1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2010 Texas Instruments Inc
4 */
5 #include <linux/module.h>
6 #include <linux/mod_devicetable.h>
7 #include <linux/kernel.h>
8 #include <linux/init.h>
9 #include <linux/ctype.h>
10 #include <linux/delay.h>
11 #include <linux/device.h>
12 #include <linux/interrupt.h>
13 #include <linux/platform_device.h>
14 #include <linux/videodev2.h>
15 #include <linux/slab.h>
16
17 #include <linux/platform_data/i2c-davinci.h>
18
19 #include <linux/io.h>
20
21 #include <media/davinci/vpbe_types.h>
22 #include <media/davinci/vpbe_venc.h>
23 #include <media/davinci/vpss.h>
24 #include <media/v4l2-device.h>
25
26 #include "vpbe_venc_regs.h"
27
28 #define MODULE_NAME "davinci-vpbe-venc"
29
30 static const struct platform_device_id vpbe_venc_devtype[] = {
31 {
32 .name = DM644X_VPBE_VENC_SUBDEV_NAME,
33 .driver_data = VPBE_VERSION_1,
34 }, {
35 .name = DM365_VPBE_VENC_SUBDEV_NAME,
36 .driver_data = VPBE_VERSION_2,
37 }, {
38 .name = DM355_VPBE_VENC_SUBDEV_NAME,
39 .driver_data = VPBE_VERSION_3,
40 },
41 {
42 /* sentinel */
43 }
44 };
45
46 MODULE_DEVICE_TABLE(platform, vpbe_venc_devtype);
47
48 static int debug = 2;
49 module_param(debug, int, 0644);
50 MODULE_PARM_DESC(debug, "Debug level 0-2");
51
52 struct venc_state {
53 struct v4l2_subdev sd;
54 struct venc_callback *callback;
55 struct venc_platform_data *pdata;
56 struct device *pdev;
57 u32 output;
58 v4l2_std_id std;
59 spinlock_t lock;
60 void __iomem *venc_base;
61 void __iomem *vdaccfg_reg;
62 enum vpbe_version venc_type;
63 };
64
to_state(struct v4l2_subdev * sd)65 static inline struct venc_state *to_state(struct v4l2_subdev *sd)
66 {
67 return container_of(sd, struct venc_state, sd);
68 }
69
venc_read(struct v4l2_subdev * sd,u32 offset)70 static inline u32 venc_read(struct v4l2_subdev *sd, u32 offset)
71 {
72 struct venc_state *venc = to_state(sd);
73
74 return readl(venc->venc_base + offset);
75 }
76
venc_write(struct v4l2_subdev * sd,u32 offset,u32 val)77 static inline u32 venc_write(struct v4l2_subdev *sd, u32 offset, u32 val)
78 {
79 struct venc_state *venc = to_state(sd);
80
81 writel(val, (venc->venc_base + offset));
82
83 return val;
84 }
85
venc_modify(struct v4l2_subdev * sd,u32 offset,u32 val,u32 mask)86 static inline u32 venc_modify(struct v4l2_subdev *sd, u32 offset,
87 u32 val, u32 mask)
88 {
89 u32 new_val = (venc_read(sd, offset) & ~mask) | (val & mask);
90
91 venc_write(sd, offset, new_val);
92
93 return new_val;
94 }
95
vdaccfg_write(struct v4l2_subdev * sd,u32 val)96 static inline u32 vdaccfg_write(struct v4l2_subdev *sd, u32 val)
97 {
98 struct venc_state *venc = to_state(sd);
99
100 writel(val, venc->vdaccfg_reg);
101
102 val = readl(venc->vdaccfg_reg);
103
104 return val;
105 }
106
107 #define VDAC_COMPONENT 0x543
108 #define VDAC_S_VIDEO 0x210
109 /* This function sets the dac of the VPBE for various outputs
110 */
venc_set_dac(struct v4l2_subdev * sd,u32 out_index)111 static int venc_set_dac(struct v4l2_subdev *sd, u32 out_index)
112 {
113 switch (out_index) {
114 case 0:
115 v4l2_dbg(debug, 1, sd, "Setting output to Composite\n");
116 venc_write(sd, VENC_DACSEL, 0);
117 break;
118 case 1:
119 v4l2_dbg(debug, 1, sd, "Setting output to Component\n");
120 venc_write(sd, VENC_DACSEL, VDAC_COMPONENT);
121 break;
122 case 2:
123 v4l2_dbg(debug, 1, sd, "Setting output to S-video\n");
124 venc_write(sd, VENC_DACSEL, VDAC_S_VIDEO);
125 break;
126 default:
127 return -EINVAL;
128 }
129
130 return 0;
131 }
132
venc_enabledigitaloutput(struct v4l2_subdev * sd,int benable)133 static void venc_enabledigitaloutput(struct v4l2_subdev *sd, int benable)
134 {
135 struct venc_state *venc = to_state(sd);
136
137 v4l2_dbg(debug, 2, sd, "venc_enabledigitaloutput\n");
138
139 if (benable) {
140 venc_write(sd, VENC_VMOD, 0);
141 venc_write(sd, VENC_CVBS, 0);
142 venc_write(sd, VENC_LCDOUT, 0);
143 venc_write(sd, VENC_HSPLS, 0);
144 venc_write(sd, VENC_HSTART, 0);
145 venc_write(sd, VENC_HVALID, 0);
146 venc_write(sd, VENC_HINT, 0);
147 venc_write(sd, VENC_VSPLS, 0);
148 venc_write(sd, VENC_VSTART, 0);
149 venc_write(sd, VENC_VVALID, 0);
150 venc_write(sd, VENC_VINT, 0);
151 venc_write(sd, VENC_YCCCTL, 0);
152 venc_write(sd, VENC_DACSEL, 0);
153
154 } else {
155 venc_write(sd, VENC_VMOD, 0);
156 /* disable VCLK output pin enable */
157 venc_write(sd, VENC_VIDCTL, 0x141);
158
159 /* Disable output sync pins */
160 venc_write(sd, VENC_SYNCCTL, 0);
161
162 /* Disable DCLOCK */
163 venc_write(sd, VENC_DCLKCTL, 0);
164 venc_write(sd, VENC_DRGBX1, 0x0000057C);
165
166 /* Disable LCD output control (accepting default polarity) */
167 venc_write(sd, VENC_LCDOUT, 0);
168 if (venc->venc_type != VPBE_VERSION_3)
169 venc_write(sd, VENC_CMPNT, 0x100);
170 venc_write(sd, VENC_HSPLS, 0);
171 venc_write(sd, VENC_HINT, 0);
172 venc_write(sd, VENC_HSTART, 0);
173 venc_write(sd, VENC_HVALID, 0);
174
175 venc_write(sd, VENC_VSPLS, 0);
176 venc_write(sd, VENC_VINT, 0);
177 venc_write(sd, VENC_VSTART, 0);
178 venc_write(sd, VENC_VVALID, 0);
179
180 venc_write(sd, VENC_HSDLY, 0);
181 venc_write(sd, VENC_VSDLY, 0);
182
183 venc_write(sd, VENC_YCCCTL, 0);
184 venc_write(sd, VENC_VSTARTA, 0);
185
186 /* Set OSD clock and OSD Sync Adavance registers */
187 venc_write(sd, VENC_OSDCLK0, 1);
188 venc_write(sd, VENC_OSDCLK1, 2);
189 }
190 }
191
192 static void
venc_enable_vpss_clock(int venc_type,enum vpbe_enc_timings_type type,unsigned int pclock)193 venc_enable_vpss_clock(int venc_type,
194 enum vpbe_enc_timings_type type,
195 unsigned int pclock)
196 {
197 if (venc_type == VPBE_VERSION_1)
198 return;
199
200 if (venc_type == VPBE_VERSION_2 && (type == VPBE_ENC_STD || (type ==
201 VPBE_ENC_DV_TIMINGS && pclock <= 27000000))) {
202 vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
203 vpss_enable_clock(VPSS_VPBE_CLOCK, 1);
204 return;
205 }
206
207 if (venc_type == VPBE_VERSION_3 && type == VPBE_ENC_STD)
208 vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 0);
209 }
210
211 #define VDAC_CONFIG_SD_V3 0x0E21A6B6
212 #define VDAC_CONFIG_SD_V2 0x081141CF
213 /*
214 * setting NTSC mode
215 */
venc_set_ntsc(struct v4l2_subdev * sd)216 static int venc_set_ntsc(struct v4l2_subdev *sd)
217 {
218 struct venc_state *venc = to_state(sd);
219 struct venc_platform_data *pdata = venc->pdata;
220
221 v4l2_dbg(debug, 2, sd, "venc_set_ntsc\n");
222
223 /* Setup clock at VPSS & VENC for SD */
224 vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
225 if (pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_525_60) < 0)
226 return -EINVAL;
227
228 venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_525_60);
229 venc_enabledigitaloutput(sd, 0);
230
231 if (venc->venc_type == VPBE_VERSION_3) {
232 venc_write(sd, VENC_CLKCTL, 0x01);
233 venc_write(sd, VENC_VIDCTL, 0);
234 vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
235 } else if (venc->venc_type == VPBE_VERSION_2) {
236 venc_write(sd, VENC_CLKCTL, 0x01);
237 venc_write(sd, VENC_VIDCTL, 0);
238 vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
239 } else {
240 /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
241 venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
242 /* Set REC656 Mode */
243 venc_write(sd, VENC_YCCCTL, 0x1);
244 venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAFRQ);
245 venc_modify(sd, VENC_VDPRO, 0, VENC_VDPRO_DAUPS);
246 }
247
248 venc_write(sd, VENC_VMOD, 0);
249 venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
250 VENC_VMOD_VIE);
251 venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
252 venc_modify(sd, VENC_VMOD, (0 << VENC_VMOD_TVTYP_SHIFT),
253 VENC_VMOD_TVTYP);
254 venc_write(sd, VENC_DACTST, 0x0);
255 venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
256
257 return 0;
258 }
259
260 /*
261 * setting PAL mode
262 */
venc_set_pal(struct v4l2_subdev * sd)263 static int venc_set_pal(struct v4l2_subdev *sd)
264 {
265 struct venc_state *venc = to_state(sd);
266
267 v4l2_dbg(debug, 2, sd, "venc_set_pal\n");
268
269 /* Setup clock at VPSS & VENC for SD */
270 vpss_enable_clock(VPSS_VENC_CLOCK_SEL, 1);
271 if (venc->pdata->setup_clock(VPBE_ENC_STD, V4L2_STD_625_50) < 0)
272 return -EINVAL;
273
274 venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_STD, V4L2_STD_625_50);
275 venc_enabledigitaloutput(sd, 0);
276
277 if (venc->venc_type == VPBE_VERSION_3) {
278 venc_write(sd, VENC_CLKCTL, 0x1);
279 venc_write(sd, VENC_VIDCTL, 0);
280 vdaccfg_write(sd, VDAC_CONFIG_SD_V3);
281 } else if (venc->venc_type == VPBE_VERSION_2) {
282 venc_write(sd, VENC_CLKCTL, 0x1);
283 venc_write(sd, VENC_VIDCTL, 0);
284 vdaccfg_write(sd, VDAC_CONFIG_SD_V2);
285 } else {
286 /* to set VENC CLK DIV to 1 - final clock is 54 MHz */
287 venc_modify(sd, VENC_VIDCTL, 0, 1 << 1);
288 /* Set REC656 Mode */
289 venc_write(sd, VENC_YCCCTL, 0x1);
290 }
291
292 venc_modify(sd, VENC_SYNCCTL, 1 << VENC_SYNCCTL_OVD_SHIFT,
293 VENC_SYNCCTL_OVD);
294 venc_write(sd, VENC_VMOD, 0);
295 venc_modify(sd, VENC_VMOD,
296 (1 << VENC_VMOD_VIE_SHIFT),
297 VENC_VMOD_VIE);
298 venc_modify(sd, VENC_VMOD,
299 (0 << VENC_VMOD_VMD), VENC_VMOD_VMD);
300 venc_modify(sd, VENC_VMOD,
301 (1 << VENC_VMOD_TVTYP_SHIFT),
302 VENC_VMOD_TVTYP);
303 venc_write(sd, VENC_DACTST, 0x0);
304 venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
305
306 return 0;
307 }
308
309 #define VDAC_CONFIG_HD_V2 0x081141EF
310 /*
311 * venc_set_480p59_94
312 *
313 * This function configures the video encoder to EDTV(525p) component setting.
314 */
venc_set_480p59_94(struct v4l2_subdev * sd)315 static int venc_set_480p59_94(struct v4l2_subdev *sd)
316 {
317 struct venc_state *venc = to_state(sd);
318 struct venc_platform_data *pdata = venc->pdata;
319
320 v4l2_dbg(debug, 2, sd, "venc_set_480p59_94\n");
321 if (venc->venc_type != VPBE_VERSION_1 &&
322 venc->venc_type != VPBE_VERSION_2)
323 return -EINVAL;
324
325 /* Setup clock at VPSS & VENC for SD */
326 if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
327 return -EINVAL;
328
329 venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
330 venc_enabledigitaloutput(sd, 0);
331
332 if (venc->venc_type == VPBE_VERSION_2)
333 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
334 venc_write(sd, VENC_OSDCLK0, 0);
335 venc_write(sd, VENC_OSDCLK1, 1);
336
337 if (venc->venc_type == VPBE_VERSION_1) {
338 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
339 VENC_VDPRO_DAFRQ);
340 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
341 VENC_VDPRO_DAUPS);
342 }
343
344 venc_write(sd, VENC_VMOD, 0);
345 venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
346 VENC_VMOD_VIE);
347 venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
348 venc_modify(sd, VENC_VMOD, (HDTV_525P << VENC_VMOD_TVTYP_SHIFT),
349 VENC_VMOD_TVTYP);
350 venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
351 VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
352
353 venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
354
355 return 0;
356 }
357
358 /*
359 * venc_set_625p
360 *
361 * This function configures the video encoder to HDTV(625p) component setting
362 */
venc_set_576p50(struct v4l2_subdev * sd)363 static int venc_set_576p50(struct v4l2_subdev *sd)
364 {
365 struct venc_state *venc = to_state(sd);
366 struct venc_platform_data *pdata = venc->pdata;
367
368 v4l2_dbg(debug, 2, sd, "venc_set_576p50\n");
369
370 if (venc->venc_type != VPBE_VERSION_1 &&
371 venc->venc_type != VPBE_VERSION_2)
372 return -EINVAL;
373 /* Setup clock at VPSS & VENC for SD */
374 if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 27000000) < 0)
375 return -EINVAL;
376
377 venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 27000000);
378 venc_enabledigitaloutput(sd, 0);
379
380 if (venc->venc_type == VPBE_VERSION_2)
381 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
382
383 venc_write(sd, VENC_OSDCLK0, 0);
384 venc_write(sd, VENC_OSDCLK1, 1);
385
386 if (venc->venc_type == VPBE_VERSION_1) {
387 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAFRQ,
388 VENC_VDPRO_DAFRQ);
389 venc_modify(sd, VENC_VDPRO, VENC_VDPRO_DAUPS,
390 VENC_VDPRO_DAUPS);
391 }
392
393 venc_write(sd, VENC_VMOD, 0);
394 venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
395 VENC_VMOD_VIE);
396 venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
397 venc_modify(sd, VENC_VMOD, (HDTV_625P << VENC_VMOD_TVTYP_SHIFT),
398 VENC_VMOD_TVTYP);
399
400 venc_modify(sd, VENC_VMOD, VENC_VMOD_VDMD_YCBCR8 <<
401 VENC_VMOD_VDMD_SHIFT, VENC_VMOD_VDMD);
402 venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
403
404 return 0;
405 }
406
407 /*
408 * venc_set_720p60_internal - Setup 720p60 in venc for dm365 only
409 */
venc_set_720p60_internal(struct v4l2_subdev * sd)410 static int venc_set_720p60_internal(struct v4l2_subdev *sd)
411 {
412 struct venc_state *venc = to_state(sd);
413 struct venc_platform_data *pdata = venc->pdata;
414
415 if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
416 return -EINVAL;
417
418 venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
419 venc_enabledigitaloutput(sd, 0);
420
421 venc_write(sd, VENC_OSDCLK0, 0);
422 venc_write(sd, VENC_OSDCLK1, 1);
423
424 venc_write(sd, VENC_VMOD, 0);
425 /* DM365 component HD mode */
426 venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
427 VENC_VMOD_VIE);
428 venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
429 venc_modify(sd, VENC_VMOD, (HDTV_720P << VENC_VMOD_TVTYP_SHIFT),
430 VENC_VMOD_TVTYP);
431 venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
432 venc_write(sd, VENC_XHINTVL, 0);
433 return 0;
434 }
435
436 /*
437 * venc_set_1080i30_internal - Setup 1080i30 in venc for dm365 only
438 */
venc_set_1080i30_internal(struct v4l2_subdev * sd)439 static int venc_set_1080i30_internal(struct v4l2_subdev *sd)
440 {
441 struct venc_state *venc = to_state(sd);
442 struct venc_platform_data *pdata = venc->pdata;
443
444 if (pdata->setup_clock(VPBE_ENC_DV_TIMINGS, 74250000) < 0)
445 return -EINVAL;
446
447 venc_enable_vpss_clock(venc->venc_type, VPBE_ENC_DV_TIMINGS, 74250000);
448 venc_enabledigitaloutput(sd, 0);
449
450 venc_write(sd, VENC_OSDCLK0, 0);
451 venc_write(sd, VENC_OSDCLK1, 1);
452
453
454 venc_write(sd, VENC_VMOD, 0);
455 /* DM365 component HD mode */
456 venc_modify(sd, VENC_VMOD, (1 << VENC_VMOD_VIE_SHIFT),
457 VENC_VMOD_VIE);
458 venc_modify(sd, VENC_VMOD, VENC_VMOD_HDMD, VENC_VMOD_HDMD);
459 venc_modify(sd, VENC_VMOD, (HDTV_1080I << VENC_VMOD_TVTYP_SHIFT),
460 VENC_VMOD_TVTYP);
461 venc_modify(sd, VENC_VMOD, VENC_VMOD_VENC, VENC_VMOD_VENC);
462 venc_write(sd, VENC_XHINTVL, 0);
463 return 0;
464 }
465
venc_s_std_output(struct v4l2_subdev * sd,v4l2_std_id norm)466 static int venc_s_std_output(struct v4l2_subdev *sd, v4l2_std_id norm)
467 {
468 v4l2_dbg(debug, 1, sd, "venc_s_std_output\n");
469
470 if (norm & V4L2_STD_525_60)
471 return venc_set_ntsc(sd);
472 else if (norm & V4L2_STD_625_50)
473 return venc_set_pal(sd);
474
475 return -EINVAL;
476 }
477
venc_s_dv_timings(struct v4l2_subdev * sd,struct v4l2_dv_timings * dv_timings)478 static int venc_s_dv_timings(struct v4l2_subdev *sd,
479 struct v4l2_dv_timings *dv_timings)
480 {
481 struct venc_state *venc = to_state(sd);
482 u32 height = dv_timings->bt.height;
483 int ret;
484
485 v4l2_dbg(debug, 1, sd, "venc_s_dv_timings\n");
486
487 if (height == 576)
488 return venc_set_576p50(sd);
489 else if (height == 480)
490 return venc_set_480p59_94(sd);
491 else if ((height == 720) &&
492 (venc->venc_type == VPBE_VERSION_2)) {
493 /* TBD setup internal 720p mode here */
494 ret = venc_set_720p60_internal(sd);
495 /* for DM365 VPBE, there is DAC inside */
496 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
497 return ret;
498 } else if ((height == 1080) &&
499 (venc->venc_type == VPBE_VERSION_2)) {
500 /* TBD setup internal 1080i mode here */
501 ret = venc_set_1080i30_internal(sd);
502 /* for DM365 VPBE, there is DAC inside */
503 vdaccfg_write(sd, VDAC_CONFIG_HD_V2);
504 return ret;
505 }
506 return -EINVAL;
507 }
508
venc_s_routing(struct v4l2_subdev * sd,u32 input,u32 output,u32 config)509 static int venc_s_routing(struct v4l2_subdev *sd, u32 input, u32 output,
510 u32 config)
511 {
512 struct venc_state *venc = to_state(sd);
513 int ret;
514
515 v4l2_dbg(debug, 1, sd, "venc_s_routing\n");
516
517 ret = venc_set_dac(sd, output);
518 if (!ret)
519 venc->output = output;
520
521 return ret;
522 }
523
venc_ioctl(struct v4l2_subdev * sd,unsigned int cmd,void * arg)524 static long venc_ioctl(struct v4l2_subdev *sd,
525 unsigned int cmd,
526 void *arg)
527 {
528 u32 val;
529
530 switch (cmd) {
531 case VENC_GET_FLD:
532 val = venc_read(sd, VENC_VSTAT);
533 *((int *)arg) = ((val & VENC_VSTAT_FIDST) ==
534 VENC_VSTAT_FIDST);
535 break;
536 default:
537 v4l2_err(sd, "Wrong IOCTL cmd\n");
538 break;
539 }
540
541 return 0;
542 }
543
544 static const struct v4l2_subdev_core_ops venc_core_ops = {
545 .ioctl = venc_ioctl,
546 };
547
548 static const struct v4l2_subdev_video_ops venc_video_ops = {
549 .s_routing = venc_s_routing,
550 .s_std_output = venc_s_std_output,
551 .s_dv_timings = venc_s_dv_timings,
552 };
553
554 static const struct v4l2_subdev_ops venc_ops = {
555 .core = &venc_core_ops,
556 .video = &venc_video_ops,
557 };
558
venc_initialize(struct v4l2_subdev * sd)559 static int venc_initialize(struct v4l2_subdev *sd)
560 {
561 struct venc_state *venc = to_state(sd);
562 int ret;
563
564 /* Set default to output to composite and std to NTSC */
565 venc->output = 0;
566 venc->std = V4L2_STD_525_60;
567
568 ret = venc_s_routing(sd, 0, venc->output, 0);
569 if (ret < 0) {
570 v4l2_err(sd, "Error setting output during init\n");
571 return -EINVAL;
572 }
573
574 ret = venc_s_std_output(sd, venc->std);
575 if (ret < 0) {
576 v4l2_err(sd, "Error setting std during init\n");
577 return -EINVAL;
578 }
579
580 return ret;
581 }
582
venc_device_get(struct device * dev,void * data)583 static int venc_device_get(struct device *dev, void *data)
584 {
585 struct platform_device *pdev = to_platform_device(dev);
586 struct venc_state **venc = data;
587
588 if (strstr(pdev->name, "vpbe-venc") != NULL)
589 *venc = platform_get_drvdata(pdev);
590
591 return 0;
592 }
593
venc_sub_dev_init(struct v4l2_device * v4l2_dev,const char * venc_name)594 struct v4l2_subdev *venc_sub_dev_init(struct v4l2_device *v4l2_dev,
595 const char *venc_name)
596 {
597 struct venc_state *venc = NULL;
598
599 bus_for_each_dev(&platform_bus_type, NULL, &venc,
600 venc_device_get);
601 if (venc == NULL)
602 return NULL;
603
604 v4l2_subdev_init(&venc->sd, &venc_ops);
605
606 strscpy(venc->sd.name, venc_name, sizeof(venc->sd.name));
607 if (v4l2_device_register_subdev(v4l2_dev, &venc->sd) < 0) {
608 v4l2_err(v4l2_dev,
609 "vpbe unable to register venc sub device\n");
610 return NULL;
611 }
612 if (venc_initialize(&venc->sd)) {
613 v4l2_err(v4l2_dev,
614 "vpbe venc initialization failed\n");
615 return NULL;
616 }
617
618 return &venc->sd;
619 }
620 EXPORT_SYMBOL(venc_sub_dev_init);
621
venc_probe(struct platform_device * pdev)622 static int venc_probe(struct platform_device *pdev)
623 {
624 const struct platform_device_id *pdev_id;
625 struct venc_state *venc;
626 struct resource *res;
627
628 if (!pdev->dev.platform_data) {
629 dev_err(&pdev->dev, "No platform data for VENC sub device");
630 return -EINVAL;
631 }
632
633 pdev_id = platform_get_device_id(pdev);
634 if (!pdev_id)
635 return -EINVAL;
636
637 venc = devm_kzalloc(&pdev->dev, sizeof(struct venc_state), GFP_KERNEL);
638 if (venc == NULL)
639 return -ENOMEM;
640
641 venc->venc_type = pdev_id->driver_data;
642 venc->pdev = &pdev->dev;
643 venc->pdata = pdev->dev.platform_data;
644
645 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
646
647 venc->venc_base = devm_ioremap_resource(&pdev->dev, res);
648 if (IS_ERR(venc->venc_base))
649 return PTR_ERR(venc->venc_base);
650
651 if (venc->venc_type != VPBE_VERSION_1) {
652 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
653
654 venc->vdaccfg_reg = devm_ioremap_resource(&pdev->dev, res);
655 if (IS_ERR(venc->vdaccfg_reg))
656 return PTR_ERR(venc->vdaccfg_reg);
657 }
658 spin_lock_init(&venc->lock);
659 platform_set_drvdata(pdev, venc);
660 dev_notice(venc->pdev, "VENC sub device probe success\n");
661
662 return 0;
663 }
664
venc_remove(struct platform_device * pdev)665 static int venc_remove(struct platform_device *pdev)
666 {
667 return 0;
668 }
669
670 static struct platform_driver venc_driver = {
671 .probe = venc_probe,
672 .remove = venc_remove,
673 .driver = {
674 .name = MODULE_NAME,
675 },
676 .id_table = vpbe_venc_devtype
677 };
678
679 module_platform_driver(venc_driver);
680
681 MODULE_LICENSE("GPL");
682 MODULE_DESCRIPTION("VPBE VENC Driver");
683 MODULE_AUTHOR("Texas Instruments");
684
