Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

[pandora-kernel.git] / arch / arm / mach-omap2 / mcbsp.c

diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index 88b8790..f9c9df5 100644 (file)
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -23,6 +23,86 @@
 #include <plat/cpu.h>
 #include <plat/mcbsp.h>
 
+#include "control.h"
+
+
+/* McBSP internal signal muxing functions */
+
+void omap2_mcbsp1_mux_clkr_src(u8 mux)
+{
+       u32 v;
+
+       v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+       if (mux == CLKR_SRC_CLKR)
+               v &= ~OMAP2_MCBSP1_CLKR_MASK;
+       else if (mux == CLKR_SRC_CLKX)
+               v |= OMAP2_MCBSP1_CLKR_MASK;
+       omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
+}
+EXPORT_SYMBOL(omap2_mcbsp1_mux_clkr_src);
+
+void omap2_mcbsp1_mux_fsr_src(u8 mux)
+{
+       u32 v;
+
+       v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
+       if (mux == FSR_SRC_FSR)
+               v &= ~OMAP2_MCBSP1_FSR_MASK;
+       else if (mux == FSR_SRC_FSX)
+               v |= OMAP2_MCBSP1_FSR_MASK;
+       omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
+}
+EXPORT_SYMBOL(omap2_mcbsp1_mux_fsr_src);
+
+/* McBSP CLKS source switching function */
+
+int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id)
+{
+       struct omap_mcbsp *mcbsp;
+       struct clk *fck_src;
+       char *fck_src_name;
+       int r;
+
+       if (!omap_mcbsp_check_valid_id(id)) {
+               pr_err("%s: Invalid id (%d)\n", __func__, id + 1);
+               return -EINVAL;
+       }
+       mcbsp = id_to_mcbsp_ptr(id);
+
+       if (fck_src_id == MCBSP_CLKS_PAD_SRC)
+               fck_src_name = "pad_fck";
+       else if (fck_src_id == MCBSP_CLKS_PRCM_SRC)
+               fck_src_name = "prcm_fck";
+       else
+               return -EINVAL;
+
+       fck_src = clk_get(mcbsp->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;
+       }
+
+       clk_disable(mcbsp->fclk);
+
+       r = clk_set_parent(mcbsp->fclk, 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;
+       }
+
+       clk_enable(mcbsp->fclk);
+
+       clk_put(fck_src);
+
+       return 0;
+}
+EXPORT_SYMBOL(omap2_mcbsp_set_clks_src);
+
+
+/* Platform data */
 
 #ifdef CONFIG_ARCH_OMAP2420
 static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {