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Subject[PATCH v5 08/10] mfd: mt6360: Fix flow which is used to check ic exist
Date
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>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
drivers/mfd/mt6360-core.c | 32 +++++++++++++++++++++-----------
1 file changed, 21 insertions(+), 11 deletions(-)

diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
index 2356d99..677c974 100644
--- a/drivers/mfd/mt6360-core.c
+++ b/drivers/mfd/mt6360-core.c
@@ -293,6 +293,25 @@ static const struct mfd_cell mt6360_devs[] = {
NULL, 0, 0, "mediatek,mt6360-tcpc"),
};

+static int mt6360_check_vendor_info(struct mt6360_ddata *ddata)
+{
+ u32 info;
+ int ret;
+
+ ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &info);
+ if (ret < 0)
+ return ret;
+
+ if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360) {
+ dev_err(&client->dev, "Device not supported\n");
+ return -ENODEV;
+ }
+
+ ddata->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 +322,6 @@ static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
static int mt6360_probe(struct i2c_client *client)
{
struct mt6360_ddata *ddata;
- unsigned int reg_data;
int i, ret;

ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL);
@@ -319,17 +337,9 @@ static int mt6360_probe(struct i2c_client *client)
return PTR_ERR(ddata->regmap);
}

- ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &reg_data);
- if (ret) {
- dev_err(&client->dev, "Device not found\n");
+ ret = mt6360_check_vendor_info(ddata);
+ if (ret)
return ret;
- }
-
- ddata->chip_rev = reg_data & CHIP_REV_MASK;
- if (ddata->chip_rev != CHIP_VEN_MT6360) {
- dev_err(&client->dev, "Device not supported\n");
- return -ENODEV;
- }

ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq,
0, 0, &mt6360_irq_chip,
--
2.7.4
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