pinctrl: break out a pinctrl consumer header

This breaks out a <linux/pinctrl/consumer.h> header to be used by
all pinmux and pinconfig alike, so drivers needing services from
pinctrl does not need to include different headers. This is similar
to the approach taken by the regulator API.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 118 insertions, 0 deletions

diff --git a/include/linux/pinctrl/consumer.h b/include/linux/pinctrl/consumer.h
new file mode 100644
index 000000000000..9c8513d5d0fb
--- /dev/null
+++ b/include/linux/pinctrl/consumer.h
@@ -0,0 +1,118 @@
+/*
+ * Consumer interface the pin control subsystem
+ *
+ * Copyright (C) 2012 ST-Ericsson SA
+ * Written on behalf of Linaro for ST-Ericsson
+ * Based on bits of regulator core, gpio core and clk core
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+#ifndef __LINUX_PINCTRL_CONSUMER_H
+#define __LINUX_PINCTRL_CONSUMER_H
+
+#include <linux/list.h>
+#include <linux/seq_file.h>
+#include "pinctrl.h"
+
+/* This struct is private to the core and should be regarded as a cookie */
+struct pinmux;
+
+#ifdef CONFIG_PINMUX
+
+/* External interface to pinmux */
+extern int pinmux_request_gpio(unsigned gpio);
+extern void pinmux_free_gpio(unsigned gpio);
+extern int pinmux_gpio_direction_input(unsigned gpio);
+extern int pinmux_gpio_direction_output(unsigned gpio);
+extern struct pinmux * __must_check pinmux_get(struct device *dev, const char *name);
+extern void pinmux_put(struct pinmux *pmx);
+extern int pinmux_enable(struct pinmux *pmx);
+extern void pinmux_disable(struct pinmux *pmx);
+
+#else /* !CONFIG_PINMUX */
+
+static inline int pinmux_request_gpio(unsigned gpio)
+{
+        return 0;
+}
+
+static inline void pinmux_free_gpio(unsigned gpio)
+{
+}
+
+static inline int pinmux_gpio_direction_input(unsigned gpio)
+{
+        return 0;
+}
+
+static inline int pinmux_gpio_direction_output(unsigned gpio)
+{
+        return 0;
+}
+
+static inline struct pinmux * __must_check pinmux_get(struct device *dev, const char *name)
+{
+        return NULL;
+}
+
+static inline void pinmux_put(struct pinmux *pmx)
+{
+}
+
+static inline int pinmux_enable(struct pinmux *pmx)
+{
+        return 0;
+}
+
+static inline void pinmux_disable(struct pinmux *pmx)
+{
+}
+
+#endif /* CONFIG_PINMUX */
+
+#ifdef CONFIG_PINCONF
+
+extern int pin_config_get(const char *dev_name, const char *name,
+                          unsigned long *config);
+extern int pin_config_set(const char *dev_name, const char *name,
+                          unsigned long config);
+extern int pin_config_group_get(const char *dev_name,
+                                const char *pin_group,
+                                unsigned long *config);
+extern int pin_config_group_set(const char *dev_name,
+                                const char *pin_group,
+                                unsigned long config);
+
+#else
+
+static inline int pin_config_get(const char *dev_name, const char *name,
+                                 unsigned long *config)
+{
+        return 0;
+}
+
+static inline int pin_config_set(const char *dev_name, const char *name,
+                                 unsigned long config)
+{
+        return 0;
+}
+
+static inline int pin_config_group_get(const char *dev_name,
+                                       const char *pin_group,
+                                       unsigned long *config)
+{
+        return 0;
+}
+
+static inline int pin_config_group_set(const char *dev_name,
+                                       const char *pin_group,
+                                       unsigned long config)
+{
+        return 0;
+}
+
+#endif
+
+#endif /* __LINUX_PINCTRL_CONSUMER_H */