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path: root/drivers/gpio/gpio-generic.c
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Diffstat (limited to 'drivers/gpio/gpio-generic.c')
-rw-r--r--drivers/gpio/gpio-generic.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-generic.c b/drivers/gpio/gpio-generic.c
index e38dd0c31973..82e2e4fe599e 100644
--- a/drivers/gpio/gpio-generic.c
+++ b/drivers/gpio/gpio-generic.c
@@ -364,7 +364,7 @@ EXPORT_SYMBOL_GPL(bgpio_remove);
int bgpio_init(struct bgpio_chip *bgc, struct device *dev,
unsigned long sz, void __iomem *dat, void __iomem *set,
void __iomem *clr, void __iomem *dirout, void __iomem *dirin,
- bool big_endian)
+ unsigned long flags)
{
int ret;
@@ -385,7 +385,7 @@ int bgpio_init(struct bgpio_chip *bgc, struct device *dev,
if (ret)
return ret;
- ret = bgpio_setup_accessors(dev, bgc, big_endian);
+ ret = bgpio_setup_accessors(dev, bgc, flags & BGPIOF_BIG_ENDIAN);
if (ret)
return ret;
@@ -394,6 +394,11 @@ int bgpio_init(struct bgpio_chip *bgc, struct device *dev,
return ret;
bgc->data = bgc->read_reg(bgc->reg_dat);
+ if (bgc->gc.set == bgpio_set_set &&
+ !(flags & BGPIOF_UNREADABLE_REG_SET))
+ bgc->data = bgc->read_reg(bgc->reg_set);
+ if (bgc->reg_dir && !(flags & BGPIOF_UNREADABLE_REG_DIR))
+ bgc->dir = bgc->read_reg(bgc->reg_dir);
return ret;
}
@@ -449,7 +454,7 @@ static int __devinit bgpio_pdev_probe(struct platform_device *pdev)
void __iomem *dirout;
void __iomem *dirin;
unsigned long sz;
- bool be;
+ unsigned long flags = 0;
int err;
struct bgpio_chip *bgc;
struct bgpio_pdata *pdata = dev_get_platdata(dev);
@@ -480,13 +485,14 @@ static int __devinit bgpio_pdev_probe(struct platform_device *pdev)
if (err)
return err;
- be = !strcmp(platform_get_device_id(pdev)->name, "basic-mmio-gpio-be");
+ if (!strcmp(platform_get_device_id(pdev)->name, "basic-mmio-gpio-be"))
+ flags |= BGPIOF_BIG_ENDIAN;
bgc = devm_kzalloc(&pdev->dev, sizeof(*bgc), GFP_KERNEL);
if (!bgc)
return -ENOMEM;
- err = bgpio_init(bgc, dev, sz, dat, set, clr, dirout, dirin, be);
+ err = bgpio_init(bgc, dev, sz, dat, set, clr, dirout, dirin, flags);
if (err)
return err;