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authorRichard Purdie <rpurdie@rpsys.net>2006-09-25 20:11:48 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2006-09-27 20:58:59 +0100
commit8d48427ecb0639593ccf14e807479b7873254ccb (patch)
tree7bcc5f49faf33515d5d65fae53d6670cfe76e5c3 /arch/arm/common/locomo.c
parent2dc94310bd94d0906febea7d0f7c188da620c952 (diff)
[ARM] 3847/2: Convert LOMOMO to use struct device for GPIOs
Convert LOMOMO to use struct device * for GPIOs instead of struct locomo_dev. This enables access to the GPIOs from code which is not a locomo device itself (such as audio). Access for gpio 31 is removed for error handling (no such hardware exists). Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/common/locomo.c')
-rw-r--r--arch/arm/common/locomo.c32
1 files changed, 22 insertions, 10 deletions
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 4e0dcaef6eb..c46dc65ec79 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -814,12 +814,15 @@ static inline struct locomo *locomo_chip_driver(struct locomo_dev *ldev)
return (struct locomo *)dev_get_drvdata(ldev->dev.parent);
}
-void locomo_gpio_set_dir(struct locomo_dev *ldev, unsigned int bits, unsigned int dir)
+void locomo_gpio_set_dir(struct device *dev, unsigned int bits, unsigned int dir)
{
- struct locomo *lchip = locomo_chip_driver(ldev);
+ struct locomo *lchip = dev_get_drvdata(dev);
unsigned long flags;
unsigned int r;
+ if (!lchip)
+ return;
+
spin_lock_irqsave(&lchip->lock, flags);
r = locomo_readl(lchip->base + LOCOMO_GPD);
@@ -836,12 +839,15 @@ void locomo_gpio_set_dir(struct locomo_dev *ldev, unsigned int bits, unsigned in
spin_unlock_irqrestore(&lchip->lock, flags);
}
-unsigned int locomo_gpio_read_level(struct locomo_dev *ldev, unsigned int bits)
+int locomo_gpio_read_level(struct device *dev, unsigned int bits)
{
- struct locomo *lchip = locomo_chip_driver(ldev);
+ struct locomo *lchip = dev_get_drvdata(dev);
unsigned long flags;
unsigned int ret;
+ if (!lchip)
+ return -ENODEV;
+
spin_lock_irqsave(&lchip->lock, flags);
ret = locomo_readl(lchip->base + LOCOMO_GPL);
spin_unlock_irqrestore(&lchip->lock, flags);
@@ -850,12 +856,15 @@ unsigned int locomo_gpio_read_level(struct locomo_dev *ldev, unsigned int bits)
return ret;
}
-unsigned int locomo_gpio_read_output(struct locomo_dev *ldev, unsigned int bits)
+int locomo_gpio_read_output(struct device *dev, unsigned int bits)
{
- struct locomo *lchip = locomo_chip_driver(ldev);
+ struct locomo *lchip = dev_get_drvdata(dev);
unsigned long flags;
unsigned int ret;
+ if (!lchip)
+ return -ENODEV;
+
spin_lock_irqsave(&lchip->lock, flags);
ret = locomo_readl(lchip->base + LOCOMO_GPO);
spin_unlock_irqrestore(&lchip->lock, flags);
@@ -864,12 +873,15 @@ unsigned int locomo_gpio_read_output(struct locomo_dev *ldev, unsigned int bits)
return ret;
}
-void locomo_gpio_write(struct locomo_dev *ldev, unsigned int bits, unsigned int set)
+void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set)
{
- struct locomo *lchip = locomo_chip_driver(ldev);
+ struct locomo *lchip = dev_get_drvdata(dev);
unsigned long flags;
unsigned int r;
+ if (!lchip)
+ return;
+
spin_lock_irqsave(&lchip->lock, flags);
r = locomo_readl(lchip->base + LOCOMO_GPO);
@@ -1058,9 +1070,9 @@ void locomo_frontlight_set(struct locomo_dev *dev, int duty, int vr, int bpwf)
struct locomo *lchip = locomo_chip_driver(dev);
if (vr)
- locomo_gpio_write(dev, LOCOMO_GPIO_FL_VR, 1);
+ locomo_gpio_write(dev->dev.parent, LOCOMO_GPIO_FL_VR, 1);
else
- locomo_gpio_write(dev, LOCOMO_GPIO_FL_VR, 0);
+ locomo_gpio_write(dev->dev.parent, LOCOMO_GPIO_FL_VR, 0);
spin_lock_irqsave(&lchip->lock, flags);
locomo_writel(bpwf, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS);