The combining of SDHCI_TRANSFER_MODE and SDHCI_COMMAND writes is only
required for esdhc, but not necessarily for usdhc. Different from
esdhc where the bits for transfer mode and command are all in the same
register CMD_XFR_TYP, usdhc has a newly introduced register MIX_CTRL
to hold transfer mode bits. So it makes more sense to separate transfer
mode from command write for usdhc.
Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx>
---
drivers/mmc/host/sdhci-esdhc-imx.c | 25 ++++++++++++++-----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 370c052..48832c5 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -239,10 +239,6 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
switch (reg) {
case SDHCI_TRANSFER_MODE:
- /*
- * Postpone this write, we must do it together with a
- * command write that is down below.
- */
if ((imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)
&& (host->cmd->opcode == SD_IO_RW_EXTENDED)
&& (host->cmd->data->blocks > 1)
@@ -252,7 +248,18 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
v |= ESDHC_VENDOR_SPEC_SDIO_QUIRK;
writel(v, host->ioaddr + ESDHC_VENDOR_SPEC);
}
- imx_data->scratchpad = val;
+
+ if (is_imx6q_usdhc(imx_data)) {
+ u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL);
+ m = val | (m & 0xffff0000);
+ writel(m, host->ioaddr + ESDHC_MIX_CTRL);
+ } else {
+ /*
+ * Postpone this write, we must do it together with a
+ * command write that is down below.
+ */
+ imx_data->scratchpad = val;
+ }
return;
case SDHCI_COMMAND:
if ((host->cmd->opcode == MMC_STOP_TRANSMISSION ||
@@ -260,16 +267,12 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
(imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT))
val |= SDHCI_CMD_ABORTCMD;
- if (is_imx6q_usdhc(imx_data)) {
- u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL);
- m = imx_data->scratchpad | (m & 0xffff0000);
- writel(m, host->ioaddr + ESDHC_MIX_CTRL);
+ if (is_imx6q_usdhc(imx_data))
writel(val << 16,
host->ioaddr + SDHCI_TRANSFER_MODE);
- } else {
+ else
writel(val << 16 | imx_data->scratchpad,
host->ioaddr + SDHCI_TRANSFER_MODE);
- }
return;
case SDHCI_BLOCK_SIZE:
val &= ~SDHCI_MAKE_BLKSZ(0x7, 0);
--
1.7.9.5
--
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