Messages in this thread Patch in this message | | | From | Gene Chen <> | Subject | [PATCH v2 8/9] mfd: mt6360: Fix flow which is used to check ic exist | Date | Fri, 17 Jul 2020 19:03:30 +0800 |
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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, ®_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, -- 2.7.4
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