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-rw-r--r--arch/arm/mach-omap2/mcbsp.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index 4c9c999dfa4a..51abcedfde83 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -52,6 +52,54 @@ void omap2_mcbsp1_mux_fsr_src(u8 mux)
}
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
@@ -190,18 +238,21 @@ static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = {
.dma_rx_sync = OMAP44XX_DMA_MCBSP2_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP2_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP2,
+ /* XXX .ops ? */
},
{
.phys_base = OMAP44XX_MCBSP3_BASE,
.dma_rx_sync = OMAP44XX_DMA_MCBSP3_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP3_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP3,
+ /* XXX .ops ? */
},
{
.phys_base = OMAP44XX_MCBSP4_BASE,
.dma_rx_sync = OMAP44XX_DMA_MCBSP4_RX,
.dma_tx_sync = OMAP44XX_DMA_MCBSP4_TX,
.tx_irq = OMAP44XX_IRQ_MCBSP4,
+ /* XXX .ops ? */
},
};
#define OMAP44XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap44xx_mcbsp_pdata)