diff options
| author |   Trent Piepho <tpiepho@impinj.com> | 2018-11-15 18:51:18 +0000 |
|---|---|---|
| committer |   Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-11-22 18:11:37 +0100 |
| commit | facc23b8ff21e9fb328938baf15ae68a91af0cb9 (patch) | |
| tree | cbbcb72d55b7b9a0cad72b079304654f2e994423 /drivers/rtc | |
| parent | rtc: max8997: Fix the returned value in case of error in 'max8997_rtc_read_alarm()' (diff) | |
| download | linux-dev-facc23b8ff21e9fb328938baf15ae68a91af0cb9.tar.xz linux-dev-facc23b8ff21e9fb328938baf15ae68a91af0cb9.zip | |
rtc: isl1208: Use i2c block read/write routines
The Linux i2c layer has functions to execute common SMBUS/I2C
transactions. The register access code here is identical to the I2C
read/write block data routines.
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-isl1208.c | 37 |
1 files changed, 4 insertions, 33 deletions
diff --git a/drivers/rtc/rtc-isl1208.c b/drivers/rtc/rtc-isl1208.c index ec5ef518a09b..37ab3e1d25f5 100644 --- a/drivers/rtc/rtc-isl1208.c +++ b/drivers/rtc/rtc-isl1208.c @@ -84,29 +84,13 @@ static int isl1208_i2c_read_regs(struct i2c_client *client, u8 reg, u8 buf[], unsigned len) { - u8 reg_addr[1] = { reg }; - struct i2c_msg msgs[2] = { - { - .addr = client->addr, - .len = sizeof(reg_addr), - .buf = reg_addr - }, - { - .addr = client->addr, - .flags = I2C_M_RD, - .len = len, - .buf = buf - } - }; int ret; WARN_ON(reg > ISL1219_REG_YRT); WARN_ON(reg + len > ISL1219_REG_YRT + 1); - ret = i2c_transfer(client->adapter, msgs, 2); - if (ret > 0) - ret = 0; - return ret; + ret = i2c_smbus_read_i2c_block_data(client, reg, len, buf); + return (ret < 0) ? ret : 0; } /* block write */ @@ -114,26 +98,13 @@ static int isl1208_i2c_set_regs(struct i2c_client *client, u8 reg, u8 const buf[], unsigned len) { - u8 i2c_buf[ISL1208_REG_USR2 + 2]; - struct i2c_msg msgs[1] = { - { - .addr = client->addr, - .len = len + 1, - .buf = i2c_buf - } - }; int ret; WARN_ON(reg > ISL1219_REG_YRT); WARN_ON(reg + len > ISL1219_REG_YRT + 1); - i2c_buf[0] = reg; - memcpy(&i2c_buf[1], &buf[0], len); - - ret = i2c_transfer(client->adapter, msgs, 1); - if (ret > 0) - ret = 0; - return ret; + ret = i2c_smbus_write_i2c_block_data(client, reg, len, buf); + return (ret < 0) ? ret : 0; } /* simple check to see whether we have a isl1208 */ |