1 #ifndef PINCTRL_PINCTRL_NOMADIK_H
2 #define PINCTRL_PINCTRL_NOMADIK_H
3
4 #include <linux/platform_data/pinctrl-nomadik.h>
5
6 /* Package definitions */
7 #define PINCTRL_NMK_STN8815 0
8 #define PINCTRL_NMK_DB8500 1
9 #define PINCTRL_NMK_DB8540 2
10
11 #define PRCM_GPIOCR_ALTCX(pin_num,\
12 altc1_used, altc1_ri, altc1_cb,\
13 altc2_used, altc2_ri, altc2_cb,\
14 altc3_used, altc3_ri, altc3_cb,\
15 altc4_used, altc4_ri, altc4_cb)\
16 {\
17 .pin = pin_num,\
18 .altcx[PRCM_IDX_GPIOCR_ALTC1] = {\
19 .used = altc1_used,\
20 .reg_index = altc1_ri,\
21 .control_bit = altc1_cb\
22 },\
23 .altcx[PRCM_IDX_GPIOCR_ALTC2] = {\
24 .used = altc2_used,\
25 .reg_index = altc2_ri,\
26 .control_bit = altc2_cb\
27 },\
28 .altcx[PRCM_IDX_GPIOCR_ALTC3] = {\
29 .used = altc3_used,\
30 .reg_index = altc3_ri,\
31 .control_bit = altc3_cb\
32 },\
33 .altcx[PRCM_IDX_GPIOCR_ALTC4] = {\
34 .used = altc4_used,\
35 .reg_index = altc4_ri,\
36 .control_bit = altc4_cb\
37 },\
38 }
39
40 /**
41 * enum prcm_gpiocr_reg_index
42 * Used to reference an PRCM GPIOCR register address.
43 */
44 enum prcm_gpiocr_reg_index {
45 PRCM_IDX_GPIOCR1,
46 PRCM_IDX_GPIOCR2,
47 PRCM_IDX_GPIOCR3
48 };
49 /**
50 * enum prcm_gpiocr_altcx_index
51 * Used to reference an Other alternate-C function.
52 */
53 enum prcm_gpiocr_altcx_index {
54 PRCM_IDX_GPIOCR_ALTC1,
55 PRCM_IDX_GPIOCR_ALTC2,
56 PRCM_IDX_GPIOCR_ALTC3,
57 PRCM_IDX_GPIOCR_ALTC4,
58 PRCM_IDX_GPIOCR_ALTC_MAX,
59 };
60
61 /**
62 * struct prcm_gpio_altcx - Other alternate-C function
63 * @used: other alternate-C function availability
64 * @reg_index: PRCM GPIOCR register index used to control the function
65 * @control_bit: PRCM GPIOCR bit used to control the function
66 */
67 struct prcm_gpiocr_altcx {
68 bool used:1;
69 u8 reg_index:2;
70 u8 control_bit:5;
71 } __packed;
72
73 /**
74 * struct prcm_gpio_altcx_pin_desc - Other alternate-C pin
75 * @pin: The pin number
76 * @altcx: array of other alternate-C[1-4] functions
77 */
78 struct prcm_gpiocr_altcx_pin_desc {
79 unsigned short pin;
80 struct prcm_gpiocr_altcx altcx[PRCM_IDX_GPIOCR_ALTC_MAX];
81 };
82
83 /**
84 * struct nmk_function - Nomadik pinctrl mux function
85 * @name: The name of the function, exported to pinctrl core.
86 * @groups: An array of pin groups that may select this function.
87 * @ngroups: The number of entries in @groups.
88 */
89 struct nmk_function {
90 const char *name;
91 const char * const *groups;
92 unsigned ngroups;
93 };
94
95 /**
96 * struct nmk_pingroup - describes a Nomadik pin group
97 * @name: the name of this specific pin group
98 * @pins: an array of discrete physical pins used in this group, taken
99 * from the driver-local pin enumeration space
100 * @num_pins: the number of pins in this group array, i.e. the number of
101 * elements in .pins so we can iterate over that array
102 * @altsetting: the altsetting to apply to all pins in this group to
103 * configure them to be used by a function
104 */
105 struct nmk_pingroup {
106 const char *name;
107 const unsigned int *pins;
108 const unsigned npins;
109 int altsetting;
110 };
111
112 /**
113 * struct nmk_pinctrl_soc_data - Nomadik pin controller per-SoC configuration
114 * @gpio_ranges: An array of GPIO ranges for this SoC
115 * @gpio_num_ranges: The number of GPIO ranges for this SoC
116 * @pins: An array describing all pins the pin controller affects.
117 * All pins which are also GPIOs must be listed first within the
118 * array, and be numbered identically to the GPIO controller's
119 * numbering.
120 * @npins: The number of entries in @pins.
121 * @functions: The functions supported on this SoC.
122 * @nfunction: The number of entries in @functions.
123 * @groups: An array describing all pin groups the pin SoC supports.
124 * @ngroups: The number of entries in @groups.
125 * @altcx_pins: The pins that support Other alternate-C function on this SoC
126 * @npins_altcx: The number of Other alternate-C pins
127 * @prcm_gpiocr_registers: The array of PRCM GPIOCR registers on this SoC
128 */
129 struct nmk_pinctrl_soc_data {
130 struct pinctrl_gpio_range *gpio_ranges;
131 unsigned gpio_num_ranges;
132 const struct pinctrl_pin_desc *pins;
133 unsigned npins;
134 const struct nmk_function *functions;
135 unsigned nfunctions;
136 const struct nmk_pingroup *groups;
137 unsigned ngroups;
138 const struct prcm_gpiocr_altcx_pin_desc *altcx_pins;
139 unsigned npins_altcx;
140 const u16 *prcm_gpiocr_registers;
141 };
142
143 #ifdef CONFIG_PINCTRL_STN8815
144
145 void nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc);
146
147 #else
148
149 static inline void
nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data ** soc)150 nmk_pinctrl_stn8815_init(const struct nmk_pinctrl_soc_data **soc)
151 {
152 }
153
154 #endif
155
156 #ifdef CONFIG_PINCTRL_DB8500
157
158 void nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc);
159
160 #else
161
162 static inline void
nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data ** soc)163 nmk_pinctrl_db8500_init(const struct nmk_pinctrl_soc_data **soc)
164 {
165 }
166
167 #endif
168
169 #ifdef CONFIG_PINCTRL_DB8540
170
171 void nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc);
172
173 #else
174
175 static inline void
nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data ** soc)176 nmk_pinctrl_db8540_init(const struct nmk_pinctrl_soc_data **soc)
177 {
178 }
179
180 #endif
181
182 #endif /* PINCTRL_PINCTRL_NOMADIK_H */
183