ARM/ASoC: omap-mcbsp: Move OMAP2+ clock parenting code to ASoC driver

Move the McBSP CLKS re-parenting code to ASoC driver from
arch/arm/mach-omap2.
The call fort the re-parenting has been already limited to OMAP2+ SoC in
the ASoC driver. There is no longer need to have callback function for it.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 26 insertions, 46 deletions

diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index 577cb77db26c..ebc801ea5be9 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -101,45 +101,6 @@ static int omap4_mcbsp4_mux_rx_clk(struct device *dev, const char *signal,
         return 0;
 }
 
-/* McBSP CLKS source switching function */
-static int omap2_mcbsp_set_clk_src(struct device *dev, struct clk *clk,
-                                   const char *src)
-{
-        struct clk *fck_src;
-        char *fck_src_name;
-        int r;
-
-        if (!strcmp(src, "clks_ext"))
-                fck_src_name = "pad_fck";
-        else if (!strcmp(src, "clks_fclk"))
-                fck_src_name = "prcm_fck";
-        else
-                return -EINVAL;
-
-        fck_src = clk_get(dev, fck_src_name);
-        if (IS_ERR_OR_NULL(fck_src)) {
-                pr_err("omap-mcbsp: %s: could not clk_get() %s\n", "clks",
-                       fck_src_name);
-                return -EINVAL;
-        }
-
-        pm_runtime_put_sync(dev);
-
-        r = clk_set_parent(clk, fck_src);
-        if (IS_ERR_VALUE(r)) {
-                pr_err("omap-mcbsp: %s: could not clk_set_parent() to %s\n",
-                       "clks", fck_src_name);
-                clk_put(fck_src);
-                return -EINVAL;
-        }
-
-        pm_runtime_get_sync(dev);
-
-        clk_put(fck_src);
-
-        return 0;
-}
-
 static int omap3_enable_st_clock(unsigned int id, bool enable)
 {
         unsigned int w;
@@ -181,7 +142,6 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
                 pdata->reg_size = 4;
                 pdata->has_ccr = true;
         }
-        pdata->set_clk_src = omap2_mcbsp_set_clk_src;
 
         /* On OMAP2/3 the McBSP1 port has 6 pin configuration */
         if (id == 1 && oh->class->rev < MCBSP_CONFIG_TYPE4)
diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h
index 18814127809a..0a7d5ca471e0 100644
--- a/arch/arm/plat-omap/include/plat/mcbsp.h
+++ b/arch/arm/plat-omap/include/plat/mcbsp.h
@@ -47,7 +47,6 @@ struct omap_mcbsp_platform_data {
         bool has_wakeup; /* Wakeup capability */
         bool has_ccr; /* Transceiver has configuration control registers */
         int (*enable_st_clock)(unsigned int, bool);
-        int (*set_clk_src)(struct device *dev, struct clk *clk, const char *src);
         int (*mux_signal)(struct device *dev, const char *signal, const char *src);
 };
 
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index 34835e8a9160..6afbc26cef70 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/slab.h>
+#include <linux/pm_runtime.h>
 
 #include <plat/mcbsp.h>
 
@@ -726,19 +727,39 @@ void omap_mcbsp_stop(struct omap_mcbsp *mcbsp, int tx, int rx)
 
 int omap2_mcbsp_set_clks_src(struct omap_mcbsp *mcbsp, u8 fck_src_id)
 {
+        struct clk *fck_src;
         const char *src;
+        int r;
 
         if (fck_src_id == MCBSP_CLKS_PAD_SRC)
-                src = "clks_ext";
+                src = "pad_fck";
         else if (fck_src_id == MCBSP_CLKS_PRCM_SRC)
-                src = "clks_fclk";
+                src = "prcm_fck";
         else
                 return -EINVAL;
 
-        if (mcbsp->pdata->set_clk_src)
-                return mcbsp->pdata->set_clk_src(mcbsp->dev, mcbsp->fclk, src);
-        else
+        fck_src = clk_get(mcbsp->dev, src);
+        if (IS_ERR(fck_src)) {
+                dev_err(mcbsp->dev, "CLKS: could not clk_get() %s\n", src);
                 return -EINVAL;
+        }
+
+        pm_runtime_put_sync(mcbsp->dev);
+
+        r = clk_set_parent(mcbsp->fclk, fck_src);
+        if (r) {
+                dev_err(mcbsp->dev, "CLKS: could not clk_set_parent() to %s\n",
+                        src);
+                clk_put(fck_src);
+                return r;
+        }
+
+        pm_runtime_get_sync(mcbsp->dev);
+
+        clk_put(fck_src);
+
+        return 0;
+
 }
 
 int omap_mcbsp_6pin_src_mux(struct omap_mcbsp *mcbsp, u8 mux)