git.openwrt.org Git - openwrt/staging/neocturne.git/blob

   1 From fae82621ac33e2a4a96220c56e90d1ec6237d394 Mon Sep 17 00:00:00 2001
   2 From: Sam Shih <sam.shih@mediatek.com>
   3 Date: Sun, 6 Nov 2022 09:01:12 +0100
   4 Subject: [PATCH] pinctrl: mediatek: extend pinctrl-moore to support new bias
   5  functions
   6
   7 Commit fb34a9ae383a ("pinctrl: mediatek: support rsel feature")
   8 introduced SoC specify 'pull_type' attribute to mtk_pinconf_bias_set_combo
   9 and mtk_pinconf_bias_get_combo, and make the functions able to support
  10 almost all Mediatek SoCs that use pinctrl-mtk-common-v2.c.
  11
  12 This patch enables pinctrl_moore to support these functions.
  13
  14 Signed-off-by: Sam Shih <sam.shih@mediatek.com>
  15 Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
  16 Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
  17 Link: https://lore.kernel.org/r/20221106080114.7426-6-linux@fw-web.de
  18 Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
  19 ---
  20  drivers/pinctrl/mediatek/pinctrl-moore.c | 49 ++++++++++++++++++++----
  21  1 file changed, 42 insertions(+), 7 deletions(-)
  22
  23 --- a/drivers/pinctrl/mediatek/pinctrl-moore.c
  24 +++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
  25 @@ -8,6 +8,7 @@
  26   *
  27   */
  28
  29 +#include <dt-bindings/pinctrl/mt65xx.h>
  30  #include <linux/gpio/driver.h>
  31  #include "pinctrl-moore.h"
  32
  33 @@ -105,7 +106,7 @@ static int mtk_pinconf_get(struct pinctr
  34  {
  35         struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
  36         u32 param = pinconf_to_config_param(*config);
  37 -       int val, val2, err, reg, ret = 1;
  38 +       int val, val2, err, pullup, reg, ret = 1;
  39         const struct mtk_pin_desc *desc;
  40
  41         desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
  42 @@ -114,7 +115,13 @@ static int mtk_pinconf_get(struct pinctr
  43
  44         switch (param) {
  45         case PIN_CONFIG_BIAS_DISABLE:
  46 -               if (hw->soc->bias_disable_get) {
  47 +               if (hw->soc->bias_get_combo) {
  48 +                       err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
  49 +                       if (err)
  50 +                               return err;
  51 +                       if (ret != MTK_PUPD_SET_R1R0_00 && ret != MTK_DISABLE)
  52 +                               return -EINVAL;
  53 +               } else if (hw->soc->bias_disable_get) {
  54                         err = hw->soc->bias_disable_get(hw, desc, &ret);
  55                         if (err)
  56                                 return err;
  57 @@ -123,7 +130,15 @@ static int mtk_pinconf_get(struct pinctr
  58                 }
  59                 break;
  60         case PIN_CONFIG_BIAS_PULL_UP:
  61 -               if (hw->soc->bias_get) {
  62 +               if (hw->soc->bias_get_combo) {
  63 +                       err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
  64 +                       if (err)
  65 +                               return err;
  66 +                       if (ret == MTK_PUPD_SET_R1R0_00 || ret == MTK_DISABLE)
  67 +                               return -EINVAL;
  68 +                       if (!pullup)
  69 +                               return -EINVAL;
  70 +               } else if (hw->soc->bias_get) {
  71                         err = hw->soc->bias_get(hw, desc, 1, &ret);
  72                         if (err)
  73                                 return err;
  74 @@ -132,7 +147,15 @@ static int mtk_pinconf_get(struct pinctr
  75                 }
  76                 break;
  77         case PIN_CONFIG_BIAS_PULL_DOWN:
  78 -               if (hw->soc->bias_get) {
  79 +               if (hw->soc->bias_get_combo) {
  80 +                       err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
  81 +                       if (err)
  82 +                               return err;
  83 +                       if (ret == MTK_PUPD_SET_R1R0_00 || ret == MTK_DISABLE)
  84 +                               return -EINVAL;
  85 +                       if (pullup)
  86 +                               return -EINVAL;
  87 +               } else if (hw->soc->bias_get) {
  88                         err = hw->soc->bias_get(hw, desc, 0, &ret);
  89                         if (err)
  90                                 return err;
  91 @@ -235,7 +258,11 @@ static int mtk_pinconf_set(struct pinctr
  92
  93                 switch (param) {
  94                 case PIN_CONFIG_BIAS_DISABLE:
  95 -                       if (hw->soc->bias_disable_set) {
  96 +                       if (hw->soc->bias_set_combo) {
  97 +                               err = hw->soc->bias_set_combo(hw, desc, 0, MTK_DISABLE);
  98 +                               if (err)
  99 +                                       return err;
 100 +                       } else if (hw->soc->bias_disable_set) {
 101                                 err = hw->soc->bias_disable_set(hw, desc);
 102                                 if (err)
 103                                         return err;
 104 @@ -244,7 +271,11 @@ static int mtk_pinconf_set(struct pinctr
 105                         }
 106                         break;
 107                 case PIN_CONFIG_BIAS_PULL_UP:
 108 -                       if (hw->soc->bias_set) {
 109 +                       if (hw->soc->bias_set_combo) {
 110 +                               err = hw->soc->bias_set_combo(hw, desc, 1, arg);
 111 +                               if (err)
 112 +                                       return err;
 113 +                       } else if (hw->soc->bias_set) {
 114                                 err = hw->soc->bias_set(hw, desc, 1);
 115                                 if (err)
 116                                         return err;
 117 @@ -253,7 +284,11 @@ static int mtk_pinconf_set(struct pinctr
 118                         }
 119                         break;
 120                 case PIN_CONFIG_BIAS_PULL_DOWN:
 121 -                       if (hw->soc->bias_set) {
 122 +                       if (hw->soc->bias_set_combo) {
 123 +                               err = hw->soc->bias_set_combo(hw, desc, 0, arg);
 124 +                               if (err)
 125 +                                       return err;
 126 +                       } else if (hw->soc->bias_set) {
 127                                 err = hw->soc->bias_set(hw, desc, 0);
 128                                 if (err)
 129                                         return err;