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| author | Gene Chen <gene_chen@richtek.com> | 2021-05-18 01:33:12 +0800 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2021-06-02 10:50:02 +0100 |
| commit | e84702940613accd46e4cee46c287badd59b7628 (patch) | |
| tree | a5008924a3f1487126e8c0079b48de2af1c62994 /drivers/mfd/mt6360-core.c | |
| parent | a75a2d56dc2f1a95a0b481eec74f60ff81a1b291 (diff) | |
| download | linux-e84702940613accd46e4cee46c287badd59b7628.tar.gz linux-e84702940613accd46e4cee46c287badd59b7628.tar.bz2 linux-e84702940613accd46e4cee46c287badd59b7628.zip | |
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>
Diffstat (limited to 'drivers/mfd/mt6360-core.c')
| -rw-r--r-- | drivers/mfd/mt6360-core.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c index 50a170065a98..cdd99770f94a 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(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] = { 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, ®_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, |