diff options
| author | Zhou Jingyu <b02241@freescale.com> | 2011-05-13 16:09:11 +0800 |
|---|---|---|
| committer | Lily Zhang <r58066@freescale.com> | 2011-05-18 14:24:33 +0800 |
| commit | 0016bfc6ced64572c6352a24cdd4ddf76ad14983 (patch) | |
| tree | c19add065547f1428d7f7b9116afdc2f11ecbf94 | |
| parent | 165df9e8d525082e70a165516e2bcd1d0529b148 (diff) | |
ENGR00143396-1 Add DA9053 version detection
Add DA9053 version detection
Signed-off-by: Zhou Jingyu <Jingyu.Zhou@freescale.com>
| -rw-r--r-- | drivers/mfd/da9052-core.c | 21 | ||||
| -rw-r--r-- | include/linux/mfd/da9052/da9052.h | 5 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c index a9b620320902..42019221ec53 100644 --- a/drivers/mfd/da9052-core.c +++ b/drivers/mfd/da9052-core.c @@ -496,6 +496,22 @@ int da9052_ssc_init(struct da9052 *da9052) ssc_msg.addr = DA9052_IRQMASKC_REG; ssc_msg.data = 0xff; da9052->write(da9052, &ssc_msg); + + /* read chip version */ + ssc_msg.addr = DA9052_CHIPID_REG; + da9052->read(da9052, &ssc_msg); + pr_info("DA9053 chip ID reg read=0x%x ", ssc_msg.data); + if ((ssc_msg.data & DA9052_CHIPID_MRC) == 0x80) { + da9052->chip_version = DA9053_VERSION_AA; + pr_info("AA version probed\n"); + } else if ((ssc_msg.data & DA9052_CHIPID_MRC) == 0xf0) { + da9052->chip_version = DA9053_VERSION_BB; + pr_info("BB version probed\n"); + } else { + da9052->chip_version = 0; + pr_info("unknown chip version\n"); + } + if (request_irq(da9052->irq, da9052_eh_isr, IRQ_TYPE_LEVEL_LOW, DA9052_EH_DEVICE_NAME, da9052)) return -EIO; @@ -533,6 +549,11 @@ void da9053_power_off(void) da9052_data->read(da9052_data, &ssc_msg); } +int da9053_get_chip_version(void) +{ + return da9052_data->chip_version; +} + MODULE_AUTHOR("Dialog Semiconductor Ltd <dchen@diasemi.com>"); MODULE_DESCRIPTION("DA9052 MFD Core"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/da9052/da9052.h b/include/linux/mfd/da9052/da9052.h index 0ff9693ee387..5680a83a3324 100644 --- a/include/linux/mfd/da9052/da9052.h +++ b/include/linux/mfd/da9052/da9052.h @@ -75,6 +75,9 @@ #define DA9052_SSC_I2C_REPEAT_WRITE_MODE 1 #define DA9052_SSC_I2C_WRITE_MODE DA9052_SSC_I2C_REPEAT_WRITE_MODE +#define DA9053_VERSION_AA 1 +#define DA9053_VERSION_BB 2 + struct da9052_ssc_msg { unsigned char data; unsigned char addr; @@ -162,6 +165,7 @@ struct da9052 { struct device *dev; struct i2c_adapter *adapter; unsigned char slave_addr; + int chip_version; }; struct da9052_platform_data { @@ -226,4 +230,5 @@ int eh_unregister_nb(struct da9052 *da9052, struct da9052_eh_nb *nb); int da9052_manual_read(struct da9052 *da9052, unsigned char channel); void da9053_power_off(void); +int da9053_get_chip_version(void); #endif /* __LINUX_MFD_DA9052_DA9052_H */ |