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BPI-CM9-Linux/build/patch/kernel/archive/sm8250-6.18/0016-drm-panel-Add-panel-driver-for-samsung-amsa26zp01.patch
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From 39c64936606b9c3eff787195531c4f3b6cde0903 Mon Sep 17 00:00:00 2001
From: chalkin <[email protected]>
Date: Sat, 21 Sep 2024 18:19:35 +0800
Subject: [PATCH 16/62] drm/panel: Add panel driver for samsung amsa26zp01
Signed-off-by: Jiali Chen <[email protected]>
---
drivers/gpu/drm/panel/Kconfig | 11 +
drivers/gpu/drm/panel/Makefile | 1 +
.../gpu/drm/panel/panel-samsung-amsa26zp01.c | 302 ++++++++++++++++++
3 files changed, 314 insertions(+)
create mode 100644 drivers/gpu/drm/panel/panel-samsung-amsa26zp01.c
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
index 09b9f7ff9340..c6f8382b0212 100644
--- a/drivers/gpu/drm/panel/Kconfig
+++ b/drivers/gpu/drm/panel/Kconfig
@@ -726,6 +726,17 @@ config DRM_PANEL_SAMSUNG_S6E88A0_AMS452EF01
select DRM_MIPI_DSI
select VIDEOMODE_HELPERS
+config DRM_PANEL_SAMSUNG_AMSA26ZP01
+ tristate "Samsung AMSA26ZP01 DSI panel"
+ depends on OF
+ depends on DRM_MIPI_DSI
+ depends on BACKLIGHT_CLASS_DEVICE
+ select DRM_DISPLAY_DP_HELPER
+ select DRM_DISPLAY_HELPER
+ help
+ DRM panel driver for the Samsung AMSA26ZP01 panel.
+ This panel has a resolution of 2560x1600 @ 60hz or 120Hz.
+
config DRM_PANEL_SAMSUNG_ATNA33XC20
tristate "Samsung ATNA33XC20 eDP panel"
depends on OF
diff --git a/drivers/gpu/drm/panel/Makefile b/drivers/gpu/drm/panel/Makefile
index 957555b49996..f297fc90f99e 100644
--- a/drivers/gpu/drm/panel/Makefile
+++ b/drivers/gpu/drm/panel/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_DRM_PANEL_RENESAS_R69328) += panel-renesas-r69328.o
obj-$(CONFIG_DRM_PANEL_RONBO_RB070D30) += panel-ronbo-rb070d30.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMS581VF01) += panel-samsung-ams581vf01.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMS639RQ08) += panel-samsung-ams639rq08.o
+obj-$(CONFIG_DRM_PANEL_SAMSUNG_AMSA26ZP01) += panel-samsung-amsa26zp01.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_ATNA33XC20) += panel-samsung-atna33xc20.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_DB7430) += panel-samsung-db7430.o
obj-$(CONFIG_DRM_PANEL_SAMSUNG_LD9040) += panel-samsung-ld9040.o
diff --git a/drivers/gpu/drm/panel/panel-samsung-amsa26zp01.c b/drivers/gpu/drm/panel/panel-samsung-amsa26zp01.c
new file mode 100644
index 000000000000..8fe62ff43909
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-amsa26zp01.c
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0-only
+// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
+// Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
+// Copyright (c) 2024 chalkin Deng <chalkin@[email protected]>
+
+#include <linux/backlight.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.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 samsung_amsa26zp01 {
+ struct drm_panel panel;
+ struct mipi_dsi_device *dsi;
+ struct drm_dsc_config dsc;
+ struct gpio_desc *reset_gpio;
+ struct regulator_bulk_data supplies[2];
+};
+
+static inline
+struct samsung_amsa26zp01 *to_samsung_amsa26zp01(struct drm_panel *panel)
+{
+ return container_of(panel, struct samsung_amsa26zp01, panel);
+}
+
+static void samsung_amsa26zp01_reset(struct samsung_amsa26zp01 *ctx)
+{
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ usleep_range(2000, 3000);
+ gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+ msleep(400);
+}
+
+static void samsung_amsa26zp01_on(struct mipi_dsi_multi_context *dsi_ctx)
+{
+
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xf0, 0x5a, 0x5a);
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xf1, 0x5a, 0x5a);
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xfc, 0x5a, 0x5a);
+
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xf8, 0x58, 0x00, 0x10, 0x54);
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xf9, 0x04, 0x85);
+ /* refresh rate Transition */
+ /* 60 Hz */
+ // mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x60, 0x00);
+ /* 120 Hz */
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0x60, 0x20);
+ mipi_dsi_msleep(dsi_ctx, 50);
+ // #define SAMSUNG_BRIGHTNESS_MODE 0x53
+ // mipi_dsi_generic_write_seq_multi(dsi_ctx, SAMSUNG_BRIGHTNESS_MODE, 0xE0);
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x28); /* 0x20:Normal mode + Smooth dimming off; 0x28: Normal mode + Smooth dimming on */
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xf8, 0x58, 0x00, 0x30, 0x35);
+ mipi_dsi_msleep(dsi_ctx, 100);
+ mipi_dsi_generic_write_seq_multi(dsi_ctx, 0xf9, 0xc0, 0x2b);
+ mipi_dsi_msleep(dsi_ctx, 100);
+ mipi_dsi_dcs_set_display_on_multi(dsi_ctx);
+}
+
+static int samsung_amsa26zp01_disable(struct drm_panel *panel)
+{
+ struct samsung_amsa26zp01 *ctx = to_samsung_amsa26zp01(panel);
+ struct mipi_dsi_device *dsi = ctx->dsi;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+
+ dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
+ mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+
+ mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+ mipi_dsi_msleep(&dsi_ctx, 100);
+
+ return dsi_ctx.accum_err;
+}
+
+static int samsung_amsa26zp01_prepare(struct drm_panel *panel)
+{
+ struct samsung_amsa26zp01 *ctx = to_samsung_amsa26zp01(panel);
+ struct drm_dsc_picture_parameter_set pps;
+ struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
+
+ dsi_ctx.accum_err = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (dsi_ctx.accum_err)
+ return dsi_ctx.accum_err;
+
+ samsung_amsa26zp01_reset(ctx);
+
+ samsung_amsa26zp01_on(&dsi_ctx);
+
+ drm_dsc_pps_payload_pack(&pps, &ctx->dsc);
+ // print_hex_dump_bytes("pps: ", DUMP_PREFIX_OFFSET, &pps, sizeof(pps));
+ mipi_dsi_picture_parameter_set_multi(&dsi_ctx, &pps);
+ mipi_dsi_compression_mode_ext_multi(&dsi_ctx, true, MIPI_DSI_COMPRESSION_DSC, 0);
+ mipi_dsi_msleep(&dsi_ctx, 28);
+
+ if (dsi_ctx.accum_err) {
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ }
+
+ return dsi_ctx.accum_err;
+}
+
+static int samsung_amsa26zp01_unprepare(struct drm_panel *panel)
+{
+ struct samsung_amsa26zp01 *ctx = to_samsung_amsa26zp01(panel);
+
+ gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+ regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+
+ return 0;
+}
+
+static const struct drm_display_mode samsung_2k_dsc_60_mode = {
+ .clock = (2560 + 12 + 12 + 20) * (1600 + 12 + 2 + 16) * 60 / 1000,
+ .hdisplay = 2560,
+ .hsync_start = 2560 + 12,
+ .hsync_end = 2560 + 12 + 12,
+ .htotal = 2560 + 12 + 12 + 20,
+ .vdisplay = 1600,
+ .vsync_start = 1600 + 12,
+ .vsync_end = 1600 + 12 + 2,
+ .vtotal = 1600 + 12 + 2 + 16,
+ .width_mm = 271,
+ .height_mm = 170,
+ .type = DRM_MODE_TYPE_DRIVER,
+};
+
+static const struct drm_display_mode samsung_2k_dsc_120_mode = {
+ .clock = (2560 + 20 + 12 + 20) * (1600 + 8 + 2 + 16) * 120 / 1000,
+ .hdisplay = 2560,
+ .hsync_start = 2560 + 20,
+ .hsync_end = 2560 + 20 + 12,
+ .htotal = 2560 + 20 + 12 + 20,
+ .vdisplay = 1600,
+ .vsync_start = 1600 + 8,
+ .vsync_end = 1600 + 8 + 2,
+ .vtotal = 1600 + 8 + 2 + 16,
+ .width_mm = 271,
+ .height_mm = 170,
+ .type = DRM_MODE_TYPE_DRIVER,
+};
+
+static int samsung_amsa26zp01_get_modes(struct drm_panel *panel,
+ struct drm_connector *connector)
+{
+ int count = 0;
+
+ /* Initialize 120Hz first */
+ count += drm_connector_helper_get_modes_fixed(connector, &samsung_2k_dsc_120_mode);
+ count += drm_connector_helper_get_modes_fixed(connector, &samsung_2k_dsc_60_mode);
+
+ return count;
+
+}
+
+static const struct drm_panel_funcs samsung_amsa26zp01_panel_funcs = {
+ .prepare = samsung_amsa26zp01_prepare,
+ .unprepare = samsung_amsa26zp01_unprepare,
+ .disable = samsung_amsa26zp01_disable,
+ .get_modes = samsung_amsa26zp01_get_modes,
+};
+
+static int samsung_amsa26zp01_bl_update_status(struct backlight_device *bl)
+{
+ struct mipi_dsi_device *dsi = bl_get_data(bl);
+ u16 brightness = backlight_get_brightness(bl);
+ int ret;
+
+ ret = mipi_dsi_dcs_set_display_brightness(dsi, brightness);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static const struct backlight_ops samsung_amsa26zp01_bl_ops = {
+ .update_status = samsung_amsa26zp01_bl_update_status,
+};
+
+static struct backlight_device *
+samsung_amsa26zp01_create_backlight(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ const struct backlight_properties props = {
+ .type = BACKLIGHT_RAW,
+ .brightness = 1024,
+ .max_brightness = 2047,
+ };
+
+ return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
+ &samsung_amsa26zp01_bl_ops, &props);
+}
+
+static int samsung_amsa26zp01_probe(struct mipi_dsi_device *dsi)
+{
+ struct device *dev = &dsi->dev;
+ struct samsung_amsa26zp01 *ctx;
+ int ret;
+
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->supplies[0].supply = "vddio";
+ ctx->supplies[1].supply = "vdd";
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to get vddio regulator\n");
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
+ if (ret)
+ dev_err(dev, "Failed to enable regulators: %d\n", 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_VIDEO_BURST |
+ MIPI_DSI_CLOCK_NON_CONTINUOUS;
+
+ drm_panel_init(&ctx->panel, dev, &samsung_amsa26zp01_panel_funcs,
+ DRM_MODE_CONNECTOR_DSI);
+ ctx->panel.prepare_prev_first = true;
+
+ drm_panel_add(&ctx->panel);
+
+ ctx->panel.backlight = samsung_amsa26zp01_create_backlight(dsi);
+ if (IS_ERR(ctx->panel.backlight))
+ return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
+ "Failed to create backlight\n");
+
+
+ /* 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 = 100;
+ ctx->dsc.slice_width = 1280;
+ /*
+ * TODO: hdisplay should be read from the selected mode once
+ * it is passed back to drm_panel (in prepare?)
+ */
+ WARN_ON(2560 % ctx->dsc.slice_width);
+ ctx->dsc.slice_count = 2560 / 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 = devm_mipi_dsi_attach(dev, 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 samsung_amsa26zp01_remove(struct mipi_dsi_device *dsi)
+{
+ struct samsung_amsa26zp01 *ctx = mipi_dsi_get_drvdata(dsi);
+
+ drm_panel_remove(&ctx->panel);
+}
+
+static const struct of_device_id samsung_amsa26zp01_of_match[] = {
+ { .compatible = "samsung,amsa26zp01" }, //amsa26zp01
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, samsung_amsa26zp01_of_match);
+
+static struct mipi_dsi_driver samsung_amsa26zp01_driver = {
+ .probe = samsung_amsa26zp01_probe,
+ .remove = samsung_amsa26zp01_remove,
+ .driver = {
+ .name = "panel-samsung-amsa26zp01",
+ .of_match_table = samsung_amsa26zp01_of_match,
+ },
+};
+module_mipi_dsi_driver(samsung_amsa26zp01_driver);
+
+MODULE_AUTHOR("Chalkin <[email protected]>");
+MODULE_DESCRIPTION("DRM driver for Samsung AMSA26ZP01 DSC DSI panel");
+MODULE_LICENSE("GPL");
\ No newline at end of file
--
2.47.3
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