Add driver for Samsung S6E8FCO DSI video mode panel, used in Xiaomi Mi A3 mobile phone.
Co-developed-by: Kamil Gołda <[email protected]> Signed-off-by: Kamil Gołda <[email protected]> Signed-off-by: Yedaya Katsman <[email protected]> Reviewed-by: Dmitry Baryshkov <[email protected]> --- MAINTAINERS | 1 + drivers/gpu/drm/panel/Kconfig | 12 ++ drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-samsung-s6e8fco.c | 293 ++++++++++++++++++++++++++ 4 files changed, 307 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 545d4cf68b9ac27765c7981e668e32cfecf3366b..238b5332eaf0e0cfb9834084e24671ccaee79939 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8187,6 +8187,7 @@ DRM DRIVER FOR SAMSUNG S6E8FCO PANELS M: Yedaya Katsman <[email protected]> S: Maintained F: Documentation/devicetree/bindings/display/panel/samsung,s6e8fco.yaml +F: drivers/gpu/drm/panel/panel-samsung-s6e8fco.c DRM DRIVER FOR SAMSUNG SOFEF00 DDIC M: David Heidelberg <[email protected]> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 7a83804fedca1b688ce6fbe4295ec9009007e693..734640bb3f73c83e9273573aeb720ea1ba20862f 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -893,6 +893,18 @@ config DRM_PANEL_SAMSUNG_S6E8AA5X01_AMS561RA01 ~5.6 inch AMOLED display, and the controller is driven by the MIPI DSI protocol with 4 lanes. +config DRM_PANEL_SAMSUNG_S6E8FCO + tristate "Samsung S6E8FCO DSI video mode panel" + depends on OF + depends on BACKLIGHT_CLASS_DEVICE + select DRM_MIPI_DSI + select VIDEOMODE_HELPERS + help + Say Y or M here if you want to enable support for the Samsung video + mode panel S6E8FCO. The panel has a 6.09 inch AMOLED display, with + a resolution of 720x1560. + Found in the Xiaomi Mi A3 smartphone (xiaomi-laurel). + config DRM_PANEL_SAMSUNG_SOFEF00 tristate "Samsung SOFEF00 DSI panel controller" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index b9562a6fdcb38bfd0dfee9e8c11e16149ada4386..54eca60e5b57328ea94ed7880f4dead981f87fc1 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -91,6 +91,7 @@ obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E88A0_AMS427AP24) += panel-samsung-s6e88a0-ams4 obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01) += panel-samsung-s6e88a0-ams452ef01.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0) += panel-samsung-s6e8aa0.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8AA5X01_AMS561RA01) += panel-samsung-s6e8aa5x01-ams561ra01.o +obj-$(CONFIG_DRM_PANEL_SAMSUNG_S6E8FCO) += panel-samsung-s6e8fco.o obj-$(CONFIG_DRM_PANEL_SAMSUNG_SOFEF00) += panel-samsung-sofef00.o obj-$(CONFIG_DRM_PANEL_SEIKO_43WVF1G) += panel-seiko-43wvf1g.o obj-$(CONFIG_DRM_PANEL_SHARP_LQ079L1SX01) += panel-sharp-lq079l1sx01.o diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e8fco.c b/drivers/gpu/drm/panel/panel-samsung-s6e8fco.c new file mode 100644 index 0000000000000000000000000000000000000000..7bbbe8af3e2eb9021ed7f555cb4ad2b0d7ea55ee --- /dev/null +++ b/drivers/gpu/drm/panel/panel-samsung-s6e8fco.c @@ -0,0 +1,293 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (c) 2025 Kamil Gołda <[email protected]> +// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: +// Copyright (c) 2025, The Linux Foundation. All rights reserved. + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/regulator/consumer.h> + +#include <video/mipi_display.h> + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_probe_helper.h> + +struct s6e8fco_samsungp { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct regulator_bulk_data *supplies; + struct gpio_desc *reset_gpio; +}; + +static const struct regulator_bulk_data s6e8fco_samsungp_supplies[] = { + { .supply = "vddio" }, + { .supply = "ldo" }, + { .supply = "iovcc" }, +}; + +static inline +struct s6e8fco_samsungp *to_s6e8fco_samsungp(struct drm_panel *panel) +{ + return container_of_const(panel, struct s6e8fco_samsungp, panel); +} + +static void s6e8fco_samsungp_reset(struct s6e8fco_samsungp *ctx) +{ + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(12000, 13000); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(2000, 3000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); +} + +static int s6e8fco_samsungp_on(struct s6e8fco_samsungp *ctx) +{ + struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi }; + + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0x5a, 0x5a); + + mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x0000); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, + 0x20); + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 50); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x04, 0xed); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xed, + 0xe4, 0x08, 0x96, 0xa4, 0x2a, 0x72, 0xe2, + 0xca, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0xa5, 0xa5); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x5a, 0x5a); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0x5a, 0x5a); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xe1, 0x93); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x05, 0xf4); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4, 0x03); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xed, 0x01, 0x81, 0x04); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0xa5, 0xa5); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0xa5, 0xa5); + + return dsi_ctx.accum_err; +} + +static int s6e8fco_samsungp_off(struct s6e8fco_samsungp *ctx) +{ + struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi }; + + + mipi_dsi_dcs_set_display_off_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 20); + mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 120); + + return dsi_ctx.accum_err; +} + +static int s6e8fco_samsungp_prepare(struct drm_panel *panel) +{ + struct s6e8fco_samsungp *ctx = to_s6e8fco_samsungp(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(s6e8fco_samsungp_supplies), ctx->supplies); + if (ret < 0) { + dev_err(dev, "Failed to enable regulators: %d\n", ret); + return ret; + } + + s6e8fco_samsungp_reset(ctx); + + ret = s6e8fco_samsungp_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(s6e8fco_samsungp_supplies), ctx->supplies); + return ret; + } + + return 0; +} + +static int s6e8fco_samsungp_unprepare(struct drm_panel *panel) +{ + struct s6e8fco_samsungp *ctx = to_s6e8fco_samsungp(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + ret = s6e8fco_samsungp_off(ctx); + if (ret < 0) + dev_err(dev, "Failed to un-initialize panel: %d\n", ret); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(s6e8fco_samsungp_supplies), ctx->supplies); + + return 0; +} + +static const struct drm_display_mode s6e8fco_samsungp_mode = { + .clock = (720 + 350 + 40 + 294) * (1560 + 17 + 2 + 5) * 60 / 1000, + .hdisplay = 720, + .hsync_start = 720 + 350, + .hsync_end = 720 + 350 + 40, + .htotal = 720 + 350 + 40 + 294, + .vdisplay = 1560, + .vsync_start = 1560 + 17, + .vsync_end = 1560 + 17 + 2, + .vtotal = 1560 + 17 + 2 + 5, + .width_mm = 65, + .height_mm = 140, + .type = DRM_MODE_TYPE_DRIVER, +}; + +static int s6e8fco_samsungp_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + return drm_connector_helper_get_modes_fixed(connector, &s6e8fco_samsungp_mode); +} + +static const struct drm_panel_funcs s6e8fco_samsungp_panel_funcs = { + .prepare = s6e8fco_samsungp_prepare, + .unprepare = s6e8fco_samsungp_unprepare, + .get_modes = s6e8fco_samsungp_get_modes, +}; + +static int s6e8fco_samsungp_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 s6e8fco_samsungp_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 s6e8fco_samsungp_bl_ops = { + .update_status = s6e8fco_samsungp_bl_update_status, + .get_brightness = s6e8fco_samsungp_bl_get_brightness, +}; + +static struct backlight_device * +s6e8fco_samsungp_create_backlight(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + const struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 268, + .max_brightness = 2047, + }; + + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, + &s6e8fco_samsungp_bl_ops, &props); +} + +static int s6e8fco_samsungp_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct s6e8fco_samsungp *ctx; + int ret; + + ctx = devm_drm_panel_alloc(dev, struct s6e8fco_samsungp, panel, + &s6e8fco_samsungp_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + if (IS_ERR(ctx)) + return PTR_ERR(ctx); + + ret = devm_regulator_bulk_get_const(dev, + ARRAY_SIZE(s6e8fco_samsungp_supplies), + s6e8fco_samsungp_supplies, + &ctx->supplies); + if (ret < 0) + return ret; + + 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_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | + MIPI_DSI_CLOCK_NON_CONTINUOUS; + + ctx->panel.prepare_prev_first = true; + + ctx->panel.backlight = s6e8fco_samsungp_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); + + ret = mipi_dsi_attach(dsi); + if (ret < 0) { + drm_panel_remove(&ctx->panel); + return dev_err_probe(dev, ret, "Failed to attach to DSI host\n"); + } + + return 0; +} + +static void s6e8fco_samsungp_remove(struct mipi_dsi_device *dsi) +{ + struct s6e8fco_samsungp *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 s6e8fco_samsungp_of_match[] = { + { .compatible = "samsung,s6e8fco" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, s6e8fco_samsungp_of_match); + +static struct mipi_dsi_driver s6e8fco_samsungp_driver = { + .probe = s6e8fco_samsungp_probe, + .remove = s6e8fco_samsungp_remove, + .driver = { + .name = "panel-samsung-s6e8fco", + .of_match_table = s6e8fco_samsungp_of_match, + }, +}; +module_mipi_dsi_driver(s6e8fco_samsungp_driver); + +MODULE_AUTHOR("Kamil Gołda <[email protected]>"); +MODULE_DESCRIPTION("DRM driver for s6e8fco samsung amoled video mode dsi panel"); +MODULE_LICENSE("GPL"); -- 2.53.0
