This adds a method to set the MCBSP DMA OP mode.
Signed-off-by: Liam Girdwood <lrg@xxxxxxxxxxxxxxx>
---
arch/arm/plat-omap/include/plat/mcbsp.h | 2 ++
arch/arm/plat-omap/mcbsp.c | 31 +++++++++++++++++++++++++++++++
2 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h
index 1bd7021..f8823f4 100644
--- a/arch/arm/plat-omap/include/plat/mcbsp.h
+++ b/arch/arm/plat-omap/include/plat/mcbsp.h
@@ -476,6 +476,7 @@ u16 omap_mcbsp_get_max_rx_threshold(unsigned int id);
u16 omap_mcbsp_get_tx_delay(unsigned int id);
u16 omap_mcbsp_get_rx_delay(unsigned int id);
int omap_mcbsp_get_dma_op_mode(unsigned int id);
+int omap_mcbsp_set_dma_op_mode(unsigned int id, unsigned int mode);
#else
static inline void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold)
{ }
@@ -486,6 +487,7 @@ static inline u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) { return 0; }
static inline u16 omap_mcbsp_get_tx_delay(unsigned int id) { return 0; }
static inline u16 omap_mcbsp_get_rx_delay(unsigned int id) { return 0; }
static inline int omap_mcbsp_get_dma_op_mode(unsigned int id) { return 0; }
+static inline int omap_mcbsp_set_dma_op_mode(unsigned int id, unsigned int mode) {return 0;}
#endif
int omap_mcbsp_request(unsigned int id);
void omap_mcbsp_free(unsigned int id);
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 4820cab..cc2b73c 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -635,6 +635,37 @@ int omap_mcbsp_get_dma_op_mode(unsigned int id)
}
EXPORT_SYMBOL(omap_mcbsp_get_dma_op_mode);
+/*
+ * omap_mcbsp_set_dma_op_mode set the current DMA
+ * operating mode for the mcbsp channel
+ */
+int omap_mcbsp_set_dma_op_mode(unsigned int id, unsigned int mode)
+{
+ struct omap_mcbsp *mcbsp;
+ int ret = 0;
+
+ if (mode > MCBSP_DMA_MODE_FRAME)
+ return -EINVAL;
+
+ if (!omap_mcbsp_check_valid_id(id)) {
+ printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
+ return -ENODEV;
+ }
+ mcbsp = id_to_mcbsp_ptr(id);
+
+ spin_lock_irq(&mcbsp->lock);
+ if (!mcbsp->free) {
+ ret = -EBUSY;
+ goto unlock;
+ }
+ mcbsp->dma_op_mode = mode;
+
+unlock:
+ spin_unlock_irq(&mcbsp->lock);
+ return ret;
+}
+EXPORT_SYMBOL(omap_mcbsp_set_dma_op_mode);
+
static inline void omap34xx_mcbsp_request(struct omap_mcbsp *mcbsp)
{
/*
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
