Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-18 18:11:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

spi: HiSilicon v3xx: Properly set CMD_CONFIG for Dual/Quad modes

Browse Source 
The CMD_CONFIG register memory interface type field is not set configured
for Dual and Quad modes, so set appropriately.

This was not detected previously as we only ever operated in standard SPI
mode.

Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1582903131-160033-3-git-send-email-john.garry@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
John Garry 2020-02-28 23:18:50 +08:00 committed by Mark Brown
parent ea23578611
commit 8fe21d6b34
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 43 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/spi/spi-hisi-sfc-v3xx.c
View File

@ -17,6 +17,12 @@
#define HISI_SFC_V3XX_VERSION (0x1f8)
#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)
#define HISI_SFC_V3XX_CMD_CFG_FULL_DIO (3 << 17)
#define HISI_SFC_V3XX_CMD_CFG_QUAD_IN_QUAD_OUT (5 << 17)
#define HISI_SFC_V3XX_CMD_CFG_QUAD_IO (6 << 17)
#define HISI_SFC_V3XX_CMD_CFG_FULL_QIO (7 << 17)
#define HISI_SFC_V3XX_CMD_CFG_DATA_CNT_OFF 9
#define HISI_SFC_V3XX_CMD_CFG_RW_MSK BIT(8)
#define HISI_SFC_V3XX_CMD_CFG_DATA_EN_MSK BIT(7)
@ -161,6 +167,43 @@ static int hisi_sfc_v3xx_generic_exec_op(struct hisi_sfc_v3xx_host *host,
if (op->addr.nbytes)
config |= HISI_SFC_V3XX_CMD_CFG_ADDR_EN_MSK;
switch (op->data.buswidth) {
case 0 ... 1:
break;
case 2:
if (op->addr.buswidth <= 1) {
config |= HISI_SFC_V3XX_CMD_CFG_DUAL_IN_DUAL_OUT;
} else if (op->addr.buswidth == 2) {
if (op->cmd.buswidth <= 1) {
config |= HISI_SFC_V3XX_CMD_CFG_DUAL_IO;
} else if (op->cmd.buswidth == 2) {
config |= HISI_SFC_V3XX_CMD_CFG_FULL_DIO;
} else {
return -EIO;
}
} else {
return -EIO;
}
break;
case 4:
if (op->addr.buswidth <= 1) {
config |= HISI_SFC_V3XX_CMD_CFG_QUAD_IN_QUAD_OUT;
} else if (op->addr.buswidth == 4) {
if (op->cmd.buswidth <= 1) {
config |= HISI_SFC_V3XX_CMD_CFG_QUAD_IO;
} else if (op->cmd.buswidth == 4) {
config |= HISI_SFC_V3XX_CMD_CFG_FULL_QIO;
} else {
return -EIO;
}
} else {
return -EIO;
}
break;
default:
return -EOPNOTSUPP;
}
if (op->data.dir != SPI_MEM_NO_DATA) {
config |= (len - 1) << HISI_SFC_V3XX_CMD_CFG_DATA_CNT_OFF;
config |= HISI_SFC_V3XX_CMD_CFG_DATA_EN_MSK;