum drm_mode_status > > +anx7625_connector_mode_valid(struct drm_connector *connector, > > + struct drm_display_mode *mode) > > +{ > > + struct anx7625_data *ctx = connector_to_anx7625(connector); > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm modes valid verify\n"); > > + > > + if (mode->clock > SUPPORT_PIXEL_CLOCK) > > + return MODE_CLOCK_HIGH; > > + > > + return MODE_OK; > > +} > > + > > +static struct drm_connector_helper_funcs anx7625_connector_helper_funcs = { > > + .get_modes = anx7625_get_modes, > > + .mode_valid = anx7625_connector_mode_valid, > > +}; > > + > > +static enum drm_connector_status anx7625_detect(struct drm_connector *connector, > > + bool force) > > +{ > > + struct anx7625_data *ctx = connector_to_anx7625(connector); > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm detect\n"); > > + > > + return connector_status_connected; > > +} > > + > > +static const struct drm_connector_funcs anx7625_connector_funcs = { > > + .fill_modes = drm_helper_probe_single_connector_modes, > > + .detect = anx7625_detect, > > + .destroy = drm_connector_cleanup, > > + .reset = drm_atomic_helper_connector_reset, > > + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, > > + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, > > +}; > > + > > +static int anx7625_attach_dsi(struct anx7625_data *ctx) > > +{ > > + struct mipi_dsi_host *host; > > + struct mipi_dsi_device *dsi; > > + struct device_node *mipi_host_node; > > + struct device *dev = &ctx->client->dev; > > + const struct mipi_dsi_device_info info = { > > + .type = "anx7625", > > + .channel = 0, > > + .node = NULL, > > + }; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "attach dsi\n"); > > + > > + mipi_host_node = ctx->pdata.node.mipi_dsi_host_node; > > + > > + if (!mipi_host_node) { > > + DRM_DEV_ERROR(dev, "dsi host is not configured.\n"); > > + return -EINVAL; > > + } > > + > > + host = of_find_mipi_dsi_host_by_node(mipi_host_node); > > + if (!host) { > > + DRM_DEV_ERROR(dev, "fail to find dsi host.\n"); > > + return -EINVAL; > > + } > > + > > + dsi = mipi_dsi_device_register_full(host, &info); > > + if (IS_ERR(dsi)) { > > + DRM_DEV_ERROR(dev, "fail to create dsi device.\n"); > > + return -EINVAL; > > + } > > + > > + dsi->lanes = 4; > > + dsi->format = MIPI_DSI_FMT_RGB888; > > + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | > > + MIPI_DSI_MODE_VIDEO_SYNC_PULSE | > > + MIPI_DSI_MODE_EOT_PACKET | > > + MIPI_DSI_MODE_VIDEO_HSE; > > + > > + if (mipi_dsi_attach(dsi) < 0) { > > + DRM_DEV_ERROR(dev, "fail to attach dsi to host.\n"); > > + mipi_dsi_device_unregister(dsi); > > + return -EINVAL; > > + } > > + > > + ctx->dsi = dsi; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "attach dsi succeeded.\n"); > > + > > + return 0; > > +} > > + > > +static void anx7625_bridge_detach(struct drm_bridge *bridge) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + > > + if (ctx->dsi) { > > + mipi_dsi_detach(ctx->dsi); > > + mipi_dsi_device_unregister(ctx->dsi); > > + } > > + > > + if (ctx->bridge_attached) > > + drm_connector_unregister(&ctx->connector); > > +} > > + > > +static int anx7625_bridge_attach(struct drm_bridge *bridge, > > + enum drm_bridge_attach_flags flags) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + int err; > > + struct device *dev = &ctx->client->dev; > > New bridge drivers need to make connector creation optional. When the > DRM_BRIDGE_ATTACH_NO_CONNECTOR flag is set in the flags argument, you > should skip creation of the connector. The driver also needs to > implement the drm_bridge_funcs .detect() and .get_edid() operations, as > well as HPD reporting. For an example of how a bridge driver can be > converted to this model, see https://lore.kernel.org/dri-devel/20200526011505.31884-23-laurent.pinchart+renesas@ideasonboard.com/ Hi Laurent Pinchart, thanks for your comments. OK, I'll add flag check and implement .detect() and .get_edid() function. Thanks, Xin > > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm attach\n"); > > + if (!bridge->encoder) { > > + DRM_DEV_ERROR(dev, "Parent encoder object not found"); > > + return -ENODEV; > > + } > > + > > + err = drm_connector_init(bridge->dev, &ctx->connector, > > + &anx7625_connector_funcs, > > + DRM_MODE_CONNECTOR_eDP); > > + if (err) { > > + DRM_DEV_ERROR(dev, "Fail to initialize connector: %d\n", err); > > + return err; > > + } > > + > > + drm_connector_helper_add(&ctx->connector, > > + &anx7625_connector_helper_funcs); > > + > > + err = drm_connector_register(&ctx->connector); > > + if (err) { > > + DRM_DEV_ERROR(dev, "Fail to register connector: %d\n", err); > > + return err; > > + } > > + > > + ctx->connector.polled = DRM_CONNECTOR_POLL_HPD; > > + > > + err = drm_connector_attach_encoder(&ctx->connector, bridge->encoder); > > + if (err) { > > + DRM_DEV_ERROR(dev, "Fail to attach encoder: %d\n", err); > > + drm_connector_unregister(&ctx->connector); > > + return err; > > + } > > + > > + err = anx7625_attach_dsi(ctx); > > + if (err) { > > + DRM_DEV_ERROR(dev, "Fail to attach to dsi : %d\n", err); > > + drm_connector_unregister(&ctx->connector); > > + return err; > > + } > > + > > + ctx->bridge_attached = 1; > > + > > + return 0; > > +} > > + > > +static enum drm_mode_status > > +anx7625_bridge_mode_valid(struct drm_bridge *bridge, > > + const struct drm_display_mode *mode) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm mode checking\n"); > > + > > + /* Max 1200p at 5.4 Ghz, one lane, pixel clock 300M */ > > + if (mode->clock > SUPPORT_PIXEL_CLOCK) { > > + DRM_DEV_DEBUG_DRIVER(dev, > > + "drm mode invalid, pixelclock too high.\n"); > > + return MODE_CLOCK_HIGH; > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm mode valid.\n"); > > + > > + return MODE_OK; > > +} > > + > > +static void anx7625_bridge_mode_set(struct drm_bridge *bridge, > > + const struct drm_display_mode *old_mode, > > + const struct drm_display_mode *mode) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm mode set\n"); > > + > > + ctx->dt.pixelclock.min = mode->clock; > > + ctx->dt.hactive.min = mode->hdisplay; > > + ctx->dt.hsync_len.min = mode->hsync_end - mode->hsync_start; > > + ctx->dt.hfront_porch.min = mode->hsync_start - mode->hdisplay; > > + ctx->dt.hback_porch.min = mode->htotal - mode->hsync_end; > > + ctx->dt.vactive.min = mode->vdisplay; > > + ctx->dt.vsync_len.min = mode->vsync_end - mode->vsync_start; > > + ctx->dt.vfront_porch.min = mode->vsync_start - mode->vdisplay; > > + ctx->dt.vback_porch.min = mode->vtotal - mode->vsync_end; > > + > > + ctx->display_timing_valid = 1; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "pixelclock(%d).\n", ctx->dt.pixelclock.min); > > + DRM_DEV_DEBUG_DRIVER(dev, "hactive(%d), hsync(%d), hfp(%d), hbp(%d)\n", > > + ctx->dt.hactive.min, > > + ctx->dt.hsync_len.min, > > + ctx->dt.hfront_porch.min, > > + ctx->dt.hback_porch.min); > > + DRM_DEV_DEBUG_DRIVER(dev, "vactive(%d), vsync(%d), vfp(%d), vbp(%d)\n", > > + ctx->dt.vactive.min, > > + ctx->dt.vsync_len.min, > > + ctx->dt.vfront_porch.min, > > + ctx->dt.vback_porch.min); > > + DRM_DEV_DEBUG_DRIVER(dev, "hdisplay(%d),hsync_start(%d).\n", > > + mode->hdisplay, > > + mode->hsync_start); > > + DRM_DEV_DEBUG_DRIVER(dev, "hsync_end(%d),htotal(%d).\n", > > + mode->hsync_end, > > + mode->htotal); > > + DRM_DEV_DEBUG_DRIVER(dev, "vdisplay(%d),vsync_start(%d).\n", > > + mode->vdisplay, > > + mode->vsync_start); > > + DRM_DEV_DEBUG_DRIVER(dev, "vsync_end(%d),vtotal(%d).\n", > > + mode->vsync_end, > > + mode->vtotal); > > +} > > + > > +static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge, > > + const struct drm_display_mode *mode, > > + struct drm_display_mode *adj) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + u32 hsync, hfp, hbp, hblanking; > > + u32 adj_hsync, adj_hfp, adj_hbp, adj_hblanking, delta_adj; > > + u32 vref, adj_clock; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm mode fixup set\n"); > > + > > + hsync = mode->hsync_end - mode->hsync_start; > > + hfp = mode->hsync_start - mode->hdisplay; > > + hbp = mode->htotal - mode->hsync_end; > > + hblanking = mode->htotal - mode->hdisplay; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "before mode fixup\n"); > > + DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", > > + hsync, hfp, hbp, adj->clock); > > + DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", > > + adj->hsync_start, adj->hsync_end, adj->htotal); > > + > > + adj_hfp = hfp; > > + adj_hsync = hsync; > > + adj_hbp = hbp; > > + adj_hblanking = hblanking; > > + > > + /* HFP needs to be even */ > > + if (hfp & 0x1) { > > + adj_hfp += 1; > > + adj_hblanking += 1; > > + } > > + > > + /* HBP needs to be even */ > > + if (hbp & 0x1) { > > + adj_hbp -= 1; > > + adj_hblanking -= 1; > > + } > > + > > + /* HSYNC needs to be even */ > > + if (hsync & 0x1) { > > + if (adj_hblanking < hblanking) > > + adj_hsync += 1; > > + else > > + adj_hsync -= 1; > > + } > > + > > + /* > > + * Once illegal timing detected, use default HFP, HSYNC, HBP > > + * This adjusting made for built-in eDP panel, for the externel > > + * DP monitor, may need return false. > > + */ > > + if (hblanking < HBLANKING_MIN || (hfp < HP_MIN && hbp < HP_MIN)) { > > + adj_hsync = SYNC_LEN_DEF; > > + adj_hfp = HFP_HBP_DEF; > > + adj_hbp = HFP_HBP_DEF; > > + vref = adj->clock * 1000 / (adj->htotal * adj->vtotal); > > + if (hblanking < HBLANKING_MIN) { > > + delta_adj = HBLANKING_MIN - hblanking; > > + adj_clock = vref * delta_adj * adj->vtotal; > > + adj->clock += DIV_ROUND_UP(adj_clock, 1000); > > + } else { > > + delta_adj = hblanking - HBLANKING_MIN; > > + adj_clock = vref * delta_adj * adj->vtotal; > > + adj->clock -= DIV_ROUND_UP(adj_clock, 1000); > > + } > > + > > + DRM_WARN("illegal hblanking timing, use default.\n"); > > + DRM_WARN("hfp(%d), hbp(%d), hsync(%d).\n", hfp, hbp, hsync); > > + } else if (adj_hfp < HP_MIN) { > > + /* Adjust hfp if hfp less than HP_MIN */ > > + delta_adj = HP_MIN - adj_hfp; > > + adj_hfp = HP_MIN; > > + > > + /* > > + * Balance total HBlanking pixel, if HBP does not have enough > > + * space, adjust HSYNC length, otherwise adjust HBP > > + */ > > + if ((adj_hbp - delta_adj) < HP_MIN) > > + /* HBP not enough space */ > > + adj_hsync -= delta_adj; > > + else > > + adj_hbp -= delta_adj; > > + } else if (adj_hbp < HP_MIN) { > > + delta_adj = HP_MIN - adj_hbp; > > + adj_hbp = HP_MIN; > > + > > + /* > > + * Balance total HBlanking pixel, if HBP hasn't enough space, > > + * adjust HSYNC length, otherwize adjust HBP > > + */ > > + if ((adj_hfp - delta_adj) < HP_MIN) > > + /* HFP not enough space */ > > + adj_hsync -= delta_adj; > > + else > > + adj_hfp -= delta_adj; > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "after mode fixup\n"); > > + DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", > > + adj_hsync, adj_hfp, adj_hbp, adj->clock); > > + > > + /* Reconstruct timing */ > > + adj->hsync_start = adj->hdisplay + adj_hfp; > > + adj->hsync_end = adj->hsync_start + adj_hsync; > > + adj->htotal = adj->hsync_end + adj_hbp; > > + DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", > > + adj->hsync_start, adj->hsync_end, adj->htotal); > > + > > + return true; > > +} > > + > > +static void anx7625_bridge_enable(struct drm_bridge *bridge) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm enable\n"); > > + > > + anx7625_low_power_mode_check(ctx, 1); > > + > > + if (WARN_ON(!atomic_read(&ctx->power_status))) > > + return; > > + > > + if (ctx->pdata.panel) { > > + ret = drm_panel_enable(ctx->pdata.panel); > > + if (ret < 0) { > > + DRM_DEV_ERROR(dev, "fail to enable panel: %d.\n", ret); > > + return; > > + } > > + } > > + > > + anx7625_dp_start(ctx); > > +} > > + > > +static void anx7625_bridge_disable(struct drm_bridge *bridge) > > +{ > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge); > > + struct device *dev = &ctx->client->dev; > > + int ret; > > + > > + if (WARN_ON(!atomic_read(&ctx->power_status))) > > + return; > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n"); > > + > > + if (ctx->pdata.panel) { > > + ret = drm_panel_disable(ctx->pdata.panel); > > + if (ret < 0) > > + DRM_DEV_ERROR(dev, "fail to disable panel: %d.\n", ret); > > + } > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n"); > > + > > + anx7625_dp_stop(ctx); > > + > > + anx7625_low_power_mode_check(ctx, 0); > > +} > > + > > +static const struct drm_bridge_funcs anx7625_bridge_funcs = { > > + .attach = anx7625_bridge_attach, > > + .detach = anx7625_bridge_detach, > > + .disable = anx7625_bridge_disable, > > + .post_disable = anx7625_post_disable, > > + .pre_enable = anx7625_pre_enable, > > + .mode_valid = anx7625_bridge_mode_valid, > > + .mode_set = anx7625_bridge_mode_set, > > + .mode_fixup = anx7625_bridge_mode_fixup, > > + .enable = anx7625_bridge_enable, > > +}; > > + > > +static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx, > > + struct i2c_client *client) > > +{ > > + ctx->i2c.tx_p0_client = i2c_new_dummy_device(client->adapter, > > + TX_P0_ADDR >> 1); > > + if (!ctx->i2c.tx_p0_client) > > + return -ENOMEM; > > + > > + ctx->i2c.tx_p1_client = i2c_new_dummy_device(client->adapter, > > + TX_P1_ADDR >> 1); > > + if (!ctx->i2c.tx_p1_client) > > + goto free_tx_p0; > > + > > + ctx->i2c.tx_p2_client = i2c_new_dummy_device(client->adapter, > > + TX_P2_ADDR >> 1); > > + if (!ctx->i2c.tx_p2_client) > > + goto free_tx_p1; > > + > > + ctx->i2c.rx_p0_client = i2c_new_dummy_device(client->adapter, > > + RX_P0_ADDR >> 1); > > + if (!ctx->i2c.rx_p0_client) > > + goto free_tx_p2; > > + > > + ctx->i2c.rx_p1_client = i2c_new_dummy_device(client->adapter, > > + RX_P1_ADDR >> 1); > > + if (!ctx->i2c.rx_p1_client) > > + goto free_rx_p0; > > + > > + ctx->i2c.rx_p2_client = i2c_new_dummy_device(client->adapter, > > + RX_P2_ADDR >> 1); > > + if (!ctx->i2c.rx_p2_client) > > + goto free_rx_p1; > > + > > + ctx->i2c.tcpc_client = i2c_new_dummy_device(client->adapter, > > + TCPC_INTERFACE_ADDR >> 1); > > + if (!ctx->i2c.tcpc_client) > > + goto free_rx_p2; > > + > > + return 0; > > + > > +free_rx_p2: > > + i2c_unregister_device(ctx->i2c.rx_p2_client); > > +free_rx_p1: > > + i2c_unregister_device(ctx->i2c.rx_p1_client); > > +free_rx_p0: > > + i2c_unregister_device(ctx->i2c.rx_p0_client); > > +free_tx_p2: > > + i2c_unregister_device(ctx->i2c.tx_p2_client); > > +free_tx_p1: > > + i2c_unregister_device(ctx->i2c.tx_p1_client); > > +free_tx_p0: > > + i2c_unregister_device(ctx->i2c.tx_p0_client); > > + > > + return -ENOMEM; > > +} > > + > > +static void anx7625_unregister_i2c_dummy_clients(struct anx7625_data *ctx) > > +{ > > + i2c_unregister_device(ctx->i2c.tx_p0_client); > > + i2c_unregister_device(ctx->i2c.tx_p1_client); > > + i2c_unregister_device(ctx->i2c.tx_p2_client); > > + i2c_unregister_device(ctx->i2c.rx_p0_client); > > + i2c_unregister_device(ctx->i2c.rx_p1_client); > > + i2c_unregister_device(ctx->i2c.rx_p2_client); > > + i2c_unregister_device(ctx->i2c.tcpc_client); > > +} > > + > > +static int anx7625_i2c_probe(struct i2c_client *client, > > + const struct i2c_device_id *id) > > +{ > > + struct anx7625_data *platform; > > + struct anx7625_platform_data *pdata; > > + int ret = 0; > > + struct device *dev = &client->dev; > > + > > + if (!i2c_check_functionality(client->adapter, > > + I2C_FUNC_SMBUS_I2C_BLOCK)) { > > + DRM_DEV_ERROR(dev, "anx7625's i2c bus doesn't support\n"); > > + return -ENODEV; > > + } > > + > > + platform = kzalloc(sizeof(*platform), GFP_KERNEL); > > + if (!platform) { > > + DRM_DEV_ERROR(dev, "fail to allocate driver data\n"); > > + return -ENOMEM; > > + } > > + > > + pdata = &platform->pdata; > > + > > + ret = anx7625_parse_dt(dev, pdata); > > + if (ret) { > > + DRM_DEV_ERROR(dev, "fail to parse devicetree.\n"); > > + goto free_platform; > > + } > > + > > + platform->client = client; > > + i2c_set_clientdata(client, platform); > > + > > + anx7625_init_gpio(platform); > > + > > + atomic_set(&platform->power_status, 0); > > + > > + mutex_init(&platform->lock); > > + > > + platform->pdata.intp_irq = client->irq; > > + if (platform->pdata.intp_irq) { > > + INIT_WORK(&platform->work, anx7625_work_func); > > + platform->workqueue = create_workqueue("anx7625_work"); > > + if (!platform->workqueue) { > > + DRM_DEV_ERROR(dev, "fail to create work queue\n"); > > + ret = -ENOMEM; > > + goto free_platform; > > + } > > + > > + ret = devm_request_threaded_irq(dev, platform->pdata.intp_irq, > > + NULL, anx7625_intr_hpd_isr, > > + IRQF_TRIGGER_FALLING | > > + IRQF_ONESHOT, > > + "anx7625-intp", platform); > > + if (ret) { > > + DRM_DEV_ERROR(dev, "fail to request irq\n"); > > + goto free_wq; > > + } > > + } > > + > > + if (anx7625_register_i2c_dummy_clients(platform, client) != 0) { > > + ret = -ENOMEM; > > + DRM_DEV_ERROR(dev, "fail to reserve I2C bus.\n"); > > + goto free_wq; > > + } > > + > > + if (platform->pdata.low_power_mode == 0) { > > + anx7625_disable_pd_protocol(platform); > > + atomic_set(&platform->power_status, 1); > > + } > > + > > + /* Add work function */ > > + if (platform->pdata.intp_irq) > > + queue_work(platform->workqueue, &platform->work); > > + > > + platform->bridge.funcs = &anx7625_bridge_funcs; > > + platform->bridge.of_node = client->dev.of_node; > > + drm_bridge_add(&platform->bridge); > > + > > + DRM_DEV_DEBUG_DRIVER(dev, "probe done\n"); > > + > > + return 0; > > + > > +free_wq: > > + if (platform->workqueue) > > + destroy_workqueue(platform->workqueue); > > + > > +free_platform: > > + kfree(platform); > > + > > + return ret; > > +} > > + > > +static int anx7625_i2c_remove(struct i2c_client *client) > > +{ > > + struct anx7625_data *platform = i2c_get_clientdata(client); > > + > > + drm_bridge_remove(&platform->bridge); > > + > > + if (platform->pdata.intp_irq) > > + destroy_workqueue(platform->workqueue); > > + > > + anx7625_unregister_i2c_dummy_clients(platform); > > + > > + kfree(platform); > > + return 0; > > +} > > + > > +static const struct i2c_device_id anx7625_id[] = { > > + {"anx7625", 0}, > > + {} > > +}; > > + > > +MODULE_DEVICE_TABLE(i2c, anx7625_id); > > + > > +static const struct of_device_id anx_match_table[] = { > > + {.compatible = "analogix,anx7625",}, > > + {}, > > +}; > > + > > +static struct i2c_driver anx7625_driver = { > > + .driver = { > > + .name = "anx7625", > > + .of_match_table = anx_match_table, > > + }, > > + .probe = anx7625_i2c_probe, > > + .remove = anx7625_i2c_remove, > > + > > + .id_table = anx7625_id, > > +}; > > + > > +module_i2c_driver(anx7625_driver); > > + > > +MODULE_DESCRIPTION("MIPI2DP anx7625 driver"); > > +MODULE_AUTHOR("Xin Ji <xji@analogixsemi.com>"); > > +MODULE_LICENSE("GPL v2"); > > +MODULE_VERSION(ANX7625_DRV_VERSION); > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h > > new file mode 100644 > > index 0000000..79e6534 > > --- /dev/null > > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.h > > @@ -0,0 +1,397 @@ > > +/* SPDX-License-Identifier: GPL-2.0-only */ > > +/* > > + * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. > > + * > > + */ > > + > > +#ifndef __ANX7625_H__ > > +#define __ANX7625_H__ > > + > > +#define ANX7625_DRV_VERSION "0.1.04" > > + > > +/* Loading OCM re-trying times */ > > +#define OCM_LOADING_TIME 10 > > + > > +/********* ANX7625 Register **********/ > > +#define TX_P0_ADDR 0x70 > > +#define TX_P1_ADDR 0x7A > > +#define TX_P2_ADDR 0x72 > > + > > +#define RX_P0_ADDR 0x7e > > +#define RX_P1_ADDR 0x84 > > +#define RX_P2_ADDR 0x54 > > + > > +#define RSVD_00_ADDR 0x00 > > +#define RSVD_D1_ADDR 0xD1 > > +#define RSVD_60_ADDR 0x60 > > +#define RSVD_39_ADDR 0x39 > > +#define RSVD_7F_ADDR 0x7F > > + > > +#define TCPC_INTERFACE_ADDR 0x58 > > + > > +/* Clock frequency in Hz */ > > +#define XTAL_FRQ (27 * 1000000) > > + > > +#define POST_DIVIDER_MIN 1 > > +#define POST_DIVIDER_MAX 16 > > +#define PLL_OUT_FREQ_MIN 520000000UL > > +#define PLL_OUT_FREQ_MAX 730000000UL > > +#define PLL_OUT_FREQ_ABS_MIN 300000000UL > > +#define PLL_OUT_FREQ_ABS_MAX 800000000UL > > +#define MAX_UNSIGNED_24BIT 16777215UL > > + > > +/***************************************************************/ > > +/* Register definition of device address 0x58 */ > > + > > +#define PRODUCT_ID_L 0x02 > > +#define PRODUCT_ID_H 0x03 > > + > > +#define INTR_ALERT_1 0xCC > > +#define INTR_SOFTWARE_INT BIT(3) > > +#define INTR_RECEIVED_MSG BIT(5) > > + > > +#define SYSTEM_STSTUS 0x45 > > +#define INTERFACE_CHANGE_INT 0x44 > > +#define HPD_STATUS_CHANGE 0x80 > > +#define HPD_STATUS 0x80 > > + > > +/******** END of I2C Address 0x58 ********/ > > + > > +/***************************************************************/ > > +/* Register definition of device address 0x70 */ > > +#define I2C_ADDR_70_DPTX 0x70 > > + > > +#define SP_TX_LINK_BW_SET_REG 0xA0 > > +#define SP_TX_LANE_COUNT_SET_REG 0xA1 > > + > > +#define M_VID_0 0xC0 > > +#define M_VID_1 0xC1 > > +#define M_VID_2 0xC2 > > +#define N_VID_0 0xC3 > > +#define N_VID_1 0xC4 > > +#define N_VID_2 0xC5 > > + > > +/***************************************************************/ > > +/* Register definition of device address 0x72 */ > > +#define AUX_RST 0x04 > > +#define RST_CTRL2 0x07 > > + > > +#define SP_TX_TOTAL_LINE_STA_L 0x24 > > +#define SP_TX_TOTAL_LINE_STA_H 0x25 > > +#define SP_TX_ACT_LINE_STA_L 0x26 > > +#define SP_TX_ACT_LINE_STA_H 0x27 > > +#define SP_TX_V_F_PORCH_STA 0x28 > > +#define SP_TX_V_SYNC_STA 0x29 > > +#define SP_TX_V_B_PORCH_STA 0x2A > > +#define SP_TX_TOTAL_PIXEL_STA_L 0x2B > > +#define SP_TX_TOTAL_PIXEL_STA_H 0x2C > > +#define SP_TX_ACT_PIXEL_STA_L 0x2D > > +#define SP_TX_ACT_PIXEL_STA_H 0x2E > > +#define SP_TX_H_F_PORCH_STA_L 0x2F > > +#define SP_TX_H_F_PORCH_STA_H 0x30 > > +#define SP_TX_H_SYNC_STA_L 0x31 > > +#define SP_TX_H_SYNC_STA_H 0x32 > > +#define SP_TX_H_B_PORCH_STA_L 0x33 > > +#define SP_TX_H_B_PORCH_STA_H 0x34 > > + > > +#define SP_TX_VID_CTRL 0x84 > > +#define SP_TX_BPC_MASK 0xE0 > > +#define SP_TX_BPC_6 0x00 > > +#define SP_TX_BPC_8 0x20 > > +#define SP_TX_BPC_10 0x40 > > +#define SP_TX_BPC_12 0x60 > > + > > +#define VIDEO_BIT_MATRIX_12 0x4c > > + > > +#define AUDIO_CHANNEL_STATUS_1 0xd0 > > +#define AUDIO_CHANNEL_STATUS_2 0xd1 > > +#define AUDIO_CHANNEL_STATUS_3 0xd2 > > +#define AUDIO_CHANNEL_STATUS_4 0xd3 > > +#define AUDIO_CHANNEL_STATUS_5 0xd4 > > +#define AUDIO_CHANNEL_STATUS_6 0xd5 > > +#define TDM_SLAVE_MODE 0x10 > > +#define I2S_SLAVE_MODE 0x08 > > + > > +#define AUDIO_CONTROL_REGISTER 0xe6 > > +#define TDM_TIMING_MODE 0x08 > > + > > +#define I2C_ADDR_72_DPTX 0x72 > > + > > +#define HP_MIN 8 > > +#define HBLANKING_MIN 80 > > +#define SYNC_LEN_DEF 32 > > +#define HFP_HBP_DEF ((HBLANKING_MIN - SYNC_LEN_DEF) / 2) > > +#define VIDEO_CONTROL_0 0x08 > > + > > +#define ACTIVE_LINES_L 0x14 > > +#define ACTIVE_LINES_H 0x15 /* Bit[7:6] are reserved */ > > +#define VERTICAL_FRONT_PORCH 0x16 > > +#define VERTICAL_SYNC_WIDTH 0x17 > > +#define VERTICAL_BACK_PORCH 0x18 > > + > > +#define HORIZONTAL_TOTAL_PIXELS_L 0x19 > > +#define HORIZONTAL_TOTAL_PIXELS_H 0x1A /* Bit[7:6] are reserved */ > > +#define HORIZONTAL_ACTIVE_PIXELS_L 0x1B > > +#define HORIZONTAL_ACTIVE_PIXELS_H 0x1C /* Bit[7:6] are reserved */ > > +#define HORIZONTAL_FRONT_PORCH_L 0x1D > > +#define HORIZONTAL_FRONT_PORCH_H 0x1E /* Bit[7:4] are reserved */ > > +#define HORIZONTAL_SYNC_WIDTH_L 0x1F > > +#define HORIZONTAL_SYNC_WIDTH_H 0x20 /* Bit[7:4] are reserved */ > > +#define HORIZONTAL_BACK_PORCH_L 0x21 > > +#define HORIZONTAL_BACK_PORCH_H 0x22 /* Bit[7:4] are reserved */ > > + > > +/******** END of I2C Address 0x72 *********/ > > +/***************************************************************/ > > +/* Register definition of device address 0x7e */ > > + > > +#define I2C_ADDR_7E_FLASH_CONTROLLER 0x7E > > + > > +#define FLASH_LOAD_STA 0x05 > > +#define FLASH_LOAD_STA_CHK BIT(7) > > + > > +#define XTAL_FRQ_SEL 0x3F > > +/* bit field positions */ > > +#define XTAL_FRQ_SEL_POS 5 > > +/* bit field values */ > > +#define XTAL_FRQ_19M2 (0 << XTAL_FRQ_SEL_POS) > > +#define XTAL_FRQ_27M (4 << XTAL_FRQ_SEL_POS) > > + > > +#define R_DSC_CTRL_0 0x40 > > +#define READ_STATUS_EN 7 > > +#define CLK_1MEG_RB 6 /* 1MHz clock reset; 0=reset, 0=reset release */ > > +#define DSC_BIST_DONE 1 /* Bit[5:1]: 1=DSC MBIST pass */ > > +#define DSC_EN 0x01 /* 1=DSC enabled, 0=DSC disabled */ > > + > > +#define OCM_FW_VERSION 0x31 > > +#define OCM_FW_REVERSION 0x32 > > + > > +#define AP_AUX_ADDR_7_0 0x11 > > +#define AP_AUX_ADDR_15_8 0x12 > > +#define AP_AUX_ADDR_19_16 0x13 > > + > > +/* Bit[0:3] AUX status, bit 4 op_en, bit 5 address only */ > > +#define AP_AUX_CTRL_STATUS 0x14 > > +#define AP_AUX_CTRL_OP_EN 0x10 > > +#define AP_AUX_CTRL_ADDRONLY 0x20 > > + > > +#define AP_AUX_BUFF_START 0x15 > > +#define PIXEL_CLOCK_L 0x25 > > +#define PIXEL_CLOCK_H 0x26 > > + > > +#define AP_AUX_COMMAND 0x27 /* com+len */ > > +/* Bit 0&1: 3D video structure */ > > +/* 0x01: frame packing, 0x02:Line alternative, 0x03:Side-by-side(full) */ > > +#define AP_AV_STATUS 0x28 > > +#define AP_VIDEO_CHG BIT(2) > > +#define AP_AUDIO_CHG BIT(3) > > +#define AP_MIPI_MUTE BIT(4) /* 1:MIPI input mute, 0: ummute */ > > +#define AP_MIPI_RX_EN BIT(5) /* 1: MIPI RX input in 0: no RX in */ > > +#define AP_DISABLE_PD BIT(6) > > +#define AP_DISABLE_DISPLAY BIT(7) > > +/***************************************************************/ > > +/* Register definition of device address 0x84 */ > > +#define MIPI_PHY_CONTROL_3 0x03 > > +#define MIPI_HS_PWD_CLK 7 > > +#define MIPI_HS_RT_CLK 6 > > +#define MIPI_PD_CLK 5 > > +#define MIPI_CLK_RT_MANUAL_PD_EN 4 > > +#define MIPI_CLK_HS_MANUAL_PD_EN 3 > > +#define MIPI_CLK_DET_DET_BYPASS 2 > > +#define MIPI_CLK_MISS_CTRL 1 > > +#define MIPI_PD_LPTX_CH_MANUAL_PD_EN 0 > > + > > +#define MIPI_LANE_CTRL_0 0x05 > > +#define MIPI_TIME_HS_PRPR 0x08 > > + > > +/* > > + * After MIPI RX protocol layer received video frames, > > + * Protocol layer starts to reconstruct video stream from PHY > > + */ > > +#define MIPI_VIDEO_STABLE_CNT 0x0A > > + > > +#define MIPI_LANE_CTRL_10 0x0F > > +#define MIPI_DIGITAL_ADJ_1 0x1B > > + > > +#define MIPI_PLL_M_NUM_23_16 0x1E > > +#define MIPI_PLL_M_NUM_15_8 0x1F > > +#define MIPI_PLL_M_NUM_7_0 0x20 > > +#define MIPI_PLL_N_NUM_23_16 0x21 > > +#define MIPI_PLL_N_NUM_15_8 0x22 > > +#define MIPI_PLL_N_NUM_7_0 0x23 > > + > > +#define MIPI_DIGITAL_PLL_6 0x2A > > +/* Bit[7:6]: VCO band control, only effective */ > > +#define MIPI_M_NUM_READY 0x10 > > +#define MIPI_N_NUM_READY 0x08 > > +#define STABLE_INTEGER_CNT_EN 0x04 > > +#define MIPI_PLL_TEST_BIT 0 > > +/* Bit[1:0]: test point output select - */ > > +/* 00: VCO power, 01: dvdd_pdt, 10: dvdd, 11: vcox */ > > + > > +#define MIPI_DIGITAL_PLL_7 0x2B > > +#define MIPI_PLL_FORCE_N_EN 7 > > +#define MIPI_PLL_FORCE_BAND_EN 6 > > + > > +#define MIPI_PLL_VCO_TUNE_REG 4 > > +/* Bit[5:4]: VCO metal capacitance - */ > > +/* 00: +20% fast, 01: +10% fast (default), 10: typical, 11: -10% slow */ > > +#define MIPI_PLL_VCO_TUNE_REG_VAL 0x30 > > + > > +#define MIPI_PLL_PLL_LDO_BIT 2 > > +/* Bit[3:2]: vco_v2i power - */ > > +/* 00: 1.40V, 01: 1.45V (default), 10: 1.50V, 11: 1.55V */ > > +#define MIPI_PLL_RESET_N 0x02 > > +#define MIPI_FRQ_FORCE_NDET 0 > > + > > +#define MIPI_ALERT_CLR_0 0x2D > > +#define HS_link_error_clear 7 > > +/* This bit itself is S/C, and it clears 0x84:0x31[7] */ > > + > > +#define MIPI_ALERT_OUT_0 0x31 > > +#define check_sum_err_hs_sync 7 > > +/* This bit is cleared by 0x84:0x2D[7] */ > > + > > +#define MIPI_DIGITAL_PLL_8 0x33 > > +#define MIPI_POST_DIV_VAL 4 > > +/* N means divided by (n+1), n = 0~15 */ > > +#define MIPI_EN_LOCK_FRZ 3 > > +#define MIPI_FRQ_COUNTER_RST 2 > > +#define MIPI_FRQ_SET_REG_8 1 > > +/* Bit 0 is reserved */ > > + > > +#define MIPI_DIGITAL_PLL_9 0x34 > > + > > +#define MIPI_DIGITAL_PLL_16 0x3B > > +#define MIPI_FRQ_FREEZE_NDET 7 > > +#define MIPI_FRQ_REG_SET_ENABLE 6 > > +#define MIPI_REG_FORCE_SEL_EN 5 > > +#define MIPI_REG_SEL_DIV_REG 4 > > +#define MIPI_REG_FORCE_PRE_DIV_EN 3 > > +/* Bit 2 is reserved */ > > +#define MIPI_FREF_D_IND 1 > > +#define REF_CLK_27000KHZ 1 > > +#define REF_CLK_19200KHZ 0 > > +#define MIPI_REG_PLL_PLL_TEST_ENABLE 0 > > + > > +#define MIPI_DIGITAL_PLL_18 0x3D > > +#define FRQ_COUNT_RB_SEL 7 > > +#define REG_FORCE_POST_DIV_EN 6 > > +#define MIPI_DPI_SELECT 5 > > +#define SELECT_DSI 1 > > +#define SELECT_DPI 0 > > +#define REG_BAUD_DIV_RATIO 0 > > + > > +#define H_BLANK_L 0x3E > > +/* For DSC only */ > > +#define H_BLANK_H 0x3F > > +/* For DSC only; note: bit[7:6] are reserved */ > > +#define MIPI_SWAP 0x4A > > +#define MIPI_SWAP_CH0 7 > > +#define MIPI_SWAP_CH1 6 > > +#define MIPI_SWAP_CH2 5 > > +#define MIPI_SWAP_CH3 4 > > +#define MIPI_SWAP_CLK 3 > > +/* Bit[2:0] are reserved */ > > + > > +/******** END of I2C Address 0x84 *********/ > > + > > +/* DPCD regs */ > > +#define DPCD_DPCD_REV 0x00 > > +#define DPCD_MAX_LINK_RATE 0x01 > > +#define DPCD_MAX_LANE_COUNT 0x02 > > + > > +/********* ANX7625 Register End **********/ > > + > > +/***************** Display *****************/ > > +enum audio_fs { > > + AUDIO_FS_441K = 0x00, > > + AUDIO_FS_48K = 0x02, > > + AUDIO_FS_32K = 0x03, > > + AUDIO_FS_882K = 0x08, > > + AUDIO_FS_96K = 0x0a, > > + AUDIO_FS_1764K = 0x0c, > > + AUDIO_FS_192K = 0x0e > > +}; > > + > > +enum audio_wd_len { > > + AUDIO_W_LEN_16_20MAX = 0x02, > > + AUDIO_W_LEN_18_20MAX = 0x04, > > + AUDIO_W_LEN_17_20MAX = 0x0c, > > + AUDIO_W_LEN_19_20MAX = 0x08, > > + AUDIO_W_LEN_20_20MAX = 0x0a, > > + AUDIO_W_LEN_20_24MAX = 0x03, > > + AUDIO_W_LEN_22_24MAX = 0x05, > > + AUDIO_W_LEN_21_24MAX = 0x0d, > > + AUDIO_W_LEN_23_24MAX = 0x09, > > + AUDIO_W_LEN_24_24MAX = 0x0b > > +}; > > + > > +#define I2S_CH_2 0x01 > > +#define TDM_CH_4 0x03 > > +#define TDM_CH_6 0x05 > > +#define TDM_CH_8 0x07 > > + > > +#define MAX_DPCD_BUFFER_SIZE 16 > > + > > +#define ONE_BLOCK_SIZE 128 > > +#define FOUR_BLOCK_SIZE (128 * 4) > > + > > +#define MAX_EDID_BLOCK 3 > > +#define EDID_TRY_CNT 3 > > +#define SUPPORT_PIXEL_CLOCK 300000 > > + > > +struct s_edid_data { > > + int edid_block_num; > > + u8 edid_raw_data[FOUR_BLOCK_SIZE]; > > +}; > > + > > +/***************** Display End *****************/ > > + > > +struct anx7625_device_node { > > + struct device_node *mipi_dsi_host_node; > > + struct device_node *panel_node; > > +}; > > + > > +struct anx7625_platform_data { > > + struct gpio_desc *gpio_p_on; > > + struct gpio_desc *gpio_reset; > > + struct drm_panel *panel; > > + int intp_irq; > > + u32 low_power_mode; > > + struct anx7625_device_node node; > > +}; > > + > > +struct anx7625_i2c_client { > > + struct i2c_client *tx_p0_client; > > + struct i2c_client *tx_p1_client; > > + struct i2c_client *tx_p2_client; > > + struct i2c_client *rx_p0_client; > > + struct i2c_client *rx_p1_client; > > + struct i2c_client *rx_p2_client; > > + struct i2c_client *tcpc_client; > > +}; > > + > > +struct anx7625_data { > > + struct anx7625_platform_data pdata; > > + atomic_t power_status; > > + atomic_t panel_power; > > + int hpd_status; > > + int hpd_high_cnt; > > + /* Lock for work queue */ > > + struct mutex lock; > > + struct i2c_client *client; > > + struct anx7625_i2c_client i2c; > > + struct i2c_client *last_client; > > + struct s_edid_data slimport_edid_p; > > + struct work_struct work; > > + struct workqueue_struct *workqueue; > > + char edid_block; > > + struct display_timing dt; > > + u8 display_timing_valid; > > + struct drm_bridge bridge; > > + u8 bridge_attached; > > + struct drm_connector connector; > > + struct mipi_dsi_device *dsi; > > +}; > > + > > +#endif /* __ANX7625_H__ */ > > -- > Regards, > > Laurent Pinchart
diff --git a/drivers/gpu/drm/bridge/analogix/Kconfig b/drivers/gpu/drm/bridge/analogix/Kconfig index e1fa7d8..024ea2a 100644 --- a/drivers/gpu/drm/bridge/analogix/Kconfig +++ b/drivers/gpu/drm/bridge/analogix/Kconfig @@ -25,3 +25,12 @@ config DRM_ANALOGIX_ANX78XX config DRM_ANALOGIX_DP tristate depends on DRM + +config DRM_ANALOGIX_ANX7625 + tristate "Analogix Anx7625 MIPI to DP interface support" + depends on DRM + depends on OF + help + ANX7625 is an ultra-low power 4K mobile HD transmitter + designed for portable devices. It converts MIPI/DPI to + DisplayPort1.3 4K. diff --git a/drivers/gpu/drm/bridge/analogix/Makefile b/drivers/gpu/drm/bridge/analogix/Makefile index 97669b3..44da392 100644 --- a/drivers/gpu/drm/bridge/analogix/Makefile +++ b/drivers/gpu/drm/bridge/analogix/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0-only analogix_dp-objs := analogix_dp_core.o analogix_dp_reg.o analogix-i2c-dptx.o obj-$(CONFIG_DRM_ANALOGIX_ANX6345) += analogix-anx6345.o +obj-$(CONFIG_DRM_ANALOGIX_ANX7625) += anx7625.o obj-$(CONFIG_DRM_ANALOGIX_ANX78XX) += analogix-anx78xx.o obj-$(CONFIG_DRM_ANALOGIX_DP) += analogix_dp.o diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c new file mode 100644 index 0000000..f1cc6bb --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -0,0 +1,1961 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. + * + */ +#include <linux/gcd.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/iopoll.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <linux/workqueue.h> + +#include <linux/of_gpio.h> +#include <linux/of_graph.h> +#include <linux/of_platform.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_dp_helper.h> +#include <drm/drm_edid.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> +#include <drm/drm_probe_helper.h> + +#include <video/display_timing.h> + +#include "anx7625.h" + +/* + * There is a sync issue while access I2C register between AP(CPU) and + * internal firmware(OCM), to avoid the race condition, AP should access + * the reserved slave address before slave address occurs changes. + */ +static int i2c_access_workaround(struct anx7625_data *ctx, + struct i2c_client *client) +{ + u8 offset; + struct device *dev = &client->dev; + int ret; + + if (client == ctx->last_client) + return 0; + + ctx->last_client = client; + + if (client == ctx->i2c.tcpc_client) + offset = RSVD_00_ADDR; + else if (client == ctx->i2c.tx_p0_client) + offset = RSVD_D1_ADDR; + else if (client == ctx->i2c.tx_p1_client) + offset = RSVD_60_ADDR; + else if (client == ctx->i2c.rx_p0_client) + offset = RSVD_39_ADDR; + else if (client == ctx->i2c.rx_p1_client) + offset = RSVD_7F_ADDR; + else + offset = RSVD_00_ADDR; + + ret = i2c_smbus_write_byte_data(client, offset, 0x00); + if (ret < 0) + DRM_DEV_ERROR(dev, + "fail to access i2c id=%x\n:%x", + client->addr, offset); + + return ret; +} + +static int anx7625_reg_read(struct anx7625_data *ctx, + struct i2c_client *client, u8 reg_addr) +{ + int ret; + struct device *dev = &client->dev; + + i2c_access_workaround(ctx, client); + + ret = i2c_smbus_read_byte_data(client, reg_addr); + if (ret < 0) + DRM_DEV_ERROR(dev, "read i2c fail id=%x:%x\n", + client->addr, reg_addr); + + return ret; +} + +static int anx7625_reg_block_read(struct anx7625_data *ctx, + struct i2c_client *client, + u8 reg_addr, u8 len, u8 *buf) +{ + int ret; + struct device *dev = &client->dev; + + i2c_access_workaround(ctx, client); + + ret = i2c_smbus_read_i2c_block_data(client, reg_addr, len, buf); + if (ret < 0) + DRM_DEV_ERROR(dev, "read i2c block fail id=%x:%x\n", + client->addr, reg_addr); + + return ret; +} + +static int anx7625_reg_write(struct anx7625_data *ctx, + struct i2c_client *client, + u8 reg_addr, u8 reg_val) +{ + int ret; + struct device *dev = &client->dev; + + i2c_access_workaround(ctx, client); + + ret = i2c_smbus_write_byte_data(client, reg_addr, reg_val); + + if (ret < 0) + DRM_DEV_ERROR(dev, "fail to write i2c id=%x\n:%x", + client->addr, reg_addr); + + return ret; +} + +static int anx7625_write_or(struct anx7625_data *ctx, + struct i2c_client *client, + u8 offset, u8 mask) +{ + int val; + + val = anx7625_reg_read(ctx, client, offset); + if (val < 0) + return val; + + return anx7625_reg_write(ctx, client, offset, (val | (mask))); +} + +static int anx7625_write_and(struct anx7625_data *ctx, + struct i2c_client *client, + u8 offset, u8 mask) +{ + int val; + + val = anx7625_reg_read(ctx, client, offset); + if (val < 0) + return val; + + return anx7625_reg_write(ctx, client, offset, (val & (mask))); +} + +static int anx7625_write_and_or(struct anx7625_data *ctx, + struct i2c_client *client, + u8 offset, u8 and_mask, u8 or_mask) +{ + int val; + + val = anx7625_reg_read(ctx, client, offset); + if (val < 0) + return val; + + return anx7625_reg_write(ctx, client, + offset, (val & and_mask) | (or_mask)); +} + +static int anx7625_read_ctrl_status_p0(struct anx7625_data *ctx) +{ + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_CTRL_STATUS); +} + +static int wait_aux_op_finish(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int val; + int ret; + + ret = readx_poll_timeout(anx7625_read_ctrl_status_p0, + ctx, val, + (!(val & AP_AUX_CTRL_OP_EN) || (val < 0)), + 2000, + 2000 * 150); + if (ret) { + DRM_DEV_ERROR(dev, "aux operation fail!\n"); + return -EIO; + } + + val = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS); + if (val < 0 || (val & 0x0F)) { + DRM_DEV_ERROR(dev, "aux status %02x\n", val); + val = -EIO; + } + + return val; +} + +static int anx7625_video_mute_control(struct anx7625_data *ctx, + u8 status) +{ + int ret; + + if (status) { + /* Set mute on flag */ + ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_MIPI_MUTE); + /* Clear mipi RX en */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, (u8)~AP_MIPI_RX_EN); + } else { + /* Mute off flag */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, (u8)~AP_MIPI_MUTE); + /* Set MIPI RX EN */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_MIPI_RX_EN); + } + + return ret; +} + +static int anx7625_config_audio_input(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + /* Channel num */ + ret = anx7625_reg_write(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_6, I2S_CH_2 << 5); + + /* FS */ + ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_4, + 0xf0, AUDIO_FS_48K); + /* Word length */ + ret |= anx7625_write_and_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_5, + 0xf0, AUDIO_W_LEN_24_24MAX); + /* I2S */ + ret |= anx7625_write_or(ctx, ctx->i2c.tx_p2_client, + AUDIO_CHANNEL_STATUS_6, I2S_SLAVE_MODE); + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, + AUDIO_CONTROL_REGISTER, ~TDM_TIMING_MODE); + /* Audio change flag */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_AUDIO_CHG); + + if (ret < 0) + DRM_DEV_ERROR(dev, "fail to config audio.\n"); + + return ret; +} + +/* Reduction of fraction a/b */ +static void anx7625_reduction_of_a_fraction(unsigned long *a, unsigned long *b) +{ + unsigned long gcd_num; + unsigned long tmp_a, tmp_b; + u32 i = 1; + + gcd_num = gcd(*a, *b); + *a /= gcd_num; + *b /= gcd_num; + + tmp_a = *a; + tmp_b = *b; + + while ((*a > MAX_UNSIGNED_24BIT) || (*b > MAX_UNSIGNED_24BIT)) { + i++; + *a = tmp_a / i; + *b = tmp_b / i; + } + + /* + * In the end, make a, b larger to have higher ODFC PLL + * output frequency accuracy + */ + while ((*a < MAX_UNSIGNED_24BIT) && (*b < MAX_UNSIGNED_24BIT)) { + *a <<= 1; + *b <<= 1; + } + + *a >>= 1; + *b >>= 1; +} + +static int anx7625_calculate_m_n(u32 pixelclock, + unsigned long *m, + unsigned long *n, + u8 *post_divider) +{ + if (pixelclock > PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN) { + /* Pixel clock frequency is too high */ + DRM_ERROR("pixelclock too high, act(%d), maximum(%lu)\n", + pixelclock, + PLL_OUT_FREQ_ABS_MAX / POST_DIVIDER_MIN); + return -EINVAL; + } + + if (pixelclock < PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX) { + /* Pixel clock frequency is too low */ + DRM_ERROR("pixelclock too low, act(%d), maximum(%lu)\n", + pixelclock, + PLL_OUT_FREQ_ABS_MIN / POST_DIVIDER_MAX); + return -EINVAL; + } + + for (*post_divider = 1; + pixelclock < (PLL_OUT_FREQ_MIN / (*post_divider));) + *post_divider += 1; + + if (*post_divider > POST_DIVIDER_MAX) { + for (*post_divider = 1; + (pixelclock < + (PLL_OUT_FREQ_ABS_MIN / (*post_divider)));) + *post_divider += 1; + + if (*post_divider > POST_DIVIDER_MAX) { + DRM_ERROR("cannot find property post_divider(%d)\n", + *post_divider); + return -EDOM; + } + } + + /* Patch to improve the accuracy */ + if (*post_divider == 7) { + /* 27,000,000 is not divisible by 7 */ + *post_divider = 8; + } else if (*post_divider == 11) { + /* 27,000,000 is not divisible by 11 */ + *post_divider = 12; + } else if ((*post_divider == 13) || (*post_divider == 14)) { + /* 27,000,000 is not divisible by 13 or 14 */ + *post_divider = 15; + } + + if (pixelclock * (*post_divider) > PLL_OUT_FREQ_ABS_MAX) { + DRM_ERROR("act clock(%u) large than maximum(%lu)\n", + pixelclock * (*post_divider), + PLL_OUT_FREQ_ABS_MAX); + return -EDOM; + } + + *m = pixelclock; + *n = XTAL_FRQ / (*post_divider); + + anx7625_reduction_of_a_fraction(m, n); + + return 0; +} + +static int anx7625_odfc_config(struct anx7625_data *ctx, + u8 post_divider) +{ + int ret; + struct device *dev = &ctx->client->dev; + + /* Config input reference clock frequency 27MHz/19.2MHz */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, + ~(REF_CLK_27000KHZ << MIPI_FREF_D_IND)); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_16, + (REF_CLK_27000KHZ << MIPI_FREF_D_IND)); + /* Post divider */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, + MIPI_DIGITAL_PLL_8, 0x0f); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_8, + post_divider << 4); + + /* Add patch for MIS2-125 (5pcs ANX7625 fail ATE MBIST test) */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, + ~MIPI_PLL_VCO_TUNE_REG_VAL); + + /* Reset ODFC PLL */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, + ~MIPI_PLL_RESET_N); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_7, + MIPI_PLL_RESET_N); + + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error.\n"); + + return ret; +} + +static int anx7625_dsi_video_timing_config(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + unsigned long m, n; + u16 htotal; + int ret; + u8 post_divider = 0; + + ret = anx7625_calculate_m_n(ctx->dt.pixelclock.min * 1000, + &m, &n, &post_divider); + + if (ret) { + DRM_DEV_ERROR(dev, "cannot get property m n value.\n"); + return ret; + } + + DRM_DEV_DEBUG_DRIVER(dev, "compute M(%lu), N(%lu), divider(%d).\n", + m, n, post_divider); + + /* Configure pixel clock */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_L, + (ctx->dt.pixelclock.min / 1000) & 0xFF); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, PIXEL_CLOCK_H, + (ctx->dt.pixelclock.min / 1000) >> 8); + /* Lane count */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_0, 0xfc); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_0, 3); + + /* Htotal */ + htotal = ctx->dt.hactive.min + ctx->dt.hfront_porch.min + + ctx->dt.hback_porch.min + ctx->dt.hsync_len.min; + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_TOTAL_PIXELS_L, htotal & 0xFF); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_TOTAL_PIXELS_H, htotal >> 8); + /* Hactive */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_ACTIVE_PIXELS_L, ctx->dt.hactive.min & 0xFF); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_ACTIVE_PIXELS_H, ctx->dt.hactive.min >> 8); + /* HFP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_FRONT_PORCH_L, ctx->dt.hfront_porch.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_FRONT_PORCH_H, + ctx->dt.hfront_porch.min >> 8); + /* HWS */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_SYNC_WIDTH_L, ctx->dt.hsync_len.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_SYNC_WIDTH_H, ctx->dt.hsync_len.min >> 8); + /* HBP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_BACK_PORCH_L, ctx->dt.hback_porch.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + HORIZONTAL_BACK_PORCH_H, ctx->dt.hback_porch.min >> 8); + /* Vactive */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_L, + ctx->dt.vactive.min); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, ACTIVE_LINES_H, + ctx->dt.vactive.min >> 8); + /* VFP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + VERTICAL_FRONT_PORCH, ctx->dt.vfront_porch.min); + /* VWS */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + VERTICAL_SYNC_WIDTH, ctx->dt.vsync_len.min); + /* VBP */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p2_client, + VERTICAL_BACK_PORCH, ctx->dt.vback_porch.min); + /* M value */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_M_NUM_23_16, (m >> 16) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_M_NUM_15_8, (m >> 8) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_M_NUM_7_0, (m & 0xff)); + /* N value */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_N_NUM_23_16, (n >> 16) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PLL_N_NUM_15_8, (n >> 8) & 0xff); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_PLL_N_NUM_7_0, + (n & 0xff)); + /* Diff */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_DIGITAL_ADJ_1, 0x3D); + + ret |= anx7625_odfc_config(ctx, post_divider - 1); + + if (ret < 0) + DRM_DEV_ERROR(dev, "mipi dsi setup IO error.\n"); + + return ret; +} + +static int anx7625_swap_dsi_lane3(struct anx7625_data *ctx) +{ + int val; + struct device *dev = &ctx->client->dev; + + /* Swap MIPI-DSI data lane 3 P and N */ + val = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP); + if (val < 0) { + DRM_DEV_ERROR(dev, "IO error : access MIPI_SWAP.\n"); + return -EIO; + } + + val |= (1 << MIPI_SWAP_CH3); + return anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, MIPI_SWAP, val); +} + +static int anx7625_api_dsi_config(struct anx7625_data *ctx) + +{ + int val, ret; + struct device *dev = &ctx->client->dev; + + /* Swap MIPI-DSI data lane 3 P and N */ + ret = anx7625_swap_dsi_lane3(ctx); + if (ret < 0) { + DRM_DEV_ERROR(dev, "IO error : swap dsi lane 3 fail.\n"); + return ret; + } + + /* DSI clock settings */ + val = (0 << MIPI_HS_PWD_CLK) | + (0 << MIPI_HS_RT_CLK) | + (0 << MIPI_PD_CLK) | + (1 << MIPI_CLK_RT_MANUAL_PD_EN) | + (1 << MIPI_CLK_HS_MANUAL_PD_EN) | + (0 << MIPI_CLK_DET_DET_BYPASS) | + (0 << MIPI_CLK_MISS_CTRL) | + (0 << MIPI_PD_LPTX_CH_MANUAL_PD_EN); + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_PHY_CONTROL_3, val); + + /* + * Decreased HS prepare timing delay from 160ns to 80ns work with + * a) Dragon board 810 series (Qualcomm AP) + * b) Moving Pixel DSI source (PG3A pattern generator + + * P332 D-PHY Probe) default D-PHY timing + * 5ns/step + */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_TIME_HS_PRPR, 0x10); + + /* Enable DSI mode*/ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_18, + SELECT_DSI << MIPI_DPI_SELECT); + + ret |= anx7625_dsi_video_timing_config(ctx); + if (ret < 0) { + DRM_DEV_ERROR(dev, "dsi video timing config fail\n"); + return ret; + } + + /* Toggle m, n ready */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, + ~(MIPI_M_NUM_READY | MIPI_N_NUM_READY)); + usleep_range(1000, 1100); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, MIPI_DIGITAL_PLL_6, + MIPI_M_NUM_READY | MIPI_N_NUM_READY); + + /* Configure integer stable register */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_VIDEO_STABLE_CNT, 0x02); + /* Power on MIPI RX */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_10, 0x00); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p1_client, + MIPI_LANE_CTRL_10, 0x80); + + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error : mipi dsi enable init fail.\n"); + + return ret; +} + +static int anx7625_dsi_config(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "config dsi.\n"); + + /* DSC disable */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + R_DSC_CTRL_0, ~DSC_EN); + + ret |= anx7625_api_dsi_config(ctx); + + if (ret < 0) { + DRM_DEV_ERROR(dev, "IO error : api dsi config error.\n"); + return ret; + } + + /* Set MIPI RX EN */ + ret = anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_MIPI_RX_EN); + /* Clear mute flag */ + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, (u8)~AP_MIPI_MUTE); + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error : enable mipi rx fail.\n"); + else + DRM_DEV_DEBUG_DRIVER(dev, "success to config DSI\n"); + + return ret; +} + +static void anx7625_dp_start(struct anx7625_data *ctx) +{ + int ret; + struct device *dev = &ctx->client->dev; + + if (!ctx->display_timing_valid) { + DRM_DEV_ERROR(dev, "mipi not set display timing yet.\n"); + return; + } + + anx7625_config_audio_input(ctx); + + ret = anx7625_dsi_config(ctx); + + if (ret < 0) + DRM_DEV_ERROR(dev, "MIPI phy setup error.\n"); +} + +static void anx7625_dp_stop(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "stop dp output\n"); + + /* + * Video disable: 0x72:08 bit 7 = 0; + * Audio disable: 0x70:87 bit 0 = 0; + */ + ret = anx7625_write_and(ctx, ctx->i2c.tx_p0_client, 0x87, 0xfe); + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, 0x08, 0x7f); + + ret |= anx7625_video_mute_control(ctx, 1); + if (ret < 0) + DRM_DEV_ERROR(dev, "IO error : mute video fail\n"); +} + +static int sp_tx_rst_aux(struct anx7625_data *ctx) +{ + int ret; + + ret = anx7625_write_or(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, + AUX_RST); + ret |= anx7625_write_and(ctx, ctx->i2c.tx_p2_client, RST_CTRL2, + ~AUX_RST); + return ret; +} + +static int sp_tx_aux_wr(struct anx7625_data *ctx, u8 offset) +{ + int ret; + + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_BUFF_START, offset); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_COMMAND, 0x04); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); + return (ret | wait_aux_op_finish(ctx)); +} + +static int sp_tx_aux_rd(struct anx7625_data *ctx, u8 len_cmd) +{ + int ret; + + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_COMMAND, len_cmd); + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN); + return (ret | wait_aux_op_finish(ctx)); +} + +static int sp_tx_get_edid_block(struct anx7625_data *ctx) +{ + int c = 0; + struct device *dev = &ctx->client->dev; + + sp_tx_aux_wr(ctx, 0x7e); + sp_tx_aux_rd(ctx, 0x01); + c = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, AP_AUX_BUFF_START); + if (c < 0) { + DRM_DEV_ERROR(dev, "IO error : access AUX BUFF.\n"); + return -EIO; + } + + DRM_DEV_DEBUG_DRIVER(dev, " EDID Block = %d\n", c + 1); + + if (c > MAX_EDID_BLOCK) + c = 1; + + return c; +} + +static int edid_read(struct anx7625_data *ctx, + u8 offset, u8 *pblock_buf) +{ + int ret, cnt; + struct device *dev = &ctx->client->dev; + + for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { + sp_tx_aux_wr(ctx, offset); + /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ + ret = sp_tx_aux_rd(ctx, 0xf1); + + if (ret) { + sp_tx_rst_aux(ctx); + DRM_DEV_DEBUG_DRIVER(dev, "edid read fail, reset!\n"); + } else { + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, + AP_AUX_BUFF_START, + MAX_DPCD_BUFFER_SIZE, + pblock_buf); + if (ret > 0) + break; + } + } + + if (cnt > EDID_TRY_CNT) + return -EIO; + + return 0; +} + +static int segments_edid_read(struct anx7625_data *ctx, + u8 segment, u8 *buf, u8 offset) +{ + u8 cnt; + int ret; + struct device *dev = &ctx->client->dev; + + /* Write address only */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_7_0, 0x30); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_COMMAND, 0x04); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_CTRL_STATUS, + AP_AUX_CTRL_ADDRONLY | AP_AUX_CTRL_OP_EN); + + ret |= wait_aux_op_finish(ctx); + /* Write segment address */ + ret |= sp_tx_aux_wr(ctx, segment); + /* Data read */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_7_0, 0x50); + if (ret) { + DRM_DEV_ERROR(dev, "IO error : aux initial fail.\n"); + return ret; + } + + for (cnt = 0; cnt <= EDID_TRY_CNT; cnt++) { + sp_tx_aux_wr(ctx, offset); + /* Set I2C read com 0x01 mot = 0 and read 16 bytes */ + ret = sp_tx_aux_rd(ctx, 0xf1); + + if (ret) { + ret = sp_tx_rst_aux(ctx); + DRM_DEV_ERROR(dev, "segment read fail, reset!\n"); + } else { + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client, + AP_AUX_BUFF_START, + MAX_DPCD_BUFFER_SIZE, buf); + if (ret > 0) + break; + } + } + + if (cnt > EDID_TRY_CNT) + return -EIO; + + return 0; +} + +static int sp_tx_edid_read(struct anx7625_data *ctx, + u8 *pedid_blocks_buf) +{ + u8 offset, edid_pos; + int count, blocks_num; + u8 pblock_buf[MAX_DPCD_BUFFER_SIZE]; + u8 i, j; + u8 g_edid_break = 0; + int ret; + struct device *dev = &ctx->client->dev; + + /* Address initial */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_7_0, 0x50); + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_15_8, 0); + ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client, + AP_AUX_ADDR_19_16, 0xf0); + if (ret < 0) { + DRM_DEV_ERROR(dev, "access aux channel IO error.\n"); + return -EIO; + } + + blocks_num = sp_tx_get_edid_block(ctx); + if (blocks_num < 0) + return blocks_num; + + count = 0; + + do { + switch (count) { + case 0: + case 1: + for (i = 0; i < 8; i++) { + offset = (i + count * 8) * MAX_DPCD_BUFFER_SIZE; + g_edid_break = edid_read(ctx, offset, + pblock_buf); + + if (g_edid_break) + break; + + memcpy(&pedid_blocks_buf[offset], + pblock_buf, + MAX_DPCD_BUFFER_SIZE); + } + + break; + case 2: + offset = 0x00; + + for (j = 0; j < 8; j++) { + edid_pos = (j + count * 8) * + MAX_DPCD_BUFFER_SIZE; + + if (g_edid_break == 1) + break; + + segments_edid_read(ctx, count / 2, + pblock_buf, offset); + memcpy(&pedid_blocks_buf[edid_pos], + pblock_buf, + MAX_DPCD_BUFFER_SIZE); + offset = offset + 0x10; + } + + break; + case 3: + offset = 0x80; + + for (j = 0; j < 8; j++) { + edid_pos = (j + count * 8) * + MAX_DPCD_BUFFER_SIZE; + if (g_edid_break == 1) + break; + + segments_edid_read(ctx, count / 2, + pblock_buf, offset); + memcpy(&pedid_blocks_buf[edid_pos], + pblock_buf, + MAX_DPCD_BUFFER_SIZE); + offset = offset + 0x10; + } + + break; + default: + break; + } + + count++; + + } while (blocks_num >= count); + + /* Check edid data */ + if (!drm_edid_is_valid((struct edid *)pedid_blocks_buf)) { + DRM_DEV_ERROR(dev, "WARNING! edid check fail!\n"); + return -EINVAL; + } + + /* Reset aux channel */ + sp_tx_rst_aux(ctx); + + return (blocks_num + 1); +} + +static void anx7625_power_on(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + + if (!ctx->pdata.low_power_mode) { + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); + return; + } + + /* Power on pin enable */ + gpiod_set_value(ctx->pdata.gpio_p_on, 1); + usleep_range(10000, 11000); + /* Power reset pin enable */ + gpiod_set_value(ctx->pdata.gpio_reset, 1); + usleep_range(10000, 11000); + + DRM_DEV_DEBUG_DRIVER(dev, "power on !\n"); +} + +static void anx7625_power_standby(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + + if (!ctx->pdata.low_power_mode) { + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode!\n"); + return; + } + + gpiod_set_value(ctx->pdata.gpio_reset, 0); + usleep_range(1000, 1100); + gpiod_set_value(ctx->pdata.gpio_p_on, 0); + usleep_range(1000, 1100); + DRM_DEV_DEBUG_DRIVER(dev, "power down\n"); +} + +/* Basic configurations of ANX7625 */ +static void anx7625_config(struct anx7625_data *ctx) +{ + anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + XTAL_FRQ_SEL, XTAL_FRQ_27M); +} + +static void anx7625_disable_pd_protocol(struct anx7625_data *ctx) +{ + struct device *dev = &ctx->client->dev; + int ret; + + /* Reset main ocm */ + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x40); + /* Disable PD */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + AP_AV_STATUS, AP_DISABLE_PD); + /* Release main ocm */ + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, 0x88, 0x00); + + if (ret < 0) + DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature fail.\n"); + else + DRM_DEV_DEBUG_DRIVER(dev, "disable PD feature succeeded.\n"); +} + +static int anx7625_ocm_loading_check(struct anx7625_data *ctx) +{ + int ret; + struct device *dev = &ctx->client->dev; + + /* Check interface workable */ + ret = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + FLASH_LOAD_STA); + if (ret < 0) { + DRM_DEV_ERROR(dev, "IO error : access flash load.\n"); + return ret; + } + if ((ret & FLASH_LOAD_STA_CHK) != FLASH_LOAD_STA_CHK) + return -ENODEV; + + anx7625_disable_pd_protocol(ctx); + + DRM_DEV_DEBUG_DRIVER(dev, "Firmware ver %02x%02x,", + anx7625_reg_read(ctx, + ctx->i2c.rx_p0_client, + OCM_FW_VERSION), + anx7625_reg_read(ctx, + ctx->i2c.rx_p0_client, + OCM_FW_REVERSION)); + DRM_DEV_DEBUG_DRIVER(dev, "Driver version %s\n", + ANX7625_DRV_VERSION); + + return 0; +} + +static void anx7625_power_on_init(struct anx7625_data *ctx) +{ + int retry_count, i; + + for (retry_count = 0; retry_count < 3; retry_count++) { + anx7625_power_on(ctx); + anx7625_config(ctx); + + for (i = 0; i < OCM_LOADING_TIME; i++) { + if (!anx7625_ocm_loading_check(ctx)) + return; + usleep_range(1000, 1100); + } + anx7625_power_standby(ctx); + } +} + +static void anx7625_chip_control(struct anx7625_data *ctx, int state) +{ + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "before set, power_state(%d).\n", + atomic_read(&ctx->power_status)); + + if (!ctx->pdata.low_power_mode) + return; + + if (state) { + atomic_inc(&ctx->power_status); + if (atomic_read(&ctx->power_status) == 1) + anx7625_power_on_init(ctx); + } else { + if (atomic_read(&ctx->power_status)) { + atomic_dec(&ctx->power_status); + + if (atomic_read(&ctx->power_status) == 0) + anx7625_power_standby(ctx); + } + } + + DRM_DEV_DEBUG_DRIVER(dev, "after set, power_state(%d).\n", + atomic_read(&ctx->power_status)); +} + +static void anx7625_init_gpio(struct anx7625_data *platform) +{ + struct device *dev = &platform->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "init gpio\n"); + + /* Gpio for chip power enable */ + platform->pdata.gpio_p_on = + devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); + /* Gpio for chip reset */ + platform->pdata.gpio_reset = + devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + + if (platform->pdata.gpio_p_on && platform->pdata.gpio_reset) { + platform->pdata.low_power_mode = 1; + DRM_DEV_DEBUG_DRIVER(dev, "low power mode, pon %d, reset %d.\n", + desc_to_gpio(platform->pdata.gpio_p_on), + desc_to_gpio(platform->pdata.gpio_reset)); + } else { + platform->pdata.low_power_mode = 0; + DRM_DEV_DEBUG_DRIVER(dev, "not low power mode.\n"); + } +} + +static void anx7625_stop_dp_work(struct anx7625_data *ctx) +{ + ctx->hpd_status = 0; + ctx->hpd_high_cnt = 0; + ctx->display_timing_valid = 0; + + ctx->slimport_edid_p.edid_block_num = -1; + + if (ctx->pdata.low_power_mode == 0) + anx7625_disable_pd_protocol(ctx); +} + +static void anx7625_start_dp_work(struct anx7625_data *ctx) +{ + int ret; + struct device *dev = &ctx->client->dev; + + if (ctx->hpd_high_cnt >= 2) { + DRM_DEV_DEBUG_DRIVER(dev, "filter useless HPD\n"); + return; + } + + ctx->hpd_high_cnt++; + + /* Not support HDCP */ + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f); + + /* Try auth flag */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10); + /* Interrupt for DRM */ + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01); + if (ret < 0) + return; + + ret = anx7625_reg_read(ctx, ctx->i2c.rx_p1_client, 0x86); + if (ret < 0) + return; + + DRM_DEV_DEBUG_DRIVER(dev, "Secure OCM version=%02x\n", ret); +} + +static int anx7625_read_hpd_status_p0(struct anx7625_data *ctx) +{ + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, SYSTEM_STSTUS); +} + +static void anx7625_hpd_polling(struct anx7625_data *ctx) +{ + int ret, val; + struct device *dev = &ctx->client->dev; + + if (atomic_read(&ctx->power_status) != 1) { + DRM_DEV_DEBUG_DRIVER(dev, "No need to poling HPD status.\n"); + return; + } + + ret = readx_poll_timeout(anx7625_read_hpd_status_p0, + ctx, val, + ((val & HPD_STATUS) || (val < 0)), + 5000, + 5000 * 100); + if (ret) { + DRM_DEV_ERROR(dev, "HPD polling timeout!\n"); + } else { + DRM_DEV_DEBUG_DRIVER(dev, "HPD raise up.\n"); + anx7625_reg_write(ctx, ctx->i2c.tcpc_client, + INTR_ALERT_1, 0xFF); + anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + INTERFACE_CHANGE_INT, 0); + } + + anx7625_start_dp_work(ctx); +} + +static void anx7625_disconnect_check(struct anx7625_data *ctx) +{ + if (atomic_read(&ctx->power_status) == 0) + anx7625_stop_dp_work(ctx); +} + +static void anx7625_low_power_mode_check(struct anx7625_data *ctx, + int state) +{ + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "low power mode check, state(%d).\n", state); + + if (ctx->pdata.low_power_mode) { + anx7625_chip_control(ctx, state); + if (state) + anx7625_hpd_polling(ctx); + else + anx7625_disconnect_check(ctx); + } +} + +static void dp_hpd_change_handler(struct anx7625_data *ctx, bool on) +{ + struct device *dev = &ctx->client->dev; + + /* HPD changed */ + DRM_DEV_DEBUG_DRIVER(dev, "dp_hpd_change_default_func: %d\n", + (u32)on); + + if (on == 0) { + DRM_DEV_DEBUG_DRIVER(dev, " HPD low\n"); + anx7625_stop_dp_work(ctx); + } else { + DRM_DEV_DEBUG_DRIVER(dev, " HPD high\n"); + anx7625_start_dp_work(ctx); + } + + ctx->hpd_status = 1; +} + +static int anx7625_hpd_change_detect(struct anx7625_data *ctx) +{ + int intr_vector, status; + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "power_status=%d\n", + (u32)atomic_read(&ctx->power_status)); + + status = anx7625_reg_write(ctx, ctx->i2c.tcpc_client, + INTR_ALERT_1, 0xFF); + if (status < 0) { + DRM_DEV_ERROR(dev, "cannot clear alert reg.\n"); + return status; + } + + intr_vector = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + INTERFACE_CHANGE_INT); + if (intr_vector < 0) { + DRM_DEV_ERROR(dev, "cannot access interrupt change reg.\n"); + return intr_vector; + } + DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x44=%x\n", intr_vector); + status = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client, + INTERFACE_CHANGE_INT, + intr_vector & (~intr_vector)); + if (status < 0) { + DRM_DEV_ERROR(dev, "cannot clear interrupt change reg.\n"); + return status; + } + + if (!(intr_vector & HPD_STATUS_CHANGE)) + return -ENOENT; + + status = anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, + SYSTEM_STSTUS); + if (status < 0) { + DRM_DEV_ERROR(dev, "cannot clear interrupt status.\n"); + return status; + } + + DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x45=%x\n", status); + dp_hpd_change_handler(ctx, status & HPD_STATUS); + + return 0; +} + +static void anx7625_work_func(struct work_struct *work) +{ + int event; + struct anx7625_data *ctx = container_of(work, + struct anx7625_data, work); + + mutex_lock(&ctx->lock); + event = anx7625_hpd_change_detect(ctx); + mutex_unlock(&ctx->lock); + if (event < 0) + return; + + if (ctx->bridge_attached) + drm_helper_hpd_irq_event(ctx->connector.dev); +} + +static irqreturn_t anx7625_intr_hpd_isr(int irq, void *data) +{ + struct anx7625_data *ctx = (struct anx7625_data *)data; + + if (atomic_read(&ctx->power_status) != 1) + return IRQ_NONE; + + queue_work(ctx->workqueue, &ctx->work); + + return IRQ_HANDLED; +} + +static int anx7625_parse_dt(struct device *dev, + struct anx7625_platform_data *pdata) +{ + struct device_node *np = dev->of_node; + struct device_node *panel_node, *out_ep; + + pdata->node.mipi_dsi_host_node = of_graph_get_remote_node(np, 0, 0); + if (!pdata->node.mipi_dsi_host_node) { + DRM_DEV_ERROR(dev, "fail to get internal panel.\n"); + return -EPROBE_DEFER; + } + + of_node_put(pdata->node.mipi_dsi_host_node); + DRM_DEV_DEBUG_DRIVER(dev, "found dsi host node.\n"); + + pdata->node.panel_node = of_graph_get_port_by_id(np, 1); + if (!pdata->node.panel_node) { + DRM_DEV_ERROR(dev, "fail to get panel node.\n"); + return -EPROBE_DEFER; + } + + of_node_put(pdata->node.panel_node); + out_ep = of_get_child_by_name(pdata->node.panel_node, + "endpoint"); + if (!out_ep) { + DRM_DEV_DEBUG_DRIVER(dev, "cannot get endpoint.\n"); + return -EPROBE_DEFER; + } + + panel_node = of_graph_get_remote_port_parent(out_ep); + of_node_put(out_ep); + pdata->panel = of_drm_find_panel(panel_node); + DRM_DEV_DEBUG_DRIVER(dev, "get panel node.\n"); + + of_node_put(panel_node); + if (IS_ERR_OR_NULL(pdata->panel)) + return -EPROBE_DEFER; + + return 0; +} + +static inline struct anx7625_data *connector_to_anx7625(struct drm_connector *c) +{ + return container_of(c, struct anx7625_data, connector); +} + +static inline struct anx7625_data *bridge_to_anx7625(struct drm_bridge *bridge) +{ + return container_of(bridge, struct anx7625_data, bridge); +} + +static void anx7625_post_disable(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "post disable\n"); + + if (!ctx->pdata.panel) + return; + + ret = drm_panel_unprepare(ctx->pdata.panel); + if (ret) + DRM_DEV_ERROR(dev, "fail to unprepare panel: %d\n", ret); + else + DRM_DEV_DEBUG_DRIVER(dev, "backlight unprepared.\n"); + + atomic_set(&ctx->panel_power, 0); +} + +static void anx7625_pre_enable(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "pre enable\n"); + + if (!ctx->pdata.panel) + return; + + ret = drm_panel_prepare(ctx->pdata.panel); + if (ret < 0) + DRM_DEV_ERROR(dev, "fail to prepare panel: %d\n", ret); + else + DRM_DEV_DEBUG_DRIVER(dev, "backlight prepared.\n"); + atomic_set(&ctx->panel_power, 1); +} + +static int anx7625_get_modes(struct drm_connector *connector) +{ + struct anx7625_data *ctx = connector_to_anx7625(connector); + int err, num_modes = 0; + int turn_off_flag = 0; + struct s_edid_data *p_edid = &ctx->slimport_edid_p; + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm get modes\n"); + + if (ctx->slimport_edid_p.edid_block_num > 0) + goto out; + + if (ctx->pdata.panel && atomic_read(&ctx->panel_power) == 0) { + turn_off_flag = 1; + anx7625_pre_enable(&ctx->bridge); + } + + anx7625_low_power_mode_check(ctx, 1); + + p_edid->edid_block_num = sp_tx_edid_read(ctx, p_edid->edid_raw_data); + + err = -EIO; + if (p_edid->edid_block_num < 0) { + DRM_DEV_ERROR(dev, "Fail to read EDID.\n"); + goto fail; + } + + err = drm_connector_update_edid_property(connector, + (struct edid *) + &p_edid->edid_raw_data); + + if (err) + DRM_DEV_ERROR(dev, "Fail to update EDID property: %d\n", err); + +fail: + anx7625_low_power_mode_check(ctx, 0); + if (ctx->pdata.panel && turn_off_flag == 1) + anx7625_post_disable(&ctx->bridge); + + if (err) + return err; + +out: + num_modes = drm_add_edid_modes(connector, + (struct edid *)&p_edid->edid_raw_data); + DRM_DEV_DEBUG_DRIVER(dev, "num_modes(%d)\n", num_modes); + + return num_modes; +} + +static enum drm_mode_status +anx7625_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) +{ + struct anx7625_data *ctx = connector_to_anx7625(connector); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm modes valid verify\n"); + + if (mode->clock > SUPPORT_PIXEL_CLOCK) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + +static struct drm_connector_helper_funcs anx7625_connector_helper_funcs = { + .get_modes = anx7625_get_modes, + .mode_valid = anx7625_connector_mode_valid, +}; + +static enum drm_connector_status anx7625_detect(struct drm_connector *connector, + bool force) +{ + struct anx7625_data *ctx = connector_to_anx7625(connector); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm detect\n"); + + return connector_status_connected; +} + +static const struct drm_connector_funcs anx7625_connector_funcs = { + .fill_modes = drm_helper_probe_single_connector_modes, + .detect = anx7625_detect, + .destroy = drm_connector_cleanup, + .reset = drm_atomic_helper_connector_reset, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, +}; + +static int anx7625_attach_dsi(struct anx7625_data *ctx) +{ + struct mipi_dsi_host *host; + struct mipi_dsi_device *dsi; + struct device_node *mipi_host_node; + struct device *dev = &ctx->client->dev; + const struct mipi_dsi_device_info info = { + .type = "anx7625", + .channel = 0, + .node = NULL, + }; + + DRM_DEV_DEBUG_DRIVER(dev, "attach dsi\n"); + + mipi_host_node = ctx->pdata.node.mipi_dsi_host_node; + + if (!mipi_host_node) { + DRM_DEV_ERROR(dev, "dsi host is not configured.\n"); + return -EINVAL; + } + + host = of_find_mipi_dsi_host_by_node(mipi_host_node); + if (!host) { + DRM_DEV_ERROR(dev, "fail to find dsi host.\n"); + return -EINVAL; + } + + dsi = mipi_dsi_device_register_full(host, &info); + if (IS_ERR(dsi)) { + DRM_DEV_ERROR(dev, "fail to create dsi device.\n"); + return -EINVAL; + } + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | + MIPI_DSI_MODE_VIDEO_SYNC_PULSE | + MIPI_DSI_MODE_EOT_PACKET | + MIPI_DSI_MODE_VIDEO_HSE; + + if (mipi_dsi_attach(dsi) < 0) { + DRM_DEV_ERROR(dev, "fail to attach dsi to host.\n"); + mipi_dsi_device_unregister(dsi); + return -EINVAL; + } + + ctx->dsi = dsi; + + DRM_DEV_DEBUG_DRIVER(dev, "attach dsi succeeded.\n"); + + return 0; +} + +static void anx7625_bridge_detach(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + + if (ctx->dsi) { + mipi_dsi_detach(ctx->dsi); + mipi_dsi_device_unregister(ctx->dsi); + } + + if (ctx->bridge_attached) + drm_connector_unregister(&ctx->connector); +} + +static int anx7625_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + int err; + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm attach\n"); + if (!bridge->encoder) { + DRM_DEV_ERROR(dev, "Parent encoder object not found"); + return -ENODEV; + } + + err = drm_connector_init(bridge->dev, &ctx->connector, + &anx7625_connector_funcs, + DRM_MODE_CONNECTOR_eDP); + if (err) { + DRM_DEV_ERROR(dev, "Fail to initialize connector: %d\n", err); + return err; + } + + drm_connector_helper_add(&ctx->connector, + &anx7625_connector_helper_funcs); + + err = drm_connector_register(&ctx->connector); + if (err) { + DRM_DEV_ERROR(dev, "Fail to register connector: %d\n", err); + return err; + } + + ctx->connector.polled = DRM_CONNECTOR_POLL_HPD; + + err = drm_connector_attach_encoder(&ctx->connector, bridge->encoder); + if (err) { + DRM_DEV_ERROR(dev, "Fail to attach encoder: %d\n", err); + drm_connector_unregister(&ctx->connector); + return err; + } + + err = anx7625_attach_dsi(ctx); + if (err) { + DRM_DEV_ERROR(dev, "Fail to attach to dsi : %d\n", err); + drm_connector_unregister(&ctx->connector); + return err; + } + + ctx->bridge_attached = 1; + + return 0; +} + +static enum drm_mode_status +anx7625_bridge_mode_valid(struct drm_bridge *bridge, + const struct drm_display_mode *mode) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode checking\n"); + + /* Max 1200p at 5.4 Ghz, one lane, pixel clock 300M */ + if (mode->clock > SUPPORT_PIXEL_CLOCK) { + DRM_DEV_DEBUG_DRIVER(dev, + "drm mode invalid, pixelclock too high.\n"); + return MODE_CLOCK_HIGH; + } + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode valid.\n"); + + return MODE_OK; +} + +static void anx7625_bridge_mode_set(struct drm_bridge *bridge, + const struct drm_display_mode *old_mode, + const struct drm_display_mode *mode) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode set\n"); + + ctx->dt.pixelclock.min = mode->clock; + ctx->dt.hactive.min = mode->hdisplay; + ctx->dt.hsync_len.min = mode->hsync_end - mode->hsync_start; + ctx->dt.hfront_porch.min = mode->hsync_start - mode->hdisplay; + ctx->dt.hback_porch.min = mode->htotal - mode->hsync_end; + ctx->dt.vactive.min = mode->vdisplay; + ctx->dt.vsync_len.min = mode->vsync_end - mode->vsync_start; + ctx->dt.vfront_porch.min = mode->vsync_start - mode->vdisplay; + ctx->dt.vback_porch.min = mode->vtotal - mode->vsync_end; + + ctx->display_timing_valid = 1; + + DRM_DEV_DEBUG_DRIVER(dev, "pixelclock(%d).\n", ctx->dt.pixelclock.min); + DRM_DEV_DEBUG_DRIVER(dev, "hactive(%d), hsync(%d), hfp(%d), hbp(%d)\n", + ctx->dt.hactive.min, + ctx->dt.hsync_len.min, + ctx->dt.hfront_porch.min, + ctx->dt.hback_porch.min); + DRM_DEV_DEBUG_DRIVER(dev, "vactive(%d), vsync(%d), vfp(%d), vbp(%d)\n", + ctx->dt.vactive.min, + ctx->dt.vsync_len.min, + ctx->dt.vfront_porch.min, + ctx->dt.vback_porch.min); + DRM_DEV_DEBUG_DRIVER(dev, "hdisplay(%d),hsync_start(%d).\n", + mode->hdisplay, + mode->hsync_start); + DRM_DEV_DEBUG_DRIVER(dev, "hsync_end(%d),htotal(%d).\n", + mode->hsync_end, + mode->htotal); + DRM_DEV_DEBUG_DRIVER(dev, "vdisplay(%d),vsync_start(%d).\n", + mode->vdisplay, + mode->vsync_start); + DRM_DEV_DEBUG_DRIVER(dev, "vsync_end(%d),vtotal(%d).\n", + mode->vsync_end, + mode->vtotal); +} + +static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge, + const struct drm_display_mode *mode, + struct drm_display_mode *adj) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + u32 hsync, hfp, hbp, hblanking; + u32 adj_hsync, adj_hfp, adj_hbp, adj_hblanking, delta_adj; + u32 vref, adj_clock; + + DRM_DEV_DEBUG_DRIVER(dev, "drm mode fixup set\n"); + + hsync = mode->hsync_end - mode->hsync_start; + hfp = mode->hsync_start - mode->hdisplay; + hbp = mode->htotal - mode->hsync_end; + hblanking = mode->htotal - mode->hdisplay; + + DRM_DEV_DEBUG_DRIVER(dev, "before mode fixup\n"); + DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", + hsync, hfp, hbp, adj->clock); + DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", + adj->hsync_start, adj->hsync_end, adj->htotal); + + adj_hfp = hfp; + adj_hsync = hsync; + adj_hbp = hbp; + adj_hblanking = hblanking; + + /* HFP needs to be even */ + if (hfp & 0x1) { + adj_hfp += 1; + adj_hblanking += 1; + } + + /* HBP needs to be even */ + if (hbp & 0x1) { + adj_hbp -= 1; + adj_hblanking -= 1; + } + + /* HSYNC needs to be even */ + if (hsync & 0x1) { + if (adj_hblanking < hblanking) + adj_hsync += 1; + else + adj_hsync -= 1; + } + + /* + * Once illegal timing detected, use default HFP, HSYNC, HBP + * This adjusting made for built-in eDP panel, for the externel + * DP monitor, may need return false. + */ + if (hblanking < HBLANKING_MIN || (hfp < HP_MIN && hbp < HP_MIN)) { + adj_hsync = SYNC_LEN_DEF; + adj_hfp = HFP_HBP_DEF; + adj_hbp = HFP_HBP_DEF; + vref = adj->clock * 1000 / (adj->htotal * adj->vtotal); + if (hblanking < HBLANKING_MIN) { + delta_adj = HBLANKING_MIN - hblanking; + adj_clock = vref * delta_adj * adj->vtotal; + adj->clock += DIV_ROUND_UP(adj_clock, 1000); + } else { + delta_adj = hblanking - HBLANKING_MIN; + adj_clock = vref * delta_adj * adj->vtotal; + adj->clock -= DIV_ROUND_UP(adj_clock, 1000); + } + + DRM_WARN("illegal hblanking timing, use default.\n"); + DRM_WARN("hfp(%d), hbp(%d), hsync(%d).\n", hfp, hbp, hsync); + } else if (adj_hfp < HP_MIN) { + /* Adjust hfp if hfp less than HP_MIN */ + delta_adj = HP_MIN - adj_hfp; + adj_hfp = HP_MIN; + + /* + * Balance total HBlanking pixel, if HBP does not have enough + * space, adjust HSYNC length, otherwise adjust HBP + */ + if ((adj_hbp - delta_adj) < HP_MIN) + /* HBP not enough space */ + adj_hsync -= delta_adj; + else + adj_hbp -= delta_adj; + } else if (adj_hbp < HP_MIN) { + delta_adj = HP_MIN - adj_hbp; + adj_hbp = HP_MIN; + + /* + * Balance total HBlanking pixel, if HBP hasn't enough space, + * adjust HSYNC length, otherwize adjust HBP + */ + if ((adj_hfp - delta_adj) < HP_MIN) + /* HFP not enough space */ + adj_hsync -= delta_adj; + else + adj_hfp -= delta_adj; + } + + DRM_DEV_DEBUG_DRIVER(dev, "after mode fixup\n"); + DRM_DEV_DEBUG_DRIVER(dev, "hsync(%d), hfp(%d), hbp(%d), clock(%d)\n", + adj_hsync, adj_hfp, adj_hbp, adj->clock); + + /* Reconstruct timing */ + adj->hsync_start = adj->hdisplay + adj_hfp; + adj->hsync_end = adj->hsync_start + adj_hsync; + adj->htotal = adj->hsync_end + adj_hbp; + DRM_DEV_DEBUG_DRIVER(dev, "hsync_start(%d), hsync_end(%d), htot(%d)\n", + adj->hsync_start, adj->hsync_end, adj->htotal); + + return true; +} + +static void anx7625_bridge_enable(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + int ret; + + DRM_DEV_DEBUG_DRIVER(dev, "drm enable\n"); + + anx7625_low_power_mode_check(ctx, 1); + + if (WARN_ON(!atomic_read(&ctx->power_status))) + return; + + if (ctx->pdata.panel) { + ret = drm_panel_enable(ctx->pdata.panel); + if (ret < 0) { + DRM_DEV_ERROR(dev, "fail to enable panel: %d.\n", ret); + return; + } + } + + anx7625_dp_start(ctx); +} + +static void anx7625_bridge_disable(struct drm_bridge *bridge) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + int ret; + + if (WARN_ON(!atomic_read(&ctx->power_status))) + return; + + DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n"); + + if (ctx->pdata.panel) { + ret = drm_panel_disable(ctx->pdata.panel); + if (ret < 0) + DRM_DEV_ERROR(dev, "fail to disable panel: %d.\n", ret); + } + + DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n"); + + anx7625_dp_stop(ctx); + + anx7625_low_power_mode_check(ctx, 0); +} + +static const struct drm_bridge_funcs anx7625_bridge_funcs = { + .attach = anx7625_bridge_attach, + .detach = anx7625_bridge_detach, + .disable = anx7625_bridge_disable, + .post_disable = anx7625_post_disable, + .pre_enable = anx7625_pre_enable, + .mode_valid = anx7625_bridge_mode_valid, + .mode_set = anx7625_bridge_mode_set, + .mode_fixup = anx7625_bridge_mode_fixup, + .enable = anx7625_bridge_enable, +}; + +static int anx7625_register_i2c_dummy_clients(struct anx7625_data *ctx, + struct i2c_client *client) +{ + ctx->i2c.tx_p0_client = i2c_new_dummy_device(client->adapter, + TX_P0_ADDR >> 1); + if (!ctx->i2c.tx_p0_client) + return -ENOMEM; + + ctx->i2c.tx_p1_client = i2c_new_dummy_device(client->adapter, + TX_P1_ADDR >> 1); + if (!ctx->i2c.tx_p1_client) + goto free_tx_p0; + + ctx->i2c.tx_p2_client = i2c_new_dummy_device(client->adapter, + TX_P2_ADDR >> 1); + if (!ctx->i2c.tx_p2_client) + goto free_tx_p1; + + ctx->i2c.rx_p0_client = i2c_new_dummy_device(client->adapter, + RX_P0_ADDR >> 1); + if (!ctx->i2c.rx_p0_client) + goto free_tx_p2; + + ctx->i2c.rx_p1_client = i2c_new_dummy_device(client->adapter, + RX_P1_ADDR >> 1); + if (!ctx->i2c.rx_p1_client) + goto free_rx_p0; + + ctx->i2c.rx_p2_client = i2c_new_dummy_device(client->adapter, + RX_P2_ADDR >> 1); + if (!ctx->i2c.rx_p2_client) + goto free_rx_p1; + + ctx->i2c.tcpc_client = i2c_new_dummy_device(client->adapter, + TCPC_INTERFACE_ADDR >> 1); + if (!ctx->i2c.tcpc_client) + goto free_rx_p2; + + return 0; + +free_rx_p2: + i2c_unregister_device(ctx->i2c.rx_p2_client); +free_rx_p1: + i2c_unregister_device(ctx->i2c.rx_p1_client); +free_rx_p0: + i2c_unregister_device(ctx->i2c.rx_p0_client); +free_tx_p2: + i2c_unregister_device(ctx->i2c.tx_p2_client); +free_tx_p1: + i2c_unregister_device(ctx->i2c.tx_p1_client); +free_tx_p0: + i2c_unregister_device(ctx->i2c.tx_p0_client); + + return -ENOMEM; +} + +static void anx7625_unregister_i2c_dummy_clients(struct anx7625_data *ctx) +{ + i2c_unregister_device(ctx->i2c.tx_p0_client); + i2c_unregister_device(ctx->i2c.tx_p1_client); + i2c_unregister_device(ctx->i2c.tx_p2_client); + i2c_unregister_device(ctx->i2c.rx_p0_client); + i2c_unregister_device(ctx->i2c.rx_p1_client); + i2c_unregister_device(ctx->i2c.rx_p2_client); + i2c_unregister_device(ctx->i2c.tcpc_client); +} + +static int anx7625_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct anx7625_data *platform; + struct anx7625_platform_data *pdata; + int ret = 0; + struct device *dev = &client->dev; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_I2C_BLOCK)) { + DRM_DEV_ERROR(dev, "anx7625's i2c bus doesn't support\n"); + return -ENODEV; + } + + platform = kzalloc(sizeof(*platform), GFP_KERNEL); + if (!platform) { + DRM_DEV_ERROR(dev, "fail to allocate driver data\n"); + return -ENOMEM; + } + + pdata = &platform->pdata; + + ret = anx7625_parse_dt(dev, pdata); + if (ret) { + DRM_DEV_ERROR(dev, "fail to parse devicetree.\n"); + goto free_platform; + } + + platform->client = client; + i2c_set_clientdata(client, platform); + + anx7625_init_gpio(platform); + + atomic_set(&platform->power_status, 0); + + mutex_init(&platform->lock); + + platform->pdata.intp_irq = client->irq; + if (platform->pdata.intp_irq) { + INIT_WORK(&platform->work, anx7625_work_func); + platform->workqueue = create_workqueue("anx7625_work"); + if (!platform->workqueue) { + DRM_DEV_ERROR(dev, "fail to create work queue\n"); + ret = -ENOMEM; + goto free_platform; + } + + ret = devm_request_threaded_irq(dev, platform->pdata.intp_irq, + NULL, anx7625_intr_hpd_isr, + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + "anx7625-intp", platform); + if (ret) { + DRM_DEV_ERROR(dev, "fail to request irq\n"); + goto free_wq; + } + } + + if (anx7625_register_i2c_dummy_clients(platform, client) != 0) { + ret = -ENOMEM; + DRM_DEV_ERROR(dev, "fail to reserve I2C bus.\n"); + goto free_wq; + } + + if (platform->pdata.low_power_mode == 0) { + anx7625_disable_pd_protocol(platform); + atomic_set(&platform->power_status, 1); + } + + /* Add work function */ + if (platform->pdata.intp_irq) + queue_work(platform->workqueue, &platform->work); + + platform->bridge.funcs = &anx7625_bridge_funcs; + platform->bridge.of_node = client->dev.of_node; + drm_bridge_add(&platform->bridge); + + DRM_DEV_DEBUG_DRIVER(dev, "probe done\n"); + + return 0; + +free_wq: + if (platform->workqueue) + destroy_workqueue(platform->workqueue); + +free_platform: + kfree(platform); + + return ret; +} + +static int anx7625_i2c_remove(struct i2c_client *client) +{ + struct anx7625_data *platform = i2c_get_clientdata(client); + + drm_bridge_remove(&platform->bridge); + + if (platform->pdata.intp_irq) + destroy_workqueue(platform->workqueue); + + anx7625_unregister_i2c_dummy_clients(platform); + + kfree(platform); + return 0; +} + +static const struct i2c_device_id anx7625_id[] = { + {"anx7625", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, anx7625_id); + +static const struct of_device_id anx_match_table[] = { + {.compatible = "analogix,anx7625",}, + {}, +}; + +static struct i2c_driver anx7625_driver = { + .driver = { + .name = "anx7625", + .of_match_table = anx_match_table, + }, + .probe = anx7625_i2c_probe, + .remove = anx7625_i2c_remove, + + .id_table = anx7625_id, +}; + +module_i2c_driver(anx7625_driver); + +MODULE_DESCRIPTION("MIPI2DP anx7625 driver"); +MODULE_AUTHOR("Xin Ji <xji@analogixsemi.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(ANX7625_DRV_VERSION); diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h new file mode 100644 index 0000000..79e6534 --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix/anx7625.h @@ -0,0 +1,397 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright(c) 2020, Analogix Semiconductor. All rights reserved. + * + */ + +#ifndef __ANX7625_H__ +#define __ANX7625_H__ + +#define ANX7625_DRV_VERSION "0.1.04" + +/* Loading OCM re-trying times */ +#define OCM_LOADING_TIME 10 + +/********* ANX7625 Register **********/ +#define TX_P0_ADDR 0x70 +#define TX_P1_ADDR 0x7A +#define TX_P2_ADDR 0x72 + +#define RX_P0_ADDR 0x7e +#define RX_P1_ADDR 0x84 +#define RX_P2_ADDR 0x54 + +#define RSVD_00_ADDR 0x00 +#define RSVD_D1_ADDR 0xD1 +#define RSVD_60_ADDR 0x60 +#define RSVD_39_ADDR 0x39 +#define RSVD_7F_ADDR 0x7F + +#define TCPC_INTERFACE_ADDR 0x58 + +/* Clock frequency in Hz */ +#define XTAL_FRQ (27 * 1000000) + +#define POST_DIVIDER_MIN 1 +#define POST_DIVIDER_MAX 16 +#define PLL_OUT_FREQ_MIN 520000000UL +#define PLL_OUT_FREQ_MAX 730000000UL +#define PLL_OUT_FREQ_ABS_MIN 300000000UL +#define PLL_OUT_FREQ_ABS_MAX 800000000UL +#define MAX_UNSIGNED_24BIT 16777215UL + +/***************************************************************/ +/* Register definition of device address 0x58 */ + +#define PRODUCT_ID_L 0x02 +#define PRODUCT_ID_H 0x03 + +#define INTR_ALERT_1 0xCC +#define INTR_SOFTWARE_INT BIT(3) +#define INTR_RECEIVED_MSG BIT(5) + +#define SYSTEM_STSTUS 0x45 +#define INTERFACE_CHANGE_INT 0x44 +#define HPD_STATUS_CHANGE 0x80 +#define HPD_STATUS 0x80 + +/******** END of I2C Address 0x58 ********/ + +/***************************************************************/ +/* Register definition of device address 0x70 */ +#define I2C_ADDR_70_DPTX 0x70 + +#define SP_TX_LINK_BW_SET_REG 0xA0 +#define SP_TX_LANE_COUNT_SET_REG 0xA1 + +#define M_VID_0 0xC0 +#define M_VID_1 0xC1 +#define M_VID_2 0xC2 +#define N_VID_0 0xC3 +#define N_VID_1 0xC4 +#define N_VID_2 0xC5 + +/***************************************************************/ +/* Register definition of device address 0x72 */ +#define AUX_RST 0x04 +#define RST_CTRL2 0x07 + +#define SP_TX_TOTAL_LINE_STA_L 0x24 +#define SP_TX_TOTAL_LINE_STA_H 0x25 +#define SP_TX_ACT_LINE_STA_L 0x26 +#define SP_TX_ACT_LINE_STA_H 0x27 +#define SP_TX_V_F_PORCH_STA 0x28 +#define SP_TX_V_SYNC_STA 0x29 +#define SP_TX_V_B_PORCH_STA 0x2A +#define SP_TX_TOTAL_PIXEL_STA_L 0x2B +#define SP_TX_TOTAL_PIXEL_STA_H 0x2C +#define SP_TX_ACT_PIXEL_STA_L 0x2D +#define SP_TX_ACT_PIXEL_STA_H 0x2E +#define SP_TX_H_F_PORCH_STA_L 0x2F +#define SP_TX_H_F_PORCH_STA_H 0x30 +#define SP_TX_H_SYNC_STA_L 0x31 +#define SP_TX_H_SYNC_STA_H 0x32 +#define SP_TX_H_B_PORCH_STA_L 0x33 +#define SP_TX_H_B_PORCH_STA_H 0x34 + +#define SP_TX_VID_CTRL 0x84 +#define SP_TX_BPC_MASK 0xE0 +#define SP_TX_BPC_6 0x00 +#define SP_TX_BPC_8 0x20 +#define SP_TX_BPC_10 0x40 +#define SP_TX_BPC_12 0x60 + +#define VIDEO_BIT_MATRIX_12 0x4c + +#define AUDIO_CHANNEL_STATUS_1 0xd0 +#define AUDIO_CHANNEL_STATUS_2 0xd1 +#define AUDIO_CHANNEL_STATUS_3 0xd2 +#define AUDIO_CHANNEL_STATUS_4 0xd3 +#define AUDIO_CHANNEL_STATUS_5 0xd4 +#define AUDIO_CHANNEL_STATUS_6 0xd5 +#define TDM_SLAVE_MODE 0x10 +#define I2S_SLAVE_MODE 0x08 + +#define AUDIO_CONTROL_REGISTER 0xe6 +#define TDM_TIMING_MODE 0x08 + +#define I2C_ADDR_72_DPTX 0x72 + +#define HP_MIN 8 +#define HBLANKING_MIN 80 +#define SYNC_LEN_DEF 32 +#define HFP_HBP_DEF ((HBLANKING_MIN - SYNC_LEN_DEF) / 2) +#define VIDEO_CONTROL_0 0x08 + +#define ACTIVE_LINES_L 0x14 +#define ACTIVE_LINES_H 0x15 /* Bit[7:6] are reserved */ +#define VERTICAL_FRONT_PORCH 0x16 +#define VERTICAL_SYNC_WIDTH 0x17 +#define VERTICAL_BACK_PORCH 0x18 + +#define HORIZONTAL_TOTAL_PIXELS_L 0x19 +#define HORIZONTAL_TOTAL_PIXELS_H 0x1A /* Bit[7:6] are reserved */ +#define HORIZONTAL_ACTIVE_PIXELS_L 0x1B +#define HORIZONTAL_ACTIVE_PIXELS_H 0x1C /* Bit[7:6] are reserved */ +#define HORIZONTAL_FRONT_PORCH_L 0x1D +#define HORIZONTAL_FRONT_PORCH_H 0x1E /* Bit[7:4] are reserved */ +#define HORIZONTAL_SYNC_WIDTH_L 0x1F +#define HORIZONTAL_SYNC_WIDTH_H 0x20 /* Bit[7:4] are reserved */ +#define HORIZONTAL_BACK_PORCH_L 0x21 +#define HORIZONTAL_BACK_PORCH_H 0x22 /* Bit[7:4] are reserved */ + +/******** END of I2C Address 0x72 *********/ +/***************************************************************/ +/* Register definition of device address 0x7e */ + +#define I2C_ADDR_7E_FLASH_CONTROLLER 0x7E + +#define FLASH_LOAD_STA 0x05 +#define FLASH_LOAD_STA_CHK BIT(7) + +#define XTAL_FRQ_SEL 0x3F +/* bit field positions */ +#define XTAL_FRQ_SEL_POS 5 +/* bit field values */ +#define XTAL_FRQ_19M2 (0 << XTAL_FRQ_SEL_POS) +#define XTAL_FRQ_27M (4 << XTAL_FRQ_SEL_POS) + +#define R_DSC_CTRL_0 0x40 +#define READ_STATUS_EN 7 +#define CLK_1MEG_RB 6 /* 1MHz clock reset; 0=reset, 0=reset release */ +#define DSC_BIST_DONE 1 /* Bit[5:1]: 1=DSC MBIST pass */ +#define DSC_EN 0x01 /* 1=DSC enabled, 0=DSC disabled */ + +#define OCM_FW_VERSION 0x31 +#define OCM_FW_REVERSION 0x32 + +#define AP_AUX_ADDR_7_0 0x11 +#define AP_AUX_ADDR_15_8 0x12 +#define AP_AUX_ADDR_19_16 0x13 + +/* Bit[0:3] AUX status, bit 4 op_en, bit 5 address only */ +#define AP_AUX_CTRL_STATUS 0x14 +#define AP_AUX_CTRL_OP_EN 0x10 +#define AP_AUX_CTRL_ADDRONLY 0x20 + +#define AP_AUX_BUFF_START 0x15 +#define PIXEL_CLOCK_L 0x25 +#define PIXEL_CLOCK_H 0x26 + +#define AP_AUX_COMMAND 0x27 /* com+len */ +/* Bit 0&1: 3D video structure */ +/* 0x01: frame packing, 0x02:Line alternative, 0x03:Side-by-side(full) */ +#define AP_AV_STATUS 0x28 +#define AP_VIDEO_CHG BIT(2) +#define AP_AUDIO_CHG BIT(3) +#define AP_MIPI_MUTE BIT(4) /* 1:MIPI input mute, 0: ummute */ +#define AP_MIPI_RX_EN BIT(5) /* 1: MIPI RX input in 0: no RX in */ +#define AP_DISABLE_PD BIT(6) +#define AP_DISABLE_DISPLAY BIT(7) +/***************************************************************/ +/* Register definition of device address 0x84 */ +#define MIPI_PHY_CONTROL_3 0x03 +#define MIPI_HS_PWD_CLK 7 +#define MIPI_HS_RT_CLK 6 +#define MIPI_PD_CLK 5 +#define MIPI_CLK_RT_MANUAL_PD_EN 4 +#define MIPI_CLK_HS_MANUAL_PD_EN 3 +#define MIPI_CLK_DET_DET_BYPASS 2 +#define MIPI_CLK_MISS_CTRL 1 +#define MIPI_PD_LPTX_CH_MANUAL_PD_EN 0 + +#define MIPI_LANE_CTRL_0 0x05 +#define MIPI_TIME_HS_PRPR 0x08 + +/* + * After MIPI RX protocol layer received video frames, + * Protocol layer starts to reconstruct video stream from PHY + */ +#define MIPI_VIDEO_STABLE_CNT 0x0A + +#define MIPI_LANE_CTRL_10 0x0F +#define MIPI_DIGITAL_ADJ_1 0x1B + +#define MIPI_PLL_M_NUM_23_16 0x1E +#define MIPI_PLL_M_NUM_15_8 0x1F +#define MIPI_PLL_M_NUM_7_0 0x20 +#define MIPI_PLL_N_NUM_23_16 0x21 +#define MIPI_PLL_N_NUM_15_8 0x22 +#define MIPI_PLL_N_NUM_7_0 0x23 + +#define MIPI_DIGITAL_PLL_6 0x2A +/* Bit[7:6]: VCO band control, only effective */ +#define MIPI_M_NUM_READY 0x10 +#define MIPI_N_NUM_READY 0x08 +#define STABLE_INTEGER_CNT_EN 0x04 +#define MIPI_PLL_TEST_BIT 0 +/* Bit[1:0]: test point output select - */ +/* 00: VCO power, 01: dvdd_pdt, 10: dvdd, 11: vcox */ + +#define MIPI_DIGITAL_PLL_7 0x2B +#define MIPI_PLL_FORCE_N_EN 7 +#define MIPI_PLL_FORCE_BAND_EN 6 + +#define MIPI_PLL_VCO_TUNE_REG 4 +/* Bit[5:4]: VCO metal capacitance - */ +/* 00: +20% fast, 01: +10% fast (default), 10: typical, 11: -10% slow */ +#define MIPI_PLL_VCO_TUNE_REG_VAL 0x30 + +#define MIPI_PLL_PLL_LDO_BIT 2 +/* Bit[3:2]: vco_v2i power - */ +/* 00: 1.40V, 01: 1.45V (default), 10: 1.50V, 11: 1.55V */ +#define MIPI_PLL_RESET_N 0x02 +#define MIPI_FRQ_FORCE_NDET 0 + +#define MIPI_ALERT_CLR_0 0x2D +#define HS_link_error_clear 7 +/* This bit itself is S/C, and it clears 0x84:0x31[7] */ + +#define MIPI_ALERT_OUT_0 0x31 +#define check_sum_err_hs_sync 7 +/* This bit is cleared by 0x84:0x2D[7] */ + +#define MIPI_DIGITAL_PLL_8 0x33 +#define MIPI_POST_DIV_VAL 4 +/* N means divided by (n+1), n = 0~15 */ +#define MIPI_EN_LOCK_FRZ 3 +#define MIPI_FRQ_COUNTER_RST 2 +#define MIPI_FRQ_SET_REG_8 1 +/* Bit 0 is reserved */ + +#define MIPI_DIGITAL_PLL_9 0x34 + +#define MIPI_DIGITAL_PLL_16 0x3B +#define MIPI_FRQ_FREEZE_NDET 7 +#define MIPI_FRQ_REG_SET_ENABLE 6 +#define MIPI_REG_FORCE_SEL_EN 5 +#define MIPI_REG_SEL_DIV_REG 4 +#define MIPI_REG_FORCE_PRE_DIV_EN 3 +/* Bit 2 is reserved */ +#define MIPI_FREF_D_IND 1 +#define REF_CLK_27000KHZ 1 +#define REF_CLK_19200KHZ 0 +#define MIPI_REG_PLL_PLL_TEST_ENABLE 0 + +#define MIPI_DIGITAL_PLL_18 0x3D +#define FRQ_COUNT_RB_SEL 7 +#define REG_FORCE_POST_DIV_EN 6 +#define MIPI_DPI_SELECT 5 +#define SELECT_DSI 1 +#define SELECT_DPI 0 +#define REG_BAUD_DIV_RATIO 0 + +#define H_BLANK_L 0x3E +/* For DSC only */ +#define H_BLANK_H 0x3F +/* For DSC only; note: bit[7:6] are reserved */ +#define MIPI_SWAP 0x4A +#define MIPI_SWAP_CH0 7 +#define MIPI_SWAP_CH1 6 +#define MIPI_SWAP_CH2 5 +#define MIPI_SWAP_CH3 4 +#define MIPI_SWAP_CLK 3 +/* Bit[2:0] are reserved */ + +/******** END of I2C Address 0x84 *********/ + +/* DPCD regs */ +#define DPCD_DPCD_REV 0x00 +#define DPCD_MAX_LINK_RATE 0x01 +#define DPCD_MAX_LANE_COUNT 0x02 + +/********* ANX7625 Register End **********/ + +/***************** Display *****************/ +enum audio_fs { + AUDIO_FS_441K = 0x00, + AUDIO_FS_48K = 0x02, + AUDIO_FS_32K = 0x03, + AUDIO_FS_882K = 0x08, + AUDIO_FS_96K = 0x0a, + AUDIO_FS_1764K = 0x0c, + AUDIO_FS_192K = 0x0e +}; + +enum audio_wd_len { + AUDIO_W_LEN_16_20MAX = 0x02, + AUDIO_W_LEN_18_20MAX = 0x04, + AUDIO_W_LEN_17_20MAX = 0x0c, + AUDIO_W_LEN_19_20MAX = 0x08, + AUDIO_W_LEN_20_20MAX = 0x0a, + AUDIO_W_LEN_20_24MAX = 0x03, + AUDIO_W_LEN_22_24MAX = 0x05, + AUDIO_W_LEN_21_24MAX = 0x0d, + AUDIO_W_LEN_23_24MAX = 0x09, + AUDIO_W_LEN_24_24MAX = 0x0b +}; + +#define I2S_CH_2 0x01 +#define TDM_CH_4 0x03 +#define TDM_CH_6 0x05 +#define TDM_CH_8 0x07 + +#define MAX_DPCD_BUFFER_SIZE 16 + +#define ONE_BLOCK_SIZE 128 +#define FOUR_BLOCK_SIZE (128 * 4) + +#define MAX_EDID_BLOCK 3 +#define EDID_TRY_CNT 3 +#define SUPPORT_PIXEL_CLOCK 300000 + +struct s_edid_data { + int edid_block_num; + u8 edid_raw_data[FOUR_BLOCK_SIZE]; +}; + +/***************** Display End *****************/ + +struct anx7625_device_node { + struct device_node *mipi_dsi_host_node; + struct device_node *panel_node; +}; + +struct anx7625_platform_data { + struct gpio_desc *gpio_p_on; + struct gpio_desc *gpio_reset; + struct drm_panel *panel; + int intp_irq; + u32 low_power_mode; + struct anx7625_device_node node; +}; + +struct anx7625_i2c_client { + struct i2c_client *tx_p0_client; + struct i2c_client *tx_p1_client; + struct i2c_client *tx_p2_client; + struct i2c_client *rx_p0_client; + struct i2c_client *rx_p1_client; + struct i2c_client *rx_p2_client; + struct i2c_client *tcpc_client; +}; + +struct anx7625_data { + struct anx7625_platform_data pdata; + atomic_t power_status; + atomic_t panel_power; + int hpd_status; + int hpd_high_cnt; + /* Lock for work queue */ + struct mutex lock; + struct i2c_client *client; + struct anx7625_i2c_client i2c; + struct i2c_client *last_client; + struct s_edid_data slimport_edid_p; + struct work_struct work; + struct workqueue_struct *workqueue; + char edid_block; + struct display_timing dt; + u8 display_timing_valid; + struct drm_bridge bridge; + u8 bridge_attached; + struct drm_connector connector; + struct mipi_dsi_device *dsi; +}; + +#endif /* __ANX7625_H__ */
The ANX7625 is an ultra-low power 4K Mobile HD Transmitter designed for portable device. It converts MIPI DSI/DPI to DisplayPort 1.3 4K. Signed-off-by: Xin Ji <xji@analogixsemi.com> --- drivers/gpu/drm/bridge/analogix/Kconfig | 9 + drivers/gpu/drm/bridge/analogix/Makefile | 1 + drivers/gpu/drm/bridge/analogix/anx7625.c | 1961 +++++++++++++++++++++++++++++ drivers/gpu/drm/bridge/analogix/anx7625.h | 397 ++++++ 4 files changed, 2368 insertions(+) create mode 100644 drivers/gpu/drm/bridge/analogix/anx7625.c create mode 100644 drivers/gpu/drm/bridge/analogix/anx7625.h