diff mbox series

[v2,8/9] mfd: mt6360: Fix flow which is used to check ic exist

Message ID 1594983811-25908-9-git-send-email-gene.chen.richtek@gmail.com
State New, archived
Headers show
Series mfd: mt6360: Merge different sub-devices i2c read/write | expand

Commit Message

Gene Chen July 17, 2020, 11:03 a.m. UTC
From: Gene Chen <gene_chen@richtek.com>

Fix flow which is used to check ic exist.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
---
 drivers/mfd/mt6360-core.c | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)

Comments

Lee Jones July 27, 2020, 12:26 p.m. UTC | #1
On Fri, 17 Jul 2020, Gene Chen wrote:

> From: Gene Chen <gene_chen@richtek.com>
> 
> Fix flow which is used to check ic exist.
> 
> Signed-off-by: Gene Chen <gene_chen@richtek.com>
> ---
>  drivers/mfd/mt6360-core.c | 28 +++++++++++++++++++---------
>  1 file changed, 19 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
> index 5a68228..3186a7c 100644
> --- a/drivers/mfd/mt6360-core.c
> +++ b/drivers/mfd/mt6360-core.c
> @@ -293,6 +293,23 @@ static const struct mfd_cell mt6360_devs[] = {
>  		    NULL, 0, 0, "mediatek,mt6360-tcpc"),
>  };
>  
> +static int mt6360_check_vendor_info(struct mt6360_data *data)
> +{
> +	u32 info;
> +	int ret;
> +
> +	ret = regmap_read(data->regmap, MT6360_PMU_DEV_INFO, &info);
> +	if (ret < 0)
> +		return ret;
> +
> +	if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360)
> +		return -ENODEV;
> +
> +	data->chip_rev = info & CHIP_REV_MASK;
> +
> +	return 0;
> +}
> +
>  static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
>  	MT6360_PMU_SLAVEID,
>  	MT6360_PMIC_SLAVEID,
> @@ -303,7 +320,6 @@ static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
>  static int mt6360_probe(struct i2c_client *client)
>  {
>  	struct mt6360_data *data;
> -	unsigned int reg_data;
>  	int i, ret;
>  
>  	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
> @@ -319,16 +335,10 @@ static int mt6360_probe(struct i2c_client *client)
>  		return PTR_ERR(data->regmap);
>  	}
>  
> -	ret = regmap_read(data->regmap, MT6360_PMU_DEV_INFO, &reg_data);
> +	ret = mt6360_check_vendor_info(data);
>  	if (ret) {
> -		dev_err(&client->dev, "Device not found\n");
> -		return ret;
> -	}
> -
> -	data->chip_rev = reg_data & CHIP_REV_MASK;
> -	if (data->chip_rev != CHIP_VEN_MT6360) {
>  		dev_err(&client->dev, "Device not supported\n");

Can you move this into mt6360_check_vendor_info() too please?

> -		return -ENODEV;
> +		return ret;
>  	}
>  
>  	ret = devm_regmap_add_irq_chip(&client->dev, data->regmap, client->irq,
diff mbox series

Patch

diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
index 5a68228..3186a7c 100644
--- a/drivers/mfd/mt6360-core.c
+++ b/drivers/mfd/mt6360-core.c
@@ -293,6 +293,23 @@  static const struct mfd_cell mt6360_devs[] = {
 		    NULL, 0, 0, "mediatek,mt6360-tcpc"),
 };
 
+static int mt6360_check_vendor_info(struct mt6360_data *data)
+{
+	u32 info;
+	int ret;
+
+	ret = regmap_read(data->regmap, MT6360_PMU_DEV_INFO, &info);
+	if (ret < 0)
+		return ret;
+
+	if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360)
+		return -ENODEV;
+
+	data->chip_rev = info & CHIP_REV_MASK;
+
+	return 0;
+}
+
 static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
 	MT6360_PMU_SLAVEID,
 	MT6360_PMIC_SLAVEID,
@@ -303,7 +320,6 @@  static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
 static int mt6360_probe(struct i2c_client *client)
 {
 	struct mt6360_data *data;
-	unsigned int reg_data;
 	int i, ret;
 
 	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
@@ -319,16 +335,10 @@  static int mt6360_probe(struct i2c_client *client)
 		return PTR_ERR(data->regmap);
 	}
 
-	ret = regmap_read(data->regmap, MT6360_PMU_DEV_INFO, &reg_data);
+	ret = mt6360_check_vendor_info(data);
 	if (ret) {
-		dev_err(&client->dev, "Device not found\n");
-		return ret;
-	}
-
-	data->chip_rev = reg_data & CHIP_REV_MASK;
-	if (data->chip_rev != CHIP_VEN_MT6360) {
 		dev_err(&client->dev, "Device not supported\n");
-		return -ENODEV;
+		return ret;
 	}
 
 	ret = devm_regmap_add_irq_chip(&client->dev, data->regmap, client->irq,