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1 | #include <stdlib.h> |
2 | #include <string.h> |
3 | |
4 | #include "../common/common.h" |
5 | #include "../common/input.h" |
6 | #include "in_gp2x.h" |
7 | |
8 | #define IN_PREFIX "gp2x:" |
9 | #define IN_GP2X_NBUTTONS 32 |
10 | |
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11 | /* note: in_gp2x hadles combos (if 2 btns have the same bind, |
12 | * both must be pressed for action to happen) */ |
13 | static int in_gp2x_combo_keys = 0; |
14 | static int in_gp2x_combo_acts = 0; |
15 | |
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16 | extern volatile unsigned short *gp2x_memregs; /* from minimal library rlyeh */ |
17 | |
18 | enum { BTN_UP = 0, BTN_LEFT = 2, BTN_DOWN = 4, BTN_RIGHT = 6, |
19 | BTN_START = 8, BTN_SELECT = 9, BTN_L = 10, BTN_R = 11, |
20 | BTN_A = 12, BTN_B = 13, BTN_X = 14, BTN_Y = 15, |
21 | BTN_VOL_UP = 23, BTN_VOL_DOWN = 22, BTN_PUSH = 27 }; |
22 | |
23 | static const char * const in_gp2x_prefix = IN_PREFIX; |
24 | static const char * const in_gp2x_keys[IN_GP2X_NBUTTONS] = { |
25 | [0 ... IN_GP2X_NBUTTONS-1] = NULL, |
26 | [BTN_UP] = "UP", [BTN_LEFT] = "LEFT", [BTN_DOWN] = "DOWN", [BTN_RIGHT] = "RIGHT", |
27 | [BTN_START] = "START", [BTN_SELECT] = "SELECT", [BTN_L] = "L", [BTN_R] = "R", |
28 | [BTN_A] = "A", [BTN_B] = "B", [BTN_X] = "X", [BTN_Y] = "Y", |
29 | [BTN_VOL_DOWN]= "VOL DOWN", [BTN_VOL_UP] = "VOL UP", |
30 | [BTN_PUSH] = "PUSH" |
31 | }; |
32 | |
33 | |
34 | static void in_gp2x_probe(void) |
35 | { |
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36 | in_register(IN_PREFIX "GP2X pad", IN_DRVID_GP2X, -1, (void *)1, 1); |
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37 | } |
38 | |
39 | static int in_gp2x_get_bind_count(void) |
40 | { |
41 | return IN_GP2X_NBUTTONS; |
42 | } |
43 | |
44 | static int in_gp2x_get_gpio_bits(void) |
45 | { |
46 | #ifndef FAKE_IN_GP2X |
47 | int value; |
48 | value = gp2x_memregs[0x1198>>1] & 0xff; // GPIO M |
49 | if (value == 0xFD) value = 0xFA; |
50 | if (value == 0xF7) value = 0xEB; |
51 | if (value == 0xDF) value = 0xAF; |
52 | if (value == 0x7F) value = 0xBE; |
53 | value |= gp2x_memregs[0x1184>>1] & 0xFF00; // GPIO C |
54 | value |= gp2x_memregs[0x1186>>1] << 16; // GPIO D |
55 | value = ~value & 0x08c0ff55; |
56 | |
57 | return value; |
58 | #else |
59 | extern int current_keys; |
60 | return current_keys; |
61 | #endif |
62 | } |
63 | |
64 | /* returns bitfield of binds of pressed buttons */ |
65 | int in_gp2x_update(void *drv_data, int *binds) |
66 | { |
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67 | int i, keys, ret = 0; |
68 | |
69 | keys = in_gp2x_get_gpio_bits(); |
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70 | |
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71 | if (keys & in_gp2x_combo_keys) |
72 | return in_combos_do(keys, binds, BTN_PUSH, in_gp2x_combo_keys, in_gp2x_combo_acts); |
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73 | |
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74 | for (i = 0; keys; i++) { |
75 | if (keys & 1) |
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76 | ret |= binds[i]; |
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77 | keys >>= 1; |
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78 | } |
79 | |
80 | return ret; |
81 | } |
82 | |
83 | int in_gp2x_update_keycode(void *data, int *is_down) |
84 | { |
85 | static int old_val = 0; |
86 | int val, diff, i; |
87 | |
88 | val = in_gp2x_get_gpio_bits(); |
89 | diff = val ^ old_val; |
90 | if (diff == 0) |
91 | return -1; |
92 | |
93 | /* take one bit only */ |
94 | for (i = 0; i < sizeof(diff)*8; i++) |
95 | if (diff & (1<<i)) |
96 | break; |
97 | |
98 | old_val ^= 1 << i; |
99 | |
100 | if (is_down) |
101 | *is_down = !!(val & (1<<i)); |
102 | return i; |
103 | } |
104 | |
105 | static int in_gp2x_menu_translate(int keycode) |
106 | { |
107 | switch (keycode) { |
108 | case BTN_UP: return PBTN_UP; |
109 | case BTN_LEFT: return PBTN_LEFT; |
110 | case BTN_DOWN: return PBTN_DOWN; |
111 | case BTN_RIGHT: return PBTN_RIGHT; |
112 | case BTN_B: return PBTN_MOK; |
113 | case BTN_X: return PBTN_MBACK; |
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114 | case BTN_SELECT:return PBTN_MENU; |
115 | case BTN_L: return PBTN_L; |
116 | case BTN_R: return PBTN_R; |
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117 | default: return 0; |
118 | } |
119 | } |
120 | |
121 | static int in_gp2x_get_key_code(const char *key_name) |
122 | { |
123 | int i; |
124 | |
125 | for (i = 0; i < IN_GP2X_NBUTTONS; i++) { |
126 | const char *k = in_gp2x_keys[i]; |
127 | if (k != NULL && strcasecmp(k, key_name) == 0) |
128 | return i; |
129 | } |
130 | |
131 | return -1; |
132 | } |
133 | |
134 | static const char *in_gp2x_get_key_name(int keycode) |
135 | { |
136 | const char *name = NULL; |
137 | if (keycode >= 0 && keycode < IN_GP2X_NBUTTONS) |
138 | name = in_gp2x_keys[keycode]; |
139 | if (name == NULL) |
140 | name = "Unkn"; |
141 | |
142 | return name; |
143 | } |
144 | |
145 | static const struct { |
146 | short code; |
147 | short bit; |
148 | } in_gp2x_def_binds[] = |
149 | { |
150 | /* MXYZ SACB RLDU */ |
151 | { BTN_UP, 0 }, |
152 | { BTN_DOWN, 1 }, |
153 | { BTN_LEFT, 2 }, |
154 | { BTN_RIGHT, 3 }, |
155 | { BTN_X, 4 }, /* B */ |
156 | { BTN_B, 5 }, /* C */ |
157 | { BTN_A, 6 }, /* A */ |
158 | { BTN_START, 7 }, |
159 | }; |
160 | |
161 | #define DEF_BIND_COUNT (sizeof(in_gp2x_def_binds) / sizeof(in_gp2x_def_binds[0])) |
162 | |
163 | static void in_gp2x_get_def_binds(int *binds) |
164 | { |
165 | int i; |
166 | |
167 | for (i = 0; i < DEF_BIND_COUNT; i++) |
168 | binds[in_gp2x_def_binds[i].code] = 1 << in_gp2x_def_binds[i].bit; |
169 | } |
170 | |
171 | /* remove binds of missing keys, count remaining ones */ |
172 | static int in_gp2x_clean_binds(void *drv_data, int *binds) |
173 | { |
174 | int i, count = 0; |
175 | |
176 | for (i = 0; i < IN_GP2X_NBUTTONS; i++) { |
177 | if (in_gp2x_keys[i] == NULL) |
178 | binds[i] = binds[i + IN_GP2X_NBUTTONS] = 0; |
179 | if (binds[i]) |
180 | count++; |
181 | } |
182 | |
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183 | in_combos_find(binds, BTN_PUSH, &in_gp2x_combo_keys, &in_gp2x_combo_acts); |
184 | |
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185 | return count; |
186 | |
187 | } |
188 | |
189 | void in_gp2x_init(void *vdrv) |
190 | { |
191 | in_drv_t *drv = vdrv; |
192 | |
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193 | in_gp2x_combo_keys = in_gp2x_combo_acts = 0; |
194 | |
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195 | drv->prefix = in_gp2x_prefix; |
196 | drv->probe = in_gp2x_probe; |
197 | drv->get_bind_count = in_gp2x_get_bind_count; |
198 | drv->get_def_binds = in_gp2x_get_def_binds; |
199 | drv->clean_binds = in_gp2x_clean_binds; |
200 | drv->menu_translate = in_gp2x_menu_translate; |
201 | drv->get_key_code = in_gp2x_get_key_code; |
202 | drv->get_key_name = in_gp2x_get_key_name; |
203 | drv->update_keycode = in_gp2x_update_keycode; |
204 | } |
205 | |