Re: [PATCH 7/9] mfd: tps65218: add version check to the PMIC probe

Keerthy
2016-06-20T08:46:19Z

On Monday 20 June 2016 02:13 PM, Keerthy wrote:
> From: Tero Kristo <t-kristo@ti.com>
>
> Version information will be needed to handle some error cases under the
> regulator driver, so store the information once during MFD probe.

+ Lee Jones.

>
> Signed-off-by: Tero Kristo <t-kristo@ti.com>
> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
> drivers/mfd/tps65218.c | 9 +++++++++
> include/linux/mfd/tps65218.h | 1 +
> 2 files changed, 10 insertions(+)
>
> diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c
> index 80b9dc3..ba610ad 100644
> --- a/drivers/mfd/tps65218.c
> +++ b/drivers/mfd/tps65218.c
> @@ -219,6 +219,7 @@ static int tps65218_probe(struct i2c_client *client,
> struct tps65218 *tps;
> const struct of_device_id *match;
> int ret;
> + unsigned int chipid;
>
> match = of_match_device(of_tps65218_match_table, &client->dev);
> if (!match) {
> @@ -250,6 +251,14 @@ static int tps65218_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
>
> + ret = tps65218_reg_read(tps, TPS65218_REG_CHIPID, &chipid);
> + if (ret) {
> + dev_err(tps->dev, "Failed to read chipid: %d\n", ret);
> + return ret;
> + }
> +
> + tps->rev = chipid & TPS65218_CHIPID_REV_MASK;
> +
> ret = of_platform_populate(client->dev.of_node, NULL, NULL,
> &client->dev);
> if (ret < 0)
> diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h
> index 7fdf532..85e464e 100644
> --- a/include/linux/mfd/tps65218.h
> +++ b/include/linux/mfd/tps65218.h
> @@ -267,6 +267,7 @@ struct tps_info {
> struct tps65218 {
> struct device *dev;
> unsigned int id;
> + u8 rev;
>
> struct mutex tps_lock; /* lock guarding the data structure */
> /* IRQ Data */
>