mmc-omap: Clean up omap set_ios and make MMC_POWER_ON work

Move divisor calculation into a separate function and re-arrange the
init order to make MMC_POWER_ON work.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index fc044a5..1914e65 100644 (file)
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -936,33 +936,41 @@ static void mmc_omap_power(struct mmc_omap_host *host, int on)
        }
 }
 
-static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios)
 {
        struct mmc_omap_host *host = mmc_priv(mmc);
+       int func_clk_rate = clk_get_rate(host->fclk);
        int dsor;
-       int realclock, i;
-
-       realclock = ios->clock;
 
        if (ios->clock == 0)
-               dsor = 0;
-       else {
-               int func_clk_rate = clk_get_rate(host->fclk);
-
-               dsor = func_clk_rate / realclock;
-               if (dsor < 1)
-                       dsor = 1;
+               return 0;
 
-               if (func_clk_rate / dsor > realclock)
-                       dsor++;
+       dsor = func_clk_rate / ios->clock;
+       if (dsor < 1)
+               dsor = 1;
 
-               if (dsor > 250)
-                       dsor = 250;
+       if (func_clk_rate / dsor > ios->clock)
                dsor++;
 
-               if (ios->bus_width == MMC_BUS_WIDTH_4)
-                       dsor |= 1 << 15;
-       }
+       if (dsor > 250)
+               dsor = 250;
+       dsor++;
+
+       if (ios->bus_width == MMC_BUS_WIDTH_4)
+               dsor |= 1 << 15;
+
+       return dsor;
+}
+
+static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+       struct mmc_omap_host *host = mmc_priv(mmc);
+       int dsor;
+       int i;
+
+       dsor = mmc_omap_calc_divisor(mmc, ios);
+       host->bus_mode = ios->bus_mode;
+       host->hw_bus_mode = host->bus_mode;
 
        switch (ios->power_mode) {
        case MMC_POWER_OFF:
@@ -977,9 +985,6 @@ static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
                break;
        }
 
-       host->bus_mode = ios->bus_mode;
-       host->hw_bus_mode = host->bus_mode;
-
        clk_enable(host->fclk);
 
        /* On insanely high arm_per frequencies something sometimes