diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2013-01-21 19:02:24 +0800 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-02-24 14:37:01 -0500 |
| commit | 69f5469822132c4ae0637eef2980dbaec5bb2b31 (patch) | |
| tree | b6bc7696a8fbb558d1ef65ea64397a99372bc4ab /drivers/mmc | |
| parent | 881d926d9d0bd2eb50f8f90c993bc403853382ce (diff) | |
| download | op-kernel-dev-69f5469822132c4ae0637eef2980dbaec5bb2b31.zip op-kernel-dev-69f5469822132c4ae0637eef2980dbaec5bb2b31.tar.gz | |
mmc: sdhci-esdhc-imx: separate transfer mode from command write for usdhc
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@linaro.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 25 |
1 files 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); |
