From 48519f0ae03bc7e86b3dc93e56f1334d53803770 Mon Sep 17 00:00:00 2001 From: Sekhar Nori Date: Mon, 19 Jul 2010 12:31:16 +0530 Subject: ASoC: davinci: let platform data define edma queue numbers Currently the EDMA queue to be used by for servicing ASP through internal RAM is fixed to EDMAQ_0 and that to service internal RAM from external RAM is fixed to EDMAQ_1. This may not be the desirable configuration on all platforms. For example, on DM365, queue 0 has large fifo size and is more suitable for video transfers. Having audio and video transfers on the same queue may lead to starvation on audio side. platform data as defined currently passes a queue number to the driver but that remains unused inside the driver. Fix this by defining one queue each for ASP and RAM transfers in the platform data and using it inside the driver. Since EDMAQ_0 maps to 0, thats the queue that will be used if the asp queue number is not initialized. None of the platforms currently utilize ping-pong transfers through internal RAM so that functionality remains unchanged too. This patch has been tested on DM644x and OMAP-L138 EVMs. Signed-off-by: Sekhar Nori Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- arch/arm/mach-davinci/board-da830-evm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/mach-davinci/board-da830-evm.c') diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index 212d97084bd7..bc384d3561da 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -208,7 +208,7 @@ static struct snd_platform_data da830_evm_snd_data = { .num_serializer = ARRAY_SIZE(da830_iis_serializer_direction), .tdm_slots = 2, .serial_dir = da830_iis_serializer_direction, - .eventq_no = EVENTQ_0, + .asp_chan_q = EVENTQ_0, .version = MCASP_VERSION_2, .txnumevt = 1, .rxnumevt = 1, -- cgit v1.2.3 From a941c50340c97f1f9c5e4d0de7d1bfdbffbdef24 Mon Sep 17 00:00:00 2001 From: "Rajashekhara, Sudhakar" Date: Tue, 29 Jun 2010 11:35:14 +0530 Subject: davinci: da8xx/omapl EVM: Specify reserved channels/slots The drivers on da8xx/omapl EVMs do not utilize all the channels and slots provided by EDMA. Some of these are better utilitzed by the DSP on the SoC for speeding up codec operations. Reserve these channels/slots for the DSP. Signed-off-by: Sudhakar Rajashekhara Signed-off-by: Sekhar Nori Signed-off-by: Kevin Hilman --- arch/arm/mach-davinci/board-da830-evm.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-davinci/board-da830-evm.c') diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c index 212d97084bd7..b61e87250b3b 100644 --- a/arch/arm/mach-davinci/board-da830-evm.c +++ b/arch/arm/mach-davinci/board-da830-evm.c @@ -494,12 +494,42 @@ static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = { .bus_delay = 0, /* usec */ }; +/* + * The following EDMA channels/slots are not being used by drivers (for + * example: Timer, GPIO, UART events etc) on da830/omap-l137 EVM, hence + * they are being reserved for codecs on the DSP side. + */ +static const s16 da830_dma_rsv_chans[][2] = { + /* (offset, number) */ + { 8, 2}, + {12, 2}, + {24, 4}, + {30, 2}, + {-1, -1} +}; + +static const s16 da830_dma_rsv_slots[][2] = { + /* (offset, number) */ + { 8, 2}, + {12, 2}, + {24, 4}, + {30, 26}, + {-1, -1} +}; + +static struct edma_rsv_info da830_edma_rsv[] = { + { + .rsv_chans = da830_dma_rsv_chans, + .rsv_slots = da830_dma_rsv_slots, + }, +}; + static __init void da830_evm_init(void) { struct davinci_soc_info *soc_info = &davinci_soc_info; int ret; - ret = da8xx_register_edma(); + ret = da830_register_edma(da830_edma_rsv); if (ret) pr_warning("da830_evm_init: edma registration failed: %d\n", ret); -- cgit v1.2.3