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drm/panel: Add Novatek NT37801 panel driver
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.armstrong@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20250508-sm8750-display-panel-v2-2-3ca072e3d1fa@linaro.org Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20250508-sm8750-display-panel-v2-2-3ca072e3d1fa@linaro.org
This commit is contained in:
Krzysztof Kozlowski
Neil Armstrong
parent
0311e0fd07
commit
4fca684986
4 changed files with 357 additions and 0 deletions
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@ -7574,6 +7574,12 @@ T: git https://gitlab.freedesktop.org/drm/misc/kernel.git
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F: Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml
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F: drivers/gpu/drm/panel/panel-novatek-nt36672a.c
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DRM DRIVER FOR NOVATEK NT37801 PANELS
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M: Krzysztof Kozlowski <krzk@kernel.org>
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S: Maintained
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F: Documentation/devicetree/bindings/display/panel/novatek,nt37801.yaml
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F: drivers/gpu/drm/panel/panel-novatek-nt37801.c
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DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS
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M: Lyude Paul <lyude@redhat.com>
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M: Danilo Krummrich <dakr@kernel.org>
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@ -517,6 +517,16 @@ config DRM_PANEL_NOVATEK_NT36672E
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LCD panel module. The panel has a resolution of 1080x2408 and uses 24 bit
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RGB per pixel.
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config DRM_PANEL_NOVATEK_NT37801
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tristate "Novatek NT37801/NT37810 AMOLED DSI panel"
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depends on OF
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depends on DRM_MIPI_DSI
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depends on BACKLIGHT_CLASS_DEVICE
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help
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Say Y here if you want to enable support for Novatek NT37801 (or
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NT37810) AMOLED DSI Video Mode LCD panel module with 1440x3200
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resolution.
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config DRM_PANEL_NOVATEK_NT39016
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tristate "Novatek NT39016 RGB/SPI panel"
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depends on OF && SPI
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@ -51,6 +51,7 @@ obj-$(CONFIG_DRM_PANEL_NOVATEK_NT35950) += panel-novatek-nt35950.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36523) += panel-novatek-nt36523.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36672A) += panel-novatek-nt36672a.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36672E) += panel-novatek-nt36672e.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT37801) += panel-novatek-nt37801.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT39016) += panel-novatek-nt39016.o
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obj-$(CONFIG_DRM_PANEL_MANTIX_MLAF057WE51) += panel-mantix-mlaf057we51.o
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obj-$(CONFIG_DRM_PANEL_OLIMEX_LCD_OLINUXINO) += panel-olimex-lcd-olinuxino.o
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340
drivers/gpu/drm/panel/panel-novatek-nt37801.c
Normal file
340
drivers/gpu/drm/panel/panel-novatek-nt37801.c
Normal file
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@ -0,0 +1,340 @@
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// SPDX-License-Identifier: GPL-2.0-only
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// Copyright (c) 2024 Linaro Limited
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#include <linux/backlight.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <linux/mod_devicetable.h>
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#include <linux/module.h>
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#include <drm/display/drm_dsc.h>
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#include <drm/display/drm_dsc_helper.h>
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#include <drm/drm_mipi_dsi.h>
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#include <drm/drm_modes.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_probe_helper.h>
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#include <video/mipi_display.h>
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struct novatek_nt37801 {
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struct drm_panel panel;
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struct mipi_dsi_device *dsi;
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struct drm_dsc_config dsc;
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struct gpio_desc *reset_gpio;
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struct regulator_bulk_data *supplies;
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};
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static const struct regulator_bulk_data novatek_nt37801_supplies[] = {
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{ .supply = "vddio" },
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{ .supply = "vci" },
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{ .supply = "vdd" },
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};
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static inline struct novatek_nt37801 *to_novatek_nt37801(struct drm_panel *panel)
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{
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return container_of(panel, struct novatek_nt37801, panel);
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}
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static void novatek_nt37801_reset(struct novatek_nt37801 *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 21000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(10000, 21000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 21000);
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}
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#define NT37801_DCS_SWITCH_PAGE 0xf0
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#define novatek_nt37801_switch_page(dsi_ctx, page) \
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mipi_dsi_dcs_write_seq_multi((dsi_ctx), NT37801_DCS_SWITCH_PAGE, \
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0x55, 0xaa, 0x52, 0x08, (page))
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static int novatek_nt37801_on(struct novatek_nt37801 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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novatek_nt37801_switch_page(&dsi_ctx, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc5, 0x0b, 0x0b, 0x0b);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x80);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x02);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf5, 0x10);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1b);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4, 0x55);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x18);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x19);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0f);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfc, 0x00);
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mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x059f);
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mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x0c7f);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x03, 0x03);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x91,
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0x89, 0x28, 0x00, 0x28, 0xc2, 0x00, 0x02,
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0x68, 0x04, 0x6c, 0x00, 0x0a, 0x02, 0x77,
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0x01, 0xe9, 0x10, 0xf0);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x81);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x23);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfb,
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0x00, 0x01, 0x00, 0x11, 0x33, 0x33, 0x33,
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0x55, 0x57, 0xd0, 0x00, 0x00, 0x44, 0x56,
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0x77, 0x78, 0x9a, 0xbc, 0xdd, 0xf0);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x06);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf3, 0xdc);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_GAMMA_CURVE, 0x00);
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mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x3b, 0x00, 0x18, 0x00, 0x10);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY,
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0x20);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x51,
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0x07, 0xff, 0x07, 0xff, 0x0f, 0xff);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5a, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5f, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x9c, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_MEMORY_START);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2f, 0x00);
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novatek_nt37801_switch_page(&dsi_ctx, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb2, 0x55, 0x01, 0xff, 0x03);
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mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 120);
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mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 20);
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return dsi_ctx.accum_err;
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}
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static int novatek_nt37801_off(struct novatek_nt37801 *ctx)
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{
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struct mipi_dsi_device *dsi = ctx->dsi;
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 20);
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mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
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mipi_dsi_msleep(&dsi_ctx, 120);
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return dsi_ctx.accum_err;
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}
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static int novatek_nt37801_prepare(struct drm_panel *panel)
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{
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struct novatek_nt37801 *ctx = to_novatek_nt37801(panel);
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struct device *dev = &ctx->dsi->dev;
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struct drm_dsc_picture_parameter_set pps;
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int ret;
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ret = regulator_bulk_enable(ARRAY_SIZE(novatek_nt37801_supplies),
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ctx->supplies);
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if (ret < 0)
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return ret;
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novatek_nt37801_reset(ctx);
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ret = novatek_nt37801_on(ctx);
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if (ret < 0)
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goto err;
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drm_dsc_pps_payload_pack(&pps, &ctx->dsc);
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ret = mipi_dsi_picture_parameter_set(ctx->dsi, &pps);
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if (ret < 0) {
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dev_err(panel->dev, "failed to transmit PPS: %d\n", ret);
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goto err;
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}
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ret = mipi_dsi_compression_mode(ctx->dsi, true);
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if (ret < 0) {
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dev_err(dev, "failed to enable compression mode: %d\n", ret);
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goto err;
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}
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msleep(28);
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return 0;
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err:
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(novatek_nt37801_supplies),
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ctx->supplies);
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return ret;
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}
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static int novatek_nt37801_unprepare(struct drm_panel *panel)
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{
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struct novatek_nt37801 *ctx = to_novatek_nt37801(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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ret = novatek_nt37801_off(ctx);
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if (ret < 0)
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dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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regulator_bulk_disable(ARRAY_SIZE(novatek_nt37801_supplies),
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ctx->supplies);
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return 0;
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}
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static const struct drm_display_mode novatek_nt37801_mode = {
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.clock = (1440 + 20 + 4 + 20) * (3200 + 20 + 2 + 18) * 120 / 1000,
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.hdisplay = 1440,
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.hsync_start = 1440 + 20,
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.hsync_end = 1440 + 20 + 4,
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.htotal = 1440 + 20 + 4 + 20,
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.vdisplay = 3200,
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.vsync_start = 3200 + 20,
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.vsync_end = 3200 + 20 + 2,
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.vtotal = 3200 + 20 + 2 + 18,
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.type = DRM_MODE_TYPE_DRIVER,
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};
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static int novatek_nt37801_get_modes(struct drm_panel *panel,
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struct drm_connector *connector)
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{
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return drm_connector_helper_get_modes_fixed(connector,
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&novatek_nt37801_mode);
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}
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static const struct drm_panel_funcs novatek_nt37801_panel_funcs = {
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.prepare = novatek_nt37801_prepare,
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.unprepare = novatek_nt37801_unprepare,
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.get_modes = novatek_nt37801_get_modes,
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};
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static int novatek_nt37801_bl_update_status(struct backlight_device *bl)
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{
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struct mipi_dsi_device *dsi = bl_get_data(bl);
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u16 brightness = backlight_get_brightness(bl);
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int ret;
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dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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ret = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
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if (ret < 0)
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return ret;
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dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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return 0;
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}
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static const struct backlight_ops novatek_nt37801_bl_ops = {
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.update_status = novatek_nt37801_bl_update_status,
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};
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static struct backlight_device *
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novatek_nt37801_create_backlight(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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const struct backlight_properties props = {
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.type = BACKLIGHT_RAW,
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.brightness = 4095,
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.max_brightness = 4095,
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};
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return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
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&novatek_nt37801_bl_ops, &props);
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}
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static int novatek_nt37801_probe(struct mipi_dsi_device *dsi)
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{
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struct device *dev = &dsi->dev;
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struct novatek_nt37801 *ctx;
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int ret;
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ctx = devm_drm_panel_alloc(dev, struct novatek_nt37801, panel,
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&novatek_nt37801_panel_funcs,
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DRM_MODE_CONNECTOR_DSI);
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if (!ctx)
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return -ENOMEM;
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ret = devm_regulator_bulk_get_const(dev,
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ARRAY_SIZE(novatek_nt37801_supplies),
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novatek_nt37801_supplies,
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&ctx->supplies);
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if (ret < 0)
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return ret;
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ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
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if (IS_ERR(ctx->reset_gpio))
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return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
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"Failed to get reset-gpios\n");
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ctx->dsi = dsi;
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mipi_dsi_set_drvdata(dsi, ctx);
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dsi->lanes = 4;
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dsi->format = MIPI_DSI_FMT_RGB888;
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dsi->mode_flags = MIPI_DSI_MODE_NO_EOT_PACKET | MIPI_DSI_CLOCK_NON_CONTINUOUS;
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ctx->panel.prepare_prev_first = true;
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ctx->panel.backlight = novatek_nt37801_create_backlight(dsi);
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if (IS_ERR(ctx->panel.backlight))
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return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
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"Failed to create backlight\n");
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drm_panel_add(&ctx->panel);
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/* This panel only supports DSC; unconditionally enable it */
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dsi->dsc = &ctx->dsc;
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ctx->dsc.dsc_version_major = 1;
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ctx->dsc.dsc_version_minor = 1;
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ctx->dsc.slice_height = 40;
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ctx->dsc.slice_width = 720;
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ctx->dsc.slice_count = 1440 / ctx->dsc.slice_width;
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ctx->dsc.bits_per_component = 8;
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ctx->dsc.bits_per_pixel = 8 << 4; /* 4 fractional bits */
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ctx->dsc.block_pred_enable = true;
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ret = mipi_dsi_attach(dsi);
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if (ret < 0) {
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drm_panel_remove(&ctx->panel);
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return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
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}
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return 0;
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}
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static void novatek_nt37801_remove(struct mipi_dsi_device *dsi)
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{
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struct novatek_nt37801 *ctx = mipi_dsi_get_drvdata(dsi);
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int ret;
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ret = mipi_dsi_detach(dsi);
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if (ret < 0)
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dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
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drm_panel_remove(&ctx->panel);
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||||
}
|
||||
|
||||
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.kozlowski@linaro.org>");
|
||||
MODULE_DESCRIPTION("Panel driver for the Novatek NT37801/NT37810 AMOLED DSI panel");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Add table
Reference in a new issue