diff options
Diffstat (limited to 'drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c | 355 |
1 files changed, 355 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c b/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c new file mode 100644 index 000000000..b3235781e --- /dev/null +++ b/drivers/gpu/drm/panel/panel-asus-z00t-tm5p5-n35596.c @@ -0,0 +1,355 @@ +// 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 void 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); +} + +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"); |