2 * Copyright (C) 2009 Nokia
3 * Copyright (C) 2009-2010 Texas Instruments
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.
15 #define OMAP_MUX_TERMINATOR 0xffff
17 /* 34xx mux mode options for each pin. See TRM for options */
18 #define OMAP_MUX_MODE0 0
19 #define OMAP_MUX_MODE1 1
20 #define OMAP_MUX_MODE2 2
21 #define OMAP_MUX_MODE3 3
22 #define OMAP_MUX_MODE4 4
23 #define OMAP_MUX_MODE5 5
24 #define OMAP_MUX_MODE6 6
25 #define OMAP_MUX_MODE7 7
27 /* 24xx/34xx mux bit defines */
28 #define OMAP_PULL_ENA (1 << 3)
29 #define OMAP_PULL_UP (1 << 4)
30 #define OMAP_ALTELECTRICALSEL (1 << 5)
32 /* 34xx specific mux bit defines */
33 #define OMAP_INPUT_EN (1 << 8)
34 #define OMAP_OFF_EN (1 << 9)
35 #define OMAP_OFFOUT_EN (1 << 10)
36 #define OMAP_OFFOUT_VAL (1 << 11)
37 #define OMAP_OFF_PULL_EN (1 << 12)
38 #define OMAP_OFF_PULL_UP (1 << 13)
39 #define OMAP_WAKEUP_EN (1 << 14)
41 /* 44xx specific mux bit defines */
42 #define OMAP_WAKEUP_EVENT (1 << 15)
44 /* Active pin states */
45 #define OMAP_PIN_OUTPUT 0
46 #define OMAP_PIN_INPUT OMAP_INPUT_EN
47 #define OMAP_PIN_INPUT_PULLUP (OMAP_PULL_ENA | OMAP_INPUT_EN \
49 #define OMAP_PIN_INPUT_PULLDOWN (OMAP_PULL_ENA | OMAP_INPUT_EN)
52 #define OMAP_PIN_OFF_NONE 0
53 #define OMAP_PIN_OFF_OUTPUT_HIGH (OMAP_OFF_EN | OMAP_OFFOUT_EN \
55 #define OMAP_PIN_OFF_OUTPUT_LOW (OMAP_OFF_EN | OMAP_OFFOUT_EN)
56 #define OMAP_PIN_OFF_INPUT_PULLUP (OMAP_OFF_EN | OMAP_OFF_PULL_EN \
58 #define OMAP_PIN_OFF_INPUT_PULLDOWN (OMAP_OFF_EN | OMAP_OFF_PULL_EN)
59 #define OMAP_PIN_OFF_WAKEUPENABLE OMAP_WAKEUP_EN
61 #define OMAP_MODE_GPIO(x) (((x) & OMAP_MUX_MODE7) == OMAP_MUX_MODE4)
63 /* Flags for omapX_mux_init */
64 #define OMAP_PACKAGE_MASK 0xffff
65 #define OMAP_PACKAGE_CBS 8 /* 547-pin 0.40 0.40 */
66 #define OMAP_PACKAGE_CBL 7 /* 547-pin 0.40 0.40 */
67 #define OMAP_PACKAGE_CBP 6 /* 515-pin 0.40 0.50 */
68 #define OMAP_PACKAGE_CUS 5 /* 423-pin 0.65 */
69 #define OMAP_PACKAGE_CBB 4 /* 515-pin 0.40 0.50 */
70 #define OMAP_PACKAGE_CBC 3 /* 515-pin 0.50 0.65 */
71 #define OMAP_PACKAGE_ZAC 2 /* 24xx 447-pin POP */
72 #define OMAP_PACKAGE_ZAF 1 /* 2420 447-pin SIP */
75 #define OMAP_MUX_NR_MODES 8 /* Available modes */
76 #define OMAP_MUX_NR_SIDES 2 /* Bottom & top */
79 * omap_mux_init flags definition:
81 * OMAP_MUX_REG_8BIT: Ensure that access to padconf is done in 8 bits.
82 * The default value is 16 bits.
83 * OMAP_MUX_GPIO_IN_MODE3: The GPIO is selected in mode3.
84 * The default is mode4.
86 #define OMAP_MUX_REG_8BIT (1 << 0)
87 #define OMAP_MUX_GPIO_IN_MODE3 (1 << 1)
90 * struct mux_partition - contain partition related information
91 * @name: name of the current partition
92 * @flags: flags specific to this partition
93 * @phys: physical address
94 * @size: partition size
95 * @base: virtual address after ioremap
96 * @muxmodes: list of nodes that belong to a partition
97 * @node: list node for the partitions linked list
99 struct omap_mux_partition {
105 struct list_head muxmodes;
106 struct list_head node;
110 * struct omap_mux - data for omap mux register offset and it's value
111 * @reg_offset: mux register offset from the mux base
113 * @muxnames: available signal modes for a ball
114 * @balls: available balls on the package
115 * @partition: mux partition
120 #ifdef CONFIG_OMAP_MUX
121 char *muxnames[OMAP_MUX_NR_MODES];
122 #ifdef CONFIG_DEBUG_FS
123 char *balls[OMAP_MUX_NR_SIDES];
129 * struct omap_ball - data for balls on omap package
130 * @reg_offset: mux register offset from the mux base
131 * @balls: available balls on the package
135 char *balls[OMAP_MUX_NR_SIDES];
139 * struct omap_board_mux - data for initializing mux registers
140 * @reg_offset: mux register offset from the mux base
141 * @mux_value: desired mux value to set
143 struct omap_board_mux {
148 #define OMAP_DEVICE_PAD_ENABLED BIT(7) /* Not needed for board-*.c */
149 #define OMAP_DEVICE_PAD_REMUX BIT(1) /* Dynamically remux a pad,
150 needs enable, idle and off
152 #define OMAP_DEVICE_PAD_WAKEUP BIT(0) /* Pad is wake-up capable */
155 * struct omap_device_pad - device specific pad configuration
157 * @flags: pad specific runtime flags
158 * @enable: runtime value for a pad
159 * @idle: idle value for a pad
160 * @off: off value for a pad, defaults to safe mode
161 * @partition: mux partition
164 struct omap_device_pad {
170 struct omap_mux_partition *partition;
171 struct omap_mux *mux;
174 struct omap_hwmod_mux_info;
176 #if defined(CONFIG_OMAP_MUX)
179 * omap_mux_init_gpio - initialize a signal based on the GPIO number
181 * @val: Options for the mux register value
183 int omap_mux_init_gpio(int gpio, int val);
186 * omap_mux_init_signal - initialize a signal based on the signal name
187 * @muxname: Mux name in mode0_name.signal_name format
188 * @val: Options for the mux register value
190 int omap_mux_init_signal(const char *muxname, int val);
193 * omap_hwmod_mux_init - initialize hwmod specific mux data
194 * @bpads: Board specific device signal names
195 * @nr_pads: Number of signal names for the device
197 extern struct omap_hwmod_mux_info *
198 omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads);
201 * omap_hwmod_mux - omap hwmod specific pin muxing
202 * @hmux: Pads for a hwmod
203 * @state: Desired _HWMOD_STATE
205 * Called only from omap_hwmod.c, do not use.
207 void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state);
211 static inline int omap_mux_init_gpio(int gpio, int val)
215 static inline int omap_mux_init_signal(char *muxname, int val)
220 static inline struct omap_hwmod_mux_info *
221 omap_hwmod_mux_init(struct omap_device_pad *bpads, int nr_pads)
226 static inline void omap_hwmod_mux(struct omap_hwmod_mux_info *hmux, u8 state)
230 static struct omap_board_mux *board_mux __initdata __maybe_unused;
235 * omap_mux_get_gpio() - get mux register value based on GPIO number
239 u16 omap_mux_get_gpio(int gpio);
242 * omap_mux_set_gpio() - set mux register value based on GPIO number
243 * @val: New mux register value
247 void omap_mux_set_gpio(u16 val, int gpio);
250 * omap_mux_get() - get a mux partition by name
251 * @name: Name of the mux partition
254 struct omap_mux_partition *omap_mux_get(const char *name);
257 * omap_mux_read() - read mux register
258 * @partition: Mux partition
259 * @mux_offset: Offset of the mux register
262 u16 omap_mux_read(struct omap_mux_partition *p, u16 mux_offset);
265 * omap_mux_write() - write mux register
266 * @partition: Mux partition
267 * @val: New mux register value
268 * @mux_offset: Offset of the mux register
270 * This should be only needed for dynamic remuxing of non-gpio signals.
272 void omap_mux_write(struct omap_mux_partition *p, u16 val, u16 mux_offset);
275 * omap_mux_write_array() - write an array of mux registers
276 * @partition: Mux partition
277 * @board_mux: Array of mux registers terminated by MAP_MUX_TERMINATOR
279 * This should be only needed for dynamic remuxing of non-gpio signals.
281 void omap_mux_write_array(struct omap_mux_partition *p,
282 struct omap_board_mux *board_mux);
285 * omap2420_mux_init() - initialize mux system with board specific set
286 * @board_mux: Board specific mux table
287 * @flags: OMAP package type used for the board
289 int omap2420_mux_init(struct omap_board_mux *board_mux, int flags);
292 * omap2430_mux_init() - initialize mux system with board specific set
293 * @board_mux: Board specific mux table
294 * @flags: OMAP package type used for the board
296 int omap2430_mux_init(struct omap_board_mux *board_mux, int flags);
299 * omap3_mux_init() - initialize mux system with board specific set
300 * @board_mux: Board specific mux table
301 * @flags: OMAP package type used for the board
303 int omap3_mux_init(struct omap_board_mux *board_mux, int flags);
306 * omap4_mux_init() - initialize mux system with board specific set
307 * @board_mux: Board specific mux table
308 * @flags: OMAP package type used for the board
310 int omap4_mux_init(struct omap_board_mux *board_mux, int flags);
313 * omap_mux_init - private mux init function, do not call
315 int omap_mux_init(const char *name, u32 flags,
316 u32 mux_pbase, u32 mux_size,
317 struct omap_mux *superset,
318 struct omap_mux *package_subset,
319 struct omap_board_mux *board_mux,
320 struct omap_ball *package_balls);