diff options
| author | Matt Ranostay <matt@ranostay.consulting> | 2017-06-07 21:37:54 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.co.uk> | 2017-06-08 17:29:29 +0300 |
| commit | 14073f6614f62dc7862c83575b042424599cc867 (patch) | |
| tree | 9c06ffc1a43d767df4d085147c32450899ac81d5 /drivers/power/supply/bq27xxx_battery.c | |
| parent | e2517f3bb44b1ac3772858f4bca0be05d36f492d (diff) | |
| download | linux-14073f6614f62dc7862c83575b042424599cc867.tar.xz | |
power: supply: bq27xxx: Add bulk transfer bus methods
Declare bus.write/read_bulk/write_bulk().
Add I2C write/read_bulk/write_bulk() to implement the above.
Add bq27xxx_write/read_block/write_block() helpers to call the above.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Acked-by: "Andrew F. Davis" <afd@ti.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'drivers/power/supply/bq27xxx_battery.c')
| -rw-r--r-- | drivers/power/supply/bq27xxx_battery.c | 67 |
1 files changed, 65 insertions, 2 deletions
diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index 398801a21b86..a11dfad76ed4 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -794,11 +794,74 @@ MODULE_PARM_DESC(poll_interval, static inline int bq27xxx_read(struct bq27xxx_device_info *di, int reg_index, bool single) { - /* Reports EINVAL for invalid/missing registers */ + int ret; + if (!di || di->regs[reg_index] == INVALID_REG_ADDR) return -EINVAL; - return di->bus.read(di, di->regs[reg_index], single); + ret = di->bus.read(di, di->regs[reg_index], single); + if (ret < 0) + dev_dbg(di->dev, "failed to read register 0x%02x (index %d)\n", + di->regs[reg_index], reg_index); + + return ret; +} + +static inline int bq27xxx_write(struct bq27xxx_device_info *di, int reg_index, + u16 value, bool single) +{ + int ret; + + if (!di || di->regs[reg_index] == INVALID_REG_ADDR) + return -EINVAL; + + if (!di->bus.write) + return -EPERM; + + ret = di->bus.write(di, di->regs[reg_index], value, single); + if (ret < 0) + dev_dbg(di->dev, "failed to write register 0x%02x (index %d)\n", + di->regs[reg_index], reg_index); + + return ret; +} + +static inline int bq27xxx_read_block(struct bq27xxx_device_info *di, int reg_index, + u8 *data, int len) +{ + int ret; + + if (!di || di->regs[reg_index] == INVALID_REG_ADDR) + return -EINVAL; + + if (!di->bus.read_bulk) + return -EPERM; + + ret = di->bus.read_bulk(di, di->regs[reg_index], data, len); + if (ret < 0) + dev_dbg(di->dev, "failed to read_bulk register 0x%02x (index %d)\n", + di->regs[reg_index], reg_index); + + return ret; +} + +static inline int bq27xxx_write_block(struct bq27xxx_device_info *di, int reg_index, + u8 *data, int len) +{ + int ret; + + if (!di || di->regs[reg_index] == INVALID_REG_ADDR) + return -EINVAL; + + if (!di->bus.write_bulk) + return -EPERM; + + ret = di->bus.write_bulk(di, di->regs[reg_index], data, len); + if (ret < 0) + dev_dbg(di->dev, "failed to write_bulk register 0x%02x (index %d)\n", + di->regs[reg_index], reg_index); + + return ret; } /* |