McBSP2/3 module's sidetone module operates using the module's ICLK clock.
When the Sidetone is in use the interface clock of the module must not
idle. The new callback expects to receive the *clk of the module's ick and
not the id number of the McBSP. This will allow us more cleanups and going
to simplify the ICLK handling.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
arch/arm/mach-omap2/mcbsp.c | 12 ++++++++++++
include/linux/platform_data/asoc-ti-mcbsp.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index b4ac3af1160c..959cb4cb1062 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -48,6 +48,17 @@ static int omap3_enable_st_clock(unsigned int id, bool enable)
return omap2_clk_allow_idle(mcbsp_iclks[id]);
}
+static int omap3_mcbsp_force_ick_on(struct clk *clk, bool force_on)
+{
+ if (!clk)
+ return 0;
+
+ if (force_on)
+ return omap2_clk_deny_idle(clk);
+ else
+ return omap2_clk_allow_idle(clk);
+}
+
static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
{
int id, count = 1;
@@ -97,6 +108,7 @@ static int __init omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
oh_device[1] = omap_hwmod_lookup((
(struct omap_mcbsp_dev_attr *)(oh->dev_attr))->sidetone);
pdata->enable_st_clock = omap3_enable_st_clock;
+ pdata->force_ick_on = omap3_mcbsp_force_ick_on;
sprintf(clk_name, "mcbsp%d_ick", id);
mcbsp_iclks[id] = clk_get(NULL, clk_name);
count++;
diff --git a/include/linux/platform_data/asoc-ti-mcbsp.h b/include/linux/platform_data/asoc-ti-mcbsp.h
index 3c73c045f8da..73e5e832fa23 100644
--- a/include/linux/platform_data/asoc-ti-mcbsp.h
+++ b/include/linux/platform_data/asoc-ti-mcbsp.h
@@ -45,6 +45,7 @@ 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 (*force_ick_on)(struct clk *clk, bool force_on);
};
/**
--
2.8.1
--
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