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yaml
---
r: 270275
b: refs/heads/master
c: 714c4a6
h: refs/heads/master
i:
  270273: b742da6
  270271: bdb7c70
v: v3
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Guennadi Liakhovetski authored and Chris Ball committed Oct 26, 2011
1 parent 2703d5d commit bb68f5e
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Showing 3 changed files with 20 additions and 6 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 67716327eec7e9d573e7cb2d806545d6f7c1a38d
refs/heads/master: 714c4a6e3a0f730834ec8a8bc83b2a6da33f54dc
20 changes: 16 additions & 4 deletions trunk/drivers/mmc/host/sh_mmcif.c
Original file line number Diff line number Diff line change
Expand Up @@ -165,6 +165,8 @@ struct sh_mmcif_host {
struct mmc_host *mmc;
struct mmc_data *data;
struct platform_device *pd;
struct sh_dmae_slave dma_slave_tx;
struct sh_dmae_slave dma_slave_rx;
struct clk *hclk;
unsigned int clk;
int bus_width;
Expand Down Expand Up @@ -323,25 +325,35 @@ static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
struct sh_mmcif_plat_data *pdata)
{
struct sh_dmae_slave *tx, *rx;
host->dma_active = false;

/* We can only either use DMA for both Tx and Rx or not use it at all */
if (pdata->dma) {
dev_warn(&host->pd->dev,
"Update your platform to use embedded DMA slave IDs\n");
tx = &pdata->dma->chan_priv_tx;
rx = &pdata->dma->chan_priv_rx;
} else {
tx = &host->dma_slave_tx;
tx->slave_id = pdata->slave_id_tx;
rx = &host->dma_slave_rx;
rx->slave_id = pdata->slave_id_rx;
}
if (tx->slave_id > 0 && rx->slave_id > 0) {
dma_cap_mask_t mask;

dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);

host->chan_tx = dma_request_channel(mask, sh_mmcif_filter,
&pdata->dma->chan_priv_tx);
host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
host->chan_tx);

if (!host->chan_tx)
return;

host->chan_rx = dma_request_channel(mask, sh_mmcif_filter,
&pdata->dma->chan_priv_rx);
host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
host->chan_rx);

Expand Down
4 changes: 3 additions & 1 deletion trunk/include/linux/mmc/sh_mmcif.h
Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,9 @@ struct sh_mmcif_plat_data {
void (*set_pwr)(struct platform_device *pdev, int state);
void (*down_pwr)(struct platform_device *pdev);
int (*get_cd)(struct platform_device *pdef);
struct sh_mmcif_dma *dma;
struct sh_mmcif_dma *dma; /* Deprecated. Instead */
unsigned int slave_id_tx; /* use embedded slave_id_[tr]x */
unsigned int slave_id_rx;
u8 sup_pclk; /* 1 :SH7757, 0: SH7724/SH7372 */
unsigned long caps;
u32 ocr;
Expand Down

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