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>
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 67acc6a..6549f54 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -284,7 +284,7 @@
host->data = NULL;
if (host->mrq->stop) {
pxamci_stop_clock(host);
- pxamci_start_cmd(host, host->mrq->stop, 0);
+ pxamci_start_cmd(host, host->mrq->stop, host->cmdat);
} else {
pxamci_finish_request(host, host->mrq);
}
@@ -382,6 +382,11 @@
host->cmdat |= CMDAT_INIT;
}
+ if (ios->bus_width == MMC_BUS_WIDTH_4)
+ host->cmdat |= CMDAT_SD_4DAT;
+ else
+ host->cmdat &= ~CMDAT_SD_4DAT;
+
pr_debug("PXAMCI: clkrt = %x cmdat = %x\n",
host->clkrt, host->cmdat);
}
@@ -460,6 +465,9 @@
mmc->ocr_avail = host->pdata ?
host->pdata->ocr_mask :
MMC_VDD_32_33|MMC_VDD_33_34;
+ mmc->caps = 0;
+ if (!cpu_is_pxa21x() && !cpu_is_pxa25x())
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
if (!host->sg_cpu) {