balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 1 | /* |
| 2 | * National Semiconductor LM8322/8323 GPIO keyboard & PWM chips. |
| 3 | * |
| 4 | * Copyright (C) 2008 Nokia Corporation |
| 5 | * Written by Andrzej Zaborowski <andrew@openedhand.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 or |
| 10 | * (at your option) version 3 of the License. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
aurel32 | fad6cb1 | 2009-01-04 22:05:52 +0000 | [diff] [blame] | 17 | * You should have received a copy of the GNU General Public License along |
Blue Swirl | 8167ee8 | 2009-07-16 20:47:01 +0000 | [diff] [blame] | 18 | * with this program; if not, see <http://www.gnu.org/licenses/>. |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 19 | */ |
| 20 | |
| 21 | #include "hw.h" |
| 22 | #include "i2c.h" |
| 23 | #include "qemu-timer.h" |
| 24 | #include "console.h" |
| 25 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 26 | typedef struct { |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 27 | i2c_slave i2c; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 28 | uint8_t i2c_dir; |
| 29 | uint8_t i2c_cycle; |
| 30 | uint8_t reg; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 31 | |
| 32 | qemu_irq nirq; |
| 33 | uint16_t model; |
| 34 | |
| 35 | struct { |
| 36 | qemu_irq out[2]; |
| 37 | int in[2][2]; |
| 38 | } mux; |
| 39 | |
| 40 | uint8_t config; |
| 41 | uint8_t status; |
| 42 | uint8_t acttime; |
| 43 | uint8_t error; |
| 44 | uint8_t clock; |
| 45 | |
| 46 | struct { |
| 47 | uint16_t pull; |
| 48 | uint16_t mask; |
| 49 | uint16_t dir; |
| 50 | uint16_t level; |
| 51 | qemu_irq out[16]; |
| 52 | } gpio; |
| 53 | |
| 54 | struct { |
| 55 | uint8_t dbnctime; |
| 56 | uint8_t size; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 57 | uint8_t start; |
| 58 | uint8_t len; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 59 | uint8_t fifo[16]; |
| 60 | } kbd; |
| 61 | |
| 62 | struct { |
| 63 | uint16_t file[256]; |
| 64 | uint8_t faddr; |
| 65 | uint8_t addr[3]; |
| 66 | QEMUTimer *tm[3]; |
| 67 | } pwm; |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 68 | } LM823KbdState; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 69 | |
| 70 | #define INT_KEYPAD (1 << 0) |
| 71 | #define INT_ERROR (1 << 3) |
| 72 | #define INT_NOINIT (1 << 4) |
| 73 | #define INT_PWMEND(n) (1 << (5 + n)) |
| 74 | |
| 75 | #define ERR_BADPAR (1 << 0) |
| 76 | #define ERR_CMDUNK (1 << 1) |
| 77 | #define ERR_KEYOVR (1 << 2) |
| 78 | #define ERR_FIFOOVR (1 << 6) |
| 79 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 80 | static void lm_kbd_irq_update(LM823KbdState *s) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 81 | { |
| 82 | qemu_set_irq(s->nirq, !s->status); |
| 83 | } |
| 84 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 85 | static void lm_kbd_gpio_update(LM823KbdState *s) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 86 | { |
| 87 | } |
| 88 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 89 | static void lm_kbd_reset(LM823KbdState *s) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 90 | { |
| 91 | s->config = 0x80; |
| 92 | s->status = INT_NOINIT; |
| 93 | s->acttime = 125; |
| 94 | s->kbd.dbnctime = 3; |
| 95 | s->kbd.size = 0x33; |
| 96 | s->clock = 0x08; |
| 97 | |
| 98 | lm_kbd_irq_update(s); |
| 99 | lm_kbd_gpio_update(s); |
| 100 | } |
| 101 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 102 | static void lm_kbd_error(LM823KbdState *s, int err) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 103 | { |
| 104 | s->error |= err; |
| 105 | s->status |= INT_ERROR; |
| 106 | lm_kbd_irq_update(s); |
| 107 | } |
| 108 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 109 | static void lm_kbd_pwm_tick(LM823KbdState *s, int line) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 110 | { |
| 111 | } |
| 112 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 113 | static void lm_kbd_pwm_start(LM823KbdState *s, int line) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 114 | { |
| 115 | lm_kbd_pwm_tick(s, line); |
| 116 | } |
| 117 | |
| 118 | static void lm_kbd_pwm0_tick(void *opaque) |
| 119 | { |
| 120 | lm_kbd_pwm_tick(opaque, 0); |
| 121 | } |
| 122 | static void lm_kbd_pwm1_tick(void *opaque) |
| 123 | { |
| 124 | lm_kbd_pwm_tick(opaque, 1); |
| 125 | } |
| 126 | static void lm_kbd_pwm2_tick(void *opaque) |
| 127 | { |
| 128 | lm_kbd_pwm_tick(opaque, 2); |
| 129 | } |
| 130 | |
| 131 | enum { |
| 132 | LM832x_CMD_READ_ID = 0x80, /* Read chip ID. */ |
| 133 | LM832x_CMD_WRITE_CFG = 0x81, /* Set configuration item. */ |
| 134 | LM832x_CMD_READ_INT = 0x82, /* Get interrupt status. */ |
| 135 | LM832x_CMD_RESET = 0x83, /* Reset, same as external one */ |
| 136 | LM823x_CMD_WRITE_PULL_DOWN = 0x84, /* Select GPIO pull-up/down. */ |
| 137 | LM832x_CMD_WRITE_PORT_SEL = 0x85, /* Select GPIO in/out. */ |
| 138 | LM832x_CMD_WRITE_PORT_STATE = 0x86, /* Set GPIO pull-up/down. */ |
| 139 | LM832x_CMD_READ_PORT_SEL = 0x87, /* Get GPIO in/out. */ |
| 140 | LM832x_CMD_READ_PORT_STATE = 0x88, /* Get GPIO pull-up/down. */ |
| 141 | LM832x_CMD_READ_FIFO = 0x89, /* Read byte from FIFO. */ |
| 142 | LM832x_CMD_RPT_READ_FIFO = 0x8a, /* Read FIFO (no increment). */ |
| 143 | LM832x_CMD_SET_ACTIVE = 0x8b, /* Set active time. */ |
| 144 | LM832x_CMD_READ_ERROR = 0x8c, /* Get error status. */ |
| 145 | LM832x_CMD_READ_ROTATOR = 0x8e, /* Read rotator status. */ |
| 146 | LM832x_CMD_SET_DEBOUNCE = 0x8f, /* Set debouncing time. */ |
| 147 | LM832x_CMD_SET_KEY_SIZE = 0x90, /* Set keypad size. */ |
| 148 | LM832x_CMD_READ_KEY_SIZE = 0x91, /* Get keypad size. */ |
| 149 | LM832x_CMD_READ_CFG = 0x92, /* Get configuration item. */ |
| 150 | LM832x_CMD_WRITE_CLOCK = 0x93, /* Set clock config. */ |
| 151 | LM832x_CMD_READ_CLOCK = 0x94, /* Get clock config. */ |
| 152 | LM832x_CMD_PWM_WRITE = 0x95, /* Write PWM script. */ |
| 153 | LM832x_CMD_PWM_START = 0x96, /* Start PWM engine. */ |
| 154 | LM832x_CMD_PWM_STOP = 0x97, /* Stop PWM engine. */ |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 155 | LM832x_GENERAL_ERROR = 0xff, /* There was one error. |
| 156 | Previously was represented by -1 |
| 157 | This is not a command */ |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 158 | }; |
| 159 | |
| 160 | #define LM832x_MAX_KPX 8 |
| 161 | #define LM832x_MAX_KPY 12 |
| 162 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 163 | static uint8_t lm_kbd_read(LM823KbdState *s, int reg, int byte) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 164 | { |
| 165 | int ret; |
| 166 | |
| 167 | switch (reg) { |
| 168 | case LM832x_CMD_READ_ID: |
| 169 | ret = 0x0400; |
| 170 | break; |
| 171 | |
| 172 | case LM832x_CMD_READ_INT: |
| 173 | ret = s->status; |
| 174 | if (!(s->status & INT_NOINIT)) { |
| 175 | s->status = 0; |
| 176 | lm_kbd_irq_update(s); |
| 177 | } |
| 178 | break; |
| 179 | |
| 180 | case LM832x_CMD_READ_PORT_SEL: |
| 181 | ret = s->gpio.dir; |
| 182 | break; |
| 183 | case LM832x_CMD_READ_PORT_STATE: |
| 184 | ret = s->gpio.mask; |
| 185 | break; |
| 186 | |
| 187 | case LM832x_CMD_READ_FIFO: |
| 188 | if (s->kbd.len <= 1) |
| 189 | return 0x00; |
| 190 | |
| 191 | /* Example response from the two commands after a INT_KEYPAD |
| 192 | * interrupt caused by the key 0x3c being pressed: |
| 193 | * RPT_READ_FIFO: 55 bc 00 4e ff 0a 50 08 00 29 d9 08 01 c9 01 |
| 194 | * READ_FIFO: bc 00 00 4e ff 0a 50 08 00 29 d9 08 01 c9 01 |
| 195 | * RPT_READ_FIFO: bc 00 00 4e ff 0a 50 08 00 29 d9 08 01 c9 01 |
| 196 | * |
| 197 | * 55 is the code of the key release event serviced in the previous |
| 198 | * interrupt handling. |
| 199 | * |
| 200 | * TODO: find out whether the FIFO is advanced a single character |
| 201 | * before reading every byte or the whole size of the FIFO at the |
| 202 | * last LM832x_CMD_READ_FIFO. This affects LM832x_CMD_RPT_READ_FIFO |
| 203 | * output in cases where there are more than one event in the FIFO. |
| 204 | * Assume 0xbc and 0x3c events are in the FIFO: |
| 205 | * RPT_READ_FIFO: 55 bc 3c 00 4e ff 0a 50 08 00 29 d9 08 01 c9 |
| 206 | * READ_FIFO: bc 3c 00 00 4e ff 0a 50 08 00 29 d9 08 01 c9 |
| 207 | * Does RPT_READ_FIFO now return 0xbc and 0x3c or only 0x3c? |
| 208 | */ |
| 209 | s->kbd.start ++; |
| 210 | s->kbd.start &= sizeof(s->kbd.fifo) - 1; |
| 211 | s->kbd.len --; |
| 212 | |
| 213 | return s->kbd.fifo[s->kbd.start]; |
| 214 | case LM832x_CMD_RPT_READ_FIFO: |
| 215 | if (byte >= s->kbd.len) |
| 216 | return 0x00; |
| 217 | |
| 218 | return s->kbd.fifo[(s->kbd.start + byte) & (sizeof(s->kbd.fifo) - 1)]; |
| 219 | |
| 220 | case LM832x_CMD_READ_ERROR: |
| 221 | return s->error; |
| 222 | |
| 223 | case LM832x_CMD_READ_ROTATOR: |
| 224 | return 0; |
| 225 | |
| 226 | case LM832x_CMD_READ_KEY_SIZE: |
| 227 | return s->kbd.size; |
| 228 | |
| 229 | case LM832x_CMD_READ_CFG: |
| 230 | return s->config & 0xf; |
| 231 | |
| 232 | case LM832x_CMD_READ_CLOCK: |
| 233 | return (s->clock & 0xfc) | 2; |
| 234 | |
| 235 | default: |
| 236 | lm_kbd_error(s, ERR_CMDUNK); |
| 237 | fprintf(stderr, "%s: unknown command %02x\n", __FUNCTION__, reg); |
| 238 | return 0x00; |
| 239 | } |
| 240 | |
| 241 | return ret >> (byte << 3); |
| 242 | } |
| 243 | |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 244 | static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 245 | { |
| 246 | switch (reg) { |
| 247 | case LM832x_CMD_WRITE_CFG: |
| 248 | s->config = value; |
| 249 | /* This must be done whenever s->mux.in is updated (never). */ |
| 250 | if ((s->config >> 1) & 1) /* MUX1EN */ |
| 251 | qemu_set_irq(s->mux.out[0], s->mux.in[0][(s->config >> 0) & 1]); |
| 252 | if ((s->config >> 3) & 1) /* MUX2EN */ |
| 253 | qemu_set_irq(s->mux.out[0], s->mux.in[0][(s->config >> 2) & 1]); |
| 254 | /* TODO: check that this is issued only following the chip reset |
| 255 | * and not in the middle of operation and that it is followed by |
| 256 | * the GPIO ports re-resablishing through WRITE_PORT_SEL and |
| 257 | * WRITE_PORT_STATE (using a timer perhaps) and otherwise output |
| 258 | * warnings. */ |
| 259 | s->status = 0; |
| 260 | lm_kbd_irq_update(s); |
| 261 | s->kbd.len = 0; |
| 262 | s->kbd.start = 0; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 263 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 264 | break; |
| 265 | |
| 266 | case LM832x_CMD_RESET: |
| 267 | if (value == 0xaa) |
| 268 | lm_kbd_reset(s); |
| 269 | else |
| 270 | lm_kbd_error(s, ERR_BADPAR); |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 271 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 272 | break; |
| 273 | |
| 274 | case LM823x_CMD_WRITE_PULL_DOWN: |
| 275 | if (!byte) |
| 276 | s->gpio.pull = value; |
| 277 | else { |
| 278 | s->gpio.pull |= value << 8; |
| 279 | lm_kbd_gpio_update(s); |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 280 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 281 | } |
| 282 | break; |
| 283 | case LM832x_CMD_WRITE_PORT_SEL: |
| 284 | if (!byte) |
| 285 | s->gpio.dir = value; |
| 286 | else { |
| 287 | s->gpio.dir |= value << 8; |
| 288 | lm_kbd_gpio_update(s); |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 289 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 290 | } |
| 291 | break; |
| 292 | case LM832x_CMD_WRITE_PORT_STATE: |
| 293 | if (!byte) |
| 294 | s->gpio.mask = value; |
| 295 | else { |
| 296 | s->gpio.mask |= value << 8; |
| 297 | lm_kbd_gpio_update(s); |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 298 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 299 | } |
| 300 | break; |
| 301 | |
| 302 | case LM832x_CMD_SET_ACTIVE: |
| 303 | s->acttime = value; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 304 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 305 | break; |
| 306 | |
| 307 | case LM832x_CMD_SET_DEBOUNCE: |
| 308 | s->kbd.dbnctime = value; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 309 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 310 | if (!value) |
| 311 | lm_kbd_error(s, ERR_BADPAR); |
| 312 | break; |
| 313 | |
| 314 | case LM832x_CMD_SET_KEY_SIZE: |
| 315 | s->kbd.size = value; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 316 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 317 | if ( |
| 318 | (value & 0xf) < 3 || (value & 0xf) > LM832x_MAX_KPY || |
| 319 | (value >> 4) < 3 || (value >> 4) > LM832x_MAX_KPX) |
| 320 | lm_kbd_error(s, ERR_BADPAR); |
| 321 | break; |
| 322 | |
| 323 | case LM832x_CMD_WRITE_CLOCK: |
| 324 | s->clock = value; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 325 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 326 | if ((value & 3) && (value & 3) != 3) { |
| 327 | lm_kbd_error(s, ERR_BADPAR); |
| 328 | fprintf(stderr, "%s: invalid clock setting in RCPWM\n", |
| 329 | __FUNCTION__); |
| 330 | } |
| 331 | /* TODO: Validate that the command is only issued once */ |
| 332 | break; |
| 333 | |
| 334 | case LM832x_CMD_PWM_WRITE: |
| 335 | if (byte == 0) { |
| 336 | if (!(value & 3) || (value >> 2) > 59) { |
| 337 | lm_kbd_error(s, ERR_BADPAR); |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 338 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 339 | break; |
| 340 | } |
| 341 | |
| 342 | s->pwm.faddr = value; |
| 343 | s->pwm.file[s->pwm.faddr] = 0; |
| 344 | } else if (byte == 1) { |
| 345 | s->pwm.file[s->pwm.faddr] |= value << 8; |
| 346 | } else if (byte == 2) { |
| 347 | s->pwm.file[s->pwm.faddr] |= value << 0; |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 348 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 349 | } |
| 350 | break; |
| 351 | case LM832x_CMD_PWM_START: |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 352 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 353 | if (!(value & 3) || (value >> 2) > 59) { |
| 354 | lm_kbd_error(s, ERR_BADPAR); |
| 355 | break; |
| 356 | } |
| 357 | |
| 358 | s->pwm.addr[(value & 3) - 1] = value >> 2; |
| 359 | lm_kbd_pwm_start(s, (value & 3) - 1); |
| 360 | break; |
| 361 | case LM832x_CMD_PWM_STOP: |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 362 | s->reg = LM832x_GENERAL_ERROR; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 363 | if (!(value & 3)) { |
| 364 | lm_kbd_error(s, ERR_BADPAR); |
| 365 | break; |
| 366 | } |
| 367 | |
| 368 | qemu_del_timer(s->pwm.tm[(value & 3) - 1]); |
| 369 | break; |
| 370 | |
Juan Quintela | e69f060 | 2009-09-29 22:48:42 +0200 | [diff] [blame] | 371 | case LM832x_GENERAL_ERROR: |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 372 | lm_kbd_error(s, ERR_BADPAR); |
| 373 | break; |
| 374 | default: |
| 375 | lm_kbd_error(s, ERR_CMDUNK); |
| 376 | fprintf(stderr, "%s: unknown command %02x\n", __FUNCTION__, reg); |
| 377 | break; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | static void lm_i2c_event(i2c_slave *i2c, enum i2c_event event) |
| 382 | { |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 383 | LM823KbdState *s = FROM_I2C_SLAVE(LM823KbdState, i2c); |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 384 | |
| 385 | switch (event) { |
| 386 | case I2C_START_RECV: |
| 387 | case I2C_START_SEND: |
| 388 | s->i2c_cycle = 0; |
| 389 | s->i2c_dir = (event == I2C_START_SEND); |
| 390 | break; |
| 391 | |
| 392 | default: |
| 393 | break; |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | static int lm_i2c_rx(i2c_slave *i2c) |
| 398 | { |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 399 | LM823KbdState *s = FROM_I2C_SLAVE(LM823KbdState, i2c); |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 400 | |
| 401 | return lm_kbd_read(s, s->reg, s->i2c_cycle ++); |
| 402 | } |
| 403 | |
| 404 | static int lm_i2c_tx(i2c_slave *i2c, uint8_t data) |
| 405 | { |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 406 | LM823KbdState *s = (LM823KbdState *) i2c; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 407 | |
| 408 | if (!s->i2c_cycle) |
| 409 | s->reg = data; |
| 410 | else |
| 411 | lm_kbd_write(s, s->reg, s->i2c_cycle - 1, data); |
| 412 | s->i2c_cycle ++; |
| 413 | |
| 414 | return 0; |
| 415 | } |
| 416 | |
Juan Quintela | aa1e3b2 | 2009-09-29 22:48:43 +0200 | [diff] [blame] | 417 | static int lm_kbd_post_load(void *opaque, int version_id) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 418 | { |
Juan Quintela | aa1e3b2 | 2009-09-29 22:48:43 +0200 | [diff] [blame] | 419 | LM823KbdState *s = opaque; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 420 | |
| 421 | lm_kbd_irq_update(s); |
| 422 | lm_kbd_gpio_update(s); |
| 423 | |
| 424 | return 0; |
| 425 | } |
| 426 | |
Juan Quintela | aa1e3b2 | 2009-09-29 22:48:43 +0200 | [diff] [blame] | 427 | static const VMStateDescription vmstate_lm_kbd = { |
| 428 | .name = "LM8323", |
| 429 | .version_id = 0, |
| 430 | .minimum_version_id = 0, |
| 431 | .minimum_version_id_old = 0, |
| 432 | .post_load = lm_kbd_post_load, |
| 433 | .fields = (VMStateField []) { |
| 434 | VMSTATE_I2C_SLAVE(i2c, LM823KbdState), |
| 435 | VMSTATE_UINT8(i2c_dir, LM823KbdState), |
| 436 | VMSTATE_UINT8(i2c_cycle, LM823KbdState), |
| 437 | VMSTATE_UINT8(reg, LM823KbdState), |
| 438 | VMSTATE_UINT8(config, LM823KbdState), |
| 439 | VMSTATE_UINT8(status, LM823KbdState), |
| 440 | VMSTATE_UINT8(acttime, LM823KbdState), |
| 441 | VMSTATE_UINT8(error, LM823KbdState), |
| 442 | VMSTATE_UINT8(clock, LM823KbdState), |
| 443 | VMSTATE_UINT16(gpio.pull, LM823KbdState), |
| 444 | VMSTATE_UINT16(gpio.mask, LM823KbdState), |
| 445 | VMSTATE_UINT16(gpio.dir, LM823KbdState), |
| 446 | VMSTATE_UINT16(gpio.level, LM823KbdState), |
| 447 | VMSTATE_UINT8(kbd.dbnctime, LM823KbdState), |
| 448 | VMSTATE_UINT8(kbd.size, LM823KbdState), |
| 449 | VMSTATE_UINT8(kbd.start, LM823KbdState), |
| 450 | VMSTATE_UINT8(kbd.len, LM823KbdState), |
| 451 | VMSTATE_BUFFER(kbd.fifo, LM823KbdState), |
| 452 | VMSTATE_UINT16_ARRAY(pwm.file, LM823KbdState, 256), |
| 453 | VMSTATE_UINT8(pwm.faddr, LM823KbdState), |
| 454 | VMSTATE_BUFFER(pwm.addr, LM823KbdState), |
| 455 | VMSTATE_TIMER_ARRAY(pwm.tm, LM823KbdState, 3), |
| 456 | VMSTATE_END_OF_LIST() |
| 457 | } |
| 458 | }; |
| 459 | |
| 460 | |
Gerd Hoffmann | 81a322d | 2009-08-14 10:36:05 +0200 | [diff] [blame] | 461 | static int lm8323_init(i2c_slave *i2c) |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 462 | { |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 463 | LM823KbdState *s = FROM_I2C_SLAVE(LM823KbdState, i2c); |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 464 | |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 465 | s->model = 0x8323; |
| 466 | s->pwm.tm[0] = qemu_new_timer(vm_clock, lm_kbd_pwm0_tick, s); |
| 467 | s->pwm.tm[1] = qemu_new_timer(vm_clock, lm_kbd_pwm1_tick, s); |
| 468 | s->pwm.tm[2] = qemu_new_timer(vm_clock, lm_kbd_pwm2_tick, s); |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 469 | qdev_init_gpio_out(&i2c->qdev, &s->nirq, 1); |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 470 | |
| 471 | lm_kbd_reset(s); |
| 472 | |
Jan Kiszka | a08d436 | 2009-06-27 09:25:07 +0200 | [diff] [blame] | 473 | qemu_register_reset((void *) lm_kbd_reset, s); |
Gerd Hoffmann | 81a322d | 2009-08-14 10:36:05 +0200 | [diff] [blame] | 474 | return 0; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 475 | } |
| 476 | |
| 477 | void lm832x_key_event(struct i2c_slave *i2c, int key, int state) |
| 478 | { |
Paul Brook | bc24a22 | 2009-05-10 01:44:56 +0100 | [diff] [blame] | 479 | LM823KbdState *s = (LM823KbdState *) i2c; |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 480 | |
| 481 | if ((s->status & INT_ERROR) && (s->error & ERR_FIFOOVR)) |
| 482 | return; |
| 483 | |
blueswir1 | 7442511 | 2009-04-07 18:22:35 +0000 | [diff] [blame] | 484 | if (s->kbd.len >= sizeof(s->kbd.fifo)) { |
| 485 | lm_kbd_error(s, ERR_FIFOOVR); |
| 486 | return; |
| 487 | } |
balrog | 1d4e547 | 2008-05-09 22:16:11 +0000 | [diff] [blame] | 488 | |
| 489 | s->kbd.fifo[(s->kbd.start + s->kbd.len ++) & (sizeof(s->kbd.fifo) - 1)] = |
| 490 | key | (state << 7); |
| 491 | |
| 492 | /* We never set ERR_KEYOVR because we support multiple keys fine. */ |
| 493 | s->status |= INT_KEYPAD; |
| 494 | lm_kbd_irq_update(s); |
| 495 | } |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 496 | |
| 497 | static I2CSlaveInfo lm8323_info = { |
Gerd Hoffmann | 074f2ff | 2009-06-10 09:41:42 +0200 | [diff] [blame] | 498 | .qdev.name = "lm8323", |
| 499 | .qdev.size = sizeof(LM823KbdState), |
Juan Quintela | be73cfe | 2009-12-02 12:36:46 +0100 | [diff] [blame] | 500 | .qdev.vmsd = &vmstate_lm_kbd, |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 501 | .init = lm8323_init, |
| 502 | .event = lm_i2c_event, |
| 503 | .recv = lm_i2c_rx, |
| 504 | .send = lm_i2c_tx |
| 505 | }; |
| 506 | |
| 507 | static void lm832x_register_devices(void) |
| 508 | { |
Gerd Hoffmann | 074f2ff | 2009-06-10 09:41:42 +0200 | [diff] [blame] | 509 | i2c_register_slave(&lm8323_info); |
Paul Brook | 2d9401a | 2009-05-14 22:35:08 +0100 | [diff] [blame] | 510 | } |
| 511 | |
| 512 | device_init(lm832x_register_devices) |