package/boot/uboot-mediatek/patches/000-mtk-05-pinctrl-mediatek-do-not-probe-gpio-driver-if-not-ena.patch

   1 From d3fbbef13853a695cdea75a980a3d6bd150a68c1 Mon Sep 17 00:00:00 2001
   2 From: Weijie Gao <weijie.gao@mediatek.com>
   3 Date: Mon, 11 Jan 2021 10:17:15 +0800
   4 Subject: [PATCH 05/21] pinctrl: mediatek: do not probe gpio driver if not
   5  enabled
   6
   7 The mtk pinctrl driver is a combination driver with support for both
   8 pinctrl and gpio. When this driver is used in SPL, gpio support may not be
   9 enabled, and this will result in a compilation error.
  10
  11 To fix this, macros are added to make sure gpio related code will only be
  12 compiled when gpio support is enabled.
  13
  14 Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
  15 ---
  16  drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 12 ++++++++----
  17  1 file changed, 8 insertions(+), 4 deletions(-)
  18
  19 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
  20 +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
  21 @@ -540,6 +540,8 @@ const struct pinctrl_ops mtk_pinctrl_ops
  22         .set_state = pinctrl_generic_set_state,
  23  };
  24
  25 +#if CONFIG_IS_ENABLED(DM_GPIO) || \
  26 +    (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
  27  static int mtk_gpio_get(struct udevice *dev, unsigned int off)
  28  {
  29         int val, err;
  30 @@ -647,12 +649,13 @@ static int mtk_gpiochip_register(struct
  31
  32         return 0;
  33  }
  34 +#endif
  35
  36  int mtk_pinctrl_common_probe(struct udevice *dev,
  37                              struct mtk_pinctrl_soc *soc)
  38  {
  39         struct mtk_pinctrl_priv *priv = dev_get_priv(dev);
  40 -       int ret;
  41 +       int ret = 0;
  42
  43         priv->base = dev_read_addr_ptr(dev);
  44         if (!priv->base)
  45 @@ -660,9 +663,10 @@ int mtk_pinctrl_common_probe(struct udev
  46
  47         priv->soc = soc;
  48
  49 +#if CONFIG_IS_ENABLED(DM_GPIO) || \
  50 +    (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
  51         ret = mtk_gpiochip_register(dev);
  52 -       if (ret)
  53 -               return ret;
  54 +#endif
  55
  56 -       return 0;
  57 +       return ret;
  58  }