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Commit 803eff46 authored by Xiaowen Wu's avatar Xiaowen Wu
Browse files

drm/bridge: add 10ms delay for anx7625 resume 



after powered on, 10ms is needed to wait anx7625 ocm init before
the next operation.

Change-Id: Iefd1b6e7351dd834517f6c6235324bb8c99c6bbb
Signed-off-by: default avatarXiaowen Wu <wxiaowen@codeaurora.org>
parent 5e276334

drivers/gpu/drm/bridge/analogix-anx7625.c

+17 −8
Original line number Diff line number Diff line
@@ -728,7 +728,7 @@ static int anx7625_poweron(struct anx7625 *anx7625) 
	usleep_range(10000, 11000);



	gpiod_set_value_cansleep(pdata->gpiod_reset, 1);

	usleep_range(10000, 11000);

	usleep_range(1000, 1100);



	/* setup clock */

	WriteReg(RX_P0, XTAL_FRQ_SEL, XTAL_FRQ_27M);
@@ -1050,7 +1050,6 @@ static void API_DSI_Configuration(struct anx7625 *anx7625, 
	/*power on MIPI RX*/

	WriteReg(RX_P1, MIPI_LANE_CTRL_10, 0x00);

	WriteReg(RX_P1, MIPI_LANE_CTRL_10, 0x80);

	usleep_range(10000, 11000);

}



static void DSI_Configuration(struct anx7625 *anx7625, unsigned char table_id)
@@ -1099,7 +1098,7 @@ static int anx7625_start(struct anx7625 *anx7625) 
	/* interrupt for DRM*/

	sp_write_reg_or(RX_P1, 0xff, 0x01);



	if (anx7625->mode_idx < 10)

	if (!mipi_compress_ratio(anx7625->mode_idx))

		DSI_Configuration(anx7625, anx7625->mode_idx);

	else

		DSI_DSC_Configuration(anx7625, anx7625->mode_idx);
@@ -1521,7 +1520,7 @@ MODULE_DEVICE_TABLE(of, anx7625_id_match_table); 
#endif



#ifdef CONFIG_PM_SLEEP

static int anx7625_suspend(struct device *dev)

static int anx7625_freeze(struct device *dev)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct anx7625 *anx7625 = i2c_get_clientdata(client);
@@ -1535,7 +1534,7 @@ static int anx7625_suspend(struct device *dev) 
	return 0;

}



static int anx7625_resume(struct device *dev)

static int anx7625_restore(struct device *dev)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct anx7625 *anx7625 = i2c_get_clientdata(client);
@@ -1546,22 +1545,32 @@ static int anx7625_resume(struct device *dev) 


	anx7625_poweron(anx7625);



	if (anx7625->enabled)

	if (anx7625->enabled) {

		/* wait until ocm is initialized */

		usleep_range(10000, 11000);



		anx7625_start(anx7625);

	}



	mutex_unlock(&anx7625->lock);



	return 0;

}

#endif



static SIMPLE_DEV_PM_OPS(anx7625_pm, anx7625_suspend, anx7625_resume);

static const struct dev_pm_ops anx7625_pm = {

	.freeze = anx7625_freeze,

	.restore = anx7625_restore,

	.thaw = anx7625_restore,

};

#endif



static struct i2c_driver anx7625_driver = {

	.driver = {

		.name = "anx7625",

		.owner = THIS_MODULE,

#ifdef CONFIG_PM_SLEEP

		.pm = &anx7625_pm,

#endif

#ifdef CONFIG_OF

		.of_match_table = anx7625_id_match_table,

#endif