From: Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
To: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
Grant Likely
<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>,
Linus Walleij
<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: [PATCH V3 1/9] gpio: tegra: add gpio wakeup source handling
Date: Wed, 13 Mar 2013 16:01:15 +0800 [thread overview]
Message-ID: <1363161683-20825-2-git-send-email-josephl@nvidia.com> (raw)
In-Reply-To: <1363161683-20825-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
This patch add the gpio wakeup source handling for the Tegra platform. It
was be done by enabling the irq for the gpio in the gpio controller and
enabling the bank irq of the gpio in the Tegra legacy irq controller when
the system going to suspend.
Based on the work by:
Varun Wadekar <vwadekar-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
Cc: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Signed-off-by: Joseph Lo <josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
---
V3:
* no change
V2:
* no change
---
drivers/gpio/gpio-tegra.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index a78a81f..2f1b265 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -72,6 +72,7 @@ struct tegra_gpio_bank {
u32 oe[4];
u32 int_enb[4];
u32 int_lvl[4];
+ u32 wake_enb[4];
#endif
};
@@ -333,15 +334,31 @@ static int tegra_gpio_suspend(struct device *dev)
bank->oe[p] = tegra_gpio_readl(GPIO_OE(gpio));
bank->int_enb[p] = tegra_gpio_readl(GPIO_INT_ENB(gpio));
bank->int_lvl[p] = tegra_gpio_readl(GPIO_INT_LVL(gpio));
+
+ /* Enable gpio irq for wake up source */
+ tegra_gpio_writel(bank->wake_enb[p],
+ GPIO_INT_ENB(gpio));
}
}
local_irq_restore(flags);
return 0;
}
-static int tegra_gpio_wake_enable(struct irq_data *d, unsigned int enable)
+static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
{
struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+ int gpio = d->hwirq;
+ u32 port, bit, mask;
+
+ port = GPIO_PORT(gpio);
+ bit = GPIO_BIT(gpio);
+ mask = BIT(bit);
+
+ if (enable)
+ bank->wake_enb[port] |= mask;
+ else
+ bank->wake_enb[port] &= ~mask;
+
return irq_set_irq_wake(bank->irq, enable);
}
#endif
@@ -353,7 +370,7 @@ static struct irq_chip tegra_gpio_irq_chip = {
.irq_unmask = tegra_gpio_irq_unmask,
.irq_set_type = tegra_gpio_irq_set_type,
#ifdef CONFIG_PM_SLEEP
- .irq_set_wake = tegra_gpio_wake_enable,
+ .irq_set_wake = tegra_gpio_irq_set_wake,
#endif
};
--
1.8.1.5
WARNING: multiple messages have this Message-ID (diff)
From: josephl@nvidia.com (Joseph Lo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V3 1/9] gpio: tegra: add gpio wakeup source handling
Date: Wed, 13 Mar 2013 16:01:15 +0800 [thread overview]
Message-ID: <1363161683-20825-2-git-send-email-josephl@nvidia.com> (raw)
In-Reply-To: <1363161683-20825-1-git-send-email-josephl@nvidia.com>
This patch add the gpio wakeup source handling for the Tegra platform. It
was be done by enabling the irq for the gpio in the gpio controller and
enabling the bank irq of the gpio in the Tegra legacy irq controller when
the system going to suspend.
Based on the work by:
Varun Wadekar <vwadekar@nvidia.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
---
V3:
* no change
V2:
* no change
---
drivers/gpio/gpio-tegra.c | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index a78a81f..2f1b265 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -72,6 +72,7 @@ struct tegra_gpio_bank {
u32 oe[4];
u32 int_enb[4];
u32 int_lvl[4];
+ u32 wake_enb[4];
#endif
};
@@ -333,15 +334,31 @@ static int tegra_gpio_suspend(struct device *dev)
bank->oe[p] = tegra_gpio_readl(GPIO_OE(gpio));
bank->int_enb[p] = tegra_gpio_readl(GPIO_INT_ENB(gpio));
bank->int_lvl[p] = tegra_gpio_readl(GPIO_INT_LVL(gpio));
+
+ /* Enable gpio irq for wake up source */
+ tegra_gpio_writel(bank->wake_enb[p],
+ GPIO_INT_ENB(gpio));
}
}
local_irq_restore(flags);
return 0;
}
-static int tegra_gpio_wake_enable(struct irq_data *d, unsigned int enable)
+static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
{
struct tegra_gpio_bank *bank = irq_data_get_irq_chip_data(d);
+ int gpio = d->hwirq;
+ u32 port, bit, mask;
+
+ port = GPIO_PORT(gpio);
+ bit = GPIO_BIT(gpio);
+ mask = BIT(bit);
+
+ if (enable)
+ bank->wake_enb[port] |= mask;
+ else
+ bank->wake_enb[port] &= ~mask;
+
return irq_set_irq_wake(bank->irq, enable);
}
#endif
@@ -353,7 +370,7 @@ static struct irq_chip tegra_gpio_irq_chip = {
.irq_unmask = tegra_gpio_irq_unmask,
.irq_set_type = tegra_gpio_irq_set_type,
#ifdef CONFIG_PM_SLEEP
- .irq_set_wake = tegra_gpio_wake_enable,
+ .irq_set_wake = tegra_gpio_irq_set_wake,
#endif
};
--
1.8.1.5
next prev parent reply other threads:[~2013-03-13 8:01 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-13 8:01 [PATCH V3 0/9] ARM: tegra: add platform suspend support Joseph Lo
2013-03-13 8:01 ` Joseph Lo
[not found] ` <1363161683-20825-1-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-03-13 8:01 ` Joseph Lo [this message]
2013-03-13 8:01 ` [PATCH V3 1/9] gpio: tegra: add gpio wakeup source handling Joseph Lo
[not found] ` <1363161683-20825-2-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-03-27 8:25 ` Linus Walleij
2013-03-27 8:25 ` Linus Walleij
2013-03-13 8:01 ` [PATCH V3 2/9] ARM: tegra: irq: add wake up handling Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 8:01 ` [PATCH V3 3/9] ARM: dt: tegra: add bindings of power management configurations for PMC Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 8:01 ` [PATCH V3 4/9] ARM: tegra: pm: add platform suspend support Joseph Lo
2013-03-13 8:01 ` Joseph Lo
[not found] ` <1363161683-20825-5-git-send-email-josephl-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2013-03-13 18:03 ` Stephen Warren
2013-03-13 18:03 ` Stephen Warren
2013-03-13 8:01 ` [PATCH V3 5/9] ARM: dts: tegra: add power gpio keys to DT Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 8:01 ` [PATCH V3 6/9] ARM: dts: tegra: whistler: add wakeup source for KBC Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 8:01 ` [PATCH V3 7/9] ARM: dts: tegra: add non-removable and keep-power-in-suspend property for MMC Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 8:01 ` [PATCH V3 8/9] ARM: tegra: config: defconfig update Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 8:01 ` [PATCH V3 9/9] ARM: dts: tegra: add the PM configurations of PMC Joseph Lo
2013-03-13 8:01 ` Joseph Lo
2013-03-13 17:38 ` [PATCH V3 0/9] ARM: tegra: add platform suspend support Stephen Warren
2013-03-13 17:38 ` Stephen Warren
[not found] ` <5140B996.40400-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2013-03-14 1:28 ` Joseph Lo
2013-03-14 1:28 ` Joseph Lo
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