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mmc: sdhi/tmio: add DT DMA support

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Add support for initialising DMA from the Device Tree.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski
2013-04-26 17:47:19 +02:00
committed by Chris Ball
parent eec95ee226
commit 87ae7bbebd
2 changed files with 19 additions and 14 deletions
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14
drivers/mmc/host/sh_mobile_sdhi.c
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@@ -144,6 +144,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
struct tmio_mmc_host *host;
int irq, ret, i = 0;
bool multiplexed_isr = true;
struct tmio_mmc_dma *dma_priv;
priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
if (priv == NULL) {
@@ -152,6 +153,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
}
mmc_data = &priv->mmc_data;
dma_priv = &priv->dma_priv;
if (p) {
if (p->init) {
@@ -184,8 +186,6 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data->get_cd = sh_mobile_sdhi_get_cd;
if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
struct tmio_mmc_dma *dma_priv = &priv->dma_priv;
/*
* Yes, we have to provide slave IDs twice to TMIO:
* once as a filter parameter and once for channel
@@ -195,14 +195,14 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
dma_priv->chan_priv_rx = (void *)p->dma_slave_rx;
dma_priv->slave_id_tx = p->dma_slave_tx;
dma_priv->slave_id_rx = p->dma_slave_rx;
dma_priv->alignment_shift = 1; /* 2-byte alignment */
dma_priv->filter = shdma_chan_filter;
mmc_data->dma = dma_priv;
}
}
dma_priv->alignment_shift = 1; /* 2-byte alignment */
dma_priv->filter = shdma_chan_filter;
mmc_data->dma = dma_priv;
/*
* All SDHI blocks support 2-byte and larger block sizes in 4-bit
* bus width mode.