Data transfers on third OMAP3 MMC controller don't work
because DMA line numbers are only defined for MMC1 and MMC2.
Fix that and store line numbers in mmc_omap_host structure
to reduce code size.
Tested on OMAP3 pandora board.
Signed-off-by: Grazvydas Ignotas <notasas@xxxxxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 31 +++++++++++++++++++++++--------
1 files changed, 23 insertions(+), 8 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 70d8d78..a2c4aee 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -97,6 +97,7 @@
*/
#define OMAP_MMC1_DEVID 0
#define OMAP_MMC2_DEVID 1
+#define OMAP_MMC3_DEVID 2
#define OMAP_MMC_DATADIR_NONE 0
#define OMAP_MMC_DATADIR_READ 1
@@ -148,6 +149,7 @@ struct mmc_omap_host {
int irq;
int carddetect;
int use_dma, dma_ch;
+ int dma_line_tx, dma_line_rx;
int initstr;
int slot_id;
int dbclk_enabled;
@@ -672,16 +674,10 @@ mmc_omap_start_dma_transfer(struct mmc_omap_host *host, struct mmc_request *req)
if (!(data->flags & MMC_DATA_WRITE)) {
host->dma_dir = DMA_FROM_DEVICE;
- if (host->id == OMAP_MMC1_DEVID)
- sync_dev = OMAP24XX_DMA_MMC1_RX;
- else
- sync_dev = OMAP24XX_DMA_MMC2_RX;
+ sync_dev = host->dma_line_rx;
} else {
host->dma_dir = DMA_TO_DEVICE;
- if (host->id == OMAP_MMC1_DEVID)
- sync_dev = OMAP24XX_DMA_MMC1_TX;
- else
- sync_dev = OMAP24XX_DMA_MMC2_TX;
+ sync_dev = host->dma_line_tx;
}
ret = omap_request_dma(sync_dev, "MMC/SD", mmc_omap_dma_cb,
@@ -1058,6 +1054,25 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) | SDBP);
+ /* Select DMA lines */
+ switch (host->id) {
+ case OMAP_MMC1_DEVID:
+ host->dma_line_tx = OMAP24XX_DMA_MMC1_TX;
+ host->dma_line_rx = OMAP24XX_DMA_MMC1_RX;
+ break;
+ case OMAP_MMC2_DEVID:
+ host->dma_line_tx = OMAP24XX_DMA_MMC2_TX;
+ host->dma_line_rx = OMAP24XX_DMA_MMC2_RX;
+ break;
+ case OMAP_MMC3_DEVID:
+ host->dma_line_tx = OMAP34XX_DMA_MMC3_TX;
+ host->dma_line_rx = OMAP34XX_DMA_MMC3_RX;
+ break;
+ default:
+ dev_err(mmc_dev(host->mmc), "Invalid MMC id\n");
+ goto err_irq;
+ }
+
/* Request IRQ for MMC operations */
ret = request_irq(host->irq, mmc_omap_irq, IRQF_DISABLED,
mmc_hostname(mmc), host);
--
1.5.4.3
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
