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| author | Neelesh Gupta <neelegup@linux.vnet.ibm.com> | 2015-03-13 15:25:33 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2015-03-14 12:08:21 +0100 |
| commit | bf07038051ddd6c1e017cd50933e314040a69b11 (patch) | |
| tree | 0f2c2b27f8b5f757bdd49f64f3e035126492f8c4 | |
| parent | 338f1ab6c4ea60cbc8ee57b78707d4b8d0219519 (diff) | |
| download | blackbird-op-linux-bf07038051ddd6c1e017cd50933e314040a69b11.tar.gz blackbird-op-linux-bf07038051ddd6c1e017cd50933e314040a69b11.zip | |
i2c: opal: Update quirk flags to do write-then-anything
Hardware can do write-then-anything. Activate that.
Signed-off-by: Neelesh Gupta <neelegup@linux.vnet.ibm.com>
[wsa: cosmetic updates]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
| -rw-r--r-- | drivers/i2c/busses/i2c-opal.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/i2c/busses/i2c-opal.c b/drivers/i2c/busses/i2c-opal.c index b2788ecad5b3..75dd6d041241 100644 --- a/drivers/i2c/busses/i2c-opal.c +++ b/drivers/i2c/busses/i2c-opal.c @@ -104,7 +104,8 @@ static int i2c_opal_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, req.buffer_ra = cpu_to_be64(__pa(msgs[0].buf)); break; case 2: - req.type = OPAL_I2C_SM_READ; + req.type = (msgs[1].flags & I2C_M_RD) ? + OPAL_I2C_SM_READ : OPAL_I2C_SM_WRITE; req.addr = cpu_to_be16(msgs[0].addr); req.subaddr_sz = msgs[0].len; for (i = 0; i < msgs[0].len; i++) @@ -199,13 +200,12 @@ static const struct i2c_algorithm i2c_opal_algo = { .functionality = i2c_opal_func, }; -/* For two messages, we basically support only simple - * smbus transactions of a write plus a read. We might - * want to allow also two writes but we'd have to bounce - * the data into a single buffer. +/* + * For two messages, we basically support simple smbus transactions of a + * write-then-anything. */ static struct i2c_adapter_quirks i2c_opal_quirks = { - .flags = I2C_AQ_COMB_WRITE_THEN_READ, + .flags = I2C_AQ_COMB | I2C_AQ_COMB_WRITE_FIRST | I2C_AQ_COMB_SAME_ADDR, .max_comb_1st_msg_len = 4, }; |
