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Commit 83d420ba authored by Alex Dubov's avatar Alex Dubov Committed by Pierre Ossman
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tifm_sd: fix hardware timeout setup 



The register access order when setting hardware timeout was incorrect and
causing problems (wrong timeout intervals). This is now fixed.

Signed-off-by: default avatarAlex Dubov <oakad@yahoo.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 0803dd0c

drivers/mmc/tifm_sd.c

+7 −8
Original line number Diff line number Diff line
@@ -442,22 +442,21 @@ static void tifm_sd_set_data_timeout(struct tifm_sd *host, 
		return;



	data_timeout += data->timeout_ns /

			((1000000000 / host->clk_freq) * host->clk_div);

	data_timeout *= 10; // call it fudge factor for now

			((1000000000UL / host->clk_freq) * host->clk_div);



	if (data_timeout < 0xffff) {

		writel((~TIFM_MMCSD_DPE) &

				readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),

		       sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);

		writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);

	} else {

		writel(TIFM_MMCSD_DPE |

				readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),

		writel((~TIFM_MMCSD_DPE)

		       & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),

		       sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);

	} else {

		data_timeout = (data_timeout >> 10) + 1;

		if(data_timeout > 0xffff)

			data_timeout = 0;	/* set to unlimited */

		writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);

		writel(TIFM_MMCSD_DPE

		       | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),

		       sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);

	}

}