| Message ID | 20230927-topic-fp5_disp-v2-2-7b5e1d1662a6@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Raydium RM692E5-based BOE panel driver | expand |
On 29/09/2023 14:54, Konrad Dybcio wrote: > Add support for the 2700x1224 AMOLED BOE panel bundled with a RM692E5 > driver IC, as found on the Fairphone 5 smartphone. > > Co-developed-by: Luca Weiss <luca.weiss@fairphone.com> > Signed-off-by: Luca Weiss <luca.weiss@fairphone.com> > Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> > --- > drivers/gpu/drm/panel/Kconfig | 9 + > drivers/gpu/drm/panel/Makefile | 1 + > drivers/gpu/drm/panel/panel-raydium-rm692e5.c | 423 ++++++++++++++++++++++++++ > 3 files changed, 433 insertions(+) > > diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig > index 2d6d96ee3547..ecb22ea326cb 100644 > --- a/drivers/gpu/drm/panel/Kconfig > +++ b/drivers/gpu/drm/panel/Kconfig > @@ -516,6 +516,15 @@ config DRM_PANEL_RAYDIUM_RM68200 > Say Y here if you want to enable support for Raydium RM68200 > 720x1280 DSI video mode panel. > > +config DRM_PANEL_RAYDIUM_RM692E5 > + tristate "Raydium RM692E5-based DSI panel" > + depends on OF > + depends on DRM_MIPI_DSI > + depends on BACKLIGHT_CLASS_DEVICE > + help > + Say Y here if you want to enable support for Raydium RM692E5-based > + display panels, such as the one found in the Fairphone 5 smartphone. > + > config DRM_PANEL_RONBO_RB070D30 > tristate "Ronbo Electronics RB070D30 panel" > depends on OF > diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile > index 157c77ff157f..e14ce55a0875 100644 > --- a/drivers/gpu/drm/panel/Makefile > +++ b/drivers/gpu/drm/panel/Makefile > @@ -49,6 +49,7 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o > obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o > obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o > obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o > +obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o > obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o > obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o > obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o > diff --git a/drivers/gpu/drm/panel/panel-raydium-rm692e5.c b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c > new file mode 100644 > index 000000000000..a613ba5b816c > --- /dev/null > +++ b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c > @@ -0,0 +1,423 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree. > + * Copyright (c) 2023 Linaro Limited > + */ > + > +#include <linux/backlight.h> > +#include <linux/delay.h> > +#include <linux/gpio/consumer.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/regulator/consumer.h> > + > +#include <drm/display/drm_dsc.h> > +#include <drm/display/drm_dsc_helper.h> > +#include <drm/drm_mipi_dsi.h> > +#include <drm/drm_modes.h> > +#include <drm/drm_panel.h> > + > +struct rm692e5_panel { > + struct drm_panel panel; > + struct mipi_dsi_device *dsi; > + struct drm_dsc_config dsc; > + struct regulator_bulk_data supplies[3]; > + struct gpio_desc *reset_gpio; > + bool prepared; > +}; > + > +static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel) > +{ > + return container_of(panel, struct rm692e5_panel, panel); > +} > + > +static void rm692e5_reset(struct rm692e5_panel *ctx) > +{ > + gpiod_set_value_cansleep(ctx->reset_gpio, 0); > + usleep_range(10000, 11000); > + gpiod_set_value_cansleep(ctx->reset_gpio, 1); > + usleep_range(5000, 6000); > + gpiod_set_value_cansleep(ctx->reset_gpio, 0); > + usleep_range(10000, 11000); > +} > + > +static int rm692e5_on(struct rm692e5_panel *ctx) > +{ > + struct mipi_dsi_device *dsi = ctx->dsi; > + struct device *dev = &dsi->dev; > + int ret; > + > + dsi->mode_flags |= MIPI_DSI_MODE_LPM; > + > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41); > + mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16); > + mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71); > + mipi_dsi_generic_write_seq(dsi, 0x82, 0x01); > + mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c); > + mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64); > + mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c); > + mipi_dsi_generic_write_seq(dsi, 0xca, 0x80); > + mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02); > + mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); > + mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); > + mipi_dsi_generic_write_seq(dsi, 0x00, 0xff); > + mipi_dsi_generic_write_seq(dsi, 0x01, 0xff); > + mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf); > + mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc); > + mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9); > + mipi_dsi_generic_write_seq(dsi, 0x05, 0x99); > + mipi_dsi_generic_write_seq(dsi, 0x06, 0x02); > + mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a); > + mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0); > + mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c); > + mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb); > + mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8); > + mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32); > + mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); > + mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0); > + mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff); > + mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff); > + mipi_dsi_generic_write_seq(dsi, 0x10, 0x33); > + mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f); > + mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e); > + mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6); > + mipi_dsi_generic_write_seq(dsi, 0x14, 0x80); > + mipi_dsi_generic_write_seq(dsi, 0x15, 0x02); > + mipi_dsi_generic_write_seq(dsi, 0x16, 0x38); > + mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3); > + mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a); > + mipi_dsi_generic_write_seq(dsi, 0x19, 0xba); > + mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc); > + mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01); > + > + ret = mipi_dsi_dcs_nop(dsi); > + if (ret < 0) { > + dev_err(dev, "Failed to nop: %d\n", ret); > + return ret; > + } > + msleep(32); > + > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); > + mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1); > + mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9); > + mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf); > + mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37); > + mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b); > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01); > + mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08); > + mipi_dsi_generic_write_seq(dsi, 0x35, 0x00); > + mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42); > + > + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); > + if (ret < 0) { > + dev_err(dev, "Failed to exit sleep mode: %d\n", ret); > + return ret; > + } > + msleep(100); > + > + ret = mipi_dsi_dcs_set_display_on(dsi); > + if (ret < 0) { > + dev_err(dev, "Failed to set display on: %d\n", ret); > + return ret; > + } > + > + return 0; > +} > + > +static int rm692e5_disable(struct drm_panel *panel) > +{ > + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); > + struct mipi_dsi_device *dsi = ctx->dsi; > + struct device *dev = &dsi->dev; > + int ret; > + > + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; > + > + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); > + > + ret = mipi_dsi_dcs_set_display_off(dsi); > + if (ret < 0) { > + dev_err(dev, "Failed to set display off: %d\n", ret); > + return ret; > + } > + > + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); > + if (ret < 0) { > + dev_err(dev, "Failed to enter sleep mode: %d\n", ret); > + return ret; > + } > + msleep(100); > + > + return 0; > +} > + > +static int rm692e5_prepare(struct drm_panel *panel) > +{ > + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); > + struct drm_dsc_picture_parameter_set pps; > + struct device *dev = &ctx->dsi->dev; > + int ret; > + > + if (ctx->prepared) > + return 0; > + > + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > + if (ret < 0) { > + dev_err(dev, "Failed to enable regulators: %d\n", ret); > + return ret; > + } > + > + rm692e5_reset(ctx); > + > + ret = rm692e5_on(ctx); > + if (ret < 0) { > + dev_err(dev, "Failed to initialize panel: %d\n", ret); > + gpiod_set_value_cansleep(ctx->reset_gpio, 1); > + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > + return ret; > + } > + > + drm_dsc_pps_payload_pack(&pps, &ctx->dsc); > + > + ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps); > + if (ret < 0) { > + dev_err(panel->dev, "failed to transmit PPS: %d\n", ret); > + return ret; > + } > + > + ret = mipi_dsi_compression_mode(ctx->dsi, true); > + if (ret < 0) { > + dev_err(dev, "failed to enable compression mode: %d\n", ret); > + return ret; > + } > + > + msleep(28); > + > + mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40); > + > + /* 0x05 -> 90Hz, 0x00 -> 60Hz */ > + mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05); > + > + mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00); > + > + ctx->prepared = true; > + > + return 0; > +} > + > +static int rm692e5_unprepare(struct drm_panel *panel) > +{ > + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); > + > + if (!ctx->prepared) > + return 0; > + > + gpiod_set_value_cansleep(ctx->reset_gpio, 1); > + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > + > + ctx->prepared = false; > + return 0; > +} > + > +static const struct drm_display_mode rm692e5_mode = { > + .clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000, > + .hdisplay = 1224, > + .hsync_start = 1224 + 32, > + .hsync_end = 1224 + 32 + 8, > + .htotal = 1224 + 32 + 8 + 8, > + .vdisplay = 2700, > + .vsync_start = 2700 + 8, > + .vsync_end = 2700 + 8 + 2, > + .vtotal = 2700 + 8 + 2 + 8, > + .width_mm = 68, > + .height_mm = 150, > +}; > + > +static int rm692e5_get_modes(struct drm_panel *panel, > + struct drm_connector *connector) > +{ > + struct drm_display_mode *mode; > + > + mode = drm_mode_duplicate(connector->dev, &rm692e5_mode); > + if (!mode) > + return -ENOMEM; > + > + drm_mode_set_name(mode); > + > + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; > + connector->display_info.width_mm = mode->width_mm; > + connector->display_info.height_mm = mode->height_mm; > + drm_mode_probed_add(connector, mode); > + > + return 1; > +} > + > +static const struct drm_panel_funcs rm692e5_panel_funcs = { > + .prepare = rm692e5_prepare, > + .unprepare = rm692e5_unprepare, > + .disable = rm692e5_disable, > + .get_modes = rm692e5_get_modes, > +}; > + > +static int rm692e5_bl_update_status(struct backlight_device *bl) > +{ > + struct mipi_dsi_device *dsi = bl_get_data(bl); > + u16 brightness = backlight_get_brightness(bl); > + int ret; > + > + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; > + > + ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); > + if (ret < 0) > + return ret; > + > + dsi->mode_flags |= MIPI_DSI_MODE_LPM; > + > + return 0; > +} > + > +static int rm692e5_bl_get_brightness(struct backlight_device *bl) > +{ > + struct mipi_dsi_device *dsi = bl_get_data(bl); > + u16 brightness; > + int ret; > + > + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; > + > + ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness); > + if (ret < 0) > + return ret; > + > + dsi->mode_flags |= MIPI_DSI_MODE_LPM; > + > + return brightness; > +} > + > +static const struct backlight_ops rm692e5_bl_ops = { > + .update_status = rm692e5_bl_update_status, > + .get_brightness = rm692e5_bl_get_brightness, > +}; > + > +static struct backlight_device * > +rm692e5_create_backlight(struct mipi_dsi_device *dsi) > +{ > + struct device *dev = &dsi->dev; > + const struct backlight_properties props = { > + .type = BACKLIGHT_RAW, > + .brightness = 4095, > + .max_brightness = 4095, > + }; > + > + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, > + &rm692e5_bl_ops, &props); > +} > + > +static int rm692e5_probe(struct mipi_dsi_device *dsi) > +{ > + struct device *dev = &dsi->dev; > + struct rm692e5_panel *ctx; > + int ret; > + > + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); > + if (!ctx) > + return -ENOMEM; > + > + ctx->supplies[0].supply = "vddio"; > + ctx->supplies[1].supply = "dvdd"; > + ctx->supplies[2].supply = "vci"; > + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), > + ctx->supplies); > + if (ret < 0) > + return dev_err_probe(dev, ret, "Failed to get regulators\n"); > + > + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); > + if (IS_ERR(ctx->reset_gpio)) > + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), > + "Failed to get reset-gpios\n"); > + > + ctx->dsi = dsi; > + mipi_dsi_set_drvdata(dsi, ctx); > + > + dsi->lanes = 4; > + dsi->format = MIPI_DSI_FMT_RGB888; > + dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET | > + MIPI_DSI_CLOCK_NON_CONTINUOUS; > + > + drm_panel_init(&ctx->panel, dev, &rm692e5_panel_funcs, > + DRM_MODE_CONNECTOR_DSI); > + ctx->panel.prepare_prev_first = true; > + > + ctx->panel.backlight = rm692e5_create_backlight(dsi); > + if (IS_ERR(ctx->panel.backlight)) > + return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), > + "Failed to create backlight\n"); > + > + drm_panel_add(&ctx->panel); > + > + /* This panel only supports DSC; unconditionally enable it */ > + dsi->dsc = &ctx->dsc; > + > + /* TODO: Pass slice_per_pkt = 2 */ > + ctx->dsc.dsc_version_major = 1; > + ctx->dsc.dsc_version_minor = 1; > + ctx->dsc.slice_height = 60; > + ctx->dsc.slice_width = 1224; > + > + ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width; > + ctx->dsc.bits_per_component = 8; > + ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */ > + ctx->dsc.block_pred_enable = true; > + > + ret = mipi_dsi_attach(dsi); > + if (ret < 0) { > + dev_err(dev, "Failed to attach to DSI host: %d\n", ret); > + drm_panel_remove(&ctx->panel); > + return ret; > + } > + > + return 0; > +} > + > +static void rm692e5_remove(struct mipi_dsi_device *dsi) > +{ > + struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi); > + int ret; > + > + ret = mipi_dsi_detach(dsi); > + if (ret < 0) > + dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); > + > + drm_panel_remove(&ctx->panel); > +} > + > +static const struct of_device_id rm692e5_of_match[] = { > + { .compatible = "fairphone,fp5-rm692e5-boe" }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, rm692e5_of_match); > + > +static struct mipi_dsi_driver rm692e5_driver = { > + .probe = rm692e5_probe, > + .remove = rm692e5_remove, > + .driver = { > + .name = "panel-rm692e5-boe-amoled", > + .of_match_table = rm692e5_of_match, > + }, > +}; > +module_mipi_dsi_driver(rm692e5_driver); > + > +MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels"); > +MODULE_LICENSE("GPL"); > Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 2d6d96ee3547..ecb22ea326cb 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -516,6 +516,15 @@ config DRM_PANEL_RAYDIUM_RM68200 Say Y here if you want to enable support for Raydium RM68200 720x1280 DSI video mode panel. +config DRM_PANEL_RAYDIUM_RM692E5 + tristate "Raydium RM692E5-based DSI panel" + depends on OF + depends on DRM_MIPI_DSI + depends on BACKLIGHT_CLASS_DEVICE + help + Say Y here if you want to enable support for Raydium RM692E5-based + display panels, such as the one found in the Fairphone 5 smartphone. + config DRM_PANEL_RONBO_RB070D30 tristate "Ronbo Electronics RB070D30 panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 157c77ff157f..e14ce55a0875 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00) += panel-panasonic-vvx10f034n00.o obj-$(CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN) += panel-raspberrypi-touchscreen.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM67191) += panel-raydium-rm67191.o obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM68200) += panel-raydium-rm68200.o +obj-$(CONFIG_DRM_PANEL_RAYDIUM_RM692E5) += panel-raydium-rm692e5.o obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o diff --git a/drivers/gpu/drm/panel/panel-raydium-rm692e5.c b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c new file mode 100644 index 000000000000..a613ba5b816c --- /dev/null +++ b/drivers/gpu/drm/panel/panel-raydium-rm692e5.c @@ -0,0 +1,423 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree. + * Copyright (c) 2023 Linaro Limited + */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/regulator/consumer.h> + +#include <drm/display/drm_dsc.h> +#include <drm/display/drm_dsc_helper.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +struct rm692e5_panel { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct drm_dsc_config dsc; + struct regulator_bulk_data supplies[3]; + struct gpio_desc *reset_gpio; + bool prepared; +}; + +static inline struct rm692e5_panel *to_rm692e5_panel(struct drm_panel *panel) +{ + return container_of(panel, struct rm692e5_panel, panel); +} + +static void rm692e5_reset(struct rm692e5_panel *ctx) +{ + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(5000, 6000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); +} + +static int rm692e5_on(struct rm692e5_panel *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x41); + mipi_dsi_generic_write_seq(dsi, 0xd6, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x16); + mipi_dsi_generic_write_seq(dsi, 0x8a, 0x87); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x71); + mipi_dsi_generic_write_seq(dsi, 0x82, 0x01); + mipi_dsi_generic_write_seq(dsi, 0xc6, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xc7, 0x2c); + mipi_dsi_generic_write_seq(dsi, 0xc8, 0x64); + mipi_dsi_generic_write_seq(dsi, 0xc9, 0x3c); + mipi_dsi_generic_write_seq(dsi, 0xca, 0x80); + mipi_dsi_generic_write_seq(dsi, 0xcb, 0x02); + mipi_dsi_generic_write_seq(dsi, 0xcc, 0x02); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); + mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); + mipi_dsi_generic_write_seq(dsi, 0x00, 0xff); + mipi_dsi_generic_write_seq(dsi, 0x01, 0xff); + mipi_dsi_generic_write_seq(dsi, 0x02, 0xcf); + mipi_dsi_generic_write_seq(dsi, 0x03, 0xbc); + mipi_dsi_generic_write_seq(dsi, 0x04, 0xb9); + mipi_dsi_generic_write_seq(dsi, 0x05, 0x99); + mipi_dsi_generic_write_seq(dsi, 0x06, 0x02); + mipi_dsi_generic_write_seq(dsi, 0x07, 0x0a); + mipi_dsi_generic_write_seq(dsi, 0x08, 0xe0); + mipi_dsi_generic_write_seq(dsi, 0x09, 0x4c); + mipi_dsi_generic_write_seq(dsi, 0x0a, 0xeb); + mipi_dsi_generic_write_seq(dsi, 0x0b, 0xe8); + mipi_dsi_generic_write_seq(dsi, 0x0c, 0x32); + mipi_dsi_generic_write_seq(dsi, 0x0d, 0x07); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf4); + mipi_dsi_generic_write_seq(dsi, 0x0d, 0xc0); + mipi_dsi_generic_write_seq(dsi, 0x0e, 0xff); + mipi_dsi_generic_write_seq(dsi, 0x0f, 0xff); + mipi_dsi_generic_write_seq(dsi, 0x10, 0x33); + mipi_dsi_generic_write_seq(dsi, 0x11, 0x6f); + mipi_dsi_generic_write_seq(dsi, 0x12, 0x6e); + mipi_dsi_generic_write_seq(dsi, 0x13, 0xa6); + mipi_dsi_generic_write_seq(dsi, 0x14, 0x80); + mipi_dsi_generic_write_seq(dsi, 0x15, 0x02); + mipi_dsi_generic_write_seq(dsi, 0x16, 0x38); + mipi_dsi_generic_write_seq(dsi, 0x17, 0xd3); + mipi_dsi_generic_write_seq(dsi, 0x18, 0x3a); + mipi_dsi_generic_write_seq(dsi, 0x19, 0xba); + mipi_dsi_generic_write_seq(dsi, 0x1a, 0xcc); + mipi_dsi_generic_write_seq(dsi, 0x1b, 0x01); + + ret = mipi_dsi_dcs_nop(dsi); + if (ret < 0) { + dev_err(dev, "Failed to nop: %d\n", ret); + return ret; + } + msleep(32); + + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x38); + mipi_dsi_generic_write_seq(dsi, 0x18, 0x13); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xd1); + mipi_dsi_generic_write_seq(dsi, 0xd3, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xd0, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xd2, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xd4, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xb4, 0x01); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0xf9); + mipi_dsi_generic_write_seq(dsi, 0x00, 0xaf); + mipi_dsi_generic_write_seq(dsi, 0x1d, 0x37); + mipi_dsi_generic_write_seq(dsi, 0x44, 0x0a, 0x7b); + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); + mipi_dsi_generic_write_seq(dsi, 0xfa, 0x01); + mipi_dsi_generic_write_seq(dsi, 0xc2, 0x08); + mipi_dsi_generic_write_seq(dsi, 0x35, 0x00); + mipi_dsi_generic_write_seq(dsi, 0x51, 0x05, 0x42); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to exit sleep mode: %d\n", ret); + return ret; + } + msleep(100); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display on: %d\n", ret); + return ret; + } + + return 0; +} + +static int rm692e5_disable(struct drm_panel *panel) +{ + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + mipi_dsi_generic_write_seq(dsi, 0xfe, 0x00); + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display off: %d\n", ret); + return ret; + } + + ret = mipi_dsi_dcs_enter_sleep_mode(dsi); + if (ret < 0) { + dev_err(dev, "Failed to enter sleep mode: %d\n", ret); + return ret; + } + msleep(100); + + return 0; +} + +static int rm692e5_prepare(struct drm_panel *panel) +{ + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); + struct drm_dsc_picture_parameter_set pps; + struct device *dev = &ctx->dsi->dev; + int ret; + + if (ctx->prepared) + return 0; + + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators: %d\n", ret); + return ret; + } + + rm692e5_reset(ctx); + + ret = rm692e5_on(ctx); + if (ret < 0) { + dev_err(dev, "Failed to initialize panel: %d\n", ret); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + return ret; + } + + drm_dsc_pps_payload_pack(&pps, &ctx->dsc); + + ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps); + if (ret < 0) { + dev_err(panel->dev, "failed to transmit PPS: %d\n", ret); + return ret; + } + + ret = mipi_dsi_compression_mode(ctx->dsi, true); + if (ret < 0) { + dev_err(dev, "failed to enable compression mode: %d\n", ret); + return ret; + } + + msleep(28); + + mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x40); + + /* 0x05 -> 90Hz, 0x00 -> 60Hz */ + mipi_dsi_generic_write_seq(ctx->dsi, 0xbd, 0x05); + + mipi_dsi_generic_write_seq(ctx->dsi, 0xfe, 0x00); + + ctx->prepared = true; + + return 0; +} + +static int rm692e5_unprepare(struct drm_panel *panel) +{ + struct rm692e5_panel *ctx = to_rm692e5_panel(panel); + + if (!ctx->prepared) + return 0; + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + + ctx->prepared = false; + return 0; +} + +static const struct drm_display_mode rm692e5_mode = { + .clock = (1224 + 32 + 8 + 8) * (2700 + 8 + 2 + 8) * 90 / 1000, + .hdisplay = 1224, + .hsync_start = 1224 + 32, + .hsync_end = 1224 + 32 + 8, + .htotal = 1224 + 32 + 8 + 8, + .vdisplay = 2700, + .vsync_start = 2700 + 8, + .vsync_end = 2700 + 8 + 2, + .vtotal = 2700 + 8 + 2 + 8, + .width_mm = 68, + .height_mm = 150, +}; + +static int rm692e5_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &rm692e5_mode); + if (!mode) + return -ENOMEM; + + drm_mode_set_name(mode); + + mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; + connector->display_info.width_mm = mode->width_mm; + connector->display_info.height_mm = mode->height_mm; + drm_mode_probed_add(connector, mode); + + return 1; +} + +static const struct drm_panel_funcs rm692e5_panel_funcs = { + .prepare = rm692e5_prepare, + .unprepare = rm692e5_unprepare, + .disable = rm692e5_disable, + .get_modes = rm692e5_get_modes, +}; + +static int rm692e5_bl_update_status(struct backlight_device *bl) +{ + struct mipi_dsi_device *dsi = bl_get_data(bl); + u16 brightness = backlight_get_brightness(bl); + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness); + if (ret < 0) + return ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + return 0; +} + +static int rm692e5_bl_get_brightness(struct backlight_device *bl) +{ + struct mipi_dsi_device *dsi = bl_get_data(bl); + u16 brightness; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_get_display_brightness_large(dsi, &brightness); + if (ret < 0) + return ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + return brightness; +} + +static const struct backlight_ops rm692e5_bl_ops = { + .update_status = rm692e5_bl_update_status, + .get_brightness = rm692e5_bl_get_brightness, +}; + +static struct backlight_device * +rm692e5_create_backlight(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + const struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 4095, + .max_brightness = 4095, + }; + + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, + &rm692e5_bl_ops, &props); +} + +static int rm692e5_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct rm692e5_panel *ctx; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->supplies[0].supply = "vddio"; + ctx->supplies[1].supply = "dvdd"; + ctx->supplies[2].supply = "vci"; + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret < 0) + return dev_err_probe(dev, ret, "Failed to get regulators\n"); + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(ctx->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), + "Failed to get reset-gpios\n"); + + ctx->dsi = dsi; + mipi_dsi_set_drvdata(dsi, ctx); + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET | + MIPI_DSI_CLOCK_NON_CONTINUOUS; + + drm_panel_init(&ctx->panel, dev, &rm692e5_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + ctx->panel.prepare_prev_first = true; + + ctx->panel.backlight = rm692e5_create_backlight(dsi); + if (IS_ERR(ctx->panel.backlight)) + return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight), + "Failed to create backlight\n"); + + drm_panel_add(&ctx->panel); + + /* This panel only supports DSC; unconditionally enable it */ + dsi->dsc = &ctx->dsc; + + /* TODO: Pass slice_per_pkt = 2 */ + ctx->dsc.dsc_version_major = 1; + ctx->dsc.dsc_version_minor = 1; + ctx->dsc.slice_height = 60; + ctx->dsc.slice_width = 1224; + + ctx->dsc.slice_count = 1224 / ctx->dsc.slice_width; + ctx->dsc.bits_per_component = 8; + ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */ + ctx->dsc.block_pred_enable = true; + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + dev_err(dev, "Failed to attach to DSI host: %d\n", ret); + drm_panel_remove(&ctx->panel); + return ret; + } + + return 0; +} + +static void rm692e5_remove(struct mipi_dsi_device *dsi) +{ + struct rm692e5_panel *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret); + + drm_panel_remove(&ctx->panel); +} + +static const struct of_device_id rm692e5_of_match[] = { + { .compatible = "fairphone,fp5-rm692e5-boe" }, + { } +}; +MODULE_DEVICE_TABLE(of, rm692e5_of_match); + +static struct mipi_dsi_driver rm692e5_driver = { + .probe = rm692e5_probe, + .remove = rm692e5_remove, + .driver = { + .name = "panel-rm692e5-boe-amoled", + .of_match_table = rm692e5_of_match, + }, +}; +module_mipi_dsi_driver(rm692e5_driver); + +MODULE_DESCRIPTION("DRM driver for rm692e5-equipped DSI panels"); +MODULE_LICENSE("GPL");