| // SPDX-License-Identifier: GPL-2.0-only |
| |
| #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/drm_mipi_dsi.h> |
| #include <drm/drm_modes.h> |
| #include <drm/drm_panel.h> |
| |
| struct tm5p5_nt35596 { |
| struct drm_panel panel; |
| struct mipi_dsi_device *dsi; |
| struct regulator_bulk_data supplies[2]; |
| struct gpio_desc *reset_gpio; |
| bool prepared; |
| }; |
| |
| static inline struct tm5p5_nt35596 *to_tm5p5_nt35596(struct drm_panel *panel) |
| { |
| return container_of(panel, struct tm5p5_nt35596, panel); |
| } |
| |
| #define dsi_generic_write_seq(dsi, seq...) do { \ |
| static const u8 d[] = { seq }; \ |
| int ret; \ |
| ret = mipi_dsi_generic_write(dsi, d, ARRAY_SIZE(d)); \ |
| if (ret < 0) \ |
| return ret; \ |
| } while (0) |
| |
| #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 tm5p5_nt35596_reset(struct tm5p5_nt35596 *ctx) |
| { |
| gpiod_set_value_cansleep(ctx->reset_gpio, 1); |
| usleep_range(1000, 2000); |
| gpiod_set_value_cansleep(ctx->reset_gpio, 0); |
| usleep_range(1000, 2000); |
| gpiod_set_value_cansleep(ctx->reset_gpio, 1); |
| usleep_range(15000, 16000); |
| } |
| |
| static int tm5p5_nt35596_on(struct tm5p5_nt35596 *ctx) |
| { |
| struct mipi_dsi_device *dsi = ctx->dsi; |
| |
| dsi_generic_write_seq(dsi, 0xff, 0x05); |
| dsi_generic_write_seq(dsi, 0xfb, 0x01); |
| dsi_generic_write_seq(dsi, 0xc5, 0x31); |
| dsi_generic_write_seq(dsi, 0xff, 0x04); |
| dsi_generic_write_seq(dsi, 0x01, 0x84); |
| dsi_generic_write_seq(dsi, 0x05, 0x25); |
| dsi_generic_write_seq(dsi, 0x06, 0x01); |
| dsi_generic_write_seq(dsi, 0x07, 0x20); |
| dsi_generic_write_seq(dsi, 0x08, 0x06); |
| dsi_generic_write_seq(dsi, 0x09, 0x08); |
| dsi_generic_write_seq(dsi, 0x0a, 0x10); |
| dsi_generic_write_seq(dsi, 0x0b, 0x10); |
| dsi_generic_write_seq(dsi, 0x0c, 0x10); |
| dsi_generic_write_seq(dsi, 0x0d, 0x14); |
| dsi_generic_write_seq(dsi, 0x0e, 0x14); |
| dsi_generic_write_seq(dsi, 0x0f, 0x14); |
| dsi_generic_write_seq(dsi, 0x10, 0x14); |
| dsi_generic_write_seq(dsi, 0x11, 0x14); |
| dsi_generic_write_seq(dsi, 0x12, 0x14); |
| dsi_generic_write_seq(dsi, 0x17, 0xf3); |
| dsi_generic_write_seq(dsi, 0x18, 0xc0); |
| dsi_generic_write_seq(dsi, 0x19, 0xc0); |
| dsi_generic_write_seq(dsi, 0x1a, 0xc0); |
| dsi_generic_write_seq(dsi, 0x1b, 0xb3); |
| dsi_generic_write_seq(dsi, 0x1c, 0xb3); |
| dsi_generic_write_seq(dsi, 0x1d, 0xb3); |
| dsi_generic_write_seq(dsi, 0x1e, 0xb3); |
| dsi_generic_write_seq(dsi, 0x1f, 0xb3); |
| dsi_generic_write_seq(dsi, 0x20, 0xb3); |
| dsi_generic_write_seq(dsi, 0xfb, 0x01); |
| dsi_generic_write_seq(dsi, 0xff, 0x00); |
| dsi_generic_write_seq(dsi, 0xfb, 0x01); |
| dsi_generic_write_seq(dsi, 0x35, 0x01); |
| dsi_generic_write_seq(dsi, 0xd3, 0x06); |
| dsi_generic_write_seq(dsi, 0xd4, 0x04); |
| dsi_generic_write_seq(dsi, 0x5e, 0x0d); |
| dsi_generic_write_seq(dsi, 0x11, 0x00); |
| msleep(100); |
| dsi_generic_write_seq(dsi, 0x29, 0x00); |
| dsi_generic_write_seq(dsi, 0x53, 0x24); |
| |
| return 0; |
| } |
| |
| static int tm5p5_nt35596_off(struct tm5p5_nt35596 *ctx) |
| { |
| struct mipi_dsi_device *dsi = ctx->dsi; |
| struct device *dev = &dsi->dev; |
| int ret; |
| |
| ret = mipi_dsi_dcs_set_display_off(dsi); |
| if (ret < 0) { |
| dev_err(dev, "Failed to set display off: %d\n", ret); |
| return ret; |
| } |
| msleep(60); |
| |
| ret = mipi_dsi_dcs_enter_sleep_mode(dsi); |
| if (ret < 0) { |
| dev_err(dev, "Failed to enter sleep mode: %d\n", ret); |
| return ret; |
| } |
| |
| dsi_dcs_write_seq(dsi, 0x4f, 0x01); |
| |
| return 0; |
| } |
| |
| static int tm5p5_nt35596_prepare(struct drm_panel *panel) |
| { |
| struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(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; |
| } |
| |
| tm5p5_nt35596_reset(ctx); |
| |
| ret = tm5p5_nt35596_on(ctx); |
| if (ret < 0) { |
| dev_err(dev, "Failed to initialize panel: %d\n", ret); |
| gpiod_set_value_cansleep(ctx->reset_gpio, 0); |
| regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), |
| ctx->supplies); |
| return ret; |
| } |
| |
| ctx->prepared = true; |
| return 0; |
| } |
| |
| static int tm5p5_nt35596_unprepare(struct drm_panel *panel) |
| { |
| struct tm5p5_nt35596 *ctx = to_tm5p5_nt35596(panel); |
| struct device *dev = &ctx->dsi->dev; |
| int ret; |
| |
| if (!ctx->prepared) |
| return 0; |
| |
| ret = tm5p5_nt35596_off(ctx); |
| if (ret < 0) |
| dev_err(dev, "Failed to un-initialize panel: %d\n", ret); |
| |
| gpiod_set_value_cansleep(ctx->reset_gpio, 0); |
| regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), |
| ctx->supplies); |
| |
| ctx->prepared = false; |
| return 0; |
| } |
| |
| static const struct drm_display_mode tm5p5_nt35596_mode = { |
| .clock = (1080 + 100 + 8 + 16) * (1920 + 4 + 2 + 4) * 60 / 1000, |
| .hdisplay = 1080, |
| .hsync_start = 1080 + 100, |
| .hsync_end = 1080 + 100 + 8, |
| .htotal = 1080 + 100 + 8 + 16, |
| .vdisplay = 1920, |
| .vsync_start = 1920 + 4, |
| .vsync_end = 1920 + 4 + 2, |
| .vtotal = 1920 + 4 + 2 + 4, |
| .width_mm = 68, |
| .height_mm = 121, |
| }; |
| |
| static int tm5p5_nt35596_get_modes(struct drm_panel *panel, |
| struct drm_connector *connector) |
| { |
| struct drm_display_mode *mode; |
| |
| mode = drm_mode_duplicate(connector->dev, &tm5p5_nt35596_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 tm5p5_nt35596_panel_funcs = { |
| .prepare = tm5p5_nt35596_prepare, |
| .unprepare = tm5p5_nt35596_unprepare, |
| .get_modes = tm5p5_nt35596_get_modes, |
| }; |
| |
| static int tm5p5_nt35596_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 tm5p5_nt35596_bl_get_brightness(struct backlight_device *bl) |
| { |
| struct mipi_dsi_device *dsi = bl_get_data(bl); |
| u16 brightness = bl->props.brightness; |
| 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 & 0xff; |
| } |
| |
| static const struct backlight_ops tm5p5_nt35596_bl_ops = { |
| .update_status = tm5p5_nt35596_bl_update_status, |
| .get_brightness = tm5p5_nt35596_bl_get_brightness, |
| }; |
| |
| static struct backlight_device * |
| tm5p5_nt35596_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, |
| &tm5p5_nt35596_bl_ops, &props); |
| } |
| |
| static int tm5p5_nt35596_probe(struct mipi_dsi_device *dsi) |
| { |
| struct device *dev = &dsi->dev; |
| struct tm5p5_nt35596 *ctx; |
| int ret; |
| |
| ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); |
| if (!ctx) |
| return -ENOMEM; |
| |
| ctx->supplies[0].supply = "vdd"; |
| ctx->supplies[1].supply = "vddio"; |
| ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), |
| ctx->supplies); |
| if (ret < 0) { |
| dev_err(dev, "Failed to get regulators: %d\n", ret); |
| return ret; |
| } |
| |
| ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); |
| if (IS_ERR(ctx->reset_gpio)) { |
| ret = PTR_ERR(ctx->reset_gpio); |
| dev_err(dev, "Failed to get reset-gpios: %d\n", ret); |
| 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_MODE_VIDEO_BURST | |
| MIPI_DSI_MODE_VIDEO_HSE | MIPI_DSI_MODE_NO_EOT_PACKET | |
| MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM; |
| |
| drm_panel_init(&ctx->panel, dev, &tm5p5_nt35596_panel_funcs, |
| DRM_MODE_CONNECTOR_DSI); |
| |
| ctx->panel.backlight = tm5p5_nt35596_create_backlight(dsi); |
| if (IS_ERR(ctx->panel.backlight)) { |
| ret = PTR_ERR(ctx->panel.backlight); |
| dev_err(dev, "Failed to create backlight: %d\n", ret); |
| return ret; |
| } |
| |
| 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 tm5p5_nt35596_remove(struct mipi_dsi_device *dsi) |
| { |
| struct tm5p5_nt35596 *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 tm5p5_nt35596_of_match[] = { |
| { .compatible = "asus,z00t-tm5p5-n35596" }, |
| { /* sentinel */ } |
| }; |
| MODULE_DEVICE_TABLE(of, tm5p5_nt35596_of_match); |
| |
| static struct mipi_dsi_driver tm5p5_nt35596_driver = { |
| .probe = tm5p5_nt35596_probe, |
| .remove = tm5p5_nt35596_remove, |
| .driver = { |
| .name = "panel-tm5p5-nt35596", |
| .of_match_table = tm5p5_nt35596_of_match, |
| }, |
| }; |
| module_mipi_dsi_driver(tm5p5_nt35596_driver); |
| |
| MODULE_AUTHOR("Konrad Dybcio <konradybcio@gmail.com>"); |
| MODULE_DESCRIPTION("DRM driver for tm5p5 nt35596 1080p video mode dsi panel"); |
| MODULE_LICENSE("GPL v2"); |