Handle Master aborted error by flushing tx and rx fifo
and reinitializing the hw.
Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@xxxxxxxxxxxx>
Acked-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
---
drivers/i2c/busses/i2c-bcm-iproc.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-bcm-iproc.c b/drivers/i2c/busses/i2c-bcm-iproc.c
index d8295b1c379d..834a98caeada 100644
--- a/drivers/i2c/busses/i2c-bcm-iproc.c
+++ b/drivers/i2c/busses/i2c-bcm-iproc.c
@@ -93,6 +93,7 @@
#define S_CMD_STATUS_MASK 0x07
#define S_CMD_STATUS_SUCCESS 0x0
#define S_CMD_STATUS_TIMEOUT 0x5
+#define S_CMD_STATUS_MASTER_ABORT 0x7
#define IE_OFFSET 0x38
#define IE_M_RX_FIFO_FULL_SHIFT 31
@@ -311,9 +312,10 @@ static void bcm_iproc_i2c_check_slave_status(
return;
val = (val >> S_CMD_STATUS_SHIFT) & S_CMD_STATUS_MASK;
- if (val == S_CMD_STATUS_TIMEOUT) {
- dev_err(iproc_i2c->device, "slave random stretch time timeout\n");
-
+ if (val == S_CMD_STATUS_TIMEOUT || val == S_CMD_STATUS_MASTER_ABORT) {
+ dev_err(iproc_i2c->device, (val == S_CMD_STATUS_TIMEOUT) ?
+ "slave random stretch time timeout\n" :
+ "Master aborted read transaction\n");
/* re-initialize i2c for recovery */
bcm_iproc_i2c_enable_disable(iproc_i2c, false);
bcm_iproc_i2c_slave_init(iproc_i2c, true);
--
2.17.1
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