FROMLIST v1 drm/panel: Add driver for Novatek NT37705 panel
Add support for the 2484x1116 AMOLED panel from BOE (BJ631JHM-T71-D900) bundled with a NT37705 driver IC, as found on the Fairphone (Gen. 6) smartphone. The panel can also be configured in 10-bit (RGB101010) mode, however currently it's configured in 8-bit (RGB888) since there's some issues in the Qualcomm DPU driver when driving this panel in 10-bit. Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
This commit is contained in:
Luca Weiss
parent
3fc0ea7436
commit
66e571e789
3 changed files with 425 additions and 0 deletions
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@ -612,6 +612,17 @@ config DRM_PANEL_NOVATEK_NT37700F
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Say Y here if you want to enable support for Novatek NT37700F DSI
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panel module. The panel has a resolution of 1080x2160.
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config DRM_PANEL_NOVATEK_NT37705
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tristate "Novatek NT37705-based 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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select DRM_KMS_HELPER
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help
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Say Y here if you want to enable support for Novatek NT37705-based
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display panels, such as the one found in the The Fairphone (Gen. 6)
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smartphone.
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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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@ -60,6 +60,7 @@ 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_NT37700F) += panel-novatek-nt37700f.o
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obj-$(CONFIG_DRM_PANEL_NOVATEK_NT37705) += panel-novatek-nt37705.o
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obj-$(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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413
drivers/gpu/drm/panel/panel-novatek-nt37705.c
Normal file
413
drivers/gpu/drm/panel/panel-novatek-nt37705.c
Normal file
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@ -0,0 +1,413 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
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* Copyright (c) 2026 Luca Weiss <luca.weiss@fairphone.com>
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*/
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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/mod_devicetable.h>
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#include <linux/module.h>
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#include <linux/regulator/consumer.h>
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#include <video/mipi_display.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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struct nt37705_panel {
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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 regulator_bulk_data *supplies;
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struct gpio_desc *reset_gpio;
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};
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static const struct regulator_bulk_data nt37705_supplies[] = {
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{ .supply = "vddio" },
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{ .supply = "dvdd" },
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{ .supply = "vci" },
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};
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static inline struct nt37705_panel *to_nt37705_panel(struct drm_panel *panel)
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{
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return container_of_const(panel, struct nt37705_panel, panel);
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}
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static void nt37705_reset(struct nt37705_panel *ctx)
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{
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 1);
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usleep_range(5000, 6000);
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gpiod_set_value_cansleep(ctx->reset_gpio, 0);
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usleep_range(10000, 11000);
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}
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static int nt37705_on(struct nt37705_panel *ctx)
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{
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
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ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
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0x55, 0xaa, 0x52, 0x08, 0x00);
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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, 0xba, 0x18);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x2c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x00, 0x01, 0x01, 0x01, 0x00, 0x05, 0x05,
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0x05, 0x00, 0x05, 0x05, 0x05, 0x00, 0x00,
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0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x3c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x0b,
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0x0b, 0x00, 0x00, 0x0b, 0x0b, 0x00, 0x00,
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0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x4c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
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0x1d, 0x00, 0x00, 0x00, 0x1d, 0x00, 0x00,
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0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x5c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
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0x01, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x6c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x0b,
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0x77, 0x77, 0x00, 0x00, 0x0b, 0x00, 0x1d,
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0x00, 0x1d);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x7c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x0b,
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0x77, 0x77, 0x00, 0x00, 0x0b, 0x00, 0x1d,
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0x00, 0x1d);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x8c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x9c);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x11, 0x11, 0x20, 0x02, 0x00, 0x03, 0x00,
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0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0xa4);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba, 0x00, 0xc0, 0x40, 0x08);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0xa8);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
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0x22);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0xb0);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
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0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
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0x22);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
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0x55, 0xaa, 0x52, 0x08, 0x01);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x05);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc5, 0x15, 0x15, 0x15, 0xdd);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
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0x55, 0xaa, 0x52, 0x08, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0e);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb5, 0x32);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
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0x55, 0xaa, 0x52, 0x00, 0x00);
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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, 0x19);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf2, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1a);
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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, 0x11);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x01, 0x7f);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x2d);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x01, 0x20);
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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, 0x05);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x3c);
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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, 0xf9, 0x04);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1e);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfb, 0x0f);
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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, 0xf5, 0x20);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0d);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfb, 0x80);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x83);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x12);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x41);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x13);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfd, 0x21);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x35);
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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_set_column_address_multi(&dsi_ctx, 0x0000, 0x045b);
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mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x09b3);
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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_display_brightness_multi(&dsi_ctx, 0xbb0d);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x04);
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mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0xfe0f);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x81, 0x01, 0x19);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x01);
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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, 0x0c, 0xd2, 0x00, 0x02,
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0x2f, 0x01, 0x18, 0x00, 0x07, 0x09, 0x75,
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0x08, 0x34, 0x10, 0xf0);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2f, 0x02);
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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, 0x2f, 0x30);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6d, 0x00);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x00);
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mipi_dsi_msleep(&dsi_ctx, 120);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x00);
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mipi_dsi_msleep(&dsi_ctx, 22);
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return dsi_ctx.accum_err;
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}
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static int nt37705_off(struct nt37705_panel *ctx)
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{
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struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
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ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x28, 0x00);
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mipi_dsi_msleep(&dsi_ctx, 20);
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mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x10, 0x00);
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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 nt37705_prepare(struct drm_panel *panel)
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{
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struct nt37705_panel *ctx = to_nt37705_panel(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(nt37705_supplies), ctx->supplies);
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if (ret < 0) {
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dev_err(dev, "Failed to enable regulators: %d\n", ret);
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return ret;
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}
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nt37705_reset(ctx);
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ret = nt37705_on(ctx);
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if (ret < 0) {
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dev_err(dev, "Failed to 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(nt37705_supplies), ctx->supplies);
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return ret;
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}
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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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return ret;
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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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return ret;
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}
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msleep(28); /* TODO: Is this panel-dependent? */
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return 0;
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}
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static int nt37705_unprepare(struct drm_panel *panel)
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{
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struct nt37705_panel *ctx = to_nt37705_panel(panel);
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struct device *dev = &ctx->dsi->dev;
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int ret;
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ret = nt37705_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(nt37705_supplies), ctx->supplies);
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return 0;
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}
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static const struct drm_display_mode nt37705_mode = {
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.clock = (1116 + 100 + 30 + 100) * (2484 + 70 + 48 + 70) * 120 / 1000,
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.hdisplay = 1116,
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.hsync_start = 1116 + 100,
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.hsync_end = 1116 + 100 + 30,
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.htotal = 1116 + 100 + 30 + 100,
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.vdisplay = 2484,
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.vsync_start = 2484 + 70,
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.vsync_end = 2484 + 70 + 48,
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.vtotal = 2484 + 70 + 48 + 70,
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.width_mm = 66,
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.height_mm = 146,
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.type = DRM_MODE_TYPE_DRIVER,
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};
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static int nt37705_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, &nt37705_mode);
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}
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static const struct drm_panel_funcs nt37705_panel_funcs = {
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.prepare = nt37705_prepare,
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.unprepare = nt37705_unprepare,
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.get_modes = nt37705_get_modes,
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};
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static int nt37705_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);
|
||||
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 nt37705_bl_ops = {
|
||||
.update_status = nt37705_bl_update_status,
|
||||
};
|
||||
|
||||
static struct backlight_device *
|
||||
nt37705_create_backlight(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct device *dev = &dsi->dev;
|
||||
const struct backlight_properties props = {
|
||||
.type = BACKLIGHT_RAW,
|
||||
.scale = BACKLIGHT_SCALE_NON_LINEAR,
|
||||
.brightness = 4095,
|
||||
.max_brightness = 4095,
|
||||
};
|
||||
|
||||
return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
|
||||
&nt37705_bl_ops, &props);
|
||||
}
|
||||
|
||||
static int nt37705_probe(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct device *dev = &dsi->dev;
|
||||
struct nt37705_panel *ctx;
|
||||
int ret;
|
||||
|
||||
ctx = devm_drm_panel_alloc(dev, struct nt37705_panel, panel,
|
||||
&nt37705_panel_funcs,
|
||||
DRM_MODE_CONNECTOR_DSI);
|
||||
if (IS_ERR(ctx))
|
||||
return PTR_ERR(ctx);
|
||||
|
||||
ret = devm_regulator_bulk_get_const(dev,
|
||||
ARRAY_SIZE(nt37705_supplies),
|
||||
nt37705_supplies,
|
||||
&ctx->supplies);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
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_NO_EOT_PACKET |
|
||||
MIPI_DSI_CLOCK_NON_CONTINUOUS;
|
||||
|
||||
ctx->panel.prepare_prev_first = true;
|
||||
|
||||
ctx->panel.backlight = nt37705_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;
|
||||
|
||||
/* TODO: Pass slice_per_pkt = 2 */
|
||||
ctx->dsc.slice_height = 12;
|
||||
ctx->dsc.slice_width = 558;
|
||||
/*
|
||||
* TODO: hdisplay should be read from the selected mode once
|
||||
* it is passed back to drm_panel (in prepare?)
|
||||
*/
|
||||
WARN_ON(1116 % ctx->dsc.slice_width);
|
||||
ctx->dsc.slice_count = 1116 / 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 nt37705_remove(struct mipi_dsi_device *dsi)
|
||||
{
|
||||
struct nt37705_panel *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 nt37705_of_match[] = {
|
||||
{ .compatible = "boe,bj631jhm-t71-d900" },
|
||||
{ /* sentinel */ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, nt37705_of_match);
|
||||
|
||||
static struct mipi_dsi_driver nt37705_driver = {
|
||||
.probe = nt37705_probe,
|
||||
.remove = nt37705_remove,
|
||||
.driver = {
|
||||
.name = "panel-novatek-nt37705",
|
||||
.of_match_table = nt37705_of_match,
|
||||
},
|
||||
};
|
||||
module_mipi_dsi_driver(nt37705_driver);
|
||||
|
||||
MODULE_DESCRIPTION("DRM driver for NT37705-equipped DSI panels");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Add table
Add a link
Reference in a new issue