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| author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2009-08-20 16:18:14 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-08-20 20:10:27 +0100 |
| commit | 98cb20e88957faf9c99e194242caac7f55dd47e4 (patch) | |
| tree | e87f54f9cf9cba27a88711d336d4f4b6bdb3b396 /arch/arm/plat-omap/include/mach/mcbsp.h | |
| parent | 4c8200aeb04b8aeaf8c7425f49caf761e2cda95a (diff) | |
| download | linux-98cb20e88957faf9c99e194242caac7f55dd47e4.tar.bz2 | |
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/mach/mcbsp.h')
| -rw-r--r-- | arch/arm/plat-omap/include/mach/mcbsp.h | 8 |
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 832330d7cb39..bd5b759991c8 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); |