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authorMichael Hennerich <michael.hennerich@analog.com>2008-02-02 16:17:52 +0800
committerBryan Wu <bryan.wu@analog.com>2008-02-02 16:17:52 +0800
commitf1bceb47b3f385d765acac7fe582cb11034dd759 (patch)
tree90f5cb1400acd3913830e98dc04ed96191384eb9 /arch/blackfin
parenta8c12385c203ca7fa1cd5af25f910c41f6e4a2b5 (diff)
[Blackfin] arch:Fix BUG [#3876] pfbutton test for BTN3 on bf533 don't show complete info
- Buttons on the BF533-STAMP board are not inverted - Fix spurious GPIO Interrupt caused during set irq_type for edge triggered interrupts Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/mach-bf533/boards/stamp.c6
-rw-r--r--arch/blackfin/mach-common/ints-priority.c22
2 files changed, 16 insertions, 12 deletions
diff --git a/arch/blackfin/mach-bf533/boards/stamp.c b/arch/blackfin/mach-bf533/boards/stamp.c
index 0185350feac..41ec72f8a08 100644
--- a/arch/blackfin/mach-bf533/boards/stamp.c
+++ b/arch/blackfin/mach-bf533/boards/stamp.c
@@ -423,9 +423,9 @@ static struct platform_device bfin_pata_device = {
#include <linux/gpio_keys.h>
static struct gpio_keys_button bfin_gpio_keys_table[] = {
- {BTN_0, GPIO_PF5, 1, "gpio-keys: BTN0"},
- {BTN_1, GPIO_PF6, 1, "gpio-keys: BTN1"},
- {BTN_2, GPIO_PF8, 1, "gpio-keys: BTN2"},
+ {BTN_0, GPIO_PF5, 0, "gpio-keys: BTN0"},
+ {BTN_1, GPIO_PF6, 0, "gpio-keys: BTN1"},
+ {BTN_2, GPIO_PF8, 0, "gpio-keys: BTN2"},
};
static struct gpio_keys_platform_data bfin_gpio_keys_data = {
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c
index 81d00183ae9..880595afe98 100644
--- a/arch/blackfin/mach-common/ints-priority.c
+++ b/arch/blackfin/mach-common/ints-priority.c
@@ -430,16 +430,8 @@ static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
return 0;
}
+ set_gpio_inen(gpionr, 0);
set_gpio_dir(gpionr, 0);
- set_gpio_inen(gpionr, 1);
-
- if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
- gpio_edge_triggered[gpio_bank(gpionr)] |= gpio_bit(gpionr);
- set_gpio_edge(gpionr, 1);
- } else {
- set_gpio_edge(gpionr, 0);
- gpio_edge_triggered[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
- }
if ((type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
== (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
@@ -452,6 +444,18 @@ static int bfin_gpio_irq_type(unsigned int irq, unsigned int type)
else
set_gpio_polar(gpionr, 0); /* high or rising edge denoted by zero */
+ if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING)) {
+ set_gpio_edge(gpionr, 1);
+ set_gpio_inen(gpionr, 1);
+ gpio_edge_triggered[gpio_bank(gpionr)] |= gpio_bit(gpionr);
+ set_gpio_data(gpionr, 0);
+
+ } else {
+ set_gpio_edge(gpionr, 0);
+ gpio_edge_triggered[gpio_bank(gpionr)] &= ~gpio_bit(gpionr);
+ set_gpio_inen(gpionr, 1);
+ }
+
SSYNC();
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))