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Subject[PATCH v2 3/6] mmc: dw_mmc: split out dw_mci_set_power
Date
The dw_mci_set_ios is a little complicated and lengthy,
let's split out the setting of power part. No functionality
change.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
---

Changes in v2: None

drivers/mmc/host/dw_mmc.c | 87 ++++++++++++++++++++++++++---------------------
1 file changed, 49 insertions(+), 38 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 59a5e9c..0e5ed23 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1276,54 +1276,19 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
spin_unlock_bh(&host->lock);
}

-static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+static int dw_mci_set_power(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
- const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
u32 regs;

- switch (ios->bus_width) {
- case MMC_BUS_WIDTH_4:
- slot->ctype = SDMMC_CTYPE_4BIT;
- break;
- case MMC_BUS_WIDTH_8:
- slot->ctype = SDMMC_CTYPE_8BIT;
- break;
- default:
- /* set default 1 bit mode */
- slot->ctype = SDMMC_CTYPE_1BIT;
- }
-
- regs = mci_readl(slot->host, UHS_REG);
-
- /* DDR mode set */
- if (ios->timing == MMC_TIMING_MMC_DDR52 ||
- ios->timing == MMC_TIMING_UHS_DDR50 ||
- ios->timing == MMC_TIMING_MMC_HS400)
- regs |= ((0x1 << slot->id) << 16);
- else
- regs &= ~((0x1 << slot->id) << 16);
-
- mci_writel(slot->host, UHS_REG, regs);
- slot->host->timing = ios->timing;
-
- /*
- * Use mirror of ios->clock to prevent race with mmc
- * core ios update when finding the minimum.
- */
- slot->clock = ios->clock;
-
- if (drv_data && drv_data->set_ios)
- drv_data->set_ios(slot->host, ios);
-
switch (ios->power_mode) {
case MMC_POWER_UP:
if (!IS_ERR(mmc->supply.vmmc) &&
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd)) {
dev_err(slot->host->dev,
"failed to enable vmmc regulator\n");
- /*return, if failed turn on vmmc*/
- return;
+
+ return -EINVAL;
}
set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags);
regs = mci_readl(slot->host, PWREN);
@@ -1369,6 +1334,52 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
break;
}

+ return 0;
+}
+
+static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct dw_mci_slot *slot = mmc_priv(mmc);
+ const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
+ u32 regs;
+
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_4:
+ slot->ctype = SDMMC_CTYPE_4BIT;
+ break;
+ case MMC_BUS_WIDTH_8:
+ slot->ctype = SDMMC_CTYPE_8BIT;
+ break;
+ default:
+ /* set default 1 bit mode */
+ slot->ctype = SDMMC_CTYPE_1BIT;
+ }
+
+ regs = mci_readl(slot->host, UHS_REG);
+
+ /* DDR mode set */
+ if (ios->timing == MMC_TIMING_MMC_DDR52 ||
+ ios->timing == MMC_TIMING_UHS_DDR50 ||
+ ios->timing == MMC_TIMING_MMC_HS400)
+ regs |= ((0x1 << slot->id) << 16);
+ else
+ regs &= ~((0x1 << slot->id) << 16);
+
+ mci_writel(slot->host, UHS_REG, regs);
+ slot->host->timing = ios->timing;
+
+ /*
+ * Use mirror of ios->clock to prevent race with mmc
+ * core ios update when finding the minimum.
+ */
+ slot->clock = ios->clock;
+
+ if (drv_data && drv_data->set_ios)
+ drv_data->set_ios(slot->host, ios);
+
+ if (dw_mci_set_power(mmc, ios))
+ return;
+
if (slot->host->state == STATE_WAITING_CMD11_DONE && ios->clock != 0)
slot->host->state = STATE_IDLE;
}
--
2.3.7

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