1 files changed, 50 insertions, 1 deletions

diff --git a/arch/arm/mach-davinci/include/mach/asp.h b/arch/arm/mach-davinci/include/mach/asp.h
index 834725f1e81d..9aa240909a2c 100644
--- a/arch/arm/mach-davinci/include/mach/asp.h
+++ b/arch/arm/mach-davinci/include/mach/asp.h
@@ -52,7 +52,8 @@
 struct snd_platform_data {
         u32 tx_dma_offset;
         u32 rx_dma_offset;
-        enum dma_event_q eventq_no;     /* event queue number */
+        enum dma_event_q asp_chan_q;    /* event queue number for ASP channel */
+        enum dma_event_q ram_chan_q;    /* event queue number for RAM channel */
         unsigned int codec_fmt;
         /*
          * Allowing this is more efficient and eliminates left and right swaps
@@ -63,6 +64,49 @@ struct snd_platform_data {
         unsigned sram_size_playback;
         unsigned sram_size_capture;
 
+        /*
+         * If McBSP peripheral gets the clock from an external pin,
+         * there are three chooses, that are MCBSP_CLKX, MCBSP_CLKR
+         * and MCBSP_CLKS.
+         * Depending on different hardware connections it is possible
+         * to use this setting to change the behaviour of McBSP
+         * driver. The dm365_clk_input_pin enum is available for dm365
+         */
+        int clk_input_pin;
+
+        /*
+         * This flag works when both clock and FS are outputs for the cpu
+         * and makes clock more accurate (FS is not symmetrical and the
+         * clock is very fast.
+         * The clock becoming faster is named
+         * i2s continuous serial clock (I2S_SCK) and it is an externally
+         * visible bit clock.
+         *
+         * first line : WordSelect
+         * second line : ContinuousSerialClock
+         * third line: SerialData
+         *
+         * SYMMETRICAL APPROACH:
+         *   _______________________          LEFT
+         * _|         RIGHT         |______________________|
+         *     _   _         _   _   _   _         _   _
+         *   _| |_| |_ x16 _| |_| |_| |_| |_ x16 _| |_| |_
+         *     _   _         _   _   _   _         _   _
+         *   _/ \_/ \_ ... _/ \_/ \_/ \_/ \_ ... _/ \_/ \_
+         *    \_/ \_/       \_/ \_/ \_/ \_/       \_/ \_/
+         *
+         * ACCURATE CLOCK APPROACH:
+         *   ______________          LEFT
+         * _|     RIGHT    |_______________________________|
+         *     _         _   _         _   _   _   _   _   _
+         *   _| |_ x16 _| |_| |_ x16 _| |_| |_| |_| |_| |_| |
+         *     _         _   _          _      dummy cycles
+         *   _/ \_ ... _/ \_/ \_  ... _/ \__________________
+         *    \_/       \_/ \_/        \_/
+         *
+         */
+        bool i2s_accurate_sck;
+
         /* McASP specific fields */
         int tdm_slots;
         u8 op_mode;
@@ -78,6 +122,11 @@ enum {
         MCASP_VERSION_2,        /* DA8xx/OMAPL1x */
 };
 
+enum dm365_clk_input_pin {
+        MCBSP_CLKR = 0,         /* DM365 */
+        MCBSP_CLKS,
+};
+
 #define INACTIVE_MODE   0
 #define TX_MODE         1
 #define RX_MODE         2