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authorEric Miao <eric.y.miao@gmail.com>2010-02-04 17:13:55 -0800
committerEric Miao <eric.y.miao@gmail.com>2010-03-02 07:40:49 +0800
commitda8065ac3ea29d1bfdb5a163be346fbe35066f8d (patch)
tree5b861839c7b61cd29eb5b04f9c68d2d040f72a1e /arch/arm/common
parentefe7f8bda015b03ab1420b5bca538d18e6559863 (diff)
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[ARM] locomo: avoid unnecessary cascaded keyboard IRQ
It is not necessary and is over-complicated for IRQ_LOCOMO_KEY to be a cascaded IRQ of IRQ_LOCOMO_KEY_BASE. Removed and introduced locomokbd_{open,close} for masking/unmasking of the keyboard IRQ. Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/common')
-rw-r--r--arch/arm/common/locomo.c63
1 files changed, 6 insertions, 57 deletions
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index bd36c77..96cd073 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -143,12 +143,10 @@ static struct locomo_dev_info locomo_devices[] = {
* IRQ_LOCOMO_*_BASE and those handlers generate more interrupts
*
* hardware irq reads LOCOMO_ICR & 0x0f00
- * IRQ_LOCOMO_KEY_BASE
+ * IRQ_LOCOMO_KEY
* IRQ_LOCOMO_GPIO_BASE
* IRQ_LOCOMO_LT_BASE
* IRQ_LOCOMO_SPI_BASE
- * IRQ_LOCOMO_KEY_BASE reads LOCOMO_KIC & 0x0001
- * IRQ_LOCOMO_KEY
* IRQ_LOCOMO_GPIO_BASE reads LOCOMO_GIR & LOCOMO_GPD & 0xffff
* IRQ_LOCOMO_GPIO[0-15]
* IRQ_LOCOMO_LT_BASE reads LOCOMO_LTINT & 0x0001
@@ -160,8 +158,7 @@ static struct locomo_dev_info locomo_devices[] = {
* IRQ_LOCOMO_SPI_TEND
*/
-#define LOCOMO_IRQ_START (IRQ_LOCOMO_KEY_BASE)
-#define LOCOMO_IRQ_KEY_START (IRQ_LOCOMO_KEY)
+#define LOCOMO_IRQ_START (IRQ_LOCOMO_KEY)
#define LOCOMO_IRQ_GPIO_START (IRQ_LOCOMO_GPIO0)
#define LOCOMO_IRQ_LT_START (IRQ_LOCOMO_LT)
#define LOCOMO_IRQ_SPI_START (IRQ_LOCOMO_SPI_RFR)
@@ -218,49 +215,6 @@ static struct irq_chip locomo_chip = {
.unmask = locomo_unmask_irq,
};
-static void locomo_key_handler(unsigned int irq, struct irq_desc *desc)
-{
- void __iomem *mapbase = get_irq_chip_data(irq);
-
- if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) {
- generic_handle_irq(LOCOMO_IRQ_KEY_START);
- }
-}
-
-static void locomo_key_ack_irq(unsigned int irq)
-{
- void __iomem *mapbase = get_irq_chip_data(irq);
- unsigned int r;
- r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
- r &= ~(0x0100 << (irq - LOCOMO_IRQ_KEY_START));
- locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
-}
-
-static void locomo_key_mask_irq(unsigned int irq)
-{
- void __iomem *mapbase = get_irq_chip_data(irq);
- unsigned int r;
- r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
- r &= ~(0x0010 << (irq - LOCOMO_IRQ_KEY_START));
- locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
-}
-
-static void locomo_key_unmask_irq(unsigned int irq)
-{
- void __iomem *mapbase = get_irq_chip_data(irq);
- unsigned int r;
- r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
- r |= (0x0010 << (irq - LOCOMO_IRQ_KEY_START));
- locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC);
-}
-
-static struct irq_chip locomo_key_chip = {
- .name = "LOCOMO-key",
- .ack = locomo_key_ack_irq,
- .mask = locomo_key_mask_irq,
- .unmask = locomo_key_unmask_irq,
-};
-
static void locomo_gpio_handler(unsigned int irq, struct irq_desc *desc)
{
int req, i;
@@ -468,9 +422,10 @@ static void locomo_setup_irq(struct locomo *lchip)
set_irq_chained_handler(lchip->irq, locomo_handler);
/* Install handlers for IRQ_LOCOMO_*_BASE */
- set_irq_chip(IRQ_LOCOMO_KEY_BASE, &locomo_chip);
- set_irq_chip_data(IRQ_LOCOMO_KEY_BASE, irqbase);
- set_irq_chained_handler(IRQ_LOCOMO_KEY_BASE, locomo_key_handler);
+ set_irq_chip(IRQ_LOCOMO_KEY, &locomo_chip);
+ set_irq_chip_data(IRQ_LOCOMO_KEY, irqbase);
+ set_irq_handler(IRQ_LOCOMO_KEY, handle_edge_irq);
+ set_irq_flags(IRQ_LOCOMO_KEY, IRQF_VALID | IRQF_PROBE);
set_irq_chip(IRQ_LOCOMO_GPIO_BASE, &locomo_chip);
set_irq_chip_data(IRQ_LOCOMO_GPIO_BASE, irqbase);
@@ -484,12 +439,6 @@ static void locomo_setup_irq(struct locomo *lchip)
set_irq_chip_data(IRQ_LOCOMO_SPI_BASE, irqbase);
set_irq_chained_handler(IRQ_LOCOMO_SPI_BASE, locomo_spi_handler);
- /* install handlers for IRQ_LOCOMO_KEY_BASE generated interrupts */
- set_irq_chip(LOCOMO_IRQ_KEY_START, &locomo_key_chip);
- set_irq_chip_data(LOCOMO_IRQ_KEY_START, irqbase);
- set_irq_handler(LOCOMO_IRQ_KEY_START, handle_edge_irq);
- set_irq_flags(LOCOMO_IRQ_KEY_START, IRQF_VALID | IRQF_PROBE);
-
/* install handlers for IRQ_LOCOMO_GPIO_BASE generated interrupts */
for (irq = LOCOMO_IRQ_GPIO_START; irq < LOCOMO_IRQ_GPIO_START + 16; irq++) {
set_irq_chip(irq, &locomo_gpio_chip);