217d08bc |
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 | |
11 | extern volatile unsigned short *gp2x_memregs; /* from minimal library rlyeh */ |
12 | |
13 | enum { BTN_UP = 0, BTN_LEFT = 2, BTN_DOWN = 4, BTN_RIGHT = 6, |
14 | BTN_START = 8, BTN_SELECT = 9, BTN_L = 10, BTN_R = 11, |
15 | BTN_A = 12, BTN_B = 13, BTN_X = 14, BTN_Y = 15, |
16 | BTN_VOL_UP = 23, BTN_VOL_DOWN = 22, BTN_PUSH = 27 }; |
17 | |
18 | static const char * const in_gp2x_prefix = IN_PREFIX; |
19 | static const char * const in_gp2x_keys[IN_GP2X_NBUTTONS] = { |
20 | [0 ... IN_GP2X_NBUTTONS-1] = NULL, |
21 | [BTN_UP] = "UP", [BTN_LEFT] = "LEFT", [BTN_DOWN] = "DOWN", [BTN_RIGHT] = "RIGHT", |
22 | [BTN_START] = "START", [BTN_SELECT] = "SELECT", [BTN_L] = "L", [BTN_R] = "R", |
23 | [BTN_A] = "A", [BTN_B] = "B", [BTN_X] = "X", [BTN_Y] = "Y", |
24 | [BTN_VOL_DOWN]= "VOL DOWN", [BTN_VOL_UP] = "VOL UP", |
25 | [BTN_PUSH] = "PUSH" |
26 | }; |
27 | |
28 | |
29 | static void in_gp2x_probe(void) |
30 | { |
31 | in_register(IN_PREFIX "GP2X pad", IN_DRVID_GP2X, -1, (void *)1); |
32 | } |
33 | |
34 | static int in_gp2x_get_bind_count(void) |
35 | { |
36 | return IN_GP2X_NBUTTONS; |
37 | } |
38 | |
39 | static int in_gp2x_get_gpio_bits(void) |
40 | { |
41 | #ifndef FAKE_IN_GP2X |
42 | int value; |
43 | value = gp2x_memregs[0x1198>>1] & 0xff; // GPIO M |
44 | if (value == 0xFD) value = 0xFA; |
45 | if (value == 0xF7) value = 0xEB; |
46 | if (value == 0xDF) value = 0xAF; |
47 | if (value == 0x7F) value = 0xBE; |
48 | value |= gp2x_memregs[0x1184>>1] & 0xFF00; // GPIO C |
49 | value |= gp2x_memregs[0x1186>>1] << 16; // GPIO D |
50 | value = ~value & 0x08c0ff55; |
51 | |
52 | return value; |
53 | #else |
54 | extern int current_keys; |
55 | return current_keys; |
56 | #endif |
57 | } |
58 | |
59 | /* returns bitfield of binds of pressed buttons */ |
60 | int in_gp2x_update(void *drv_data, int *binds) |
61 | { |
62 | int i, value, ret = 0; |
63 | |
64 | value = in_gp2x_get_gpio_bits(); |
65 | |
66 | for (i = 0; value; i++) { |
67 | if (value & 1) |
68 | ret |= binds[i]; |
69 | value >>= 1; |
70 | } |
71 | |
72 | return ret; |
73 | } |
74 | |
75 | int in_gp2x_update_keycode(void *data, int *is_down) |
76 | { |
77 | static int old_val = 0; |
78 | int val, diff, i; |
79 | |
80 | val = in_gp2x_get_gpio_bits(); |
81 | diff = val ^ old_val; |
82 | if (diff == 0) |
83 | return -1; |
84 | |
85 | /* take one bit only */ |
86 | for (i = 0; i < sizeof(diff)*8; i++) |
87 | if (diff & (1<<i)) |
88 | break; |
89 | |
90 | old_val ^= 1 << i; |
91 | |
92 | if (is_down) |
93 | *is_down = !!(val & (1<<i)); |
94 | return i; |
95 | } |
96 | |
97 | static int in_gp2x_menu_translate(int keycode) |
98 | { |
99 | switch (keycode) { |
100 | case BTN_UP: return PBTN_UP; |
101 | case BTN_LEFT: return PBTN_LEFT; |
102 | case BTN_DOWN: return PBTN_DOWN; |
103 | case BTN_RIGHT: return PBTN_RIGHT; |
104 | case BTN_B: return PBTN_MOK; |
105 | case BTN_X: return PBTN_MBACK; |
713c9224 |
106 | case BTN_SELECT:return PBTN_MENU; |
107 | case BTN_L: return PBTN_L; |
108 | case BTN_R: return PBTN_R; |
217d08bc |
109 | default: return 0; |
110 | } |
111 | } |
112 | |
113 | static int in_gp2x_get_key_code(const char *key_name) |
114 | { |
115 | int i; |
116 | |
117 | for (i = 0; i < IN_GP2X_NBUTTONS; i++) { |
118 | const char *k = in_gp2x_keys[i]; |
119 | if (k != NULL && strcasecmp(k, key_name) == 0) |
120 | return i; |
121 | } |
122 | |
123 | return -1; |
124 | } |
125 | |
126 | static const char *in_gp2x_get_key_name(int keycode) |
127 | { |
128 | const char *name = NULL; |
129 | if (keycode >= 0 && keycode < IN_GP2X_NBUTTONS) |
130 | name = in_gp2x_keys[keycode]; |
131 | if (name == NULL) |
132 | name = "Unkn"; |
133 | |
134 | return name; |
135 | } |
136 | |
137 | static const struct { |
138 | short code; |
139 | short bit; |
140 | } in_gp2x_def_binds[] = |
141 | { |
142 | /* MXYZ SACB RLDU */ |
143 | { BTN_UP, 0 }, |
144 | { BTN_DOWN, 1 }, |
145 | { BTN_LEFT, 2 }, |
146 | { BTN_RIGHT, 3 }, |
147 | { BTN_X, 4 }, /* B */ |
148 | { BTN_B, 5 }, /* C */ |
149 | { BTN_A, 6 }, /* A */ |
150 | { BTN_START, 7 }, |
151 | }; |
152 | |
153 | #define DEF_BIND_COUNT (sizeof(in_gp2x_def_binds) / sizeof(in_gp2x_def_binds[0])) |
154 | |
155 | static void in_gp2x_get_def_binds(int *binds) |
156 | { |
157 | int i; |
158 | |
159 | for (i = 0; i < DEF_BIND_COUNT; i++) |
160 | binds[in_gp2x_def_binds[i].code] = 1 << in_gp2x_def_binds[i].bit; |
161 | } |
162 | |
163 | /* remove binds of missing keys, count remaining ones */ |
164 | static int in_gp2x_clean_binds(void *drv_data, int *binds) |
165 | { |
166 | int i, count = 0; |
167 | |
168 | for (i = 0; i < IN_GP2X_NBUTTONS; i++) { |
169 | if (in_gp2x_keys[i] == NULL) |
170 | binds[i] = binds[i + IN_GP2X_NBUTTONS] = 0; |
171 | if (binds[i]) |
172 | count++; |
173 | } |
174 | |
175 | return count; |
176 | |
177 | } |
178 | |
179 | void in_gp2x_init(void *vdrv) |
180 | { |
181 | in_drv_t *drv = vdrv; |
182 | |
183 | drv->prefix = in_gp2x_prefix; |
184 | drv->probe = in_gp2x_probe; |
185 | drv->get_bind_count = in_gp2x_get_bind_count; |
186 | drv->get_def_binds = in_gp2x_get_def_binds; |
187 | drv->clean_binds = in_gp2x_clean_binds; |
188 | drv->menu_translate = in_gp2x_menu_translate; |
189 | drv->get_key_code = in_gp2x_get_key_code; |
190 | drv->get_key_name = in_gp2x_get_key_name; |
191 | drv->update_keycode = in_gp2x_update_keycode; |
192 | } |
193 | |