Rudraksha Gupta
4b5d202c15
Signed-off-by: Rudraksha Gupta <guptarud@gmail.com> Part-of: <https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/9440>
70 lines
1.9 KiB
Diff
70 lines
1.9 KiB
Diff
From 3cf19a88ab0104cbb71efbd2a841f06d933eb38d Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megi@xff.cz>
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Date: Mon, 9 Sep 2024 16:49:41 +0200
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Subject: [PATCH 02/90] media: imx258: Add reset gpio
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IMX258 features a reset input that needs to be controlled when powering
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up the chip.
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Signed-off-by: Ondrej Jirman <megi@xff.cz>
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---
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drivers/media/i2c/imx258.c | 15 +++++++++++++++
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1 file changed, 15 insertions(+)
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diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
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index 7bfe127daf60..16cabbea9074 100644
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--- a/drivers/media/i2c/imx258.c
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+++ b/drivers/media/i2c/imx258.c
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@@ -681,6 +681,7 @@ struct imx258 {
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struct mutex mutex;
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struct clk *clk;
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+ struct gpio_desc *reset_gpio;
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struct regulator_bulk_data supplies[IMX258_NUM_SUPPLIES];
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};
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@@ -1125,12 +1126,20 @@ static int imx258_power_on(struct device *dev)
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return ret;
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}
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+ mdelay(20);
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+
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ret = clk_prepare_enable(imx258->clk);
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if (ret) {
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dev_err(dev, "failed to enable clock\n");
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regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
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}
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+ usleep_range(1000, 2000);
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+
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+ gpiod_set_value_cansleep(imx258->reset_gpio, 0);
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+
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+ usleep_range(400, 500);
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+
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return ret;
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}
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@@ -1140,6 +1149,7 @@ static int imx258_power_off(struct device *dev)
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struct imx258 *imx258 = to_imx258(sd);
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clk_disable_unprepare(imx258->clk);
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+ gpiod_set_value_cansleep(imx258->reset_gpio, 1);
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regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
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return 0;
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@@ -1388,6 +1398,11 @@ static int imx258_probe(struct i2c_client *client)
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return dev_err_probe(imx258->dev, ret,
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"failed to get regulators\n");
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+ imx258->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
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+ GPIOD_OUT_HIGH);
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+ if (IS_ERR(imx258->reset_gpio))
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+ return PTR_ERR(imx258->reset_gpio);
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+
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imx258->clk = devm_v4l2_sensor_clk_get_legacy(imx258->dev, NULL, false,
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0);
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if (IS_ERR(imx258->clk))
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--
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2.55.0
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