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mmc: meson-gx: rework set_ios function 

Remove conditional write of cfg register. Warn if set_clk fails for some
reason. Consistently use host->dev instead of mixing with mmc_dev(mmc)

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Jerome Brunet 2017-08-28 16:29:05 +02:00 committed by Ulf Hansson
parent 3c39e2ca88
commit c36cf1257b
1 changed files with 9 additions and 13 deletions
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22
drivers/mmc/host/meson-gx-mmc.c
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@ -444,8 +444,8 @@ static void meson_mmc_set_tuning_params(struct mmc_host *mmc)
static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct meson_host *host = mmc_priv(mmc);
u32 bus_width;
u32 val, orig;
u32 bus_width, val;
int err;
/*
* GPIO regulator, only controls switching between 1v8 and
@ -473,7 +473,7 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
int ret = regulator_enable(mmc->supply.vqmmc);
if (ret < 0)
dev_err(mmc_dev(mmc),
dev_err(host->dev,
"failed to enable vqmmc regulator\n");
else
host->vqmmc_enabled = true;
@ -482,9 +482,6 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
break;
}
meson_mmc_clk_set(host, ios->clock);
/* Bus width */
switch (ios->bus_width) {
case MMC_BUS_WIDTH_1:
@ -503,8 +500,6 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
val = readl(host->regs + SD_EMMC_CFG);
orig = val;
val &= ~CFG_BUS_WIDTH_MASK;
val |= FIELD_PREP(CFG_BUS_WIDTH_MASK, bus_width);
@ -518,11 +513,12 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (ios->timing == MMC_TIMING_MMC_HS400)
val |= CFG_CHK_DS;
if (val != orig) {
writel(val, host->regs + SD_EMMC_CFG);
dev_dbg(host->dev, "%s: SD_EMMC_CFG: 0x%08x -> 0x%08x\n",
__func__, orig, val);
}
err = meson_mmc_clk_set(host, ios->clock);
if (err)
dev_err(host->dev, "Failed to set clock: %d\n,", err);
writel(val, host->regs + SD_EMMC_CFG);
dev_dbg(host->dev, "SD_EMMC_CFG: 0x%08x\n", val);
}
static void meson_mmc_request_done(struct mmc_host *mmc,