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mmc: omap_hsmmc: add cmd23 support 

Add set block count command support for close ended multiblock read/write.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Balaji T K 2014-01-21 19:54:42 +05:30 committed by Chris Ball
parent 9d0253341b
commit bf129e1ca1
1 changed files with 17 additions and 4 deletions
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21
drivers/mmc/host/omap_hsmmc.c
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@ -202,6 +202,8 @@ struct omap_mmc_of_data {
u8 controller_flags; u8 controller_flags;
}; };
static void omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host);
static int omap_hsmmc_card_detect(struct device *dev, int slot) static int omap_hsmmc_card_detect(struct device *dev, int slot)
{ {
struct omap_hsmmc_host *host = dev_get_drvdata(dev); struct omap_hsmmc_host *host = dev_get_drvdata(dev);
@ -888,11 +890,10 @@ omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data)
else else
data->bytes_xfered = 0; data->bytes_xfered = 0;
if (!data->stop) { if (data->stop && (data->error || !host->mrq->sbc))
omap_hsmmc_start_command(host, data->stop, NULL);
else
omap_hsmmc_request_done(host, data->mrq); omap_hsmmc_request_done(host, data->mrq);
return;
}
omap_hsmmc_start_command(host, data->stop, NULL);
} }
/* /*
@ -903,6 +904,14 @@ omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd)
{ {
host->cmd = NULL; host->cmd = NULL;
if (host->mrq->sbc && (host->cmd == host->mrq->sbc) &&
!host->mrq->sbc->error) {
omap_hsmmc_start_dma_transfer(host);
omap_hsmmc_start_command(host, host->mrq->cmd,
host->mrq->data);
return;
}
if (cmd->flags & MMC_RSP_PRESENT) { if (cmd->flags & MMC_RSP_PRESENT) {
if (cmd->flags & MMC_RSP_136) { if (cmd->flags & MMC_RSP_136) {
/* response type 2 */ /* response type 2 */
@ -1504,6 +1513,10 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
mmc_request_done(mmc, req); mmc_request_done(mmc, req);
return; return;
} }
if (req->sbc) {
omap_hsmmc_start_command(host, req->sbc, NULL);
return;
}
omap_hsmmc_start_dma_transfer(host); omap_hsmmc_start_dma_transfer(host);
omap_hsmmc_start_command(host, req->cmd, req->data); omap_hsmmc_start_command(host, req->cmd, req->data);