Commit 73a85069 authored by Stefan Wahren's avatar Stefan Wahren Committed by Ulf Hansson

mmc: mxs-mmc: Implement CMD23 support

This patch implements support for multiblock transfers bounded
by SET_BLOCK_COUNT (CMD23) on the MXS MMC host driver.
Signed-off-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent e81c022a
......@@ -153,7 +153,11 @@ static void mxs_mmc_request_done(struct mxs_mmc_host *host)
}
}
if (data) {
if (cmd == mrq->sbc) {
/* Finished CMD23, now send actual command. */
mxs_mmc_start_cmd(host, mrq->cmd);
return;
} else if (data) {
dma_unmap_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, ssp->dma_dir);
/*
......@@ -166,7 +170,7 @@ static void mxs_mmc_request_done(struct mxs_mmc_host *host)
data->bytes_xfered = 0;
host->data = NULL;
if (mrq->stop) {
if (data->stop && (data->error || !mrq->sbc)) {
mxs_mmc_start_cmd(host, mrq->stop);
return;
}
......@@ -495,6 +499,10 @@ static void mxs_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
WARN_ON(host->mrq != NULL);
host->mrq = mrq;
if (mrq->sbc)
mxs_mmc_start_cmd(host, mrq->sbc);
else
mxs_mmc_start_cmd(host, mrq->cmd);
}
......@@ -642,7 +650,7 @@ static int mxs_mmc_probe(struct platform_device *pdev)
/* set mmc core parameters */
mmc->ops = &mxs_mmc_ops;
mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL;
MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL | MMC_CAP_CMD23;
host->broken_cd = of_property_read_bool(np, "broken-cd");
......
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