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armbian-build/patch/kernel/archive/sm8550-6.18/0003-drm-panel-Add-panel-driver-for-Chipone-ICNA3512-base.patch
Alex Ling b9b5fb8b0c sm8550: Add patches for 6.18 
Signed-off-by: Alex Ling <ling_kasim@hotmail.com>
2026-01-25 11:35:47 +01:00

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From e795cc2b164408cc92c11f96be268a689c7b4c1a Mon Sep 17 00:00:00 2001
From: Teguh Sobirin <teguh@sobir.in>
Date: Thu, 13 Feb 2025 18:25:19 +0800
Subject: [PATCH 03/18] drm/panel: Add panel driver for Chipone ICNA3512 based
panels
Signed-off-by: Teguh Sobirin <teguh@sobir.in>
---
drivers/gpu/drm/panel/Kconfig | 11 +
drivers/gpu/drm/panel/Makefile | 1 +
.../gpu/drm/panel/panel-chipone-icna3512.c | 473 ++++++++++++++++++
include/drm/drm_mipi_dsi.h | 22 +
4 files changed, 507 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-chipone-icna3512.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 407c5f6a2..d8cf15b0b 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -105,6 +105,17 @@ config DRM_PANEL_BOE_TV101WUM_LL2
Say Y here if you want to support for BOE TV101WUM-LL2
WUXGA PANEL DSI Video Mode panel
+config DRM_PANEL_CHIPONE_ICNA3512
+ tristate "Chipone ICNA3512 panel driver"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select DRM_DISPLAY_HELPER
+ help
+ Say Y here if you want to enable support for the panels built
+ around the Chipone ICNA3512 display controller, such as some
+ Tianma panels used in AYN Odin2 Portal.
+
config DRM_PANEL_EBBG_FT8719
tristate "EBBG FT8719 panel driver"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 3615a761b..171843de9 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_DRM_PANEL_BOE_TD4320) += panel-boe-td4320.o
obj-$(CONFIG_DRM_PANEL_BOE_TH101MB31UIG002_28A) += panel-boe-th101mb31ig002-28a.o
obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_LL2) += panel-boe-tv101wum-ll2.o
obj-$(CONFIG_DRM_PANEL_BOE_TV101WUM_NL6) += panel-boe-tv101wum-nl6.o
+obj-$(CONFIG_DRM_PANEL_CHIPONE_ICNA3512) += panel-chipone-icna3512.o
obj-$(CONFIG_DRM_PANEL_DSI_CM) += panel-dsi-cm.o
obj-$(CONFIG_DRM_PANEL_LVDS) += panel-lvds.o
obj-$(CONFIG_DRM_PANEL_SIMPLE) += panel-simple.o
diff --git a/drivers/gpu/drm/panel/panel-chipone-icna3512.c b/drivers/gpu/drm/panel/panel-chipone-icna3512.c
new file mode 100644
index 000000000..cbda976df
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-chipone-icna3512.c
@@ -0,0 +1,473 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Chipone ICNA3512 Driver IC panels driver
+ *
+ * Copyright (c) 2025 Teguh Sobirin <teguh@sobir.in>
+ */
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.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_connector.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_modes.h>
+#include <drm/drm_panel.h>
+
+struct panel_info {
+ struct drm_panel panel;
+ struct drm_connector *connector;
+ struct mipi_dsi_device *dsi;
+ struct panel_desc *desc;
+ enum drm_panel_orientation orientation;
+
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data supplies[3];
+};
+
+struct panel_desc {
+ unsigned int width_mm;
+ unsigned int height_mm;
+
+ unsigned int bpc;
+ unsigned int lanes;
+ unsigned long mode_flags;
+ enum mipi_dsi_pixel_format format;
+
+ const struct drm_display_mode *modes;
+ unsigned int num_modes;
+ int (*init_sequence)(struct panel_info *pinfo);
+
+ struct drm_dsc_config dsc;
+};
+
+static inline struct panel_info *to_panel_info(struct drm_panel *panel)
+{
+ return container_of(panel, struct panel_info, panel);
+}
+
+static int icna3512_get_current_mode(struct panel_info *pinfo)
+{
+ struct drm_connector *connector = pinfo->connector;
+ struct drm_crtc_state *crtc_state;
+ int i;
+
+ /* Return the default (first) mode if no info available yet */
+ if (!connector->state || !connector->state->crtc)
+ return 0;
+
+ crtc_state = connector->state->crtc->state;
+
+ for (i = 0; i < pinfo->desc->num_modes; i++) {
+ if (drm_mode_match(&crtc_state->mode,
+ &pinfo->desc->modes[i],
+ DRM_MODE_MATCH_TIMINGS | DRM_MODE_MATCH_CLOCK))
+ return i;
+ }
+
+ return 0;
+}
+
+static int icna3512_init_sequence(struct panel_info *pinfo)
+{
+ struct mipi_dsi_device *dsi = pinfo->dsi;
+ struct device *dev = &dsi->dev;
+ int ret;
+
+ int cur_mode = icna3512_get_current_mode(pinfo);
+ int cur_vrefresh = drm_mode_vrefresh(&pinfo->desc->modes[cur_mode]);
+
+ mipi_dsi_dcs_write_seq(dsi, 0x9F, 0x01);
+ if (cur_vrefresh == 120) {
+
+ mipi_dsi_dcs_write_seq(dsi, 0xB3,
+ 0x00, 0xE0, 0xA0, 0x10, 0xC8, 0x00, 0x02, 0x83,
+ 0x00, 0x10, 0x14, 0x00, 0x00, 0xC3, 0x00, 0x10,
+ 0x14, 0x00, 0x00, 0xE0, 0x10, 0x10, 0x9C, 0x00,
+ 0x00, 0xE0, 0xA0, 0x10, 0xC8, 0x22, 0x18, 0x18,
+ 0x18, 0x18, 0x18);
+ mipi_dsi_dcs_write_seq(dsi, 0x9F, 0x07);
+ mipi_dsi_dcs_write_seq(dsi, 0xB5,
+ 0x04, 0x0C, 0x08, 0x0C, 0x04, 0x00, 0xC4);
+ mipi_dsi_dcs_write_seq(dsi, 0xD9,
+ 0x88, 0x40, 0x40, 0x88, 0x40, 0x40, 0x00, 0xEB,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xCE,
+ 0x01, 0x01, 0x01, 0x01, 0x04, 0x09, 0x2C);
+ mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0x48, 0x30);
+ }
+ else {
+ mipi_dsi_dcs_write_seq(dsi, 0xB3,
+ 0x00, 0xE0, 0xA0, 0x10, 0xC8, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0x9F, 0x07);
+ mipi_dsi_dcs_write_seq(dsi, 0xB2,
+ 0x04, 0x18, 0x08, 0x0C, 0x02, 0x00, 0xC4);
+ mipi_dsi_dcs_write_seq(dsi, 0xD3,
+ 0x88, 0x4A, 0x4A, 0x88, 0x4A, 0x4A, 0x00, 0xEB,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0xCB,
+ 0x01, 0x01, 0x01, 0x01, 0x04, 0x09, 0x2C);
+ mipi_dsi_dcs_write_seq(dsi, 0x48, 0x30);
+ mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);
+ }
+
+ mipi_dsi_dcs_write_seq(dsi, 0x9C, 0xA5, 0xA5);
+ mipi_dsi_dcs_write_seq(dsi, 0xFD, 0x5A, 0x5A);
+ mipi_dsi_dcs_write_seq(dsi, 0x48, 0x00);
+ mipi_dsi_dcs_write_seq(dsi, 0x53, 0xE0);
+ mipi_dsi_dcs_write_seq(dsi, 0x35, 0x00);
+
+ ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
+ if (ret < 0) {
+ dev_err(dev, "failed to exit sleep mode: %d\n", ret);
+ return ret;
+ }
+
+ mipi_dsi_dcs_write_seq(dsi, 0x51, 0x0D, 0xBB);
+ mipi_dsi_dcs_write_seq(dsi, 0x9F, 0x0F);
+ mipi_dsi_dcs_write_seq(dsi, 0xCE, 0x22);
+
+ msleep(120);
+
+ ret = mipi_dsi_dcs_set_display_on(dsi);
+ if (ret < 0) {
+ dev_err(dev, "failed to set display on: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct drm_display_mode icna3512_modes[] = {
+ {
+ /* 120Hz */
+ .clock = (1080 + 156 + 1 + 23) * (1920 + 412 + 1 + 15) * 120 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 156,
+ .hsync_end = 1080 + 156 + 1,
+ .htotal = 1080 + 156 + 1 + 23,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 412,
+ .vsync_end = 1920 + 412 + 1,
+ .vtotal = 1920 + 412 + 1 + 15,
+ },
+ {
+ /* 60Hz */
+ .clock = (1080 + 156 + 1 + 23) * (1920 + 2760 + 1 + 15) * 60 / 1000,
+ .hdisplay = 1080,
+ .hsync_start = 1080 + 156,
+ .hsync_end = 1080 + 156 + 1,
+ .htotal = 1080 + 156 + 1 + 23,
+ .vdisplay = 1920,
+ .vsync_start = 1920 + 2760,
+ .vsync_end = 1920 + 2760 + 1,
+ .vtotal = 1920 + 2760 + 1 + 15,
+ }
+};
+
+static struct panel_desc icna3512_desc = {
+ .modes = icna3512_modes,
+ .num_modes = ARRAY_SIZE(icna3512_modes),
+ .width_mm = 160,
+ .height_mm = 89,
+ .bpc = 8,
+ .lanes = 4,
+ .format = MIPI_DSI_FMT_RGB888,
+ .mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM,
+ .init_sequence = icna3512_init_sequence,
+ .dsc = {
+ .dsc_version_major = 0x1,
+ .dsc_version_minor = 0x1,
+ .slice_height = 20,
+ .slice_width = 540,
+ .slice_count = 2,
+ .bits_per_component = 8,
+ .bits_per_pixel = 8 << 4,
+ .block_pred_enable = true,
+ },
+};
+
+static void icna3512_reset(struct panel_info *pinfo)
+{
+ gpiod_set_value_cansleep(pinfo->reset_gpio, 0);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(pinfo->reset_gpio, 1);
+ usleep_range(10000, 11000);
+ gpiod_set_value_cansleep(pinfo->reset_gpio, 0);
+ usleep_range(10000, 11000);
+}
+
+static int icna3512_prepare(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ struct drm_dsc_picture_parameter_set pps;
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(pinfo->supplies), pinfo->supplies);
+ if (ret < 0) {
+ dev_err(panel->dev, "failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ icna3512_reset(pinfo);
+
+ ret = pinfo->desc->init_sequence(pinfo);
+ if (ret < 0) {
+ regulator_bulk_disable(ARRAY_SIZE(pinfo->supplies), pinfo->supplies);
+ dev_err(panel->dev, "failed to initialize panel: %d\n", ret);
+ return ret;
+ }
+
+ drm_dsc_pps_payload_pack(&pps, &pinfo->desc->dsc);
+
+ ret = mipi_dsi_picture_parameter_set(pinfo->dsi, &pps);
+ if (ret < 0) {
+ dev_err(panel->dev, "failed to transmit PPS: %d\n", ret);
+ return ret;
+ }
+
+ /* Not required, ICNA3512 has DSC always enabled. */
+ ret = mipi_dsi_compression_mode(pinfo->dsi, true);
+ if (ret < 0) {
+ dev_err(panel->dev, "failed to enable compression mode: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int icna3512_disable(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_off(pinfo->dsi);
+ if (ret < 0)
+ dev_err(&pinfo->dsi->dev, "failed to set display off: %d\n", ret);
+
+ msleep(50);
+
+ ret = mipi_dsi_dcs_enter_sleep_mode(pinfo->dsi);
+ if (ret < 0)
+ dev_err(&pinfo->dsi->dev, "failed to enter sleep mode: %d\n", ret);
+
+ msleep(120);
+
+ return 0;
+}
+
+static int icna3512_unprepare(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+
+ gpiod_set_value_cansleep(pinfo->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(pinfo->supplies), pinfo->supplies);
+
+ return 0;
+}
+
+static void icna3512_remove(struct mipi_dsi_device *dsi)
+{
+ struct panel_info *pinfo = mipi_dsi_get_drvdata(dsi);
+ int ret;
+
+ ret = mipi_dsi_detach(pinfo->dsi);
+ if (ret < 0)
+ dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
+
+ drm_panel_remove(&pinfo->panel);
+}
+
+static int icna3512_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+ int i;
+
+ for (i = 0; i < pinfo->desc->num_modes; i++) {
+ const struct drm_display_mode *m = &pinfo->desc->modes[i];
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, m);
+ if (!mode) {
+ dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
+ m->hdisplay, m->vdisplay, drm_mode_vrefresh(m));
+ return -ENOMEM;
+ }
+
+ mode->type = DRM_MODE_TYPE_DRIVER;
+ if (i == 0)
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+ }
+
+ connector->display_info.width_mm = pinfo->desc->width_mm;
+ connector->display_info.height_mm = pinfo->desc->height_mm;
+ connector->display_info.bpc = pinfo->desc->bpc;
+ pinfo->connector = connector;
+
+ return pinfo->desc->num_modes;
+}
+
+static enum drm_panel_orientation icna3512_get_orientation(struct drm_panel *panel)
+{
+ struct panel_info *pinfo = to_panel_info(panel);
+
+ return pinfo->orientation;
+}
+
+static const struct drm_panel_funcs icna3512_panel_funcs = {
+ .disable = icna3512_disable,
+ .prepare = icna3512_prepare,
+ .unprepare = icna3512_unprepare,
+ .get_modes = icna3512_get_modes,
+ .get_orientation = icna3512_get_orientation,
+};
+
+static int icna3512_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 int icna3512_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 icna3512_bl_ops = {
+ .update_status = icna3512_bl_update_status,
+ .get_brightness = icna3512_bl_get_brightness,
+};
+
+static struct backlight_device *icna3512_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 4096,
+ .max_brightness = 4096,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &icna3512_bl_ops, &props);
+}
+
+static int icna3512_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct panel_info *pinfo;
+ int ret;
+
+ pinfo = devm_kzalloc(dev, sizeof(*pinfo), GFP_KERNEL);
+ if (!pinfo)
+ return -ENOMEM;
+
+ pinfo->supplies[0].supply = "blvdd";
+ pinfo->supplies[1].supply = "iovdd";
+ pinfo->supplies[2].supply = "vdd";
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(pinfo->supplies),
+ pinfo->supplies);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "failed to get regulators\n");
+
+ pinfo->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(pinfo->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(pinfo->reset_gpio), "failed to get reset gpio\n");
+
+ pinfo->desc = (struct panel_desc *)of_device_get_match_data(dev);
+ if (!pinfo->desc)
+ return -ENODEV;
+
+ pinfo->dsi = dsi;
+ mipi_dsi_set_drvdata(dsi, pinfo);
+ drm_panel_init(&pinfo->panel, dev, &icna3512_panel_funcs, DRM_MODE_CONNECTOR_DSI);
+
+ ret = of_drm_get_panel_orientation(dev->of_node, &pinfo->orientation);
+ if (ret < 0) {
+ dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, ret);
+ return ret;
+ }
+
+ pinfo->panel.prepare_prev_first = true;
+
+ pinfo->panel.backlight = icna3512_create_backlight(dsi);
+ if (IS_ERR(pinfo->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(pinfo->panel.backlight),
+ "Failed to create backlight\n");
+
+ drm_panel_add(&pinfo->panel);
+
+ pinfo->dsi->lanes = pinfo->desc->lanes;
+ pinfo->dsi->format = pinfo->desc->format;
+ pinfo->dsi->mode_flags = pinfo->desc->mode_flags;
+ pinfo->dsi->dsc = &pinfo->desc->dsc;
+
+ ret = mipi_dsi_attach(pinfo->dsi);
+ if (ret < 0){
+ dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+ drm_panel_remove(&pinfo->panel);
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct of_device_id icna3512_of_match[] = {
+ {
+ .compatible = "chipone,icna3512",
+ .data = &icna3512_desc,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, icna3512_of_match);
+
+static struct mipi_dsi_driver icna3512_driver = {
+ .probe = icna3512_probe,
+ .remove = icna3512_remove,
+ .driver = {
+ .name = "panel-chipone-icna3512",
+ .of_match_table = icna3512_of_match,
+ },
+};
+module_mipi_dsi_driver(icna3512_driver);
+
+MODULE_AUTHOR("Teguh Sobirin <teguh@sobir.in>");
+MODULE_DESCRIPTION("DRM driver for Chipone ICNA3512 based MIPI DSI panels");
+MODULE_LICENSE("GPL");
\ No newline at end of file
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 3aba7b380..979bd874a 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -421,6 +421,28 @@ void mipi_dsi_dcs_set_tear_off_multi(struct mipi_dsi_multi_context *ctx);
mipi_dsi_generic_write_multi(ctx, d, ARRAY_SIZE(d)); \
} while (0)
+/**
+ * mipi_dsi_dcs_write_seq - transmit a DCS command with payload
+ *
+ * This macro will print errors for you and will RETURN FROM THE CALLING
+ * FUNCTION (yes this is non-intuitive) upon error.
+ *
+ * Because of the non-intuitive return behavior, THIS MACRO IS DEPRECATED.
+ * Please replace calls of it with mipi_dsi_dcs_write_seq_multi().
+ *
+ * @dsi: DSI peripheral device
+ * @cmd: Command
+ * @seq: buffer containing data to be transmitted
+ */
+#define mipi_dsi_dcs_write_seq(dsi, cmd, seq...) \
+ do { \
+ static const u8 d[] = { cmd, seq }; \
+ int ret; \
+ ret = mipi_dsi_dcs_write_buffer_chatty(dsi, d, ARRAY_SIZE(d)); \
+ if (ret < 0) \
+ return ret; \
+ } while (0)
+
/**
* mipi_dsi_dcs_write_seq_multi - transmit a DCS command with payload
*
--
2.43.0
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