[PATCH 9/9] OMAP: HSMMC: SDBP and missing clock enabled fixes

[Adrian Hunter <ext-adrian.hunter@xxxxxxxxx>]

From: Jarkko Lavinen <jarkko.lavinen@xxxxxxxxx>
Date: Wed, 19 Nov 2008 15:49:52 +0200

Disable SDBP at suspend and enable it resume. Make sure
fclk is running at suspend before touching HCTL.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@xxxxxxxxx>
---
drivers/mmc/host/omap_hsmmc.c |   31 ++++++++++++-------------------
1 files changed, 12 insertions(+), 19 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 6058a70..78c5c18 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -897,10 +897,7 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
		OMAP_HSMMC_WRITE(host->base, CON,
				OMAP_HSMMC_READ(host->base, CON) | OD);

-	if (ios->power_mode == MMC_POWER_OFF)
-		mmc_omap_fclk_state(host, OFF);
-	else
-		mmc_omap_fclk_lazy_disable(host);
+	mmc_omap_fclk_lazy_disable(host);
}

static int omap_hsmmc_get_cd(struct mmc_host *mmc)
@@ -1207,12 +1204,11 @@ static int omap_mmc_suspend(struct platform_device *pdev, pm_message_t state)
		return 0;

	if (host) {
-		mmc_omap_fclk_state(host, ON);
-
		ret = mmc_suspend_host(host->mmc, state);
		if (ret == 0) {
			host->suspended = 1;

+			mmc_omap_fclk_state(host, ON);
			OMAP_HSMMC_WRITE(host->base, ISE, 0);
			OMAP_HSMMC_WRITE(host->base, IE, 0);

@@ -1224,19 +1220,8 @@ static int omap_mmc_suspend(struct platform_device *pdev, pm_message_t state)
						" level suspend\n");
			}

-			if (!(OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET)) {
-				u32 hctl = OMAP_HSMMC_READ(host->base, HCTL) &
-					SDVSCLR;
-
-				if (host->id == OMAP_MMC1_DEVID)
-					hctl |= SDVS30;
-				else
-					hctl |= SDVS18;
-
-				OMAP_HSMMC_WRITE(host->base, HCTL, hctl);
-				OMAP_HSMMC_WRITE(host->base, HCTL, hctl | SDBP);
-			}
-
+			OMAP_HSMMC_WRITE(host->base, HCTL,
+					 OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
			mmc_omap_fclk_state(host, OFF);
			clk_disable(host->iclk);
			clk_disable(host->dbclk);
@@ -1256,6 +1241,7 @@ static int omap_mmc_resume(struct platform_device *pdev)
		return 0;

	if (host) {
+		int i;
		if (mmc_omap_fclk_state(host, ON) != 0)
			goto clk_en_err;

@@ -1270,6 +1256,13 @@ static int omap_mmc_resume(struct platform_device *pdev)
			dev_dbg(mmc_dev(host->mmc),
					"Enabling debounce clk failed\n");

+		OMAP_HSMMC_WRITE(host->base, HCTL,
+				 OMAP_HSMMC_READ(host->base, HCTL) | SDBP);
+
+		for (i = 0; i < 100; i++)
+			if (OMAP_HSMMC_READ(host->base, HCTL) & SDBP)
+				break;
+
		if (host->pdata->resume) {
			ret = host->pdata->resume(&pdev->dev, host->slot_id);
			if (ret)
--
1.5.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html