Messages in this thread Patch in this message | | | From | Ray Jui <> | Subject | [PATCH v6 3/9] i2c: iproc: Add support for more master error status | Date | Tue, 2 Apr 2019 18:18:24 -0700 |
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From: Michael Cheng <ccheng@broadcom.com>
Add support for more master error status including FIFO underrun and RX FIFO full
Signed-off-by: Michael Cheng <ccheng@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> --- drivers/i2c/busses/i2c-bcm-iproc.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/i2c/busses/i2c-bcm-iproc.c b/drivers/i2c/busses/i2c-bcm-iproc.c index 915c1b5aafd8..d64876cfa11c 100644 --- a/drivers/i2c/busses/i2c-bcm-iproc.c +++ b/drivers/i2c/busses/i2c-bcm-iproc.c @@ -73,6 +73,8 @@ #define M_CMD_STATUS_NACK_ADDR 0x2 #define M_CMD_STATUS_NACK_DATA 0x3 #define M_CMD_STATUS_TIMEOUT 0x4 +#define M_CMD_STATUS_FIFO_UNDERRUN 0x5 +#define M_CMD_STATUS_RX_FIFO_FULL 0x6 #define M_CMD_PROTOCOL_SHIFT 9 #define M_CMD_PROTOCOL_MASK 0xf #define M_CMD_PROTOCOL_BLK_WR 0x7 @@ -536,6 +538,14 @@ static int bcm_iproc_i2c_check_status(struct bcm_iproc_i2c_dev *iproc_i2c, dev_dbg(iproc_i2c->device, "bus timeout\n"); return -ETIMEDOUT; + case M_CMD_STATUS_FIFO_UNDERRUN: + dev_dbg(iproc_i2c->device, "FIFO under-run\n"); + return -ENXIO; + + case M_CMD_STATUS_RX_FIFO_FULL: + dev_dbg(iproc_i2c->device, "RX FIFO full\n"); + return -ETIMEDOUT; + default: dev_dbg(iproc_i2c->device, "unknown error code=%d\n", val); -- 2.17.1
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