clk: clk-cdce925: Add regulator support (d69d0b43) · Commits · 戴 / test

drivers/clk/clk-cdce925.c

+34 −0

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@
		#include <linux/module.h>
		#include <linux/i2c.h>
		#include <linux/regmap.h>
		#include <linux/regulator/consumer.h>
		#include <linux/slab.h>
		#include <linux/gcd.h>

		@@ -602,6 +603,30 @@ of_clk_cdce925_get(struct of_phandle_args clkspec, void _data)
		return &data->clk[idx].hw;
		}

		static void cdce925_regulator_disable(void *regulator)
		{
		regulator_disable(regulator);
		}

		static int cdce925_regulator_enable(struct device dev, const char name)
		{
		struct regulator *regulator;
		int err;

		regulator = devm_regulator_get(dev, name);
		if (IS_ERR(regulator))
		return PTR_ERR(regulator);

		err = regulator_enable(regulator);
		if (err) {
		dev_err(dev, "Failed to enable %s: %d\n", name, err);
		return err;
		}

		return devm_add_action_or_reset(dev, cdce925_regulator_disable,
		regulator);
		}

		/* The CDCE925 uses a funky way to read/write registers. Bulk mode is
		* just weird, so just use the single byte mode exclusively. */
		static struct regmap_bus regmap_cdce925_bus = {
		@@ -630,6 +655,15 @@ static int cdce925_probe(struct i2c_client *client,
		};

		dev_dbg(&client->dev, "%s\n", __func__);

		err = cdce925_regulator_enable(&client->dev, "vdd");
		if (err)
		return err;

		err = cdce925_regulator_enable(&client->dev, "vddout");
		if (err)
		return err;

		data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
		if (!data)
		return -ENOMEM;