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mfd: mt6360: Fix flow which is used to check ic exist 

Fix flow which is used to check ic exist.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Gene Chen 2021-05-18 01:33:12 +08:00 committed by Lee Jones
parent a75a2d56dc
commit e847029406
1 changed files with 21 additions and 11 deletions
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32
drivers/mfd/mt6360-core.c
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@ -293,6 +293,25 @@ static const struct mfd_cell mt6360_devs[] = {
NULL, 0, 0, "mediatek,mt6360-tcpc"), 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(ddata->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] = { static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = {
MT6360_PMU_SLAVEID, MT6360_PMU_SLAVEID,
MT6360_PMIC_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) static int mt6360_probe(struct i2c_client *client)
{ {
struct mt6360_ddata *ddata; struct mt6360_ddata *ddata;
unsigned int reg_data;
int i, ret; int i, ret;
ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL); 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); return PTR_ERR(ddata->regmap);
} }
ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &reg_data); ret = mt6360_check_vendor_info(ddata);
if (ret) { if (ret)
dev_err(&client->dev, "Device not found\n");
return 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, ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq,
0, 0, &mt6360_irq_chip, 0, 0, &mt6360_irq_chip,