diff options
| -rw-r--r-- | drivers/pinctrl/sh-pfc/gpio.c | 39 |
1 files changed, 21 insertions, 18 deletions
diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c index 317cebb..d37efa7 100644 --- a/drivers/pinctrl/sh-pfc/gpio.c +++ b/drivers/pinctrl/sh-pfc/gpio.c @@ -101,24 +101,9 @@ static void gpio_setup_data_reg(struct sh_pfc_chip *chip, unsigned gpio) static int gpio_setup_data_regs(struct sh_pfc_chip *chip) { struct sh_pfc *pfc = chip->pfc; - unsigned long addr = pfc->info->data_regs[0].reg; const struct pinmux_data_reg *dreg; unsigned int i; - /* Find the window that contain the GPIO registers. */ - for (i = 0; i < pfc->num_windows; ++i) { - struct sh_pfc_window *window = &pfc->window[i]; - - if (addr >= window->phys && addr < window->phys + window->size) - break; - } - - if (i == pfc->num_windows) - return -EINVAL; - - /* GPIO data registers must be in the first memory resource. */ - chip->mem = &pfc->window[i]; - /* Count the number of data registers, allocate memory and initialize * them. */ @@ -319,7 +304,8 @@ static int gpio_function_setup(struct sh_pfc_chip *chip) */ static struct sh_pfc_chip * -sh_pfc_add_gpiochip(struct sh_pfc *pfc, int(*setup)(struct sh_pfc_chip *)) +sh_pfc_add_gpiochip(struct sh_pfc *pfc, int(*setup)(struct sh_pfc_chip *), + struct sh_pfc_window *mem) { struct sh_pfc_chip *chip; int ret; @@ -328,6 +314,7 @@ sh_pfc_add_gpiochip(struct sh_pfc *pfc, int(*setup)(struct sh_pfc_chip *)) if (unlikely(!chip)) return ERR_PTR(-ENOMEM); + chip->mem = mem; chip->pfc = pfc; ret = setup(chip); @@ -357,8 +344,24 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc) if (pfc->info->data_regs == NULL) return 0; + /* Find the memory window that contain the GPIO registers. Boards that + * register a separate GPIO device will not supply a memory resource + * that covers the data registers. In that case don't try to handle + * GPIOs. + */ + for (i = 0; i < pfc->num_windows; ++i) { + struct sh_pfc_window *window = &pfc->window[i]; + + if (pfc->info->data_regs[0].reg >= window->phys && + pfc->info->data_regs[0].reg < window->phys + window->size) + break; + } + + if (i == pfc->num_windows) + return 0; + /* Register the real GPIOs chip. */ - chip = sh_pfc_add_gpiochip(pfc, gpio_pin_setup); + chip = sh_pfc_add_gpiochip(pfc, gpio_pin_setup, &pfc->window[i]); if (IS_ERR(chip)) return PTR_ERR(chip); @@ -390,7 +393,7 @@ int sh_pfc_register_gpiochip(struct sh_pfc *pfc) if (pfc->info->nr_func_gpios == 0) return 0; - chip = sh_pfc_add_gpiochip(pfc, gpio_function_setup); + chip = sh_pfc_add_gpiochip(pfc, gpio_function_setup, NULL); if (IS_ERR(chip)) return PTR_ERR(chip); |
