Some Pixel 3a XL devices have a Tianma panel. Add support for it, with the aid of linux-mdss-dsi-panel-driver-generator.
Link: https://github.com/msm8916-mainline/linux-mdss-dsi-panel-driver-generator Signed-off-by: Richard Acayan <[email protected]> --- drivers/gpu/drm/panel/Kconfig | 9 + drivers/gpu/drm/panel/Makefile | 1 + .../gpu/drm/panel/panel-novatek-nt37700f.c | 294 ++++++++++++++++++ 3 files changed, 304 insertions(+) create mode 100644 drivers/gpu/drm/panel/panel-novatek-nt37700f.c diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 76f6af819037..138d617e8195 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -553,6 +553,15 @@ config DRM_PANEL_NOVATEK_NT36672E LCD panel module. The panel has a resolution of 1080x2408 and uses 24 bit RGB per pixel. +config DRM_PANEL_NOVATEK_NT37700F + tristate "Novatek NT37700F DSI 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 Novatek NT37700F DSI + panel module. The panel has a resolution of 1080x2160. + config DRM_PANEL_NOVATEK_NT37801 tristate "Novatek NT37801/NT37810 AMOLED DSI panel" depends on OF diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index b9562a6fdcb3..9218a7d7ff34 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35950) += panel-novatek-nt35950.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36523) += panel-novatek-nt36523.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36672A) += panel-novatek-nt36672a.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36672E) += panel-novatek-nt36672e.o +obj-$(CONFIG_DRM_PANEL_NOVATEK_NT37700F) += panel-novatek-nt37700f.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT37801) += panel-novatek-nt37801.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o obj-$(CONFIG_DRM_PANEL_MANTIX_MLAF057WE51) += panel-mantix-mlaf057we51.o diff --git a/drivers/gpu/drm/panel/panel-novatek-nt37700f.c b/drivers/gpu/drm/panel/panel-novatek-nt37700f.c new file mode 100644 index 000000000000..491f1f30ce41 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-novatek-nt37700f.c @@ -0,0 +1,294 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2024, The Linux Foundation. All rights reserved. + * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree: + * Copyright (c) 2013, The Linux Foundation. All rights reserved. + */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/module.h> +#include <linux/of.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 nt37700f_tianma { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct gpio_desc *reset_gpio; +}; + +static inline +struct nt37700f_tianma *to_nt37700f_tianma(struct drm_panel *panel) +{ + return container_of(panel, struct nt37700f_tianma, panel); +} + +static void nt37700f_tianma_reset(struct nt37700f_tianma *ctx) +{ + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(1000, 2000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 11000); +} + +static int nt37700f_tianma_on(struct nt37700f_tianma *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; + + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0, 0x56); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xca, 0x52); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x06); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb5, 0x2b, 0x1a); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xcd, 0x04, 0x82); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x02); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xcc, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x80); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x55); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf6, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x56); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf6, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x81); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x07); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf3, 0x07); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x05); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf3, 0x25); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x01); + + mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x0437); + mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x086f); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20); + mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK); + + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc0, 0x56); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x02); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xcd, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0, 0x55, 0xaa, 0x52, 0x08, 0x04); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xd0, 0x11, 0x64); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x09); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb1, 0x20); + + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 120); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + + return dsi_ctx.accum_err; +} + +static int nt37700f_tianma_disable(struct drm_panel *panel) +{ + struct nt37700f_tianma *ctx = to_nt37700f_tianma(panel); + 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(50); + + 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(100); + + return 0; +} + +static int nt37700f_tianma_prepare(struct drm_panel *panel) +{ + struct nt37700f_tianma *ctx = to_nt37700f_tianma(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + nt37700f_tianma_reset(ctx); + + ret = nt37700f_tianma_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; + } + + return 0; +} + +static int nt37700f_tianma_unprepare(struct drm_panel *panel) +{ + struct nt37700f_tianma *ctx = to_nt37700f_tianma(panel); + + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + + return 0; +} + +static const struct drm_display_mode nt37700f_tianma_mode = { + .clock = (1080 + 32 + 32 + 98) * (2160 + 32 + 4 + 98) * 60 / 1000, + .hdisplay = 1080, + .hsync_start = 1080 + 32, + .hsync_end = 1080 + 32 + 32, + .htotal = 1080 + 32 + 32 + 98, + .vdisplay = 2160, + .vsync_start = 2160 + 32, + .vsync_end = 2160 + 32 + 4, + .vtotal = 2160 + 32 + 4 + 98, + .width_mm = 69, + .height_mm = 137, + .type = DRM_MODE_TYPE_DRIVER, +}; + +static int nt37700f_tianma_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + return drm_connector_helper_get_modes_fixed(connector, &nt37700f_tianma_mode); +} + +static const struct drm_panel_funcs nt37700f_tianma_panel_funcs = { + .prepare = nt37700f_tianma_prepare, + .unprepare = nt37700f_tianma_unprepare, + .disable = nt37700f_tianma_disable, + .get_modes = nt37700f_tianma_get_modes, +}; + +static int nt37700f_tianma_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; +} + +// TODO: Check if /sys/class/backlight/.../actual_brightness actually returns +// correct values. If not, remove this function. +static int nt37700f_tianma_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 nt37700f_tianma_bl_ops = { + .update_status = nt37700f_tianma_bl_update_status, + .get_brightness = nt37700f_tianma_bl_get_brightness, +}; + +static struct backlight_device * +nt37700f_tianma_create_backlight(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + const struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 2047, + .max_brightness = 2047, + }; + + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, + &nt37700f_tianma_bl_ops, &props); +} + +static int nt37700f_tianma_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct nt37700f_tianma *ctx; + 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"); + + 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_BURST | + MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM; + + drm_panel_init(&ctx->panel, dev, &nt37700f_tianma_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + ctx->panel.prepare_prev_first = true; + + ctx->panel.backlight = nt37700f_tianma_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 nt37700f_tianma_remove(struct mipi_dsi_device *dsi) +{ + struct nt37700f_tianma *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 nt37700f_tianma_of_match[] = { + { .compatible = "novatek,nt37700f" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, nt37700f_tianma_of_match); + +static struct mipi_dsi_driver nt37700f_tianma_driver = { + .probe = nt37700f_tianma_probe, + .remove = nt37700f_tianma_remove, + .driver = { + .name = "panel-novatek-nt37700f", + .of_match_table = nt37700f_tianma_of_match, + }, +}; +module_mipi_dsi_driver(nt37700f_tianma_driver); + +MODULE_DESCRIPTION("DRM driver for nt37700f cmd mode dsi tianma panel"); +MODULE_LICENSE("GPL"); -- 2.53.0
