1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * driver for Earthsoft PT1/PT2
4 *
5 * Copyright (C) 2009 HIRANO Takahito <hiranotaka@zng.info>
6 *
7 * based on pt1dvr - http://pt1dvr.sourceforge.jp/
8 * by Tomoaki Ishikawa <tomy@users.sourceforge.jp>
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/sched.h>
13 #include <linux/sched/signal.h>
14 #include <linux/hrtimer.h>
15 #include <linux/delay.h>
16 #include <linux/module.h>
17 #include <linux/slab.h>
18 #include <linux/vmalloc.h>
19 #include <linux/pci.h>
20 #include <linux/kthread.h>
21 #include <linux/freezer.h>
22 #include <linux/ratelimit.h>
23 #include <linux/string.h>
24 #include <linux/i2c.h>
25
26 #include <media/dvbdev.h>
27 #include <media/dvb_demux.h>
28 #include <media/dmxdev.h>
29 #include <media/dvb_net.h>
30 #include <media/dvb_frontend.h>
31
32 #include "tc90522.h"
33 #include "qm1d1b0004.h"
34 #include "dvb-pll.h"
35
36 #define DRIVER_NAME "earth-pt1"
37
38 #define PT1_PAGE_SHIFT 12
39 #define PT1_PAGE_SIZE (1 << PT1_PAGE_SHIFT)
40 #define PT1_NR_UPACKETS 1024
41 #define PT1_NR_BUFS 511
42
43 struct pt1_buffer_page {
44 __le32 upackets[PT1_NR_UPACKETS];
45 };
46
47 struct pt1_table_page {
48 __le32 next_pfn;
49 __le32 buf_pfns[PT1_NR_BUFS];
50 };
51
52 struct pt1_buffer {
53 struct pt1_buffer_page *page;
54 dma_addr_t addr;
55 };
56
57 struct pt1_table {
58 struct pt1_table_page *page;
59 dma_addr_t addr;
60 struct pt1_buffer bufs[PT1_NR_BUFS];
61 };
62
63 enum pt1_fe_clk {
64 PT1_FE_CLK_20MHZ, /* PT1 */
65 PT1_FE_CLK_25MHZ, /* PT2 */
66 };
67
68 #define PT1_NR_ADAPS 4
69
70 struct pt1_adapter;
71
72 struct pt1 {
73 struct pci_dev *pdev;
74 void __iomem *regs;
75 struct i2c_adapter i2c_adap;
76 int i2c_running;
77 struct pt1_adapter *adaps[PT1_NR_ADAPS];
78 struct pt1_table *tables;
79 struct task_struct *kthread;
80 int table_index;
81 int buf_index;
82
83 struct mutex lock;
84 int power;
85 int reset;
86
87 enum pt1_fe_clk fe_clk;
88 };
89
90 struct pt1_adapter {
91 struct pt1 *pt1;
92 int index;
93
94 u8 *buf;
95 int upacket_count;
96 int packet_count;
97 int st_count;
98
99 struct dvb_adapter adap;
100 struct dvb_demux demux;
101 int users;
102 struct dmxdev dmxdev;
103 struct dvb_frontend *fe;
104 struct i2c_client *demod_i2c_client;
105 struct i2c_client *tuner_i2c_client;
106 int (*orig_set_voltage)(struct dvb_frontend *fe,
107 enum fe_sec_voltage voltage);
108 int (*orig_sleep)(struct dvb_frontend *fe);
109 int (*orig_init)(struct dvb_frontend *fe);
110
111 enum fe_sec_voltage voltage;
112 int sleep;
113 };
114
115 union pt1_tuner_config {
116 struct qm1d1b0004_config qm1d1b0004;
117 struct dvb_pll_config tda6651;
118 };
119
120 struct pt1_config {
121 struct i2c_board_info demod_info;
122 struct tc90522_config demod_cfg;
123
124 struct i2c_board_info tuner_info;
125 union pt1_tuner_config tuner_cfg;
126 };
127
128 static const struct pt1_config pt1_configs[PT1_NR_ADAPS] = {
129 {
130 .demod_info = {
131 I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x1b),
132 },
133 .tuner_info = {
134 I2C_BOARD_INFO("qm1d1b0004", 0x60),
135 },
136 },
137 {
138 .demod_info = {
139 I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x1a),
140 },
141 .tuner_info = {
142 I2C_BOARD_INFO("tda665x_earthpt1", 0x61),
143 },
144 },
145 {
146 .demod_info = {
147 I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x19),
148 },
149 .tuner_info = {
150 I2C_BOARD_INFO("qm1d1b0004", 0x60),
151 },
152 },
153 {
154 .demod_info = {
155 I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x18),
156 },
157 .tuner_info = {
158 I2C_BOARD_INFO("tda665x_earthpt1", 0x61),
159 },
160 },
161 };
162
163 static const u8 va1j5jf8007s_20mhz_configs[][2] = {
164 {0x04, 0x02}, {0x0d, 0x55}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01},
165 {0x1c, 0x0a}, {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0},
166 {0x52, 0x89}, {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69},
167 {0x87, 0x04}, {0x8e, 0x02}, {0xa3, 0xf7}, {0xa5, 0xc0},
168 };
169
170 static const u8 va1j5jf8007s_25mhz_configs[][2] = {
171 {0x04, 0x02}, {0x11, 0x40}, {0x13, 0x80}, {0x17, 0x01}, {0x1c, 0x0a},
172 {0x1d, 0xaa}, {0x1e, 0x20}, {0x1f, 0x88}, {0x51, 0xb0}, {0x52, 0x89},
173 {0x53, 0xb3}, {0x5a, 0x2d}, {0x5b, 0xd3}, {0x85, 0x69}, {0x87, 0x04},
174 {0x8e, 0x26}, {0xa3, 0xf7}, {0xa5, 0xc0},
175 };
176
177 static const u8 va1j5jf8007t_20mhz_configs[][2] = {
178 {0x03, 0x90}, {0x14, 0x8f}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2},
179 {0x22, 0x83}, {0x31, 0x0d}, {0x32, 0xe0}, {0x39, 0xd3}, {0x3a, 0x00},
180 {0x3b, 0x11}, {0x3c, 0x3f},
181 {0x5c, 0x40}, {0x5f, 0x80}, {0x75, 0x02}, {0x76, 0x4e}, {0x77, 0x03},
182 {0xef, 0x01}
183 };
184
185 static const u8 va1j5jf8007t_25mhz_configs[][2] = {
186 {0x03, 0x90}, {0x1c, 0x2a}, {0x1d, 0xa8}, {0x1e, 0xa2}, {0x22, 0x83},
187 {0x3a, 0x04}, {0x3b, 0x11}, {0x3c, 0x3f}, {0x5c, 0x40}, {0x5f, 0x80},
188 {0x75, 0x0a}, {0x76, 0x4c}, {0x77, 0x03}, {0xef, 0x01}
189 };
190
config_demod(struct i2c_client * cl,enum pt1_fe_clk clk)191 static int config_demod(struct i2c_client *cl, enum pt1_fe_clk clk)
192 {
193 int ret;
194 bool is_sat;
195 const u8 (*cfg_data)[2];
196 int i, len;
197
198 is_sat = !strncmp(cl->name, TC90522_I2C_DEV_SAT,
199 strlen(TC90522_I2C_DEV_SAT));
200 if (is_sat) {
201 struct i2c_msg msg[2];
202 u8 wbuf, rbuf;
203
204 wbuf = 0x07;
205 msg[0].addr = cl->addr;
206 msg[0].flags = 0;
207 msg[0].len = 1;
208 msg[0].buf = &wbuf;
209
210 msg[1].addr = cl->addr;
211 msg[1].flags = I2C_M_RD;
212 msg[1].len = 1;
213 msg[1].buf = &rbuf;
214 ret = i2c_transfer(cl->adapter, msg, 2);
215 if (ret < 0)
216 return ret;
217 if (rbuf != 0x41)
218 return -EIO;
219 }
220
221 /* frontend init */
222 if (clk == PT1_FE_CLK_20MHZ) {
223 if (is_sat) {
224 cfg_data = va1j5jf8007s_20mhz_configs;
225 len = ARRAY_SIZE(va1j5jf8007s_20mhz_configs);
226 } else {
227 cfg_data = va1j5jf8007t_20mhz_configs;
228 len = ARRAY_SIZE(va1j5jf8007t_20mhz_configs);
229 }
230 } else {
231 if (is_sat) {
232 cfg_data = va1j5jf8007s_25mhz_configs;
233 len = ARRAY_SIZE(va1j5jf8007s_25mhz_configs);
234 } else {
235 cfg_data = va1j5jf8007t_25mhz_configs;
236 len = ARRAY_SIZE(va1j5jf8007t_25mhz_configs);
237 }
238 }
239
240 for (i = 0; i < len; i++) {
241 ret = i2c_master_send(cl, cfg_data[i], 2);
242 if (ret < 0)
243 return ret;
244 }
245 return 0;
246 }
247
248 /*
249 * Init registers for (each pair of) terrestrial/satellite block in demod.
250 * Note that resetting terr. block also resets its peer sat. block as well.
251 * This function must be called before configuring any demod block
252 * (before pt1_wakeup(), fe->ops.init()).
253 */
pt1_demod_block_init(struct pt1 * pt1)254 static int pt1_demod_block_init(struct pt1 *pt1)
255 {
256 struct i2c_client *cl;
257 u8 buf[2] = {0x01, 0x80};
258 int ret;
259 int i;
260
261 /* reset all terr. & sat. pairs first */
262 for (i = 0; i < PT1_NR_ADAPS; i++) {
263 cl = pt1->adaps[i]->demod_i2c_client;
264 if (strncmp(cl->name, TC90522_I2C_DEV_TER,
265 strlen(TC90522_I2C_DEV_TER)))
266 continue;
267
268 ret = i2c_master_send(cl, buf, 2);
269 if (ret < 0)
270 return ret;
271 usleep_range(30000, 50000);
272 }
273
274 for (i = 0; i < PT1_NR_ADAPS; i++) {
275 cl = pt1->adaps[i]->demod_i2c_client;
276 if (strncmp(cl->name, TC90522_I2C_DEV_SAT,
277 strlen(TC90522_I2C_DEV_SAT)))
278 continue;
279
280 ret = i2c_master_send(cl, buf, 2);
281 if (ret < 0)
282 return ret;
283 usleep_range(30000, 50000);
284 }
285 return 0;
286 }
287
pt1_write_reg(struct pt1 * pt1,int reg,u32 data)288 static void pt1_write_reg(struct pt1 *pt1, int reg, u32 data)
289 {
290 writel(data, pt1->regs + reg * 4);
291 }
292
pt1_read_reg(struct pt1 * pt1,int reg)293 static u32 pt1_read_reg(struct pt1 *pt1, int reg)
294 {
295 return readl(pt1->regs + reg * 4);
296 }
297
298 static unsigned int pt1_nr_tables = 8;
299 module_param_named(nr_tables, pt1_nr_tables, uint, 0);
300
pt1_increment_table_count(struct pt1 * pt1)301 static void pt1_increment_table_count(struct pt1 *pt1)
302 {
303 pt1_write_reg(pt1, 0, 0x00000020);
304 }
305
pt1_init_table_count(struct pt1 * pt1)306 static void pt1_init_table_count(struct pt1 *pt1)
307 {
308 pt1_write_reg(pt1, 0, 0x00000010);
309 }
310
pt1_register_tables(struct pt1 * pt1,u32 first_pfn)311 static void pt1_register_tables(struct pt1 *pt1, u32 first_pfn)
312 {
313 pt1_write_reg(pt1, 5, first_pfn);
314 pt1_write_reg(pt1, 0, 0x0c000040);
315 }
316
pt1_unregister_tables(struct pt1 * pt1)317 static void pt1_unregister_tables(struct pt1 *pt1)
318 {
319 pt1_write_reg(pt1, 0, 0x08080000);
320 }
321
pt1_sync(struct pt1 * pt1)322 static int pt1_sync(struct pt1 *pt1)
323 {
324 int i;
325 for (i = 0; i < 57; i++) {
326 if (pt1_read_reg(pt1, 0) & 0x20000000)
327 return 0;
328 pt1_write_reg(pt1, 0, 0x00000008);
329 }
330 dev_err(&pt1->pdev->dev, "could not sync\n");
331 return -EIO;
332 }
333
pt1_identify(struct pt1 * pt1)334 static u64 pt1_identify(struct pt1 *pt1)
335 {
336 int i;
337 u64 id = 0;
338 for (i = 0; i < 57; i++) {
339 id |= (u64)(pt1_read_reg(pt1, 0) >> 30 & 1) << i;
340 pt1_write_reg(pt1, 0, 0x00000008);
341 }
342 return id;
343 }
344
pt1_unlock(struct pt1 * pt1)345 static int pt1_unlock(struct pt1 *pt1)
346 {
347 int i;
348 pt1_write_reg(pt1, 0, 0x00000008);
349 for (i = 0; i < 3; i++) {
350 if (pt1_read_reg(pt1, 0) & 0x80000000)
351 return 0;
352 usleep_range(1000, 2000);
353 }
354 dev_err(&pt1->pdev->dev, "could not unlock\n");
355 return -EIO;
356 }
357
pt1_reset_pci(struct pt1 * pt1)358 static int pt1_reset_pci(struct pt1 *pt1)
359 {
360 int i;
361 pt1_write_reg(pt1, 0, 0x01010000);
362 pt1_write_reg(pt1, 0, 0x01000000);
363 for (i = 0; i < 10; i++) {
364 if (pt1_read_reg(pt1, 0) & 0x00000001)
365 return 0;
366 usleep_range(1000, 2000);
367 }
368 dev_err(&pt1->pdev->dev, "could not reset PCI\n");
369 return -EIO;
370 }
371
pt1_reset_ram(struct pt1 * pt1)372 static int pt1_reset_ram(struct pt1 *pt1)
373 {
374 int i;
375 pt1_write_reg(pt1, 0, 0x02020000);
376 pt1_write_reg(pt1, 0, 0x02000000);
377 for (i = 0; i < 10; i++) {
378 if (pt1_read_reg(pt1, 0) & 0x00000002)
379 return 0;
380 usleep_range(1000, 2000);
381 }
382 dev_err(&pt1->pdev->dev, "could not reset RAM\n");
383 return -EIO;
384 }
385
pt1_do_enable_ram(struct pt1 * pt1)386 static int pt1_do_enable_ram(struct pt1 *pt1)
387 {
388 int i, j;
389 u32 status;
390 status = pt1_read_reg(pt1, 0) & 0x00000004;
391 pt1_write_reg(pt1, 0, 0x00000002);
392 for (i = 0; i < 10; i++) {
393 for (j = 0; j < 1024; j++) {
394 if ((pt1_read_reg(pt1, 0) & 0x00000004) != status)
395 return 0;
396 }
397 usleep_range(1000, 2000);
398 }
399 dev_err(&pt1->pdev->dev, "could not enable RAM\n");
400 return -EIO;
401 }
402
pt1_enable_ram(struct pt1 * pt1)403 static int pt1_enable_ram(struct pt1 *pt1)
404 {
405 int i, ret;
406 int phase;
407 usleep_range(1000, 2000);
408 phase = pt1->pdev->device == 0x211a ? 128 : 166;
409 for (i = 0; i < phase; i++) {
410 ret = pt1_do_enable_ram(pt1);
411 if (ret < 0)
412 return ret;
413 }
414 return 0;
415 }
416
pt1_disable_ram(struct pt1 * pt1)417 static void pt1_disable_ram(struct pt1 *pt1)
418 {
419 pt1_write_reg(pt1, 0, 0x0b0b0000);
420 }
421
pt1_set_stream(struct pt1 * pt1,int index,int enabled)422 static void pt1_set_stream(struct pt1 *pt1, int index, int enabled)
423 {
424 pt1_write_reg(pt1, 2, 1 << (index + 8) | enabled << index);
425 }
426
pt1_init_streams(struct pt1 * pt1)427 static void pt1_init_streams(struct pt1 *pt1)
428 {
429 int i;
430 for (i = 0; i < PT1_NR_ADAPS; i++)
431 pt1_set_stream(pt1, i, 0);
432 }
433
pt1_filter(struct pt1 * pt1,struct pt1_buffer_page * page)434 static int pt1_filter(struct pt1 *pt1, struct pt1_buffer_page *page)
435 {
436 u32 upacket;
437 int i;
438 int index;
439 struct pt1_adapter *adap;
440 int offset;
441 u8 *buf;
442 int sc;
443
444 if (!page->upackets[PT1_NR_UPACKETS - 1])
445 return 0;
446
447 for (i = 0; i < PT1_NR_UPACKETS; i++) {
448 upacket = le32_to_cpu(page->upackets[i]);
449 index = (upacket >> 29) - 1;
450 if (index < 0 || index >= PT1_NR_ADAPS)
451 continue;
452
453 adap = pt1->adaps[index];
454 if (upacket >> 25 & 1)
455 adap->upacket_count = 0;
456 else if (!adap->upacket_count)
457 continue;
458
459 if (upacket >> 24 & 1)
460 printk_ratelimited(KERN_INFO "earth-pt1: device buffer overflowing. table[%d] buf[%d]\n",
461 pt1->table_index, pt1->buf_index);
462 sc = upacket >> 26 & 0x7;
463 if (adap->st_count != -1 && sc != ((adap->st_count + 1) & 0x7))
464 printk_ratelimited(KERN_INFO "earth-pt1: data loss in streamID(adapter)[%d]\n",
465 index);
466 adap->st_count = sc;
467
468 buf = adap->buf;
469 offset = adap->packet_count * 188 + adap->upacket_count * 3;
470 buf[offset] = upacket >> 16;
471 buf[offset + 1] = upacket >> 8;
472 if (adap->upacket_count != 62)
473 buf[offset + 2] = upacket;
474
475 if (++adap->upacket_count >= 63) {
476 adap->upacket_count = 0;
477 if (++adap->packet_count >= 21) {
478 dvb_dmx_swfilter_packets(&adap->demux, buf, 21);
479 adap->packet_count = 0;
480 }
481 }
482 }
483
484 page->upackets[PT1_NR_UPACKETS - 1] = 0;
485 return 1;
486 }
487
pt1_thread(void * data)488 static int pt1_thread(void *data)
489 {
490 struct pt1 *pt1;
491 struct pt1_buffer_page *page;
492 bool was_frozen;
493
494 #define PT1_FETCH_DELAY 10
495 #define PT1_FETCH_DELAY_DELTA 2
496
497 pt1 = data;
498 set_freezable();
499
500 while (!kthread_freezable_should_stop(&was_frozen)) {
501 if (was_frozen) {
502 int i;
503
504 for (i = 0; i < PT1_NR_ADAPS; i++)
505 pt1_set_stream(pt1, i, !!pt1->adaps[i]->users);
506 }
507
508 page = pt1->tables[pt1->table_index].bufs[pt1->buf_index].page;
509 if (!pt1_filter(pt1, page)) {
510 ktime_t delay;
511
512 delay = ktime_set(0, PT1_FETCH_DELAY * NSEC_PER_MSEC);
513 set_current_state(TASK_INTERRUPTIBLE);
514 schedule_hrtimeout_range(&delay,
515 PT1_FETCH_DELAY_DELTA * NSEC_PER_MSEC,
516 HRTIMER_MODE_REL);
517 continue;
518 }
519
520 if (++pt1->buf_index >= PT1_NR_BUFS) {
521 pt1_increment_table_count(pt1);
522 pt1->buf_index = 0;
523 if (++pt1->table_index >= pt1_nr_tables)
524 pt1->table_index = 0;
525 }
526 }
527
528 return 0;
529 }
530
pt1_free_page(struct pt1 * pt1,void * page,dma_addr_t addr)531 static void pt1_free_page(struct pt1 *pt1, void *page, dma_addr_t addr)
532 {
533 dma_free_coherent(&pt1->pdev->dev, PT1_PAGE_SIZE, page, addr);
534 }
535
pt1_alloc_page(struct pt1 * pt1,dma_addr_t * addrp,u32 * pfnp)536 static void *pt1_alloc_page(struct pt1 *pt1, dma_addr_t *addrp, u32 *pfnp)
537 {
538 void *page;
539 dma_addr_t addr;
540
541 page = dma_alloc_coherent(&pt1->pdev->dev, PT1_PAGE_SIZE, &addr,
542 GFP_KERNEL);
543 if (page == NULL)
544 return NULL;
545
546 BUG_ON(addr & (PT1_PAGE_SIZE - 1));
547 BUG_ON(addr >> PT1_PAGE_SHIFT >> 31 >> 1);
548
549 *addrp = addr;
550 *pfnp = addr >> PT1_PAGE_SHIFT;
551 return page;
552 }
553
pt1_cleanup_buffer(struct pt1 * pt1,struct pt1_buffer * buf)554 static void pt1_cleanup_buffer(struct pt1 *pt1, struct pt1_buffer *buf)
555 {
556 pt1_free_page(pt1, buf->page, buf->addr);
557 }
558
559 static int
pt1_init_buffer(struct pt1 * pt1,struct pt1_buffer * buf,u32 * pfnp)560 pt1_init_buffer(struct pt1 *pt1, struct pt1_buffer *buf, u32 *pfnp)
561 {
562 struct pt1_buffer_page *page;
563 dma_addr_t addr;
564
565 page = pt1_alloc_page(pt1, &addr, pfnp);
566 if (page == NULL)
567 return -ENOMEM;
568
569 page->upackets[PT1_NR_UPACKETS - 1] = 0;
570
571 buf->page = page;
572 buf->addr = addr;
573 return 0;
574 }
575
pt1_cleanup_table(struct pt1 * pt1,struct pt1_table * table)576 static void pt1_cleanup_table(struct pt1 *pt1, struct pt1_table *table)
577 {
578 int i;
579
580 for (i = 0; i < PT1_NR_BUFS; i++)
581 pt1_cleanup_buffer(pt1, &table->bufs[i]);
582
583 pt1_free_page(pt1, table->page, table->addr);
584 }
585
586 static int
pt1_init_table(struct pt1 * pt1,struct pt1_table * table,u32 * pfnp)587 pt1_init_table(struct pt1 *pt1, struct pt1_table *table, u32 *pfnp)
588 {
589 struct pt1_table_page *page;
590 dma_addr_t addr;
591 int i, ret;
592 u32 buf_pfn;
593
594 page = pt1_alloc_page(pt1, &addr, pfnp);
595 if (page == NULL)
596 return -ENOMEM;
597
598 for (i = 0; i < PT1_NR_BUFS; i++) {
599 ret = pt1_init_buffer(pt1, &table->bufs[i], &buf_pfn);
600 if (ret < 0)
601 goto err;
602
603 page->buf_pfns[i] = cpu_to_le32(buf_pfn);
604 }
605
606 pt1_increment_table_count(pt1);
607 table->page = page;
608 table->addr = addr;
609 return 0;
610
611 err:
612 while (i--)
613 pt1_cleanup_buffer(pt1, &table->bufs[i]);
614
615 pt1_free_page(pt1, page, addr);
616 return ret;
617 }
618
pt1_cleanup_tables(struct pt1 * pt1)619 static void pt1_cleanup_tables(struct pt1 *pt1)
620 {
621 struct pt1_table *tables;
622 int i;
623
624 tables = pt1->tables;
625 pt1_unregister_tables(pt1);
626
627 for (i = 0; i < pt1_nr_tables; i++)
628 pt1_cleanup_table(pt1, &tables[i]);
629
630 vfree(tables);
631 }
632
pt1_init_tables(struct pt1 * pt1)633 static int pt1_init_tables(struct pt1 *pt1)
634 {
635 struct pt1_table *tables;
636 int i, ret;
637 u32 first_pfn, pfn;
638
639 if (!pt1_nr_tables)
640 return 0;
641
642 tables = vmalloc(array_size(pt1_nr_tables, sizeof(struct pt1_table)));
643 if (tables == NULL)
644 return -ENOMEM;
645
646 pt1_init_table_count(pt1);
647
648 i = 0;
649 ret = pt1_init_table(pt1, &tables[0], &first_pfn);
650 if (ret)
651 goto err;
652 i++;
653
654 while (i < pt1_nr_tables) {
655 ret = pt1_init_table(pt1, &tables[i], &pfn);
656 if (ret)
657 goto err;
658 tables[i - 1].page->next_pfn = cpu_to_le32(pfn);
659 i++;
660 }
661
662 tables[pt1_nr_tables - 1].page->next_pfn = cpu_to_le32(first_pfn);
663
664 pt1_register_tables(pt1, first_pfn);
665 pt1->tables = tables;
666 return 0;
667
668 err:
669 while (i--)
670 pt1_cleanup_table(pt1, &tables[i]);
671
672 vfree(tables);
673 return ret;
674 }
675
pt1_start_polling(struct pt1 * pt1)676 static int pt1_start_polling(struct pt1 *pt1)
677 {
678 int ret = 0;
679
680 mutex_lock(&pt1->lock);
681 if (!pt1->kthread) {
682 pt1->kthread = kthread_run(pt1_thread, pt1, "earth-pt1");
683 if (IS_ERR(pt1->kthread)) {
684 ret = PTR_ERR(pt1->kthread);
685 pt1->kthread = NULL;
686 }
687 }
688 mutex_unlock(&pt1->lock);
689 return ret;
690 }
691
pt1_start_feed(struct dvb_demux_feed * feed)692 static int pt1_start_feed(struct dvb_demux_feed *feed)
693 {
694 struct pt1_adapter *adap;
695 adap = container_of(feed->demux, struct pt1_adapter, demux);
696 if (!adap->users++) {
697 int ret;
698
699 ret = pt1_start_polling(adap->pt1);
700 if (ret)
701 return ret;
702 pt1_set_stream(adap->pt1, adap->index, 1);
703 }
704 return 0;
705 }
706
pt1_stop_polling(struct pt1 * pt1)707 static void pt1_stop_polling(struct pt1 *pt1)
708 {
709 int i, count;
710
711 mutex_lock(&pt1->lock);
712 for (i = 0, count = 0; i < PT1_NR_ADAPS; i++)
713 count += pt1->adaps[i]->users;
714
715 if (count == 0 && pt1->kthread) {
716 kthread_stop(pt1->kthread);
717 pt1->kthread = NULL;
718 }
719 mutex_unlock(&pt1->lock);
720 }
721
pt1_stop_feed(struct dvb_demux_feed * feed)722 static int pt1_stop_feed(struct dvb_demux_feed *feed)
723 {
724 struct pt1_adapter *adap;
725 adap = container_of(feed->demux, struct pt1_adapter, demux);
726 if (!--adap->users) {
727 pt1_set_stream(adap->pt1, adap->index, 0);
728 pt1_stop_polling(adap->pt1);
729 }
730 return 0;
731 }
732
733 static void
pt1_update_power(struct pt1 * pt1)734 pt1_update_power(struct pt1 *pt1)
735 {
736 int bits;
737 int i;
738 struct pt1_adapter *adap;
739 static const int sleep_bits[] = {
740 1 << 4,
741 1 << 6 | 1 << 7,
742 1 << 5,
743 1 << 6 | 1 << 8,
744 };
745
746 bits = pt1->power | !pt1->reset << 3;
747 mutex_lock(&pt1->lock);
748 for (i = 0; i < PT1_NR_ADAPS; i++) {
749 adap = pt1->adaps[i];
750 switch (adap->voltage) {
751 case SEC_VOLTAGE_13: /* actually 11V */
752 bits |= 1 << 2;
753 break;
754 case SEC_VOLTAGE_18: /* actually 15V */
755 bits |= 1 << 1 | 1 << 2;
756 break;
757 default:
758 break;
759 }
760
761 /* XXX: The bits should be changed depending on adap->sleep. */
762 bits |= sleep_bits[i];
763 }
764 pt1_write_reg(pt1, 1, bits);
765 mutex_unlock(&pt1->lock);
766 }
767
pt1_set_voltage(struct dvb_frontend * fe,enum fe_sec_voltage voltage)768 static int pt1_set_voltage(struct dvb_frontend *fe, enum fe_sec_voltage voltage)
769 {
770 struct pt1_adapter *adap;
771
772 adap = container_of(fe->dvb, struct pt1_adapter, adap);
773 adap->voltage = voltage;
774 pt1_update_power(adap->pt1);
775
776 if (adap->orig_set_voltage)
777 return adap->orig_set_voltage(fe, voltage);
778 else
779 return 0;
780 }
781
pt1_sleep(struct dvb_frontend * fe)782 static int pt1_sleep(struct dvb_frontend *fe)
783 {
784 struct pt1_adapter *adap;
785 int ret;
786
787 adap = container_of(fe->dvb, struct pt1_adapter, adap);
788
789 ret = 0;
790 if (adap->orig_sleep)
791 ret = adap->orig_sleep(fe);
792
793 adap->sleep = 1;
794 pt1_update_power(adap->pt1);
795 return ret;
796 }
797
pt1_wakeup(struct dvb_frontend * fe)798 static int pt1_wakeup(struct dvb_frontend *fe)
799 {
800 struct pt1_adapter *adap;
801 int ret;
802
803 adap = container_of(fe->dvb, struct pt1_adapter, adap);
804 adap->sleep = 0;
805 pt1_update_power(adap->pt1);
806 usleep_range(1000, 2000);
807
808 ret = config_demod(adap->demod_i2c_client, adap->pt1->fe_clk);
809 if (ret == 0 && adap->orig_init)
810 ret = adap->orig_init(fe);
811 return ret;
812 }
813
pt1_free_adapter(struct pt1_adapter * adap)814 static void pt1_free_adapter(struct pt1_adapter *adap)
815 {
816 adap->demux.dmx.close(&adap->demux.dmx);
817 dvb_dmxdev_release(&adap->dmxdev);
818 dvb_dmx_release(&adap->demux);
819 dvb_unregister_adapter(&adap->adap);
820 free_page((unsigned long)adap->buf);
821 kfree(adap);
822 }
823
824 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
825
826 static struct pt1_adapter *
pt1_alloc_adapter(struct pt1 * pt1)827 pt1_alloc_adapter(struct pt1 *pt1)
828 {
829 struct pt1_adapter *adap;
830 void *buf;
831 struct dvb_adapter *dvb_adap;
832 struct dvb_demux *demux;
833 struct dmxdev *dmxdev;
834 int ret;
835
836 adap = kzalloc(sizeof(struct pt1_adapter), GFP_KERNEL);
837 if (!adap) {
838 ret = -ENOMEM;
839 goto err;
840 }
841
842 adap->pt1 = pt1;
843
844 adap->voltage = SEC_VOLTAGE_OFF;
845 adap->sleep = 1;
846
847 buf = (u8 *)__get_free_page(GFP_KERNEL);
848 if (!buf) {
849 ret = -ENOMEM;
850 goto err_kfree;
851 }
852
853 adap->buf = buf;
854 adap->upacket_count = 0;
855 adap->packet_count = 0;
856 adap->st_count = -1;
857
858 dvb_adap = &adap->adap;
859 dvb_adap->priv = adap;
860 ret = dvb_register_adapter(dvb_adap, DRIVER_NAME, THIS_MODULE,
861 &pt1->pdev->dev, adapter_nr);
862 if (ret < 0)
863 goto err_free_page;
864
865 demux = &adap->demux;
866 demux->dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
867 demux->priv = adap;
868 demux->feednum = 256;
869 demux->filternum = 256;
870 demux->start_feed = pt1_start_feed;
871 demux->stop_feed = pt1_stop_feed;
872 demux->write_to_decoder = NULL;
873 ret = dvb_dmx_init(demux);
874 if (ret < 0)
875 goto err_unregister_adapter;
876
877 dmxdev = &adap->dmxdev;
878 dmxdev->filternum = 256;
879 dmxdev->demux = &demux->dmx;
880 dmxdev->capabilities = 0;
881 ret = dvb_dmxdev_init(dmxdev, dvb_adap);
882 if (ret < 0)
883 goto err_dmx_release;
884
885 return adap;
886
887 err_dmx_release:
888 dvb_dmx_release(demux);
889 err_unregister_adapter:
890 dvb_unregister_adapter(dvb_adap);
891 err_free_page:
892 free_page((unsigned long)buf);
893 err_kfree:
894 kfree(adap);
895 err:
896 return ERR_PTR(ret);
897 }
898
pt1_cleanup_adapters(struct pt1 * pt1)899 static void pt1_cleanup_adapters(struct pt1 *pt1)
900 {
901 int i;
902 for (i = 0; i < PT1_NR_ADAPS; i++)
903 pt1_free_adapter(pt1->adaps[i]);
904 }
905
pt1_init_adapters(struct pt1 * pt1)906 static int pt1_init_adapters(struct pt1 *pt1)
907 {
908 int i;
909 struct pt1_adapter *adap;
910 int ret;
911
912 for (i = 0; i < PT1_NR_ADAPS; i++) {
913 adap = pt1_alloc_adapter(pt1);
914 if (IS_ERR(adap)) {
915 ret = PTR_ERR(adap);
916 goto err;
917 }
918
919 adap->index = i;
920 pt1->adaps[i] = adap;
921 }
922 return 0;
923
924 err:
925 while (i--)
926 pt1_free_adapter(pt1->adaps[i]);
927
928 return ret;
929 }
930
pt1_cleanup_frontend(struct pt1_adapter * adap)931 static void pt1_cleanup_frontend(struct pt1_adapter *adap)
932 {
933 dvb_unregister_frontend(adap->fe);
934 dvb_module_release(adap->tuner_i2c_client);
935 dvb_module_release(adap->demod_i2c_client);
936 }
937
pt1_init_frontend(struct pt1_adapter * adap,struct dvb_frontend * fe)938 static int pt1_init_frontend(struct pt1_adapter *adap, struct dvb_frontend *fe)
939 {
940 int ret;
941
942 adap->orig_set_voltage = fe->ops.set_voltage;
943 adap->orig_sleep = fe->ops.sleep;
944 adap->orig_init = fe->ops.init;
945 fe->ops.set_voltage = pt1_set_voltage;
946 fe->ops.sleep = pt1_sleep;
947 fe->ops.init = pt1_wakeup;
948
949 ret = dvb_register_frontend(&adap->adap, fe);
950 if (ret < 0)
951 return ret;
952
953 adap->fe = fe;
954 return 0;
955 }
956
pt1_cleanup_frontends(struct pt1 * pt1)957 static void pt1_cleanup_frontends(struct pt1 *pt1)
958 {
959 int i;
960 for (i = 0; i < PT1_NR_ADAPS; i++)
961 pt1_cleanup_frontend(pt1->adaps[i]);
962 }
963
pt1_init_frontends(struct pt1 * pt1)964 static int pt1_init_frontends(struct pt1 *pt1)
965 {
966 int i;
967 int ret;
968
969 for (i = 0; i < ARRAY_SIZE(pt1_configs); i++) {
970 const struct i2c_board_info *info;
971 struct tc90522_config dcfg;
972 struct i2c_client *cl;
973
974 info = &pt1_configs[i].demod_info;
975 dcfg = pt1_configs[i].demod_cfg;
976 dcfg.tuner_i2c = NULL;
977
978 ret = -ENODEV;
979 cl = dvb_module_probe("tc90522", info->type, &pt1->i2c_adap,
980 info->addr, &dcfg);
981 if (!cl)
982 goto fe_unregister;
983 pt1->adaps[i]->demod_i2c_client = cl;
984
985 if (!strncmp(cl->name, TC90522_I2C_DEV_SAT,
986 strlen(TC90522_I2C_DEV_SAT))) {
987 struct qm1d1b0004_config tcfg;
988
989 info = &pt1_configs[i].tuner_info;
990 tcfg = pt1_configs[i].tuner_cfg.qm1d1b0004;
991 tcfg.fe = dcfg.fe;
992 cl = dvb_module_probe("qm1d1b0004",
993 info->type, dcfg.tuner_i2c,
994 info->addr, &tcfg);
995 } else {
996 struct dvb_pll_config tcfg;
997
998 info = &pt1_configs[i].tuner_info;
999 tcfg = pt1_configs[i].tuner_cfg.tda6651;
1000 tcfg.fe = dcfg.fe;
1001 cl = dvb_module_probe("dvb_pll",
1002 info->type, dcfg.tuner_i2c,
1003 info->addr, &tcfg);
1004 }
1005 if (!cl)
1006 goto demod_release;
1007 pt1->adaps[i]->tuner_i2c_client = cl;
1008
1009 ret = pt1_init_frontend(pt1->adaps[i], dcfg.fe);
1010 if (ret < 0)
1011 goto tuner_release;
1012 }
1013
1014 ret = pt1_demod_block_init(pt1);
1015 if (ret < 0)
1016 goto fe_unregister;
1017
1018 return 0;
1019
1020 tuner_release:
1021 dvb_module_release(pt1->adaps[i]->tuner_i2c_client);
1022 demod_release:
1023 dvb_module_release(pt1->adaps[i]->demod_i2c_client);
1024 fe_unregister:
1025 dev_warn(&pt1->pdev->dev, "failed to init FE(%d).\n", i);
1026 i--;
1027 for (; i >= 0; i--) {
1028 dvb_unregister_frontend(pt1->adaps[i]->fe);
1029 dvb_module_release(pt1->adaps[i]->tuner_i2c_client);
1030 dvb_module_release(pt1->adaps[i]->demod_i2c_client);
1031 }
1032 return ret;
1033 }
1034
pt1_i2c_emit(struct pt1 * pt1,int addr,int busy,int read_enable,int clock,int data,int next_addr)1035 static void pt1_i2c_emit(struct pt1 *pt1, int addr, int busy, int read_enable,
1036 int clock, int data, int next_addr)
1037 {
1038 pt1_write_reg(pt1, 4, addr << 18 | busy << 13 | read_enable << 12 |
1039 !clock << 11 | !data << 10 | next_addr);
1040 }
1041
pt1_i2c_write_bit(struct pt1 * pt1,int addr,int * addrp,int data)1042 static void pt1_i2c_write_bit(struct pt1 *pt1, int addr, int *addrp, int data)
1043 {
1044 pt1_i2c_emit(pt1, addr, 1, 0, 0, data, addr + 1);
1045 pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, data, addr + 2);
1046 pt1_i2c_emit(pt1, addr + 2, 1, 0, 0, data, addr + 3);
1047 *addrp = addr + 3;
1048 }
1049
pt1_i2c_read_bit(struct pt1 * pt1,int addr,int * addrp)1050 static void pt1_i2c_read_bit(struct pt1 *pt1, int addr, int *addrp)
1051 {
1052 pt1_i2c_emit(pt1, addr, 1, 0, 0, 1, addr + 1);
1053 pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 1, addr + 2);
1054 pt1_i2c_emit(pt1, addr + 2, 1, 1, 1, 1, addr + 3);
1055 pt1_i2c_emit(pt1, addr + 3, 1, 0, 0, 1, addr + 4);
1056 *addrp = addr + 4;
1057 }
1058
pt1_i2c_write_byte(struct pt1 * pt1,int addr,int * addrp,int data)1059 static void pt1_i2c_write_byte(struct pt1 *pt1, int addr, int *addrp, int data)
1060 {
1061 int i;
1062 for (i = 0; i < 8; i++)
1063 pt1_i2c_write_bit(pt1, addr, &addr, data >> (7 - i) & 1);
1064 pt1_i2c_write_bit(pt1, addr, &addr, 1);
1065 *addrp = addr;
1066 }
1067
pt1_i2c_read_byte(struct pt1 * pt1,int addr,int * addrp,int last)1068 static void pt1_i2c_read_byte(struct pt1 *pt1, int addr, int *addrp, int last)
1069 {
1070 int i;
1071 for (i = 0; i < 8; i++)
1072 pt1_i2c_read_bit(pt1, addr, &addr);
1073 pt1_i2c_write_bit(pt1, addr, &addr, last);
1074 *addrp = addr;
1075 }
1076
pt1_i2c_prepare(struct pt1 * pt1,int addr,int * addrp)1077 static void pt1_i2c_prepare(struct pt1 *pt1, int addr, int *addrp)
1078 {
1079 pt1_i2c_emit(pt1, addr, 1, 0, 1, 1, addr + 1);
1080 pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 0, addr + 2);
1081 pt1_i2c_emit(pt1, addr + 2, 1, 0, 0, 0, addr + 3);
1082 *addrp = addr + 3;
1083 }
1084
1085 static void
pt1_i2c_write_msg(struct pt1 * pt1,int addr,int * addrp,struct i2c_msg * msg)1086 pt1_i2c_write_msg(struct pt1 *pt1, int addr, int *addrp, struct i2c_msg *msg)
1087 {
1088 int i;
1089 pt1_i2c_prepare(pt1, addr, &addr);
1090 pt1_i2c_write_byte(pt1, addr, &addr, msg->addr << 1);
1091 for (i = 0; i < msg->len; i++)
1092 pt1_i2c_write_byte(pt1, addr, &addr, msg->buf[i]);
1093 *addrp = addr;
1094 }
1095
1096 static void
pt1_i2c_read_msg(struct pt1 * pt1,int addr,int * addrp,struct i2c_msg * msg)1097 pt1_i2c_read_msg(struct pt1 *pt1, int addr, int *addrp, struct i2c_msg *msg)
1098 {
1099 int i;
1100 pt1_i2c_prepare(pt1, addr, &addr);
1101 pt1_i2c_write_byte(pt1, addr, &addr, msg->addr << 1 | 1);
1102 for (i = 0; i < msg->len; i++)
1103 pt1_i2c_read_byte(pt1, addr, &addr, i == msg->len - 1);
1104 *addrp = addr;
1105 }
1106
pt1_i2c_end(struct pt1 * pt1,int addr)1107 static int pt1_i2c_end(struct pt1 *pt1, int addr)
1108 {
1109 pt1_i2c_emit(pt1, addr, 1, 0, 0, 0, addr + 1);
1110 pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 0, addr + 2);
1111 pt1_i2c_emit(pt1, addr + 2, 1, 0, 1, 1, 0);
1112
1113 pt1_write_reg(pt1, 0, 0x00000004);
1114 do {
1115 if (signal_pending(current))
1116 return -EINTR;
1117 usleep_range(1000, 2000);
1118 } while (pt1_read_reg(pt1, 0) & 0x00000080);
1119 return 0;
1120 }
1121
pt1_i2c_begin(struct pt1 * pt1,int * addrp)1122 static void pt1_i2c_begin(struct pt1 *pt1, int *addrp)
1123 {
1124 int addr = 0;
1125
1126 pt1_i2c_emit(pt1, addr, 0, 0, 1, 1, addr /* itself */);
1127 addr = addr + 1;
1128
1129 if (!pt1->i2c_running) {
1130 pt1_i2c_emit(pt1, addr, 1, 0, 1, 1, addr + 1);
1131 pt1_i2c_emit(pt1, addr + 1, 1, 0, 1, 0, addr + 2);
1132 addr = addr + 2;
1133 pt1->i2c_running = 1;
1134 }
1135 *addrp = addr;
1136 }
1137
pt1_i2c_xfer(struct i2c_adapter * adap,struct i2c_msg * msgs,int num)1138 static int pt1_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
1139 {
1140 struct pt1 *pt1;
1141 int i;
1142 struct i2c_msg *msg, *next_msg;
1143 int addr, ret;
1144 u16 len;
1145 u32 word;
1146
1147 pt1 = i2c_get_adapdata(adap);
1148
1149 for (i = 0; i < num; i++) {
1150 msg = &msgs[i];
1151 if (msg->flags & I2C_M_RD)
1152 return -ENOTSUPP;
1153
1154 if (i + 1 < num)
1155 next_msg = &msgs[i + 1];
1156 else
1157 next_msg = NULL;
1158
1159 if (next_msg && next_msg->flags & I2C_M_RD) {
1160 i++;
1161
1162 len = next_msg->len;
1163 if (len > 4)
1164 return -ENOTSUPP;
1165
1166 pt1_i2c_begin(pt1, &addr);
1167 pt1_i2c_write_msg(pt1, addr, &addr, msg);
1168 pt1_i2c_read_msg(pt1, addr, &addr, next_msg);
1169 ret = pt1_i2c_end(pt1, addr);
1170 if (ret < 0)
1171 return ret;
1172
1173 word = pt1_read_reg(pt1, 2);
1174 while (len--) {
1175 next_msg->buf[len] = word;
1176 word >>= 8;
1177 }
1178 } else {
1179 pt1_i2c_begin(pt1, &addr);
1180 pt1_i2c_write_msg(pt1, addr, &addr, msg);
1181 ret = pt1_i2c_end(pt1, addr);
1182 if (ret < 0)
1183 return ret;
1184 }
1185 }
1186
1187 return num;
1188 }
1189
pt1_i2c_func(struct i2c_adapter * adap)1190 static u32 pt1_i2c_func(struct i2c_adapter *adap)
1191 {
1192 return I2C_FUNC_I2C;
1193 }
1194
1195 static const struct i2c_algorithm pt1_i2c_algo = {
1196 .master_xfer = pt1_i2c_xfer,
1197 .functionality = pt1_i2c_func,
1198 };
1199
pt1_i2c_wait(struct pt1 * pt1)1200 static void pt1_i2c_wait(struct pt1 *pt1)
1201 {
1202 int i;
1203 for (i = 0; i < 128; i++)
1204 pt1_i2c_emit(pt1, 0, 0, 0, 1, 1, 0);
1205 }
1206
pt1_i2c_init(struct pt1 * pt1)1207 static void pt1_i2c_init(struct pt1 *pt1)
1208 {
1209 int i;
1210 for (i = 0; i < 1024; i++)
1211 pt1_i2c_emit(pt1, i, 0, 0, 1, 1, 0);
1212 }
1213
1214 #ifdef CONFIG_PM_SLEEP
1215
pt1_suspend(struct device * dev)1216 static int pt1_suspend(struct device *dev)
1217 {
1218 struct pt1 *pt1 = dev_get_drvdata(dev);
1219
1220 pt1_init_streams(pt1);
1221 pt1_disable_ram(pt1);
1222 pt1->power = 0;
1223 pt1->reset = 1;
1224 pt1_update_power(pt1);
1225 return 0;
1226 }
1227
pt1_resume(struct device * dev)1228 static int pt1_resume(struct device *dev)
1229 {
1230 struct pt1 *pt1 = dev_get_drvdata(dev);
1231 int ret;
1232 int i;
1233
1234 pt1->power = 0;
1235 pt1->reset = 1;
1236 pt1_update_power(pt1);
1237
1238 pt1_i2c_init(pt1);
1239 pt1_i2c_wait(pt1);
1240
1241 ret = pt1_sync(pt1);
1242 if (ret < 0)
1243 goto resume_err;
1244
1245 pt1_identify(pt1);
1246
1247 ret = pt1_unlock(pt1);
1248 if (ret < 0)
1249 goto resume_err;
1250
1251 ret = pt1_reset_pci(pt1);
1252 if (ret < 0)
1253 goto resume_err;
1254
1255 ret = pt1_reset_ram(pt1);
1256 if (ret < 0)
1257 goto resume_err;
1258
1259 ret = pt1_enable_ram(pt1);
1260 if (ret < 0)
1261 goto resume_err;
1262
1263 pt1_init_streams(pt1);
1264
1265 pt1->power = 1;
1266 pt1_update_power(pt1);
1267 msleep(20);
1268
1269 pt1->reset = 0;
1270 pt1_update_power(pt1);
1271 usleep_range(1000, 2000);
1272
1273 ret = pt1_demod_block_init(pt1);
1274 if (ret < 0)
1275 goto resume_err;
1276
1277 for (i = 0; i < PT1_NR_ADAPS; i++)
1278 dvb_frontend_reinitialise(pt1->adaps[i]->fe);
1279
1280 pt1_init_table_count(pt1);
1281 for (i = 0; i < pt1_nr_tables; i++) {
1282 int j;
1283
1284 for (j = 0; j < PT1_NR_BUFS; j++)
1285 pt1->tables[i].bufs[j].page->upackets[PT1_NR_UPACKETS-1]
1286 = 0;
1287 pt1_increment_table_count(pt1);
1288 }
1289 pt1_register_tables(pt1, pt1->tables[0].addr >> PT1_PAGE_SHIFT);
1290
1291 pt1->table_index = 0;
1292 pt1->buf_index = 0;
1293 for (i = 0; i < PT1_NR_ADAPS; i++) {
1294 pt1->adaps[i]->upacket_count = 0;
1295 pt1->adaps[i]->packet_count = 0;
1296 pt1->adaps[i]->st_count = -1;
1297 }
1298
1299 return 0;
1300
1301 resume_err:
1302 dev_info(&pt1->pdev->dev, "failed to resume PT1/PT2.");
1303 return 0; /* resume anyway */
1304 }
1305
1306 #endif /* CONFIG_PM_SLEEP */
1307
pt1_remove(struct pci_dev * pdev)1308 static void pt1_remove(struct pci_dev *pdev)
1309 {
1310 struct pt1 *pt1;
1311 void __iomem *regs;
1312
1313 pt1 = pci_get_drvdata(pdev);
1314 regs = pt1->regs;
1315
1316 if (pt1->kthread)
1317 kthread_stop(pt1->kthread);
1318 pt1_cleanup_tables(pt1);
1319 pt1_cleanup_frontends(pt1);
1320 pt1_disable_ram(pt1);
1321 pt1->power = 0;
1322 pt1->reset = 1;
1323 pt1_update_power(pt1);
1324 pt1_cleanup_adapters(pt1);
1325 i2c_del_adapter(&pt1->i2c_adap);
1326 kfree(pt1);
1327 pci_iounmap(pdev, regs);
1328 pci_release_regions(pdev);
1329 pci_disable_device(pdev);
1330 }
1331
pt1_probe(struct pci_dev * pdev,const struct pci_device_id * ent)1332 static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1333 {
1334 int ret;
1335 void __iomem *regs;
1336 struct pt1 *pt1;
1337 struct i2c_adapter *i2c_adap;
1338
1339 ret = pci_enable_device(pdev);
1340 if (ret < 0)
1341 goto err;
1342
1343 ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
1344 if (ret < 0)
1345 goto err_pci_disable_device;
1346
1347 pci_set_master(pdev);
1348
1349 ret = pci_request_regions(pdev, DRIVER_NAME);
1350 if (ret < 0)
1351 goto err_pci_disable_device;
1352
1353 regs = pci_iomap(pdev, 0, 0);
1354 if (!regs) {
1355 ret = -EIO;
1356 goto err_pci_release_regions;
1357 }
1358
1359 pt1 = kzalloc(sizeof(struct pt1), GFP_KERNEL);
1360 if (!pt1) {
1361 ret = -ENOMEM;
1362 goto err_pci_iounmap;
1363 }
1364
1365 mutex_init(&pt1->lock);
1366 pt1->pdev = pdev;
1367 pt1->regs = regs;
1368 pt1->fe_clk = (pdev->device == 0x211a) ?
1369 PT1_FE_CLK_20MHZ : PT1_FE_CLK_25MHZ;
1370 pci_set_drvdata(pdev, pt1);
1371
1372 ret = pt1_init_adapters(pt1);
1373 if (ret < 0)
1374 goto err_kfree;
1375
1376 mutex_init(&pt1->lock);
1377
1378 pt1->power = 0;
1379 pt1->reset = 1;
1380 pt1_update_power(pt1);
1381
1382 i2c_adap = &pt1->i2c_adap;
1383 i2c_adap->algo = &pt1_i2c_algo;
1384 i2c_adap->algo_data = NULL;
1385 i2c_adap->dev.parent = &pdev->dev;
1386 strscpy(i2c_adap->name, DRIVER_NAME, sizeof(i2c_adap->name));
1387 i2c_set_adapdata(i2c_adap, pt1);
1388 ret = i2c_add_adapter(i2c_adap);
1389 if (ret < 0)
1390 goto err_pt1_cleanup_adapters;
1391
1392 pt1_i2c_init(pt1);
1393 pt1_i2c_wait(pt1);
1394
1395 ret = pt1_sync(pt1);
1396 if (ret < 0)
1397 goto err_i2c_del_adapter;
1398
1399 pt1_identify(pt1);
1400
1401 ret = pt1_unlock(pt1);
1402 if (ret < 0)
1403 goto err_i2c_del_adapter;
1404
1405 ret = pt1_reset_pci(pt1);
1406 if (ret < 0)
1407 goto err_i2c_del_adapter;
1408
1409 ret = pt1_reset_ram(pt1);
1410 if (ret < 0)
1411 goto err_i2c_del_adapter;
1412
1413 ret = pt1_enable_ram(pt1);
1414 if (ret < 0)
1415 goto err_i2c_del_adapter;
1416
1417 pt1_init_streams(pt1);
1418
1419 pt1->power = 1;
1420 pt1_update_power(pt1);
1421 msleep(20);
1422
1423 pt1->reset = 0;
1424 pt1_update_power(pt1);
1425 usleep_range(1000, 2000);
1426
1427 ret = pt1_init_frontends(pt1);
1428 if (ret < 0)
1429 goto err_pt1_disable_ram;
1430
1431 ret = pt1_init_tables(pt1);
1432 if (ret < 0)
1433 goto err_pt1_cleanup_frontends;
1434
1435 return 0;
1436
1437 err_pt1_cleanup_frontends:
1438 pt1_cleanup_frontends(pt1);
1439 err_pt1_disable_ram:
1440 pt1_disable_ram(pt1);
1441 pt1->power = 0;
1442 pt1->reset = 1;
1443 pt1_update_power(pt1);
1444 err_i2c_del_adapter:
1445 i2c_del_adapter(i2c_adap);
1446 err_pt1_cleanup_adapters:
1447 pt1_cleanup_adapters(pt1);
1448 err_kfree:
1449 kfree(pt1);
1450 err_pci_iounmap:
1451 pci_iounmap(pdev, regs);
1452 err_pci_release_regions:
1453 pci_release_regions(pdev);
1454 err_pci_disable_device:
1455 pci_disable_device(pdev);
1456 err:
1457 return ret;
1458
1459 }
1460
1461 static const struct pci_device_id pt1_id_table[] = {
1462 { PCI_DEVICE(0x10ee, 0x211a) },
1463 { PCI_DEVICE(0x10ee, 0x222a) },
1464 { },
1465 };
1466 MODULE_DEVICE_TABLE(pci, pt1_id_table);
1467
1468 static SIMPLE_DEV_PM_OPS(pt1_pm_ops, pt1_suspend, pt1_resume);
1469
1470 static struct pci_driver pt1_driver = {
1471 .name = DRIVER_NAME,
1472 .probe = pt1_probe,
1473 .remove = pt1_remove,
1474 .id_table = pt1_id_table,
1475 .driver.pm = &pt1_pm_ops,
1476 };
1477
1478 module_pci_driver(pt1_driver);
1479
1480 MODULE_AUTHOR("Takahito HIRANO <hiranotaka@zng.info>");
1481 MODULE_DESCRIPTION("Earthsoft PT1/PT2 Driver");
1482 MODULE_LICENSE("GPL");
1483