1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2005-2006 Micronas USA Inc.
4 */
5
6 #include "saa7134.h"
7 #include "saa7134-reg.h"
8
9 #include <linux/module.h>
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/spinlock.h>
13 #include <linux/wait.h>
14 #include <linux/list.h>
15 #include <linux/slab.h>
16 #include <linux/time.h>
17 #include <linux/mm.h>
18 #include <linux/usb.h>
19 #include <linux/i2c.h>
20 #include <asm/byteorder.h>
21 #include <media/v4l2-common.h>
22 #include <media/v4l2-device.h>
23 #include <media/v4l2-subdev.h>
24
25 #include "go7007-priv.h"
26
27 /*#define GO7007_HPI_DEBUG*/
28
29 enum hpi_address {
30 HPI_ADDR_VIDEO_BUFFER = 0xe4,
31 HPI_ADDR_INIT_BUFFER = 0xea,
32 HPI_ADDR_INTR_RET_VALUE = 0xee,
33 HPI_ADDR_INTR_RET_DATA = 0xec,
34 HPI_ADDR_INTR_STATUS = 0xf4,
35 HPI_ADDR_INTR_WR_PARAM = 0xf6,
36 HPI_ADDR_INTR_WR_INDEX = 0xf8,
37 };
38
39 enum gpio_command {
40 GPIO_COMMAND_RESET = 0x00, /* 000b */
41 GPIO_COMMAND_REQ1 = 0x04, /* 001b */
42 GPIO_COMMAND_WRITE = 0x20, /* 010b */
43 GPIO_COMMAND_REQ2 = 0x24, /* 011b */
44 GPIO_COMMAND_READ = 0x80, /* 100b */
45 GPIO_COMMAND_VIDEO = 0x84, /* 101b */
46 GPIO_COMMAND_IDLE = 0xA0, /* 110b */
47 GPIO_COMMAND_ADDR = 0xA4, /* 111b */
48 };
49
50 struct saa7134_go7007 {
51 struct v4l2_subdev sd;
52 struct saa7134_dev *dev;
53 u8 *top;
54 u8 *bottom;
55 dma_addr_t top_dma;
56 dma_addr_t bottom_dma;
57 };
58
to_state(struct v4l2_subdev * sd)59 static inline struct saa7134_go7007 *to_state(struct v4l2_subdev *sd)
60 {
61 return container_of(sd, struct saa7134_go7007, sd);
62 }
63
64 static const struct go7007_board_info board_voyager = {
65 .flags = 0,
66 .sensor_flags = GO7007_SENSOR_656 |
67 GO7007_SENSOR_VALID_ENABLE |
68 GO7007_SENSOR_TV |
69 GO7007_SENSOR_VBI,
70 .audio_flags = GO7007_AUDIO_I2S_MODE_1 |
71 GO7007_AUDIO_WORD_16,
72 .audio_rate = 48000,
73 .audio_bclk_div = 8,
74 .audio_main_div = 2,
75 .hpi_buffer_cap = 7,
76 .num_inputs = 1,
77 .inputs = {
78 {
79 .name = "SAA7134",
80 },
81 },
82 };
83
84 /********************* Driver for GPIO HPI interface *********************/
85
gpio_write(struct saa7134_dev * dev,u8 addr,u16 data)86 static int gpio_write(struct saa7134_dev *dev, u8 addr, u16 data)
87 {
88 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
89
90 /* Write HPI address */
91 saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
92 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
93 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
94
95 /* Write low byte */
96 saa_writeb(SAA7134_GPIO_GPSTATUS0, data & 0xff);
97 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
98 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
99
100 /* Write high byte */
101 saa_writeb(SAA7134_GPIO_GPSTATUS0, data >> 8);
102 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
103 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
104
105 return 0;
106 }
107
gpio_read(struct saa7134_dev * dev,u8 addr,u16 * data)108 static int gpio_read(struct saa7134_dev *dev, u8 addr, u16 *data)
109 {
110 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
111
112 /* Write HPI address */
113 saa_writeb(SAA7134_GPIO_GPSTATUS0, addr);
114 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
115 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
116
117 saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
118
119 /* Read low byte */
120 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
121 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
122 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
123 *data = saa_readb(SAA7134_GPIO_GPSTATUS0);
124 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
125
126 /* Read high byte */
127 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_READ);
128 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
129 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
130 *data |= saa_readb(SAA7134_GPIO_GPSTATUS0) << 8;
131 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
132
133 return 0;
134 }
135
saa7134_go7007_interface_reset(struct go7007 * go)136 static int saa7134_go7007_interface_reset(struct go7007 *go)
137 {
138 struct saa7134_go7007 *saa = go->hpi_context;
139 struct saa7134_dev *dev = saa->dev;
140 u16 intr_val, intr_data;
141 int count = 20;
142
143 saa_clearb(SAA7134_TS_PARALLEL, 0x80); /* Disable TS interface */
144 saa_writeb(SAA7134_GPIO_GPMODE2, 0xa4);
145 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
146
147 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
148 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_RESET);
149 msleep(1);
150 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
151 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
152 msleep(10);
153
154 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
155 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
156
157 saa_readb(SAA7134_GPIO_GPSTATUS2);
158 /*pr_debug("status is %s\n", saa_readb(SAA7134_GPIO_GPSTATUS2) & 0x40 ? "OK" : "not OK"); */
159
160 /* enter command mode...(?) */
161 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ1);
162 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_REQ2);
163
164 do {
165 saa_clearb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
166 saa_setb(SAA7134_GPIO_GPMODE3, SAA7134_GPIO_GPRESCAN);
167 saa_readb(SAA7134_GPIO_GPSTATUS2);
168 /*pr_info("gpio is %08x\n", saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2)); */
169 } while (--count > 0);
170
171 /* Wait for an interrupt to indicate successful hardware reset */
172 if (go7007_read_interrupt(go, &intr_val, &intr_data) < 0 ||
173 (intr_val & ~0x1) != 0x55aa) {
174 pr_err("saa7134-go7007: unable to reset the GO7007\n");
175 return -1;
176 }
177 return 0;
178 }
179
saa7134_go7007_write_interrupt(struct go7007 * go,int addr,int data)180 static int saa7134_go7007_write_interrupt(struct go7007 *go, int addr, int data)
181 {
182 struct saa7134_go7007 *saa = go->hpi_context;
183 struct saa7134_dev *dev = saa->dev;
184 int i;
185 u16 status_reg;
186
187 #ifdef GO7007_HPI_DEBUG
188 pr_debug("saa7134-go7007: WriteInterrupt: %04x %04x\n", addr, data);
189 #endif
190
191 for (i = 0; i < 100; ++i) {
192 gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
193 if (!(status_reg & 0x0010))
194 break;
195 msleep(10);
196 }
197 if (i == 100) {
198 pr_err("saa7134-go7007: device is hung, status reg = 0x%04x\n",
199 status_reg);
200 return -1;
201 }
202 gpio_write(dev, HPI_ADDR_INTR_WR_PARAM, data);
203 gpio_write(dev, HPI_ADDR_INTR_WR_INDEX, addr);
204
205 return 0;
206 }
207
saa7134_go7007_read_interrupt(struct go7007 * go)208 static int saa7134_go7007_read_interrupt(struct go7007 *go)
209 {
210 struct saa7134_go7007 *saa = go->hpi_context;
211 struct saa7134_dev *dev = saa->dev;
212
213 /* XXX we need to wait if there is no interrupt available */
214 go->interrupt_available = 1;
215 gpio_read(dev, HPI_ADDR_INTR_RET_VALUE, &go->interrupt_value);
216 gpio_read(dev, HPI_ADDR_INTR_RET_DATA, &go->interrupt_data);
217 #ifdef GO7007_HPI_DEBUG
218 pr_debug("saa7134-go7007: ReadInterrupt: %04x %04x\n",
219 go->interrupt_value, go->interrupt_data);
220 #endif
221 return 0;
222 }
223
saa7134_go7007_irq_ts_done(struct saa7134_dev * dev,unsigned long status)224 static void saa7134_go7007_irq_ts_done(struct saa7134_dev *dev,
225 unsigned long status)
226 {
227 struct go7007 *go = video_get_drvdata(dev->empress_dev);
228 struct saa7134_go7007 *saa = go->hpi_context;
229
230 if (!vb2_is_streaming(&go->vidq))
231 return;
232 if (0 != (status & 0x000f0000))
233 pr_debug("saa7134-go7007: irq: lost %ld\n",
234 (status >> 16) & 0x0f);
235 if (status & 0x100000) {
236 dma_sync_single_for_cpu(&dev->pci->dev,
237 saa->bottom_dma, PAGE_SIZE, DMA_FROM_DEVICE);
238 go7007_parse_video_stream(go, saa->bottom, PAGE_SIZE);
239 saa_writel(SAA7134_RS_BA2(5), saa->bottom_dma);
240 } else {
241 dma_sync_single_for_cpu(&dev->pci->dev,
242 saa->top_dma, PAGE_SIZE, DMA_FROM_DEVICE);
243 go7007_parse_video_stream(go, saa->top, PAGE_SIZE);
244 saa_writel(SAA7134_RS_BA1(5), saa->top_dma);
245 }
246 }
247
saa7134_go7007_stream_start(struct go7007 * go)248 static int saa7134_go7007_stream_start(struct go7007 *go)
249 {
250 struct saa7134_go7007 *saa = go->hpi_context;
251 struct saa7134_dev *dev = saa->dev;
252
253 saa->top_dma = dma_map_page(&dev->pci->dev, virt_to_page(saa->top),
254 0, PAGE_SIZE, DMA_FROM_DEVICE);
255 if (dma_mapping_error(&dev->pci->dev, saa->top_dma))
256 return -ENOMEM;
257 saa->bottom_dma = dma_map_page(&dev->pci->dev,
258 virt_to_page(saa->bottom),
259 0, PAGE_SIZE, DMA_FROM_DEVICE);
260 if (dma_mapping_error(&dev->pci->dev, saa->bottom_dma)) {
261 dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
262 DMA_FROM_DEVICE);
263 return -ENOMEM;
264 }
265
266 saa_writel(SAA7134_VIDEO_PORT_CTRL0 >> 2, 0xA300B000);
267 saa_writel(SAA7134_VIDEO_PORT_CTRL4 >> 2, 0x40000200);
268
269 /* Set HPI interface for video */
270 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
271 saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_VIDEO_BUFFER);
272 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
273 saa_writeb(SAA7134_GPIO_GPMODE0, 0x00);
274
275 /* Enable TS interface */
276 saa_writeb(SAA7134_TS_PARALLEL, 0xe6);
277
278 /* Reset TS interface */
279 saa_setb(SAA7134_TS_SERIAL1, 0x01);
280 saa_clearb(SAA7134_TS_SERIAL1, 0x01);
281
282 /* Set up transfer block size */
283 saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 128 - 1);
284 saa_writeb(SAA7134_TS_DMA0, ((PAGE_SIZE >> 7) - 1) & 0xff);
285 saa_writeb(SAA7134_TS_DMA1, (PAGE_SIZE >> 15) & 0xff);
286 saa_writeb(SAA7134_TS_DMA2, (PAGE_SIZE >> 31) & 0x3f);
287
288 /* Enable video streaming mode */
289 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_VIDEO);
290
291 saa_writel(SAA7134_RS_BA1(5), saa->top_dma);
292 saa_writel(SAA7134_RS_BA2(5), saa->bottom_dma);
293 saa_writel(SAA7134_RS_PITCH(5), 128);
294 saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_MAX);
295
296 /* Enable TS FIFO */
297 saa_setl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
298
299 /* Enable DMA IRQ */
300 saa_setl(SAA7134_IRQ1,
301 SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
302
303 return 0;
304 }
305
saa7134_go7007_stream_stop(struct go7007 * go)306 static int saa7134_go7007_stream_stop(struct go7007 *go)
307 {
308 struct saa7134_go7007 *saa = go->hpi_context;
309 struct saa7134_dev *dev;
310
311 if (!saa)
312 return -EINVAL;
313 dev = saa->dev;
314 if (!dev)
315 return -EINVAL;
316
317 /* Shut down TS FIFO */
318 saa_clearl(SAA7134_MAIN_CTRL, SAA7134_MAIN_CTRL_TE5);
319
320 /* Disable DMA IRQ */
321 saa_clearl(SAA7134_IRQ1,
322 SAA7134_IRQ1_INTE_RA2_1 | SAA7134_IRQ1_INTE_RA2_0);
323
324 /* Disable TS interface */
325 saa_clearb(SAA7134_TS_PARALLEL, 0x80);
326
327 dma_unmap_page(&dev->pci->dev, saa->top_dma, PAGE_SIZE,
328 DMA_FROM_DEVICE);
329 dma_unmap_page(&dev->pci->dev, saa->bottom_dma, PAGE_SIZE,
330 DMA_FROM_DEVICE);
331
332 return 0;
333 }
334
saa7134_go7007_send_firmware(struct go7007 * go,u8 * data,int len)335 static int saa7134_go7007_send_firmware(struct go7007 *go, u8 *data, int len)
336 {
337 struct saa7134_go7007 *saa = go->hpi_context;
338 struct saa7134_dev *dev = saa->dev;
339 u16 status_reg;
340 int i;
341
342 #ifdef GO7007_HPI_DEBUG
343 pr_debug("saa7134-go7007: DownloadBuffer sending %d bytes\n", len);
344 #endif
345
346 while (len > 0) {
347 i = len > 64 ? 64 : len;
348 saa_writeb(SAA7134_GPIO_GPMODE0, 0xff);
349 saa_writeb(SAA7134_GPIO_GPSTATUS0, HPI_ADDR_INIT_BUFFER);
350 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_ADDR);
351 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
352 while (i-- > 0) {
353 saa_writeb(SAA7134_GPIO_GPSTATUS0, *data);
354 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_WRITE);
355 saa_writeb(SAA7134_GPIO_GPSTATUS2, GPIO_COMMAND_IDLE);
356 ++data;
357 --len;
358 }
359 for (i = 0; i < 100; ++i) {
360 gpio_read(dev, HPI_ADDR_INTR_STATUS, &status_reg);
361 if (!(status_reg & 0x0002))
362 break;
363 }
364 if (i == 100) {
365 pr_err("saa7134-go7007: device is hung, status reg = 0x%04x\n",
366 status_reg);
367 return -1;
368 }
369 }
370 return 0;
371 }
372
373 static const struct go7007_hpi_ops saa7134_go7007_hpi_ops = {
374 .interface_reset = saa7134_go7007_interface_reset,
375 .write_interrupt = saa7134_go7007_write_interrupt,
376 .read_interrupt = saa7134_go7007_read_interrupt,
377 .stream_start = saa7134_go7007_stream_start,
378 .stream_stop = saa7134_go7007_stream_stop,
379 .send_firmware = saa7134_go7007_send_firmware,
380 };
381 MODULE_FIRMWARE("go7007/go7007tv.bin");
382
383 /* --------------------------------------------------------------------------*/
384
saa7134_go7007_s_std(struct v4l2_subdev * sd,v4l2_std_id norm)385 static int saa7134_go7007_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
386 {
387 #if 0
388 struct saa7134_go7007 *saa = to_state(sd);
389 struct saa7134_dev *dev = saa->dev;
390
391 return saa7134_s_std_internal(dev, NULL, norm);
392 #else
393 return 0;
394 #endif
395 }
396
397 static const struct v4l2_subdev_video_ops saa7134_go7007_video_ops = {
398 .s_std = saa7134_go7007_s_std,
399 };
400
401 static const struct v4l2_subdev_ops saa7134_go7007_sd_ops = {
402 .video = &saa7134_go7007_video_ops,
403 };
404
405 /* --------------------------------------------------------------------------*/
406
407
408 /********************* Add/remove functions *********************/
409
saa7134_go7007_init(struct saa7134_dev * dev)410 static int saa7134_go7007_init(struct saa7134_dev *dev)
411 {
412 struct go7007 *go;
413 struct saa7134_go7007 *saa;
414 struct v4l2_subdev *sd;
415
416 pr_debug("saa7134-go7007: probing new SAA713X board\n");
417
418 go = go7007_alloc(&board_voyager, &dev->pci->dev);
419 if (go == NULL)
420 return -ENOMEM;
421
422 saa = kzalloc(sizeof(struct saa7134_go7007), GFP_KERNEL);
423 if (saa == NULL) {
424 kfree(go);
425 return -ENOMEM;
426 }
427
428 go->board_id = GO7007_BOARDID_PCI_VOYAGER;
429 snprintf(go->bus_info, sizeof(go->bus_info), "PCI:%s", pci_name(dev->pci));
430 strscpy(go->name, saa7134_boards[dev->board].name, sizeof(go->name));
431 go->hpi_ops = &saa7134_go7007_hpi_ops;
432 go->hpi_context = saa;
433 saa->dev = dev;
434
435 /* Init the subdevice interface */
436 sd = &saa->sd;
437 v4l2_subdev_init(sd, &saa7134_go7007_sd_ops);
438 v4l2_set_subdevdata(sd, saa);
439 strscpy(sd->name, "saa7134-go7007", sizeof(sd->name));
440
441 /* Allocate a couple pages for receiving the compressed stream */
442 saa->top = (u8 *)get_zeroed_page(GFP_KERNEL);
443 if (!saa->top)
444 goto allocfail;
445 saa->bottom = (u8 *)get_zeroed_page(GFP_KERNEL);
446 if (!saa->bottom)
447 goto allocfail;
448
449 /* Boot the GO7007 */
450 if (go7007_boot_encoder(go, go->board_info->flags &
451 GO7007_BOARD_USE_ONBOARD_I2C) < 0)
452 goto allocfail;
453
454 /* Do any final GO7007 initialization, then register the
455 * V4L2 and ALSA interfaces */
456 if (go7007_register_encoder(go, go->board_info->num_i2c_devs) < 0)
457 goto allocfail;
458
459 /* Register the subdevice interface with the go7007 device */
460 if (v4l2_device_register_subdev(&go->v4l2_dev, sd) < 0)
461 pr_info("saa7134-go7007: register subdev failed\n");
462
463 dev->empress_dev = &go->vdev;
464
465 go->status = STATUS_ONLINE;
466 return 0;
467
468 allocfail:
469 if (saa->top)
470 free_page((unsigned long)saa->top);
471 if (saa->bottom)
472 free_page((unsigned long)saa->bottom);
473 kfree(saa);
474 kfree(go);
475 return -ENOMEM;
476 }
477
saa7134_go7007_fini(struct saa7134_dev * dev)478 static int saa7134_go7007_fini(struct saa7134_dev *dev)
479 {
480 struct go7007 *go;
481 struct saa7134_go7007 *saa;
482
483 if (NULL == dev->empress_dev)
484 return 0;
485
486 go = video_get_drvdata(dev->empress_dev);
487 if (go->audio_enabled)
488 go7007_snd_remove(go);
489
490 saa = go->hpi_context;
491 go->status = STATUS_SHUTDOWN;
492 free_page((unsigned long)saa->top);
493 free_page((unsigned long)saa->bottom);
494 v4l2_device_unregister_subdev(&saa->sd);
495 kfree(saa);
496 video_unregister_device(&go->vdev);
497
498 v4l2_device_put(&go->v4l2_dev);
499 dev->empress_dev = NULL;
500
501 return 0;
502 }
503
504 static struct saa7134_mpeg_ops saa7134_go7007_ops = {
505 .type = SAA7134_MPEG_GO7007,
506 .init = saa7134_go7007_init,
507 .fini = saa7134_go7007_fini,
508 .irq_ts_done = saa7134_go7007_irq_ts_done,
509 };
510
saa7134_go7007_mod_init(void)511 static int __init saa7134_go7007_mod_init(void)
512 {
513 return saa7134_ts_register(&saa7134_go7007_ops);
514 }
515
saa7134_go7007_mod_cleanup(void)516 static void __exit saa7134_go7007_mod_cleanup(void)
517 {
518 saa7134_ts_unregister(&saa7134_go7007_ops);
519 }
520
521 module_init(saa7134_go7007_mod_init);
522 module_exit(saa7134_go7007_mod_cleanup);
523
524 MODULE_LICENSE("GPL v2");
525
