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Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/omap_hsmmc.c68
1 files changed, 58 insertions, 10 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 259c07d61a8..7699f0aeb58 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -605,7 +605,9 @@ static void mmc_omap_detect(struct work_struct *work)
if (host->carddetect) {
mmc_detect_change(host->mmc, (HZ * 200) / 1000);
} else {
+ mmc_host_enable(host->mmc);
mmc_omap_reset_controller_fsm(host, SRD);
+ mmc_host_lazy_disable(host->mmc);
mmc_detect_change(host->mmc, (HZ * 50) / 1000);
}
}
@@ -818,6 +820,27 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
return 0;
}
+static int omap_mmc_enable(struct mmc_host *mmc)
+{
+ struct mmc_omap_host *host = mmc_priv(mmc);
+ int err;
+
+ err = clk_enable(host->fclk);
+ if (err)
+ return err;
+ dev_dbg(mmc_dev(host->mmc), "mmc_fclk: enabled\n");
+ return 0;
+}
+
+static int omap_mmc_disable(struct mmc_host *mmc, int lazy)
+{
+ struct mmc_omap_host *host = mmc_priv(mmc);
+
+ clk_disable(host->fclk);
+ dev_dbg(mmc_dev(host->mmc), "mmc_fclk: disabled\n");
+ return 0;
+}
+
/*
* Request function. for read/write operation
*/
@@ -841,6 +864,8 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
unsigned long timeout;
u32 con;
+ mmc_host_enable(host->mmc);
+
switch (ios->power_mode) {
case MMC_POWER_OFF:
mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0);
@@ -919,6 +944,8 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN)
OMAP_HSMMC_WRITE(host->base, CON,
OMAP_HSMMC_READ(host->base, CON) | OD);
+
+ mmc_host_lazy_disable(host->mmc);
}
static int omap_hsmmc_get_cd(struct mmc_host *mmc)
@@ -969,6 +996,8 @@ static void omap_hsmmc_init(struct mmc_omap_host *host)
}
static struct mmc_host_ops mmc_omap_ops = {
+ .enable = omap_mmc_enable,
+ .disable = omap_mmc_disable,
.request = omap_mmc_request,
.set_ios = omap_mmc_set_ios,
.get_cd = omap_hsmmc_get_cd,
@@ -983,7 +1012,16 @@ static int mmc_regs_show(struct seq_file *s, void *data)
struct mmc_host *mmc = s->private;
struct mmc_omap_host *host = mmc_priv(mmc);
- seq_printf(s, "mmc%d regs:\n", mmc->index);
+ seq_printf(s, "mmc%d:\n"
+ " enabled:\t%d\n"
+ " nesting_cnt:\t%d\n"
+ "\nregs:\n",
+ mmc->index, mmc->enabled ? 1 : 0, mmc->nesting_cnt);
+
+ if (clk_enable(host->fclk) != 0) {
+ seq_printf(s, "can't read the regs\n");
+ goto err;
+ }
seq_printf(s, "SYSCONFIG:\t0x%08x\n",
OMAP_HSMMC_READ(host->base, SYSCONFIG));
@@ -999,6 +1037,9 @@ static int mmc_regs_show(struct seq_file *s, void *data)
OMAP_HSMMC_READ(host->base, ISE));
seq_printf(s, "CAPA:\t\t0x%08x\n",
OMAP_HSMMC_READ(host->base, CAPA));
+
+ clk_disable(host->fclk);
+err:
return 0;
}
@@ -1099,14 +1140,16 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
goto err1;
}
- if (clk_enable(host->fclk) != 0) {
+ mmc->caps |= MMC_CAP_DISABLE;
+ mmc_set_disable_delay(mmc, 100);
+ if (mmc_host_enable(host->mmc) != 0) {
clk_put(host->iclk);
clk_put(host->fclk);
goto err1;
}
if (clk_enable(host->iclk) != 0) {
- clk_disable(host->fclk);
+ mmc_host_disable(host->mmc);
clk_put(host->iclk);
clk_put(host->fclk);
goto err1;
@@ -1197,6 +1240,8 @@ static int __init omap_mmc_probe(struct platform_device *pdev)
OMAP_HSMMC_WRITE(host->base, ISE, INT_EN_MASK);
OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK);
+ mmc_host_lazy_disable(host->mmc);
+
mmc_add_host(mmc);
if (host->pdata->slots[host->slot_id].name != NULL) {
@@ -1225,7 +1270,7 @@ err_irq_cd:
err_irq_cd_init:
free_irq(host->irq, host);
err_irq:
- clk_disable(host->fclk);
+ mmc_host_disable(host->mmc);
clk_disable(host->iclk);
clk_put(host->fclk);
clk_put(host->iclk);
@@ -1250,6 +1295,7 @@ static int omap_mmc_remove(struct platform_device *pdev)
struct resource *res;
if (host) {
+ mmc_host_enable(host->mmc);
mmc_remove_host(host->mmc);
if (host->pdata->cleanup)
host->pdata->cleanup(&pdev->dev);
@@ -1258,7 +1304,7 @@ static int omap_mmc_remove(struct platform_device *pdev)
free_irq(mmc_slot(host).card_detect_irq, host);
flush_scheduled_work();
- clk_disable(host->fclk);
+ mmc_host_disable(host->mmc);
clk_disable(host->iclk);
clk_put(host->fclk);
clk_put(host->iclk);
@@ -1289,6 +1335,7 @@ static int omap_mmc_suspend(struct platform_device *pdev, pm_message_t state)
return 0;
if (host) {
+ mmc_host_enable(host->mmc);
ret = mmc_suspend_host(host->mmc, state);
if (ret == 0) {
host->suspended = 1;
@@ -1307,10 +1354,11 @@ static int omap_mmc_suspend(struct platform_device *pdev, pm_message_t state)
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
- clk_disable(host->fclk);
+ mmc_host_disable(host->mmc);
clk_disable(host->iclk);
clk_disable(host->dbclk);
- }
+ } else
+ mmc_host_disable(host->mmc);
}
return ret;
@@ -1327,13 +1375,12 @@ static int omap_mmc_resume(struct platform_device *pdev)
if (host) {
- ret = clk_enable(host->fclk);
- if (ret)
+ if (mmc_host_enable(host->mmc) != 0)
goto clk_en_err;
ret = clk_enable(host->iclk);
if (ret) {
- clk_disable(host->fclk);
+ mmc_host_disable(host->mmc);
clk_put(host->fclk);
goto clk_en_err;
}
@@ -1355,6 +1402,7 @@ static int omap_mmc_resume(struct platform_device *pdev)
ret = mmc_resume_host(host->mmc);
if (ret == 0)
host->suspended = 0;
+ mmc_host_lazy_disable(host->mmc);
}
return ret;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-22 16:45:03 +0000