[Armadeus-commitlog] armadeus branch, master, updated. armadeus-7.0-27-g71fb15913

[Sébastien S. <ss...@us...>]

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- Log -----------------------------------------------------------------
commit 71fb1591358b555c0d3a1ed1f41700bfa14393a9
Author: Sébastien Szymanski <seb...@ar...>
Date:   Tue Nov 27 12:10:01 2018 +0100

    [LINUX] 4.9.legacy: adv7180: add reset pin control

-----------------------------------------------------------------------

Summary of changes:
 ...adeus-media-adv7180-add-reset-pin-control.patch | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 patches/linux/4.9.mx6_legacy/0812-armadeus-media-adv7180-add-reset-pin-control.patch

diff --git a/patches/linux/4.9.mx6_legacy/0812-armadeus-media-adv7180-add-reset-pin-control.patch b/patches/linux/4.9.mx6_legacy/0812-armadeus-media-adv7180-add-reset-pin-control.patch
new file mode 100644
index 000000000..509260784
--- /dev/null
+++ b/patches/linux/4.9.mx6_legacy/0812-armadeus-media-adv7180-add-reset-pin-control.patch
@@ -0,0 +1,76 @@
+Index: linux-imx_4.9.11_1.0.0_ga/Documentation/devicetree/bindings/media/i2c/adv7180.txt
+===================================================================
+--- linux-imx_4.9.11_1.0.0_ga.orig/Documentation/devicetree/bindings/media/i2c/adv7180.txt
++++ linux-imx_4.9.11_1.0.0_ga/Documentation/devicetree/bindings/media/i2c/adv7180.txt
+@@ -18,6 +18,8 @@ Required Properties :
+ Optional Properties :
+ - powerdown-gpios: reference to the GPIO connected to the powerdown pin,
+   if any.
++- rest-gpios: reference to the GPIO connected to the reset pin,
++  if any.
+ 
+ 
+ Example:
+Index: linux-imx_4.9.11_1.0.0_ga/drivers/media/i2c/adv7180.c
+===================================================================
+--- linux-imx_4.9.11_1.0.0_ga.orig/drivers/media/i2c/adv7180.c
++++ linux-imx_4.9.11_1.0.0_ga/drivers/media/i2c/adv7180.c
+@@ -215,6 +215,7 @@ struct adv7180_state {
+ 	struct mutex		mutex; /* mutual excl. when accessing chip */
+ 	int			irq;
+ 	struct gpio_desc	*pwdn_gpio;
++	struct gpio_desc	*rstn_gpio;
+ 	v4l2_std_id		curr_norm;
+ 	bool			powered;
+ 	bool			streaming;
+@@ -494,6 +495,19 @@ static void adv7180_set_power_pin(struct
+ 	}
+ }
+ 
++static void adv7180_set_reset_pin(struct adv7180_state *state, bool on)
++{
++	if (!state->rstn_gpio)
++		return;
++
++	if (on) {
++		gpiod_set_value_cansleep(state->rstn_gpio, 0);
++		usleep_range(5000, 10000);
++	} else {
++		gpiod_set_value_cansleep(state->rstn_gpio, 1);
++	}
++}
++
+ static int adv7180_set_power(struct adv7180_state *state, bool on)
+ {
+ 	u8 val;
+@@ -1248,6 +1262,7 @@ static int init_device(struct adv7180_st
+ 	mutex_lock(&state->mutex);
+ 
+ 	adv7180_set_power_pin(state, true);
++	adv7180_set_reset_pin(state, true);
+ 
+ 	adv7180_write(state, ADV7180_REG_PWR_MAN, ADV7180_PWR_MAN_RES);
+ 	usleep_range(5000, 10000);
+@@ -1326,6 +1341,14 @@ static int adv7180_probe(struct i2c_clie
+ 		return ret;
+ 	}
+ 
++	state->rstn_gpio = devm_gpiod_get_optional(&client->dev, "reset",
++						   GPIOD_OUT_HIGH);
++	if (IS_ERR(state->rstn_gpio)) {
++		ret = PTR_ERR(state->rstn_gpio);
++		v4l_err(client, "request for reset pin failed: %d\n", ret);
++		return ret;
++	}
++
+ 	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2) {
+ 		state->csi_client = i2c_new_dummy(client->adapter,
+ 				ADV7180_DEFAULT_CSI_I2C_ADDR);
+@@ -1417,6 +1440,7 @@ static int adv7180_remove(struct i2c_cli
+ 	if (state->chip_info->flags & ADV7180_FLAG_MIPI_CSI2)
+ 		i2c_unregister_device(state->csi_client);
+ 
++	adv7180_set_reset_pin(state, false);
+ 	adv7180_set_power_pin(state, false);
+ 
+ 	mutex_destroy(&state->mutex);


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