/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright(c) 2016, Analogix Semiconductor.
* Copyright(c) 2017, Icenowy Zheng <icenowy@aosc.io>
*
* Based on anx7808 driver obtained from chromeos with copyright:
* Copyright(c) 2013, Google Inc.
*/
#include <linux/delay.h>
#include <linux/err.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_platform.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/types.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_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
#include "analogix-i2c-dptx.h"
#include "analogix-i2c-txcommon.h"
#define POLL_DELAY 50000 /* us */
#define POLL_TIMEOUT 5000000 /* us */
#define I2C_IDX_DPTX 0
#define I2C_IDX_TXCOM 1
static const u8 anx6345_i2c_addresses[] = {
[I2C_IDX_DPTX] = 0x70,
[I2C_IDX_TXCOM] = 0x72,
};
#define I2C_NUM_ADDRESSES ARRAY_SIZE(anx6345_i2c_addresses)
struct anx6345 {
struct drm_dp_aux aux;
struct drm_bridge bridge;
struct i2c_client *client;
struct edid *edid;
struct drm_connector connector;
struct drm_panel *panel;
struct regulator *dvdd12;
struct regulator *dvdd25;
struct gpio_desc *gpiod_reset;
struct mutex lock; /* protect EDID access */
/* I2C Slave addresses of ANX6345 are mapped as DPTX and SYS */
struct i2c_client *i2c_clients[I2C_NUM_ADDRESSES];
struct regmap *map[I2C_NUM_ADDRESSES];
u16 chipid;
u8 dpcd[DP_RECEIVER_CAP_SIZE];
bool powered;
};
static inline struct anx6345 *connector_to_anx6345(struct drm_connector *c)
{
return container_of(c, struct anx6345, connector);
}
static inline struct anx6345 *bridge_to_anx6345(struct drm_bridge *bridge)
{
return container_of(bridge, struct anx6345, bridge);
}
static int anx6345_set_bits(struct regmap *map, u8 reg, u8 mask)
{
return regmap_update_bits(map, reg, mask, mask);
}
static int anx6345_clear_bits(struct regmap *map, u8 reg, u8 mask)
{
return regmap_update_bits(map, reg, mask, 0);
}
static ssize_t anx6345_aux_transfer(struct drm_dp_aux *aux,
struct drm_dp_aux_msg *msg)
{
struct anx6345 *anx6345 = container_of(aux, struct anx6345, aux);
return anx_dp_aux_transfer(anx6345->map[I2C_IDX_DPTX], msg);
}
static int anx6345_dp_link_training(struct anx6345 *anx6345)
{
unsigned int value;
u8 dp_bw, dpcd[2];
int err;
err = anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM],
SP_POWERDOWN_CTRL_REG,
SP_TOTAL_PD);
if (err)
return err;
err = drm_dp_dpcd_readb(&anx6345->aux, DP_MAX_LINK_RATE, &dp_bw);
if (err < 0)
return err;
switch (dp_bw) {
case DP_LINK_BW_1_62:
case DP_LINK_BW_2_7:
break;
default:
DRM_DEBUG_KMS("DP bandwidth (%#02x) not supported\n", dp_bw);
return -EINVAL;
}
err = anx6345_set_bits(anx6345->map[I2C_IDX_TXCOM], SP_VID_CTRL1_REG,
SP_VIDEO_MUTE);
if (err)
return err;
err = anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM],
SP_VID_CTRL1_REG, SP_VIDEO_EN);
if (err)
return err;
/* Get DPCD info */
err = drm_dp_dpcd_read(&anx6345->aux, DP_DPCD_REV,
&anx6345->dpcd, DP_RECEIVER_CAP_SIZE);
if (err < 0) {
DRM_ERROR("Failed to read DPCD: %d\n", err);
return err;
}
/* Clear channel x SERDES power down */
err = anx6345_clear_bits(anx6345->map[I2C_IDX_DPTX],
SP_DP_ANALOG_POWER_DOWN_REG, SP_CH0_PD);
if (err)
return err;
/*
* Power up the sink (DP_SET_POWER register is only available on DPCD
* v1.1 and later).
*/
if (anx6345->dpcd[DP_DPCD_REV] >= 0x11) {
err = drm_dp_dpcd_readb(&anx6345->aux, DP_SET_POWER, &dpcd[0]);
if (err < 0) {
DRM_ERROR("Failed to read DP_SET_POWER register: %d\n",
err);
return err;
}
dpcd[0] &= ~DP_SET_POWER_MASK;
dpcd[0] |= DP_SET_POWER_D0;
err = drm_dp_dpcd_writeb(&anx6345->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 */
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_DOWNSPREAD_CTRL1_REG, 0);
if (err)
return err;
if (anx6345->dpcd[DP_MAX_DOWNSPREAD] & DP_MAX_DOWNSPREAD_0_5) {
DRM_DEBUG("Enable downspread on the sink\n");
/* 4000PPM */
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_DOWNSPREAD_CTRL1_REG, 8);
if (err)
return err;
err = drm_dp_dpcd_writeb(&anx6345->aux, DP_DOWNSPREAD_CTRL,
DP_SPREAD_AMP_0_5);
if (err < 0)
return err;
} else {
err = drm_dp_dpcd_writeb(&anx6345->aux, DP_DOWNSPREAD_CTRL, 0);
if (err < 0)
return err;
}
/* Set the lane count and the link rate on the sink */
if (drm_dp_enhanced_frame_cap(anx6345->dpcd))
err = anx6345_set_bits(anx6345->map[I2C_IDX_DPTX],
SP_DP_SYSTEM_CTRL_BASE + 4,
SP_ENHANCED_MODE);
else
err = anx6345_clear_bits(anx6345->map[I2C_IDX_DPTX],
SP_DP_SYSTEM_CTRL_BASE + 4,
SP_ENHANCED_MODE);
if (err)
return err;
dpcd[0] = dp_bw;
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_MAIN_LINK_BW_SET_REG, dpcd[0]);
if (err)
return err;
dpcd[1] = drm_dp_max_lane_count(anx6345->dpcd);
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_LANE_COUNT_SET_REG, dpcd[1]);
if (err)
return err;
if (drm_dp_enhanced_frame_cap(anx6345->dpcd))
dpcd[1] |= DP_LANE_COUNT_ENHANCED_FRAME_EN;
err = drm_dp_dpcd_write(&anx6345->aux, DP_LINK_BW_SET, dpcd,
sizeof(dpcd));
if (err < 0) {
DRM_ERROR("Failed to configure link: %d\n", err);
return err;
}
/* Start training on the source */
err = regmap_write(anx6345->map[I2C_IDX_DPTX], SP_DP_LT_CTRL_REG,
SP_LT_EN);
if (err)
return err;
return regmap_read_poll_timeout(anx6345->map[I2C_IDX_DPTX],
SP_DP_LT_CTRL_REG,
value, !(value & SP_DP_LT_INPROGRESS),
POLL_DELAY, POLL_TIMEOUT);
}
static int anx6345_tx_initialization(struct anx6345 *anx6345)
{
int err, i;
/* FIXME: colordepth is hardcoded for now */
err = regmap_write(anx6345->map[I2C_IDX_TXCOM], SP_VID_CTRL2_REG,
SP_IN_BPC_6BIT << SP_IN_BPC_SHIFT);
if (err)
return err;
err = regmap_write(anx6345->map[I2C_IDX_DPTX], SP_DP_PLL_CTRL_REG, 0);
if (err)
return err;
err = regmap_write(anx6345->map[I2C_IDX_TXCOM],
SP_ANALOG_DEBUG1_REG, 0);
if (err)
return err;
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_LINK_DEBUG_CTRL_REG,
SP_NEW_PRBS7 | SP_M_VID_DEBUG);
if (err)
return err;
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_ANALOG_POWER_DOWN_REG, 0);
if (err)
return err;
/* Force HPD */
err = anx6345_set_bits(anx6345->map[I2C_IDX_DPTX],
SP_DP_SYSTEM_CTRL_BASE + 3,
SP_HPD_FORCE | SP_HPD_CTRL);
if (err)
return err;
for (i = 0; i < 4; i++) {
/* 4 lanes */
err = regmap_write(anx6345->map[I2C_IDX_DPTX],
SP_DP_LANE0_LT_CTRL_REG + i, 0);
if (err)
return err;
}
/* Reset AUX */
err = anx6345_set_bits(anx6345->map[I2C_IDX_TXCOM],
SP_RESET_CTRL2_REG, SP_AUX_RST);
if (err)
return err;
return anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM],
SP_RESET_CTRL2_REG, SP_AUX_RST);
}
static void anx6345_poweron(struct anx6345 *anx6345)
{
int err;
/* Ensure reset is asserted before starting power on sequence */
gpiod_set_value_cansleep(anx6345->gpiod_reset, 1);
usleep_range(1000, 2000);
err = regulator_enable(anx6345->dvdd12);
if (err) {
DRM_ERROR("Failed to enable dvdd12 regulator: %d\n",
err);
return;
}
/* T1 - delay between VDD12 and VDD25 should be 0-2ms */
usleep_range(1000, 2000);
err = regulator_enable(anx6345->dvdd25);
if (err) {
DRM_ERROR("Failed to enable dvdd25 regulator: %d\n",
err);
return;
}
/* T2 - delay between RESETN and all power rail stable,
* should be 2-5ms
*/
usleep_range(2000, 5000);
gpiod_set_value_cansleep(anx6345->gpiod_reset, 0);
/* Power on registers module */
anx6345_set_bits(anx6345->map[I2C_IDX_TXCOM], SP_POWERDOWN_CTRL_REG,
SP_HDCP_PD | SP_AUDIO_PD | SP_VIDEO_PD | SP_LINK_PD);
anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM], SP_POWERDOWN_CTRL_REG,
SP_REGISTER_PD | SP_TOTAL_PD);
if (anx6345->panel)
drm_panel_prepare(anx6345->panel);
anx6345->powered = true;
}
static void anx6345_poweroff(struct anx6345 *anx6345)
{
int err;
gpiod_set_value_cansleep(anx6345->gpiod_reset, 1);
usleep_range(1000, 2000);
if (anx6345->panel)
drm_panel_unprepare(anx6345->panel);
err = regulator_disable(anx6345->dvdd25);
if (err) {
DRM_ERROR("Failed to disable dvdd25 regulator: %d\n",
err);
return;
}
usleep_range(5000, 10000);
err = regulator_disable(anx6345->dvdd12);
if (err) {
DRM_ERROR("Failed to disable dvdd12 regulator: %d\n",
err);
return;
}
usleep_range(1000, 2000);
anx6345->powered = false;
}
static int anx6345_start(struct anx6345 *anx6345)
{
int err;
if (!anx6345->powered)
anx6345_poweron(anx6345);
/* Power on needed modules */
err = anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM],
SP_POWERDOWN_CTRL_REG,
SP_VIDEO_PD | SP_LINK_PD);
err = anx6345_tx_initialization(anx6345);
if (err) {
DRM_ERROR("Failed eDP transmitter initialization: %d\n", err);
anx6345_poweroff(anx6345);
return err;
}
err = anx6345_dp_link_training(anx6345);
if (err) {
DRM_ERROR("Failed link training: %d\n", err);
anx6345_poweroff(anx6345);
return err;
}
/*
* This delay seems to help keep the hardware in a good state. Without
* it, there are times where it fails silently.
*/
usleep_range(10000, 15000);
return 0;
}
static int anx6345_config_dp_output(struct anx6345 *anx6345)
{
int err;
err = anx6345_clear_bits(anx6345->map[I2C_IDX_TXCOM], SP_VID_CTRL1_REG,
SP_VIDEO_MUTE);
if (err)
return err;
/* Enable DP output */
err = anx6345_set_bits(anx6345->map[I2C_IDX_TXCOM], SP_VID_CTRL1_REG,
SP_VIDEO_EN);
if (err)
return err;
/* Force stream valid */
return anx6345_set_bits(anx6345->map[I2C_IDX_DPTX],
SP_DP_SYSTEM_CTRL_BASE + 3,
SP_STRM_FORCE | SP_STRM_CTRL);
}
static int anx6345_get_downstream_info(struct anx6345 *anx6345)
{
u8 value;
int err;
err = drm_dp_dpcd_readb(&anx6345->aux, DP_SINK_COUNT, &value);
if (err < 0) {
DRM_ERROR("Get sink count failed %d\n", err);
return err;
}
if (!DP_GET_SINK_COUNT(value)) {
DRM_ERROR("Downstream disconnected\n");
return -EIO;
}
return 0;
}
static int anx6345_get_modes(struct drm_connector *connector)
{
struct anx6345 *anx6345 = connector_to_anx6345(connector);
int err, num_modes = 0;
bool power_off = false;
mutex_lock(&anx6345->lock);
if (!anx6345->edid) {
if (!anx6345->powered) {
anx6345_poweron(anx6345);
power_off = true;
}
err = anx6345_get_downstream_info(anx6345);
if (err) {
DRM_ERROR("Failed to get downstream info: %d\n", err);
goto unlock;
}
anx6345->edid = drm_get_edid(connector, &anx6345->aux.ddc);
if (!anx6345->edid)
DRM_ERROR("Failed to read EDID from panel\n");
err = drm_connector_update_edid_property(connector,
anx6345->edid);
if (err) {
DRM_ERROR("Failed to update EDID property: %d\n", err);
goto unlock;
}
}
num_modes += drm_add_edid_modes(connector, anx6345->edid);
/* Driver currently supports only 6bpc */
connector->display_info.bpc = 6;
unlock:
if (power_off)
anx6345_poweroff(anx6345);
mutex_unlock(&anx6345->lock);
if (!num_modes && anx6345->panel)
num_modes += drm_panel_get_modes(anx6345->panel, connector);
return num_modes;
}
static const struct drm_connector_helper_funcs anx6345_connector_helper_funcs = {
.get_modes = anx6345_get_modes,
};
static void
anx6345_connector_destroy(struct drm_connector *connector)
{
drm_connector_cleanup(connector);
}
static const struct drm_connector_funcs anx6345_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = anx6345_connector_destroy,
.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 anx6345_bridge_attach(struct drm_bridge *bridge,
enum drm_bridge_attach_flags flags)
{
struct anx6345 *anx6345 = bridge_to_anx6345(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");
return -ENODEV;
}
/* Register aux channel */
anx6345->aux.name = "DP-AUX";
anx6345->aux.dev = &anx6345->client->dev;
anx6345->aux.drm_dev = bridge->dev;
anx6345->aux.transfer = anx6345_aux_transfer;
err = drm_dp_aux_register(&anx6345->aux);
if (err < 0) {
DRM_ERROR("Failed to register aux channel: %d\n", err);
return err;
}
err = drm_connector_init(bridge->dev, &anx6345->connector,
&anx6345_connector_funcs,
DRM_MODE_CONNECTOR_eDP);
if (err) {
DRM_ERROR("Failed to initialize connector: %d\n", err);
goto aux_unregister;
}
drm_connector_helper_add(&anx6345->connector,
&anx6345_connector_helper_funcs);
anx6345->connector.polled = DRM_CONNECTOR_POLL_HPD;
err = drm_connector_attach_encoder(&anx6345->connector,
bridge->encoder);
if (err) {
DRM_ERROR("Failed to link up connector to encoder: %d\n", err);
goto connector_cleanup;
}
err = drm_connector_register(&anx6345->connector);
if (err) {
DRM_ERROR("Failed to register connector: %d\n", err);
goto connector_cleanup;
}
return 0;
connector_cleanup:
drm_connector_cleanup(&anx6345->connector);
aux_unregister:
drm_dp_aux_unregister(&anx6345->aux);
return err;
}
static void anx6345_bridge_detach(struct drm_bridge *bridge)
{
drm_dp_aux_unregister(&bridge_to_anx6345(bridge)->aux);
}
static enum drm_mode_status
anx6345_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)
return MODE_NO_INTERLACE;
/* Max 1200p at 5.4 Ghz, one lane */
if (mode->clock > 154000)
return MODE_CLOCK_HIGH;
return MODE_OK;
}
static void anx6345_bridge_disable(struct drm_bridge *bridge)
{
struct anx6345 *anx6345 = bridge_to_anx6345(bridge);
/* Power off all modules except configuration registers access */
anx6345_set_bits(anx6345->map[I2C_IDX_TXCOM], SP_POWERDOWN_CTRL_REG,
SP_HDCP_PD | SP_AUDIO_PD | SP_VIDEO_PD | SP_LINK_PD);
if (anx6345->panel)
drm_panel_disable(anx6345->panel);
if (anx6345->powered)
anx6345_poweroff(anx6345);
}
static void anx6345_bridge_enable(struct drm_bridge *bridge)
{
struct anx6345 *anx6345 = bridge_to_anx6345(bridge);
int err;
if (anx6345->panel)
drm_panel_enable(anx6345->panel);
err = anx6345_start(anx6345);
if (err) {
DRM_ERROR("Failed to initialize: %d\n", err);
return;
}
err = anx6345_config_dp_output(anx6345);
if (err)
DRM_ERROR("Failed to enable DP output: %d\n", err);
}
static const struct drm_bridge_funcs anx6345_bridge_funcs = {
.attach = anx6345_bridge_attach,
.detach = anx6345_bridge_detach,
.mode_valid = anx6345_bridge_mode_valid,
.disable = anx6345_bridge_disable,
.enable = anx6345_bridge_enable,
};
static void unregister_i2c_dummy_clients(struct anx6345 *anx6345)
{
unsigned int i;
for (i = 1; i < ARRAY_SIZE(anx6345->i2c_clients); i++)
if (anx6345->i2c_clients[i] &&
anx6345->i2c_clients[i]->addr != anx6345->client->addr)
i2c_unregister_device(anx6345->i2c_clients[i]);
}
static const struct regmap_config anx6345_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0xff,
.cache_type = REGCACHE_NONE,
};
static const u16 anx6345_chipid_list[] = {
0x6345,
};
static bool anx6345_get_chip_id(struct anx6345 *anx6345)
{
unsigned int i, idl, idh, version;
if (regmap_read(anx6345->map[I2C_IDX_TXCOM], SP_DEVICE_IDL_REG, &idl))
return false;
if (regmap_read(anx6345->map[I2C_IDX_TXCOM], SP_DEVICE_IDH_REG, &idh))
return false;
anx6345->chipid = (u8)idl | ((u8)idh << 8);
if (regmap_read(anx6345->map[I2C_IDX_TXCOM], SP_DEVICE_VERSION_REG,
&version))
return false;
for (i = 0; i < ARRAY_SIZE(anx6345_chipid_list); i++) {
if (anx6345->chipid == anx6345_chipid_list[i]) {
DRM_INFO("Found ANX%x (ver. %d) eDP Transmitter\n",
anx6345->chipid, version);
return true;
}
}
DRM_ERROR("ANX%x (ver. %d) not supported by this driver\n",
anx6345->chipid, version);
return false;
}
static int anx6345_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct anx6345 *anx6345;
struct device *dev;
int i, err;
anx6345 = devm_kzalloc(&client->dev, sizeof(*anx6345), GFP_KERNEL);
if (!anx6345)
return -ENOMEM;
mutex_init(&anx6345->lock);
anx6345->bridge.of_node = client->dev.of_node;
anx6345->client = client;
i2c_set_clientdata(client, anx6345);
dev = &anx6345->client->dev;
err = drm_of_find_panel_or_bridge(client->dev.of_node, 1, 0,
&anx6345->panel, NULL);
if (err == -EPROBE_DEFER)
return err;
if (err)
DRM_DEBUG("No panel found\n");
/* 1.2V digital core power regulator */
anx6345->dvdd12 = devm_regulator_get(dev, "dvdd12");
if (IS_ERR(anx6345->dvdd12)) {
if (PTR_ERR(anx6345->dvdd12) != -EPROBE_DEFER)
DRM_ERROR("Failed to get dvdd12 supply (%ld)\n",
PTR_ERR(anx6345->dvdd12));
return PTR_ERR(anx6345->dvdd12);
}
/* 2.5V digital core power regulator */
anx6345->dvdd25 = devm_regulator_get(dev, "dvdd25");
if (IS_ERR(anx6345->dvdd25)) {
if (PTR_ERR(anx6345->dvdd25) != -EPROBE_DEFER)
DRM_ERROR("Failed to get dvdd25 supply (%ld)\n",
PTR_ERR(anx6345->dvdd25));
return PTR_ERR(anx6345->dvdd25);
}
/* GPIO for chip reset */
anx6345->gpiod_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(anx6345->gpiod_reset)) {
DRM_ERROR("Reset gpio not found\n");
return PTR_ERR(anx6345->gpiod_reset);
}
/* Map slave addresses of ANX6345 */
for (i = 0; i < I2C_NUM_ADDRESSES; i++) {
if (anx6345_i2c_addresses[i] >> 1 != client->addr)
anx6345->i2c_clients[i] = i2c_new_dummy_device(client->adapter,
anx6345_i2c_addresses[i] >> 1);
else
anx6345->i2c_clients[i] = client;
if (IS_ERR(anx6345->i2c_clients[i])) {
err = PTR_ERR(anx6345->i2c_clients[i]);
DRM_ERROR("Failed to reserve I2C bus %02x\n",
anx6345_i2c_addresses[i]);
goto err_unregister_i2c;
}
anx6345->map[i] = devm_regmap_init_i2c(anx6345->i2c_clients[i],
&anx6345_regmap_config);
if (IS_ERR(anx6345->map[i])) {
err = PTR_ERR(anx6345->map[i]);
DRM_ERROR("Failed regmap initialization %02x\n",
anx6345_i2c_addresses[i]);
goto err_unregister_i2c;
}
}
/* Look for supported chip ID */
anx6345_poweron(anx6345);
if (anx6345_get_chip_id(anx6345)) {
anx6345->bridge.funcs = &anx6345_bridge_funcs;
drm_bridge_add(&anx6345->bridge);
return 0;
} else {
anx6345_poweroff(anx6345);
err = -ENODEV;
}
err_unregister_i2c:
unregister_i2c_dummy_clients(anx6345);
return err;
}
static int anx6345_i2c_remove(struct i2c_client *client)
{
struct anx6345 *anx6345 = i2c_get_clientdata(client);
drm_bridge_remove(&anx6345->bridge);
unregister_i2c_dummy_clients(anx6345);
kfree(anx6345->edid);
mutex_destroy(&anx6345->lock);
return 0;
}
static const struct i2c_device_id anx6345_id[] = {
{ "anx6345", 0 },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, anx6345_id);
static const struct of_device_id anx6345_match_table[] = {
{ .compatible = "analogix,anx6345", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, anx6345_match_table);
static struct i2c_driver anx6345_driver = {
.driver = {
.name = "anx6345",
.of_match_table = of_match_ptr(anx6345_match_table),
},
.probe = anx6345_i2c_probe,
.remove = anx6345_i2c_remove,
.id_table = anx6345_id,
};
module_i2c_driver(anx6345_driver);
MODULE_DESCRIPTION("ANX6345 eDP Transmitter driver");
MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");
MODULE_LICENSE("GPL v2");