From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 168 +++++++++++++++++++++++++++++++++----------------------
1 files changed, 101 insertions(+), 67 deletions(-)
diff --git a/kernel/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c b/kernel/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
index 836e25d..81debd0 100644
--- a/kernel/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
+++ b/kernel/drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c
@@ -1,39 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright(c) 2016, Analogix Semiconductor.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
* Based on anx7808 driver obtained from chromeos with copyright:
* Copyright(c) 2013, Google Inc.
- *
*/
#include <linux/delay.h>
#include <linux/err.h>
-#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
+#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
-#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/regmap.h>
-#include <linux/types.h>
-#include <linux/gpio/consumer.h>
#include <linux/regulator/consumer.h>
+#include <linux/types.h>
-#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
#include <drm/drm_crtc.h>
-#include <drm/drm_crtc_helper.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_edid.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
#include "analogix-anx78xx.h"
@@ -46,12 +37,20 @@
#define XTAL_CLK 270 /* 27M */
-static const u8 anx78xx_i2c_addresses[] = {
- [I2C_IDX_TX_P0] = TX_P0,
- [I2C_IDX_TX_P1] = TX_P1,
- [I2C_IDX_TX_P2] = TX_P2,
- [I2C_IDX_RX_P0] = RX_P0,
- [I2C_IDX_RX_P1] = RX_P1,
+static const u8 anx7808_i2c_addresses[] = {
+ [I2C_IDX_TX_P0] = 0x78,
+ [I2C_IDX_TX_P1] = 0x7a,
+ [I2C_IDX_TX_P2] = 0x72,
+ [I2C_IDX_RX_P0] = 0x7e,
+ [I2C_IDX_RX_P1] = 0x80,
+};
+
+static const u8 anx781x_i2c_addresses[] = {
+ [I2C_IDX_TX_P0] = 0x70,
+ [I2C_IDX_TX_P1] = 0x7a,
+ [I2C_IDX_TX_P2] = 0x72,
+ [I2C_IDX_RX_P0] = 0x7e,
+ [I2C_IDX_RX_P1] = 0x80,
};
struct anx78xx_platform_data {
@@ -70,7 +69,6 @@
struct i2c_client *client;
struct edid *edid;
struct drm_connector connector;
- struct drm_dp_link link;
struct anx78xx_platform_data pdata;
struct mutex lock;
@@ -111,7 +109,7 @@
struct drm_dp_aux_msg *msg)
{
struct anx78xx *anx78xx = container_of(aux, struct anx78xx, aux);
- return anx_aux_transfer(anx78xx->map[I2C_IDX_TX_P0], msg);
+ return anx_dp_aux_transfer(anx78xx->map[I2C_IDX_TX_P0], msg);
}
static int anx78xx_set_hpd(struct anx78xx *anx78xx)
@@ -581,7 +579,9 @@
/* 1.0V digital core power regulator */
pdata->dvdd10 = devm_regulator_get(dev, "dvdd10");
if (IS_ERR(pdata->dvdd10)) {
- DRM_ERROR("DVDD10 regulator not found\n");
+ if (PTR_ERR(pdata->dvdd10) != -EPROBE_DEFER)
+ DRM_ERROR("DVDD10 regulator not found\n");
+
return PTR_ERR(pdata->dvdd10);
}
@@ -603,7 +603,7 @@
static int anx78xx_dp_link_training(struct anx78xx *anx78xx)
{
- u8 dp_bw, value;
+ u8 dp_bw, dpcd[2];
int err;
err = regmap_write(anx78xx->map[I2C_IDX_RX_P0], SP_HDMI_MUTE_CTRL_REG,
@@ -656,18 +656,34 @@
if (err)
return err;
- /* Check link capabilities */
- err = drm_dp_link_probe(&anx78xx->aux, &anx78xx->link);
- if (err < 0) {
- DRM_ERROR("Failed to probe link capabilities: %d\n", err);
- return err;
- }
+ /*
+ * Power up the sink (DP_SET_POWER register is only available on DPCD
+ * v1.1 and later).
+ */
+ if (anx78xx->dpcd[DP_DPCD_REV] >= 0x11) {
+ err = drm_dp_dpcd_readb(&anx78xx->aux, DP_SET_POWER, &dpcd[0]);
+ if (err < 0) {
+ DRM_ERROR("Failed to read DP_SET_POWER register: %d\n",
+ err);
+ return err;
+ }
- /* Power up the sink */
- err = drm_dp_link_power_up(&anx78xx->aux, &anx78xx->link);
- if (err < 0) {
- DRM_ERROR("Failed to power up DisplayPort link: %d\n", err);
- return err;
+ dpcd[0] &= ~DP_SET_POWER_MASK;
+ dpcd[0] |= DP_SET_POWER_D0;
+
+ err = drm_dp_dpcd_writeb(&anx78xx->aux, DP_SET_POWER, dpcd[0]);
+ if (err < 0) {
+ DRM_ERROR("Failed to power up DisplayPort link: %d\n",
+ err);
+ return err;
+ }
+
+ /*
+ * According to the DP 1.1 specification, a "Sink Device must
+ * exit the power saving state within 1 ms" (Section 2.5.3.1,
+ * Table 5-52, "Sink Control Field" (register 0x600).
+ */
+ usleep_range(1000, 2000);
}
/* Possibly enable downspread on the sink */
@@ -706,15 +722,21 @@
if (err)
return err;
- value = drm_dp_link_rate_to_bw_code(anx78xx->link.rate);
err = regmap_write(anx78xx->map[I2C_IDX_TX_P0],
- SP_DP_MAIN_LINK_BW_SET_REG, value);
+ SP_DP_MAIN_LINK_BW_SET_REG,
+ anx78xx->dpcd[DP_MAX_LINK_RATE]);
if (err)
return err;
- err = drm_dp_link_configure(&anx78xx->aux, &anx78xx->link);
+ dpcd[1] = drm_dp_max_lane_count(anx78xx->dpcd);
+
+ if (drm_dp_enhanced_frame_cap(anx78xx->dpcd))
+ dpcd[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
+
+ err = drm_dp_dpcd_write(&anx78xx->aux, DP_LINK_BW_SET, dpcd,
+ sizeof(dpcd));
if (err < 0) {
- DRM_ERROR("Failed to configure DisplayPort link: %d\n", err);
+ DRM_ERROR("Failed to configure link: %d\n", err);
return err;
}
@@ -825,16 +847,14 @@
goto unlock;
}
- err = drm_mode_connector_update_edid_property(connector,
- anx78xx->edid);
+ err = drm_connector_update_edid_property(connector,
+ anx78xx->edid);
if (err) {
DRM_ERROR("Failed to update EDID property: %d\n", err);
goto unlock;
}
num_modes = drm_add_edid_modes(connector, anx78xx->edid);
- /* Store the ELD */
- drm_edid_to_eld(connector, anx78xx->edid);
unlock:
mutex_unlock(&anx78xx->lock);
@@ -857,25 +877,25 @@
return connector_status_connected;
}
-static void anx78xx_connector_destroy(struct drm_connector *connector)
-{
- drm_connector_cleanup(connector);
-}
-
static const struct drm_connector_funcs anx78xx_connector_funcs = {
- .dpms = drm_atomic_helper_connector_dpms,
.fill_modes = drm_helper_probe_single_connector_modes,
.detect = anx78xx_detect,
- .destroy = anx78xx_connector_destroy,
+ .destroy = drm_connector_cleanup,
.reset = drm_atomic_helper_connector_reset,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
-static int anx78xx_bridge_attach(struct drm_bridge *bridge)
+static int anx78xx_bridge_attach(struct drm_bridge *bridge,
+ enum drm_bridge_attach_flags flags)
{
struct anx78xx *anx78xx = bridge_to_anx78xx(bridge);
int err;
+
+ if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) {
+ DRM_ERROR("Fix bridge driver to make connector optional!");
+ return -EINVAL;
+ }
if (!bridge->encoder) {
DRM_ERROR("Parent encoder object not found");
@@ -912,8 +932,8 @@
anx78xx->connector.polled = DRM_CONNECTOR_POLL_HPD;
- err = drm_mode_connector_attach_encoder(&anx78xx->connector,
- bridge->encoder);
+ err = drm_connector_attach_encoder(&anx78xx->connector,
+ bridge->encoder);
if (err) {
DRM_ERROR("Failed to link up connector to encoder: %d\n", err);
return err;
@@ -924,6 +944,7 @@
static enum drm_mode_status
anx78xx_bridge_mode_valid(struct drm_bridge *bridge,
+ const struct drm_display_info *info,
const struct drm_display_mode *mode)
{
if (mode->flags & DRM_MODE_FLAG_INTERLACE)
@@ -946,8 +967,8 @@
}
static void anx78xx_bridge_mode_set(struct drm_bridge *bridge,
- struct drm_display_mode *mode,
- struct drm_display_mode *adjusted_mode)
+ const struct drm_display_mode *mode,
+ const struct drm_display_mode *adjusted_mode)
{
struct anx78xx *anx78xx = bridge_to_anx78xx(bridge);
struct hdmi_avi_infoframe frame;
@@ -958,7 +979,9 @@
mutex_lock(&anx78xx->lock);
- err = drm_hdmi_avi_infoframe_from_display_mode(&frame, adjusted_mode);
+ err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
+ &anx78xx->connector,
+ adjusted_mode);
if (err) {
DRM_ERROR("Failed to setup AVI infoframe: %d\n", err);
goto unlock;
@@ -1173,6 +1196,7 @@
};
static const u16 anx78xx_chipid_list[] = {
+ 0x7808,
0x7812,
0x7814,
0x7818,
@@ -1184,6 +1208,7 @@
struct anx78xx *anx78xx;
struct anx78xx_platform_data *pdata;
unsigned int i, idl, idh, version;
+ const u8 *i2c_addresses;
bool found = false;
int err;
@@ -1204,7 +1229,9 @@
err = anx78xx_init_pdata(anx78xx);
if (err) {
- DRM_ERROR("Failed to initialize pdata: %d\n", err);
+ if (err != -EPROBE_DEFER)
+ DRM_ERROR("Failed to initialize pdata: %d\n", err);
+
return err;
}
@@ -1221,22 +1248,26 @@
}
/* Map slave addresses of ANX7814 */
+ i2c_addresses = device_get_match_data(&client->dev);
for (i = 0; i < I2C_NUM_ADDRESSES; i++) {
- anx78xx->i2c_dummy[i] = i2c_new_dummy(client->adapter,
- anx78xx_i2c_addresses[i] >> 1);
- if (!anx78xx->i2c_dummy[i]) {
- err = -ENOMEM;
- DRM_ERROR("Failed to reserve I2C bus %02x\n",
- anx78xx_i2c_addresses[i]);
+ struct i2c_client *i2c_dummy;
+
+ i2c_dummy = i2c_new_dummy_device(client->adapter,
+ i2c_addresses[i] >> 1);
+ if (IS_ERR(i2c_dummy)) {
+ err = PTR_ERR(i2c_dummy);
+ DRM_ERROR("Failed to reserve I2C bus %02x: %d\n",
+ i2c_addresses[i], err);
goto err_unregister_i2c;
}
+ anx78xx->i2c_dummy[i] = i2c_dummy;
anx78xx->map[i] = devm_regmap_init_i2c(anx78xx->i2c_dummy[i],
&anx78xx_regmap_config);
if (IS_ERR(anx78xx->map[i])) {
err = PTR_ERR(anx78xx->map[i]);
DRM_ERROR("Failed regmap initialization %02x\n",
- anx78xx_i2c_addresses[i]);
+ i2c_addresses[i]);
goto err_unregister_i2c;
}
}
@@ -1335,7 +1366,10 @@
#if IS_ENABLED(CONFIG_OF)
static const struct of_device_id anx78xx_match_table[] = {
- { .compatible = "analogix,anx7814", },
+ { .compatible = "analogix,anx7808", .data = anx7808_i2c_addresses },
+ { .compatible = "analogix,anx7812", .data = anx781x_i2c_addresses },
+ { .compatible = "analogix,anx7814", .data = anx781x_i2c_addresses },
+ { .compatible = "analogix,anx7818", .data = anx781x_i2c_addresses },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, anx78xx_match_table);
--
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