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15ac7afe TL |
1 | /* |
2 | * Copyright (C) 2009 Nokia | |
112485e9 | 3 | * Copyright (C) 2009-2010 Texas Instruments |
15ac7afe TL |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | ||
ddaa912a TL |
10 | #include "mux34xx.h" |
11 | ||
15ac7afe TL |
12 | #define OMAP_MUX_TERMINATOR 0xffff |
13 | ||
14 | /* 34xx mux mode options for each pin. See TRM for options */ | |
15 | #define OMAP_MUX_MODE0 0 | |
16 | #define OMAP_MUX_MODE1 1 | |
17 | #define OMAP_MUX_MODE2 2 | |
18 | #define OMAP_MUX_MODE3 3 | |
19 | #define OMAP_MUX_MODE4 4 | |
20 | #define OMAP_MUX_MODE5 5 | |
21 | #define OMAP_MUX_MODE6 6 | |
22 | #define OMAP_MUX_MODE7 7 | |
23 | ||
24 | /* 24xx/34xx mux bit defines */ | |
25 | #define OMAP_PULL_ENA (1 << 3) | |
26 | #define OMAP_PULL_UP (1 << 4) | |
27 | #define OMAP_ALTELECTRICALSEL (1 << 5) | |
28 | ||
d623a0e1 | 29 | /* omap3/4/5 specific mux bit defines */ |
15ac7afe TL |
30 | #define OMAP_INPUT_EN (1 << 8) |
31 | #define OMAP_OFF_EN (1 << 9) | |
32 | #define OMAP_OFFOUT_EN (1 << 10) | |
33 | #define OMAP_OFFOUT_VAL (1 << 11) | |
34 | #define OMAP_OFF_PULL_EN (1 << 12) | |
35 | #define OMAP_OFF_PULL_UP (1 << 13) | |
36 | #define OMAP_WAKEUP_EN (1 << 14) | |
a041a52c BC |
37 | #define OMAP_WAKEUP_EVENT (1 << 15) |
38 | ||
15ac7afe TL |
39 | /* Active pin states */ |
40 | #define OMAP_PIN_OUTPUT 0 | |
41 | #define OMAP_PIN_INPUT OMAP_INPUT_EN | |
42 | #define OMAP_PIN_INPUT_PULLUP (OMAP_PULL_ENA | OMAP_INPUT_EN \ | |
43 | | OMAP_PULL_UP) | |
44 | #define OMAP_PIN_INPUT_PULLDOWN (OMAP_PULL_ENA | OMAP_INPUT_EN) | |
45 | ||
46 | /* Off mode states */ | |
47 | #define OMAP_PIN_OFF_NONE 0 | |
48 | #define OMAP_PIN_OFF_OUTPUT_HIGH (OMAP_OFF_EN | OMAP_OFFOUT_EN \ | |
49 | | OMAP_OFFOUT_VAL) | |
50 | #define OMAP_PIN_OFF_OUTPUT_LOW (OMAP_OFF_EN | OMAP_OFFOUT_EN) | |
51 | #define OMAP_PIN_OFF_INPUT_PULLUP (OMAP_OFF_EN | OMAP_OFF_PULL_EN \ | |
52 | | OMAP_OFF_PULL_UP) | |
53 | #define OMAP_PIN_OFF_INPUT_PULLDOWN (OMAP_OFF_EN | OMAP_OFF_PULL_EN) | |
54 | #define OMAP_PIN_OFF_WAKEUPENABLE OMAP_WAKEUP_EN | |
55 | ||
421e8450 OM |
56 | #define OMAP_MODE_GPIO(partition, x) (((x) & OMAP_MUX_MODE7) == \ |
57 | partition->gpio) | |
91930652 | 58 | #define OMAP_MODE_UART(x) (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE0) |
15ac7afe | 59 | |
112485e9 | 60 | /* Flags for omapX_mux_init */ |
15ac7afe | 61 | #define OMAP_PACKAGE_MASK 0xffff |
6dd8a682 TL |
62 | #define OMAP_PACKAGE_CBP 6 /* 515-pin 0.40 0.50 */ |
63 | #define OMAP_PACKAGE_CUS 5 /* 423-pin 0.65 */ | |
64 | #define OMAP_PACKAGE_CBB 4 /* 515-pin 0.40 0.50 */ | |
65 | #define OMAP_PACKAGE_CBC 3 /* 515-pin 0.50 0.65 */ | |
15ac7afe | 66 | |
112485e9 BC |
67 | #define OMAP_MUX_NR_MODES 8 /* Available modes */ |
68 | #define OMAP_MUX_NR_SIDES 2 /* Bottom & top */ | |
69 | ||
70 | /* | |
71 | * omap_mux_init flags definition: | |
72 | * | |
421e8450 OM |
73 | * OMAP_GPIO_MUX_MODE, bits 0-2: gpio muxing mode, same like pad control |
74 | * register which includes values from 0-7. | |
112485e9 BC |
75 | * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits. |
76 | * The default value is 16 bits. | |
112485e9 | 77 | */ |
421e8450 OM |
78 | #define OMAP_MUX_GPIO_IN_MODE0 OMAP_MUX_MODE0 |
79 | #define OMAP_MUX_GPIO_IN_MODE1 OMAP_MUX_MODE1 | |
80 | #define OMAP_MUX_GPIO_IN_MODE2 OMAP_MUX_MODE2 | |
81 | #define OMAP_MUX_GPIO_IN_MODE3 OMAP_MUX_MODE3 | |
82 | #define OMAP_MUX_GPIO_IN_MODE4 OMAP_MUX_MODE4 | |
83 | #define OMAP_MUX_GPIO_IN_MODE5 OMAP_MUX_MODE5 | |
84 | #define OMAP_MUX_GPIO_IN_MODE6 OMAP_MUX_MODE6 | |
85 | #define OMAP_MUX_GPIO_IN_MODE7 OMAP_MUX_MODE7 | |
86 | #define OMAP_MUX_REG_8BIT (1 << 3) | |
112485e9 | 87 | |
40e44399 TL |
88 | /** |
89 | * struct omap_board_data - board specific device data | |
90 | * @id: instance id | |
91 | * @flags: additional flags for platform init code | |
92 | * @pads: array of device specific pads | |
93 | * @pads_cnt: ARRAY_SIZE() of pads | |
94 | */ | |
95 | struct omap_board_data { | |
96 | int id; | |
97 | u32 flags; | |
98 | struct omap_device_pad *pads; | |
99 | int pads_cnt; | |
100 | }; | |
101 | ||
112485e9 BC |
102 | /** |
103 | * struct mux_partition - contain partition related information | |
104 | * @name: name of the current partition | |
105 | * @flags: flags specific to this partition | |
421e8450 | 106 | * @gpio: gpio mux mode |
112485e9 BC |
107 | * @phys: physical address |
108 | * @size: partition size | |
109 | * @base: virtual address after ioremap | |
110 | * @muxmodes: list of nodes that belong to a partition | |
111 | * @node: list node for the partitions linked list | |
112 | */ | |
113 | struct omap_mux_partition { | |
114 | const char *name; | |
115 | u32 flags; | |
421e8450 | 116 | u32 gpio; |
112485e9 BC |
117 | u32 phys; |
118 | u32 size; | |
119 | void __iomem *base; | |
120 | struct list_head muxmodes; | |
121 | struct list_head node; | |
122 | }; | |
15ac7afe TL |
123 | |
124 | /** | |
125 | * struct omap_mux - data for omap mux register offset and it's value | |
126 | * @reg_offset: mux register offset from the mux base | |
127 | * @gpio: GPIO number | |
128 | * @muxnames: available signal modes for a ball | |
112485e9 | 129 | * @balls: available balls on the package |
15ac7afe TL |
130 | */ |
131 | struct omap_mux { | |
132 | u16 reg_offset; | |
133 | u16 gpio; | |
134 | #ifdef CONFIG_OMAP_MUX | |
135 | char *muxnames[OMAP_MUX_NR_MODES]; | |
136 | #ifdef CONFIG_DEBUG_FS | |
137 | char *balls[OMAP_MUX_NR_SIDES]; | |
138 | #endif | |
139 | #endif | |
140 | }; | |
141 | ||
142 | /** | |
143 | * struct omap_ball - data for balls on omap package | |
144 | * @reg_offset: mux register offset from the mux base | |
145 | * @balls: available balls on the package | |
146 | */ | |
147 | struct omap_ball { | |
148 | u16 reg_offset; | |
149 | char *balls[OMAP_MUX_NR_SIDES]; | |
150 | }; | |
151 | ||
152 | /** | |
153 | * struct omap_board_mux - data for initializing mux registers | |
154 | * @reg_offset: mux register offset from the mux base | |
155 | * @mux_value: desired mux value to set | |
156 | */ | |
157 | struct omap_board_mux { | |
158 | u16 reg_offset; | |
159 | u16 value; | |
160 | }; | |
161 | ||
9796b323 TL |
162 | #define OMAP_DEVICE_PAD_REMUX BIT(1) /* Dynamically remux a pad, |
163 | needs enable, idle and off | |
164 | values */ | |
165 | #define OMAP_DEVICE_PAD_WAKEUP BIT(0) /* Pad is wake-up capable */ | |
166 | ||
167 | /** | |
168 | * struct omap_device_pad - device specific pad configuration | |
169 | * @name: signal name | |
170 | * @flags: pad specific runtime flags | |
171 | * @enable: runtime value for a pad | |
172 | * @idle: idle value for a pad | |
173 | * @off: off value for a pad, defaults to safe mode | |
174 | * @partition: mux partition | |
175 | * @mux: mux register | |
176 | */ | |
177 | struct omap_device_pad { | |
178 | char *name; | |
179 | u8 flags; | |
180 | u16 enable; | |
181 | u16 idle; | |
182 | u16 off; | |
183 | struct omap_mux_partition *partition; | |
184 | struct omap_mux *mux; | |
185 | }; | |
186 | ||
8d9af88f TL |
187 | struct omap_hwmod_mux_info; |
188 | ||
8aee6039 TL |
189 | #define OMAP_MUX_STATIC(signal, mode) \ |
190 | { \ | |
191 | .name = (signal), \ | |
192 | .enable = (mode), \ | |
193 | } | |
194 | ||
ac3dbeef | 195 | #if defined(CONFIG_OMAP_MUX) |
15ac7afe TL |
196 | |
197 | /** | |
198 | * omap_mux_init_gpio - initialize a signal based on the GPIO number | |
199 | * @gpio: GPIO number | |
200 | * @val: Options for the mux register value | |
201 | */ | |
202 | int omap_mux_init_gpio(int gpio, int val); | |
203 | ||
204 | /** | |
205 | * omap_mux_init_signal - initialize a signal based on the signal name | |
206 | * @muxname: Mux name in mode0_name.signal_name format | |
207 | * @val: Options for the mux register value | |
208 | */ | |
5a3b2f7a | 209 | int omap_mux_init_signal(const char *muxname, int val); |
15ac7afe | 210 | |
9796b323 TL |
211 | /** |
212 | * omap_hwmod_mux_init - initialize hwmod specific mux data | |
213 | * @bpads: Board specific device signal names | |
214 | * @nr_pads: Number of signal names for the device | |
215 | */ | |
216 | extern struct omap_hwmod_mux_info * | |
217 | omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads); | |
218 | ||
8d9af88f TL |
219 | /** |
220 | * omap_hwmod_mux - omap hwmod specific pin muxing | |
221 | * @hmux: Pads for a hwmod | |
222 | * @state: Desired _HWMOD_STATE | |
223 | * | |
224 | * Called only from omap_hwmod.c, do not use. | |
225 | */ | |
226 | void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state); | |
227 | ||
91930652 G |
228 | int omap_mux_get_by_name(const char *muxname, |
229 | struct omap_mux_partition **found_partition, | |
230 | struct omap_mux **found_mux); | |
15ac7afe TL |
231 | #else |
232 | ||
91930652 G |
233 | static inline int omap_mux_get_by_name(const char *muxname, |
234 | struct omap_mux_partition **found_partition, | |
235 | struct omap_mux **found_mux) | |
236 | { | |
237 | return 0; | |
238 | } | |
239 | ||
15ac7afe TL |
240 | static inline int omap_mux_init_gpio(int gpio, int val) |
241 | { | |
242 | return 0; | |
243 | } | |
244 | static inline int omap_mux_init_signal(char *muxname, int val) | |
245 | { | |
246 | return 0; | |
247 | } | |
248 | ||
9796b323 TL |
249 | static inline struct omap_hwmod_mux_info * |
250 | omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads) | |
251 | { | |
252 | return NULL; | |
253 | } | |
254 | ||
8d9af88f TL |
255 | static inline void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state) |
256 | { | |
257 | } | |
258 | ||
cc4915d8 | 259 | static struct omap_board_mux *board_mux __maybe_unused; |
7203f8a4 | 260 | |
15ac7afe TL |
261 | #endif |
262 | ||
263 | /** | |
264 | * omap_mux_get_gpio() - get mux register value based on GPIO number | |
265 | * @gpio: GPIO number | |
266 | * | |
267 | */ | |
268 | u16 omap_mux_get_gpio(int gpio); | |
269 | ||
270 | /** | |
271 | * omap_mux_set_gpio() - set mux register value based on GPIO number | |
272 | * @val: New mux register value | |
273 | * @gpio: GPIO number | |
274 | * | |
275 | */ | |
276 | void omap_mux_set_gpio(u16 val, int gpio); | |
277 | ||
112485e9 BC |
278 | /** |
279 | * omap_mux_get() - get a mux partition by name | |
280 | * @name: Name of the mux partition | |
281 | * | |
282 | */ | |
283 | struct omap_mux_partition *omap_mux_get(const char *name); | |
284 | ||
d4bb72e5 TL |
285 | /** |
286 | * omap_mux_read() - read mux register | |
112485e9 | 287 | * @partition: Mux partition |
d4bb72e5 TL |
288 | * @mux_offset: Offset of the mux register |
289 | * | |
290 | */ | |
112485e9 | 291 | u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset); |
d4bb72e5 TL |
292 | |
293 | /** | |
294 | * omap_mux_write() - write mux register | |
112485e9 | 295 | * @partition: Mux partition |
d4bb72e5 TL |
296 | * @val: New mux register value |
297 | * @mux_offset: Offset of the mux register | |
298 | * | |
299 | * This should be only needed for dynamic remuxing of non-gpio signals. | |
300 | */ | |
112485e9 | 301 | void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset); |
d4bb72e5 TL |
302 | |
303 | /** | |
304 | * omap_mux_write_array() - write an array of mux registers | |
112485e9 | 305 | * @partition: Mux partition |
d4bb72e5 TL |
306 | * @board_mux: Array of mux registers terminated by MAP_MUX_TERMINATOR |
307 | * | |
308 | * This should be only needed for dynamic remuxing of non-gpio signals. | |
309 | */ | |
112485e9 BC |
310 | void omap_mux_write_array(struct omap_mux_partition *p, |
311 | struct omap_board_mux *board_mux); | |
d4bb72e5 | 312 | |
fc440461 TL |
313 | /** |
314 | * omap2420_mux_init() - initialize mux system with board specific set | |
315 | * @board_mux: Board specific mux table | |
316 | * @flags: OMAP package type used for the board | |
317 | */ | |
318 | int omap2420_mux_init(struct omap_board_mux *board_mux, int flags); | |
319 | ||
89ba1092 TL |
320 | /** |
321 | * omap2430_mux_init() - initialize mux system with board specific set | |
322 | * @board_mux: Board specific mux table | |
323 | * @flags: OMAP package type used for the board | |
324 | */ | |
325 | int omap2430_mux_init(struct omap_board_mux *board_mux, int flags); | |
326 | ||
15ac7afe TL |
327 | /** |
328 | * omap3_mux_init() - initialize mux system with board specific set | |
329 | * @board_mux: Board specific mux table | |
330 | * @flags: OMAP package type used for the board | |
331 | */ | |
332 | int omap3_mux_init(struct omap_board_mux *board_mux, int flags); | |
333 | ||
a041a52c BC |
334 | /** |
335 | * omap4_mux_init() - initialize mux system with board specific set | |
21a42c92 CC |
336 | * @board_subset: Board specific mux table |
337 | * @board_wkup_subset: Board specific mux table for wakeup instance | |
a041a52c BC |
338 | * @flags: OMAP package type used for the board |
339 | */ | |
21a42c92 CC |
340 | int omap4_mux_init(struct omap_board_mux *board_subset, |
341 | struct omap_board_mux *board_wkup_subset, int flags); | |
a041a52c | 342 | |
15ac7afe TL |
343 | /** |
344 | * omap_mux_init - private mux init function, do not call | |
345 | */ | |
112485e9 BC |
346 | int omap_mux_init(const char *name, u32 flags, |
347 | u32 mux_pbase, u32 mux_size, | |
348 | struct omap_mux *superset, | |
349 | struct omap_mux *package_subset, | |
350 | struct omap_board_mux *board_mux, | |
351 | struct omap_ball *package_balls); | |
352 |