target/linux/lantiq/patches-3.7/0108-PINCTRL-lantiq-fixes.patch

   1 From 13e754b5fff5be1930e2b8fe534a52b608c9e479 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Mon, 3 Dec 2012 19:27:28 +0100
   4 Subject: [PATCH] PINCTRL: lantiq: fixes
   5
   6 ---
   7  drivers/pinctrl/pinctrl-lantiq.c |   54 ++++++++++++++++++-----------
   8  drivers/pinctrl/pinctrl-lantiq.h |    1 +
   9  drivers/pinctrl/pinctrl-xway.c   |   70 ++++++++++++++++++++++++++++++++++----
  10  3 files changed, 99 insertions(+), 26 deletions(-)
  11
  12 Index: linux-3.7-rc8/drivers/pinctrl/pinctrl-lantiq.c
  13 ===================================================================
  14 --- linux-3.7-rc8.orig/drivers/pinctrl/pinctrl-lantiq.c 2012-12-03 20:22:37.000000000 +0100
  15 +++ linux-3.7-rc8/drivers/pinctrl/pinctrl-lantiq.c      2012-12-14 22:59:40.687563565 +0100
  16 @@ -64,11 +64,13 @@
  17         seq_printf(s, " %s", dev_name(pctldev->dev));
  18  }
  19
  20 -static int ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
  21 +static void ltq_pinctrl_dt_subnode_to_map(struct pinctrl_dev *pctldev,
  22                                 struct device_node *np,
  23                                 struct pinctrl_map **map)
  24  {
  25         struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
  26 +       struct property *pins = of_find_property(np, "lantiq,pins", NULL);
  27 +       struct property *groups = of_find_property(np, "lantiq,groups", NULL);
  28         unsigned long configs[3];
  29         unsigned num_configs = 0;
  30         struct property *prop;
  31 @@ -76,8 +78,20 @@
  32         const char *function;
  33         int ret, i;
  34
  35 +       if (!pins && !groups) {
  36 +               dev_err(pctldev->dev, "%s defines neither pins nor groups\n",
  37 +                       np->name);
  38 +               return;
  39 +       }
  40 +
  41 +       if (pins && groups) {
  42 +               dev_err(pctldev->dev, "%s defines both pins and groups\n",
  43 +                       np->name);
  44 +               return;
  45 +       }
  46 +
  47         ret = of_property_read_string(np, "lantiq,function", &function);
  48 -       if (!ret) {
  49 +       if (groups && !ret) {
  50                 of_property_for_each_string(np, "lantiq,groups", prop, group) {
  51                         (*map)->type = PIN_MAP_TYPE_MUX_GROUP;
  52                         (*map)->name = function;
  53 @@ -85,11 +99,6 @@
  54                         (*map)->data.mux.function = function;
  55                         (*map)++;
  56                 }
  57 -               if (of_find_property(np, "lantiq,pins", NULL))
  58 -                       dev_err(pctldev->dev,
  59 -                               "%s mixes pins and groups settings\n",
  60 -                               np->name);
  61 -               return 0;
  62         }
  63
  64         for (i = 0; i < info->num_params; i++) {
  65 @@ -103,7 +112,7 @@
  66         }
  67
  68         if (!num_configs)
  69 -               return -EINVAL;
  70 +               return;
  71
  72         of_property_for_each_string(np, "lantiq,pins", prop, pin) {
  73                 (*map)->data.configs.configs = kmemdup(configs,
  74 @@ -115,7 +124,16 @@
  75                 (*map)->data.configs.num_configs = num_configs;
  76                 (*map)++;
  77         }
  78 -       return 0;
  79 +       of_property_for_each_string(np, "lantiq,groups", prop, group) {
  80 +               (*map)->data.configs.configs = kmemdup(configs,
  81 +                                       num_configs * sizeof(unsigned long),
  82 +                                       GFP_KERNEL);
  83 +               (*map)->type = PIN_MAP_TYPE_CONFIGS_GROUP;
  84 +               (*map)->name = group;
  85 +               (*map)->data.configs.group_or_pin = group;
  86 +               (*map)->data.configs.num_configs = num_configs;
  87 +               (*map)++;
  88 +       }
  89  }
  90
  91  static int ltq_pinctrl_dt_subnode_size(struct device_node *np)
  92 @@ -135,23 +153,19 @@
  93  {
  94         struct pinctrl_map *tmp;
  95         struct device_node *np;
  96 -       int ret;
  97 +       int max_maps = 0;
  98
  99 -       *num_maps = 0;
 100         for_each_child_of_node(np_config, np)
 101 -               *num_maps += ltq_pinctrl_dt_subnode_size(np);
 102 -       *map = kzalloc(*num_maps * sizeof(struct pinctrl_map), GFP_KERNEL);
 103 +               max_maps += ltq_pinctrl_dt_subnode_size(np);
 104 +       *map = kzalloc(max_maps * sizeof(struct pinctrl_map) * 2, GFP_KERNEL);
 105         if (!*map)
 106                 return -ENOMEM;
 107         tmp = *map;
 108
 109 -       for_each_child_of_node(np_config, np) {
 110 -               ret = ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
 111 -               if (ret < 0) {
 112 -                       ltq_pinctrl_dt_free_map(pctldev, *map, *num_maps);
 113 -                       return ret;
 114 -               }
 115 -       }
 116 +       for_each_child_of_node(np_config, np)
 117 +               ltq_pinctrl_dt_subnode_to_map(pctldev, np, &tmp);
 118 +       *num_maps = ((int)(tmp - *map));
 119 +
 120         return 0;
 121  }
 122
 123 Index: linux-3.7-rc8/drivers/pinctrl/pinctrl-lantiq.h
 124 ===================================================================
 125 --- linux-3.7-rc8.orig/drivers/pinctrl/pinctrl-lantiq.h 2012-12-03 20:22:37.000000000 +0100
 126 +++ linux-3.7-rc8/drivers/pinctrl/pinctrl-lantiq.h      2012-12-14 22:55:26.591557194 +0100
 127 @@ -34,6 +34,7 @@
 128         LTQ_PINCONF_PARAM_OPEN_DRAIN,
 129         LTQ_PINCONF_PARAM_DRIVE_CURRENT,
 130         LTQ_PINCONF_PARAM_SLEW_RATE,
 131 +       LTQ_PINCONF_PARAM_OUTPUT,
 132  };
 133
 134  struct ltq_cfg_param {
 135 Index: linux-3.7-rc8/drivers/pinctrl/pinctrl-xway.c
 136 ===================================================================
 137 --- linux-3.7-rc8.orig/drivers/pinctrl/pinctrl-xway.c   2012-12-14 22:55:26.567557195 +0100
 138 +++ linux-3.7-rc8/drivers/pinctrl/pinctrl-xway.c        2012-12-14 22:55:26.595557195 +0100
 139 @@ -443,7 +443,7 @@
 140                 else
 141                         reg = GPIO_OD(pin);
 142                 *config = LTQ_PINCONF_PACK(param,
 143 -                       !!gpio_getbit(info->membase[0], reg, PORT_PIN(pin)));
 144 +                       !gpio_getbit(info->membase[0], reg, PORT_PIN(pin)));
 145                 break;
 146
 147         case LTQ_PINCONF_PARAM_PULL:
 148 @@ -466,6 +466,11 @@
 149                         *config = LTQ_PINCONF_PACK(param, 1);
 150                 break;
 151
 152 +       case LTQ_PINCONF_PARAM_OUTPUT:
 153 +               reg = GPIO_DIR(pin);
 154 +               *config = LTQ_PINCONF_PACK(param,
 155 +                       gpio_getbit(info->membase[0], reg, PORT_PIN(pin)));
 156 +               break;
 157         default:
 158                 dev_err(pctldev->dev, "Invalid config param %04x\n", param);
 159                 return -ENOTSUPP;
 160 @@ -489,7 +494,10 @@
 161                         reg = GPIO3_OD;
 162                 else
 163                         reg = GPIO_OD(pin);
 164 -               gpio_setbit(info->membase[0], reg, PORT_PIN(pin));
 165 +               if (arg == 0)
 166 +                       gpio_setbit(info->membase[0], reg, PORT_PIN(pin));
 167 +               else
 168 +                       gpio_clearbit(info->membase[0], reg, PORT_PIN(pin));
 169                 break;
 170
 171         case LTQ_PINCONF_PARAM_PULL:
 172 @@ -515,6 +523,14 @@
 173                         dev_err(pctldev->dev, "Invalid pull value %d\n", arg);
 174                 break;
 175
 176 +       case LTQ_PINCONF_PARAM_OUTPUT:
 177 +               reg = GPIO_DIR(pin);
 178 +               if (arg == 0)
 179 +                       gpio_clearbit(info->membase[0], reg, PORT_PIN(pin));
 180 +               else
 181 +                       gpio_setbit(info->membase[0], reg, PORT_PIN(pin));
 182 +               break;
 183 +
 184         default:
 185                 dev_err(pctldev->dev, "Invalid config param %04x\n", param);
 186                 return -ENOTSUPP;
 187 @@ -522,9 +538,25 @@
 188         return 0;
 189  }
 190
 191 +int xway_pinconf_group_set(struct pinctrl_dev *pctldev,
 192 +                       unsigned selector,
 193 +                       unsigned long config)
 194 +{
 195 +       struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctldev);
 196 +       int i, ret = 0;
 197 +
 198 +       for (i = 0; i < info->grps[selector].npins && !ret; i++)
 199 +               ret = xway_pinconf_set(pctldev,
 200 +                                       info->grps[selector].pins[i], config);
 201 +
 202 +       return ret;
 203 +}
 204 +
 205 +
 206  struct pinconf_ops xway_pinconf_ops = {
 207         .pin_config_get = xway_pinconf_get,
 208         .pin_config_set = xway_pinconf_set,
 209 +       .pin_config_group_set = xway_pinconf_group_set,
 210  };
 211
 212  static struct pinctrl_desc xway_pctrl_desc = {
 213 @@ -532,10 +564,9 @@
 214         .confops        = &xway_pinconf_ops,
 215  };
 216
 217 -static inline int xway_mux_apply(struct pinctrl_dev *pctrldev,
 218 +static int mux_apply(struct ltq_pinmux_info *info,
 219                                 int pin, int mux)
 220  {
 221 -       struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 222         int port = PORT(pin);
 223         u32 alt1_reg = GPIO_ALT1(pin);
 224
 225 @@ -555,9 +586,18 @@
 226         return 0;
 227  }
 228
 229 +static inline int xway_mux_apply(struct pinctrl_dev *pctrldev,
 230 +                               int pin, int mux)
 231 +{
 232 +       struct ltq_pinmux_info *info = pinctrl_dev_get_drvdata(pctrldev);
 233 +
 234 +       return mux_apply(info, pin, mux);
 235 +}
 236 +
 237  static const struct ltq_cfg_param xway_cfg_params[] = {
 238         {"lantiq,pull",         LTQ_PINCONF_PARAM_PULL},
 239         {"lantiq,open-drain",   LTQ_PINCONF_PARAM_OPEN_DRAIN},
 240 +       {"lantiq,output",       LTQ_PINCONF_PARAM_OUTPUT},
 241  };
 242
 243  static struct ltq_pinmux_info xway_info = {
 244 @@ -598,6 +638,10 @@
 245  {
 246         struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
 247
 248 +       if (PORT(pin) == PORT3)
 249 +               gpio_setbit(info->membase[0], GPIO3_OD, PORT_PIN(pin));
 250 +       else
 251 +               gpio_setbit(info->membase[0], GPIO_OD(pin), PORT_PIN(pin));
 252         gpio_setbit(info->membase[0], GPIO_DIR(pin), PORT_PIN(pin));
 253         xway_gpio_set(chip, pin, val);
 254
 255 @@ -618,6 +662,18 @@
 256         pinctrl_free_gpio(gpio);
 257  }
 258
 259 +static int xway_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
 260 +{
 261 +       struct ltq_pinmux_info *info = dev_get_drvdata(chip->dev);
 262 +       int i;
 263 +
 264 +       for (i = 0; i < info->num_exin; i++)
 265 +               if (info->exin[i] == offset)
 266 +                       return ltq_eiu_get_irq(i);
 267 +
 268 +       return -1;
 269 +}
 270 +
 271  static struct gpio_chip xway_chip = {
 272         .label = "gpio-xway",
 273         .direction_input = xway_gpio_dir_in,
 274 @@ -626,6 +682,7 @@
 275         .set = xway_gpio_set,
 276         .request = xway_gpio_req,
 277         .free = xway_gpio_free,
 278 +       .to_irq = xway_gpio_to_irq,
 279         .base = -1,
 280  };
 281