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Commit bf070380 authored by Neelesh Gupta's avatar Neelesh Gupta Committed by Wolfram Sang
Browse files

i2c: opal: Update quirk flags to do write-then-anything 



Hardware can do write-then-anything. Activate that.

Signed-off-by: default avatarNeelesh Gupta <neelegup@linux.vnet.ibm.com>
[wsa: cosmetic updates]
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 338f1ab6

drivers/i2c/busses/i2c-opal.c

+6 −6
Original line number Diff line number Diff line
@@ -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,

};