aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/plat-omap/include
diff options
context:
space:
mode:
authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2009-08-20 16:18:14 +0300
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-20 20:10:27 +0100
commit98cb20e88957faf9c99e194242caac7f55dd47e4 (patch)
treee87f54f9cf9cba27a88711d336d4f4b6bdb3b396 /arch/arm/plat-omap/include
parent4c8200aeb04b8aeaf8c7425f49caf761e2cda95a (diff)
OMAP: McBSP: Add link DMA mode selection
It adds a new sysfs file, where the user can configure the mcbsp mode to use. If the mcbsp channel is in use, it does not allow the change. Than in omap_pcm_open we can call the omap_mcbsp_get_opmode to get the mode, store it, than use it to implement the different modes. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by: Eduardo Valentin <eduardo.valentin@nokia.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'arch/arm/plat-omap/include')
-rw-r--r--arch/arm/plat-omap/include/mach/mcbsp.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/mcbsp.h b/arch/arm/plat-omap/include/mach/mcbsp.h
index 832330d7cb3..bd5b759991c 100644
--- a/arch/arm/plat-omap/include/mach/mcbsp.h
+++ b/arch/arm/plat-omap/include/mach/mcbsp.h
@@ -255,6 +255,11 @@
/********************** McBSP SYSCONFIG bit definitions ********************/
#define SOFTRST 0x0002
+/********************** McBSP DMA operating modes **************************/
+#define MCBSP_DMA_MODE_ELEMENT 0
+#define MCBSP_DMA_MODE_THRESHOLD 1
+#define MCBSP_DMA_MODE_FRAME 2
+
/* we don't do multichannel for now */
struct omap_mcbsp_reg_cfg {
u16 spcr2;
@@ -385,6 +390,7 @@ struct omap_mcbsp {
struct clk *iclk;
struct clk *fclk;
#ifdef CONFIG_ARCH_OMAP34XX
+ int dma_op_mode;
u16 max_tx_thres;
u16 max_rx_thres;
#endif
@@ -401,6 +407,7 @@ void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold);
void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold);
u16 omap_mcbsp_get_max_tx_threshold(unsigned int id);
u16 omap_mcbsp_get_max_rx_threshold(unsigned int id);
+int omap_mcbsp_get_dma_op_mode(unsigned int id);
#else
static inline void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold)
{ }
@@ -408,6 +415,7 @@ static inline void omap_mcbsp_set_rx_threshold(unsigned int id, u16 threshold)
{ }
static inline u16 omap_mcbsp_get_max_tx_threshold(unsigned int id) { return 0; }
static inline u16 omap_mcbsp_get_max_rx_threshold(unsigned int id) { return 0; }
+static inline int omap_mcbsp_get_dma_op_mode(unsigned int id) { return 0; }
#endif
int omap_mcbsp_request(unsigned int id);
void omap_mcbsp_free(unsigned int id);