diff options
Diffstat (limited to 'drivers/power/pmic/pmic_tps65218.c')
| -rw-r--r-- | drivers/power/pmic/pmic_tps65218.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/drivers/power/pmic/pmic_tps65218.c b/drivers/power/pmic/pmic_tps65218.c index b50953bdc12..7c95e5e7580 100644 --- a/drivers/power/pmic/pmic_tps65218.c +++ b/drivers/power/pmic/pmic_tps65218.c @@ -10,6 +10,7 @@ #include <power/pmic.h> #include <power/tps65218.h> +#ifndef CONFIG_DM_I2C int tps65218_reg_read(uchar dest_reg, uchar *dest_val) { uchar read_val; @@ -84,6 +85,76 @@ int tps65218_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val, return 0; } +#else +struct udevice *tps65218_dev __attribute__((section(".data"))) = NULL; + +int tps65218_reg_read(uchar dest_reg, uchar *dest_val) +{ + uchar read_val; + int ret; + + if (!tps65218_dev) + return -ENODEV; + + ret = dm_i2c_read(tps65218_dev, dest_reg, &read_val, 1); + if (ret) + return ret; + + *dest_val = read_val; + + return 0; +} + +int tps65218_reg_write(uchar prot_level, uchar dest_reg, uchar dest_val, + uchar mask) +{ + uchar read_val; + uchar xor_reg; + int ret; + + if (!tps65218_dev) + return -ENODEV; + + /* + * If we are affecting only a bit field, read dest_reg and apply the + * mask + */ + if (mask != TPS65218_MASK_ALL_BITS) { + ret = dm_i2c_read(tps65218_dev, dest_reg, &read_val, 1); + if (ret) + return ret; + + read_val &= (~mask); + read_val |= (dest_val & mask); + dest_val = read_val; + } + + if (prot_level > 0) { + xor_reg = dest_reg ^ TPS65218_PASSWORD_UNLOCK; + ret = dm_i2c_write(tps65218_dev, TPS65218_PASSWORD, &xor_reg, + 1); + if (ret) + return ret; + } + + ret = dm_i2c_write(tps65218_dev, dest_reg, &dest_val, 1); + if (ret) + return ret; + + if (prot_level == TPS65218_PROT_LEVEL_2) { + ret = dm_i2c_write(tps65218_dev, TPS65218_PASSWORD, &xor_reg, + 1); + if (ret) + return ret; + + ret = dm_i2c_write(tps65218_dev, dest_reg, &dest_val, 1); + if (ret) + return ret; + } + + return 0; +} +#endif /** * tps65218_voltage_update() - Function to change a voltage level, as this @@ -154,6 +225,7 @@ int tps65218_lock_fseal(void) return 0; } +#ifndef CONFIG_DM_I2C int power_tps65218_init(unsigned char bus) { static const char name[] = "TPS65218_PMIC"; @@ -173,3 +245,16 @@ int power_tps65218_init(unsigned char bus) return 0; } +#else +int power_tps65218_init(unsigned char bus) +{ + struct udevice *dev = NULL; + int rc; + + rc = i2c_get_chip_for_busnum(bus, TPS65218_CHIP_PM, 1, &dev); + if (rc) + return rc; + tps65218_dev = dev; + return 0; +} +#endif |