diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/gpio.h | 15 | ||||
| -rw-r--r-- | include/linux/of.h | 10 | ||||
| -rw-r--r-- | include/linux/of_address.h | 44 | ||||
| -rw-r--r-- | include/linux/of_device.h | 61 | ||||
| -rw-r--r-- | include/linux/of_gpio.h | 35 | ||||
| -rw-r--r-- | include/linux/of_i2c.h | 13 | ||||
| -rw-r--r-- | include/linux/of_irq.h | 70 | ||||
| -rw-r--r-- | include/linux/of_platform.h | 53 | ||||
| -rw-r--r-- | include/linux/of_spi.h | 11 |
9 files changed, 250 insertions, 62 deletions
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h index 4f3d75e1ad3..c7376bf80b0 100644 --- a/include/asm-generic/gpio.h +++ b/include/asm-generic/gpio.h @@ -31,6 +31,7 @@ static inline int gpio_is_valid(int number) struct device; struct seq_file; struct module; +struct device_node; /** * struct gpio_chip - abstract a GPIO controller @@ -106,6 +107,17 @@ struct gpio_chip { const char *const *names; unsigned can_sleep:1; unsigned exported:1; + +#if defined(CONFIG_OF_GPIO) + /* + * If CONFIG_OF is enabled, then all GPIO controllers described in the + * device tree automatically may have an OF translation + */ + struct device_node *of_node; + int of_gpio_n_cells; + int (*of_xlate)(struct gpio_chip *gc, struct device_node *np, + const void *gpio_spec, u32 *flags); +#endif }; extern const char *gpiochip_is_requested(struct gpio_chip *chip, @@ -115,6 +127,9 @@ extern int __must_check gpiochip_reserve(int start, int ngpio); /* add/remove chips */ extern int gpiochip_add(struct gpio_chip *chip); extern int __must_check gpiochip_remove(struct gpio_chip *chip); +extern struct gpio_chip *gpiochip_find(void *data, + int (*match)(struct gpio_chip *chip, + void *data)); /* Always use the library code for GPIO management calls, diff --git a/include/linux/of.h b/include/linux/of.h index a367e19bb3a..cad7cf0ab27 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -70,6 +70,11 @@ extern struct device_node *allnodes; extern struct device_node *of_chosen; extern rwlock_t devtree_lock; +static inline bool of_node_is_root(const struct device_node *node) +{ + return node && (node->parent == NULL); +} + static inline int of_node_check_flag(struct device_node *n, unsigned long flag) { return test_bit(flag, &n->_flags); @@ -141,6 +146,11 @@ static inline unsigned long of_read_ulong(const __be32 *cell, int size) #define OF_BAD_ADDR ((u64)-1) +#ifndef of_node_to_nid +static inline int of_node_to_nid(struct device_node *np) { return -1; } +#define of_node_to_nid of_node_to_nid +#endif + extern struct device_node *of_find_node_by_name(struct device_node *from, const char *name); #define for_each_node_by_name(dn, name) \ diff --git a/include/linux/of_address.h b/include/linux/of_address.h new file mode 100644 index 00000000000..8aea06f0564 --- /dev/null +++ b/include/linux/of_address.h @@ -0,0 +1,44 @@ +#ifndef __OF_ADDRESS_H +#define __OF_ADDRESS_H +#include <linux/ioport.h> +#include <linux/of.h> + +extern u64 of_translate_address(struct device_node *np, const u32 *addr); +extern int of_address_to_resource(struct device_node *dev, int index, + struct resource *r); +extern void __iomem *of_iomap(struct device_node *device, int index); + +/* Extract an address from a device, returns the region size and + * the address space flags too. The PCI version uses a BAR number + * instead of an absolute index + */ +extern const u32 *of_get_address(struct device_node *dev, int index, + u64 *size, unsigned int *flags); + +#ifndef pci_address_to_pio +static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; } +#define pci_address_to_pio pci_address_to_pio +#endif + +#ifdef CONFIG_PCI +extern const u32 *of_get_pci_address(struct device_node *dev, int bar_no, + u64 *size, unsigned int *flags); +extern int of_pci_address_to_resource(struct device_node *dev, int bar, + struct resource *r); +#else /* CONFIG_PCI */ +static inline int of_pci_address_to_resource(struct device_node *dev, int bar, + struct resource *r) +{ + return -ENOSYS; +} + +static inline const u32 *of_get_pci_address(struct device_node *dev, + int bar_no, u64 *size, unsigned int *flags) +{ + return NULL; +} +#endif /* CONFIG_PCI */ + + +#endif /* __OF_ADDRESS_H */ + diff --git a/include/linux/of_device.h b/include/linux/of_device.h index 11651facc5f..35aa44ad9f2 100644 --- a/include/linux/of_device.h +++ b/include/linux/of_device.h @@ -1,32 +1,77 @@ #ifndef _LINUX_OF_DEVICE_H #define _LINUX_OF_DEVICE_H +/* + * The of_device *was* a kind of "base class" that was a superset of + * struct device for use by devices attached to an OF node and probed + * using OF properties. However, the important bit of OF-style + * probing, namely the device node pointer, has been moved into the + * common struct device when CONFIG_OF is set to make OF-style probing + * available to all bus types. So now, just make of_device and + * platform_device equivalent so that current of_platform bus users + * can be transparently migrated over to using the platform bus. + * + * This line will go away once all references to of_device are removed + * from the kernel. + */ +#define of_device platform_device +#include <linux/platform_device.h> +#include <linux/of_platform.h> /* temporary until merge */ + #ifdef CONFIG_OF_DEVICE #include <linux/device.h> #include <linux/of.h> #include <linux/mod_devicetable.h> -#include <asm/of_device.h> - #define to_of_device(d) container_of(d, struct of_device, dev) extern const struct of_device_id *of_match_device( const struct of_device_id *matches, const struct device *dev); +extern void of_device_make_bus_id(struct device *dev); + +/** + * of_driver_match_device - Tell if a driver's of_match_table matches a device. + * @drv: the device_driver structure to test + * @dev: the device structure to match against + */ +static inline int of_driver_match_device(const struct device *dev, + const struct device_driver *drv) +{ + return of_match_device(drv->of_match_table, dev) != NULL; +} -extern struct of_device *of_dev_get(struct of_device *dev); -extern void of_dev_put(struct of_device *dev); +extern struct platform_device *of_dev_get(struct platform_device *dev); +extern void of_dev_put(struct platform_device *dev); -extern int of_device_register(struct of_device *ofdev); -extern void of_device_unregister(struct of_device *ofdev); +extern int of_device_register(struct platform_device *ofdev); +extern void of_device_unregister(struct platform_device *ofdev); extern void of_release_dev(struct device *dev); -static inline void of_device_free(struct of_device *dev) +static inline void of_device_free(struct platform_device *dev) { of_release_dev(&dev->dev); } -extern ssize_t of_device_get_modalias(struct of_device *ofdev, +extern ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len); + +extern int of_device_uevent(struct device *dev, struct kobj_uevent_env *env); + + +#else /* CONFIG_OF_DEVICE */ + +static inline int of_driver_match_device(struct device *dev, + struct device_driver *drv) +{ + return 0; +} + +static inline int of_device_uevent(struct device *dev, + struct kobj_uevent_env *env) +{ + return -ENODEV; +} + #endif /* CONFIG_OF_DEVICE */ #endif /* _LINUX_OF_DEVICE_H */ diff --git a/include/linux/of_gpio.h b/include/linux/of_gpio.h index fc2472c3c25..6598c04dab0 100644 --- a/include/linux/of_gpio.h +++ b/include/linux/of_gpio.h @@ -33,34 +33,17 @@ enum of_gpio_flags { #ifdef CONFIG_OF_GPIO /* - * Generic OF GPIO chip - */ -struct of_gpio_chip { - struct gpio_chip gc; - int gpio_cells; - int (*xlate)(struct of_gpio_chip *of_gc, struct device_node *np, - const void *gpio_spec, enum of_gpio_flags *flags); -}; - -static inline struct of_gpio_chip *to_of_gpio_chip(struct gpio_chip *gc) -{ - return container_of(gc, struct of_gpio_chip, gc); -} - -/* * OF GPIO chip for memory mapped banks */ struct of_mm_gpio_chip { - struct of_gpio_chip of_gc; + struct gpio_chip gc; void (*save_regs)(struct of_mm_gpio_chip *mm_gc); void __iomem *regs; }; static inline struct of_mm_gpio_chip *to_of_mm_gpio_chip(struct gpio_chip *gc) { - struct of_gpio_chip *of_gc = to_of_gpio_chip(gc); - - return container_of(of_gc, struct of_mm_gpio_chip, of_gc); + return container_of(gc, struct of_mm_gpio_chip, gc); } extern int of_get_gpio_flags(struct device_node *np, int index, @@ -69,11 +52,12 @@ extern unsigned int of_gpio_count(struct device_node *np); extern int of_mm_gpiochip_add(struct device_node *np, struct of_mm_gpio_chip *mm_gc); -extern int of_gpio_simple_xlate(struct of_gpio_chip *of_gc, - struct device_node *np, - const void *gpio_spec, - enum of_gpio_flags *flags); -#else + +extern void of_gpiochip_add(struct gpio_chip *gc); +extern void of_gpiochip_remove(struct gpio_chip *gc); +extern struct gpio_chip *of_node_to_gpiochip(struct device_node *np); + +#else /* CONFIG_OF_GPIO */ /* Drivers may not strictly depend on the GPIO support, so let them link. */ static inline int of_get_gpio_flags(struct device_node *np, int index, @@ -87,6 +71,9 @@ static inline unsigned int of_gpio_count(struct device_node *np) return 0; } +static inline void of_gpiochip_add(struct gpio_chip *gc) { } +static inline void of_gpiochip_remove(struct gpio_chip *gc) { } + #endif /* CONFIG_OF_GPIO */ /** diff --git a/include/linux/of_i2c.h b/include/linux/of_i2c.h index 34974b5a76f..0efe8d465f5 100644 --- a/include/linux/of_i2c.h +++ b/include/linux/of_i2c.h @@ -12,12 +12,19 @@ #ifndef __LINUX_OF_I2C_H #define __LINUX_OF_I2C_H +#if defined(CONFIG_OF_I2C) || defined(CONFIG_OF_I2C_MODULE) #include <linux/i2c.h> -void of_register_i2c_devices(struct i2c_adapter *adap, - struct device_node *adap_node); +extern void of_i2c_register_devices(struct i2c_adapter *adap); /* must call put_device() when done with returned i2c_client device */ -struct i2c_client *of_find_i2c_device_by_node(struct device_node *node); +extern struct i2c_client *of_find_i2c_device_by_node(struct device_node *node); + +#else +static inline void of_i2c_register_devices(struct i2c_adapter *adap) +{ + return; +} +#endif /* CONFIG_OF_I2C */ #endif /* __LINUX_OF_I2C_H */ diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h new file mode 100644 index 00000000000..5929781c104 --- /dev/null +++ b/include/linux/of_irq.h @@ -0,0 +1,70 @@ +#ifndef __OF_IRQ_H +#define __OF_IRQ_H + +#if defined(CONFIG_OF) +struct of_irq; +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/of.h> + +/* + * irq_of_parse_and_map() is used ba all OF enabled platforms; but SPARC + * implements it differently. However, the prototype is the same for all, + * so declare it here regardless of the CONFIG_OF_IRQ setting. + */ +extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); + +#if defined(CONFIG_OF_IRQ) +/** + * of_irq - container for device_node/irq_specifier pair for an irq controller + * @controller: pointer to interrupt controller device tree node + * @size: size of interrupt specifier + * @specifier: array of cells @size long specifing the specific interrupt + * + * This structure is returned when an interrupt is mapped. The controller + * field needs to be put() after use + */ +#define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ +struct of_irq { + struct device_node *controller; /* Interrupt controller node */ + u32 size; /* Specifier size */ + u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ +}; + +/* + * Workarounds only applied to 32bit powermac machines + */ +#define OF_IMAP_OLDWORLD_MAC 0x00000001 +#define OF_IMAP_NO_PHANDLE 0x00000002 + +#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) +extern unsigned int of_irq_workarounds; +extern struct device_node *of_irq_dflt_pic; +extern int of_irq_map_oldworld(struct device_node *device, int index, + struct of_irq *out_irq); +#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ +#define of_irq_workarounds (0) +#define of_irq_dflt_pic (NULL) +static inline int of_irq_map_oldworld(struct device_node *device, int index, + struct of_irq *out_irq) +{ + return -EINVAL; +} +#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ + + +extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec, + u32 ointsize, const u32 *addr, + struct of_irq *out_irq); +extern int of_irq_map_one(struct device_node *device, int index, + struct of_irq *out_irq); +extern unsigned int irq_create_of_mapping(struct device_node *controller, + const u32 *intspec, + unsigned int intsize); +extern int of_irq_to_resource(struct device_node *dev, int index, + struct resource *r); + +#endif /* CONFIG_OF_IRQ */ +#endif /* CONFIG_OF */ +#endif /* __OF_IRQ_H */ diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h index 1643d3761eb..4e6d989c06d 100644 --- a/include/linux/of_platform.h +++ b/include/linux/of_platform.h @@ -17,29 +17,24 @@ #include <linux/mod_devicetable.h> #include <linux/pm.h> #include <linux/of_device.h> - -/* - * The of_platform_bus_type is a bus type used by drivers that do not - * attach to a macio or similar bus but still use OF probing - * mechanism - */ -extern struct bus_type of_platform_bus_type; +#include <linux/platform_device.h> /* * An of_platform_driver driver is attached to a basic of_device on - * the "platform bus" (of_platform_bus_type). + * the "platform bus" (platform_bus_type). */ struct of_platform_driver { - int (*probe)(struct of_device* dev, + int (*probe)(struct platform_device* dev, const struct of_device_id *match); - int (*remove)(struct of_device* dev); + int (*remove)(struct platform_device* dev); - int (*suspend)(struct of_device* dev, pm_message_t state); - int (*resume)(struct of_device* dev); - int (*shutdown)(struct of_device* dev); + int (*suspend)(struct platform_device* dev, pm_message_t state); + int (*resume)(struct platform_device* dev); + int (*shutdown)(struct platform_device* dev); struct device_driver driver; + struct platform_driver platform_driver; }; #define to_of_platform_driver(drv) \ container_of(drv,struct of_platform_driver, driver) @@ -49,20 +44,30 @@ extern int of_register_driver(struct of_platform_driver *drv, extern void of_unregister_driver(struct of_platform_driver *drv); /* Platform drivers register/unregister */ -static inline int of_register_platform_driver(struct of_platform_driver *drv) -{ - return of_register_driver(drv, &of_platform_bus_type); -} -static inline void of_unregister_platform_driver(struct of_platform_driver *drv) -{ - of_unregister_driver(drv); -} +extern int of_register_platform_driver(struct of_platform_driver *drv); +extern void of_unregister_platform_driver(struct of_platform_driver *drv); -#include <asm/of_platform.h> - -extern struct of_device *of_find_device_by_node(struct device_node *np); +extern struct platform_device *of_device_alloc(struct device_node *np, + const char *bus_id, + struct device *parent); +extern struct platform_device *of_find_device_by_node(struct device_node *np); extern int of_bus_type_init(struct bus_type *bus, const char *name); + +#if !defined(CONFIG_SPARC) /* SPARC has its own device registration method */ +/* Platform devices and busses creation */ +extern struct platform_device *of_platform_device_create(struct device_node *np, + const char *bus_id, + struct device *parent); + +/* pseudo "matches" value to not do deep probe */ +#define OF_NO_DEEP_PROBE ((struct of_device_id *)-1) + +extern int of_platform_bus_probe(struct device_node *root, + const struct of_device_id *matches, + struct device *parent); +#endif /* !CONFIG_SPARC */ + #endif /* CONFIG_OF_DEVICE */ #endif /* _LINUX_OF_PLATFORM_H */ diff --git a/include/linux/of_spi.h b/include/linux/of_spi.h index 5f71ee8c086..9e3e70f78ae 100644 --- a/include/linux/of_spi.h +++ b/include/linux/of_spi.h @@ -9,10 +9,15 @@ #ifndef __LINUX_OF_SPI_H #define __LINUX_OF_SPI_H -#include <linux/of.h> #include <linux/spi/spi.h> -extern void of_register_spi_devices(struct spi_master *master, - struct device_node *np); +#if defined(CONFIG_OF_SPI) || defined(CONFIG_OF_SPI_MODULE) +extern void of_register_spi_devices(struct spi_master *master); +#else +static inline void of_register_spi_devices(struct spi_master *master) +{ + return; +} +#endif /* CONFIG_OF_SPI */ #endif /* __LINUX_OF_SPI */ |