target/linux/lantiq/patches-3.9/0022-PINCTRL-add-gpio_irq-support.patch

   1 From ea78e25b769740a801e259f4f6cb93fa92faa244 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Sat, 29 Jun 2013 19:32:08 +0200
   4 Subject: [PATCH 22/22] PINCTRL: add gpio_irq support
   5
   6 ---
   7  drivers/pinctrl/pinctrl-xway.c |   28 ++++++++++++++++++++++++++--
   8  1 file changed, 26 insertions(+), 2 deletions(-)
   9
  10 --- a/drivers/pinctrl/pinctrl-xway.c
  11 +++ b/drivers/pinctrl/pinctrl-xway.c
  12 @@ -564,10 +564,9 @@ static struct pinctrl_desc xway_pctrl_de
  13         .confops        = &xway_pinconf_ops,
  14  };
  15
  16 -static inline int xway_mux_apply(struct pinctrl_dev *pctrldev,
  17 +static int mux_apply(struct ltq_pinmux_info *info,
  18                                 int pin, int mux)
  19  {
  20 -       struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
  21         int port = PORT(pin);
  22         u32 alt1_reg = GPIO_ALT1(pin);
  23
  24 @@ -587,6 +586,14 @@ static inline int xway_mux_apply(struct
  25         return 0;
  26  }
  27
  28 +static inline int xway_mux_apply(struct pinctrl_dev *pctrldev,
  29 +                               int pin, int mux)
  30 +{
  31 +       struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
  32 +
  33 +       return mux_apply(info, pin, mux);
  34 +}
  35 +
  36  static const struct ltq_cfg_param xway_cfg_params[] = {
  37         {"lantiq,pull",         LTQ_PINCONF_PARAM_PULL},
  38         {"lantiq,open-drain",   LTQ_PINCONF_PARAM_OPEN_DRAIN},
  39 @@ -631,6 +638,10 @@ static int xway_gpio_dir_out(struct gpio
  40  {
  41         struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
  42
  43 +       if (PORT(pin) == PORT3)
  44 +               gpio_setbit(info->membase[0], GPIO3_OD, PORT_PIN(pin));
  45 +       else
  46 +               gpio_setbit(info->membase[0], GPIO_OD(pin), PORT_PIN(pin));
  47         gpio_setbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin));
  48         xway_gpio_set(chip, pin, val);
  49
  50 @@ -651,6 +662,18 @@ static void xway_gpio_free(struct gpio_c
  51         pinctrl_free_gpio(gpio);
  52  }
  53
  54 +static int xway_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
  55 +{
  56 +       struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
  57 +       int i;
  58 +
  59 +       for (i = 0; i < info->num_exin; i++)
  60 +               if (info->exin[i] == offset)
  61 +                       return ltq_eiu_get_irq(i);
  62 +
  63 +       return -1;
  64 +}
  65 +
  66  static struct gpio_chip xway_chip = {
  67         .label = "gpio-xway",
  68         .direction_input = xway_gpio_dir_in,
  69 @@ -659,6 +682,7 @@ static struct gpio_chip xway_chip = {
  70         .set = xway_gpio_set,
  71         .request = xway_gpio_req,
  72         .free = xway_gpio_free,
  73 +       .to_irq = xway_gpio_to_irq,
  74         .base = -1,
  75  };
  76