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1 | 069de562 | balrog | /*
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2 | 069de562 | balrog | * TI TSC2005 emulator.
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3 | 069de562 | balrog | *
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4 | 069de562 | balrog | * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
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5 | 069de562 | balrog | * Copyright (C) 2008 Nokia Corporation
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6 | 069de562 | balrog | *
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7 | 069de562 | balrog | * This program is free software; you can redistribute it and/or
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8 | 069de562 | balrog | * modify it under the terms of the GNU General Public License as
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9 | 069de562 | balrog | * published by the Free Software Foundation; either version 2 or
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10 | 069de562 | balrog | * (at your option) version 3 of the License.
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11 | 069de562 | balrog | *
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12 | 069de562 | balrog | * This program is distributed in the hope that it will be useful,
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13 | 069de562 | balrog | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | 069de562 | balrog | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | 069de562 | balrog | * GNU General Public License for more details.
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16 | 069de562 | balrog | *
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17 | fad6cb1a | aurel32 | * You should have received a copy of the GNU General Public License along
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18 | fad6cb1a | aurel32 | * with this program; if not, write to the Free Software Foundation, Inc.,
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19 | fad6cb1a | aurel32 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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20 | 069de562 | balrog | */
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21 | 069de562 | balrog | |
22 | 069de562 | balrog | #include "hw.h" |
23 | 069de562 | balrog | #include "qemu-timer.h" |
24 | 069de562 | balrog | #include "console.h" |
25 | b1d8e52e | blueswir1 | #include "devices.h" |
26 | 069de562 | balrog | |
27 | 069de562 | balrog | #define TSC_CUT_RESOLUTION(value, p) ((value) >> (16 - (p ? 12 : 10))) |
28 | 069de562 | balrog | |
29 | bc24a225 | Paul Brook | typedef struct { |
30 | 069de562 | balrog | qemu_irq pint; /* Combination of the nPENIRQ and DAV signals */
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31 | 069de562 | balrog | QEMUTimer *timer; |
32 | 069de562 | balrog | uint16_t model; |
33 | 069de562 | balrog | |
34 | 069de562 | balrog | int x, y;
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35 | 069de562 | balrog | int pressure;
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36 | 069de562 | balrog | |
37 | 069de562 | balrog | int state, reg, irq, command;
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38 | 069de562 | balrog | uint16_t data, dav; |
39 | 069de562 | balrog | |
40 | 069de562 | balrog | int busy;
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41 | 069de562 | balrog | int enabled;
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42 | 069de562 | balrog | int host_mode;
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43 | 069de562 | balrog | int function;
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44 | 069de562 | balrog | int nextfunction;
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45 | 069de562 | balrog | int precision;
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46 | 069de562 | balrog | int nextprecision;
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47 | 069de562 | balrog | int filter;
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48 | 069de562 | balrog | int pin_func;
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49 | 069de562 | balrog | int timing[2]; |
50 | 069de562 | balrog | int noise;
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51 | 069de562 | balrog | int reset;
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52 | 069de562 | balrog | int pdst;
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53 | 069de562 | balrog | int pnd0;
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54 | 069de562 | balrog | uint16_t temp_thr[2];
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55 | 069de562 | balrog | uint16_t aux_thr[2];
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56 | 069de562 | balrog | |
57 | 069de562 | balrog | int tr[8]; |
58 | bc24a225 | Paul Brook | } TSC2005State; |
59 | 069de562 | balrog | |
60 | 069de562 | balrog | enum {
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61 | 069de562 | balrog | TSC_MODE_XYZ_SCAN = 0x0,
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62 | 069de562 | balrog | TSC_MODE_XY_SCAN, |
63 | 069de562 | balrog | TSC_MODE_X, |
64 | 069de562 | balrog | TSC_MODE_Y, |
65 | 069de562 | balrog | TSC_MODE_Z, |
66 | 069de562 | balrog | TSC_MODE_AUX, |
67 | 069de562 | balrog | TSC_MODE_TEMP1, |
68 | 069de562 | balrog | TSC_MODE_TEMP2, |
69 | 069de562 | balrog | TSC_MODE_AUX_SCAN, |
70 | 069de562 | balrog | TSC_MODE_X_TEST, |
71 | 069de562 | balrog | TSC_MODE_Y_TEST, |
72 | 069de562 | balrog | TSC_MODE_TS_TEST, |
73 | 069de562 | balrog | TSC_MODE_RESERVED, |
74 | 069de562 | balrog | TSC_MODE_XX_DRV, |
75 | 069de562 | balrog | TSC_MODE_YY_DRV, |
76 | 069de562 | balrog | TSC_MODE_YX_DRV, |
77 | 069de562 | balrog | }; |
78 | 069de562 | balrog | |
79 | 069de562 | balrog | static const uint16_t mode_regs[16] = { |
80 | 069de562 | balrog | 0xf000, /* X, Y, Z scan */ |
81 | 069de562 | balrog | 0xc000, /* X, Y scan */ |
82 | 069de562 | balrog | 0x8000, /* X */ |
83 | 069de562 | balrog | 0x4000, /* Y */ |
84 | 069de562 | balrog | 0x3000, /* Z */ |
85 | 069de562 | balrog | 0x0800, /* AUX */ |
86 | 069de562 | balrog | 0x0400, /* TEMP1 */ |
87 | 069de562 | balrog | 0x0200, /* TEMP2 */ |
88 | 069de562 | balrog | 0x0800, /* AUX scan */ |
89 | 069de562 | balrog | 0x0040, /* X test */ |
90 | 069de562 | balrog | 0x0020, /* Y test */ |
91 | 069de562 | balrog | 0x0080, /* Short-circuit test */ |
92 | 069de562 | balrog | 0x0000, /* Reserved */ |
93 | 069de562 | balrog | 0x0000, /* X+, X- drivers */ |
94 | 069de562 | balrog | 0x0000, /* Y+, Y- drivers */ |
95 | 069de562 | balrog | 0x0000, /* Y+, X- drivers */ |
96 | 069de562 | balrog | }; |
97 | 069de562 | balrog | |
98 | 069de562 | balrog | #define X_TRANSFORM(s) \
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99 | 069de562 | balrog | ((s->y * s->tr[0] - s->x * s->tr[1]) / s->tr[2] + s->tr[3]) |
100 | 069de562 | balrog | #define Y_TRANSFORM(s) \
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101 | 069de562 | balrog | ((s->y * s->tr[4] - s->x * s->tr[5]) / s->tr[6] + s->tr[7]) |
102 | 069de562 | balrog | #define Z1_TRANSFORM(s) \
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103 | 069de562 | balrog | ((400 - ((s)->x >> 7) + ((s)->pressure << 10)) << 4) |
104 | 069de562 | balrog | #define Z2_TRANSFORM(s) \
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105 | 069de562 | balrog | ((4000 + ((s)->y >> 7) - ((s)->pressure << 10)) << 4) |
106 | 069de562 | balrog | |
107 | 069de562 | balrog | #define AUX_VAL (700 << 4) /* +/- 3 at 12-bit */ |
108 | 069de562 | balrog | #define TEMP1_VAL (1264 << 4) /* +/- 5 at 12-bit */ |
109 | 069de562 | balrog | #define TEMP2_VAL (1531 << 4) /* +/- 5 at 12-bit */ |
110 | 069de562 | balrog | |
111 | bc24a225 | Paul Brook | static uint16_t tsc2005_read(TSC2005State *s, int reg) |
112 | 069de562 | balrog | { |
113 | 069de562 | balrog | uint16_t ret; |
114 | 069de562 | balrog | |
115 | 069de562 | balrog | switch (reg) {
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116 | 069de562 | balrog | case 0x0: /* X */ |
117 | 069de562 | balrog | s->dav &= ~mode_regs[TSC_MODE_X]; |
118 | 069de562 | balrog | return TSC_CUT_RESOLUTION(X_TRANSFORM(s), s->precision) +
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119 | 069de562 | balrog | (s->noise & 3);
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120 | 069de562 | balrog | case 0x1: /* Y */ |
121 | 069de562 | balrog | s->dav &= ~mode_regs[TSC_MODE_Y]; |
122 | 069de562 | balrog | s->noise ++; |
123 | 069de562 | balrog | return TSC_CUT_RESOLUTION(Y_TRANSFORM(s), s->precision) ^
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124 | 069de562 | balrog | (s->noise & 3);
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125 | 069de562 | balrog | case 0x2: /* Z1 */ |
126 | 069de562 | balrog | s->dav &= 0xdfff;
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127 | 069de562 | balrog | return TSC_CUT_RESOLUTION(Z1_TRANSFORM(s), s->precision) -
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128 | 069de562 | balrog | (s->noise & 3);
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129 | 069de562 | balrog | case 0x3: /* Z2 */ |
130 | 069de562 | balrog | s->dav &= 0xefff;
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131 | 069de562 | balrog | return TSC_CUT_RESOLUTION(Z2_TRANSFORM(s), s->precision) |
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132 | 069de562 | balrog | (s->noise & 3);
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133 | 069de562 | balrog | |
134 | 069de562 | balrog | case 0x4: /* AUX */ |
135 | 069de562 | balrog | s->dav &= ~mode_regs[TSC_MODE_AUX]; |
136 | 069de562 | balrog | return TSC_CUT_RESOLUTION(AUX_VAL, s->precision);
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137 | 069de562 | balrog | |
138 | 069de562 | balrog | case 0x5: /* TEMP1 */ |
139 | 069de562 | balrog | s->dav &= ~mode_regs[TSC_MODE_TEMP1]; |
140 | 069de562 | balrog | return TSC_CUT_RESOLUTION(TEMP1_VAL, s->precision) -
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141 | 069de562 | balrog | (s->noise & 5);
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142 | 069de562 | balrog | case 0x6: /* TEMP2 */ |
143 | 069de562 | balrog | s->dav &= 0xdfff;
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144 | 069de562 | balrog | s->dav &= ~mode_regs[TSC_MODE_TEMP2]; |
145 | 069de562 | balrog | return TSC_CUT_RESOLUTION(TEMP2_VAL, s->precision) ^
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146 | 069de562 | balrog | (s->noise & 3);
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147 | 069de562 | balrog | |
148 | 069de562 | balrog | case 0x7: /* Status */ |
149 | 069de562 | balrog | ret = s->dav | (s->reset << 7) | (s->pdst << 2) | 0x0; |
150 | 069de562 | balrog | s->dav &= ~(mode_regs[TSC_MODE_X_TEST] | mode_regs[TSC_MODE_Y_TEST] | |
151 | 069de562 | balrog | mode_regs[TSC_MODE_TS_TEST]); |
152 | 069de562 | balrog | s->reset = 1;
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153 | 069de562 | balrog | return ret;
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154 | 069de562 | balrog | |
155 | 069de562 | balrog | case 0x8: /* AUX high treshold */ |
156 | 069de562 | balrog | return s->aux_thr[1]; |
157 | 069de562 | balrog | case 0x9: /* AUX low treshold */ |
158 | 069de562 | balrog | return s->aux_thr[0]; |
159 | 069de562 | balrog | |
160 | 069de562 | balrog | case 0xa: /* TEMP high treshold */ |
161 | 069de562 | balrog | return s->temp_thr[1]; |
162 | 069de562 | balrog | case 0xb: /* TEMP low treshold */ |
163 | 069de562 | balrog | return s->temp_thr[0]; |
164 | 069de562 | balrog | |
165 | 069de562 | balrog | case 0xc: /* CFR0 */ |
166 | 069de562 | balrog | return (s->pressure << 15) | ((!s->busy) << 14) | |
167 | 069de562 | balrog | (s->nextprecision << 13) | s->timing[0]; |
168 | 069de562 | balrog | case 0xd: /* CFR1 */ |
169 | 069de562 | balrog | return s->timing[1]; |
170 | 069de562 | balrog | case 0xe: /* CFR2 */ |
171 | 069de562 | balrog | return (s->pin_func << 14) | s->filter; |
172 | 069de562 | balrog | |
173 | 069de562 | balrog | case 0xf: /* Function select status */ |
174 | 069de562 | balrog | return s->function >= 0 ? 1 << s->function : 0; |
175 | 069de562 | balrog | } |
176 | 069de562 | balrog | |
177 | 069de562 | balrog | /* Never gets here */
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178 | 069de562 | balrog | return 0xffff; |
179 | 069de562 | balrog | } |
180 | 069de562 | balrog | |
181 | bc24a225 | Paul Brook | static void tsc2005_write(TSC2005State *s, int reg, uint16_t data) |
182 | 069de562 | balrog | { |
183 | 069de562 | balrog | switch (reg) {
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184 | 069de562 | balrog | case 0x8: /* AUX high treshold */ |
185 | 069de562 | balrog | s->aux_thr[1] = data;
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186 | 069de562 | balrog | break;
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187 | 069de562 | balrog | case 0x9: /* AUX low treshold */ |
188 | 069de562 | balrog | s->aux_thr[0] = data;
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189 | 069de562 | balrog | break;
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190 | 069de562 | balrog | |
191 | 069de562 | balrog | case 0xa: /* TEMP high treshold */ |
192 | 069de562 | balrog | s->temp_thr[1] = data;
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193 | 069de562 | balrog | break;
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194 | 069de562 | balrog | case 0xb: /* TEMP low treshold */ |
195 | 069de562 | balrog | s->temp_thr[0] = data;
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196 | 069de562 | balrog | break;
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197 | 069de562 | balrog | |
198 | 069de562 | balrog | case 0xc: /* CFR0 */ |
199 | 069de562 | balrog | s->host_mode = data >> 15;
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200 | 0941041e | balrog | if (s->enabled != !(data & 0x4000)) { |
201 | 0941041e | balrog | s->enabled = !(data & 0x4000);
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202 | 0941041e | balrog | fprintf(stderr, "%s: touchscreen sense %sabled\n",
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203 | 0941041e | balrog | __FUNCTION__, s->enabled ? "en" : "dis"); |
204 | 0941041e | balrog | if (s->busy && !s->enabled)
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205 | 0941041e | balrog | qemu_del_timer(s->timer); |
206 | 0941041e | balrog | s->busy &= s->enabled; |
207 | 0941041e | balrog | } |
208 | 069de562 | balrog | s->nextprecision = (data >> 13) & 1; |
209 | 069de562 | balrog | s->timing[0] = data & 0x1fff; |
210 | 069de562 | balrog | if ((s->timing[0] >> 11) == 3) |
211 | 069de562 | balrog | fprintf(stderr, "%s: illegal conversion clock setting\n",
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212 | 069de562 | balrog | __FUNCTION__); |
213 | 069de562 | balrog | break;
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214 | 069de562 | balrog | case 0xd: /* CFR1 */ |
215 | 069de562 | balrog | s->timing[1] = data & 0xf07; |
216 | 069de562 | balrog | break;
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217 | 069de562 | balrog | case 0xe: /* CFR2 */ |
218 | 069de562 | balrog | s->pin_func = (data >> 14) & 3; |
219 | 069de562 | balrog | s->filter = data & 0x3fff;
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220 | 069de562 | balrog | break;
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221 | 069de562 | balrog | |
222 | 069de562 | balrog | default:
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223 | 069de562 | balrog | fprintf(stderr, "%s: write into read-only register %x\n",
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224 | 069de562 | balrog | __FUNCTION__, reg); |
225 | 069de562 | balrog | } |
226 | 069de562 | balrog | } |
227 | 069de562 | balrog | |
228 | 069de562 | balrog | /* This handles most of the chip's logic. */
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229 | bc24a225 | Paul Brook | static void tsc2005_pin_update(TSC2005State *s) |
230 | 069de562 | balrog | { |
231 | 069de562 | balrog | int64_t expires; |
232 | 069de562 | balrog | int pin_state;
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233 | 069de562 | balrog | |
234 | 069de562 | balrog | switch (s->pin_func) {
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235 | 069de562 | balrog | case 0: |
236 | 069de562 | balrog | pin_state = !s->pressure && !!s->dav; |
237 | 069de562 | balrog | break;
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238 | 069de562 | balrog | case 1: |
239 | 069de562 | balrog | case 3: |
240 | 069de562 | balrog | default:
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241 | 069de562 | balrog | pin_state = !s->dav; |
242 | 069de562 | balrog | break;
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243 | 069de562 | balrog | case 2: |
244 | 069de562 | balrog | pin_state = !s->pressure; |
245 | 069de562 | balrog | } |
246 | 069de562 | balrog | |
247 | 069de562 | balrog | if (pin_state != s->irq) {
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248 | 069de562 | balrog | s->irq = pin_state; |
249 | 069de562 | balrog | qemu_set_irq(s->pint, s->irq); |
250 | 069de562 | balrog | } |
251 | 069de562 | balrog | |
252 | 069de562 | balrog | switch (s->nextfunction) {
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253 | 069de562 | balrog | case TSC_MODE_XYZ_SCAN:
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254 | 069de562 | balrog | case TSC_MODE_XY_SCAN:
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255 | e62ab7a1 | balrog | if (!s->host_mode && s->dav)
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256 | e62ab7a1 | balrog | s->enabled = 0;
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257 | 069de562 | balrog | if (!s->pressure)
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258 | 069de562 | balrog | return;
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259 | 069de562 | balrog | /* Fall through */
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260 | 069de562 | balrog | case TSC_MODE_AUX_SCAN:
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261 | 069de562 | balrog | break;
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262 | 069de562 | balrog | |
263 | 069de562 | balrog | case TSC_MODE_X:
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264 | 069de562 | balrog | case TSC_MODE_Y:
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265 | 069de562 | balrog | case TSC_MODE_Z:
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266 | 069de562 | balrog | if (!s->pressure)
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267 | 069de562 | balrog | return;
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268 | 069de562 | balrog | /* Fall through */
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269 | 069de562 | balrog | case TSC_MODE_AUX:
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270 | 069de562 | balrog | case TSC_MODE_TEMP1:
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271 | 069de562 | balrog | case TSC_MODE_TEMP2:
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272 | 069de562 | balrog | case TSC_MODE_X_TEST:
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273 | 069de562 | balrog | case TSC_MODE_Y_TEST:
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274 | 069de562 | balrog | case TSC_MODE_TS_TEST:
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275 | 069de562 | balrog | if (s->dav)
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276 | 069de562 | balrog | s->enabled = 0;
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277 | 069de562 | balrog | break;
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278 | 069de562 | balrog | |
279 | 069de562 | balrog | case TSC_MODE_RESERVED:
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280 | 069de562 | balrog | case TSC_MODE_XX_DRV:
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281 | 069de562 | balrog | case TSC_MODE_YY_DRV:
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282 | 069de562 | balrog | case TSC_MODE_YX_DRV:
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283 | 069de562 | balrog | default:
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284 | 069de562 | balrog | return;
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285 | 069de562 | balrog | } |
286 | 069de562 | balrog | |
287 | 069de562 | balrog | if (!s->enabled || s->busy)
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288 | 069de562 | balrog | return;
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289 | 069de562 | balrog | |
290 | 069de562 | balrog | s->busy = 1;
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291 | 069de562 | balrog | s->precision = s->nextprecision; |
292 | 069de562 | balrog | s->function = s->nextfunction; |
293 | 069de562 | balrog | s->pdst = !s->pnd0; /* Synchronised on internal clock */
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294 | 069de562 | balrog | expires = qemu_get_clock(vm_clock) + (ticks_per_sec >> 7);
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295 | 069de562 | balrog | qemu_mod_timer(s->timer, expires); |
296 | 069de562 | balrog | } |
297 | 069de562 | balrog | |
298 | bc24a225 | Paul Brook | static void tsc2005_reset(TSC2005State *s) |
299 | 069de562 | balrog | { |
300 | 069de562 | balrog | s->state = 0;
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301 | 069de562 | balrog | s->pin_func = 0;
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302 | 069de562 | balrog | s->enabled = 0;
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303 | 069de562 | balrog | s->busy = 0;
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304 | 069de562 | balrog | s->nextprecision = 0;
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305 | 069de562 | balrog | s->nextfunction = 0;
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306 | 069de562 | balrog | s->timing[0] = 0; |
307 | 069de562 | balrog | s->timing[1] = 0; |
308 | 069de562 | balrog | s->irq = 0;
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309 | 069de562 | balrog | s->dav = 0;
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310 | 069de562 | balrog | s->reset = 0;
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311 | 069de562 | balrog | s->pdst = 1;
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312 | 069de562 | balrog | s->pnd0 = 0;
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313 | 069de562 | balrog | s->function = -1;
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314 | 069de562 | balrog | s->temp_thr[0] = 0x000; |
315 | 069de562 | balrog | s->temp_thr[1] = 0xfff; |
316 | 069de562 | balrog | s->aux_thr[0] = 0x000; |
317 | 069de562 | balrog | s->aux_thr[1] = 0xfff; |
318 | 069de562 | balrog | |
319 | 069de562 | balrog | tsc2005_pin_update(s); |
320 | 069de562 | balrog | } |
321 | 069de562 | balrog | |
322 | b1d8e52e | blueswir1 | static uint8_t tsc2005_txrx_word(void *opaque, uint8_t value) |
323 | 069de562 | balrog | { |
324 | bc24a225 | Paul Brook | TSC2005State *s = opaque; |
325 | 069de562 | balrog | uint32_t ret = 0;
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326 | 069de562 | balrog | |
327 | 069de562 | balrog | switch (s->state ++) {
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328 | 069de562 | balrog | case 0: |
329 | 069de562 | balrog | if (value & 0x80) { |
330 | 069de562 | balrog | /* Command */
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331 | 069de562 | balrog | if (value & (1 << 1)) |
332 | 069de562 | balrog | tsc2005_reset(s); |
333 | 069de562 | balrog | else {
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334 | 069de562 | balrog | s->nextfunction = (value >> 3) & 0xf; |
335 | 069de562 | balrog | s->nextprecision = (value >> 2) & 1; |
336 | 069de562 | balrog | if (s->enabled != !(value & 1)) { |
337 | 069de562 | balrog | s->enabled = !(value & 1);
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338 | 069de562 | balrog | fprintf(stderr, "%s: touchscreen sense %sabled\n",
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339 | 069de562 | balrog | __FUNCTION__, s->enabled ? "en" : "dis"); |
340 | e62ab7a1 | balrog | if (s->busy && !s->enabled)
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341 | e62ab7a1 | balrog | qemu_del_timer(s->timer); |
342 | e62ab7a1 | balrog | s->busy &= s->enabled; |
343 | 069de562 | balrog | } |
344 | 069de562 | balrog | tsc2005_pin_update(s); |
345 | 069de562 | balrog | } |
346 | 069de562 | balrog | |
347 | 069de562 | balrog | s->state = 0;
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348 | 069de562 | balrog | } else if (value) { |
349 | 069de562 | balrog | /* Data transfer */
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350 | 069de562 | balrog | s->reg = (value >> 3) & 0xf; |
351 | 069de562 | balrog | s->pnd0 = (value >> 1) & 1; |
352 | 069de562 | balrog | s->command = value & 1;
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353 | 069de562 | balrog | |
354 | 069de562 | balrog | if (s->command) {
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355 | 069de562 | balrog | /* Read */
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356 | 069de562 | balrog | s->data = tsc2005_read(s, s->reg); |
357 | 069de562 | balrog | tsc2005_pin_update(s); |
358 | 069de562 | balrog | } else
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359 | 069de562 | balrog | s->data = 0;
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360 | 069de562 | balrog | } else
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361 | 069de562 | balrog | s->state = 0;
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362 | 069de562 | balrog | break;
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363 | 069de562 | balrog | |
364 | 069de562 | balrog | case 1: |
365 | 069de562 | balrog | if (s->command)
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366 | 069de562 | balrog | ret = (s->data >> 8) & 0xff; |
367 | 069de562 | balrog | else
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368 | 069de562 | balrog | s->data |= value << 8;
|
369 | 069de562 | balrog | break;
|
370 | 069de562 | balrog | |
371 | 069de562 | balrog | case 2: |
372 | 069de562 | balrog | if (s->command)
|
373 | 069de562 | balrog | ret = s->data & 0xff;
|
374 | 069de562 | balrog | else {
|
375 | 069de562 | balrog | s->data |= value; |
376 | 069de562 | balrog | tsc2005_write(s, s->reg, s->data); |
377 | 069de562 | balrog | tsc2005_pin_update(s); |
378 | 069de562 | balrog | } |
379 | 069de562 | balrog | |
380 | 069de562 | balrog | s->state = 0;
|
381 | 069de562 | balrog | break;
|
382 | 069de562 | balrog | } |
383 | 069de562 | balrog | |
384 | 069de562 | balrog | return ret;
|
385 | 069de562 | balrog | } |
386 | 069de562 | balrog | |
387 | 069de562 | balrog | uint32_t tsc2005_txrx(void *opaque, uint32_t value, int len) |
388 | 069de562 | balrog | { |
389 | 069de562 | balrog | uint32_t ret = 0;
|
390 | 069de562 | balrog | |
391 | 069de562 | balrog | len &= ~7;
|
392 | 069de562 | balrog | while (len > 0) { |
393 | 069de562 | balrog | len -= 8;
|
394 | 069de562 | balrog | ret |= tsc2005_txrx_word(opaque, (value >> len) & 0xff) << len;
|
395 | 069de562 | balrog | } |
396 | 069de562 | balrog | |
397 | 069de562 | balrog | return ret;
|
398 | 069de562 | balrog | } |
399 | 069de562 | balrog | |
400 | 069de562 | balrog | static void tsc2005_timer_tick(void *opaque) |
401 | 069de562 | balrog | { |
402 | bc24a225 | Paul Brook | TSC2005State *s = opaque; |
403 | 069de562 | balrog | |
404 | 069de562 | balrog | /* Timer ticked -- a set of conversions has been finished. */
|
405 | 069de562 | balrog | |
406 | 069de562 | balrog | if (!s->busy)
|
407 | 069de562 | balrog | return;
|
408 | 069de562 | balrog | |
409 | 069de562 | balrog | s->busy = 0;
|
410 | 069de562 | balrog | s->dav |= mode_regs[s->function]; |
411 | 069de562 | balrog | s->function = -1;
|
412 | 069de562 | balrog | tsc2005_pin_update(s); |
413 | 069de562 | balrog | } |
414 | 069de562 | balrog | |
415 | 069de562 | balrog | static void tsc2005_touchscreen_event(void *opaque, |
416 | 069de562 | balrog | int x, int y, int z, int buttons_state) |
417 | 069de562 | balrog | { |
418 | bc24a225 | Paul Brook | TSC2005State *s = opaque; |
419 | 069de562 | balrog | int p = s->pressure;
|
420 | 069de562 | balrog | |
421 | 069de562 | balrog | if (buttons_state) {
|
422 | 069de562 | balrog | s->x = x; |
423 | 069de562 | balrog | s->y = y; |
424 | 069de562 | balrog | } |
425 | 069de562 | balrog | s->pressure = !!buttons_state; |
426 | 069de562 | balrog | |
427 | 069de562 | balrog | /*
|
428 | 069de562 | balrog | * Note: We would get better responsiveness in the guest by
|
429 | 069de562 | balrog | * signaling TS events immediately, but for now we simulate
|
430 | 069de562 | balrog | * the first conversion delay for sake of correctness.
|
431 | 069de562 | balrog | */
|
432 | 069de562 | balrog | if (p != s->pressure)
|
433 | 069de562 | balrog | tsc2005_pin_update(s); |
434 | 069de562 | balrog | } |
435 | 069de562 | balrog | |
436 | 069de562 | balrog | static void tsc2005_save(QEMUFile *f, void *opaque) |
437 | 069de562 | balrog | { |
438 | bc24a225 | Paul Brook | TSC2005State *s = (TSC2005State *) opaque; |
439 | 069de562 | balrog | int i;
|
440 | 069de562 | balrog | |
441 | 069de562 | balrog | qemu_put_be16(f, s->x); |
442 | 069de562 | balrog | qemu_put_be16(f, s->y); |
443 | 069de562 | balrog | qemu_put_byte(f, s->pressure); |
444 | 069de562 | balrog | |
445 | 069de562 | balrog | qemu_put_byte(f, s->state); |
446 | 069de562 | balrog | qemu_put_byte(f, s->reg); |
447 | 069de562 | balrog | qemu_put_byte(f, s->command); |
448 | 069de562 | balrog | |
449 | 069de562 | balrog | qemu_put_byte(f, s->irq); |
450 | 069de562 | balrog | qemu_put_be16s(f, &s->dav); |
451 | 069de562 | balrog | qemu_put_be16s(f, &s->data); |
452 | 069de562 | balrog | |
453 | 069de562 | balrog | qemu_put_timer(f, s->timer); |
454 | 069de562 | balrog | qemu_put_byte(f, s->enabled); |
455 | 069de562 | balrog | qemu_put_byte(f, s->host_mode); |
456 | 069de562 | balrog | qemu_put_byte(f, s->function); |
457 | 069de562 | balrog | qemu_put_byte(f, s->nextfunction); |
458 | 069de562 | balrog | qemu_put_byte(f, s->precision); |
459 | 069de562 | balrog | qemu_put_byte(f, s->nextprecision); |
460 | 069de562 | balrog | qemu_put_be16(f, s->filter); |
461 | 069de562 | balrog | qemu_put_byte(f, s->pin_func); |
462 | 069de562 | balrog | qemu_put_be16(f, s->timing[0]);
|
463 | 069de562 | balrog | qemu_put_be16(f, s->timing[1]);
|
464 | 069de562 | balrog | qemu_put_be16s(f, &s->temp_thr[0]);
|
465 | 069de562 | balrog | qemu_put_be16s(f, &s->temp_thr[1]);
|
466 | 069de562 | balrog | qemu_put_be16s(f, &s->aux_thr[0]);
|
467 | 069de562 | balrog | qemu_put_be16s(f, &s->aux_thr[1]);
|
468 | 069de562 | balrog | qemu_put_be32(f, s->noise); |
469 | 069de562 | balrog | qemu_put_byte(f, s->reset); |
470 | 069de562 | balrog | qemu_put_byte(f, s->pdst); |
471 | 069de562 | balrog | qemu_put_byte(f, s->pnd0); |
472 | 069de562 | balrog | |
473 | 069de562 | balrog | for (i = 0; i < 8; i ++) |
474 | 069de562 | balrog | qemu_put_be32(f, s->tr[i]); |
475 | 069de562 | balrog | } |
476 | 069de562 | balrog | |
477 | 069de562 | balrog | static int tsc2005_load(QEMUFile *f, void *opaque, int version_id) |
478 | 069de562 | balrog | { |
479 | bc24a225 | Paul Brook | TSC2005State *s = (TSC2005State *) opaque; |
480 | 069de562 | balrog | int i;
|
481 | 069de562 | balrog | |
482 | 069de562 | balrog | s->x = qemu_get_be16(f); |
483 | 069de562 | balrog | s->y = qemu_get_be16(f); |
484 | 069de562 | balrog | s->pressure = qemu_get_byte(f); |
485 | 069de562 | balrog | |
486 | 069de562 | balrog | s->state = qemu_get_byte(f); |
487 | 069de562 | balrog | s->reg = qemu_get_byte(f); |
488 | 069de562 | balrog | s->command = qemu_get_byte(f); |
489 | 069de562 | balrog | |
490 | 069de562 | balrog | s->irq = qemu_get_byte(f); |
491 | 069de562 | balrog | qemu_get_be16s(f, &s->dav); |
492 | 069de562 | balrog | qemu_get_be16s(f, &s->data); |
493 | 069de562 | balrog | |
494 | 069de562 | balrog | qemu_get_timer(f, s->timer); |
495 | 069de562 | balrog | s->enabled = qemu_get_byte(f); |
496 | 069de562 | balrog | s->host_mode = qemu_get_byte(f); |
497 | 069de562 | balrog | s->function = qemu_get_byte(f); |
498 | 069de562 | balrog | s->nextfunction = qemu_get_byte(f); |
499 | 069de562 | balrog | s->precision = qemu_get_byte(f); |
500 | 069de562 | balrog | s->nextprecision = qemu_get_byte(f); |
501 | 069de562 | balrog | s->filter = qemu_get_be16(f); |
502 | 069de562 | balrog | s->pin_func = qemu_get_byte(f); |
503 | 069de562 | balrog | s->timing[0] = qemu_get_be16(f);
|
504 | 069de562 | balrog | s->timing[1] = qemu_get_be16(f);
|
505 | 069de562 | balrog | qemu_get_be16s(f, &s->temp_thr[0]);
|
506 | 069de562 | balrog | qemu_get_be16s(f, &s->temp_thr[1]);
|
507 | 069de562 | balrog | qemu_get_be16s(f, &s->aux_thr[0]);
|
508 | 069de562 | balrog | qemu_get_be16s(f, &s->aux_thr[1]);
|
509 | 069de562 | balrog | s->noise = qemu_get_be32(f); |
510 | 069de562 | balrog | s->reset = qemu_get_byte(f); |
511 | 069de562 | balrog | s->pdst = qemu_get_byte(f); |
512 | 069de562 | balrog | s->pnd0 = qemu_get_byte(f); |
513 | 069de562 | balrog | |
514 | 069de562 | balrog | for (i = 0; i < 8; i ++) |
515 | 069de562 | balrog | s->tr[i] = qemu_get_be32(f); |
516 | 069de562 | balrog | |
517 | 069de562 | balrog | s->busy = qemu_timer_pending(s->timer); |
518 | 069de562 | balrog | tsc2005_pin_update(s); |
519 | 069de562 | balrog | |
520 | 069de562 | balrog | return 0; |
521 | 069de562 | balrog | } |
522 | 069de562 | balrog | |
523 | 069de562 | balrog | void *tsc2005_init(qemu_irq pintdav)
|
524 | 069de562 | balrog | { |
525 | bc24a225 | Paul Brook | TSC2005State *s; |
526 | 069de562 | balrog | |
527 | bc24a225 | Paul Brook | s = (TSC2005State *) |
528 | bc24a225 | Paul Brook | qemu_mallocz(sizeof(TSC2005State));
|
529 | 069de562 | balrog | s->x = 400;
|
530 | 069de562 | balrog | s->y = 240;
|
531 | 069de562 | balrog | s->pressure = 0;
|
532 | 069de562 | balrog | s->precision = s->nextprecision = 0;
|
533 | 069de562 | balrog | s->timer = qemu_new_timer(vm_clock, tsc2005_timer_tick, s); |
534 | 069de562 | balrog | s->pint = pintdav; |
535 | 069de562 | balrog | s->model = 0x2005;
|
536 | 069de562 | balrog | |
537 | 069de562 | balrog | s->tr[0] = 0; |
538 | 069de562 | balrog | s->tr[1] = 1; |
539 | 069de562 | balrog | s->tr[2] = 1; |
540 | 069de562 | balrog | s->tr[3] = 0; |
541 | 069de562 | balrog | s->tr[4] = 1; |
542 | 069de562 | balrog | s->tr[5] = 0; |
543 | 069de562 | balrog | s->tr[6] = 1; |
544 | 069de562 | balrog | s->tr[7] = 0; |
545 | 069de562 | balrog | |
546 | 069de562 | balrog | tsc2005_reset(s); |
547 | 069de562 | balrog | |
548 | 069de562 | balrog | qemu_add_mouse_event_handler(tsc2005_touchscreen_event, s, 1,
|
549 | 069de562 | balrog | "QEMU TSC2005-driven Touchscreen");
|
550 | 069de562 | balrog | |
551 | 8217606e | Jan Kiszka | qemu_register_reset((void *) tsc2005_reset, 0, s); |
552 | 18be5187 | pbrook | register_savevm("tsc2005", -1, 0, tsc2005_save, tsc2005_load, s); |
553 | 069de562 | balrog | |
554 | 069de562 | balrog | return s;
|
555 | 069de562 | balrog | } |
556 | 069de562 | balrog | |
557 | 069de562 | balrog | /*
|
558 | 069de562 | balrog | * Use tslib generated calibration data to generate ADC input values
|
559 | 069de562 | balrog | * from the touchscreen. Assuming 12-bit precision was used during
|
560 | 069de562 | balrog | * tslib calibration.
|
561 | 069de562 | balrog | */
|
562 | bc24a225 | Paul Brook | void tsc2005_set_transform(void *opaque, MouseTransformInfo *info) |
563 | 069de562 | balrog | { |
564 | bc24a225 | Paul Brook | TSC2005State *s = (TSC2005State *) opaque; |
565 | 069de562 | balrog | |
566 | 069de562 | balrog | /* This version assumes touchscreen X & Y axis are parallel or
|
567 | 069de562 | balrog | * perpendicular to LCD's X & Y axis in some way. */
|
568 | 069de562 | balrog | if (abs(info->a[0]) > abs(info->a[1])) { |
569 | 069de562 | balrog | s->tr[0] = 0; |
570 | 069de562 | balrog | s->tr[1] = -info->a[6] * info->x; |
571 | 069de562 | balrog | s->tr[2] = info->a[0]; |
572 | 069de562 | balrog | s->tr[3] = -info->a[2] / info->a[0]; |
573 | 069de562 | balrog | s->tr[4] = info->a[6] * info->y; |
574 | 069de562 | balrog | s->tr[5] = 0; |
575 | 069de562 | balrog | s->tr[6] = info->a[4]; |
576 | 069de562 | balrog | s->tr[7] = -info->a[5] / info->a[4]; |
577 | 069de562 | balrog | } else {
|
578 | 069de562 | balrog | s->tr[0] = info->a[6] * info->y; |
579 | 069de562 | balrog | s->tr[1] = 0; |
580 | 069de562 | balrog | s->tr[2] = info->a[1]; |
581 | 069de562 | balrog | s->tr[3] = -info->a[2] / info->a[1]; |
582 | 069de562 | balrog | s->tr[4] = 0; |
583 | 069de562 | balrog | s->tr[5] = -info->a[6] * info->x; |
584 | 069de562 | balrog | s->tr[6] = info->a[3]; |
585 | 069de562 | balrog | s->tr[7] = -info->a[5] / info->a[3]; |
586 | 069de562 | balrog | } |
587 | 069de562 | balrog | |
588 | 069de562 | balrog | s->tr[0] >>= 11; |
589 | 069de562 | balrog | s->tr[1] >>= 11; |
590 | 069de562 | balrog | s->tr[3] <<= 4; |
591 | 069de562 | balrog | s->tr[4] >>= 11; |
592 | 069de562 | balrog | s->tr[5] >>= 11; |
593 | 069de562 | balrog | s->tr[7] <<= 4; |
594 | 069de562 | balrog | } |