Add a driver for the LG.Philips SW43101 FHD (1080x1920) OLED DSI video mode panel. This driver has been generated using linux-mdss-dsi-panel-driver-generator.

Signed-off-by: Yassine Oudjana y.oudjana@protonmail.com --- Changes since v2: - Make the DT schema patch first in the series. - Use backlight_get_brightness where needed. - Remove 0xff mask from return value in sw43101_bl_get_brightness. - Constify struct backlight_properties props in sw43101_create_backlight. Changes since v1: - Add regulator support. - Add MAINTAINERS entry. - Dual-license DT binding.

MAINTAINERS | 1 + drivers/gpu/drm/panel/Kconfig | 10 + drivers/gpu/drm/panel/Makefile | 1 + .../gpu/drm/panel/panel-lgphilips-sw43101.c | 358 ++++++++++++++++++ 4 files changed, 370 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-lgphilips-sw43101.c

diff --git a/MAINTAINERS b/MAINTAINERS index b096425e3c01..d987bb703863 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6006,6 +6006,7 @@ DRM DRIVER FOR LG.PHILIPS SW43101 PANEL M: Yassine Oudjana y.oudjana@protonmail.com S: Maintained F: Documentation/devicetree/bindings/display/panel/lgphilips,sw43101.yaml +F: drivers/gpu/drm/panel/panel-lgphilips-sw43101.c

DRM DRIVER FOR LVDS PANELS M: Laurent Pinchart laurent.pinchart@ideasonboard.com diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index cfc8d644cedf..5157689fa3e6 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -238,6 +238,16 @@ config DRM_PANEL_SAMSUNG_LD9040 depends on OF && SPI select VIDEOMODE_HELPERS

+config DRM_PANEL_LGPHILIPS_SW43101 + tristate "LG.Philips SW43101 DSI video mode 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 LG.Philips SW43101 FHD + (1080x1920) OLED DSI video mode panel found on the Xiaomi Mi Note 2. + To compile this driver as a module, choose M here. + config DRM_PANEL_LG_LB035Q02 tristate "LG LB035Q024573 RGB panel" depends on GPIOLIB && OF && SPI diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index bca4cc1f2715..605954e2de70 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_DRM_PANEL_KHADAS_TS050) += panel-khadas-ts050.o obj-$(CONFIG_DRM_PANEL_KINGDISPLAY_KD097D04) += panel-kingdisplay-kd097d04.o obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK050H3146W) += panel-leadtek-ltk050h3146w.o obj-$(CONFIG_DRM_PANEL_LEADTEK_LTK500HD1829) += panel-leadtek-ltk500hd1829.o +obj-$(CONFIG_DRM_PANEL_LGPHILIPS_SW43101) += panel-lgphilips-sw43101.o obj-$(CONFIG_DRM_PANEL_LG_LB035Q02) += panel-lg-lb035q02.o obj-$(CONFIG_DRM_PANEL_LG_LG4573) += panel-lg-lg4573.o obj-$(CONFIG_DRM_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o diff --git a/drivers/gpu/drm/panel/panel-lgphilips-sw43101.c b/drivers/gpu/drm/panel/panel-lgphilips-sw43101.c new file mode 100644 index 000000000000..5b5b3fad1ab2 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-lgphilips-sw43101.c @@ -0,0 +1,358 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * LG.Philips SW43101 OLED Panel driver + * Generated with linux-mdss-dsi-panel-driver-generator + * + * Copyright (c) 2020 Yassine Oudjana y.oudjana@protonmail.com + */ + +#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 <video/mipi_display.h> + +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> + +static const char * const regulator_names[] = { + "vdd", + "avdd", + "elvdd", + "elvss", +}; + +struct sw43101_device { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data supplies[ARRAY_SIZE(regulator_names)]; + bool prepared; +}; + +static inline +struct sw43101_device *to_sw43101_device(struct drm_panel *panel) +{ + return container_of(panel, struct sw43101_device, panel); +} + +#define dsi_dcs_write_seq(dsi, seq...) do { \ + static const u8 d[] = { seq }; \ + int ret; \ + ret = mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \ + if (ret < 0) \ + return ret; \ + } while (0) + +static void sw43101_reset(struct sw43101_device *ctx) +{ + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(1000, 2000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + msleep(20); +} + +static int sw43101_on(struct sw43101_device *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + dsi_dcs_write_seq(dsi, 0xb0, 0x5a); + usleep_range(1000, 2000); + dsi_dcs_write_seq(dsi, 0xb2, 0x13, 0x12, 0x40, 0xd0, 0xff, 0xff, 0x15); + dsi_dcs_write_seq(dsi, 0xe3, 0x01); + usleep_range(1000, 2000); + dsi_dcs_write_seq(dsi, 0xf3, 0x03, 0x00, 0x00); + + ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x0020); + if (ret < 0) { + dev_err(dev, "Failed to set display brightness: %d\n", ret); + return ret; + } + + dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20); + dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00); + dsi_dcs_write_seq(dsi, 0xb0, 0x00); + usleep_range(1000, 2000); + + 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(120); + + ret = mipi_dsi_dcs_set_display_on(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display on: %d\n", ret); + return ret; + } + msleep(20); + + return 0; +} + +static int sw43101_off(struct sw43101_device *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct device *dev = &dsi->dev; + int ret; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + ret = mipi_dsi_dcs_set_display_off(dsi); + if (ret < 0) { + dev_err(dev, "Failed to set display off: %d\n", ret); + return ret; + } + usleep_range(2000, 3000); + + 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(128); + + return 0; +} + +static int sw43101_prepare(struct drm_panel *panel) +{ + struct sw43101_device *ctx = to_sw43101_device(panel); + 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; + } + + sw43101_reset(ctx); + + ret = sw43101_on(ctx); + if (ret < 0) { + dev_err(dev, "Failed to initialize panel: %d\n", ret); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + return ret; + } + + ctx->prepared = true; + return 0; +} + +static int sw43101_unprepare(struct drm_panel *panel) +{ + struct sw43101_device *ctx = to_sw43101_device(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + if (!ctx->prepared) + return 0; + + ret = sw43101_off(ctx); + if (ret < 0) + dev_err(dev, "Failed to un-initialize panel: %d\n", ret); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + + ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies); + if (ret < 0) { + dev_err(dev, "Failed to disable regulators: %d\n", ret); + return ret; + } + + ctx->prepared = false; + return 0; +} + +static const struct drm_display_mode sw43101_mode = { + .clock = (1080 + 56 + 8 + 60) * (1920 + 40 + 8 + 48) * 58 / 1000, + .hdisplay = 1080, + .hsync_start = 1080 + 56, + .hsync_end = 1080 + 56 + 8, + .htotal = 1080 + 56 + 8 + 60, + .vdisplay = 1920, + .vsync_start = 1920 + 40, + .vsync_end = 1920 + 40 + 8, + .vtotal = 1920 + 40 + 8 + 48, + .width_mm = 71, + .height_mm = 126, +}; + +static int sw43101_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + mode = drm_mode_duplicate(connector->dev, &sw43101_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 sw43101_panel_funcs = { + .prepare = sw43101_prepare, + .unprepare = sw43101_unprepare, + .get_modes = sw43101_get_modes, +}; + +static int sw43101_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(dsi, brightness); + if (ret < 0) + return ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + return 0; +} + +static int sw43101_bl_get_brightness(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_get_display_brightness(dsi, &brightness); + if (ret < 0) + return ret; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + return brightness; +} + +static const struct backlight_ops sw43101_bl_ops = { + .update_status = sw43101_bl_update_status, + .get_brightness = sw43101_bl_get_brightness, +}; + +static struct backlight_device * +sw43101_create_backlight(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + const struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 255, + .max_brightness = 255, + }; + + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, + &sw43101_bl_ops, &props); +} + +static int sw43101_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct sw43101_device *ctx; + size_t i; + int ret; + + ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + 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"); + + for (i = 0; i < ARRAY_SIZE(ctx->supplies); ++i) + ctx->supplies[i].supply = regulator_names[i]; + + ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies), + ctx->supplies); + if (ret < 0) { + dev_err(&dsi->dev, "Failed to get regulators\n"); + return ret; + } + + 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_CLOCK_NON_CONTINUOUS; + + drm_panel_init(&ctx->panel, dev, &sw43101_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + + ctx->panel.backlight = sw43101_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) { + dev_err(dev, "Failed to attach to DSI host: %d\n", ret); + return ret; + } + + return 0; +} + +static int sw43101_remove(struct mipi_dsi_device *dsi) +{ + struct sw43101_device *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); + + return 0; +} + +static const struct of_device_id sw43101_of_match[] = { + { .compatible = "lgphilips,sw43101" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, sw43101_of_match); + +static struct mipi_dsi_driver sw43101_driver = { + .probe = sw43101_probe, + .remove = sw43101_remove, + .driver = { + .name = "panel-lgphilips-sw43101", + .of_match_table = sw43101_of_match, + }, +}; +module_mipi_dsi_driver(sw43101_driver); + +MODULE_AUTHOR("Yassine Oudjana y.oudjana@protonmail.com"); +MODULE_DESCRIPTION("LG.Philips SW43101 DSI video mode panel driver"); +MODULE_LICENSE("GPL v2");