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author | Eric Miao <eric.y.miao@gmail.com> | 2010-02-04 17:13:55 -0800 |
---|---|---|
committer | Eric Miao <eric.y.miao@gmail.com> | 2010-03-02 07:40:49 +0800 |
commit | da8065ac3ea29d1bfdb5a163be346fbe35066f8d (patch) | |
tree | 5b861839c7b61cd29eb5b04f9c68d2d040f72a1e /arch/arm/common | |
parent | efe7f8bda015b03ab1420b5bca538d18e6559863 (diff) | |
download | kernel_samsung_smdk4412-da8065ac3ea29d1bfdb5a163be346fbe35066f8d.zip kernel_samsung_smdk4412-da8065ac3ea29d1bfdb5a163be346fbe35066f8d.tar.gz kernel_samsung_smdk4412-da8065ac3ea29d1bfdb5a163be346fbe35066f8d.tar.bz2 |
[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.c | 63 |
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); |