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20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
110 lines
3.1 KiB
Diff
110 lines
3.1 KiB
Diff
From 518075a2587a30a5fb67f2d76e576caf230a4105 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Tue, 15 Jun 2021 18:45:40 +0100
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Subject: [PATCH] media: i2c: imx258: Add regulator control
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The device tree bindings define the relevant regulators for the
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sensor, so update the driver to request the regulators and control
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them at the appropriate times.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/media/i2c/imx258.c | 42 +++++++++++++++++++++++++++++++++++++-
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1 file changed, 41 insertions(+), 1 deletion(-)
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--- a/drivers/media/i2c/imx258.c
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+++ b/drivers/media/i2c/imx258.c
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@@ -7,6 +7,7 @@
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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+#include <linux/regulator/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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@@ -524,6 +525,16 @@ static const char * const imx258_test_pa
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"Pseudorandom Sequence (PN9)",
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};
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+/* regulator supplies */
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+static const char * const imx258_supply_name[] = {
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+ /* Supplies can be enabled in any order */
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+ "vana", /* Analog (2.8V) supply */
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+ "vdig", /* Digital Core (1.05V) supply */
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+ "vif", /* IF (1.8V) supply */
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+};
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+
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+#define IMX258_NUM_SUPPLIES ARRAY_SIZE(imx258_supply_name)
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+
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/* Configurations for supported link frequencies */
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#define IMX258_LINK_FREQ_634MHZ 633600000ULL
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#define IMX258_LINK_FREQ_320MHZ 320000000ULL
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@@ -633,6 +644,7 @@ struct imx258 {
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bool streaming;
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struct clk *clk;
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+ struct regulator_bulk_data supplies[IMX258_NUM_SUPPLIES];
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};
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static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd)
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@@ -1030,9 +1042,19 @@ static int imx258_power_on(struct device
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struct imx258 *imx258 = to_imx258(sd);
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int ret;
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+ ret = regulator_bulk_enable(IMX258_NUM_SUPPLIES,
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+ imx258->supplies);
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+ if (ret) {
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+ dev_err(dev, "%s: failed to enable regulators\n",
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+ __func__);
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+ return ret;
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+ }
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+
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ret = clk_prepare_enable(imx258->clk);
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- if (ret)
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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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return ret;
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}
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@@ -1043,6 +1065,7 @@ static int imx258_power_off(struct devic
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struct imx258 *imx258 = to_imx258(sd);
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clk_disable_unprepare(imx258->clk);
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+ regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
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return 0;
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}
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@@ -1285,6 +1308,19 @@ static void imx258_free_controls(struct
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mutex_destroy(&imx258->mutex);
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}
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+static int imx258_get_regulators(struct imx258 *imx258,
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+ struct i2c_client *client)
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+{
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+ unsigned int i;
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+
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+ for (i = 0; i < IMX258_NUM_SUPPLIES; i++)
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+ imx258->supplies[i].supply = imx258_supply_name[i];
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+
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+ return devm_regulator_bulk_get(&client->dev,
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+ IMX258_NUM_SUPPLIES,
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+ imx258->supplies);
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+}
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+
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static int imx258_probe(struct i2c_client *client)
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{
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struct imx258 *imx258;
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@@ -1295,6 +1331,10 @@ static int imx258_probe(struct i2c_clien
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if (!imx258)
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return -ENOMEM;
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+ ret = imx258_get_regulators(imx258, client);
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+ if (ret)
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+ return ret;
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+
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imx258->clk = devm_clk_get_optional(&client->dev, NULL);
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if (IS_ERR(imx258->clk))
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return dev_err_probe(&client->dev, PTR_ERR(imx258->clk),
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