diff options
Diffstat (limited to 'drivers/spi/spi-hisi-sfc-v3xx.c')
| -rw-r--r-- | drivers/spi/spi-hisi-sfc-v3xx.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/spi/spi-hisi-sfc-v3xx.c b/drivers/spi/spi-hisi-sfc-v3xx.c index e3b57252d075..64a18d08a4d9 100644 --- a/drivers/spi/spi-hisi-sfc-v3xx.c +++ b/drivers/spi/spi-hisi-sfc-v3xx.c @@ -17,6 +17,11 @@ #define HISI_SFC_V3XX_VERSION (0x1f8) +#define HISI_SFC_V3XX_INT_STAT (0x120) +#define HISI_SFC_V3XX_INT_STAT_PP_ERR BIT(2) +#define HISI_SFC_V3XX_INT_STAT_ADDR_IACCES BIT(5) +#define HISI_SFC_V3XX_INT_CLR (0x12c) +#define HISI_SFC_V3XX_INT_CLR_CLEAR (0xff) #define HISI_SFC_V3XX_CMD_CFG (0x300) #define HISI_SFC_V3XX_CMD_CFG_DUAL_IN_DUAL_OUT (1 << 17) #define HISI_SFC_V3XX_CMD_CFG_DUAL_IO (2 << 17) @@ -163,7 +168,7 @@ static int hisi_sfc_v3xx_generic_exec_op(struct hisi_sfc_v3xx_host *host, u8 chip_select) { int ret, len = op->data.nbytes; - u32 config = 0; + u32 int_stat, config = 0; if (op->addr.nbytes) config |= HISI_SFC_V3XX_CMD_CFG_ADDR_EN_MSK; @@ -228,6 +233,25 @@ static int hisi_sfc_v3xx_generic_exec_op(struct hisi_sfc_v3xx_host *host, if (ret) return ret; + /* + * The interrupt status register indicates whether an error occurs + * after per operation. Check it, and clear the interrupts for + * next time judgement. + */ + int_stat = readl(host->regbase + HISI_SFC_V3XX_INT_STAT); + writel(HISI_SFC_V3XX_INT_CLR_CLEAR, + host->regbase + HISI_SFC_V3XX_INT_CLR); + + if (int_stat & HISI_SFC_V3XX_INT_STAT_ADDR_IACCES) { + dev_err(host->dev, "fail to access protected address\n"); + return -EIO; + } + + if (int_stat & HISI_SFC_V3XX_INT_STAT_PP_ERR) { + dev_err(host->dev, "page program operation failed\n"); + return -EIO; + } + if (op->data.dir == SPI_MEM_DATA_IN) hisi_sfc_v3xx_read_databuf(host, op->data.buf.in, len); |