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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mmc: pxamci: set proper buswidth capabilities according to PXA flavor
From PXA27x, it is possible to do 4-bit data transfers.
Signed-off-by: Bridge Wu <mingqiao.wu@gmail.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
authored by
Bridge Wu
and committed by
Pierre Ossman
df456f47
fe2dc44e
+10
-1
+9
-1
drivers/mmc/host/pxamci.c
+9
-1
drivers/mmc/host/pxamci.c
···
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host->data = NULL;
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if (host->mrq->stop) {
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pxamci_stop_clock(host);
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-
pxamci_start_cmd(host, host->mrq->stop, 0);
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+
pxamci_start_cmd(host, host->mrq->stop, host->cmdat);
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} else {
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pxamci_finish_request(host, host->mrq);
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}
···
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host->cmdat |= CMDAT_INIT;
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}
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+
if (ios->bus_width == MMC_BUS_WIDTH_4)
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+
host->cmdat |= CMDAT_SD_4DAT;
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+
else
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host->cmdat &= ~CMDAT_SD_4DAT;
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+
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pr_debug("PXAMCI: clkrt = %x cmdat = %x\n",
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host->clkrt, host->cmdat);
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}
···
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mmc->ocr_avail = host->pdata ?
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host->pdata->ocr_mask :
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MMC_VDD_32_33|MMC_VDD_33_34;
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+
mmc->caps = 0;
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+
if (!cpu_is_pxa21x() && !cpu_is_pxa25x())
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+
mmc->caps |= MMC_CAP_4_BIT_DATA;
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host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
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if (!host->sg_cpu) {