| Message ID | 20200311163329.221840-4-icenowy@aosc.io (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add support for PinePhone LCD panel | expand |
Hi Icenowy A few details in the following. Sam On Thu, Mar 12, 2020 at 12:33:27AM +0800, Icenowy Zheng wrote: > Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI IPS LCD panel made by > Xingbangda, which is used on PinePhone final assembled phones. > > Add support for it. > > Signed-off-by: Icenowy Zheng <icenowy@aosc.io> > --- > drivers/gpu/drm/panel/Kconfig | 9 + > drivers/gpu/drm/panel/Makefile | 1 + > .../gpu/drm/panel/panel-xingbangda-xbd599.c | 367 ++++++++++++++++++ > 3 files changed, 377 insertions(+) > create mode 100644 drivers/gpu/drm/panel/panel-xingbangda-xbd599.c > > +++ b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c > @@ -0,0 +1,367 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Xingbangda XBD599 MIPI-DSI panel driver > + * > + * Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io> 2020? > + * > + * Based on panel-rocktech-jh057n00900.c, which is: > + * Copyright (C) Purism SPC 2019 > + */ > + > +#include <linux/gpio/consumer.h> > +#include <linux/delay.h> > +#include <linux/mod_devicetable.h> > +#include <linux/module.h> > +#include <linux/of_device.h> > +#include <linux/regulator/consumer.h> Sort alphabetically. > + > +#include <drm/drm_mipi_dsi.h> > +#include <drm/drm_modes.h> > +#include <drm/drm_panel.h> > +#include <drm/drm_print.h> > + > +#define DRV_NAME "panel-xingbangda-xbd599" No reason for this indirection, it is only used once > + > +/* Manufacturer specific Commands send via DSI */ > +#define ST7703_CMD_ALL_PIXEL_OFF 0x22 > +#define ST7703_CMD_ALL_PIXEL_ON 0x23 > +#define ST7703_CMD_SETDISP 0xB2 > +#define ST7703_CMD_SETRGBIF 0xB3 > +#define ST7703_CMD_SETCYC 0xB4 > +#define ST7703_CMD_SETBGP 0xB5 > +#define ST7703_CMD_SETVCOM 0xB6 > +#define ST7703_CMD_SETOTP 0xB7 > +#define ST7703_CMD_SETPOWER_EXT 0xB8 > +#define ST7703_CMD_SETEXTC 0xB9 > +#define ST7703_CMD_SETMIPI 0xBA > +#define ST7703_CMD_SETVDC 0xBC > +#define ST7703_CMD_SETSCR 0xC0 > +#define ST7703_CMD_SETPOWER 0xC1 > +#define ST7703_CMD_UNK_C6 0xC6 > +#define ST7703_CMD_SETPANEL 0xCC > +#define ST7703_CMD_SETGAMMA 0xE0 > +#define ST7703_CMD_SETEQ 0xE3 > +#define ST7703_CMD_SETGIP1 0xE9 > +#define ST7703_CMD_SETGIP2 0xEA > + > +static const char * const regulator_names[] = { > + "iovcc", > + "vcc", > +}; > + > +struct xbd599 { > + struct device *dev; > + struct drm_panel panel; > + struct gpio_desc *reset_gpio; > + struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)]; > + bool prepared; > +}; > + > +static inline struct xbd599 *panel_to_xbd599(struct drm_panel *panel) > +{ > + return container_of(panel, struct xbd599, panel); > +} > + > +#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \ > + static const u8 d[] = { seq }; \ > + int ret; \ > + ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \ > + if (ret < 0) \ > + return ret; \ > + } while (0) > + > +static int xbd599_init_sequence(struct xbd599 *ctx) > +{ > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + struct device *dev = ctx->dev; > + int ret; > + > + /* > + * Init sequence was supplied by the panel vendor. > + */ > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, > + 0xF1, 0x12, 0x83); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI, > + 0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00, > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25, > + 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4F, 0x11, > + 0x00, 0x00, 0x37); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, > + 0x25, 0x22, 0x20, 0x03); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, > + 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00, > + 0x00, 0x00); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, > + 0x73, 0x73, 0x50, 0x50, 0x00, 0xC0, 0x08, 0x70, > + 0x00); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0xF0); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, > + 0x00, 0x00, 0x0B, 0x0B, 0x10, 0x10, 0x00, 0x00, > + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); > + dsi_dcs_write_seq(dsi, 0xC6, 0x01, 0x00, 0xFF, 0xFF, 0x00); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, > + 0x74, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xFF, 0xFF, > + 0xCC, 0xCC, 0x77, 0x77); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x07, 0x07); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x2C, 0x2C); > + dsi_dcs_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00); > + > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1, > + 0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12, > + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, > + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, > + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, > + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, > + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, > + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2, > + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, > + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, > + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, > + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, > + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, > + 0x00, 0x00, 0x00 ,0x00, 0x00, 0x00, 0x03, 0x0A, > + 0xA5, 0x00, 0x00, 0x00, 0x00); > + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA, > + 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35, > + 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12, > + 0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, > + 0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, > + 0x12, 0x18); > + msleep(20); > + > + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); > + if (ret < 0) { > + DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n"); > + return ret; > + } > + msleep(250); > + > + ret = mipi_dsi_dcs_set_display_on(dsi); > + if (ret) > + return ret; > + msleep(50); > + > + DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n"); > + return 0; > +} > + > +static int xbd599_disable(struct drm_panel *panel) > +{ > + struct xbd599 *ctx = panel_to_xbd599(panel); > + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); > + > + return mipi_dsi_dcs_set_display_off(dsi); > +} The following is the same for many panels but anyway. The init order for a display is prepare enable # Display is now fully operational disable unprepare # display is now off and turned off (no power) So when reading panel drivers my personal preference is to read the functions in that order - this makes it easier to follow the sequence. Thats just my personal opinion - so feel free to ignore. > + > +static int xbd599_unprepare(struct drm_panel *panel) > +{ > + struct xbd599 *ctx = panel_to_xbd599(panel); > + > + if (!ctx->prepared) > + return 0; > + > + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > + ctx->prepared = false; > + > + return 0; > +} Maybe activate reset before power is turned off. So when power is turned on again later the panel is kept in reset. This would also make this a closer mirror of what is done in prepare() > + > +static int xbd599_enable(struct drm_panel *panel) > +{ > + struct xbd599 *ctx = panel_to_xbd599(panel); > + int ret; > + > + ret = xbd599_init_sequence(ctx); > + if (ret < 0) { > + DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n", > + ret); > + return ret; > + } > + > + return 0; > +} > + > +static int xbd599_prepare(struct drm_panel *panel) > +{ > + struct xbd599 *ctx = panel_to_xbd599(panel); > + int ret; > + > + if (ctx->prepared) > + return 0; > + > + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); > + if (ret) > + return ret; > + > + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n"); > + gpiod_set_value_cansleep(ctx->reset_gpio, 1); > + usleep_range(20, 40); > + gpiod_set_value_cansleep(ctx->reset_gpio, 0); > + msleep(20); > + > + ctx->prepared = true; > + > + return 0; > +} > + > +static const struct drm_display_mode xbd599_default_mode = { > + .hdisplay = 720, > + .hsync_start = 720 + 40, > + .hsync_end = 720 + 40 + 40, > + .htotal = 720 + 40 + 40 + 40, > + .vdisplay = 1440, > + .vsync_start = 1440 + 18, > + .vsync_end = 1440 + 18 + 10, > + .vtotal = 1440 + 18 + 10 + 17, > + .vrefresh = 60, > + .clock = 69000, > + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, > + > + .width_mm = 68, > + .height_mm = 136, > + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, > +}; > + > +static int xbd599_get_modes(struct drm_panel *panel, > + struct drm_connector *connector) > +{ > + struct xbd599 *ctx = panel_to_xbd599(panel); > + struct drm_display_mode *mode; > + > + mode = drm_mode_duplicate(connector->dev, &xbd599_default_mode); > + if (!mode) { > + DRM_DEV_ERROR(ctx->dev, "Failed to add mode\n"); > + 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 xbd599_drm_funcs = { > + .disable = xbd599_disable, > + .unprepare = xbd599_unprepare, > + .enable = xbd599_enable, > + .prepare = xbd599_prepare, > + .get_modes = xbd599_get_modes, > +}; > + > +static int xbd599_probe(struct mipi_dsi_device *dsi) > +{ > + struct device *dev = &dsi->dev; > + struct xbd599 *ctx; > + int i, ret; > + > + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); > + if (!ctx) > + return -ENOMEM; > + > + for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) > + ctx->supplies[i].supply = regulator_names[i]; > + > + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), > + ctx->supplies); > + if (ret < 0) { > + DRM_DEV_ERROR(&dsi->dev, "cannot get regulators\n"); > + return ret; > + } > + > + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); > + if (IS_ERR(ctx->reset_gpio)) { > + DRM_DEV_ERROR(dev, "cannot get reset gpio\n"); > + return PTR_ERR(ctx->reset_gpio); > + } > + > + mipi_dsi_set_drvdata(dsi, ctx); > + > + ctx->dev = dev; > + > + dsi->lanes = 4; > + dsi->format = MIPI_DSI_FMT_RGB888; > + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; > + > + drm_panel_init(&ctx->panel, &dsi->dev, &xbd599_drm_funcs, > + DRM_MODE_CONNECTOR_DSI); > + > + ret = drm_panel_of_backlight(&ctx->panel); > + if (ret) > + return ret; > + > + drm_panel_add(&ctx->panel); > + > + ret = mipi_dsi_attach(dsi); > + if (ret < 0) { > + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n"); > + drm_panel_remove(&ctx->panel); > + return ret; > + } > + > + DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n", > + xbd599_default_mode.hdisplay, > + xbd599_default_mode.vdisplay, > + xbd599_default_mode.vrefresh, > + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); > + > + return 0; > +} > + > +static void xbd599_shutdown(struct mipi_dsi_device *dsi) > +{ > + struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi); > + int ret; > + > + ret = xbd599_unprepare(&ctx->panel); Use drm_panel_unprepare(). There may be, or may come functionality in drm_panel that is required. > + if (ret < 0) > + DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n", > + ret); > +} > + > +static int xbd599_remove(struct mipi_dsi_device *dsi) > +{ > + struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi); > + int ret; > + > + xbd599_shutdown(dsi); > + > + ret = mipi_dsi_detach(dsi); > + if (ret < 0) > + DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n", > + ret); > + > + drm_panel_remove(&ctx->panel); > + > + return 0; > +} > + > +static const struct of_device_id xbd599_of_match[] = { > + { .compatible = "xingbangda,xbd599", }, > + { /* sentinel */ } > +}; > +MODULE_DEVICE_TABLE(of, xbd599_of_match); > + > +static struct mipi_dsi_driver xbd599_driver = { > + .probe = xbd599_probe, > + .remove = xbd599_remove, > + .shutdown = xbd599_shutdown, > + .driver = { > + .name = DRV_NAME, > + .of_match_table = xbd599_of_match, > + }, > +}; > +module_mipi_dsi_driver(xbd599_driver); > + > +MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>"); > +MODULE_DESCRIPTION("DRM driver for Xingbangda XBD599 MIPI DSI panel"); > +MODULE_LICENSE("GPL v2"); > -- > 2.24.1
于 2020年3月14日 GMT+08:00 下午4:00:00, Sam Ravnborg <sam@ravnborg.org> 写到: >Hi Icenowy > >A few details in the following. > > Sam > >On Thu, Mar 12, 2020 at 12:33:27AM +0800, Icenowy Zheng wrote: >> Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI IPS LCD panel made by >> Xingbangda, which is used on PinePhone final assembled phones. >> >> Add support for it. >> >> Signed-off-by: Icenowy Zheng <icenowy@aosc.io> >> --- >> drivers/gpu/drm/panel/Kconfig | 9 + >> drivers/gpu/drm/panel/Makefile | 1 + >> .../gpu/drm/panel/panel-xingbangda-xbd599.c | 367 >++++++++++++++++++ >> 3 files changed, 377 insertions(+) >> create mode 100644 drivers/gpu/drm/panel/panel-xingbangda-xbd599.c >> >> +++ b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c >> @@ -0,0 +1,367 @@ >> +// SPDX-License-Identifier: GPL-2.0 >> +/* >> + * Xingbangda XBD599 MIPI-DSI panel driver >> + * >> + * Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io> >2020? The work started at Mid 2019. Is 2019-2020 okay? > >> + * >> + * Based on panel-rocktech-jh057n00900.c, which is: >> + * Copyright (C) Purism SPC 2019 >> + */ >> + >> +#include <linux/gpio/consumer.h> >> +#include <linux/delay.h> >> +#include <linux/mod_devicetable.h> >> +#include <linux/module.h> >> +#include <linux/of_device.h> >> +#include <linux/regulator/consumer.h> >Sort alphabetically. > >> + >> +#include <drm/drm_mipi_dsi.h> >> +#include <drm/drm_modes.h> >> +#include <drm/drm_panel.h> >> +#include <drm/drm_print.h> >> + >> +#define DRV_NAME "panel-xingbangda-xbd599" >No reason for this indirection, it is only used once > >> + >> +/* Manufacturer specific Commands send via DSI */ >> +#define ST7703_CMD_ALL_PIXEL_OFF 0x22 >> +#define ST7703_CMD_ALL_PIXEL_ON 0x23 >> +#define ST7703_CMD_SETDISP 0xB2 >> +#define ST7703_CMD_SETRGBIF 0xB3 >> +#define ST7703_CMD_SETCYC 0xB4 >> +#define ST7703_CMD_SETBGP 0xB5 >> +#define ST7703_CMD_SETVCOM 0xB6 >> +#define ST7703_CMD_SETOTP 0xB7 >> +#define ST7703_CMD_SETPOWER_EXT 0xB8 >> +#define ST7703_CMD_SETEXTC 0xB9 >> +#define ST7703_CMD_SETMIPI 0xBA >> +#define ST7703_CMD_SETVDC 0xBC >> +#define ST7703_CMD_SETSCR 0xC0 >> +#define ST7703_CMD_SETPOWER 0xC1 >> +#define ST7703_CMD_UNK_C6 0xC6 >> +#define ST7703_CMD_SETPANEL 0xCC >> +#define ST7703_CMD_SETGAMMA 0xE0 >> +#define ST7703_CMD_SETEQ 0xE3 >> +#define ST7703_CMD_SETGIP1 0xE9 >> +#define ST7703_CMD_SETGIP2 0xEA >> + >> +static const char * const regulator_names[] = { >> + "iovcc", >> + "vcc", >> +}; >> + >> +struct xbd599 { >> + struct device *dev; >> + struct drm_panel panel; >> + struct gpio_desc *reset_gpio; >> + struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)]; >> + bool prepared; >> +}; >> + >> +static inline struct xbd599 *panel_to_xbd599(struct drm_panel >*panel) >> +{ >> + return container_of(panel, struct xbd599, panel); >> +} >> + >> +#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \ >> + static const u8 d[] = { seq }; \ >> + int ret; \ >> + ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \ >> + if (ret < 0) \ >> + return ret; \ >> + } while (0) >> + >> +static int xbd599_init_sequence(struct xbd599 *ctx) >> +{ >> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); >> + struct device *dev = ctx->dev; >> + int ret; >> + >> + /* >> + * Init sequence was supplied by the panel vendor. >> + */ >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, >> + 0xF1, 0x12, 0x83); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI, >> + 0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00, >> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25, >> + 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4F, 0x11, >> + 0x00, 0x00, 0x37); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, >> + 0x25, 0x22, 0x20, 0x03); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, >> + 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00, >> + 0x00, 0x00); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, >> + 0x73, 0x73, 0x50, 0x50, 0x00, 0xC0, 0x08, 0x70, >> + 0x00); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0xF0); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, >> + 0x00, 0x00, 0x0B, 0x0B, 0x10, 0x10, 0x00, 0x00, >> + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); >> + dsi_dcs_write_seq(dsi, 0xC6, 0x01, 0x00, 0xFF, 0xFF, 0x00); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, >> + 0x74, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xFF, 0xFF, >> + 0xCC, 0xCC, 0x77, 0x77); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x07, 0x07); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x2C, 0x2C); >> + dsi_dcs_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00); >> + >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1, >> + 0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12, >> + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, >> + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, >> + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, >> + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, >> + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, >> + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, >> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2, >> + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, >> + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, >> + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, >> + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, >> + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, >> + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, >> + 0x00, 0x00, 0x00 ,0x00, 0x00, 0x00, 0x03, 0x0A, >> + 0xA5, 0x00, 0x00, 0x00, 0x00); >> + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA, >> + 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35, >> + 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12, >> + 0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, >> + 0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, >> + 0x12, 0x18); >> + msleep(20); >> + >> + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); >> + if (ret < 0) { >> + DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n"); >> + return ret; >> + } >> + msleep(250); >> + >> + ret = mipi_dsi_dcs_set_display_on(dsi); >> + if (ret) >> + return ret; >> + msleep(50); >> + >> + DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n"); >> + return 0; >> +} >> + >> +static int xbd599_disable(struct drm_panel *panel) >> +{ >> + struct xbd599 *ctx = panel_to_xbd599(panel); >> + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); >> + >> + return mipi_dsi_dcs_set_display_off(dsi); >> +} >The following is the same for many panels but anyway. > >The init order for a display is > > prepare > enable > > # Display is now fully operational > > disable > unprepare > > # display is now off and turned off (no power) > >So when reading panel drivers my personal preference is to read the >functions in that order - this makes it easier to follow the sequence. > >Thats just my personal opinion - so feel free to ignore. > >> + >> +static int xbd599_unprepare(struct drm_panel *panel) >> +{ >> + struct xbd599 *ctx = panel_to_xbd599(panel); >> + >> + if (!ctx->prepared) >> + return 0; >> + >> + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); >> + ctx->prepared = false; >> + >> + return 0; >> +} >Maybe activate reset before power is turned off. >So when power is turned on again later the panel is kept in reset. > >This would also make this a closer mirror of what is done in prepare() > >> + >> +static int xbd599_enable(struct drm_panel *panel) >> +{ >> + struct xbd599 *ctx = panel_to_xbd599(panel); >> + int ret; >> + >> + ret = xbd599_init_sequence(ctx); >> + if (ret < 0) { >> + DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n", >> + ret); >> + return ret; >> + } >> + >> + return 0; >> +} >> + >> +static int xbd599_prepare(struct drm_panel *panel) >> +{ >> + struct xbd599 *ctx = panel_to_xbd599(panel); >> + int ret; >> + >> + if (ctx->prepared) >> + return 0; >> + >> + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), >ctx->supplies); >> + if (ret) >> + return ret; >> + >> + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n"); >> + gpiod_set_value_cansleep(ctx->reset_gpio, 1); >> + usleep_range(20, 40); >> + gpiod_set_value_cansleep(ctx->reset_gpio, 0); >> + msleep(20); >> + >> + ctx->prepared = true; >> + >> + return 0; >> +} >> + >> +static const struct drm_display_mode xbd599_default_mode = { >> + .hdisplay = 720, >> + .hsync_start = 720 + 40, >> + .hsync_end = 720 + 40 + 40, >> + .htotal = 720 + 40 + 40 + 40, >> + .vdisplay = 1440, >> + .vsync_start = 1440 + 18, >> + .vsync_end = 1440 + 18 + 10, >> + .vtotal = 1440 + 18 + 10 + 17, >> + .vrefresh = 60, >> + .clock = 69000, >> + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, >> + >> + .width_mm = 68, >> + .height_mm = 136, >> + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, >> +}; >> + >> +static int xbd599_get_modes(struct drm_panel *panel, >> + struct drm_connector *connector) >> +{ >> + struct xbd599 *ctx = panel_to_xbd599(panel); >> + struct drm_display_mode *mode; >> + >> + mode = drm_mode_duplicate(connector->dev, &xbd599_default_mode); >> + if (!mode) { >> + DRM_DEV_ERROR(ctx->dev, "Failed to add mode\n"); >> + 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 xbd599_drm_funcs = { >> + .disable = xbd599_disable, >> + .unprepare = xbd599_unprepare, >> + .enable = xbd599_enable, >> + .prepare = xbd599_prepare, >> + .get_modes = xbd599_get_modes, >> +}; >> + >> +static int xbd599_probe(struct mipi_dsi_device *dsi) >> +{ >> + struct device *dev = &dsi->dev; >> + struct xbd599 *ctx; >> + int i, ret; >> + >> + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); >> + if (!ctx) >> + return -ENOMEM; >> + >> + for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) >> + ctx->supplies[i].supply = regulator_names[i]; >> + >> + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), >> + ctx->supplies); >> + if (ret < 0) { >> + DRM_DEV_ERROR(&dsi->dev, "cannot get regulators\n"); >> + return ret; >> + } >> + >> + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); >> + if (IS_ERR(ctx->reset_gpio)) { >> + DRM_DEV_ERROR(dev, "cannot get reset gpio\n"); >> + return PTR_ERR(ctx->reset_gpio); >> + } >> + >> + mipi_dsi_set_drvdata(dsi, ctx); >> + >> + ctx->dev = dev; >> + >> + dsi->lanes = 4; >> + dsi->format = MIPI_DSI_FMT_RGB888; >> + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | >MIPI_DSI_MODE_VIDEO_SYNC_PULSE; >> + >> + drm_panel_init(&ctx->panel, &dsi->dev, &xbd599_drm_funcs, >> + DRM_MODE_CONNECTOR_DSI); >> + >> + ret = drm_panel_of_backlight(&ctx->panel); >> + if (ret) >> + return ret; >> + >> + drm_panel_add(&ctx->panel); >> + >> + ret = mipi_dsi_attach(dsi); >> + if (ret < 0) { >> + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n"); >> + drm_panel_remove(&ctx->panel); >> + return ret; >> + } >> + >> + DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n", >> + xbd599_default_mode.hdisplay, >> + xbd599_default_mode.vdisplay, >> + xbd599_default_mode.vrefresh, >> + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); >> + >> + return 0; >> +} >> + >> +static void xbd599_shutdown(struct mipi_dsi_device *dsi) >> +{ >> + struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi); >> + int ret; >> + >> + ret = xbd599_unprepare(&ctx->panel); > >Use drm_panel_unprepare(). >There may be, or may come functionality in drm_panel that is required. > >> + if (ret < 0) >> + DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n", >> + ret); >> +} >> + >> +static int xbd599_remove(struct mipi_dsi_device *dsi) >> +{ >> + struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi); >> + int ret; >> + >> + xbd599_shutdown(dsi); >> + >> + ret = mipi_dsi_detach(dsi); >> + if (ret < 0) >> + DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n", >> + ret); >> + >> + drm_panel_remove(&ctx->panel); >> + >> + return 0; >> +} >> + >> +static const struct of_device_id xbd599_of_match[] = { >> + { .compatible = "xingbangda,xbd599", }, >> + { /* sentinel */ } >> +}; >> +MODULE_DEVICE_TABLE(of, xbd599_of_match); >> + >> +static struct mipi_dsi_driver xbd599_driver = { >> + .probe = xbd599_probe, >> + .remove = xbd599_remove, >> + .shutdown = xbd599_shutdown, >> + .driver = { >> + .name = DRV_NAME, >> + .of_match_table = xbd599_of_match, >> + }, >> +}; >> +module_mipi_dsi_driver(xbd599_driver); >> + >> +MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>"); >> +MODULE_DESCRIPTION("DRM driver for Xingbangda XBD599 MIPI DSI >panel"); >> +MODULE_LICENSE("GPL v2"); >> -- >> 2.24.1
Hi Icenowy > >> +++ b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c > >> @@ -0,0 +1,367 @@ > >> +// SPDX-License-Identifier: GPL-2.0 > >> +/* > >> + * Xingbangda XBD599 MIPI-DSI panel driver > >> + * > >> + * Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io> > >2020? > > The work started at Mid 2019. > > Is 2019-2020 okay? We see this in other places so I guess it is. The point here is that the driver contains work from 2020 so you should at least specify 2020. Sam
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index da3b84602cdd..d648f40469c7 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -413,6 +413,15 @@ config DRM_PANEL_TRULY_NT35597_WQXGA Say Y here if you want to enable support for Truly NT35597 WQXGA Dual DSI Video Mode panel +config DRM_PANEL_XINGBANGDA_XBD599 + tristate "Xingbangda XBD599 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 the Xingbangda XBD599 + MIPI DSI Video Mode panel. + config DRM_PANEL_XINPENG_XPP055C272 tristate "Xinpeng XPP055C272 panel driver" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index af1e2a3cc5fc..d9645f079e59 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -44,4 +44,5 @@ obj-$(CONFIG_DRM_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o obj-$(CONFIG_DRM_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o obj-$(CONFIG_DRM_PANEL_TPO_TPG110) += panel-tpo-tpg110.o obj-$(CONFIG_DRM_PANEL_TRULY_NT35597_WQXGA) += panel-truly-nt35597.o +obj-$(CONFIG_DRM_PANEL_XINGBANGDA_XBD599) += panel-xingbangda-xbd599.o obj-$(CONFIG_DRM_PANEL_XINPENG_XPP055C272) += panel-xinpeng-xpp055c272.o diff --git a/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c new file mode 100644 index 000000000000..68a5d8bb7f26 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-xingbangda-xbd599.c @@ -0,0 +1,367 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Xingbangda XBD599 MIPI-DSI panel driver + * + * Copyright (C) 2019 Icenowy Zheng <icenowy@aosc.io> + * + * Based on panel-rocktech-jh057n00900.c, which is: + * Copyright (C) Purism SPC 2019 + */ + +#include <linux/gpio/consumer.h> +#include <linux/delay.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regulator/consumer.h> + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_print.h> + +#define DRV_NAME "panel-xingbangda-xbd599" + +/* Manufacturer specific Commands send via DSI */ +#define ST7703_CMD_ALL_PIXEL_OFF 0x22 +#define ST7703_CMD_ALL_PIXEL_ON 0x23 +#define ST7703_CMD_SETDISP 0xB2 +#define ST7703_CMD_SETRGBIF 0xB3 +#define ST7703_CMD_SETCYC 0xB4 +#define ST7703_CMD_SETBGP 0xB5 +#define ST7703_CMD_SETVCOM 0xB6 +#define ST7703_CMD_SETOTP 0xB7 +#define ST7703_CMD_SETPOWER_EXT 0xB8 +#define ST7703_CMD_SETEXTC 0xB9 +#define ST7703_CMD_SETMIPI 0xBA +#define ST7703_CMD_SETVDC 0xBC +#define ST7703_CMD_SETSCR 0xC0 +#define ST7703_CMD_SETPOWER 0xC1 +#define ST7703_CMD_UNK_C6 0xC6 +#define ST7703_CMD_SETPANEL 0xCC +#define ST7703_CMD_SETGAMMA 0xE0 +#define ST7703_CMD_SETEQ 0xE3 +#define ST7703_CMD_SETGIP1 0xE9 +#define ST7703_CMD_SETGIP2 0xEA + +static const char * const regulator_names[] = { + "iovcc", + "vcc", +}; + +struct xbd599 { + struct device *dev; + struct drm_panel panel; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)]; + bool prepared; +}; + +static inline struct xbd599 *panel_to_xbd599(struct drm_panel *panel) +{ + return container_of(panel, struct xbd599, panel); +} + +#define dsi_dcs_write_seq(dsi, cmd, seq...) do { \ + static const u8 d[] = { seq }; \ + int ret; \ + ret = mipi_dsi_dcs_write(dsi, cmd, d, ARRAY_SIZE(d)); \ + if (ret < 0) \ + return ret; \ + } while (0) + +static int xbd599_init_sequence(struct xbd599 *ctx) +{ + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + struct device *dev = ctx->dev; + int ret; + + /* + * Init sequence was supplied by the panel vendor. + */ + dsi_dcs_write_seq(dsi, ST7703_CMD_SETEXTC, + 0xF1, 0x12, 0x83); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETMIPI, + 0x33, 0x81, 0x05, 0xF9, 0x0E, 0x0E, 0x20, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x44, 0x25, + 0x00, 0x91, 0x0a, 0x00, 0x00, 0x02, 0x4F, 0x11, + 0x00, 0x00, 0x37); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER_EXT, + 0x25, 0x22, 0x20, 0x03); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETRGBIF, + 0x10, 0x10, 0x05, 0x05, 0x03, 0xFF, 0x00, 0x00, + 0x00, 0x00); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETSCR, + 0x73, 0x73, 0x50, 0x50, 0x00, 0xC0, 0x08, 0x70, + 0x00); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETVDC, 0x4E); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPANEL, 0x0B); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETCYC, 0x80); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETDISP, 0xF0, 0x12, 0xF0); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETEQ, + 0x00, 0x00, 0x0B, 0x0B, 0x10, 0x10, 0x00, 0x00, + 0x00, 0x00, 0xFF, 0x00, 0xC0, 0x10); + dsi_dcs_write_seq(dsi, 0xC6, 0x01, 0x00, 0xFF, 0xFF, 0x00); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETPOWER, + 0x74, 0x00, 0x32, 0x32, 0x77, 0xF1, 0xFF, 0xFF, + 0xCC, 0xCC, 0x77, 0x77); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETBGP, 0x07, 0x07); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETVCOM, 0x2C, 0x2C); + dsi_dcs_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00); + + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP1, + 0x82, 0x10, 0x06, 0x05, 0xA2, 0x0A, 0xA5, 0x12, + 0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38, + 0x0C, 0x00, 0x03, 0x00, 0x00, 0x00, 0x0C, 0x00, + 0x03, 0x00, 0x00, 0x00, 0x75, 0x75, 0x31, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x13, 0x88, 0x64, + 0x64, 0x20, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x02, 0x88, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGIP2, + 0x02, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x02, 0x46, 0x02, 0x88, + 0x88, 0x88, 0x88, 0x88, 0x88, 0x64, 0x88, 0x13, + 0x57, 0x13, 0x88, 0x88, 0x88, 0x88, 0x88, 0x88, + 0x75, 0x88, 0x23, 0x14, 0x00, 0x00, 0x02, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00 ,0x00, 0x00, 0x00, 0x03, 0x0A, + 0xA5, 0x00, 0x00, 0x00, 0x00); + dsi_dcs_write_seq(dsi, ST7703_CMD_SETGAMMA, + 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, 0x35, + 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, 0x12, + 0x18, 0x00, 0x09, 0x0D, 0x23, 0x27, 0x3C, 0x41, + 0x35, 0x07, 0x0D, 0x0E, 0x12, 0x13, 0x10, 0x12, + 0x12, 0x18); + msleep(20); + + ret = mipi_dsi_dcs_exit_sleep_mode(dsi); + if (ret < 0) { + DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n"); + return ret; + } + msleep(250); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret) + return ret; + msleep(50); + + DRM_DEV_DEBUG_DRIVER(dev, "Panel init sequence done\n"); + return 0; +} + +static int xbd599_disable(struct drm_panel *panel) +{ + struct xbd599 *ctx = panel_to_xbd599(panel); + struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev); + + return mipi_dsi_dcs_set_display_off(dsi); +} + +static int xbd599_unprepare(struct drm_panel *panel) +{ + struct xbd599 *ctx = panel_to_xbd599(panel); + + if (!ctx->prepared) + return 0; + + regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + ctx->prepared = false; + + return 0; +} + +static int xbd599_enable(struct drm_panel *panel) +{ + struct xbd599 *ctx = panel_to_xbd599(panel); + int ret; + + ret = xbd599_init_sequence(ctx); + if (ret < 0) { + DRM_DEV_ERROR(ctx->dev, "Panel init sequence failed: %d\n", + ret); + return ret; + } + + return 0; +} + +static int xbd599_prepare(struct drm_panel *panel) +{ + struct xbd599 *ctx = panel_to_xbd599(panel); + int ret; + + if (ctx->prepared) + return 0; + + ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret) + return ret; + + DRM_DEV_DEBUG_DRIVER(ctx->dev, "Resetting the panel\n"); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(20, 40); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + msleep(20); + + ctx->prepared = true; + + return 0; +} + +static const struct drm_display_mode xbd599_default_mode = { + .hdisplay = 720, + .hsync_start = 720 + 40, + .hsync_end = 720 + 40 + 40, + .htotal = 720 + 40 + 40 + 40, + .vdisplay = 1440, + .vsync_start = 1440 + 18, + .vsync_end = 1440 + 18 + 10, + .vtotal = 1440 + 18 + 10 + 17, + .vrefresh = 60, + .clock = 69000, + .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, + + .width_mm = 68, + .height_mm = 136, + .type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, +}; + +static int xbd599_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct xbd599 *ctx = panel_to_xbd599(panel); + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &xbd599_default_mode); + if (!mode) { + DRM_DEV_ERROR(ctx->dev, "Failed to add mode\n"); + 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 xbd599_drm_funcs = { + .disable = xbd599_disable, + .unprepare = xbd599_unprepare, + .enable = xbd599_enable, + .prepare = xbd599_prepare, + .get_modes = xbd599_get_modes, +}; + +static int xbd599_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct xbd599 *ctx; + int i, ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + for (i = 0; i < ARRAY_SIZE(ctx->supplies); i++) + ctx->supplies[i].supply = regulator_names[i]; + + ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret < 0) { + DRM_DEV_ERROR(&dsi->dev, "cannot get regulators\n"); + return ret; + } + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(ctx->reset_gpio)) { + DRM_DEV_ERROR(dev, "cannot get reset gpio\n"); + return PTR_ERR(ctx->reset_gpio); + } + + mipi_dsi_set_drvdata(dsi, ctx); + + ctx->dev = dev; + + dsi->lanes = 4; + dsi->format = MIPI_DSI_FMT_RGB888; + dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE; + + drm_panel_init(&ctx->panel, &dsi->dev, &xbd599_drm_funcs, + DRM_MODE_CONNECTOR_DSI); + + ret = drm_panel_of_backlight(&ctx->panel); + if (ret) + return ret; + + drm_panel_add(&ctx->panel); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n"); + drm_panel_remove(&ctx->panel); + return ret; + } + + DRM_DEV_INFO(dev, "%ux%u@%u %ubpp dsi %udl - ready\n", + xbd599_default_mode.hdisplay, + xbd599_default_mode.vdisplay, + xbd599_default_mode.vrefresh, + mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes); + + return 0; +} + +static void xbd599_shutdown(struct mipi_dsi_device *dsi) +{ + struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + ret = xbd599_unprepare(&ctx->panel); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to unprepare panel: %d\n", + ret); +} + +static int xbd599_remove(struct mipi_dsi_device *dsi) +{ + struct xbd599 *ctx = mipi_dsi_get_drvdata(dsi); + int ret; + + xbd599_shutdown(dsi); + + ret = mipi_dsi_detach(dsi); + if (ret < 0) + DRM_DEV_ERROR(&dsi->dev, "Failed to detach from DSI host: %d\n", + ret); + + drm_panel_remove(&ctx->panel); + + return 0; +} + +static const struct of_device_id xbd599_of_match[] = { + { .compatible = "xingbangda,xbd599", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, xbd599_of_match); + +static struct mipi_dsi_driver xbd599_driver = { + .probe = xbd599_probe, + .remove = xbd599_remove, + .shutdown = xbd599_shutdown, + .driver = { + .name = DRV_NAME, + .of_match_table = xbd599_of_match, + }, +}; +module_mipi_dsi_driver(xbd599_driver); + +MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>"); +MODULE_DESCRIPTION("DRM driver for Xingbangda XBD599 MIPI DSI panel"); +MODULE_LICENSE("GPL v2");
Xingbangda XBD599 is a 5.99" 720x1440 MIPI-DSI IPS LCD panel made by Xingbangda, which is used on PinePhone final assembled phones. Add support for it. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + .../gpu/drm/panel/panel-xingbangda-xbd599.c | 367 ++++++++++++++++++ 3 files changed, 377 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-xingbangda-xbd599.c