* [PATCH v2 2/4] drm/panel: Add driver for Novatek NT37705 panel
2026-09-18 14:40 [PATCH v2 0/4] Add Novatek NT37705 panel driver for Fairphone (Gen. 6) Luca Weiss
2026-09-18 14:40 ` [PATCH v2 1/4] dt-bindings: display: panel: Add Novatek NT37705 Luca Weiss
@ 2026-09-18 14:40 ` Luca Weiss
2026-09-18 15:58 ` Uwe Kleine-König
2026-09-18 14:40 ` [PATCH v2 3/4] arm64: defconfig: Enable " Luca Weiss
2026-09-18 14:40 ` [PATCH v2 4/4] arm64: dts: qcom: milos-fairphone-fp6: Enable display Luca Weiss
3 siblings, 1 reply; 7+ messages in thread
From: Luca Weiss @ 2026-09-18 14:40 UTC (permalink / raw)
To: Neil Armstrong, Jessica Zhang, Maarten Lankhorst, Maxime Ripard,
Thomas Zimmermann, David Airlie, Simona Vetter, Rob Herring,
Krzysztof Kozlowski, Conor Dooley, Bjorn Andersson,
Konrad Dybcio
Cc: ~postmarketos/upstreaming, phone-devel, dri-devel, devicetree,
linux-kernel, linux-arm-msm, Luca Weiss
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>
---
drivers/gpu/drm/panel/Kconfig | 12 +
drivers/gpu/drm/panel/Makefile | 1 +
drivers/gpu/drm/panel/panel-novatek-nt37705.c | 413 ++++++++++++++++++++++++++
3 files changed, 426 insertions(+)
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index cbdf7b8f7f7a..be2f812bef76 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -706,6 +706,18 @@ config DRM_PANEL_NOVATEK_NT37700F
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_NT37705
+ tristate "Novatek NT37705-based DSI panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select DRM_DISPLAY_DSC_HELPER
+ select DRM_DISPLAY_HELPER
+ help
+ Say Y here if you want to enable support for Novatek NT37705-based
+ display panels, such as the one found in the Fairphone (Gen. 6)
+ smartphone.
+
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 3b523cf37833..e1366b5e25fc 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_DRM_PANEL_NOVATEK_NT36536) += panel-novatek-nt36536.o
obj-$(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-$(CONFIG_DRM_PANEL_NOVATEK_NT37705) += panel-novatek-nt37705.o
obj-$(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-nt37705.c b/drivers/gpu/drm/panel/panel-novatek-nt37705.c
new file mode 100644
index 000000000000..27bd8072ccd1
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-novatek-nt37705.c
@@ -0,0 +1,413 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree.
+ * Copyright (c) 2026 Luca Weiss <luca.weiss@fairphone.com>
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+
+#include <video/mipi_display.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>
+
+struct nt37705_panel {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct drm_dsc_config dsc;
+ struct regulator_bulk_data *supplies;
+ struct gpio_desc *reset_gpio;
+};
+
+static const struct regulator_bulk_data nt37705_supplies[] = {
+ { .supply = "vddio" },
+ { .supply = "dvdd" },
+ { .supply = "vci" },
+};
+
+static inline struct nt37705_panel *to_nt37705_panel(struct drm_panel *panel)
+{
+ return container_of_const(panel, struct nt37705_panel, panel);
+}
+
+static void nt37705_reset(struct nt37705_panel *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(5000, 6000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ usleep_range(10000, 11000);
+}
+
+static int nt37705_on(struct nt37705_panel *ctx)
+{
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+
+ ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
+ 0x55, 0xaa, 0x52, 0x08, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1b);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba, 0x18);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x2c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x00, 0x01, 0x01, 0x01, 0x00, 0x05, 0x05,
+ 0x05, 0x00, 0x05, 0x05, 0x05, 0x00, 0x00,
+ 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x3c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x0b,
+ 0x0b, 0x00, 0x00, 0x0b, 0x0b, 0x00, 0x00,
+ 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x4c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
+ 0x1d, 0x00, 0x00, 0x00, 0x1d, 0x00, 0x00,
+ 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x5c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x6c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x0b,
+ 0x77, 0x77, 0x00, 0x00, 0x0b, 0x00, 0x1d,
+ 0x00, 0x1d);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x7c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x0b,
+ 0x77, 0x77, 0x00, 0x00, 0x0b, 0x00, 0x1d,
+ 0x00, 0x1d);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x8c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x9c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x11, 0x11, 0x20, 0x02, 0x00, 0x03, 0x00,
+ 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0xa4);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba, 0x00, 0xc0, 0x40, 0x08);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0xa8);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+ 0x22);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0xb0);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xba,
+ 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22,
+ 0x22);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
+ 0x55, 0xaa, 0x52, 0x08, 0x01);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x05);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xc5, 0x15, 0x15, 0x15, 0xdd);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
+ 0x55, 0xaa, 0x52, 0x08, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0e);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb5, 0x32);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf0,
+ 0x55, 0xaa, 0x52, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x80);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x19);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf2, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1a);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf4, 0x55);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x11);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x01, 0x7f);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x2d);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf8, 0x01, 0x20);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x81);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x05);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x3c);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x02);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf9, 0x04);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x1e);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfb, 0x0f);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0f);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xf5, 0x20);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x0d);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfb, 0x80);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x83);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x12);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfe, 0x41);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x13);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xfd, 0x21);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xff, 0xaa, 0x55, 0xa5, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x35);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY,
+ 0x20);
+ mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x045b);
+ mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x09b3);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_GAMMA_CURVE, 0x00);
+ mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0xbb0d);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6f, 0x04);
+ mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0xfe0f);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x81, 0x01, 0x19);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x03, 0x01);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x90, 0x03, 0x03);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x91,
+ 0x89, 0x28, 0x00, 0x0c, 0xd2, 0x00, 0x02,
+ 0x2f, 0x01, 0x18, 0x00, 0x07, 0x09, 0x75,
+ 0x08, 0x34, 0x10, 0xf0);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2f, 0x02);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x5a, 0x01);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x2f, 0x30);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x6d, 0x00);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x00);
+ mipi_dsi_msleep(&dsi_ctx, 120);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x00);
+ mipi_dsi_msleep(&dsi_ctx, 22);
+
+ return dsi_ctx.accum_err;
+}
+
+static int nt37705_off(struct nt37705_panel *ctx)
+{
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+
+ ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x28, 0x00);
+ mipi_dsi_msleep(&dsi_ctx, 20);
+ mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x10, 0x00);
+ mipi_dsi_msleep(&dsi_ctx, 120);
+
+ return dsi_ctx.accum_err;
+}
+
+static int nt37705_prepare(struct drm_panel *panel)
+{
+ struct nt37705_panel *ctx = to_nt37705_panel(panel);
+ struct device *dev = &ctx->dsi->dev;
+ struct drm_dsc_picture_parameter_set pps;
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(nt37705_supplies), ctx->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ nt37705_reset(ctx);
+
+ ret = nt37705_on(ctx);
+ if (ret < 0) {
+ dev_err(dev, "Failed to initialize panel: %d\n", ret);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(nt37705_supplies), ctx->supplies);
+ return ret;
+ }
+
+ 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);
+ return ret;
+ }
+
+ ret = mipi_dsi_compression_mode(ctx->dsi, true);
+ if (ret < 0) {
+ dev_err(dev, "failed to enable compression mode: %d\n", ret);
+ return ret;
+ }
+
+ msleep(28); /* TODO: Is this panel-dependent? */
+
+ return 0;
+}
+
+static int nt37705_unprepare(struct drm_panel *panel)
+{
+ struct nt37705_panel *ctx = to_nt37705_panel(panel);
+ struct device *dev = &ctx->dsi->dev;
+ int ret;
+
+ ret = nt37705_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(nt37705_supplies), ctx->supplies);
+
+ return 0;
+}
+
+static const struct drm_display_mode nt37705_mode = {
+ .clock = (1116 + 100 + 30 + 100) * (2484 + 70 + 48 + 70) * 120 / 1000,
+ .hdisplay = 1116,
+ .hsync_start = 1116 + 100,
+ .hsync_end = 1116 + 100 + 30,
+ .htotal = 1116 + 100 + 30 + 100,
+ .vdisplay = 2484,
+ .vsync_start = 2484 + 70,
+ .vsync_end = 2484 + 70 + 48,
+ .vtotal = 2484 + 70 + 48 + 70,
+ .width_mm = 66,
+ .height_mm = 146,
+ .type = DRM_MODE_TYPE_DRIVER,
+};
+
+static int nt37705_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ return drm_connector_helper_get_modes_fixed(connector, &nt37705_mode);
+}
+
+static const struct drm_panel_funcs nt37705_panel_funcs = {
+ .prepare = nt37705_prepare,
+ .unprepare = nt37705_unprepare,
+ .get_modes = nt37705_get_modes,
+};
+
+static int nt37705_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 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");
--
2.55.0
^ permalink raw reply [flat|nested] 7+ messages in thread