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[PATCH v2 4/5] mfd: tps65218: add version check to the PMIC probe

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  [PATCH v2 4/5] mfd: tps65218: add version check to the PMIC probe Keerthy <j-keerthy@ti.com> - 2016-06-24 10:30 +0200
    Re: [PATCH v2 4/5] mfd: tps65218: add version check to the PMIC probe Lee Jones <lee.jones@linaro.org> - 2016-06-28 13:20 +0200

#1430457 — [PATCH v2 4/5] mfd: tps65218: add version check to the PMIC probe

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.

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 */
-- 
1.9.1

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#1432873

On Fri, 24 Jun 2016, 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.
> 
> 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(+)

Acked-by: Lee Jones <lee.jones@linaro.org>

> 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 */

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

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