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Subject[PATCH 4/4] mmc: omap_hsmmc: Change wake-up interrupt to use generic wakeirq
Date
We can now use generic wakeirq handling and remove the custom handling
for the wake-up interrupts.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
drivers/mmc/host/omap_hsmmc.c | 55 +++++++++++--------------------------------
1 file changed, 14 insertions(+), 41 deletions(-)

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index f84cfb0..32f4559 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -43,6 +43,7 @@
#include <linux/regulator/consumer.h>
#include <linux/pinctrl/consumer.h>
#include <linux/pm_runtime.h>
+#include <linux/pm_wakeirq.h>
#include <linux/platform_data/hsmmc-omap.h>

/* OMAP HSMMC Host Controller Registers */
@@ -205,6 +206,7 @@ struct omap_hsmmc_host {
u32 capa;
int irq;
int wake_irq;
+ struct wakeirq_source *wirq;
int use_dma, dma_ch;
struct dma_chan *tx_chan;
struct dma_chan *rx_chan;
@@ -218,7 +220,6 @@ struct omap_hsmmc_host {
unsigned int flags;
#define AUTO_CMD23 (1 << 0) /* Auto CMD23 support */
#define HSMMC_SDIO_IRQ_ENABLED (1 << 1) /* SDIO irq enabled */
-#define HSMMC_WAKE_IRQ_ENABLED (1 << 2)
struct omap_hsmmc_next next_data;
struct omap_hsmmc_platform_data *pdata;

@@ -1135,22 +1136,6 @@ static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}

-static irqreturn_t omap_hsmmc_wake_irq(int irq, void *dev_id)
-{
- struct omap_hsmmc_host *host = dev_id;
-
- /* cirq is level triggered, disable to avoid infinite loop */
- spin_lock(&host->irq_lock);
- if (host->flags & HSMMC_WAKE_IRQ_ENABLED) {
- disable_irq_nosync(host->wake_irq);
- host->flags &= ~HSMMC_WAKE_IRQ_ENABLED;
- }
- spin_unlock(&host->irq_lock);
- pm_request_resume(host->dev); /* no use counter */
-
- return IRQ_HANDLED;
-}
-
static void set_sd_bus_power(struct omap_hsmmc_host *host)
{
unsigned long i;
@@ -1695,7 +1680,6 @@ static void omap_hsmmc_enable_sdio_irq(struct mmc_host *mmc, int enable)

static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
{
- struct mmc_host *mmc = host->mmc;
int ret;

/*
@@ -1707,11 +1691,12 @@ static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
if (!host->dev->of_node || !host->wake_irq)
return -ENODEV;

- /* Prevent auto-enabling of IRQ */
- irq_set_status_flags(host->wake_irq, IRQ_NOAUTOEN);
- ret = devm_request_irq(host->dev, host->wake_irq, omap_hsmmc_wake_irq,
- IRQF_TRIGGER_LOW | IRQF_ONESHOT,
- mmc_hostname(mmc), host);
+ host->wirq = devm_kzalloc(host->dev, sizeof(*host->wirq),
+ GFP_KERNEL);
+ if (!host->wirq)
+ return -ENOMEM;
+ ret = dev_pm_wakeirq_request(host->dev, host->wake_irq, NULL, 0, NULL,
+ host->wirq);
if (ret) {
dev_err(mmc_dev(host->mmc), "Unable to request wake IRQ\n");
goto err;
@@ -1748,7 +1733,7 @@ static int omap_hsmmc_configure_wake_irq(struct omap_hsmmc_host *host)
return 0;

err_free_irq:
- devm_free_irq(host->dev, host->wake_irq, host);
+ dev_pm_wakeirq_free(host->wirq);
err:
dev_warn(host->dev, "no SDIO IRQ support, falling back to polling\n");
host->wake_irq = 0;
@@ -2254,10 +2239,10 @@ static int omap_hsmmc_suspend(struct device *dev)
OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP);
}

- /* do not wake up due to sdio irq */
if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
- !(host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ))
- disable_irq(host->wake_irq);
+ (host->flags & HSMMC_SDIO_IRQ_ENABLED) &&
+ (host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ))
+ dev_pm_wakeirq_arm_for_suspend(host->wirq);

if (host->dbclk)
clk_disable_unprepare(host->dbclk);
@@ -2283,11 +2268,6 @@ static int omap_hsmmc_resume(struct device *dev)
omap_hsmmc_conf_bus_power(host);

omap_hsmmc_protect_card(host);
-
- if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
- !(host->mmc->pm_flags & MMC_PM_WAKE_SDIO_IRQ))
- enable_irq(host->wake_irq);
-
pm_runtime_mark_last_busy(host->dev);
pm_runtime_put_autosuspend(host->dev);
return 0;
@@ -2331,10 +2311,7 @@ static int omap_hsmmc_runtime_suspend(struct device *dev)
}

pinctrl_pm_select_idle_state(dev);
-
- WARN_ON(host->flags & HSMMC_WAKE_IRQ_ENABLED);
- enable_irq(host->wake_irq);
- host->flags |= HSMMC_WAKE_IRQ_ENABLED;
+ dev_pm_wakeirq_enable(host->wirq);
} else {
pinctrl_pm_select_idle_state(dev);
}
@@ -2356,11 +2333,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
spin_lock_irqsave(&host->irq_lock, flags);
if ((host->mmc->caps & MMC_CAP_SDIO_IRQ) &&
(host->flags & HSMMC_SDIO_IRQ_ENABLED)) {
- /* sdio irq flag can't change while in runtime suspend */
- if (host->flags & HSMMC_WAKE_IRQ_ENABLED) {
- disable_irq_nosync(host->wake_irq);
- host->flags &= ~HSMMC_WAKE_IRQ_ENABLED;
- }
+ dev_pm_wakeirq_disable(host->wirq);

pinctrl_pm_select_default_state(host->dev);

--
2.1.4


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