65 lines
1.8 KiB
Diff
65 lines
1.8 KiB
Diff
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From f1a5efacbc00f49c378234f77029c0c60f46e51f Mon Sep 17 00:00:00 2001
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From: brian <brian@vamrs.com>
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Date: Mon, 19 Nov 2018 17:27:05 +0800
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Subject: [PATCH 11/97] add imx219 power down gpio control
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Change-Id: I7f2cabaf82a4b936ac6da3fd5ffbecf95930d093
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---
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drivers/media/i2c/imx219.c | 18 ++++++++++++++++++
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1 file changed, 18 insertions(+)
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diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
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index a05d5e9fabc2..b9434d1909a5 100644
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--- a/drivers/media/i2c/imx219.c
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+++ b/drivers/media/i2c/imx219.c
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@@ -16,6 +16,7 @@
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#include <linux/of_graph.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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+#include <linux/gpio/consumer.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-fwnode.h>
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@@ -215,6 +216,7 @@ struct imx219 {
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struct media_pad pad;
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struct v4l2_ctrl_handler ctrl_handler;
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struct clk *clk;
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+ struct gpio_desc *pwdn_gpio;
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struct v4l2_rect crop_rect;
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int hflip;
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int vflip;
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@@ -411,7 +413,17 @@ static int imx219_s_power(struct v4l2_subdev *sd, int on)
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if (on) {
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dev_dbg(&client->dev, "imx219 power on\n");
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clk_prepare_enable(priv->clk);
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+
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+ if(!IS_ERR(priv->pwdn_gpio)) {
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+ gpiod_set_value_cansleep(priv->pwdn_gpio, 1);
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+ msleep(10);
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+ }
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} else if (!on) {
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+
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+ if(!IS_ERR(priv->pwdn_gpio)) {
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+ gpiod_set_value_cansleep(priv->pwdn_gpio, 0);
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+ }
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+
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dev_dbg(&client->dev, "imx219 power off\n");
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clk_disable_unprepare(priv->clk);
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}
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@@ -893,6 +905,12 @@ static int imx219_probe(struct i2c_client *client,
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return -EPROBE_DEFER;
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}
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+ priv->pwdn_gpio = devm_gpiod_get(&client->dev, "pwdn", GPIOD_OUT_LOW);
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+ if (IS_ERR(priv->pwdn_gpio))
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+ dev_info(&client->dev, "Failed to get pwdn-gpios\n");
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+
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+ gpiod_set_value_cansleep(priv->pwdn_gpio, 1);
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+ msleep(5);
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/* 1920 * 1080 by default */
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priv->cur_mode = &supported_modes[0];
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--
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2.25.1
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