mmc: sunxi: Move the card power configuration to a function

In order to improve readibility and reusability, let's move the card setup
to a small function called by our .set_ios hook.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 3c1ab46..0165da0 100644 (file)
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -888,17 +888,15 @@ static void sunxi_mmc_set_clk(struct sunxi_mmc_host *host, struct mmc_ios *ios)
        /* Android code had a usleep_range(50000, 55000); here */
 }
 
-static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+static void sunxi_mmc_card_power(struct sunxi_mmc_host *host,
+                                struct mmc_ios *ios)
 {
-       struct sunxi_mmc_host *host = mmc_priv(mmc);
-       u32 rval;
+       struct mmc_host *mmc = host->mmc;
 
-       /* Set the power state */
        switch (ios->power_mode) {
-       case MMC_POWER_ON:
-               break;
-
        case MMC_POWER_UP:
+               dev_dbg(mmc_dev(mmc), "Powering card up\n");
+
                if (!IS_ERR(mmc->supply.vmmc)) {
                        host->ferror = mmc_regulator_set_ocr(mmc,
                                                             mmc->supply.vmmc,
@@ -916,25 +914,37 @@ static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
                        }
                        host->vqmmc_enabled = true;
                }
-
-               host->ferror = sunxi_mmc_init_host(host);
-               if (host->ferror)
-                       return;
-
-               dev_dbg(mmc_dev(mmc), "power on!\n");
                break;
 
        case MMC_POWER_OFF:
-               dev_dbg(mmc_dev(mmc), "power off!\n");
-               sunxi_mmc_reset_host(host);
+               dev_dbg(mmc_dev(mmc), "Powering card off\n");
+
                if (!IS_ERR(mmc->supply.vmmc))
                        mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
 
                if (!IS_ERR(mmc->supply.vqmmc) && host->vqmmc_enabled)
                        regulator_disable(mmc->supply.vqmmc);
+
                host->vqmmc_enabled = false;
                break;
+
+       default:
+               dev_dbg(mmc_dev(mmc), "Ignoring unknown card power state\n");
+               break;
        }
+}
+
+static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+       struct sunxi_mmc_host *host = mmc_priv(mmc);
+
+       if (ios->power_mode == MMC_POWER_OFF)
+               sunxi_mmc_reset_host(host);
+
+       sunxi_mmc_card_power(host, ios);
+
+       if (ios->power_mode == MMC_POWER_UP)
+               sunxi_mmc_init_host(host);
 
        sunxi_mmc_set_bus_width(host, ios->bus_width);
        sunxi_mmc_set_clk(host, ios);