i2c: iproc: Add support for more master error status (1b23fa2e) · Commits · 戴 / test

Add support for more master error status including FIFO underrun and RX FIFO full Signed-off-by:

drivers/i2c/busses/i2c-bcm-iproc.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -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);