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1/*
2 * Driver for the Conexant CX25821 PCIe bridge
3 *
4 * Copyright (C) 2009 Conexant Systems Inc.
5 * Authors <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
6 * Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 *
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 */
23
24#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
25
26#include <linux/i2c.h>
27#include <linux/slab.h>
28#include "cx25821.h"
29#include "cx25821-sram.h"
30#include "cx25821-video.h"
31
32MODULE_DESCRIPTION("Driver for Athena cards");
33MODULE_AUTHOR("Shu Lin - Hiep Huynh");
34MODULE_LICENSE("GPL");
35
36static unsigned int debug;
37module_param(debug, int, 0644);
38MODULE_PARM_DESC(debug, "enable debug messages");
39
40static unsigned int card[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET };
41module_param_array(card, int, NULL, 0444);
42MODULE_PARM_DESC(card, "card type");
43
44static unsigned int cx25821_devcount;
45
46DEFINE_MUTEX(cx25821_devlist_mutex);
47EXPORT_SYMBOL(cx25821_devlist_mutex);
48LIST_HEAD(cx25821_devlist);
49EXPORT_SYMBOL(cx25821_devlist);
50
51struct sram_channel cx25821_sram_channels[] = {
52 [SRAM_CH00] = {
53 .i = SRAM_CH00,
54 .name = "VID A",
55 .cmds_start = VID_A_DOWN_CMDS,
56 .ctrl_start = VID_A_IQ,
57 .cdt = VID_A_CDT,
58 .fifo_start = VID_A_DOWN_CLUSTER_1,
59 .fifo_size = (VID_CLUSTER_SIZE << 2),
60 .ptr1_reg = DMA1_PTR1,
61 .ptr2_reg = DMA1_PTR2,
62 .cnt1_reg = DMA1_CNT1,
63 .cnt2_reg = DMA1_CNT2,
64 .int_msk = VID_A_INT_MSK,
65 .int_stat = VID_A_INT_STAT,
66 .int_mstat = VID_A_INT_MSTAT,
67 .dma_ctl = VID_DST_A_DMA_CTL,
68 .gpcnt_ctl = VID_DST_A_GPCNT_CTL,
69 .gpcnt = VID_DST_A_GPCNT,
70 .vip_ctl = VID_DST_A_VIP_CTL,
71 .pix_frmt = VID_DST_A_PIX_FRMT,
72 },
73
74 [SRAM_CH01] = {
75 .i = SRAM_CH01,
76 .name = "VID B",
77 .cmds_start = VID_B_DOWN_CMDS,
78 .ctrl_start = VID_B_IQ,
79 .cdt = VID_B_CDT,
80 .fifo_start = VID_B_DOWN_CLUSTER_1,
81 .fifo_size = (VID_CLUSTER_SIZE << 2),
82 .ptr1_reg = DMA2_PTR1,
83 .ptr2_reg = DMA2_PTR2,
84 .cnt1_reg = DMA2_CNT1,
85 .cnt2_reg = DMA2_CNT2,
86 .int_msk = VID_B_INT_MSK,
87 .int_stat = VID_B_INT_STAT,
88 .int_mstat = VID_B_INT_MSTAT,
89 .dma_ctl = VID_DST_B_DMA_CTL,
90 .gpcnt_ctl = VID_DST_B_GPCNT_CTL,
91 .gpcnt = VID_DST_B_GPCNT,
92 .vip_ctl = VID_DST_B_VIP_CTL,
93 .pix_frmt = VID_DST_B_PIX_FRMT,
94 },
95
96 [SRAM_CH02] = {
97 .i = SRAM_CH02,
98 .name = "VID C",
99 .cmds_start = VID_C_DOWN_CMDS,
100 .ctrl_start = VID_C_IQ,
101 .cdt = VID_C_CDT,
102 .fifo_start = VID_C_DOWN_CLUSTER_1,
103 .fifo_size = (VID_CLUSTER_SIZE << 2),
104 .ptr1_reg = DMA3_PTR1,
105 .ptr2_reg = DMA3_PTR2,
106 .cnt1_reg = DMA3_CNT1,
107 .cnt2_reg = DMA3_CNT2,
108 .int_msk = VID_C_INT_MSK,
109 .int_stat = VID_C_INT_STAT,
110 .int_mstat = VID_C_INT_MSTAT,
111 .dma_ctl = VID_DST_C_DMA_CTL,
112 .gpcnt_ctl = VID_DST_C_GPCNT_CTL,
113 .gpcnt = VID_DST_C_GPCNT,
114 .vip_ctl = VID_DST_C_VIP_CTL,
115 .pix_frmt = VID_DST_C_PIX_FRMT,
116 },
117
118 [SRAM_CH03] = {
119 .i = SRAM_CH03,
120 .name = "VID D",
121 .cmds_start = VID_D_DOWN_CMDS,
122 .ctrl_start = VID_D_IQ,
123 .cdt = VID_D_CDT,
124 .fifo_start = VID_D_DOWN_CLUSTER_1,
125 .fifo_size = (VID_CLUSTER_SIZE << 2),
126 .ptr1_reg = DMA4_PTR1,
127 .ptr2_reg = DMA4_PTR2,
128 .cnt1_reg = DMA4_CNT1,
129 .cnt2_reg = DMA4_CNT2,
130 .int_msk = VID_D_INT_MSK,
131 .int_stat = VID_D_INT_STAT,
132 .int_mstat = VID_D_INT_MSTAT,
133 .dma_ctl = VID_DST_D_DMA_CTL,
134 .gpcnt_ctl = VID_DST_D_GPCNT_CTL,
135 .gpcnt = VID_DST_D_GPCNT,
136 .vip_ctl = VID_DST_D_VIP_CTL,
137 .pix_frmt = VID_DST_D_PIX_FRMT,
138 },
139
140 [SRAM_CH04] = {
141 .i = SRAM_CH04,
142 .name = "VID E",
143 .cmds_start = VID_E_DOWN_CMDS,
144 .ctrl_start = VID_E_IQ,
145 .cdt = VID_E_CDT,
146 .fifo_start = VID_E_DOWN_CLUSTER_1,
147 .fifo_size = (VID_CLUSTER_SIZE << 2),
148 .ptr1_reg = DMA5_PTR1,
149 .ptr2_reg = DMA5_PTR2,
150 .cnt1_reg = DMA5_CNT1,
151 .cnt2_reg = DMA5_CNT2,
152 .int_msk = VID_E_INT_MSK,
153 .int_stat = VID_E_INT_STAT,
154 .int_mstat = VID_E_INT_MSTAT,
155 .dma_ctl = VID_DST_E_DMA_CTL,
156 .gpcnt_ctl = VID_DST_E_GPCNT_CTL,
157 .gpcnt = VID_DST_E_GPCNT,
158 .vip_ctl = VID_DST_E_VIP_CTL,
159 .pix_frmt = VID_DST_E_PIX_FRMT,
160 },
161
162 [SRAM_CH05] = {
163 .i = SRAM_CH05,
164 .name = "VID F",
165 .cmds_start = VID_F_DOWN_CMDS,
166 .ctrl_start = VID_F_IQ,
167 .cdt = VID_F_CDT,
168 .fifo_start = VID_F_DOWN_CLUSTER_1,
169 .fifo_size = (VID_CLUSTER_SIZE << 2),
170 .ptr1_reg = DMA6_PTR1,
171 .ptr2_reg = DMA6_PTR2,
172 .cnt1_reg = DMA6_CNT1,
173 .cnt2_reg = DMA6_CNT2,
174 .int_msk = VID_F_INT_MSK,
175 .int_stat = VID_F_INT_STAT,
176 .int_mstat = VID_F_INT_MSTAT,
177 .dma_ctl = VID_DST_F_DMA_CTL,
178 .gpcnt_ctl = VID_DST_F_GPCNT_CTL,
179 .gpcnt = VID_DST_F_GPCNT,
180 .vip_ctl = VID_DST_F_VIP_CTL,
181 .pix_frmt = VID_DST_F_PIX_FRMT,
182 },
183
184 [SRAM_CH06] = {
185 .i = SRAM_CH06,
186 .name = "VID G",
187 .cmds_start = VID_G_DOWN_CMDS,
188 .ctrl_start = VID_G_IQ,
189 .cdt = VID_G_CDT,
190 .fifo_start = VID_G_DOWN_CLUSTER_1,
191 .fifo_size = (VID_CLUSTER_SIZE << 2),
192 .ptr1_reg = DMA7_PTR1,
193 .ptr2_reg = DMA7_PTR2,
194 .cnt1_reg = DMA7_CNT1,
195 .cnt2_reg = DMA7_CNT2,
196 .int_msk = VID_G_INT_MSK,
197 .int_stat = VID_G_INT_STAT,
198 .int_mstat = VID_G_INT_MSTAT,
199 .dma_ctl = VID_DST_G_DMA_CTL,
200 .gpcnt_ctl = VID_DST_G_GPCNT_CTL,
201 .gpcnt = VID_DST_G_GPCNT,
202 .vip_ctl = VID_DST_G_VIP_CTL,
203 .pix_frmt = VID_DST_G_PIX_FRMT,
204 },
205
206 [SRAM_CH07] = {
207 .i = SRAM_CH07,
208 .name = "VID H",
209 .cmds_start = VID_H_DOWN_CMDS,
210 .ctrl_start = VID_H_IQ,
211 .cdt = VID_H_CDT,
212 .fifo_start = VID_H_DOWN_CLUSTER_1,
213 .fifo_size = (VID_CLUSTER_SIZE << 2),
214 .ptr1_reg = DMA8_PTR1,
215 .ptr2_reg = DMA8_PTR2,
216 .cnt1_reg = DMA8_CNT1,
217 .cnt2_reg = DMA8_CNT2,
218 .int_msk = VID_H_INT_MSK,
219 .int_stat = VID_H_INT_STAT,
220 .int_mstat = VID_H_INT_MSTAT,
221 .dma_ctl = VID_DST_H_DMA_CTL,
222 .gpcnt_ctl = VID_DST_H_GPCNT_CTL,
223 .gpcnt = VID_DST_H_GPCNT,
224 .vip_ctl = VID_DST_H_VIP_CTL,
225 .pix_frmt = VID_DST_H_PIX_FRMT,
226 },
227
228 [SRAM_CH08] = {
229 .name = "audio from",
230 .cmds_start = AUD_A_DOWN_CMDS,
231 .ctrl_start = AUD_A_IQ,
232 .cdt = AUD_A_CDT,
233 .fifo_start = AUD_A_DOWN_CLUSTER_1,
234 .fifo_size = AUDIO_CLUSTER_SIZE * 3,
235 .ptr1_reg = DMA17_PTR1,
236 .ptr2_reg = DMA17_PTR2,
237 .cnt1_reg = DMA17_CNT1,
238 .cnt2_reg = DMA17_CNT2,
239 },
240
241 [SRAM_CH09] = {
242 .i = SRAM_CH09,
243 .name = "VID Upstream I",
244 .cmds_start = VID_I_UP_CMDS,
245 .ctrl_start = VID_I_IQ,
246 .cdt = VID_I_CDT,
247 .fifo_start = VID_I_UP_CLUSTER_1,
248 .fifo_size = (VID_CLUSTER_SIZE << 2),
249 .ptr1_reg = DMA15_PTR1,
250 .ptr2_reg = DMA15_PTR2,
251 .cnt1_reg = DMA15_CNT1,
252 .cnt2_reg = DMA15_CNT2,
253 .int_msk = VID_I_INT_MSK,
254 .int_stat = VID_I_INT_STAT,
255 .int_mstat = VID_I_INT_MSTAT,
256 .dma_ctl = VID_SRC_I_DMA_CTL,
257 .gpcnt_ctl = VID_SRC_I_GPCNT_CTL,
258 .gpcnt = VID_SRC_I_GPCNT,
259
260 .vid_fmt_ctl = VID_SRC_I_FMT_CTL,
261 .vid_active_ctl1 = VID_SRC_I_ACTIVE_CTL1,
262 .vid_active_ctl2 = VID_SRC_I_ACTIVE_CTL2,
263 .vid_cdt_size = VID_SRC_I_CDT_SZ,
264 .irq_bit = 8,
265 },
266
267 [SRAM_CH10] = {
268 .i = SRAM_CH10,
269 .name = "VID Upstream J",
270 .cmds_start = VID_J_UP_CMDS,
271 .ctrl_start = VID_J_IQ,
272 .cdt = VID_J_CDT,
273 .fifo_start = VID_J_UP_CLUSTER_1,
274 .fifo_size = (VID_CLUSTER_SIZE << 2),
275 .ptr1_reg = DMA16_PTR1,
276 .ptr2_reg = DMA16_PTR2,
277 .cnt1_reg = DMA16_CNT1,
278 .cnt2_reg = DMA16_CNT2,
279 .int_msk = VID_J_INT_MSK,
280 .int_stat = VID_J_INT_STAT,
281 .int_mstat = VID_J_INT_MSTAT,
282 .dma_ctl = VID_SRC_J_DMA_CTL,
283 .gpcnt_ctl = VID_SRC_J_GPCNT_CTL,
284 .gpcnt = VID_SRC_J_GPCNT,
285
286 .vid_fmt_ctl = VID_SRC_J_FMT_CTL,
287 .vid_active_ctl1 = VID_SRC_J_ACTIVE_CTL1,
288 .vid_active_ctl2 = VID_SRC_J_ACTIVE_CTL2,
289 .vid_cdt_size = VID_SRC_J_CDT_SZ,
290 .irq_bit = 9,
291 },
292
293 [SRAM_CH11] = {
294 .i = SRAM_CH11,
295 .name = "Audio Upstream Channel B",
296 .cmds_start = AUD_B_UP_CMDS,
297 .ctrl_start = AUD_B_IQ,
298 .cdt = AUD_B_CDT,
299 .fifo_start = AUD_B_UP_CLUSTER_1,
300 .fifo_size = (AUDIO_CLUSTER_SIZE * 3),
301 .ptr1_reg = DMA22_PTR1,
302 .ptr2_reg = DMA22_PTR2,
303 .cnt1_reg = DMA22_CNT1,
304 .cnt2_reg = DMA22_CNT2,
305 .int_msk = AUD_B_INT_MSK,
306 .int_stat = AUD_B_INT_STAT,
307 .int_mstat = AUD_B_INT_MSTAT,
308 .dma_ctl = AUD_INT_DMA_CTL,
309 .gpcnt_ctl = AUD_B_GPCNT_CTL,
310 .gpcnt = AUD_B_GPCNT,
311 .aud_length = AUD_B_LNGTH,
312 .aud_cfg = AUD_B_CFG,
313 .fld_aud_fifo_en = FLD_AUD_SRC_B_FIFO_EN,
314 .fld_aud_risc_en = FLD_AUD_SRC_B_RISC_EN,
315 .irq_bit = 11,
316 },
317};
318EXPORT_SYMBOL(cx25821_sram_channels);
319
320struct sram_channel *channel0 = &cx25821_sram_channels[SRAM_CH00];
321struct sram_channel *channel1 = &cx25821_sram_channels[SRAM_CH01];
322struct sram_channel *channel2 = &cx25821_sram_channels[SRAM_CH02];
323struct sram_channel *channel3 = &cx25821_sram_channels[SRAM_CH03];
324struct sram_channel *channel4 = &cx25821_sram_channels[SRAM_CH04];
325struct sram_channel *channel5 = &cx25821_sram_channels[SRAM_CH05];
326struct sram_channel *channel6 = &cx25821_sram_channels[SRAM_CH06];
327struct sram_channel *channel7 = &cx25821_sram_channels[SRAM_CH07];
328struct sram_channel *channel9 = &cx25821_sram_channels[SRAM_CH09];
329struct sram_channel *channel10 = &cx25821_sram_channels[SRAM_CH10];
330struct sram_channel *channel11 = &cx25821_sram_channels[SRAM_CH11];
331
332struct cx25821_dmaqueue mpegq;
333
334static int cx25821_risc_decode(u32 risc)
335{
336 static const char * const instr[16] = {
337 [RISC_SYNC >> 28] = "sync",
338 [RISC_WRITE >> 28] = "write",
339 [RISC_WRITEC >> 28] = "writec",
340 [RISC_READ >> 28] = "read",
341 [RISC_READC >> 28] = "readc",
342 [RISC_JUMP >> 28] = "jump",
343 [RISC_SKIP >> 28] = "skip",
344 [RISC_WRITERM >> 28] = "writerm",
345 [RISC_WRITECM >> 28] = "writecm",
346 [RISC_WRITECR >> 28] = "writecr",
347 };
348 static const int incr[16] = {
349 [RISC_WRITE >> 28] = 3,
350 [RISC_JUMP >> 28] = 3,
351 [RISC_SKIP >> 28] = 1,
352 [RISC_SYNC >> 28] = 1,
353 [RISC_WRITERM >> 28] = 3,
354 [RISC_WRITECM >> 28] = 3,
355 [RISC_WRITECR >> 28] = 4,
356 };
357 static const char * const bits[] = {
358 "12", "13", "14", "resync",
359 "cnt0", "cnt1", "18", "19",
360 "20", "21", "22", "23",
361 "irq1", "irq2", "eol", "sol",
362 };
363 int i;
364
365 pr_cont("0x%08x [ %s",
366 risc, instr[risc >> 28] ? instr[risc >> 28] : "INVALID");
367 for (i = ARRAY_SIZE(bits) - 1; i >= 0; i--) {
368 if (risc & (1 << (i + 12)))
369 pr_cont(" %s", bits[i]);
370 }
371 pr_cont(" count=%d ]\n", risc & 0xfff);
372 return incr[risc >> 28] ? incr[risc >> 28] : 1;
373}
374
375static inline int i2c_slave_did_ack(struct i2c_adapter *i2c_adap)
376{
377 struct cx25821_i2c *bus = i2c_adap->algo_data;
378 struct cx25821_dev *dev = bus->dev;
379 return cx_read(bus->reg_stat) & 0x01;
380}
381
382static void cx25821_registers_init(struct cx25821_dev *dev)
383{
384 u32 tmp;
385
386 /* enable RUN_RISC in Pecos */
387 cx_write(DEV_CNTRL2, 0x20);
388
389 /* Set the master PCI interrupt masks to enable video, audio, MBIF,
390 * and GPIO interrupts
391 * I2C interrupt masking is handled by the I2C objects themselves. */
392 cx_write(PCI_INT_MSK, 0x2001FFFF);
393
394 tmp = cx_read(RDR_TLCTL0);
395 tmp &= ~FLD_CFG_RCB_CK_EN; /* Clear the RCB_CK_EN bit */
396 cx_write(RDR_TLCTL0, tmp);
397
398 /* PLL-A setting for the Audio Master Clock */
399 cx_write(PLL_A_INT_FRAC, 0x9807A58B);
400
401 /* PLL_A_POST = 0x1C, PLL_A_OUT_TO_PIN = 0x1 */
402 cx_write(PLL_A_POST_STAT_BIST, 0x8000019C);
403
404 /* clear reset bit [31] */
405 tmp = cx_read(PLL_A_INT_FRAC);
406 cx_write(PLL_A_INT_FRAC, tmp & 0x7FFFFFFF);
407
408 /* PLL-B setting for Mobilygen Host Bus Interface */
409 cx_write(PLL_B_INT_FRAC, 0x9883A86F);
410
411 /* PLL_B_POST = 0xD, PLL_B_OUT_TO_PIN = 0x0 */
412 cx_write(PLL_B_POST_STAT_BIST, 0x8000018D);
413
414 /* clear reset bit [31] */
415 tmp = cx_read(PLL_B_INT_FRAC);
416 cx_write(PLL_B_INT_FRAC, tmp & 0x7FFFFFFF);
417
418 /* PLL-C setting for video upstream channel */
419 cx_write(PLL_C_INT_FRAC, 0x96A0EA3F);
420
421 /* PLL_C_POST = 0x3, PLL_C_OUT_TO_PIN = 0x0 */
422 cx_write(PLL_C_POST_STAT_BIST, 0x80000103);
423
424 /* clear reset bit [31] */
425 tmp = cx_read(PLL_C_INT_FRAC);
426 cx_write(PLL_C_INT_FRAC, tmp & 0x7FFFFFFF);
427
428 /* PLL-D setting for audio upstream channel */
429 cx_write(PLL_D_INT_FRAC, 0x98757F5B);
430
431 /* PLL_D_POST = 0x13, PLL_D_OUT_TO_PIN = 0x0 */
432 cx_write(PLL_D_POST_STAT_BIST, 0x80000113);
433
434 /* clear reset bit [31] */
435 tmp = cx_read(PLL_D_INT_FRAC);
436 cx_write(PLL_D_INT_FRAC, tmp & 0x7FFFFFFF);
437
438 /* This selects the PLL C clock source for the video upstream channel
439 * I and J */
440 tmp = cx_read(VID_CH_CLK_SEL);
441 cx_write(VID_CH_CLK_SEL, (tmp & 0x00FFFFFF) | 0x24000000);
442
443 /* 656/VIP SRC Upstream Channel I & J and 7 - Host Bus Interface for
444 * channel A-C
445 * select 656/VIP DST for downstream Channel A - C */
446 tmp = cx_read(VID_CH_MODE_SEL);
447 /* cx_write( VID_CH_MODE_SEL, tmp | 0x1B0001FF); */
448 cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00);
449
450 /* enables 656 port I and J as output */
451 tmp = cx_read(CLK_RST);
452 /* use external ALT_PLL_REF pin as its reference clock instead */
453 tmp |= FLD_USE_ALT_PLL_REF;
454 cx_write(CLK_RST, tmp & ~(FLD_VID_I_CLK_NOE | FLD_VID_J_CLK_NOE));
455
456 mdelay(100);
457}
458
459int cx25821_sram_channel_setup(struct cx25821_dev *dev,
460 struct sram_channel *ch,
461 unsigned int bpl, u32 risc)
462{
463 unsigned int i, lines;
464 u32 cdt;
465
466 if (ch->cmds_start == 0) {
467 cx_write(ch->ptr1_reg, 0);
468 cx_write(ch->ptr2_reg, 0);
469 cx_write(ch->cnt2_reg, 0);
470 cx_write(ch->cnt1_reg, 0);
471 return 0;
472 }
473
474 bpl = (bpl + 7) & ~7; /* alignment */
475 cdt = ch->cdt;
476 lines = ch->fifo_size / bpl;
477
478 if (lines > 4)
479 lines = 4;
480
481 BUG_ON(lines < 2);
482
483 cx_write(8 + 0, RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
484 cx_write(8 + 4, 8);
485 cx_write(8 + 8, 0);
486
487 /* write CDT */
488 for (i = 0; i < lines; i++) {
489 cx_write(cdt + 16 * i, ch->fifo_start + bpl * i);
490 cx_write(cdt + 16 * i + 4, 0);
491 cx_write(cdt + 16 * i + 8, 0);
492 cx_write(cdt + 16 * i + 12, 0);
493 }
494
495 /* init the first cdt buffer */
496 for (i = 0; i < 128; i++)
497 cx_write(ch->fifo_start + 4 * i, i);
498
499 /* write CMDS */
500 if (ch->jumponly)
501 cx_write(ch->cmds_start + 0, 8);
502 else
503 cx_write(ch->cmds_start + 0, risc);
504
505 cx_write(ch->cmds_start + 4, 0); /* 64 bits 63-32 */
506 cx_write(ch->cmds_start + 8, cdt);
507 cx_write(ch->cmds_start + 12, (lines * 16) >> 3);
508 cx_write(ch->cmds_start + 16, ch->ctrl_start);
509
510 if (ch->jumponly)
511 cx_write(ch->cmds_start + 20, 0x80000000 | (64 >> 2));
512 else
513 cx_write(ch->cmds_start + 20, 64 >> 2);
514
515 for (i = 24; i < 80; i += 4)
516 cx_write(ch->cmds_start + i, 0);
517
518 /* fill registers */
519 cx_write(ch->ptr1_reg, ch->fifo_start);
520 cx_write(ch->ptr2_reg, cdt);
521 cx_write(ch->cnt2_reg, (lines * 16) >> 3);
522 cx_write(ch->cnt1_reg, (bpl >> 3) - 1);
523
524 return 0;
525}
526EXPORT_SYMBOL(cx25821_sram_channel_setup);
527
528int cx25821_sram_channel_setup_audio(struct cx25821_dev *dev,
529 struct sram_channel *ch,
530 unsigned int bpl, u32 risc)
531{
532 unsigned int i, lines;
533 u32 cdt;
534
535 if (ch->cmds_start == 0) {
536 cx_write(ch->ptr1_reg, 0);
537 cx_write(ch->ptr2_reg, 0);
538 cx_write(ch->cnt2_reg, 0);
539 cx_write(ch->cnt1_reg, 0);
540 return 0;
541 }
542
543 bpl = (bpl + 7) & ~7; /* alignment */
544 cdt = ch->cdt;
545 lines = ch->fifo_size / bpl;
546
547 if (lines > 3)
548 lines = 3; /* for AUDIO */
549
550 BUG_ON(lines < 2);
551
552 cx_write(8 + 0, RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
553 cx_write(8 + 4, 8);
554 cx_write(8 + 8, 0);
555
556 /* write CDT */
557 for (i = 0; i < lines; i++) {
558 cx_write(cdt + 16 * i, ch->fifo_start + bpl * i);
559 cx_write(cdt + 16 * i + 4, 0);
560 cx_write(cdt + 16 * i + 8, 0);
561 cx_write(cdt + 16 * i + 12, 0);
562 }
563
564 /* write CMDS */
565 if (ch->jumponly)
566 cx_write(ch->cmds_start + 0, 8);
567 else
568 cx_write(ch->cmds_start + 0, risc);
569
570 cx_write(ch->cmds_start + 4, 0); /* 64 bits 63-32 */
571 cx_write(ch->cmds_start + 8, cdt);
572 cx_write(ch->cmds_start + 12, (lines * 16) >> 3);
573 cx_write(ch->cmds_start + 16, ch->ctrl_start);
574
575 /* IQ size */
576 if (ch->jumponly)
577 cx_write(ch->cmds_start + 20, 0x80000000 | (64 >> 2));
578 else
579 cx_write(ch->cmds_start + 20, 64 >> 2);
580
581 /* zero out */
582 for (i = 24; i < 80; i += 4)
583 cx_write(ch->cmds_start + i, 0);
584
585 /* fill registers */
586 cx_write(ch->ptr1_reg, ch->fifo_start);
587 cx_write(ch->ptr2_reg, cdt);
588 cx_write(ch->cnt2_reg, (lines * 16) >> 3);
589 cx_write(ch->cnt1_reg, (bpl >> 3) - 1);
590
591 return 0;
592}
593EXPORT_SYMBOL(cx25821_sram_channel_setup_audio);
594
595void cx25821_sram_channel_dump(struct cx25821_dev *dev, struct sram_channel *ch)
596{
597 static char *name[] = {
598 "init risc lo",
599 "init risc hi",
600 "cdt base",
601 "cdt size",
602 "iq base",
603 "iq size",
604 "risc pc lo",
605 "risc pc hi",
606 "iq wr ptr",
607 "iq rd ptr",
608 "cdt current",
609 "pci target lo",
610 "pci target hi",
611 "line / byte",
612 };
613 u32 risc;
614 unsigned int i, j, n;
615
616 pr_warn("%s: %s - dma channel status dump\n", dev->name, ch->name);
617 for (i = 0; i < ARRAY_SIZE(name); i++)
618 pr_warn("cmds + 0x%2x: %-15s: 0x%08x\n",
619 i * 4, name[i], cx_read(ch->cmds_start + 4 * i));
620
621 j = i * 4;
622 for (i = 0; i < 4;) {
623 risc = cx_read(ch->cmds_start + 4 * (i + 14));
624 pr_warn("cmds + 0x%2x: risc%d: ", j + i * 4, i);
625 i += cx25821_risc_decode(risc);
626 }
627
628 for (i = 0; i < (64 >> 2); i += n) {
629 risc = cx_read(ch->ctrl_start + 4 * i);
630 /* No consideration for bits 63-32 */
631
632 pr_warn("ctrl + 0x%2x (0x%08x): iq %x: ",
633 i * 4, ch->ctrl_start + 4 * i, i);
634 n = cx25821_risc_decode(risc);
635 for (j = 1; j < n; j++) {
636 risc = cx_read(ch->ctrl_start + 4 * (i + j));
637 pr_warn("ctrl + 0x%2x : iq %x: 0x%08x [ arg #%d ]\n",
638 4 * (i + j), i + j, risc, j);
639 }
640 }
641
642 pr_warn(" : fifo: 0x%08x -> 0x%x\n",
643 ch->fifo_start, ch->fifo_start + ch->fifo_size);
644 pr_warn(" : ctrl: 0x%08x -> 0x%x\n",
645 ch->ctrl_start, ch->ctrl_start + 6 * 16);
646 pr_warn(" : ptr1_reg: 0x%08x\n",
647 cx_read(ch->ptr1_reg));
648 pr_warn(" : ptr2_reg: 0x%08x\n",
649 cx_read(ch->ptr2_reg));
650 pr_warn(" : cnt1_reg: 0x%08x\n",
651 cx_read(ch->cnt1_reg));
652 pr_warn(" : cnt2_reg: 0x%08x\n",
653 cx_read(ch->cnt2_reg));
654}
655EXPORT_SYMBOL(cx25821_sram_channel_dump);
656
657void cx25821_sram_channel_dump_audio(struct cx25821_dev *dev,
658 struct sram_channel *ch)
659{
660 static const char * const name[] = {
661 "init risc lo",
662 "init risc hi",
663 "cdt base",
664 "cdt size",
665 "iq base",
666 "iq size",
667 "risc pc lo",
668 "risc pc hi",
669 "iq wr ptr",
670 "iq rd ptr",
671 "cdt current",
672 "pci target lo",
673 "pci target hi",
674 "line / byte",
675 };
676
677 u32 risc, value, tmp;
678 unsigned int i, j, n;
679
680 pr_info("\n%s: %s - dma Audio channel status dump\n",
681 dev->name, ch->name);
682
683 for (i = 0; i < ARRAY_SIZE(name); i++)
684 pr_info("%s: cmds + 0x%2x: %-15s: 0x%08x\n",
685 dev->name, i * 4, name[i],
686 cx_read(ch->cmds_start + 4 * i));
687
688 j = i * 4;
689 for (i = 0; i < 4;) {
690 risc = cx_read(ch->cmds_start + 4 * (i + 14));
691 pr_warn("cmds + 0x%2x: risc%d: ", j + i * 4, i);
692 i += cx25821_risc_decode(risc);
693 }
694
695 for (i = 0; i < (64 >> 2); i += n) {
696 risc = cx_read(ch->ctrl_start + 4 * i);
697 /* No consideration for bits 63-32 */
698
699 pr_warn("ctrl + 0x%2x (0x%08x): iq %x: ",
700 i * 4, ch->ctrl_start + 4 * i, i);
701 n = cx25821_risc_decode(risc);
702
703 for (j = 1; j < n; j++) {
704 risc = cx_read(ch->ctrl_start + 4 * (i + j));
705 pr_warn("ctrl + 0x%2x : iq %x: 0x%08x [ arg #%d ]\n",
706 4 * (i + j), i + j, risc, j);
707 }
708 }
709
710 pr_warn(" : fifo: 0x%08x -> 0x%x\n",
711 ch->fifo_start, ch->fifo_start + ch->fifo_size);
712 pr_warn(" : ctrl: 0x%08x -> 0x%x\n",
713 ch->ctrl_start, ch->ctrl_start + 6 * 16);
714 pr_warn(" : ptr1_reg: 0x%08x\n",
715 cx_read(ch->ptr1_reg));
716 pr_warn(" : ptr2_reg: 0x%08x\n",
717 cx_read(ch->ptr2_reg));
718 pr_warn(" : cnt1_reg: 0x%08x\n",
719 cx_read(ch->cnt1_reg));
720 pr_warn(" : cnt2_reg: 0x%08x\n",
721 cx_read(ch->cnt2_reg));
722
723 for (i = 0; i < 4; i++) {
724 risc = cx_read(ch->cmds_start + 56 + (i * 4));
725 pr_warn("instruction %d = 0x%x\n", i, risc);
726 }
727
728 /* read data from the first cdt buffer */
729 risc = cx_read(AUD_A_CDT);
730 pr_warn("\nread cdt loc=0x%x\n", risc);
731 for (i = 0; i < 8; i++) {
732 n = cx_read(risc + i * 4);
733 pr_cont("0x%x ", n);
734 }
735 pr_cont("\n\n");
736
737 value = cx_read(CLK_RST);
738 CX25821_INFO(" CLK_RST = 0x%x\n\n", value);
739
740 value = cx_read(PLL_A_POST_STAT_BIST);
741 CX25821_INFO(" PLL_A_POST_STAT_BIST = 0x%x\n\n", value);
742 value = cx_read(PLL_A_INT_FRAC);
743 CX25821_INFO(" PLL_A_INT_FRAC = 0x%x\n\n", value);
744
745 value = cx_read(PLL_B_POST_STAT_BIST);
746 CX25821_INFO(" PLL_B_POST_STAT_BIST = 0x%x\n\n", value);
747 value = cx_read(PLL_B_INT_FRAC);
748 CX25821_INFO(" PLL_B_INT_FRAC = 0x%x\n\n", value);
749
750 value = cx_read(PLL_C_POST_STAT_BIST);
751 CX25821_INFO(" PLL_C_POST_STAT_BIST = 0x%x\n\n", value);
752 value = cx_read(PLL_C_INT_FRAC);
753 CX25821_INFO(" PLL_C_INT_FRAC = 0x%x\n\n", value);
754
755 value = cx_read(PLL_D_POST_STAT_BIST);
756 CX25821_INFO(" PLL_D_POST_STAT_BIST = 0x%x\n\n", value);
757 value = cx_read(PLL_D_INT_FRAC);
758 CX25821_INFO(" PLL_D_INT_FRAC = 0x%x\n\n", value);
759
760 value = cx25821_i2c_read(&dev->i2c_bus[0], AFE_AB_DIAG_CTRL, &tmp);
761 CX25821_INFO(" AFE_AB_DIAG_CTRL (0x10900090) = 0x%x\n\n", value);
762}
763EXPORT_SYMBOL(cx25821_sram_channel_dump_audio);
764
765static void cx25821_shutdown(struct cx25821_dev *dev)
766{
767 int i;
768
769 /* disable RISC controller */
770 cx_write(DEV_CNTRL2, 0);
771
772 /* Disable Video A/B activity */
773 for (i = 0; i < VID_CHANNEL_NUM; i++) {
774 cx_write(dev->channels[i].sram_channels->dma_ctl, 0);
775 cx_write(dev->channels[i].sram_channels->int_msk, 0);
776 }
777
778 for (i = VID_UPSTREAM_SRAM_CHANNEL_I;
779 i <= VID_UPSTREAM_SRAM_CHANNEL_J; i++) {
780 cx_write(dev->channels[i].sram_channels->dma_ctl, 0);
781 cx_write(dev->channels[i].sram_channels->int_msk, 0);
782 }
783
784 /* Disable Audio activity */
785 cx_write(AUD_INT_DMA_CTL, 0);
786
787 /* Disable Serial port */
788 cx_write(UART_CTL, 0);
789
790 /* Disable Interrupts */
791 cx_write(PCI_INT_MSK, 0);
792 cx_write(AUD_A_INT_MSK, 0);
793}
794
795void cx25821_set_pixel_format(struct cx25821_dev *dev, int channel_select,
796 u32 format)
797{
798 if (channel_select <= 7 && channel_select >= 0) {
799 cx_write(dev->channels[channel_select].sram_channels->pix_frmt,
800 format);
801 dev->channels[channel_select].pixel_formats = format;
802 }
803}
804
805static void cx25821_set_vip_mode(struct cx25821_dev *dev,
806 struct sram_channel *ch)
807{
808 cx_write(ch->pix_frmt, PIXEL_FRMT_422);
809 cx_write(ch->vip_ctl, PIXEL_ENGINE_VIP1);
810}
811
812static void cx25821_initialize(struct cx25821_dev *dev)
813{
814 int i;
815
816 dprintk(1, "%s()\n", __func__);
817
818 cx25821_shutdown(dev);
819 cx_write(PCI_INT_STAT, 0xffffffff);
820
821 for (i = 0; i < VID_CHANNEL_NUM; i++)
822 cx_write(dev->channels[i].sram_channels->int_stat, 0xffffffff);
823
824 cx_write(AUD_A_INT_STAT, 0xffffffff);
825 cx_write(AUD_B_INT_STAT, 0xffffffff);
826 cx_write(AUD_C_INT_STAT, 0xffffffff);
827 cx_write(AUD_D_INT_STAT, 0xffffffff);
828 cx_write(AUD_E_INT_STAT, 0xffffffff);
829
830 cx_write(CLK_DELAY, cx_read(CLK_DELAY) & 0x80000000);
831 cx_write(PAD_CTRL, 0x12); /* for I2C */
832 cx25821_registers_init(dev); /* init Pecos registers */
833 mdelay(100);
834
835 for (i = 0; i < VID_CHANNEL_NUM; i++) {
836 cx25821_set_vip_mode(dev, dev->channels[i].sram_channels);
837 cx25821_sram_channel_setup(dev, dev->channels[i].sram_channels,
838 1440, 0);
839 dev->channels[i].pixel_formats = PIXEL_FRMT_422;
840 dev->channels[i].use_cif_resolution = FALSE;
841 }
842
843 /* Probably only affect Downstream */
844 for (i = VID_UPSTREAM_SRAM_CHANNEL_I;
845 i <= VID_UPSTREAM_SRAM_CHANNEL_J; i++) {
846 cx25821_set_vip_mode(dev, dev->channels[i].sram_channels);
847 }
848
849 cx25821_sram_channel_setup_audio(dev,
850 dev->channels[SRAM_CH08].sram_channels, 128, 0);
851
852 cx25821_gpio_init(dev);
853}
854
855static int cx25821_get_resources(struct cx25821_dev *dev)
856{
857 if (request_mem_region(pci_resource_start(dev->pci, 0),
858 pci_resource_len(dev->pci, 0), dev->name))
859 return 0;
860
861 pr_err("%s: can't get MMIO memory @ 0x%llx\n",
862 dev->name, (unsigned long long)pci_resource_start(dev->pci, 0));
863
864 return -EBUSY;
865}
866
867static void cx25821_dev_checkrevision(struct cx25821_dev *dev)
868{
869 dev->hwrevision = cx_read(RDR_CFG2) & 0xff;
870
871 pr_info("%s(): Hardware revision = 0x%02x\n",
872 __func__, dev->hwrevision);
873}
874
875static void cx25821_iounmap(struct cx25821_dev *dev)
876{
877 if (dev == NULL)
878 return;
879
880 /* Releasing IO memory */
881 if (dev->lmmio != NULL) {
882 CX25821_INFO("Releasing lmmio.\n");
883 iounmap(dev->lmmio);
884 dev->lmmio = NULL;
885 }
886}
887
888static int cx25821_dev_setup(struct cx25821_dev *dev)
889{
890 int i;
891
892 pr_info("\n***********************************\n");
893 pr_info("cx25821 set up\n");
894 pr_info("***********************************\n\n");
895
896 mutex_init(&dev->lock);
897
898 atomic_inc(&dev->refcount);
899
900 dev->nr = ++cx25821_devcount;
901 sprintf(dev->name, "cx25821[%d]", dev->nr);
902
903 mutex_lock(&cx25821_devlist_mutex);
904 list_add_tail(&dev->devlist, &cx25821_devlist);
905 mutex_unlock(&cx25821_devlist_mutex);
906
907 if (dev->pci->device != 0x8210) {
908 pr_info("%s(): Exiting. Incorrect Hardware device = 0x%02x\n",
909 __func__, dev->pci->device);
910 return -1;
911 } else {
912 pr_info("Athena Hardware device = 0x%02x\n", dev->pci->device);
913 }
914
915 /* Apply a sensible clock frequency for the PCIe bridge */
916 dev->clk_freq = 28000000;
917 for (i = 0; i < MAX_VID_CHANNEL_NUM; i++)
918 dev->channels[i].sram_channels = &cx25821_sram_channels[i];
919
920 if (dev->nr > 1)
921 CX25821_INFO("dev->nr > 1!");
922
923 /* board config */
924 dev->board = 1; /* card[dev->nr]; */
925 dev->_max_num_decoders = MAX_DECODERS;
926
927 dev->pci_bus = dev->pci->bus->number;
928 dev->pci_slot = PCI_SLOT(dev->pci->devfn);
929 dev->pci_irqmask = 0x001f00;
930
931 /* External Master 1 Bus */
932 dev->i2c_bus[0].nr = 0;
933 dev->i2c_bus[0].dev = dev;
934 dev->i2c_bus[0].reg_stat = I2C1_STAT;
935 dev->i2c_bus[0].reg_ctrl = I2C1_CTRL;
936 dev->i2c_bus[0].reg_addr = I2C1_ADDR;
937 dev->i2c_bus[0].reg_rdata = I2C1_RDATA;
938 dev->i2c_bus[0].reg_wdata = I2C1_WDATA;
939 dev->i2c_bus[0].i2c_period = (0x07 << 24); /* 1.95MHz */
940
941 if (cx25821_get_resources(dev) < 0) {
942 pr_err("%s: No more PCIe resources for subsystem: %04x:%04x\n",
943 dev->name, dev->pci->subsystem_vendor,
944 dev->pci->subsystem_device);
945
946 cx25821_devcount--;
947 return -EBUSY;
948 }
949
950 /* PCIe stuff */
951 dev->base_io_addr = pci_resource_start(dev->pci, 0);
952
953 if (!dev->base_io_addr) {
954 CX25821_ERR("No PCI Memory resources, exiting!\n");
955 return -ENODEV;
956 }
957
958 dev->lmmio = ioremap(dev->base_io_addr, pci_resource_len(dev->pci, 0));
959
960 if (!dev->lmmio) {
961 CX25821_ERR("ioremap failed, maybe increasing __VMALLOC_RESERVE in page.h\n");
962 cx25821_iounmap(dev);
963 return -ENOMEM;
964 }
965
966 dev->bmmio = (u8 __iomem *) dev->lmmio;
967
968 pr_info("%s: subsystem: %04x:%04x, board: %s [card=%d,%s]\n",
969 dev->name, dev->pci->subsystem_vendor,
970 dev->pci->subsystem_device, cx25821_boards[dev->board].name,
971 dev->board, card[dev->nr] == dev->board ?
972 "insmod option" : "autodetected");
973
974 /* init hardware */
975 cx25821_initialize(dev);
976
977 cx25821_i2c_register(&dev->i2c_bus[0]);
978/* cx25821_i2c_register(&dev->i2c_bus[1]);
979 * cx25821_i2c_register(&dev->i2c_bus[2]); */
980
981 CX25821_INFO("i2c register! bus->i2c_rc = %d\n",
982 dev->i2c_bus[0].i2c_rc);
983
984 cx25821_card_setup(dev);
985
986 if (medusa_video_init(dev) < 0)
987 CX25821_ERR("%s(): Failed to initialize medusa!\n", __func__);
988
989 cx25821_video_register(dev);
990
991 /* register IOCTL device */
992 dev->ioctl_dev = cx25821_vdev_init(dev, dev->pci,
993 &cx25821_videoioctl_template, "video");
994
995 if (video_register_device
996 (dev->ioctl_dev, VFL_TYPE_GRABBER, VIDEO_IOCTL_CH) < 0) {
997 cx25821_videoioctl_unregister(dev);
998 pr_err("%s(): Failed to register video adapter for IOCTL, so unregistering videoioctl device\n",
999 __func__);
1000 }
1001
1002 cx25821_dev_checkrevision(dev);
1003 CX25821_INFO("setup done!\n");
1004
1005 return 0;
1006}
1007
1008void cx25821_start_upstream_video_ch1(struct cx25821_dev *dev,
1009 struct upstream_user_struct *up_data)
1010{
1011 dev->_isNTSC = !strcmp(dev->vid_stdname, "NTSC") ? 1 : 0;
1012
1013 dev->tvnorm = !dev->_isNTSC ? V4L2_STD_PAL_BG : V4L2_STD_NTSC_M;
1014 medusa_set_videostandard(dev);
1015
1016 cx25821_vidupstream_init_ch1(dev, dev->channel_select,
1017 dev->pixel_format);
1018}
1019
1020void cx25821_start_upstream_video_ch2(struct cx25821_dev *dev,
1021 struct upstream_user_struct *up_data)
1022{
1023 dev->_isNTSC_ch2 = !strcmp(dev->vid_stdname_ch2, "NTSC") ? 1 : 0;
1024
1025 dev->tvnorm = !dev->_isNTSC_ch2 ? V4L2_STD_PAL_BG : V4L2_STD_NTSC_M;
1026 medusa_set_videostandard(dev);
1027
1028 cx25821_vidupstream_init_ch2(dev, dev->channel_select_ch2,
1029 dev->pixel_format_ch2);
1030}
1031
1032void cx25821_start_upstream_audio(struct cx25821_dev *dev,
1033 struct upstream_user_struct *up_data)
1034{
1035 cx25821_audio_upstream_init(dev, AUDIO_UPSTREAM_SRAM_CHANNEL_B);
1036}
1037
1038void cx25821_dev_unregister(struct cx25821_dev *dev)
1039{
1040 int i;
1041
1042 if (!dev->base_io_addr)
1043 return;
1044
1045 cx25821_free_mem_upstream_ch1(dev);
1046 cx25821_free_mem_upstream_ch2(dev);
1047 cx25821_free_mem_upstream_audio(dev);
1048
1049 release_mem_region(dev->base_io_addr, pci_resource_len(dev->pci, 0));
1050
1051 if (!atomic_dec_and_test(&dev->refcount))
1052 return;
1053
1054 for (i = 0; i < VID_CHANNEL_NUM; i++)
1055 cx25821_video_unregister(dev, i);
1056
1057 for (i = VID_UPSTREAM_SRAM_CHANNEL_I;
1058 i <= AUDIO_UPSTREAM_SRAM_CHANNEL_B; i++) {
1059 cx25821_video_unregister(dev, i);
1060 }
1061
1062 cx25821_videoioctl_unregister(dev);
1063
1064 cx25821_i2c_unregister(&dev->i2c_bus[0]);
1065 cx25821_iounmap(dev);
1066}
1067EXPORT_SYMBOL(cx25821_dev_unregister);
1068
1069static __le32 *cx25821_risc_field(__le32 * rp, struct scatterlist *sglist,
1070 unsigned int offset, u32 sync_line,
1071 unsigned int bpl, unsigned int padding,
1072 unsigned int lines)
1073{
1074 struct scatterlist *sg;
1075 unsigned int line, todo;
1076
1077 /* sync instruction */
1078 if (sync_line != NO_SYNC_LINE)
1079 *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
1080
1081 /* scan lines */
1082 sg = sglist;
1083 for (line = 0; line < lines; line++) {
1084 while (offset && offset >= sg_dma_len(sg)) {
1085 offset -= sg_dma_len(sg);
1086 sg++;
1087 }
1088 if (bpl <= sg_dma_len(sg) - offset) {
1089 /* fits into current chunk */
1090 *(rp++) = cpu_to_le32(RISC_WRITE | RISC_SOL | RISC_EOL |
1091 bpl);
1092 *(rp++) = cpu_to_le32(sg_dma_address(sg) + offset);
1093 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1094 offset += bpl;
1095 } else {
1096 /* scanline needs to be split */
1097 todo = bpl;
1098 *(rp++) = cpu_to_le32(RISC_WRITE | RISC_SOL |
1099 (sg_dma_len(sg) - offset));
1100 *(rp++) = cpu_to_le32(sg_dma_address(sg) + offset);
1101 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1102 todo -= (sg_dma_len(sg) - offset);
1103 offset = 0;
1104 sg++;
1105 while (todo > sg_dma_len(sg)) {
1106 *(rp++) = cpu_to_le32(RISC_WRITE |
1107 sg_dma_len(sg));
1108 *(rp++) = cpu_to_le32(sg_dma_address(sg));
1109 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1110 todo -= sg_dma_len(sg);
1111 sg++;
1112 }
1113 *(rp++) = cpu_to_le32(RISC_WRITE | RISC_EOL | todo);
1114 *(rp++) = cpu_to_le32(sg_dma_address(sg));
1115 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1116 offset += todo;
1117 }
1118
1119 offset += padding;
1120 }
1121
1122 return rp;
1123}
1124
1125int cx25821_risc_buffer(struct pci_dev *pci, struct btcx_riscmem *risc,
1126 struct scatterlist *sglist, unsigned int top_offset,
1127 unsigned int bottom_offset, unsigned int bpl,
1128 unsigned int padding, unsigned int lines)
1129{
1130 u32 instructions;
1131 u32 fields;
1132 __le32 *rp;
1133 int rc;
1134
1135 fields = 0;
1136 if (UNSET != top_offset)
1137 fields++;
1138 if (UNSET != bottom_offset)
1139 fields++;
1140
1141 /* estimate risc mem: worst case is one write per page border +
1142 one write per scan line + syncs + jump (all 2 dwords). Padding
1143 can cause next bpl to start close to a page border. First DMA
1144 region may be smaller than PAGE_SIZE */
1145 /* write and jump need and extra dword */
1146 instructions = fields * (1 + ((bpl + padding) * lines) / PAGE_SIZE +
1147 lines);
1148 instructions += 2;
1149 rc = btcx_riscmem_alloc(pci, risc, instructions * 12);
1150
1151 if (rc < 0)
1152 return rc;
1153
1154 /* write risc instructions */
1155 rp = risc->cpu;
1156
1157 if (UNSET != top_offset) {
1158 rp = cx25821_risc_field(rp, sglist, top_offset, 0, bpl, padding,
1159 lines);
1160 }
1161
1162 if (UNSET != bottom_offset) {
1163 rp = cx25821_risc_field(rp, sglist, bottom_offset, 0x200, bpl,
1164 padding, lines);
1165 }
1166
1167 /* save pointer to jmp instruction address */
1168 risc->jmp = rp;
1169 BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
1170
1171 return 0;
1172}
1173
1174static __le32 *cx25821_risc_field_audio(__le32 * rp, struct scatterlist *sglist,
1175 unsigned int offset, u32 sync_line,
1176 unsigned int bpl, unsigned int padding,
1177 unsigned int lines, unsigned int lpi)
1178{
1179 struct scatterlist *sg;
1180 unsigned int line, todo, sol;
1181
1182 /* sync instruction */
1183 if (sync_line != NO_SYNC_LINE)
1184 *(rp++) = cpu_to_le32(RISC_RESYNC | sync_line);
1185
1186 /* scan lines */
1187 sg = sglist;
1188 for (line = 0; line < lines; line++) {
1189 while (offset && offset >= sg_dma_len(sg)) {
1190 offset -= sg_dma_len(sg);
1191 sg++;
1192 }
1193
1194 if (lpi && line > 0 && !(line % lpi))
1195 sol = RISC_SOL | RISC_IRQ1 | RISC_CNT_INC;
1196 else
1197 sol = RISC_SOL;
1198
1199 if (bpl <= sg_dma_len(sg) - offset) {
1200 /* fits into current chunk */
1201 *(rp++) = cpu_to_le32(RISC_WRITE | sol | RISC_EOL |
1202 bpl);
1203 *(rp++) = cpu_to_le32(sg_dma_address(sg) + offset);
1204 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1205 offset += bpl;
1206 } else {
1207 /* scanline needs to be split */
1208 todo = bpl;
1209 *(rp++) = cpu_to_le32(RISC_WRITE | sol |
1210 (sg_dma_len(sg) - offset));
1211 *(rp++) = cpu_to_le32(sg_dma_address(sg) + offset);
1212 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1213 todo -= (sg_dma_len(sg) - offset);
1214 offset = 0;
1215 sg++;
1216 while (todo > sg_dma_len(sg)) {
1217 *(rp++) = cpu_to_le32(RISC_WRITE |
1218 sg_dma_len(sg));
1219 *(rp++) = cpu_to_le32(sg_dma_address(sg));
1220 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1221 todo -= sg_dma_len(sg);
1222 sg++;
1223 }
1224 *(rp++) = cpu_to_le32(RISC_WRITE | RISC_EOL | todo);
1225 *(rp++) = cpu_to_le32(sg_dma_address(sg));
1226 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1227 offset += todo;
1228 }
1229 offset += padding;
1230 }
1231
1232 return rp;
1233}
1234
1235int cx25821_risc_databuffer_audio(struct pci_dev *pci,
1236 struct btcx_riscmem *risc,
1237 struct scatterlist *sglist,
1238 unsigned int bpl,
1239 unsigned int lines, unsigned int lpi)
1240{
1241 u32 instructions;
1242 __le32 *rp;
1243 int rc;
1244
1245 /* estimate risc mem: worst case is one write per page border +
1246 one write per scan line + syncs + jump (all 2 dwords). Here
1247 there is no padding and no sync. First DMA region may be smaller
1248 than PAGE_SIZE */
1249 /* Jump and write need an extra dword */
1250 instructions = 1 + (bpl * lines) / PAGE_SIZE + lines;
1251 instructions += 1;
1252
1253 rc = btcx_riscmem_alloc(pci, risc, instructions * 12);
1254 if (rc < 0)
1255 return rc;
1256
1257 /* write risc instructions */
1258 rp = risc->cpu;
1259 rp = cx25821_risc_field_audio(rp, sglist, 0, NO_SYNC_LINE, bpl, 0,
1260 lines, lpi);
1261
1262 /* save pointer to jmp instruction address */
1263 risc->jmp = rp;
1264 BUG_ON((risc->jmp - risc->cpu + 2) * sizeof(*risc->cpu) > risc->size);
1265 return 0;
1266}
1267EXPORT_SYMBOL(cx25821_risc_databuffer_audio);
1268
1269int cx25821_risc_stopper(struct pci_dev *pci, struct btcx_riscmem *risc,
1270 u32 reg, u32 mask, u32 value)
1271{
1272 __le32 *rp;
1273 int rc;
1274
1275 rc = btcx_riscmem_alloc(pci, risc, 4 * 16);
1276
1277 if (rc < 0)
1278 return rc;
1279
1280 /* write risc instructions */
1281 rp = risc->cpu;
1282
1283 *(rp++) = cpu_to_le32(RISC_WRITECR | RISC_IRQ1);
1284 *(rp++) = cpu_to_le32(reg);
1285 *(rp++) = cpu_to_le32(value);
1286 *(rp++) = cpu_to_le32(mask);
1287 *(rp++) = cpu_to_le32(RISC_JUMP);
1288 *(rp++) = cpu_to_le32(risc->dma);
1289 *(rp++) = cpu_to_le32(0); /* bits 63-32 */
1290 return 0;
1291}
1292
1293void cx25821_free_buffer(struct videobuf_queue *q, struct cx25821_buffer *buf)
1294{
1295 struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
1296
1297 BUG_ON(in_interrupt());
1298 videobuf_waiton(q, &buf->vb, 0, 0);
1299 videobuf_dma_unmap(q->dev, dma);
1300 videobuf_dma_free(dma);
1301 btcx_riscmem_free(to_pci_dev(q->dev), &buf->risc);
1302 buf->vb.state = VIDEOBUF_NEEDS_INIT;
1303}
1304
1305static irqreturn_t cx25821_irq(int irq, void *dev_id)
1306{
1307 struct cx25821_dev *dev = dev_id;
1308 u32 pci_status;
1309 u32 vid_status;
1310 int i, handled = 0;
1311 u32 mask[8] = { 1, 2, 4, 8, 16, 32, 64, 128 };
1312
1313 pci_status = cx_read(PCI_INT_STAT);
1314
1315 if (pci_status == 0)
1316 goto out;
1317
1318 for (i = 0; i < VID_CHANNEL_NUM; i++) {
1319 if (pci_status & mask[i]) {
1320 vid_status = cx_read(dev->channels[i].
1321 sram_channels->int_stat);
1322
1323 if (vid_status)
1324 handled += cx25821_video_irq(dev, i,
1325 vid_status);
1326
1327 cx_write(PCI_INT_STAT, mask[i]);
1328 }
1329 }
1330
1331out:
1332 return IRQ_RETVAL(handled);
1333}
1334
1335void cx25821_print_irqbits(char *name, char *tag, char **strings,
1336 int len, u32 bits, u32 mask)
1337{
1338 unsigned int i;
1339
1340 printk(KERN_DEBUG pr_fmt("%s: %s [0x%x]"), name, tag, bits);
1341
1342 for (i = 0; i < len; i++) {
1343 if (!(bits & (1 << i)))
1344 continue;
1345 if (strings[i])
1346 pr_cont(" %s", strings[i]);
1347 else
1348 pr_cont(" %d", i);
1349 if (!(mask & (1 << i)))
1350 continue;
1351 pr_cont("*");
1352 }
1353 pr_cont("\n");
1354}
1355EXPORT_SYMBOL(cx25821_print_irqbits);
1356
1357struct cx25821_dev *cx25821_dev_get(struct pci_dev *pci)
1358{
1359 struct cx25821_dev *dev = pci_get_drvdata(pci);
1360 return dev;
1361}
1362EXPORT_SYMBOL(cx25821_dev_get);
1363
1364static int __devinit cx25821_initdev(struct pci_dev *pci_dev,
1365 const struct pci_device_id *pci_id)
1366{
1367 struct cx25821_dev *dev;
1368 int err = 0;
1369
1370 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
1371 if (NULL == dev)
1372 return -ENOMEM;
1373
1374 err = v4l2_device_register(&pci_dev->dev, &dev->v4l2_dev);
1375 if (err < 0)
1376 goto fail_free;
1377
1378 /* pci init */
1379 dev->pci = pci_dev;
1380 if (pci_enable_device(pci_dev)) {
1381 err = -EIO;
1382
1383 pr_info("pci enable failed!\n");
1384
1385 goto fail_unregister_device;
1386 }
1387
1388 pr_info("Athena pci enable !\n");
1389
1390 err = cx25821_dev_setup(dev);
1391 if (err) {
1392 if (err == -EBUSY)
1393 goto fail_unregister_device;
1394 else
1395 goto fail_unregister_pci;
1396 }
1397
1398 /* print pci info */
1399 pci_read_config_byte(pci_dev, PCI_CLASS_REVISION, &dev->pci_rev);
1400 pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &dev->pci_lat);
1401 pr_info("%s/0: found at %s, rev: %d, irq: %d, latency: %d, mmio: 0x%llx\n",
1402 dev->name, pci_name(pci_dev), dev->pci_rev, pci_dev->irq,
1403 dev->pci_lat, (unsigned long long)dev->base_io_addr);
1404
1405 pci_set_master(pci_dev);
1406 if (!pci_dma_supported(pci_dev, 0xffffffff)) {
1407 pr_err("%s/0: Oops: no 32bit PCI DMA ???\n", dev->name);
1408 err = -EIO;
1409 goto fail_irq;
1410 }
1411
1412 err = request_irq(pci_dev->irq, cx25821_irq,
1413 IRQF_SHARED, dev->name, dev);
1414
1415 if (err < 0) {
1416 pr_err("%s: can't get IRQ %d\n", dev->name, pci_dev->irq);
1417 goto fail_irq;
1418 }
1419
1420 return 0;
1421
1422fail_irq:
1423 pr_info("cx25821_initdev() can't get IRQ !\n");
1424 cx25821_dev_unregister(dev);
1425
1426fail_unregister_pci:
1427 pci_disable_device(pci_dev);
1428fail_unregister_device:
1429 v4l2_device_unregister(&dev->v4l2_dev);
1430
1431fail_free:
1432 kfree(dev);
1433 return err;
1434}
1435
1436static void __devexit cx25821_finidev(struct pci_dev *pci_dev)
1437{
1438 struct v4l2_device *v4l2_dev = pci_get_drvdata(pci_dev);
1439 struct cx25821_dev *dev = get_cx25821(v4l2_dev);
1440
1441 cx25821_shutdown(dev);
1442 pci_disable_device(pci_dev);
1443
1444 /* unregister stuff */
1445 if (pci_dev->irq)
1446 free_irq(pci_dev->irq, dev);
1447
1448 mutex_lock(&cx25821_devlist_mutex);
1449 list_del(&dev->devlist);
1450 mutex_unlock(&cx25821_devlist_mutex);
1451
1452 cx25821_dev_unregister(dev);
1453 v4l2_device_unregister(v4l2_dev);
1454 kfree(dev);
1455}
1456
1457static DEFINE_PCI_DEVICE_TABLE(cx25821_pci_tbl) = {
1458 {
1459 /* CX25821 Athena */
1460 .vendor = 0x14f1,
1461 .device = 0x8210,
1462 .subvendor = 0x14f1,
1463 .subdevice = 0x0920,
1464 }, {
1465 /* CX25821 No Brand */
1466 .vendor = 0x14f1,
1467 .device = 0x8210,
1468 .subvendor = 0x0000,
1469 .subdevice = 0x0000,
1470 }, {
1471 /* --- end of list --- */
1472 }
1473};
1474
1475MODULE_DEVICE_TABLE(pci, cx25821_pci_tbl);
1476
1477static struct pci_driver cx25821_pci_driver = {
1478 .name = "cx25821",
1479 .id_table = cx25821_pci_tbl,
1480 .probe = cx25821_initdev,
1481 .remove = __devexit_p(cx25821_finidev),
1482 /* TODO */
1483 .suspend = NULL,
1484 .resume = NULL,
1485};
1486
1487static int __init cx25821_init(void)
1488{
1489 pr_info("driver version %d.%d.%d loaded\n",
1490 (CX25821_VERSION_CODE >> 16) & 0xff,
1491 (CX25821_VERSION_CODE >> 8) & 0xff,
1492 CX25821_VERSION_CODE & 0xff);
1493 return pci_register_driver(&cx25821_pci_driver);
1494}
1495
1496static void __exit cx25821_fini(void)
1497{
1498 pci_unregister_driver(&cx25821_pci_driver);
1499}
1500
1501module_init(cx25821_init);
1502module_exit(cx25821_fini);