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path: root/drivers/mmc/host/tmio_mmc.c
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Diffstat (limited to 'drivers/mmc/host/tmio_mmc.c')
-rw-r--r--drivers/mmc/host/tmio_mmc.c30
1 files changed, 25 insertions, 5 deletions
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
index 69d98e3..e7765a8 100644
--- a/drivers/mmc/host/tmio_mmc.c
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -658,14 +658,21 @@ static void tmio_mmc_release_dma(struct tmio_mmc_host *host)
static int tmio_mmc_start_data(struct tmio_mmc_host *host,
struct mmc_data *data)
{
+ struct mfd_cell *cell = host->pdev->dev.platform_data;
+ struct tmio_mmc_data *pdata = cell->driver_data;
+
pr_debug("setup data transfer: blocksize %08x nr_blocks %d\n",
data->blksz, data->blocks);
- /* Hardware cannot perform 1 and 2 byte requests in 4 bit mode */
- if (data->blksz < 4 && host->mmc->ios.bus_width == MMC_BUS_WIDTH_4) {
- pr_err("%s: %d byte block unsupported in 4 bit mode\n",
- mmc_hostname(host->mmc), data->blksz);
- return -EINVAL;
+ /* Some hardware cannot perform 2 byte requests in 4 bit mode */
+ if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_4) {
+ int blksz_2bytes = pdata->flags & TMIO_MMC_BLKSZ_2BYTES;
+
+ if (data->blksz < 2 || (data->blksz < 4 && !blksz_2bytes)) {
+ pr_err("%s: %d byte block unsupported in 4 bit mode\n",
+ mmc_hostname(host->mmc), data->blksz);
+ return -EINVAL;
+ }
}
tmio_mmc_init_sg(host, data);
@@ -756,10 +763,23 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
(sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)) ? 0 : 1;
}
+static int tmio_mmc_get_cd(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct mfd_cell *cell = host->pdev->dev.platform_data;
+ struct tmio_mmc_data *pdata = cell->driver_data;
+
+ if (!pdata->get_cd)
+ return -ENOSYS;
+ else
+ return pdata->get_cd(host->pdev);
+}
+
static const struct mmc_host_ops tmio_mmc_ops = {
.request = tmio_mmc_request,
.set_ios = tmio_mmc_set_ios,
.get_ro = tmio_mmc_get_ro,
+ .get_cd = tmio_mmc_get_cd,
};
#ifdef CONFIG_PM