armbian-build/patch/kernel/archive/sm8550-6.12/0032_drm-panel--Add-panel-driver-for-Chipone-ICNA3512-b.patch

From aae567ecbda8e1c3a8d4aaebc90914b6ff740785 Mon Sep 17 00:00:00 2001
From: Teguh Sobirin <teguh@sobir.in>
Date: Thu, 13 Feb 2025 18:25:19 +0800
Subject: [PATCH] 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 ++++++++++++++++++
 3 files changed, 485 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 d7469c565d1d..112a7bfcd169 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -96,6 +96,17 @@ 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 7dcf72646cac..8773117908c8 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_DRM_PANEL_BOE_HIMAX8279D) += panel-boe-himax8279d.o
 obj-$(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 000000000000..cbda976df1db
--- /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
-- 
2.34.1