Add driver for the Novatek NT37801 or NT37810 AMOLED DSI 1440x3200 panel in CMD mode, used on Qualcomm MTP8750 board (SM8750).
Reviewed-by: Neil Armstrong <neil.armstr...@linaro.org> Reviewed-by: Linus Walleij <linus.wall...@linaro.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlow...@linaro.org> --- MAINTAINERS | 6 + drivers/gpu/drm/panel/Kconfig | 10 + drivers/gpu/drm/panel/Makefile | 1 + drivers/gpu/drm/panel/panel-novatek-nt37801.c | 340 ++++++++++++++++++++++++++ 4 files changed, 357 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index b2c3be5f6131432647dd01f22bbf4bf1c8bde9e6..78cdd5f81c322c230a82c8a877b2338d932478cb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7595,6 +7595,12 @@ T: git https://gitlab.freedesktop.org/drm/misc/kernel.git F: Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml F: drivers/gpu/drm/panel/panel-novatek-nt36672a.c +DRM DRIVER FOR NOVATEK NT37801 PANELS +M: Krzysztof Kozlowski <k...@kernel.org> +S: Maintained +F: Documentation/devicetree/bindings/display/panel/novatek,nt37801.yaml +F: drivers/gpu/drm/panel/panel-novatek-nt37801.c + DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS M: Lyude Paul <ly...@redhat.com> M: Danilo Krummrich <d...@kernel.org> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index 7e9c60a626fbbabb954ed2a7e3d1ef5eee0679d6..c7b688995c8d31b7445aa79dcc310742e4e724d8 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -508,6 +508,16 @@ 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_NT37801 + tristate "Novatek NT37801/NT37810 AMOLED 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 NT37801 (or + NT37810) AMOLED DSI Video Mode LCD panel module with 1440x3200 + resolution. + config DRM_PANEL_NOVATEK_NT39016 tristate "Novatek NT39016 RGB/SPI panel" depends on OF && SPI diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile index 883974f0cba128e28f23e31512f8d30d59913b0e..2dcc224cba63e9cf59410fd974e5f068bb9e26b3 100644 --- a/drivers/gpu/drm/panel/Makefile +++ b/drivers/gpu/drm/panel/Makefile @@ -50,6 +50,7 @@ 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-$(CONFIG_DRM_PANEL_NOVATEK_NT37801) += panel-novatek-nt37801.o obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o obj-$(CONFIG_DRM_PANEL_MANTIX_MLAF057WE51) += panel-mantix-mlaf057we51.o obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o diff --git a/drivers/gpu/drm/panel/panel-novatek-nt37801.c b/drivers/gpu/drm/panel/panel-novatek-nt37801.c new file mode 100644 index 0000000000000000000000000000000000000000..84d367eab058bdddf5a40feb6a75f29ec62dd9f2 --- /dev/null +++ b/drivers/gpu/drm/panel/panel-novatek-nt37801.c @@ -0,0 +1,340 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (c) 2024 Linaro Limited + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/regulator/consumer.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> + +#include <drm/display/drm_dsc.h> +#include <drm/display/drm_dsc_helper.h> +#include <drm/drm_mipi_dsi.h> +#include <drm/drm_modes.h> +#include <drm/drm_panel.h> +#include <drm/drm_probe_helper.h> + +#include <video/mipi_display.h> + +struct novatek_nt37801 { + struct drm_panel panel; + struct mipi_dsi_device *dsi; + struct drm_dsc_config dsc; + struct gpio_desc *reset_gpio; + struct regulator_bulk_data *supplies; +}; + +static const struct regulator_bulk_data novatek_nt37801_supplies[] = { + { .supply = "vddio" }, + { .supply = "vci" }, + { .supply = "vdd" }, +}; + +static inline struct novatek_nt37801 *to_novatek_nt37801(struct drm_panel *panel) +{ + return container_of(panel, struct novatek_nt37801, panel); +} + +static void novatek_nt37801_reset(struct novatek_nt37801 *ctx) +{ + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 21000); + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + usleep_range(10000, 21000); + gpiod_set_value_cansleep(ctx->reset_gpio, 0); + usleep_range(10000, 21000); +} + +#define NT37801_DCS_SWITCH_PAGE 0xf0 + +#define novatek_nt37801_switch_page(dsi_ctx, page) \ + mipi_dsi_dcs_write_seq_multi((dsi_ctx), NT37801_DCS_SWITCH_PAGE, \ + 0x55, 0xaa, 0x52, 0x08, (page)) + +static int novatek_nt37801_on(struct novatek_nt37801 *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; + + dsi->mode_flags |= MIPI_DSI_MODE_LPM; + + novatek_nt37801_switch_page(&dsi_ctx, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc5, 0x0b, 0x0b, 0x0b); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x80); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x02); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf5, 0x10); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1b); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4, 0x55); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x18); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x19); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0f); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0x00); + mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x059f); + mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x0c7f); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x03, 0x03); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x91, + 0x89, 0x28, 0x00, 0x28, 0xc2, 0x00, 0x02, + 0x68, 0x04, 0x6c, 0x00, 0x0a, 0x02, 0x77, + 0x01, 0xe9, 0x10, 0xf0); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x81); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x23); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfb, + 0x00, 0x01, 0x00, 0x11, 0x33, 0x33, 0x33, + 0x55, 0x57, 0xd0, 0x00, 0x00, 0x44, 0x56, + 0x77, 0x78, 0x9a, 0xbc, 0xdd, 0xf0); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x06); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf3, 0xdc); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_GAMMA_CURVE, 0x00); + mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3b, 0x00, 0x18, 0x00, 0x10); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, + 0x20); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x51, + 0x07, 0xff, 0x07, 0xff, 0x0f, 0xff); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5a, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5f, 0x00); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x9c, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2f, 0x00); + + novatek_nt37801_switch_page(&dsi_ctx, 0x01); + mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb2, 0x55, 0x01, 0xff, 0x03); + mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 120); + mipi_dsi_dcs_set_display_on_multi(&dsi_ctx); + mipi_dsi_msleep(&dsi_ctx, 20); + + return dsi_ctx.accum_err; +} + +static int novatek_nt37801_off(struct novatek_nt37801 *ctx) +{ + struct mipi_dsi_device *dsi = ctx->dsi; + struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi }; + + dsi->mode_flags &= ~MIPI_DSI_MODE_LPM; + + 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 novatek_nt37801_prepare(struct drm_panel *panel) +{ + struct novatek_nt37801 *ctx = to_novatek_nt37801(panel); + struct device *dev = &ctx->dsi->dev; + struct drm_dsc_picture_parameter_set pps; + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(novatek_nt37801_supplies), + ctx->supplies); + if (ret < 0) + return ret; + + novatek_nt37801_reset(ctx); + + ret = novatek_nt37801_on(ctx); + if (ret < 0) + goto err; + + drm_dsc_pps_payload_pack(&pps, &ctx->dsc); + + ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps); + if (ret < 0) { + dev_err(panel->dev, "failed to transmit PPS: %d\n", ret); + goto err; + } + + ret = mipi_dsi_compression_mode(ctx->dsi, true); + if (ret < 0) { + dev_err(dev, "failed to enable compression mode: %d\n", ret); + goto err; + } + + msleep(28); + + return 0; + +err: + gpiod_set_value_cansleep(ctx->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(novatek_nt37801_supplies), + ctx->supplies); + + return ret; +} + +static int novatek_nt37801_unprepare(struct drm_panel *panel) +{ + struct novatek_nt37801 *ctx = to_novatek_nt37801(panel); + struct device *dev = &ctx->dsi->dev; + int ret; + + ret = novatek_nt37801_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(novatek_nt37801_supplies), + ctx->supplies); + + return 0; +} + +static const struct drm_display_mode novatek_nt37801_mode = { + .clock = (1440 + 20 + 4 + 20) * (3200 + 20 + 2 + 18) * 120 / 1000, + .hdisplay = 1440, + .hsync_start = 1440 + 20, + .hsync_end = 1440 + 20 + 4, + .htotal = 1440 + 20 + 4 + 20, + .vdisplay = 3200, + .vsync_start = 3200 + 20, + .vsync_end = 3200 + 20 + 2, + .vtotal = 3200 + 20 + 2 + 18, + .type = DRM_MODE_TYPE_DRIVER, +}; + +static int novatek_nt37801_get_modes(struct drm_panel *panel, + struct drm_connector *connector) +{ + return drm_connector_helper_get_modes_fixed(connector, + &novatek_nt37801_mode); +} + +static const struct drm_panel_funcs novatek_nt37801_panel_funcs = { + .prepare = novatek_nt37801_prepare, + .unprepare = novatek_nt37801_unprepare, + .get_modes = novatek_nt37801_get_modes, +}; + +static int novatek_nt37801_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 const struct backlight_ops novatek_nt37801_bl_ops = { + .update_status = novatek_nt37801_bl_update_status, +}; + +static struct backlight_device * +novatek_nt37801_create_backlight(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + const struct backlight_properties props = { + .type = BACKLIGHT_RAW, + .brightness = 4095, + .max_brightness = 4095, + }; + + return devm_backlight_device_register(dev, dev_name(dev), dev, dsi, + &novatek_nt37801_bl_ops, &props); +} + +static int novatek_nt37801_probe(struct mipi_dsi_device *dsi) +{ + struct device *dev = &dsi->dev; + struct novatek_nt37801 *ctx; + int ret; + + ctx = devm_drm_panel_alloc(dev, struct novatek_nt37801, panel, + &novatek_nt37801_panel_funcs, + DRM_MODE_CONNECTOR_DSI); + if (!ctx) + return -ENOMEM; + + ret = devm_regulator_bulk_get_const(dev, + ARRAY_SIZE(novatek_nt37801_supplies), + novatek_nt37801_supplies, + &ctx->supplies); + if (ret < 0) + return ret; + + ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); + 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_NO_EOT_PACKET | MIPI_DSI_CLOCK_NON_CONTINUOUS; + + ctx->panel.prepare_prev_first = true; + ctx->panel.backlight = novatek_nt37801_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); + + /* This panel only supports DSC; unconditionally enable it */ + dsi->dsc = &ctx->dsc; + ctx->dsc.dsc_version_major = 1; + ctx->dsc.dsc_version_minor = 1; + ctx->dsc.slice_height = 40; + ctx->dsc.slice_width = 720; + ctx->dsc.slice_count = 1440 / ctx->dsc.slice_width; + ctx->dsc.bits_per_component = 8; + ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */ + ctx->dsc.block_pred_enable = true; + + 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 novatek_nt37801_remove(struct mipi_dsi_device *dsi) +{ + struct novatek_nt37801 *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 novatek_nt37801_of_match[] = { + { .compatible = "novatek,nt37801" }, + {} +}; +MODULE_DEVICE_TABLE(of, novatek_nt37801_of_match); + +static struct mipi_dsi_driver novatek_nt37801_driver = { + .probe = novatek_nt37801_probe, + .remove = novatek_nt37801_remove, + .driver = { + .name = "panel-novatek-nt37801", + .of_match_table = novatek_nt37801_of_match, + }, +}; +module_mipi_dsi_driver(novatek_nt37801_driver); + +MODULE_AUTHOR("Krzysztof Kozlowski <krzysztof.kozlow...@linaro.org>"); +MODULE_DESCRIPTION("Panel driver for the Novatek NT37801/NT37810 AMOLED DSI panel"); +MODULE_LICENSE("GPL"); -- 2.45.2
