Currently, Combined R/W transfer mode is not supported.
This patch enables Combined R/W transfer mode.
Signed-off-by: Tomoya MORINAGA <tomoya-linux@xxxxxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-eg20t.c | 39 ++++++++++++++++++++-------------------
1 files changed, 20 insertions(+), 19 deletions(-)
diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index 838c21f..b2f94dc 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -672,25 +672,26 @@ static s32 pch_i2c_xfer(struct i2c_adapter *i2c_adap,
/* transfer not completed */
adap->pch_i2c_xfer_in_progress = true;
- pmsg = &msgs[0];
- pmsg->flags |= adap->pch_buff_mode_en;
- status = pmsg->flags;
- pch_dbg(adap,
- "After invoking I2C_MODE_SEL :flag= 0x%x\n", status);
- /* calculate sub address length and message length */
- /* these are applicable only for buffer mode */
- subaddrlen = pmsg->buf[0];
- /* calculate actual message length excluding
- * the sub address fields */
- msglen = (pmsg->len) - (subaddrlen + 1);
- if (status & (I2C_M_RD)) {
- pch_dbg(adap, "invoking pch_i2c_readbytes\n");
- ret = pch_i2c_readbytes(i2c_adap, pmsg, (i + 1 == num),
- (i == 0));
- } else {
- pch_dbg(adap, "invoking pch_i2c_writebytes\n");
- ret = pch_i2c_writebytes(i2c_adap, pmsg, (i + 1 == num),
- (i == 0));
+ for (i = 0; i < num; i++) {
+ pmsg = &msgs[i];
+ pmsg->flags |= adap->pch_buff_mode_en;
+ status = pmsg->flags;
+ pch_dbg(adap,
+ "After invoking I2C_MODE_SEL :flag= 0x%x\n", status);
+ /* calculate sub address length and message length */
+ /* these are applicable only for buffer mode */
+ subaddrlen = pmsg->buf[0];
+ /* calculate actual message length excluding
+ * the sub address fields */
+ msglen = (pmsg->len) - (subaddrlen + 1);
+
+ if ((status & (I2C_M_RD)) != false) {
+ ret = pch_i2c_readbytes(i2c_adap, pmsg, (i + 1 == num),
+ (i == 0));
+ } else {
+ ret = pch_i2c_writebytes(i2c_adap, pmsg, (i + 1 == num),
+ (i == 0));
+ }
}
adap->pch_i2c_xfer_in_progress = false; /* transfer completed */
--
1.7.4
--
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