From: Anton Vorontsov <avorontsov@ru.mvista.com>
To: David Brownell <dbrownell@users.sourceforge.net>
Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] powerpc/qe: Implement set_sync() callback for QE GPIOs
Date: Mon, 13 Jul 2009 19:19:44 +0400 [thread overview]
Message-ID: <20090713151944.GB4486@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <20090713151911.GA28114@oksana.dev.rtsoft.ru>
This is needed to set GPIO's values synchronously.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
---
arch/powerpc/include/asm/gpio.h | 11 +++++++++++
arch/powerpc/sysdev/qe_lib/gpio.c | 27 +++++++++++++++++++++++++++
2 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/gpio.h b/arch/powerpc/include/asm/gpio.h
index ea04632..899f365 100644
--- a/arch/powerpc/include/asm/gpio.h
+++ b/arch/powerpc/include/asm/gpio.h
@@ -33,6 +33,17 @@ static inline void gpio_set_value(unsigned int gpio, int value)
__gpio_set_value(gpio, value);
}
+static inline int gpio_can_set_values_sync(unsigned num, unsigned *gpios)
+{
+ return __gpio_can_set_values_sync(num, gpios);
+}
+
+static inline void gpio_set_values_sync(unsigned num, unsigned *gpios,
+ int *values)
+{
+ __gpio_set_values_sync(num, gpios, values);
+}
+
static inline int gpio_cansleep(unsigned int gpio)
{
return __gpio_cansleep(gpio);
diff --git a/arch/powerpc/sysdev/qe_lib/gpio.c b/arch/powerpc/sysdev/qe_lib/gpio.c
index 3485288..6cfe784 100644
--- a/arch/powerpc/sysdev/qe_lib/gpio.c
+++ b/arch/powerpc/sysdev/qe_lib/gpio.c
@@ -84,6 +84,32 @@ static void qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
spin_unlock_irqrestore(&qe_gc->lock, flags);
}
+static void qe_gpio_set_sync(struct gpio_chip *gc, unsigned int num,
+ unsigned int *gpios, int *vals)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct qe_gpio_chip *qe_gc = to_qe_gpio_chip(mm_gc);
+ struct qe_pio_regs __iomem *regs = mm_gc->regs;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&qe_gc->lock, flags);
+
+ for (i = 0; i < num; i++) {
+ unsigned int gpio = gpios[i] - gc->base;
+ u32 pin_mask = 1 << (QE_PIO_PINS - 1 - gpio);
+
+ if (vals[i])
+ qe_gc->cpdata |= pin_mask;
+ else
+ qe_gc->cpdata &= ~pin_mask;
+ }
+
+ out_be32(®s->cpdata, qe_gc->cpdata);
+
+ spin_unlock_irqrestore(&qe_gc->lock, flags);
+}
+
static int qe_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
{
struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
@@ -328,6 +354,7 @@ static int __init qe_add_gpiochips(void)
gc->direction_output = qe_gpio_dir_out;
gc->get = qe_gpio_get;
gc->set = qe_gpio_set;
+ gc->set_sync = qe_gpio_set_sync;
ret = of_mm_gpiochip_add(np, mm_gc);
if (ret)
--
1.6.3.3
next prev parent reply other threads:[~2009-07-13 15:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-13 15:19 [PATCH 0/2] Setting GPIOs simultaneously Anton Vorontsov
2009-07-13 15:19 ` [PATCH 1/2] gpiolib: Implement gpio_set_values_sync() Anton Vorontsov
2009-07-13 15:19 ` Anton Vorontsov [this message]
2009-07-13 16:01 ` [PATCH 0/2] Setting GPIOs simultaneously Joakim Tjernlund
2009-07-13 17:34 ` Anton Vorontsov
2009-07-13 19:59 ` Joakim Tjernlund
2009-07-13 22:20 ` Anton Vorontsov
2009-07-14 21:20 ` Ang: " Joakim Tjernlund
2009-07-14 22:09 ` Anton Vorontsov
2009-08-04 13:38 ` Joakim Tjernlund
2009-08-04 14:22 ` Anton Vorontsov
2009-08-04 14:59 ` Joakim Tjernlund
2009-08-04 15:33 ` Anton Vorontsov
[not found] ` <OFF188389D.68E638A2-ONC12575F2.00568C5B-C12575F2.0057FC95@LocalDomain>
2009-07-13 17:17 ` Joakim Tjernlund
2009-11-05 14:49 ` Kumar Gala
2009-11-05 14:58 ` Anton Vorontsov
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