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[ARM] 2836/1: Cleanup IXP4xx GPIO code

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Patch from Deepak Saxena

This patch implements the set_irq_type() hooks for configuring GPIO
IRQ type and updates all the platforms to use it instead of the
gpio_line_config() function which is now used to configure input
vs. output on the pins.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Deepak Saxena
2005-08-29 22:46:30 +01:00
committed by Russell King
parent e605ecd7c8
commit bdf82b59c5
6 changed files with 91 additions and 134 deletions
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28
arch/arm/mach-ixp4xx/gtwx5715-pci.c
View File

@@ -35,26 +35,20 @@ extern void ixp4xx_pci_preinit(void);
extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
/*
* The exact GPIO pins and IRQs are defined in arch-ixp4xx/gtwx5715.h
* Slot 0 isn't actually populated with a card connector but
* we initialize it anyway in case a future version has the
* slot populated or someone with good soldering skills has
* some free time.
*/
static void gtwx5715_init_gpio(u8 pin, u32 style)
{
gpio_line_config(pin, style | IXP4XX_GPIO_ACTIVE_LOW);
if (style & IXP4XX_GPIO_IN) gpio_line_isr_clear(pin);
}
/*
* The exact GPIO pins and IRQs are defined in arch-ixp4xx/gtwx5715.h
* Slot 0 isn't actually populated with a card connector but
* we initialize it anyway in case a future version has the
* slot populated or someone with good soldering skills has
* some free time.
*/
void __init gtwx5715_pci_preinit(void)
{
gtwx5715_init_gpio(GTWX5715_PCI_SLOT0_INTA_GPIO, IXP4XX_GPIO_IN);
gtwx5715_init_gpio(GTWX5715_PCI_SLOT1_INTA_GPIO, IXP4XX_GPIO_IN);
set_irq_type(GTWX5715_PCI_SLOT0_INTA_IRQ, IRQT_LOW);
set_irq_type(GTWX5715_PCI_SLOT0_INTB_IRQ, IRQT_LOW);
set_irq_type(GTWX5715_PCI_SLOT1_INTA_IRQ, IRQT_LOW);
set_irq_type(GTWX5715_PCI_SLOT1_INTB_IRQ, IRQT_LOW);
ixp4xx_pci_preinit();
}