leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ARM: pxa: fix gpio wakeup setting

Browse Source 
In 3.3, gpio wakeup setting was broken. The call
enable_irq_wake() didn't set up the PXA gpio registers
(PWER, ...) anymore.

Fix it at least for pxa27x. The driver doesn't seem to be
used in pxa25x (weird ...), and the fix doesn't extend to
pxa3xx and pxa95x (which don't have a gpio_set_wake()
available).

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
This commit is contained in:
Robert Jarzmik 2012-04-22 13:37:24 +02:00 committed by Haojian Zhuang
parent 66f75a5d02
commit b95ace54a2
3 changed files with 28 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm/mach-pxa/pxa27x.c
View File

@ -421,8 +421,11 @@ void __init pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info)
pxa_register_device(&pxa27x_device_i2c_power, info);
}
static struct pxa_gpio_platform_data pxa27x_gpio_info __initdata = {
.gpio_set_wake = gpio_set_wake,
};
static struct platform_device *devices[] __initdata = {
&pxa_device_gpio,
&pxa27x_device_udc,
&pxa_device_pmu,
&pxa_device_i2s,
@ -458,6 +461,7 @@ static int __init pxa27x_init(void)
register_syscore_ops(&pxa2xx_mfp_syscore_ops);
register_syscore_ops(&pxa2xx_clock_syscore_ops);
pxa_register_device(&pxa_device_gpio, &pxa27x_gpio_info);
ret = platform_add_devices(devices, ARRAY_SIZE(devices));
}

21
drivers/gpio/gpio-pxa.c
View File

@ -64,6 +64,7 @@ struct pxa_gpio_chip {
unsigned long irq_mask;
unsigned long irq_edge_rise;
unsigned long irq_edge_fall;
int (*set_wake)(unsigned int gpio, unsigned int on);
#ifdef CONFIG_PM
unsigned long saved_gplr;
@ -269,7 +270,8 @@ static void pxa_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
(value ? GPSR_OFFSET : GPCR_OFFSET));
}
static int __devinit pxa_init_gpio_chip(int gpio_end)
static int __devinit pxa_init_gpio_chip(int gpio_end,
int (*set_wake)(unsigned int, unsigned int))
{
int i, gpio, nbanks = gpio_to_bank(gpio_end) + 1;
struct pxa_gpio_chip *chips;
@ -285,6 +287,7 @@ static int __devinit pxa_init_gpio_chip(int gpio_end)
sprintf(chips[i].label, "gpio-%d", i);
chips[i].regbase = gpio_reg_base + BANK_OFF(i);
chips[i].set_wake = set_wake;
c->base = gpio;
c->label = chips[i].label;
@ -412,6 +415,17 @@ static void pxa_mask_muxed_gpio(struct irq_data *d)
writel_relaxed(gfer, c->regbase + GFER_OFFSET);
}
static int pxa_gpio_set_wake(struct irq_data *d, unsigned int on)
{
int gpio = pxa_irq_to_gpio(d->irq);
struct pxa_gpio_chip *c = gpio_to_pxachip(gpio);
if (c->set_wake)
return c->set_wake(gpio, on);
else
return 0;
}
static void pxa_unmask_muxed_gpio(struct irq_data *d)
{
int gpio = pxa_irq_to_gpio(d->irq);
@ -427,6 +441,7 @@ static struct irq_chip pxa_muxed_gpio_chip = {
.irq_mask = pxa_mask_muxed_gpio,
.irq_unmask = pxa_unmask_muxed_gpio,
.irq_set_type = pxa_gpio_irq_type,
.irq_set_wake = pxa_gpio_set_wake,
};
static int pxa_gpio_nums(void)
@ -471,6 +486,7 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
struct pxa_gpio_chip *c;
struct resource *res;
struct clk *clk;
struct pxa_gpio_platform_data *info;
int gpio, irq, ret;
int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
@ -516,7 +532,8 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
}
/* Initialize GPIO chips */
pxa_init_gpio_chip(pxa_last_gpio);
info = dev_get_platdata(&pdev->dev);
pxa_init_gpio_chip(pxa_last_gpio, info ? info->gpio_set_wake : NULL);
/* clear all GPIO edge detects */
for_each_gpio_chip(gpio, c) {

4
include/linux/gpio-pxa.h
View File

@ -13,4 +13,8 @@ extern int pxa_last_gpio;
extern int pxa_irq_to_gpio(int irq);
struct pxa_gpio_platform_data {
int (*gpio_set_wake)(unsigned int gpio, unsigned int on);
};
#endif /* __GPIO_PXA_H */