diff options
| author | Bridge Wu <mingqiao.wu@gmail.com> | 2007-09-25 19:09:19 +0200 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-09-25 19:11:39 +0200 |
| commit | df456f479aa6fdc812df51627c6f2c21d8a1aed8 (patch) | |
| tree | 8f8dd50213d429850e974fb3e996e5a150c8e1b2 /drivers/mmc | |
| parent | fe2dc44eac1223a0e92859242f58fd2a58a6f8fa (diff) | |
| download | op-kernel-dev-df456f479aa6fdc812df51627c6f2c21d8a1aed8.zip op-kernel-dev-df456f479aa6fdc812df51627c6f2c21d8a1aed8.tar.gz | |
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>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/pxamci.c | 10 | ||||
| -rw-r--r-- | drivers/mmc/host/pxamci.h | 1 |
2 files changed, 10 insertions, 1 deletions
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 @@ static int pxamci_data_done(struct pxamci_host *host, unsigned int stat) 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 @@ static void pxamci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) 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 @@ static int pxamci_probe(struct platform_device *pdev) 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) { diff --git a/drivers/mmc/host/pxamci.h b/drivers/mmc/host/pxamci.h index df17c28..5655be8 100644 --- a/drivers/mmc/host/pxamci.h +++ b/drivers/mmc/host/pxamci.h @@ -25,6 +25,7 @@ #define SPI_EN (1 << 0) #define MMC_CMDAT 0x0010 +#define CMDAT_SD_4DAT (1 << 8) #define CMDAT_DMAEN (1 << 7) #define CMDAT_INIT (1 << 6) #define CMDAT_BUSY (1 << 5) |
