drivers/staging/go7007/saa7134-go7007.c

   1 /*
   2  * Copyright (C) 2005-2006 Micronas USA Inc.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License (Version 2) as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, write to the Free Software Foundation,
  15  * Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  16  */
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/spinlock.h>
  22 #include <linux/wait.h>
  23 #include <linux/list.h>
  24 #include <linux/slab.h>
  25 #include <linux/time.h>
  26 #include <linux/mm.h>
  27 #include <linux/usb.h>
  28 #include <linux/i2c.h>
  29 #include <asm/byteorder.h>
  30 #include <media/audiochip.h>
  31
  32 #include "saa7134-reg.h"
  33 #include "saa7134.h"
  34 #include "go7007-priv.h"
  35
  36 #define GO7007_HPI_DEBUG
  37
  38 enum hpi_address {
  39         HPI_ADDR_VIDEO_BUFFER = 0xe4,
  40         HPI_ADDR_INIT_BUFFER = 0xea,
  41         HPI_ADDR_INTR_RET_VALUE = 0xee,
  42         HPI_ADDR_INTR_RET_DATA = 0xec,
  43         HPI_ADDR_INTR_STATUS = 0xf4,
  44         HPI_ADDR_INTR_WR_PARAM = 0xf6,
  45         HPI_ADDR_INTR_WR_INDEX = 0xf8,
  46 };
  47
  48 enum gpio_command {
  49         GPIO_COMMAND_RESET = 0x00, /* 000b */
  50         GPIO_COMMAND_REQ1  = 0x04, /* 001b */
  51         GPIO_COMMAND_WRITE = 0x20, /* 010b */
  52         GPIO_COMMAND_REQ2  = 0x24, /* 011b */
  53         GPIO_COMMAND_READ  = 0x80, /* 100b */
  54         GPIO_COMMAND_VIDEO = 0x84, /* 101b */
  55         GPIO_COMMAND_IDLE  = 0xA0, /* 110b */
  56         GPIO_COMMAND_ADDR  = 0xA4, /* 111b */
  57 };
  58
  59 struct saa7134_go7007 {
  60         struct saa7134_dev *dev;
  61         u8 *top;
  62         u8 *bottom;
  63         dma_addr_t top_dma;
  64         dma_addr_t bottom_dma;
  65 };
  66
  67 static struct go7007_board_info board_voyager = {
  68         .firmware        = "go7007tv.bin",
  69         .flags           = 0,
  70         .sensor_flags    = GO7007_SENSOR_656 |
  71                                 GO7007_SENSOR_VALID_ENABLE |
  72                                 GO7007_SENSOR_TV |
  73                                 GO7007_SENSOR_VBI,
  74         .audio_flags    = GO7007_AUDIO_I2S_MODE_1 |
  75                                 GO7007_AUDIO_WORD_16,
  76         .audio_rate      = 48000,
  77         .audio_bclk_div  = 8,
  78         .audio_main_div  = 2,
  79         .hpi_buffer_cap  = 7,
  80         .num_inputs      = 1,
  81         .inputs          = {
  82                 {
  83                         .name           = "SAA7134",
  84                 },
  85         },
  86 };
  87
  88 /********************* Driver for GPIO HPI interface *********************/
  89
  90 static int gpio_write(struct saa7134_dev *dev, u8 addr, u16 data)
  91 {
  92         saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
  93
  94         /* Write HPI address */
  95         saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
  96         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
  97         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
  98
  99         /* Write low byte */
 100         saa_writeb(SAA7134_GPIO_GPSTATUS0, data & 0xff);
 101         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
 102         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 103
 104         /* Write high byte */
 105         saa_writeb(SAA7134_GPIO_GPSTATUS0, data >> 8);
 106         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
 107         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 108
 109         return 0;
 110 }
 111
 112 static int gpio_read(struct saa7134_dev *dev, u8 addr, u16 *data)
 113 {
 114         saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
 115
 116         /* Write HPI address */
 117         saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
 118         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
 119         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 120
 121         saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
 122
 123         /* Read low byte */
 124         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
 125         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 126         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 127         *data = saa_readb(SAA7134_GPIO_GPSTATUS0);
 128         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 129
 130         /* Read high byte */
 131         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
 132         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 133         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 134         *data |= saa_readb(SAA7134_GPIO_GPSTATUS0) << 8;
 135         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 136
 137         return 0;
 138 }
 139
 140 static int saa7134_go7007_interface_reset(struct go7007 *go)
 141 {
 142         struct saa7134_go7007 *saa = go->hpi_context;
 143         struct saa7134_dev *dev = saa->dev;
 144         u32 status;
 145         u16 intr_val, intr_data;
 146         int count = 20;
 147
 148         saa_clearb(SAA7134_TS_PARALLEL, 0x80); /* Disable TS interface */
 149         saa_writeb(SAA7134_GPIO_GPMODE2, 0xa4);
 150         saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
 151
 152         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
 153         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_RESET);
 154         msleep(1);
 155         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
 156         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
 157         msleep(10);
 158
 159         saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 160         saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 161
 162         status = saa_readb(SAA7134_GPIO_GPSTATUS2);
 163         /*printk(KERN_DEBUG "status is %s\n", status & 0x40 ? "OK" : "not OK"); */
 164
 165         /* enter command mode...(?) */
 166         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
 167         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
 168
 169         do {
 170                 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 171                 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
 172                 status = saa_readb(SAA7134_GPIO_GPSTATUS2);
 173                 /*printk(KERN_INFO "gpio is %08x\n", saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)); */
 174         } while (--count > 0);
 175
 176         /* Wait for an interrupt to indicate successful hardware reset */
 177         if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
 178                         (intr_val & ~0x1) != 0x55aa) {
 179                 printk(KERN_ERR
 180                         "saa7134-go7007: unable to reset the GO7007\n");
 181                 return -1;
 182         }
 183         return 0;
 184 }
 185
 186 static int saa7134_go7007_write_interrupt(struct go7007 *go, int addr, int data)
 187 {
 188         struct saa7134_go7007 *saa = go->hpi_context;
 189         struct saa7134_dev *dev = saa->dev;
 190         int i;
 191         u16 status_reg;
 192
 193 #ifdef GO7007_HPI_DEBUG
 194         printk(KERN_DEBUG
 195                 "saa7134-go7007: WriteInterrupt: %04x %04x\n", addr, data);
 196 #endif
 197
 198         for (i = 0; i < 100; ++i) {
 199                 gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
 200                 if (!(status_reg & 0x0010))
 201                         break;
 202                 msleep(10);
 203         }
 204         if (i == 100) {
 205                 printk(KERN_ERR
 206                         "saa7134-go7007: device is hung, status reg = 0x%04x\n",
 207                         status_reg);
 208                 return -1;
 209         }
 210         gpio_write(dev, HPI_ADDR_INTR_WR_PARAM, data);
 211         gpio_write(dev, HPI_ADDR_INTR_WR_INDEX, addr);
 212
 213         return 0;
 214 }
 215
 216 static int saa7134_go7007_read_interrupt(struct go7007 *go)
 217 {
 218         struct saa7134_go7007 *saa = go->hpi_context;
 219         struct saa7134_dev *dev = saa->dev;
 220
 221         /* XXX we need to wait if there is no interrupt available */
 222         go->interrupt_available = 1;
 223         gpio_read(dev, HPI_ADDR_INTR_RET_VALUE, &go->interrupt_value);
 224         gpio_read(dev, HPI_ADDR_INTR_RET_DATA, &go->interrupt_data);
 225 #ifdef GO7007_HPI_DEBUG
 226         printk(KERN_DEBUG "saa7134-go7007: ReadInterrupt: %04x %04x\n",
 227                         go->interrupt_value, go->interrupt_data);
 228 #endif
 229         return 0;
 230 }
 231
 232 static void saa7134_go7007_irq_ts_done(struct saa7134_dev *dev,
 233                                                 unsigned long status)
 234 {
 235         struct go7007 *go = video_get_drvdata(dev->empress_dev);
 236         struct saa7134_go7007 *saa = go->hpi_context;
 237
 238         if (!go->streaming)
 239                 return;
 240         if (0 != (status & 0x000f0000))
 241                 printk(KERN_DEBUG "saa7134-go7007: irq: lost %ld\n",
 242                                 (status >> 16) & 0x0f);
 243         if (status & 0x100000) {
 244                 dma_sync_single(&dev->pci->dev,
 245                                 saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
 246                 go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
 247                 saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
 248         } else {
 249                 dma_sync_single(&dev->pci->dev,
 250                                 saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
 251                 go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
 252                 saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
 253         }
 254 }
 255
 256 static int saa7134_go7007_stream_start(struct go7007 *go)
 257 {
 258         struct saa7134_go7007 *saa = go->hpi_context;
 259         struct saa7134_dev *dev = saa->dev;
 260
 261         saa->top_dma = dma_map_page(&dev->pci->dev, virt_to_page(saa->top),
 262                         0, PAGE_SIZE, DMA_FROM_DEVICE);
 263         if (!saa->top_dma)
 264                 return -ENOMEM;
 265         saa->bottom_dma = dma_map_page(&dev->pci->dev,
 266                         virt_to_page(saa->bottom),
 267                         0, PAGE_SIZE, DMA_FROM_DEVICE);
 268         if (!saa->bottom_dma) {
 269                 dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
 270                                 DMA_FROM_DEVICE);
 271                 return -ENOMEM;
 272         }
 273
 274         saa_writel(SAA7134_VIDEO_PORT_CTRL0 >> 2, 0xA300B000);
 275         saa_writel(SAA7134_VIDEO_PORT_CTRL4 >> 2, 0x40000200);
 276
 277         /* Set HPI interface for video */
 278         saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
 279         saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_VIDEO_BUFFER);
 280         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
 281         saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
 282
 283         /* Enable TS interface */
 284         saa_writeb(SAA7134_TS_PARALLEL, 0xe6);
 285
 286         /* Reset TS interface */
 287         saa_setb(SAA7134_TS_SERIAL1, 0x01);
 288         saa_clearb(SAA7134_TS_SERIAL1, 0x01);
 289
 290         /* Set up transfer block size */
 291         saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 128 - 1);
 292         saa_writeb(SAA7134_TS_DMA0, (PAGE_SIZE >> 7) - 1);
 293         saa_writeb(SAA7134_TS_DMA1, 0);
 294         saa_writeb(SAA7134_TS_DMA2, 0);
 295
 296         /* Enable video streaming mode */
 297         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_VIDEO);
 298
 299         saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
 300         saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
 301         saa_writel(SAA7134_RS_PITCH(5), 128);
 302         saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_MAX);
 303
 304         /* Enable TS FIFO */
 305         saa_setl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
 306
 307         /* Enable DMA IRQ */
 308         saa_setl(SAA7134_IRQ1,
 309                         SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
 310
 311         return 0;
 312 }
 313
 314 static int saa7134_go7007_stream_stop(struct go7007 *go)
 315 {
 316         struct saa7134_go7007 *saa = go->hpi_context;
 317         struct saa7134_dev *dev = saa->dev;
 318
 319         /* Shut down TS FIFO */
 320         saa_clearl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
 321
 322         /* Disable DMA IRQ */
 323         saa_clearl(SAA7134_IRQ1,
 324                         SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
 325
 326         /* Disable TS interface */
 327         saa_clearb(SAA7134_TS_PARALLEL, 0x80);
 328
 329         dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
 330                         DMA_FROM_DEVICE);
 331         dma_unmap_page(&dev->pci->dev, saa->bottom_dma, PAGE_SIZE,
 332                         DMA_FROM_DEVICE);
 333
 334         return 0;
 335 }
 336
 337 static int saa7134_go7007_send_firmware(struct go7007 *go, u8 *data, int len)
 338 {
 339         struct saa7134_go7007 *saa = go->hpi_context;
 340         struct saa7134_dev *dev = saa->dev;
 341         u16 status_reg;
 342         int i;
 343
 344 #ifdef GO7007_HPI_DEBUG
 345         printk(KERN_DEBUG "saa7134-go7007: DownloadBuffer "
 346                         "sending %d bytes\n", len);
 347 #endif
 348
 349         while (len > 0) {
 350                 i = len > 64 ? 64 : len;
 351                 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
 352                 saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_INIT_BUFFER);
 353                 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
 354                 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 355                 while (i-- > 0) {
 356                         saa_writeb(SAA7134_GPIO_GPSTATUS0, *data);
 357                         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
 358                         saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
 359                         ++data;
 360                         --len;
 361                 }
 362                 for (i = 0; i < 100; ++i) {
 363                         gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
 364                         if (!(status_reg & 0x0002))
 365                                 break;
 366                 }
 367                 if (i == 100) {
 368                         printk(KERN_ERR "saa7134-go7007: device is hung, "
 369                                         "status reg = 0x%04x\n", status_reg);
 370                         return -1;
 371                 }
 372         }
 373         return 0;
 374 }
 375
 376 static struct go7007_hpi_ops saa7134_go7007_hpi_ops = {
 377         .interface_reset        = saa7134_go7007_interface_reset,
 378         .write_interrupt        = saa7134_go7007_write_interrupt,
 379         .read_interrupt         = saa7134_go7007_read_interrupt,
 380         .stream_start           = saa7134_go7007_stream_start,
 381         .stream_stop            = saa7134_go7007_stream_stop,
 382         .send_firmware          = saa7134_go7007_send_firmware,
 383 };
 384
 385 /********************* Add/remove functions *********************/
 386
 387 static int saa7134_go7007_init(struct saa7134_dev *dev)
 388 {
 389         struct go7007 *go;
 390         struct saa7134_go7007 *saa;
 391
 392         printk(KERN_DEBUG "saa7134-go7007: probing new SAA713X board\n");
 393
 394         saa = kmalloc(sizeof(struct saa7134_go7007), GFP_KERNEL);
 395         if (saa == NULL)
 396                 return -ENOMEM;
 397         memset(saa, 0, sizeof(struct saa7134_go7007));
 398
 399         /* Allocate a couple pages for receiving the compressed stream */
 400         saa->top = (u8 *)get_zeroed_page(GFP_KERNEL);
 401         if (!saa->top)
 402                 goto allocfail;
 403         saa->bottom = (u8 *)get_zeroed_page(GFP_KERNEL);
 404         if (!saa->bottom)
 405                 goto allocfail;
 406
 407         go = go7007_alloc(&board_voyager, &dev->pci->dev);
 408         if (go == NULL)
 409                 goto allocfail;
 410         go->board_id = GO7007_BOARDID_PCI_VOYAGER;
 411         strncpy(go->name, saa7134_boards[dev->board].name, sizeof(go->name));
 412         go->hpi_ops = &saa7134_go7007_hpi_ops;
 413         go->hpi_context = saa;
 414         saa->dev = dev;
 415
 416         /* Boot the GO7007 */
 417         if (go7007_boot_encoder(go, go->board_info->flags &
 418                                         GO7007_BOARD_USE_ONBOARD_I2C) < 0)
 419                 goto initfail;
 420
 421         /* Do any final GO7007 initialization, then register the
 422          * V4L2 and ALSA interfaces */
 423         if (go7007_register_encoder(go) < 0)
 424                 goto initfail;
 425         dev->empress_dev = go->video_dev;
 426         video_set_drvdata(dev->empress_dev, go);
 427
 428         go->status = STATUS_ONLINE;
 429         return 0;
 430
 431 initfail:
 432         go->status = STATUS_SHUTDOWN;
 433         return 0;
 434
 435 allocfail:
 436         if (saa->top)
 437                 free_page((unsigned long)saa->top);
 438         if (saa->bottom)
 439                 free_page((unsigned long)saa->bottom);
 440         kfree(saa);
 441         return -ENOMEM;
 442 }
 443
 444 static int saa7134_go7007_fini(struct saa7134_dev *dev)
 445 {
 446         struct go7007 *go;
 447         struct saa7134_go7007 *saa;
 448
 449         if (NULL == dev->empress_dev)
 450                 return 0;
 451
 452         go = video_get_drvdata(dev->empress_dev);
 453         saa = go->hpi_context;
 454         go->status = STATUS_SHUTDOWN;
 455         free_page((unsigned long)saa->top);
 456         free_page((unsigned long)saa->bottom);
 457         kfree(saa);
 458         go7007_remove(go);
 459         dev->empress_dev = NULL;
 460
 461         return 0;
 462 }
 463
 464 static struct saa7134_mpeg_ops saa7134_go7007_ops = {
 465         .type          = SAA7134_MPEG_GO7007,
 466         .init          = saa7134_go7007_init,
 467         .fini          = saa7134_go7007_fini,
 468         .irq_ts_done   = saa7134_go7007_irq_ts_done,
 469 };
 470
 471 static int __init saa7134_go7007_mod_init(void)
 472 {
 473         return saa7134_ts_register(&saa7134_go7007_ops);
 474 }
 475
 476 static void __exit saa7134_go7007_mod_cleanup(void)
 477 {
 478         saa7134_ts_unregister(&saa7134_go7007_ops);
 479 }
 480
 481 module_init(saa7134_go7007_mod_init);
 482 module_exit(saa7134_go7007_mod_cleanup);
 483
 484 MODULE_LICENSE("GPL v2");