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mmc: s3cmci: Use DMA slave map rather than exported DMA filter 

Support for DMA slave map has been added to the s3c24xx-dma
controller in commit 34681d84a0
"dmaengine: s3c24xx: Add dma_slave_map for s3c2440 devices"
This patch converts the s3cmci driver to also use it, so we can
eventually get rid of the exported filter function once all
related DMA clients are updated.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Sylwester Nawrocki 2016-10-26 18:30:53 +02:00 committed by Ulf Hansson
parent c2c24819b2
commit 18fae5c45c
1 changed files with 4 additions and 11 deletions
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15
drivers/mmc/host/s3cmci.c
View File

@ -28,7 +28,6 @@
#include <mach/dma.h>
#include <mach/gpio-samsung.h>
#include <linux/platform_data/dma-s3c24xx.h>
#include <linux/platform_data/mmc-s3cmci.h>
#include "s3cmci.h"
@ -1682,19 +1681,13 @@ static int s3cmci_probe(struct platform_device *pdev)
gpio_direction_input(host->pdata->gpio_wprotect);
}
/* depending on the dma state, get a dma channel to use. */
/* Depending on the dma state, get a DMA channel to use. */
if (s3cmci_host_usedma(host)) {
dma_cap_mask_t mask;
dma_cap_zero(mask);
dma_cap_set(DMA_SLAVE, mask);
host->dma = dma_request_slave_channel_compat(mask,
s3c24xx_dma_filter, (void *)DMACH_SDI, &pdev->dev, "rx-tx");
if (!host->dma) {
host->dma = dma_request_chan(&pdev->dev, "rx-tx");
ret = PTR_ERR_OR_ZERO(host->dma);
if (ret) {
dev_err(&pdev->dev, "cannot get DMA channel.\n");
ret = -EBUSY;
goto probe_free_gpio_wp;
}
}