4 files changed, 201 insertions, 3 deletions

diff --git a/include/dt-bindings/gpio/meson8-gpio.h b/include/dt-bindings/gpio/meson8-gpio.h
new file mode 100644
index 000000000000..fdaeb5cbf5e1
--- /dev/null
+++ b/include/dt-bindings/gpio/meson8-gpio.h
@@ -0,0 +1,157 @@
+/*
+ * GPIO definitions for Amlogic Meson8 SoCs
+ *
+ * Copyright (C) 2014 Beniamino Galvani <b.galvani@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _DT_BINDINGS_MESON8_GPIO_H
+#define _DT_BINDINGS_MESON8_GPIO_H
+
+/* First GPIO chip */
+#define GPIOX_0         0
+#define GPIOX_1         1
+#define GPIOX_2         2
+#define GPIOX_3         3
+#define GPIOX_4         4
+#define GPIOX_5         5
+#define GPIOX_6         6
+#define GPIOX_7         7
+#define GPIOX_8         8
+#define GPIOX_9         9
+#define GPIOX_10        10
+#define GPIOX_11        11
+#define GPIOX_12        12
+#define GPIOX_13        13
+#define GPIOX_14        14
+#define GPIOX_15        15
+#define GPIOX_16        16
+#define GPIOX_17        17
+#define GPIOX_18        18
+#define GPIOX_19        19
+#define GPIOX_20        20
+#define GPIOX_21        21
+#define GPIOY_0         22
+#define GPIOY_1         23
+#define GPIOY_2         24
+#define GPIOY_3         25
+#define GPIOY_4         26
+#define GPIOY_5         27
+#define GPIOY_6         28
+#define GPIOY_7         29
+#define GPIOY_8         30
+#define GPIOY_9         31
+#define GPIOY_10        32
+#define GPIOY_11        33
+#define GPIOY_12        34
+#define GPIOY_13        35
+#define GPIOY_14        36
+#define GPIOY_15        37
+#define GPIOY_16        38
+#define GPIODV_0        39
+#define GPIODV_1        40
+#define GPIODV_2        41
+#define GPIODV_3        42
+#define GPIODV_4        43
+#define GPIODV_5        44
+#define GPIODV_6        45
+#define GPIODV_7        46
+#define GPIODV_8        47
+#define GPIODV_9        48
+#define GPIODV_10       49
+#define GPIODV_11       50
+#define GPIODV_12       51
+#define GPIODV_13       52
+#define GPIODV_14       53
+#define GPIODV_15       54
+#define GPIODV_16       55
+#define GPIODV_17       56
+#define GPIODV_18       57
+#define GPIODV_19       58
+#define GPIODV_20       59
+#define GPIODV_21       60
+#define GPIODV_22       61
+#define GPIODV_23       62
+#define GPIODV_24       63
+#define GPIODV_25       64
+#define GPIODV_26       65
+#define GPIODV_27       66
+#define GPIODV_28       67
+#define GPIODV_29       68
+#define GPIOH_0         69
+#define GPIOH_1         70
+#define GPIOH_2         71
+#define GPIOH_3         72
+#define GPIOH_4         73
+#define GPIOH_5         74
+#define GPIOH_6         75
+#define GPIOH_7         76
+#define GPIOH_8         77
+#define GPIOH_9         78
+#define GPIOZ_0         79
+#define GPIOZ_1         80
+#define GPIOZ_2         81
+#define GPIOZ_3         82
+#define GPIOZ_4         83
+#define GPIOZ_5         84
+#define GPIOZ_6         85
+#define GPIOZ_7         86
+#define GPIOZ_8         87
+#define GPIOZ_9         88
+#define GPIOZ_10        89
+#define GPIOZ_11        90
+#define GPIOZ_12        91
+#define GPIOZ_13        92
+#define GPIOZ_14        93
+#define CARD_0          94
+#define CARD_1          95
+#define CARD_2          96
+#define CARD_3          97
+#define CARD_4          98
+#define CARD_5          99
+#define CARD_6          100
+#define BOOT_0          101
+#define BOOT_1          102
+#define BOOT_2          103
+#define BOOT_3          104
+#define BOOT_4          105
+#define BOOT_5          106
+#define BOOT_6          107
+#define BOOT_7          108
+#define BOOT_8          109
+#define BOOT_9          110
+#define BOOT_10         111
+#define BOOT_11         112
+#define BOOT_12         113
+#define BOOT_13         114
+#define BOOT_14         115
+#define BOOT_15         116
+#define BOOT_16         117
+#define BOOT_17         118
+#define BOOT_18         119
+
+/* Second GPIO chip */
+#define GPIOAO_0        0
+#define GPIOAO_1        1
+#define GPIOAO_2        2
+#define GPIOAO_3        3
+#define GPIOAO_4        4
+#define GPIOAO_5        5
+#define GPIOAO_6        6
+#define GPIOAO_7        7
+#define GPIOAO_8        8
+#define GPIOAO_9        9
+#define GPIOAO_10       10
+#define GPIOAO_11       11
+#define GPIOAO_12       12
+#define GPIOAO_13       13
+#define GPIO_BSD_EN     14
+#define GPIO_TEST_N     15
+
+#endif /* _DT_BINDINGS_MESON8_GPIO_H */
diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h
index 18eccefea06e..72c0415d6c21 100644
--- a/include/linux/pinctrl/consumer.h
+++ b/include/linux/pinctrl/consumer.h
@@ -82,7 +82,7 @@ static inline int pinctrl_gpio_direction_output(unsigned gpio)
 
 static inline struct pinctrl * __must_check pinctrl_get(struct device *dev)
 {
-        return NULL;
+        return ERR_PTR(-ENOSYS);
 }
 
 static inline void pinctrl_put(struct pinctrl *p)
@@ -93,7 +93,7 @@ static inline struct pinctrl_state * __must_check pinctrl_lookup_state(
                                                         struct pinctrl *p,
                                                         const char *name)
 {
-        return NULL;
+        return ERR_PTR(-ENOSYS);
 }
 
 static inline int pinctrl_select_state(struct pinctrl *p,
@@ -104,7 +104,7 @@ static inline int pinctrl_select_state(struct pinctrl *p,
 
 static inline struct pinctrl * __must_check devm_pinctrl_get(struct device *dev)
 {
-        return NULL;
+        return ERR_PTR(-ENOSYS);
 }
 
 static inline void devm_pinctrl_put(struct pinctrl *p)
diff --git a/include/linux/pinctrl/pinconf-generic.h b/include/linux/pinctrl/pinconf-generic.h
index d578a60eff23..fe65962b264f 100644
--- a/include/linux/pinctrl/pinconf-generic.h
+++ b/include/linux/pinctrl/pinconf-generic.h
@@ -115,6 +115,18 @@ enum pin_config_param {
         PIN_CONFIG_END = 0x7FFF,
 };
 
+#ifdef CONFIG_DEBUG_FS
+#define PCONFDUMP(a, b, c, d) { .param = a, .display = b, .format = c, \
+                                .has_arg = d }
+
+struct pin_config_item {
+        const enum pin_config_param param;
+        const char * const display;
+        const char * const format;
+        bool has_arg;
+};
+#endif /* CONFIG_DEBUG_FS */
+
 /*
  * Helpful configuration macro to be used in tables etc.
  */
@@ -150,6 +162,12 @@ static inline unsigned long pinconf_to_config_packed(enum pin_config_param param
 struct pinctrl_dev;
 struct pinctrl_map;
 
+struct pinconf_generic_params {
+        const char * const property;
+        enum pin_config_param param;
+        u32 default_value;
+};
+
 int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
                 struct device_node *np, struct pinctrl_map **map,
                 unsigned *reserved_maps, unsigned *num_maps,
@@ -174,6 +192,17 @@ static inline int pinconf_generic_dt_node_to_map_pin(
                         PIN_MAP_TYPE_CONFIGS_PIN);
 }
 
+static inline int pinconf_generic_dt_node_to_map_all(
+                struct pinctrl_dev *pctldev, struct device_node *np_config,
+                struct pinctrl_map **map, unsigned *num_maps)
+{
+        /*
+         * passing the type as PIN_MAP_TYPE_INVALID causes the underlying parser
+         * to infer the map type from the DT properties used.
+         */
+        return pinconf_generic_dt_node_to_map(pctldev, np_config, map, num_maps,
+                        PIN_MAP_TYPE_INVALID);
+}
 #endif
 
 #endif /* CONFIG_GENERIC_PINCONF */
diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index cc8e1aff0e28..66e4697516de 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -24,6 +24,7 @@ struct pinctrl_dev;
 struct pinctrl_map;
 struct pinmux_ops;
 struct pinconf_ops;
+struct pin_config_item;
 struct gpio_chip;
 struct device_node;
 
@@ -117,6 +118,12 @@ struct pinctrl_ops {
  * @confops: pin config operations vtable, if you support pin configuration in
  *      your driver
  * @owner: module providing the pin controller, used for refcounting
+ * @num_custom_params: Number of driver-specific custom parameters to be parsed
+ *      from the hardware description
+ * @custom_params: List of driver_specific custom parameters to be parsed from
+ *      the hardware description
+ * @custom_conf_items: Information how to print @params in debugfs, must be
+ *      the same size as the @custom_params, i.e. @num_custom_params
  */
 struct pinctrl_desc {
         const char *name;
@@ -126,6 +133,11 @@ struct pinctrl_desc {
         const struct pinmux_ops *pmxops;
         const struct pinconf_ops *confops;
         struct module *owner;
+#ifdef CONFIG_GENERIC_PINCONF
+        unsigned int num_custom_params;
+        const struct pinconf_generic_params *custom_params;
+        const struct pin_config_item *custom_conf_items;
+#endif
 };
 
 /* External interface to pin controller */