ARM: davinci: enable SRAM ping ping buffering on DA850

Passes the DA850 shared SRAM gen_pool to the McASP driver
and enables the ping-pong buffer DMA support.

Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 32ee3f8..d9bc3fa 100644 (file)
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -762,16 +762,19 @@ static u8 da850_iis_serializer_direction[] = {
 };
 
 static struct snd_platform_data da850_evm_snd_data = {
-       .tx_dma_offset  = 0x2000,
-       .rx_dma_offset  = 0x2000,
-       .op_mode        = DAVINCI_MCASP_IIS_MODE,
-       .num_serializer = ARRAY_SIZE(da850_iis_serializer_direction),
-       .tdm_slots      = 2,
-       .serial_dir     = da850_iis_serializer_direction,
-       .asp_chan_q     = EVENTQ_0,
-       .version        = MCASP_VERSION_2,
-       .txnumevt       = 1,
-       .rxnumevt       = 1,
+       .tx_dma_offset          = 0x2000,
+       .rx_dma_offset          = 0x2000,
+       .op_mode                = DAVINCI_MCASP_IIS_MODE,
+       .num_serializer         = ARRAY_SIZE(da850_iis_serializer_direction),
+       .tdm_slots              = 2,
+       .serial_dir             = da850_iis_serializer_direction,
+       .asp_chan_q             = EVENTQ_0,
+       .ram_chan_q             = EVENTQ_1,
+       .version                = MCASP_VERSION_2,
+       .txnumevt               = 1,
+       .rxnumevt               = 1,
+       .sram_size_playback     = SZ_8K,
+       .sram_size_capture      = SZ_8K,
 };
 
 static const short da850_evm_mcasp_pins[] __initconst = {
@@ -1509,6 +1512,7 @@ static __init void da850_evm_init(void)
                pr_warning("da850_evm_init: mcasp mux setup failed: %d\n",
                                ret);
 
+       da850_evm_snd_data.sram_pool = sram_get_gen_pool();
        da8xx_register_mcasp(0, &da850_evm_snd_data);
 
        ret = davinci_cfg_reg_list(da850_lcdcntl_pins);