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ASoC: fsl-ssi: Remove useless DMA code

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Simplify dma DT property handling. fsl,ssi-dma-events is not used
anymore. It passes invalid data to imx_pcm_dma_params_init_data() which
copies some data into an imx dma struct. This struct is never used in
imx-dma or imx-sdma because of generic OF DMA handling. The
"fsl,ssi-dma-events" is not used anywhere in dts files.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Tested-By: Michael Grzeschik <mgr@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Markus Pargmann 2014-04-28 12:54:46 +02:00 committed by Mark Brown
parent 49da09e265
commit ed0f1604e9
1 changed files with 3 additions and 37 deletions
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40
sound/soc/fsl/fsl_ssi.c
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@ -168,8 +168,6 @@ struct fsl_ssi_private {
struct clk *clk;
struct snd_dmaengine_dai_dma_data dma_params_tx;
struct snd_dmaengine_dai_dma_data dma_params_rx;
struct imx_dma_data filter_data_tx;
struct imx_dma_data filter_data_rx;
struct imx_pcm_fiq_params fiq_params;
/* Register values for rx/tx configuration */
struct fsl_ssi_rxtx_reg_val rxtx_reg_val;
@ -996,8 +994,7 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev,
struct fsl_ssi_private *ssi_private)
{
struct device_node *np = pdev->dev.of_node;
u32 dma_events[2], dmas[4];
bool shared;
u32 dmas[4];
int ret;
ssi_private->clk = devm_clk_get(&pdev->dev, NULL);
@ -1033,26 +1030,9 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev,
offsetof(struct ccsr_ssi, stx0);
ssi_private->dma_params_rx.addr = ssi_private->ssi_phys +
offsetof(struct ccsr_ssi, srx0);
ssi_private->dma_params_tx.filter_data = &ssi_private->filter_data_tx;
ssi_private->dma_params_rx.filter_data = &ssi_private->filter_data_rx;
if (!of_property_read_bool(pdev->dev.of_node, "dmas") &&
ssi_private->use_dma) {
/*
* FIXME: This is a temporary solution until all
* necessary dma drivers support the generic dma
* bindings.
*/
ret = of_property_read_u32_array(pdev->dev.of_node,
"fsl,ssi-dma-events", dma_events, 2);
if (ret && ssi_private->use_dma) {
dev_err(&pdev->dev, "could not get dma events but fsl-ssi is configured to use DMA\n");
goto error_dma_events;
}
}
/* Should this be merge with the above? */
if (!of_property_read_u32_array(pdev->dev.of_node, "dmas", dmas, 4)
&& dmas[2] == IMX_DMATYPE_SSI_DUAL) {
ret = !of_property_read_u32_array(np, "dmas", dmas, 4);
if (ssi_private->use_dma && !ret && dmas[2] == IMX_DMATYPE_SSI_DUAL) {
ssi_private->use_dual_fifo = true;
/* When using dual fifo mode, we need to keep watermark
* as even numbers due to dma script limitation.
@ -1061,21 +1041,7 @@ static int fsl_ssi_imx_probe(struct platform_device *pdev,
ssi_private->dma_params_rx.maxburst &= ~0x1;
}
shared = of_device_is_compatible(of_get_parent(np), "fsl,spba-bus");
imx_pcm_dma_params_init_data(&ssi_private->filter_data_tx,
dma_events[0], shared ? IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI);
imx_pcm_dma_params_init_data(&ssi_private->filter_data_rx,
dma_events[1], shared ? IMX_DMATYPE_SSI_SP : IMX_DMATYPE_SSI);
return 0;
error_dma_events:
if (!IS_ERR(ssi_private->baudclk))
clk_disable_unprepare(ssi_private->baudclk);
clk_disable_unprepare(ssi_private->clk);
return ret;
}
static void fsl_ssi_imx_clean(struct platform_device *pdev,