1 /* 1 /*
2 * Allwinner Reduced Serial Bus Driver 2 * Allwinner Reduced Serial Bus Driver
3 * 3 *
4 * Copyright (c) 2015 Chen-Yu Tsai 4 * Copyright (c) 2015 Chen-Yu Tsai
5 * 5 *
6 * Author: Chen-Yu Tsai <wens@csie.org> 6 * Author: Chen-Yu Tsai <wens@csie.org>
7 * 7 *
8 * This file is licensed under the terms of th 8 * This file is licensed under the terms of the GNU General Public
9 * License version 2. This program is license 9 * License version 2. This program is licensed "as is" without any
10 * warranty of any kind, whether express or im 10 * warranty of any kind, whether express or implied.
11 */ 11 */
12 #ifndef _SUNXI_RSB_H 12 #ifndef _SUNXI_RSB_H
13 #define _SUNXI_RSB_H 13 #define _SUNXI_RSB_H
14 14
15 #include <linux/device.h> 15 #include <linux/device.h>
16 #include <linux/regmap.h> 16 #include <linux/regmap.h>
17 #include <linux/types.h> 17 #include <linux/types.h>
18 18
19 struct sunxi_rsb; 19 struct sunxi_rsb;
20 20
21 /** 21 /**
22 * struct sunxi_rsb_device - Basic representat 22 * struct sunxi_rsb_device - Basic representation of an RSB device
23 * @dev: Driver model representation of 23 * @dev: Driver model representation of the device.
24 * @ctrl: RSB controller managing the bu 24 * @ctrl: RSB controller managing the bus hosting this device.
25 * @rtaddr: This device's runtime address 25 * @rtaddr: This device's runtime address
26 * @hwaddr: This device's hardware address 26 * @hwaddr: This device's hardware address
27 */ 27 */
28 struct sunxi_rsb_device { 28 struct sunxi_rsb_device {
29 struct device dev; 29 struct device dev;
30 struct sunxi_rsb *rsb; 30 struct sunxi_rsb *rsb;
31 int irq; 31 int irq;
32 u8 rtaddr; 32 u8 rtaddr;
33 u16 hwaddr; 33 u16 hwaddr;
34 }; 34 };
35 35
36 static inline struct sunxi_rsb_device *to_sunx 36 static inline struct sunxi_rsb_device *to_sunxi_rsb_device(struct device *d)
37 { 37 {
38 return container_of(d, struct sunxi_rs 38 return container_of(d, struct sunxi_rsb_device, dev);
39 } 39 }
40 40
41 static inline void *sunxi_rsb_device_get_drvda 41 static inline void *sunxi_rsb_device_get_drvdata(const struct sunxi_rsb_device *rdev)
42 { 42 {
43 return dev_get_drvdata(&rdev->dev); 43 return dev_get_drvdata(&rdev->dev);
44 } 44 }
45 45
46 static inline void sunxi_rsb_device_set_drvdat 46 static inline void sunxi_rsb_device_set_drvdata(struct sunxi_rsb_device *rdev,
47 47 void *data)
48 { 48 {
49 dev_set_drvdata(&rdev->dev, data); 49 dev_set_drvdata(&rdev->dev, data);
50 } 50 }
51 51
52 /** 52 /**
53 * struct sunxi_rsb_driver - RSB slave device 53 * struct sunxi_rsb_driver - RSB slave device driver
54 * @driver: RSB device drivers should init 54 * @driver: RSB device drivers should initialize name and owner field of
55 * this structure. 55 * this structure.
56 * @probe: binds this driver to a RSB dev 56 * @probe: binds this driver to a RSB device.
57 * @remove: unbinds this driver from the R 57 * @remove: unbinds this driver from the RSB device.
58 */ 58 */
59 struct sunxi_rsb_driver { 59 struct sunxi_rsb_driver {
60 struct device_driver driver; 60 struct device_driver driver;
61 int (*probe)(struct sunxi_rsb_device * 61 int (*probe)(struct sunxi_rsb_device *rdev);
62 void (*remove)(struct sunxi_rsb_device 62 void (*remove)(struct sunxi_rsb_device *rdev);
63 }; 63 };
64 64
65 static inline struct sunxi_rsb_driver *to_sunx 65 static inline struct sunxi_rsb_driver *to_sunxi_rsb_driver(struct device_driver *d)
66 { 66 {
67 return container_of(d, struct sunxi_rs 67 return container_of(d, struct sunxi_rsb_driver, driver);
68 } 68 }
69 69
70 int sunxi_rsb_driver_register(struct sunxi_rsb 70 int sunxi_rsb_driver_register(struct sunxi_rsb_driver *rdrv);
71 71
72 /** 72 /**
73 * sunxi_rsb_driver_unregister() - unregister 73 * sunxi_rsb_driver_unregister() - unregister an RSB client driver
74 * @rdrv: the driver to unregister 74 * @rdrv: the driver to unregister
75 */ 75 */
76 static inline void sunxi_rsb_driver_unregister 76 static inline void sunxi_rsb_driver_unregister(struct sunxi_rsb_driver *rdrv)
77 { 77 {
78 if (rdrv) 78 if (rdrv)
79 driver_unregister(&rdrv->drive 79 driver_unregister(&rdrv->driver);
80 } 80 }
81 81
82 #define module_sunxi_rsb_driver(__sunxi_rsb_dr 82 #define module_sunxi_rsb_driver(__sunxi_rsb_driver) \
83 module_driver(__sunxi_rsb_driver, sunx 83 module_driver(__sunxi_rsb_driver, sunxi_rsb_driver_register, \
84 sunxi_rsb_driver_unreg 84 sunxi_rsb_driver_unregister)
85 85
86 struct regmap *__devm_regmap_init_sunxi_rsb(st 86 struct regmap *__devm_regmap_init_sunxi_rsb(struct sunxi_rsb_device *rdev,
87 co 87 const struct regmap_config *config,
88 st 88 struct lock_class_key *lock_key,
89 co 89 const char *lock_name);
90 90
91 /** 91 /**
92 * devm_regmap_init_sunxi_rsb(): Initialise ma 92 * devm_regmap_init_sunxi_rsb(): Initialise managed register map
93 * 93 *
94 * @rdev: Device that will be interacted with 94 * @rdev: Device that will be interacted with
95 * @config: Configuration for register map 95 * @config: Configuration for register map
96 * 96 *
97 * The return value will be an ERR_PTR() on er 97 * The return value will be an ERR_PTR() on error or a valid pointer
98 * to a struct regmap. The regmap will be aut 98 * to a struct regmap. The regmap will be automatically freed by the
99 * device management code. 99 * device management code.
100 */ 100 */
101 #define devm_regmap_init_sunxi_rsb(rdev, confi 101 #define devm_regmap_init_sunxi_rsb(rdev, config) \
102 __regmap_lockdep_wrapper(__devm_regmap 102 __regmap_lockdep_wrapper(__devm_regmap_init_sunxi_rsb, #config, \
103 rdev, config) 103 rdev, config)
104 104
105 #endif /* _SUNXI_RSB_H */ 105 #endif /* _SUNXI_RSB_H */
106 106
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