The patch titled
omap_hsmmc: ensure all clock enables and disables are paired
has been removed from the -mm tree. Its filename was
omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: omap_hsmmc: ensure all clock enables and disables are paired
From: Adrian Hunter <[email protected]>
[[email protected]: fix for the db clock failure message]
Signed-off-by: Adrian Hunter <[email protected]>
Acked-by: Matt Fleming <[email protected]>
Cc: Ian Molton <[email protected]>
Cc: "Roberto A. Foglietta" <[email protected]>
Cc: Jarkko Lavinen <[email protected]>
Cc: Denis Karpov <[email protected]>
Cc: Pierre Ossman <[email protected]>
Cc: Philip Langdale <[email protected]>
Cc: "Madhusudhan" <[email protected]>
Cc: <[email protected]>
Signed-off-by: Madhusudhan Chikkature <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
drivers/mmc/host/omap_hsmmc.c | 60 +++++++++++++++++---------------
1 file changed, 33 insertions(+), 27 deletions(-)
diff -puN
drivers/mmc/host/omap_hsmmc.c~omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired
drivers/mmc/host/omap_hsmmc.c
---
a/drivers/mmc/host/omap_hsmmc.c~omap_hsmmc-ensure-all-clock-enables-and-disables-are-paired
+++ a/drivers/mmc/host/omap_hsmmc.c
@@ -162,7 +162,7 @@ struct omap_hsmmc_host {
int use_dma, dma_ch;
int dma_line_tx, dma_line_rx;
int slot_id;
- int dbclk_enabled;
+ int got_dbclk;
int response_busy;
int context_loss;
int dpm_state;
@@ -742,22 +742,24 @@ static int omap_hsmmc_switch_opcond(stru
/* Disable the clocks */
clk_disable(host->fclk);
clk_disable(host->iclk);
- clk_disable(host->dbclk);
+ if (host->got_dbclk)
+ clk_disable(host->dbclk);
/* Turn the power off */
ret = mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);
- if (ret != 0)
- goto err;
/* Turn the power ON with given VDD 1.8 or 3.0v */
- ret = mmc_slot(host).set_power(host->dev, host->slot_id, 1, vdd);
+ if (!ret)
+ ret = mmc_slot(host).set_power(host->dev, host->slot_id, 1,
+ vdd);
+ clk_enable(host->iclk);
+ clk_enable(host->fclk);
+ if (host->got_dbclk)
+ clk_enable(host->dbclk);
+
if (ret != 0)
goto err;
- clk_enable(host->fclk);
- clk_enable(host->iclk);
- clk_enable(host->dbclk);
-
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) & SDVSCLR);
reg_val = OMAP_HSMMC_READ(host->base, HCTL);
@@ -1695,18 +1697,22 @@ static int __init omap_hsmmc_probe(struc
goto err1;
}
- host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
- /*
- * MMC can still work without debounce clock.
- */
- if (IS_ERR(host->dbclk))
- dev_warn(mmc_dev(host->mmc), "Failed to get debounce clock\n");
- else
- if (clk_enable(host->dbclk) != 0)
- dev_dbg(mmc_dev(host->mmc), "Enabling debounce"
- " clk failed\n");
+ if (cpu_is_omap2430()) {
+ host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck");
+ /*
+ * MMC can still work without debounce clock.
+ */
+ if (IS_ERR(host->dbclk))
+ dev_warn(mmc_dev(host->mmc),
+ "Failed to get debounce clock\n");
else
- host->dbclk_enabled = 1;
+ host->got_dbclk = 1;
+
+ if (host->got_dbclk)
+ if (clk_enable(host->dbclk) != 0)
+ dev_dbg(mmc_dev(host->mmc), "Enabling debounce"
+ " clk failed\n");
+ }
/* Since we do only SG emulation, we can have as many segs
* as we want. */
@@ -1820,7 +1826,7 @@ err_irq:
clk_disable(host->iclk);
clk_put(host->fclk);
clk_put(host->iclk);
- if (host->dbclk_enabled) {
+ if (host->got_dbclk) {
clk_disable(host->dbclk);
clk_put(host->dbclk);
}
@@ -1854,7 +1860,7 @@ static int omap_hsmmc_remove(struct plat
clk_disable(host->iclk);
clk_put(host->fclk);
clk_put(host->iclk);
- if (host->dbclk_enabled) {
+ if (host->got_dbclk) {
clk_disable(host->dbclk);
clk_put(host->dbclk);
}
@@ -1905,7 +1911,8 @@ static int omap_hsmmc_suspend(struct pla
OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
mmc_host_disable(host->mmc);
clk_disable(host->iclk);
- clk_disable(host->dbclk);
+ if (host->got_dbclk)
+ clk_disable(host->dbclk);
} else {
host->suspended = 0;
if (host->pdata->resume) {
@@ -1936,15 +1943,14 @@ static int omap_hsmmc_resume(struct plat
if (ret)
goto clk_en_err;
- if (clk_enable(host->dbclk) != 0)
- dev_dbg(mmc_dev(host->mmc),
- "Enabling debounce clk failed\n");
-
if (mmc_host_enable(host->mmc) != 0) {
clk_disable(host->iclk);
goto clk_en_err;
}
+ if (host->got_dbclk)
+ clk_enable(host->dbclk);
+
omap_hsmmc_conf_bus_power(host);
if (host->pdata->resume) {
_
Patches currently in -mm which might be from [email protected] are
origin.patch
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
