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authorMichael Cheng <ccheng@broadcom.com>2019-04-02 18:18:24 -0700
committerWolfram Sang <wsa@the-dreams.de>2019-04-03 22:35:38 +0200
commit1b23fa2e18f0fb485583733a53941c7103fc3b90 (patch)
tree954178cd72c8a5dca5beee8fd618e5d277e47832 /drivers/i2c
parentf34b8d9093d7b82b0dbe47825ef15565c5be7aff (diff)
i2c: iproc: Add support for more master error status
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> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-bcm-iproc.c10
1 files changed, 10 insertions, 0 deletions
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);