diff options
Diffstat (limited to 'drivers/mmc/host/bcm2835.c')
| -rw-r--r-- | drivers/mmc/host/bcm2835.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c index 7847f0c8b465..4fced9b36c80 100644 --- a/drivers/mmc/host/bcm2835.c +++ b/drivers/mmc/host/bcm2835.c @@ -44,6 +44,7 @@ #include <linux/scatterlist.h> #include <linux/time.h> #include <linux/workqueue.h> +#include <linux/string_choices.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> @@ -391,8 +392,7 @@ static void bcm2835_transfer_block_pio(struct bcm2835_host *host, bool is_read) if (time_after(jiffies, wait_max)) { dev_err(dev, "PIO %s timeout - EDM %08x\n", - is_read ? "read" : "write", - edm); + str_read_write(is_read), edm); hsts = SDHSTS_REW_TIME_OUT; break; } @@ -435,12 +435,12 @@ static void bcm2835_transfer_pio(struct bcm2835_host *host) SDHSTS_CRC7_ERROR | SDHSTS_FIFO_ERROR)) { dev_err(dev, "%s transfer error - HSTS %08x\n", - is_read ? "read" : "write", sdhsts); + str_read_write(is_read), sdhsts); host->data->error = -EILSEQ; } else if ((sdhsts & (SDHSTS_CMD_TIME_OUT | SDHSTS_REW_TIME_OUT))) { dev_err(dev, "%s timeout error - HSTS %08x\n", - is_read ? "read" : "write", sdhsts); + str_read_write(is_read), sdhsts); host->data->error = -ETIMEDOUT; } } @@ -503,7 +503,8 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data) DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { - dma_unmap_sg(dma_chan->device->dev, data->sg, sg_len, dir_data); + dma_unmap_sg(dma_chan->device->dev, data->sg, data->sg_len, + dir_data); return; } @@ -1343,6 +1344,25 @@ static int bcm2835_add_host(struct bcm2835_host *host) return 0; } +static int bcm2835_suspend(struct device *dev) +{ + struct bcm2835_host *host = dev_get_drvdata(dev); + + clk_disable_unprepare(host->clk); + + return 0; +} + +static int bcm2835_resume(struct device *dev) +{ + struct bcm2835_host *host = dev_get_drvdata(dev); + + return clk_prepare_enable(host->clk); +} + +static DEFINE_SIMPLE_DEV_PM_OPS(bcm2835_pm_ops, bcm2835_suspend, + bcm2835_resume); + static int bcm2835_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -1471,6 +1491,7 @@ static struct platform_driver bcm2835_driver = { .name = "sdhost-bcm2835", .probe_type = PROBE_PREFER_ASYNCHRONOUS, .of_match_table = bcm2835_match, + .pm = pm_ptr(&bcm2835_pm_ops), }, }; module_platform_driver(bcm2835_driver); |