1 /* 2 * PXA270-based Zipit Z2 device 3 * 4 * Copyright (c) 2011 by Vasily Khoruzhick <anarsoul@gmail.com> 5 * 6 * Code is based on mainstone platform. 7 * 8 * This code is licensed under the GNU GPL v2. 9 * 10 * Contributions after 2012-01-13 are licensed under the terms of the 11 * GNU GPL, version 2 or (at your option) any later version. 12 */ 13 14 #include "qemu/osdep.h" 15 #include "qemu/units.h" 16 #include "hw/arm/pxa.h" 17 #include "hw/arm/boot.h" 18 #include "hw/i2c/i2c.h" 19 #include "hw/irq.h" 20 #include "hw/ssi/ssi.h" 21 #include "migration/vmstate.h" 22 #include "hw/boards.h" 23 #include "hw/block/flash.h" 24 #include "ui/console.h" 25 #include "hw/audio/wm8750.h" 26 #include "audio/audio.h" 27 #include "exec/address-spaces.h" 28 #include "qom/object.h" 29 #include "qapi/error.h" 30 #include "trace.h" 31 32 static const struct keymap map[0x100] = { 33 [0 ... 0xff] = { -1, -1 }, 34 [0x3b] = {0, 0}, /* Option = F1 */ 35 [0xc8] = {0, 1}, /* Up */ 36 [0xd0] = {0, 2}, /* Down */ 37 [0xcb] = {0, 3}, /* Left */ 38 [0xcd] = {0, 4}, /* Right */ 39 [0xcf] = {0, 5}, /* End */ 40 [0x0d] = {0, 6}, /* KPPLUS */ 41 [0xc7] = {1, 0}, /* Home */ 42 [0x10] = {1, 1}, /* Q */ 43 [0x17] = {1, 2}, /* I */ 44 [0x22] = {1, 3}, /* G */ 45 [0x2d] = {1, 4}, /* X */ 46 [0x1c] = {1, 5}, /* Enter */ 47 [0x0c] = {1, 6}, /* KPMINUS */ 48 [0xc9] = {2, 0}, /* PageUp */ 49 [0x11] = {2, 1}, /* W */ 50 [0x18] = {2, 2}, /* O */ 51 [0x23] = {2, 3}, /* H */ 52 [0x2e] = {2, 4}, /* C */ 53 [0x38] = {2, 5}, /* LeftAlt */ 54 [0xd1] = {3, 0}, /* PageDown */ 55 [0x12] = {3, 1}, /* E */ 56 [0x19] = {3, 2}, /* P */ 57 [0x24] = {3, 3}, /* J */ 58 [0x2f] = {3, 4}, /* V */ 59 [0x2a] = {3, 5}, /* LeftShift */ 60 [0x01] = {4, 0}, /* Esc */ 61 [0x13] = {4, 1}, /* R */ 62 [0x1e] = {4, 2}, /* A */ 63 [0x25] = {4, 3}, /* K */ 64 [0x30] = {4, 4}, /* B */ 65 [0x1d] = {4, 5}, /* LeftCtrl */ 66 [0x0f] = {5, 0}, /* Tab */ 67 [0x14] = {5, 1}, /* T */ 68 [0x1f] = {5, 2}, /* S */ 69 [0x26] = {5, 3}, /* L */ 70 [0x31] = {5, 4}, /* N */ 71 [0x39] = {5, 5}, /* Space */ 72 [0x3c] = {6, 0}, /* Stop = F2 */ 73 [0x15] = {6, 1}, /* Y */ 74 [0x20] = {6, 2}, /* D */ 75 [0x0e] = {6, 3}, /* Backspace */ 76 [0x32] = {6, 4}, /* M */ 77 [0x33] = {6, 5}, /* Comma */ 78 [0x3d] = {7, 0}, /* Play = F3 */ 79 [0x16] = {7, 1}, /* U */ 80 [0x21] = {7, 2}, /* F */ 81 [0x2c] = {7, 3}, /* Z */ 82 [0x27] = {7, 4}, /* Semicolon */ 83 [0x34] = {7, 5}, /* Dot */ 84 }; 85 86 #define Z2_RAM_SIZE 0x02000000 87 #define Z2_FLASH_BASE 0x00000000 88 #define Z2_FLASH_SIZE 0x00800000 89 90 static struct arm_boot_info z2_binfo = { 91 .loader_start = PXA2XX_SDRAM_BASE, 92 .ram_size = Z2_RAM_SIZE, 93 }; 94 95 #define Z2_GPIO_SD_DETECT 96 96 #define Z2_GPIO_AC_IN 0 97 #define Z2_GPIO_KEY_ON 1 98 #define Z2_GPIO_LCD_CS 88 99 100 struct ZipitLCD { 101 SSIPeripheral ssidev; 102 int32_t selected; 103 int32_t enabled; 104 uint8_t buf[3]; 105 uint32_t cur_reg; 106 int pos; 107 }; 108 109 #define TYPE_ZIPIT_LCD "zipit-lcd" 110 OBJECT_DECLARE_SIMPLE_TYPE(ZipitLCD, ZIPIT_LCD) 111 112 static uint32_t zipit_lcd_transfer(SSIPeripheral *dev, uint32_t value) 113 { 114 ZipitLCD *z = ZIPIT_LCD(dev); 115 uint16_t val; 116 117 trace_z2_lcd_reg_update(z->cur_reg, z->buf[0], z->buf[1], z->buf[2], value); 118 if (z->selected) { 119 z->buf[z->pos] = value & 0xff; 120 z->pos++; 121 } 122 if (z->pos == 3) { 123 switch (z->buf[0]) { 124 case 0x74: 125 z->cur_reg = z->buf[2]; 126 break; 127 case 0x76: 128 val = z->buf[1] << 8 | z->buf[2]; 129 if (z->cur_reg == 0x22 && val == 0x0000) { 130 z->enabled = 1; 131 trace_z2_lcd_enable_disable_result("enabled"); 132 } else if (z->cur_reg == 0x10 && val == 0x0000) { 133 z->enabled = 0; 134 trace_z2_lcd_enable_disable_result("disabled"); 135 } 136 break; 137 default: 138 break; 139 } 140 z->pos = 0; 141 } 142 return 0; 143 } 144 145 static void z2_lcd_cs(void *opaque, int line, int level) 146 { 147 ZipitLCD *z2_lcd = opaque; 148 z2_lcd->selected = !level; 149 } 150 151 static void zipit_lcd_realize(SSIPeripheral *dev, Error **errp) 152 { 153 ZipitLCD *z = ZIPIT_LCD(dev); 154 z->selected = 0; 155 z->enabled = 0; 156 z->pos = 0; 157 } 158 159 static const VMStateDescription vmstate_zipit_lcd_state = { 160 .name = "zipit-lcd", 161 .version_id = 2, 162 .minimum_version_id = 2, 163 .fields = (const VMStateField[]) { 164 VMSTATE_SSI_PERIPHERAL(ssidev, ZipitLCD), 165 VMSTATE_INT32(selected, ZipitLCD), 166 VMSTATE_INT32(enabled, ZipitLCD), 167 VMSTATE_BUFFER(buf, ZipitLCD), 168 VMSTATE_UINT32(cur_reg, ZipitLCD), 169 VMSTATE_INT32(pos, ZipitLCD), 170 VMSTATE_END_OF_LIST(), 171 } 172 }; 173 174 static void zipit_lcd_class_init(ObjectClass *klass, void *data) 175 { 176 DeviceClass *dc = DEVICE_CLASS(klass); 177 SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass); 178 179 k->realize = zipit_lcd_realize; 180 k->transfer = zipit_lcd_transfer; 181 dc->vmsd = &vmstate_zipit_lcd_state; 182 } 183 184 static const TypeInfo zipit_lcd_info = { 185 .name = TYPE_ZIPIT_LCD, 186 .parent = TYPE_SSI_PERIPHERAL, 187 .instance_size = sizeof(ZipitLCD), 188 .class_init = zipit_lcd_class_init, 189 }; 190 191 #define TYPE_AER915 "aer915" 192 OBJECT_DECLARE_SIMPLE_TYPE(AER915State, AER915) 193 194 struct AER915State { 195 I2CSlave parent_obj; 196 197 int len; 198 uint8_t buf[3]; 199 }; 200 201 static int aer915_send(I2CSlave *i2c, uint8_t data) 202 { 203 AER915State *s = AER915(i2c); 204 205 s->buf[s->len] = data; 206 if (s->len++ > 2) { 207 trace_z2_aer915_send_too_long(s->len); 208 return 1; 209 } 210 211 if (s->len == 2) { 212 trace_z2_aer915_send(s->buf[0], s->buf[1]); 213 } 214 215 return 0; 216 } 217 218 static int aer915_event(I2CSlave *i2c, enum i2c_event event) 219 { 220 AER915State *s = AER915(i2c); 221 222 trace_z2_aer915_event(s->len, event); 223 switch (event) { 224 case I2C_START_SEND: 225 s->len = 0; 226 break; 227 case I2C_START_RECV: 228 break; 229 case I2C_FINISH: 230 break; 231 default: 232 break; 233 } 234 235 return 0; 236 } 237 238 static uint8_t aer915_recv(I2CSlave *slave) 239 { 240 AER915State *s = AER915(slave); 241 int retval = 0x00; 242 243 switch (s->buf[0]) { 244 /* Return hardcoded battery voltage, 245 * 0xf0 means ~4.1V 246 */ 247 case 0x02: 248 retval = 0xf0; 249 break; 250 /* Return 0x00 for other regs, 251 * we don't know what they are for, 252 * anyway they return 0x00 on real hardware. 253 */ 254 default: 255 break; 256 } 257 258 return retval; 259 } 260 261 static const VMStateDescription vmstate_aer915_state = { 262 .name = "aer915", 263 .version_id = 1, 264 .minimum_version_id = 1, 265 .fields = (const VMStateField[]) { 266 VMSTATE_INT32(len, AER915State), 267 VMSTATE_BUFFER(buf, AER915State), 268 VMSTATE_END_OF_LIST(), 269 } 270 }; 271 272 static void aer915_class_init(ObjectClass *klass, void *data) 273 { 274 DeviceClass *dc = DEVICE_CLASS(klass); 275 I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); 276 277 k->event = aer915_event; 278 k->recv = aer915_recv; 279 k->send = aer915_send; 280 dc->vmsd = &vmstate_aer915_state; 281 } 282 283 static const TypeInfo aer915_info = { 284 .name = TYPE_AER915, 285 .parent = TYPE_I2C_SLAVE, 286 .instance_size = sizeof(AER915State), 287 .class_init = aer915_class_init, 288 }; 289 290 #define FLASH_SECTOR_SIZE (64 * KiB) 291 292 static void z2_init(MachineState *machine) 293 { 294 PXA2xxState *mpu; 295 DriveInfo *dinfo; 296 void *z2_lcd; 297 I2CBus *bus; 298 DeviceState *wm; 299 I2CSlave *i2c_dev; 300 301 /* Setup CPU & memory */ 302 mpu = pxa270_init(z2_binfo.ram_size, machine->cpu_type); 303 304 dinfo = drive_get(IF_PFLASH, 0, 0); 305 pflash_cfi01_register(Z2_FLASH_BASE, "z2.flash0", Z2_FLASH_SIZE, 306 dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, 307 FLASH_SECTOR_SIZE, 4, 0, 0, 0, 0, 0); 308 309 /* setup keypad */ 310 pxa27x_register_keypad(mpu->kp, map, 0x100); 311 312 /* MMC/SD host */ 313 pxa2xx_mmci_handlers(mpu->mmc, 314 NULL, 315 qdev_get_gpio_in(mpu->gpio, Z2_GPIO_SD_DETECT)); 316 317 type_register_static(&zipit_lcd_info); 318 type_register_static(&aer915_info); 319 z2_lcd = ssi_create_peripheral(mpu->ssp[1], TYPE_ZIPIT_LCD); 320 bus = pxa2xx_i2c_bus(mpu->i2c[0]); 321 322 i2c_slave_create_simple(bus, TYPE_AER915, 0x55); 323 324 i2c_dev = i2c_slave_new(TYPE_WM8750, 0x1b); 325 wm = DEVICE(i2c_dev); 326 327 if (machine->audiodev) { 328 qdev_prop_set_string(wm, "audiodev", machine->audiodev); 329 } 330 i2c_slave_realize_and_unref(i2c_dev, bus, &error_abort); 331 332 mpu->i2s->opaque = wm; 333 mpu->i2s->codec_out = wm8750_dac_dat; 334 mpu->i2s->codec_in = wm8750_adc_dat; 335 wm8750_data_req_set(wm, mpu->i2s->data_req, mpu->i2s); 336 337 qdev_connect_gpio_out(mpu->gpio, Z2_GPIO_LCD_CS, 338 qemu_allocate_irq(z2_lcd_cs, z2_lcd, 0)); 339 340 z2_binfo.board_id = 0x6dd; 341 arm_load_kernel(mpu->cpu, machine, &z2_binfo); 342 } 343 344 static void z2_machine_init(MachineClass *mc) 345 { 346 mc->desc = "Zipit Z2 (PXA27x)"; 347 mc->init = z2_init; 348 mc->ignore_memory_transaction_failures = true; 349 mc->default_cpu_type = ARM_CPU_TYPE_NAME("pxa270-c5"); 350 351 machine_add_audiodev_property(mc); 352 } 353 354 DEFINE_MACHINE("z2", z2_machine_init) 355