Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 7a9c42cc authored by Tomoya MORINAGA's avatar Tomoya MORINAGA Committed by Ben Dooks
Browse files

i2c-eg20t : Support Combined R/W transfer mode 



Currently, Combined R/W transfer mode is not supported.
This patch enables Combined R/W transfer mode.

Signed-off-by: default avatarTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent 5c470f39

drivers/i2c/busses/i2c-eg20t.c

+20 −19
Original line number Original line Diff line number Diff line
@@ -673,7 +673,8 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap, 
	/* transfer not completed */

	/* transfer not completed */

	adap->pch_i2c_xfer_in_progress = true;

	adap->pch_i2c_xfer_in_progress = true;





	pmsg = &msgs[0];

	for (i = 0; i < num; i++) {

		pmsg = &msgs[i];

		pmsg->flags |= adap->pch_buff_mode_en;

		pmsg->flags |= adap->pch_buff_mode_en;

		status = pmsg->flags;

		status = pmsg->flags;

		pch_dbg(adap,

		pch_dbg(adap,
@@ -684,15 +685,15 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap, 
		/* calculate actual message length excluding

		/* calculate actual message length excluding

		 * the sub address fields */

		 * the sub address fields */

		msglen = (pmsg->len) - (subaddrlen + 1);

		msglen = (pmsg->len) - (subaddrlen + 1);

	if (status & (I2C_M_RD)) {



		pch_dbg(adap, "invoking pch_i2c_readbytes\n");

		if ((status & (I2C_M_RD)) != false) {

			ret = pch_i2c_readbytes(i2c_adap, pmsg, (i + 1 == num),

			ret = pch_i2c_readbytes(i2c_adap, pmsg, (i + 1 == num),

						(i == 0));

						(i == 0));

		} else {

		} else {

		pch_dbg(adap, "invoking pch_i2c_writebytes\n");

			ret = pch_i2c_writebytes(i2c_adap, pmsg, (i + 1 == num),

			ret = pch_i2c_writebytes(i2c_adap, pmsg, (i + 1 == num),

						 (i == 0));

						 (i == 0));

		}

		}

	}





	adap->pch_i2c_xfer_in_progress = false;	/* transfer completed */

	adap->pch_i2c_xfer_in_progress = false;	/* transfer completed */