drm/amd/display: Try RGB before YCbCr 4:4:4 in stream validationgrafted

amdgpu_dm_create_validate_stream_for_sink() walks encoding_order[] and
uses the first encoding that validates. YCbCr 4:4:4 is listed before
RGB, so an HDMI sink that advertises 4:4:4 gets YCbCr 4:4:4 whenever the
"color format" property is left at AUTO, even though RGB fits the same
link.

That contradicts the documented AUTO behaviour for HDMI in enum
drm_connector_color_format (RGB, falling back to YCbCr 4:2:0 only when
the bandwidth is not available or the mode is 4:2:0-only), which the
amdgpu implementation of the property also describes. It also leaves
the "Broadcast RGB" property without effect on such sinks, since the
quantization range it selects only applies to RGB output.

Try RGB first. The mask still holds every encoding the sink supports,
so a mode that cannot carry RGB falls back exactly as before.

For reference, v7.2 picked RGB here unless YCbCr 4:4:4 was forced
through debugfs, while earlier kernels picked YCbCr 4:4:4 for any HDMI
sink that advertised it.

Fixes: 0b0ff65d3ca1 ("drm/amd/display: Refactor stream validation")
Suggested-by: Adolfo Rodrigues <adolfotregosa@gmail.com>
Assisted-by: Claude Code:claude-fable-5-1
Signed-off-by: Adrian Betschart <adrian.betschart@cinemaone.ch>
Reviewed-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Adolfo Rodrigues <adolfotregosa@gmail.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 7de432bc753133764dc40d37f9388da56de251e7)

1 files changed, 119 insertions, 0 deletions

diff --git a/drivers/input/touchscreen/goodix.h b/drivers/input/touchscreen/goodix.h
new file mode 100644
index 000000000..0d1e8a8d2
--- /dev/null
+++ b/drivers/input/touchscreen/goodix.h
@@ -0,0 +1,119 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+#ifndef __GOODIX_H__
+#define __GOODIX_H__
+
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/input/mt.h>
+#include <linux/input/touchscreen.h>
+#include <linux/regulator/consumer.h>
+
+/* Register defines */
+#define GOODIX_REG_MISCTL_DSP_CTL		0x4010
+#define GOODIX_REG_MISCTL_SRAM_BANK		0x4048
+#define GOODIX_REG_MISCTL_MEM_CD_EN		0x4049
+#define GOODIX_REG_MISCTL_CACHE_EN		0x404B
+#define GOODIX_REG_MISCTL_TMR0_EN		0x40B0
+#define GOODIX_REG_MISCTL_SWRST			0x4180
+#define GOODIX_REG_MISCTL_CPU_SWRST_PULSE	0x4184
+#define GOODIX_REG_MISCTL_BOOTCTL		0x4190
+#define GOODIX_REG_MISCTL_BOOT_OPT		0x4218
+#define GOODIX_REG_MISCTL_BOOT_CTL		0x5094
+
+#define GOODIX_REG_FW_SIG			0x8000
+#define GOODIX_FW_SIG_LEN			10
+
+#define GOODIX_REG_MAIN_CLK			0x8020
+#define GOODIX_MAIN_CLK_LEN			6
+
+#define GOODIX_REG_COMMAND			0x8040
+#define GOODIX_CMD_SCREEN_OFF			0x05
+
+#define GOODIX_REG_SW_WDT			0x8041
+
+#define GOODIX_REG_REQUEST			0x8043
+#define GOODIX_RQST_RESPONDED			0x00
+#define GOODIX_RQST_CONFIG			0x01
+#define GOODIX_RQST_BAK_REF			0x02
+#define GOODIX_RQST_RESET			0x03
+#define GOODIX_RQST_MAIN_CLOCK			0x04
+/*
+ * Unknown request which gets send by the controller aprox.
+ * every 34 seconds once it is up and running.
+ */
+#define GOODIX_RQST_UNKNOWN			0x06
+#define GOODIX_RQST_IDLE			0xFF
+
+#define GOODIX_REG_STATUS			0x8044
+
+#define GOODIX_GT1X_REG_CONFIG_DATA		0x8050
+#define GOODIX_GT9X_REG_CONFIG_DATA		0x8047
+#define GOODIX_REG_ID				0x8140
+#define GOODIX_READ_COOR_ADDR			0x814E
+#define GOODIX_REG_BAK_REF			0x99D0
+
+#define GOODIX_ID_MAX_LEN			4
+#define GOODIX_CONFIG_MAX_LENGTH		240
+#define GOODIX_MAX_KEYS				7
+
+enum goodix_irq_pin_access_method {
+	IRQ_PIN_ACCESS_NONE,
+	IRQ_PIN_ACCESS_GPIO,
+	IRQ_PIN_ACCESS_ACPI_GPIO,
+	IRQ_PIN_ACCESS_ACPI_METHOD,
+};
+
+struct goodix_ts_data;
+
+struct goodix_chip_data {
+	u16 config_addr;
+	int config_len;
+	int (*check_config)(struct goodix_ts_data *ts, const u8 *cfg, int len);
+	void (*calc_config_checksum)(struct goodix_ts_data *ts);
+};
+
+struct goodix_ts_data {
+	struct i2c_client *client;
+	struct input_dev *input_dev;
+	struct input_dev *input_pen;
+	const struct goodix_chip_data *chip;
+	const char *firmware_name;
+	struct touchscreen_properties prop;
+	unsigned int max_touch_num;
+	unsigned int int_trigger_type;
+	struct regulator *avdd28;
+	struct regulator *vddio;
+	struct gpio_desc *gpiod_int;
+	struct gpio_desc *gpiod_rst;
+	int gpio_count;
+	int gpio_int_idx;
+	char id[GOODIX_ID_MAX_LEN + 1];
+	char cfg_name[64];
+	u16 version;
+	bool reset_controller_at_probe;
+	bool load_cfg_from_disk;
+	int pen_input_registered;
+	struct completion firmware_loading_complete;
+	unsigned long irq_flags;
+	enum goodix_irq_pin_access_method irq_pin_access_method;
+	unsigned int contact_size;
+	u8 config[GOODIX_CONFIG_MAX_LENGTH];
+	unsigned short keymap[GOODIX_MAX_KEYS];
+	u8 main_clk[GOODIX_MAIN_CLK_LEN];
+	int bak_ref_len;
+	u8 *bak_ref;
+};
+
+int goodix_i2c_read(struct i2c_client *client, u16 reg, u8 *buf, int len);
+int goodix_i2c_write(struct i2c_client *client, u16 reg, const u8 *buf, int len);
+int goodix_i2c_write_u8(struct i2c_client *client, u16 reg, u8 value);
+int goodix_send_cfg(struct goodix_ts_data *ts, const u8 *cfg, int len);
+int goodix_int_sync(struct goodix_ts_data *ts);
+int goodix_reset_no_int_sync(struct goodix_ts_data *ts);
+
+int goodix_firmware_check(struct goodix_ts_data *ts);
+bool goodix_handle_fw_request(struct goodix_ts_data *ts);
+void goodix_save_bak_ref(struct goodix_ts_data *ts);
+
+#endif