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MCI: imx: convert to streaming DMA ops 

Move to the common streaming DMA ops in order to get rid of
the direct usage of the ARM MMU functions for the cache
maintenance.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Lucas Stach 2015-03-05 22:50:05 +01:00 committed by Sascha Hauer
parent 451967e8b9
commit e31aa8badc
1 changed files with 17 additions and 11 deletions
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28
drivers/mci/imx-esdhc.c
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@ -22,6 +22,7 @@
*/
#include <config.h>
#include <common.h>
#include <dma.h>
#include <driver.h>
#include <init.h>
#include <of.h>
@ -31,7 +32,6 @@
#include <io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/mmu.h>
#include <mach/generic.h>
#include <mach/esdhc.h>
#include <gpio.h>
@ -211,6 +211,7 @@ esdhc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
u32 irqstat;
struct fsl_esdhc_host *host = to_fsl_esdhc(mci);
void __iomem *regs = host->regs;
unsigned int num_bytes = 0;
int ret;
esdhc_write32(regs + SDHCI_INT_STATUS, -1);
@ -225,12 +226,15 @@ esdhc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
err = esdhc_setup_data(mci, data);
if(err)
return err;
if (data->flags & MMC_DATA_WRITE) {
dma_flush_range((unsigned long)data->src,
(unsigned long)(data->src + data->blocks * 512));
} else
dma_clean_range((unsigned long)data->src,
(unsigned long)(data->src + data->blocks * 512));
num_bytes = data->blocks * data->blocksize;
if (data->flags & MMC_DATA_WRITE)
dma_sync_single_for_device((unsigned long)data->src,
num_bytes, DMA_TO_DEVICE);
else
dma_sync_single_for_device((unsigned long)data->dest,
num_bytes, DMA_FROM_DEVICE);
}
@ -313,10 +317,12 @@ esdhc_send_cmd(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
} while (!(irqstat & IRQSTAT_TC) &&
(esdhc_read32(regs + SDHCI_PRESENT_STATE) & PRSSTAT_DLA));
if (data->flags & MMC_DATA_READ) {
dma_inv_range((unsigned long)data->dest,
(unsigned long)(data->dest + data->blocks * 512));
}
if (data->flags & MMC_DATA_WRITE)
dma_sync_single_for_cpu((unsigned long)data->src,
num_bytes, DMA_TO_DEVICE);
else
dma_sync_single_for_cpu((unsigned long)data->dest,
num_bytes, DMA_FROM_DEVICE);
#endif
}