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pinctrl: sirf: replace of_gpio_simple_xlate by sirf specific of_xlate 

the default of_gpio_simple_xlate() will make us fail while getting gpios
bigger than 32 by of_get_named_gpio() or related APIs.
this patch adds a specific of_xlate callback for sirf gpio_chip and fix
the problem.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Barry Song 2013-02-04 17:53:34 +08:00 committed by Linus Walleij
parent a1ed26703e
commit 228f1ce9b8
1 changed files with 18 additions and 0 deletions
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18
drivers/pinctrl/pinctrl-sirf.c
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@ -1246,6 +1246,22 @@ static void __iomem *sirfsoc_rsc_of_iomap(void)
return of_iomap(np, 0);
}
static int sirfsoc_gpio_of_xlate(struct gpio_chip *gc,
const struct of_phandle_args *gpiospec,
u32 *flags)
{
if (gpiospec->args[0] > SIRFSOC_GPIO_NO_OF_BANKS * SIRFSOC_GPIO_BANK_SIZE)
return -EINVAL;
if (gc != &sgpio_bank[gpiospec->args[0] / SIRFSOC_GPIO_BANK_SIZE].chip.gc)
return -EINVAL;
if (flags)
*flags = gpiospec->args[1];
return gpiospec->args[0] % SIRFSOC_GPIO_BANK_SIZE;
}
static int sirfsoc_pinmux_probe(struct platform_device *pdev)
{
int ret;
@ -1736,6 +1752,8 @@ static int sirfsoc_gpio_probe(struct device_node *np)
bank->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE;
bank->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL);
bank->chip.gc.of_node = np;
bank->chip.gc.of_xlate = sirfsoc_gpio_of_xlate;
bank->chip.gc.of_gpio_n_cells = 2;
bank->chip.regs = regs;
bank->id = i;
bank->is_marco = is_marco;