add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c
..
..
@@ -1,29 +1,27 @@
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-// SPDX-License-Identifier: GPL-2.0
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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- * Copyright(c) 2017 Icenowy Zheng <icenowy@aosc.io>
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+ * Copyright(c) 2016, Analogix Semiconductor.
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  *
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- * Based on analogix-anx78xx.c, which is:
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- *   Copyright(c) 2016, Analogix Semiconductor. All rights reserved.
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+ * Based on anx7808 driver obtained from chromeos with copyright:
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+ * Copyright(c) 2013, Google Inc.
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  */
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-
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-#include <linux/module.h>
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 #include <linux/regmap.h>
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9
 
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 #include <drm/drm.h>
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-#include <drm/drmP.h>
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 #include <drm/drm_dp_helper.h>
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+#include <drm/drm_print.h>
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13
 
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 #include "analogix-i2c-dptx.h"
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 #define AUX_WAIT_TIMEOUT_MS	15
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 #define AUX_CH_BUFFER_SIZE	16
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-static int anx_clear_bits(struct regmap *map, u8 reg, u8 mask)
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+static int anx_i2c_dp_clear_bits(struct regmap *map, u8 reg, u8 mask)
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 {
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 	return regmap_update_bits(map, reg, mask, 0);
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 }
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-static bool anx_aux_op_finished(struct regmap *map_dptx)
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+static bool anx_dp_aux_op_finished(struct regmap *map_dptx)
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 {
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 	unsigned int value;
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 	int err;
..
..
@@ -35,7 +33,7 @@
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 	return (value & SP_AUX_EN) == 0;
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 }
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-static int anx_aux_wait(struct regmap *map_dptx)
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+static int anx_dp_aux_wait(struct regmap *map_dptx)
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 {
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 	unsigned long timeout;
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 	unsigned int status;
..
..
@@ -43,9 +41,9 @@
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 	timeout = jiffies + msecs_to_jiffies(AUX_WAIT_TIMEOUT_MS) + 1;
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-	while (!anx_aux_op_finished(map_dptx)) {
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+	while (!anx_dp_aux_op_finished(map_dptx)) {
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 		if (time_after(jiffies, timeout)) {
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-			if (!anx_aux_op_finished(map_dptx)) {
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+			if (!anx_dp_aux_op_finished(map_dptx)) {
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 				DRM_ERROR("Timed out waiting AUX to finish\n");
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 				return -ETIMEDOUT;
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 			}
..
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@@ -72,7 +70,7 @@
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 	return 0;
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 }
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-static int anx_aux_address(struct regmap *map_dptx, unsigned int addr)
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+static int anx_dp_aux_address(struct regmap *map_dptx, unsigned int addr)
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 {
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 	int err;
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..
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@@ -100,7 +98,8 @@
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 	return 0;
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 }
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-ssize_t anx_aux_transfer(struct regmap *map_dptx, struct drm_dp_aux_msg *msg)
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+ssize_t anx_dp_aux_transfer(struct regmap *map_dptx,
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+				struct drm_dp_aux_msg *msg)
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 {
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 	u8 ctrl1 = msg->request;
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 	u8 ctrl2 = SP_AUX_EN;
..
..
@@ -127,7 +126,7 @@
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 	}
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 	/* Write address and request */
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-	err = anx_aux_address(map_dptx, msg->address);
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+	err = anx_dp_aux_address(map_dptx, msg->address);
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 	if (err)
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 		return err;
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..
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@@ -141,7 +140,7 @@
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 	if (err)
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 		return err;
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-	err = anx_aux_wait(map_dptx);
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+	err = anx_dp_aux_wait(map_dptx);
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 	if (err)
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 		return err;
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..
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@@ -156,14 +155,11 @@
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 			return err;
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 	}
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-	err = anx_clear_bits(map_dptx, SP_DP_AUX_CH_CTRL2_REG, SP_ADDR_ONLY);
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+	err = anx_i2c_dp_clear_bits(map_dptx, SP_DP_AUX_CH_CTRL2_REG,
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+				    SP_ADDR_ONLY);
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 	if (err)
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 		return err;
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 	return msg->size;
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 }
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-EXPORT_SYMBOL(anx_aux_transfer);
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-
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-MODULE_DESCRIPTION("Analogix DisplayPort Transmitter common code");
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-MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");
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-MODULE_LICENSE("GPL v2");
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+EXPORT_SYMBOL_GPL(anx_dp_aux_transfer);