diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2012-02-14 15:41:29 +0200 |
|---|---|---|
| committer | Liam Girdwood <lrg@ti.com> | 2012-03-12 13:34:22 +0000 |
| commit | b8fb4907a74dbcbd0b21e02380d58e422bd4a1fe (patch) | |
| tree | 0b3369b83f25835af04414bd2c992e65d3783092 /sound/soc/omap/mcbsp.c | |
| parent | 256d9c251fe6800a494206b96d2572e5a98762d5 (diff) | |
| download | linux-b8fb4907a74dbcbd0b21e02380d58e422bd4a1fe.tar.bz2 | |
ASoC: omap-mcbsp: Simplify DMA configuration
Configure the DMA request line, port address, and stream name at
probe time instead of every time we start a stream.
These settings are static in the system.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound/soc/omap/mcbsp.c')
| -rw-r--r-- | sound/soc/omap/mcbsp.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c index 9e39c58a4671..fe4734e0c18c 100644 --- a/sound/soc/omap/mcbsp.c +++ b/sound/soc/omap/mcbsp.c @@ -176,22 +176,6 @@ void omap_mcbsp_config(struct omap_mcbsp *mcbsp, } /** - * omap_mcbsp_dma_params - returns the dma channel number - * @id - mcbsp id - * @stream - indicates the direction of data flow (rx or tx) - * - * Returns the dma channel number for the rx channel or tx channel - * based on the value of @stream for the requested mcbsp given by @id - */ -int omap_mcbsp_dma_ch_params(struct omap_mcbsp *mcbsp, unsigned int stream) -{ - if (stream) - return mcbsp->dma_rx_sync; - else - return mcbsp->dma_tx_sync; -} - -/** * omap_mcbsp_dma_reg_params - returns the address of mcbsp data register * @id - mcbsp id * @stream - indicates the direction of data flow (rx or tx) @@ -200,7 +184,8 @@ int omap_mcbsp_dma_ch_params(struct omap_mcbsp *mcbsp, unsigned int stream) * to be used by DMA for transferring/receiving data based on the value of * @stream for the requested mcbsp given by @id */ -int omap_mcbsp_dma_reg_params(struct omap_mcbsp *mcbsp, unsigned int stream) +static int omap_mcbsp_dma_reg_params(struct omap_mcbsp *mcbsp, + unsigned int stream) { int data_reg; @@ -983,14 +968,20 @@ int __devinit omap_mcbsp_init(struct platform_device *pdev) dev_err(&pdev->dev, "invalid rx DMA channel\n"); return -ENODEV; } - mcbsp->dma_rx_sync = res->start; + /* RX DMA request number, and port address configuration */ + mcbsp->dma_data[1].name = "Audio Capture"; + mcbsp->dma_data[1].dma_req = res->start; + mcbsp->dma_data[1].port_addr = omap_mcbsp_dma_reg_params(mcbsp, 1); res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); if (!res) { dev_err(&pdev->dev, "invalid tx DMA channel\n"); return -ENODEV; } - mcbsp->dma_tx_sync = res->start; + /* TX DMA request number, and port address configuration */ + mcbsp->dma_data[0].name = "Audio Playback"; + mcbsp->dma_data[0].dma_req = res->start; + mcbsp->dma_data[0].port_addr = omap_mcbsp_dma_reg_params(mcbsp, 0); mcbsp->fclk = clk_get(&pdev->dev, "fck"); if (IS_ERR(mcbsp->fclk)) { |