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| author | Benjamin Bara <benjamin.bara@skidata.com> | 2023-07-15 09:53:26 +0200 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-07-28 12:33:14 +0200 |
| commit | 8bd141b17cedcbcb7d336df6e0462e4f4a528ab1 (patch) | |
| tree | d1cc42826a881a7a76e9b95cd20901eebb80fcd6 /drivers/mfd | |
| parent | kernel/reboot: Add device to sys_off_handler (diff) | |
| download | linux-8bd141b17cedcbcb7d336df6e0462e4f4a528ab1.tar.xz linux-8bd141b17cedcbcb7d336df6e0462e4f4a528ab1.zip | |
mfd: tps6586x: Use devm-based power off handler
Convert the power off handler to a devm-based power off handler.
Reviewed-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com>
Link: https://lore.kernel.org/r/20230327-tegra-pmic-reboot-v7-4-18699d5dcd76@skidata.com
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/tps6586x.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 55675ceedcd3..965065562de6 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -22,6 +22,7 @@ #include <linux/err.h> #include <linux/i2c.h> #include <linux/platform_device.h> +#include <linux/reboot.h> #include <linux/regmap.h> #include <linux/of.h> @@ -457,13 +458,21 @@ static const struct regmap_config tps6586x_regmap_config = { .cache_type = REGCACHE_RBTREE, }; -static struct device *tps6586x_dev; -static void tps6586x_power_off(void) +static int tps6586x_power_off_handler(struct sys_off_data *data) { - if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT)) - return; + int ret; + + /* Put the PMIC into sleep state. This takes at least 20ms. */ + ret = tps6586x_clr_bits(data->dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT); + if (ret) + return notifier_from_errno(ret); + + ret = tps6586x_set_bits(data->dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT); + if (ret) + return notifier_from_errno(ret); - tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT); + mdelay(50); + return notifier_from_errno(-ETIME); } static void tps6586x_print_version(struct i2c_client *client, int version) @@ -559,9 +568,13 @@ static int tps6586x_i2c_probe(struct i2c_client *client) goto err_add_devs; } - if (pdata->pm_off && !pm_power_off) { - tps6586x_dev = &client->dev; - pm_power_off = tps6586x_power_off; + if (pdata->pm_off) { + ret = devm_register_power_off_handler(&client->dev, &tps6586x_power_off_handler, + NULL); + if (ret) { + dev_err(&client->dev, "register power off handler failed: %d\n", ret); + goto err_add_devs; + } } return 0; |