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mmc: bfin_sdh: set timeout based on actual card data
The hardcoded value doesn't really work for all cards. Signed-off-by: Cliff Cai <cliff.cai@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: <linux-mmc@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 6 additions and 2 deletions
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@ -115,6 +115,7 @@ static int sdh_setup_data(struct sdh_host *host, struct mmc_data *data)
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unsigned int length;
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unsigned int data_ctl;
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unsigned int dma_cfg;
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unsigned int cycle_ns, timeout;
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dev_dbg(mmc_dev(host->mmc), "%s enter flags: 0x%x\n", __func__, data->flags);
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host->data = data;
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@ -135,8 +136,11 @@ static int sdh_setup_data(struct sdh_host *host, struct mmc_data *data)
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data_ctl |= ((ffs(data->blksz) - 1) << 4);
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bfin_write_SDH_DATA_CTL(data_ctl);
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bfin_write_SDH_DATA_TIMER(0xFFFF);
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/* the time of a host clock period in ns */
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cycle_ns = 1000000000 / (get_sclk() / (2 * (host->clk_div + 1)));
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timeout = data->timeout_ns / cycle_ns;
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timeout += data->timeout_clks;
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bfin_write_SDH_DATA_TIMER(timeout);
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SSYNC();
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if (data->flags & MMC_DATA_READ) {
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