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Add linux-next specific files for 20110831
[linux-2.6/next.git] / drivers / staging / go7007 / saa7134-go7007.c
blobcf7c34a994590ef4d004ed5f3c79b28a8e383068
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/v4l2-common.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 MODULE_FIRMWARE("go7007tv.bin");
88
89 /********************* Driver for GPIO HPI interface *********************/
90
91 static int gpio_write(struct saa7134_dev *dev, u8 addr, u16 data)
92 {
93 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
94
95 /* Write HPI address */
96 saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
97 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
98 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
99
100 /* Write low byte */
101 saa_writeb(SAA7134_GPIO_GPSTATUS0, data & 0xff);
102 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
103 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
104
105 /* Write high byte */
106 saa_writeb(SAA7134_GPIO_GPSTATUS0, data >> 8);
107 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
108 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
109
110 return 0;
111 }
112
113 static int gpio_read(struct saa7134_dev *dev, u8 addr, u16 *data)
114 {
115 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
116
117 /* Write HPI address */
118 saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
119 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
120 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
121
122 saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
123
124 /* Read low byte */
125 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
126 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
127 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
128 *data = saa_readb(SAA7134_GPIO_GPSTATUS0);
129 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
130
131 /* Read high byte */
132 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
133 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
134 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
135 *data |= saa_readb(SAA7134_GPIO_GPSTATUS0) << 8;
136 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
137
138 return 0;
139 }
140
141 static int saa7134_go7007_interface_reset(struct go7007 *go)
142 {
143 struct saa7134_go7007 *saa = go->hpi_context;
144 struct saa7134_dev *dev = saa->dev;
145 u32 status;
146 u16 intr_val, intr_data;
147 int count = 20;
148
149 saa_clearb(SAA7134_TS_PARALLEL, 0x80); /* Disable TS interface */
150 saa_writeb(SAA7134_GPIO_GPMODE2, 0xa4);
151 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
152
153 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
154 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_RESET);
155 msleep(1);
156 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
157 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
158 msleep(10);
159
160 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
161 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
162
163 status = saa_readb(SAA7134_GPIO_GPSTATUS2);
164 /*printk(KERN_DEBUG "status is %s\n", status & 0x40 ? "OK" : "not OK"); */
165
166 /* enter command mode...(?) */
167 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
168 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
169
170 do {
171 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
172 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
173 status = saa_readb(SAA7134_GPIO_GPSTATUS2);
174 /*printk(KERN_INFO "gpio is %08x\n", saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)); */
175 } while (--count > 0);
176
177 /* Wait for an interrupt to indicate successful hardware reset */
178 if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
179 (intr_val & ~0x1) != 0x55aa) {
180 printk(KERN_ERR
181 "saa7134-go7007: unable to reset the GO7007\n");
182 return -1;
183 }
184 return 0;
185 }
186
187 static int saa7134_go7007_write_interrupt(struct go7007 *go, int addr, int data)
188 {
189 struct saa7134_go7007 *saa = go->hpi_context;
190 struct saa7134_dev *dev = saa->dev;
191 int i;
192 u16 status_reg;
193
194 #ifdef GO7007_HPI_DEBUG
195 printk(KERN_DEBUG
196 "saa7134-go7007: WriteInterrupt: %04x %04x\n", addr, data);
197 #endif
198
199 for (i = 0; i < 100; ++i) {
200 gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
201 if (!(status_reg & 0x0010))
202 break;
203 msleep(10);
204 }
205 if (i == 100) {
206 printk(KERN_ERR
207 "saa7134-go7007: device is hung, status reg = 0x%04x\n",
208 status_reg);
209 return -1;
210 }
211 gpio_write(dev, HPI_ADDR_INTR_WR_PARAM, data);
212 gpio_write(dev, HPI_ADDR_INTR_WR_INDEX, addr);
213
214 return 0;
215 }
216
217 static int saa7134_go7007_read_interrupt(struct go7007 *go)
218 {
219 struct saa7134_go7007 *saa = go->hpi_context;
220 struct saa7134_dev *dev = saa->dev;
221
222 /* XXX we need to wait if there is no interrupt available */
223 go->interrupt_available = 1;
224 gpio_read(dev, HPI_ADDR_INTR_RET_VALUE, &go->interrupt_value);
225 gpio_read(dev, HPI_ADDR_INTR_RET_DATA, &go->interrupt_data);
226 #ifdef GO7007_HPI_DEBUG
227 printk(KERN_DEBUG "saa7134-go7007: ReadInterrupt: %04x %04x\n",
228 go->interrupt_value, go->interrupt_data);
229 #endif
230 return 0;
231 }
232
233 static void saa7134_go7007_irq_ts_done(struct saa7134_dev *dev,
234 unsigned long status)
235 {
236 struct go7007 *go = video_get_drvdata(dev->empress_dev);
237 struct saa7134_go7007 *saa = go->hpi_context;
238
239 if (!go->streaming)
240 return;
241 if (0 != (status & 0x000f0000))
242 printk(KERN_DEBUG "saa7134-go7007: irq: lost %ld\n",
243 (status >> 16) & 0x0f);
244 if (status & 0x100000) {
245 dma_sync_single_for_cpu(&dev->pci->dev,
246 saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
247 go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
248 saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
249 } else {
250 dma_sync_single_for_cpu(&dev->pci->dev,
251 saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
252 go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
253 saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
254 }
255 }
256
257 static int saa7134_go7007_stream_start(struct go7007 *go)
258 {
259 struct saa7134_go7007 *saa = go->hpi_context;
260 struct saa7134_dev *dev = saa->dev;
261
262 saa->top_dma = dma_map_page(&dev->pci->dev, virt_to_page(saa->top),
263 0, PAGE_SIZE, DMA_FROM_DEVICE);
264 if (!saa->top_dma)
265 return -ENOMEM;
266 saa->bottom_dma = dma_map_page(&dev->pci->dev,
267 virt_to_page(saa->bottom),
268 0, PAGE_SIZE, DMA_FROM_DEVICE);
269 if (!saa->bottom_dma) {
270 dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
271 DMA_FROM_DEVICE);
272 return -ENOMEM;
273 }
274
275 saa_writel(SAA7134_VIDEO_PORT_CTRL0 >> 2, 0xA300B000);
276 saa_writel(SAA7134_VIDEO_PORT_CTRL4 >> 2, 0x40000200);
277
278 /* Set HPI interface for video */
279 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
280 saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_VIDEO_BUFFER);
281 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
282 saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
283
284 /* Enable TS interface */
285 saa_writeb(SAA7134_TS_PARALLEL, 0xe6);
286
287 /* Reset TS interface */
288 saa_setb(SAA7134_TS_SERIAL1, 0x01);
289 saa_clearb(SAA7134_TS_SERIAL1, 0x01);
290
291 /* Set up transfer block size */
292 saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 128 - 1);
293 saa_writeb(SAA7134_TS_DMA0, (PAGE_SIZE >> 7) - 1);
294 saa_writeb(SAA7134_TS_DMA1, 0);
295 saa_writeb(SAA7134_TS_DMA2, 0);
296
297 /* Enable video streaming mode */
298 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_VIDEO);
299
300 saa_writel(SAA7134_RS_BA1(5), cpu_to_le32(saa->top_dma));
301 saa_writel(SAA7134_RS_BA2(5), cpu_to_le32(saa->bottom_dma));
302 saa_writel(SAA7134_RS_PITCH(5), 128);
303 saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_MAX);
304
305 /* Enable TS FIFO */
306 saa_setl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
307
308 /* Enable DMA IRQ */
309 saa_setl(SAA7134_IRQ1,
310 SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
311
312 return 0;
313 }
314
315 static int saa7134_go7007_stream_stop(struct go7007 *go)
316 {
317 struct saa7134_go7007 *saa = go->hpi_context;
318 struct saa7134_dev *dev;
319
320 if (!saa)
321 return -EINVAL;
322 dev = saa->dev;
323 if (!dev)
324 return -EINVAL;
325
326 /* Shut down TS FIFO */
327 saa_clearl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
328
329 /* Disable DMA IRQ */
330 saa_clearl(SAA7134_IRQ1,
331 SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
332
333 /* Disable TS interface */
334 saa_clearb(SAA7134_TS_PARALLEL, 0x80);
335
336 dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
337 DMA_FROM_DEVICE);
338 dma_unmap_page(&dev->pci->dev, saa->bottom_dma, PAGE_SIZE,
339 DMA_FROM_DEVICE);
340
341 return 0;
342 }
343
344 static int saa7134_go7007_send_firmware(struct go7007 *go, u8 *data, int len)
345 {
346 struct saa7134_go7007 *saa = go->hpi_context;
347 struct saa7134_dev *dev = saa->dev;
348 u16 status_reg;
349 int i;
350
351 #ifdef GO7007_HPI_DEBUG
352 printk(KERN_DEBUG "saa7134-go7007: DownloadBuffer "
353 "sending %d bytes\n", len);
354 #endif
355
356 while (len > 0) {
357 i = len > 64 ? 64 : len;
358 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
359 saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_INIT_BUFFER);
360 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
361 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
362 while (i-- > 0) {
363 saa_writeb(SAA7134_GPIO_GPSTATUS0, *data);
364 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
365 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
366 ++data;
367 --len;
368 }
369 for (i = 0; i < 100; ++i) {
370 gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
371 if (!(status_reg & 0x0002))
372 break;
373 }
374 if (i == 100) {
375 printk(KERN_ERR "saa7134-go7007: device is hung, "
376 "status reg = 0x%04x\n", status_reg);
377 return -1;
378 }
379 }
380 return 0;
381 }
382
383 static int saa7134_go7007_send_command(struct go7007 *go, unsigned int cmd,
384 void *arg)
385 {
386 struct saa7134_go7007 *saa = go->hpi_context;
387 struct saa7134_dev *dev = saa->dev;
388
389 switch (cmd) {
390 case VIDIOC_S_STD:
391 {
392 v4l2_std_id *std = arg;
393 return saa7134_s_std_internal(dev, NULL, std);
394 }
395 case VIDIOC_G_STD:
396 {
397 v4l2_std_id *std = arg;
398 *std = dev->tvnorm->id;
399 return 0;
400 }
401 case VIDIOC_QUERYCTRL:
402 {
403 struct v4l2_queryctrl *ctrl = arg;
404 if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
405 return saa7134_queryctrl(NULL, NULL, ctrl);
406 }
407 case VIDIOC_G_CTRL:
408 {
409 struct v4l2_control *ctrl = arg;
410 if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
411 return saa7134_g_ctrl_internal(dev, NULL, ctrl);
412 }
413 case VIDIOC_S_CTRL:
414 {
415 struct v4l2_control *ctrl = arg;
416 if (V4L2_CTRL_ID2CLASS(ctrl->id) == V4L2_CTRL_CLASS_USER)
417 return saa7134_s_ctrl_internal(dev, NULL, ctrl);
418 }
419 }
420 return -EINVAL;
421
422 }
423
424 static struct go7007_hpi_ops saa7134_go7007_hpi_ops = {
425 .interface_reset = saa7134_go7007_interface_reset,
426 .write_interrupt = saa7134_go7007_write_interrupt,
427 .read_interrupt = saa7134_go7007_read_interrupt,
428 .stream_start = saa7134_go7007_stream_start,
429 .stream_stop = saa7134_go7007_stream_stop,
430 .send_firmware = saa7134_go7007_send_firmware,
431 .send_command = saa7134_go7007_send_command,
432 };
433
434 /********************* Add/remove functions *********************/
435
436 static int saa7134_go7007_init(struct saa7134_dev *dev)
437 {
438 struct go7007 *go;
439 struct saa7134_go7007 *saa;
440
441 printk(KERN_DEBUG "saa7134-go7007: probing new SAA713X board\n");
442
443 saa = kzalloc(sizeof(struct saa7134_go7007), GFP_KERNEL);
444 if (saa == NULL)
445 return -ENOMEM;
446
447 /* Allocate a couple pages for receiving the compressed stream */
448 saa->top = (u8 *)get_zeroed_page(GFP_KERNEL);
449 if (!saa->top)
450 goto allocfail;
451 saa->bottom = (u8 *)get_zeroed_page(GFP_KERNEL);
452 if (!saa->bottom)
453 goto allocfail;
454
455 go = go7007_alloc(&board_voyager, &dev->pci->dev);
456 if (go == NULL)
457 goto allocfail;
458 go->board_id = GO7007_BOARDID_PCI_VOYAGER;
459 strncpy(go->name, saa7134_boards[dev->board].name, sizeof(go->name));
460 go->hpi_ops = &saa7134_go7007_hpi_ops;
461 go->hpi_context = saa;
462 saa->dev = dev;
463
464 /* Boot the GO7007 */
465 if (go7007_boot_encoder(go, go->board_info->flags &
466 GO7007_BOARD_USE_ONBOARD_I2C) < 0)
467 goto initfail;
468
469 /* Do any final GO7007 initialization, then register the
470 * V4L2 and ALSA interfaces */
471 if (go7007_register_encoder(go) < 0)
472 goto initfail;
473 dev->empress_dev = go->video_dev;
474 video_set_drvdata(dev->empress_dev, go);
475
476 go->status = STATUS_ONLINE;
477 return 0;
478
479 initfail:
480 go->status = STATUS_SHUTDOWN;
481 return 0;
482
483 allocfail:
484 if (saa->top)
485 free_page((unsigned long)saa->top);
486 if (saa->bottom)
487 free_page((unsigned long)saa->bottom);
488 kfree(saa);
489 return -ENOMEM;
490 }
491
492 static int saa7134_go7007_fini(struct saa7134_dev *dev)
493 {
494 struct go7007 *go;
495 struct saa7134_go7007 *saa;
496
497 if (NULL == dev->empress_dev)
498 return 0;
499
500 go = video_get_drvdata(dev->empress_dev);
501 saa = go->hpi_context;
502 go->status = STATUS_SHUTDOWN;
503 free_page((unsigned long)saa->top);
504 free_page((unsigned long)saa->bottom);
505 kfree(saa);
506 go7007_remove(go);
507 dev->empress_dev = NULL;
508
509 return 0;
510 }
511
512 static struct saa7134_mpeg_ops saa7134_go7007_ops = {
513 .type = SAA7134_MPEG_GO7007,
514 .init = saa7134_go7007_init,
515 .fini = saa7134_go7007_fini,
516 .irq_ts_done = saa7134_go7007_irq_ts_done,
517 };
518
519 static int __init saa7134_go7007_mod_init(void)
520 {
521 return saa7134_ts_register(&saa7134_go7007_ops);
522 }
523
524 static void __exit saa7134_go7007_mod_cleanup(void)
525 {
526 saa7134_ts_unregister(&saa7134_go7007_ops);
527 }
528
529 module_init(saa7134_go7007_mod_init);
530 module_exit(saa7134_go7007_mod_cleanup);
531
532 MODULE_LICENSE("GPL v2");
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