diff options
Diffstat (limited to 'drivers/pinctrl/spear/pinctrl-spear.h')
-rw-r--r-- | drivers/pinctrl/spear/pinctrl-spear.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/pinctrl/spear/pinctrl-spear.h b/drivers/pinctrl/spear/pinctrl-spear.h new file mode 100644 index 000000000000..47a6b5b72f90 --- /dev/null +++ b/drivers/pinctrl/spear/pinctrl-spear.h | |||
@@ -0,0 +1,142 @@ | |||
1 | /* | ||
2 | * Driver header file for the ST Microelectronics SPEAr pinmux | ||
3 | * | ||
4 | * Copyright (C) 2012 ST Microelectronics | ||
5 | * Viresh Kumar <viresh.kumar@st.com> | ||
6 | * | ||
7 | * This file is licensed under the terms of the GNU General Public | ||
8 | * License version 2. This program is licensed "as is" without any | ||
9 | * warranty of any kind, whether express or implied. | ||
10 | */ | ||
11 | |||
12 | #ifndef __PINMUX_SPEAR_H__ | ||
13 | #define __PINMUX_SPEAR_H__ | ||
14 | |||
15 | #include <linux/pinctrl/pinctrl.h> | ||
16 | #include <linux/types.h> | ||
17 | |||
18 | struct platform_device; | ||
19 | struct device; | ||
20 | |||
21 | /** | ||
22 | * struct spear_pmx_mode - SPEAr pmx mode | ||
23 | * @name: name of pmx mode | ||
24 | * @mode: mode id | ||
25 | * @reg: register for configuring this mode | ||
26 | * @mask: mask of this mode in reg | ||
27 | * @val: val to be configured at reg after doing (val & mask) | ||
28 | */ | ||
29 | struct spear_pmx_mode { | ||
30 | const char *const name; | ||
31 | u16 mode; | ||
32 | u16 reg; | ||
33 | u16 mask; | ||
34 | u32 val; | ||
35 | }; | ||
36 | |||
37 | /** | ||
38 | * struct spear_muxreg - SPEAr mux reg configuration | ||
39 | * @reg: register offset | ||
40 | * @mask: mask bits | ||
41 | * @val: val to be written on mask bits | ||
42 | */ | ||
43 | struct spear_muxreg { | ||
44 | u16 reg; | ||
45 | u32 mask; | ||
46 | u32 val; | ||
47 | }; | ||
48 | |||
49 | /** | ||
50 | * struct spear_modemux - SPEAr mode mux configuration | ||
51 | * @modes: mode ids supported by this group of muxregs | ||
52 | * @nmuxregs: number of muxreg configurations to be done for modes | ||
53 | * @muxregs: array of muxreg configurations to be done for modes | ||
54 | */ | ||
55 | struct spear_modemux { | ||
56 | u16 modes; | ||
57 | u8 nmuxregs; | ||
58 | struct spear_muxreg *muxregs; | ||
59 | }; | ||
60 | |||
61 | /** | ||
62 | * struct spear_pingroup - SPEAr pin group configurations | ||
63 | * @name: name of pin group | ||
64 | * @pins: array containing pin numbers | ||
65 | * @npins: size of pins array | ||
66 | * @modemuxs: array of modemux configurations for this pin group | ||
67 | * @nmodemuxs: size of array modemuxs | ||
68 | * | ||
69 | * A representation of a group of pins in the SPEAr pin controller. Each group | ||
70 | * allows some parameter or parameters to be configured. | ||
71 | */ | ||
72 | struct spear_pingroup { | ||
73 | const char *name; | ||
74 | const unsigned *pins; | ||
75 | unsigned npins; | ||
76 | struct spear_modemux *modemuxs; | ||
77 | unsigned nmodemuxs; | ||
78 | }; | ||
79 | |||
80 | /** | ||
81 | * struct spear_function - SPEAr pinctrl mux function | ||
82 | * @name: The name of the function, exported to pinctrl core. | ||
83 | * @groups: An array of pin groups that may select this function. | ||
84 | * @ngroups: The number of entries in @groups. | ||
85 | */ | ||
86 | struct spear_function { | ||
87 | const char *name; | ||
88 | const char *const *groups; | ||
89 | unsigned ngroups; | ||
90 | }; | ||
91 | |||
92 | /** | ||
93 | * struct spear_pinctrl_machdata - SPEAr pin controller machine driver | ||
94 | * configuration | ||
95 | * @pins: An array describing all pins the pin controller affects. | ||
96 | * All pins which are also GPIOs must be listed first within the *array, | ||
97 | * and be numbered identically to the GPIO controller's *numbering. | ||
98 | * @npins: The numbmer of entries in @pins. | ||
99 | * @functions: An array describing all mux functions the SoC supports. | ||
100 | * @nfunctions: The numbmer of entries in @functions. | ||
101 | * @groups: An array describing all pin groups the pin SoC supports. | ||
102 | * @ngroups: The numbmer of entries in @groups. | ||
103 | * | ||
104 | * @modes_supported: Does SoC support modes | ||
105 | * @mode: mode configured from probe | ||
106 | * @pmx_modes: array of modes supported by SoC | ||
107 | * @npmx_modes: number of entries in pmx_modes. | ||
108 | */ | ||
109 | struct spear_pinctrl_machdata { | ||
110 | const struct pinctrl_pin_desc *pins; | ||
111 | unsigned npins; | ||
112 | struct spear_function **functions; | ||
113 | unsigned nfunctions; | ||
114 | struct spear_pingroup **groups; | ||
115 | unsigned ngroups; | ||
116 | |||
117 | bool modes_supported; | ||
118 | u16 mode; | ||
119 | struct spear_pmx_mode **pmx_modes; | ||
120 | unsigned npmx_modes; | ||
121 | }; | ||
122 | |||
123 | /** | ||
124 | * struct spear_pmx - SPEAr pinctrl mux | ||
125 | * @dev: pointer to struct dev of platform_device registered | ||
126 | * @pctl: pointer to struct pinctrl_dev | ||
127 | * @machdata: pointer to SoC or machine specific structure | ||
128 | * @vbase: virtual base address of pinmux controller | ||
129 | */ | ||
130 | struct spear_pmx { | ||
131 | struct device *dev; | ||
132 | struct pinctrl_dev *pctl; | ||
133 | struct spear_pinctrl_machdata *machdata; | ||
134 | void __iomem *vbase; | ||
135 | }; | ||
136 | |||
137 | /* exported routines */ | ||
138 | void __devinit pmx_init_addr(struct spear_pinctrl_machdata *machdata, u16 reg); | ||
139 | int __devinit spear_pinctrl_probe(struct platform_device *pdev, | ||
140 | struct spear_pinctrl_machdata *machdata); | ||
141 | int __devexit spear_pinctrl_remove(struct platform_device *pdev); | ||
142 | #endif /* __PINMUX_SPEAR_H__ */ | ||