1 /*
2 * Copyright (C) 2010 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation version 2.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 */
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19 #include <linux/module.h>
20 #include <linux/errno.h>
21 #include <linux/fs.h>
22 #include <linux/string.h>
23 #include <linux/wait.h>
24 #include <linux/time.h>
25 #include <linux/platform_device.h>
26 #include <linux/io.h>
27 #include <linux/slab.h>
28 #include <linux/clk.h>
29 #include <linux/err.h>
30
31 #include <media/v4l2-device.h>
32 #include <media/davinci/vpbe_types.h>
33 #include <media/davinci/vpbe.h>
34 #include <media/davinci/vpss.h>
35 #include <media/davinci/vpbe_venc.h>
36
37 #define VPBE_DEFAULT_OUTPUT "Composite"
38 #define VPBE_DEFAULT_MODE "ntsc"
39
40 static char *def_output = VPBE_DEFAULT_OUTPUT;
41 static char *def_mode = VPBE_DEFAULT_MODE;
42 static int debug;
43
44 module_param(def_output, charp, S_IRUGO);
45 module_param(def_mode, charp, S_IRUGO);
46 module_param(debug, int, 0644);
47
48 MODULE_PARM_DESC(def_output, "vpbe output name (default:Composite)");
49 MODULE_PARM_DESC(def_mode, "vpbe output mode name (default:ntsc");
50 MODULE_PARM_DESC(debug, "Debug level 0-1");
51
52 MODULE_DESCRIPTION("TI DMXXX VPBE Display controller");
53 MODULE_LICENSE("GPL");
54 MODULE_AUTHOR("Texas Instruments");
55
56 /**
57 * vpbe_current_encoder_info - Get config info for current encoder
58 * @vpbe_dev - vpbe device ptr
59 *
60 * Return ptr to current encoder config info
61 */
62 static struct encoder_config_info*
vpbe_current_encoder_info(struct vpbe_device * vpbe_dev)63 vpbe_current_encoder_info(struct vpbe_device *vpbe_dev)
64 {
65 struct vpbe_config *cfg = vpbe_dev->cfg;
66 int index = vpbe_dev->current_sd_index;
67
68 return ((index == 0) ? &cfg->venc :
69 &cfg->ext_encoders[index-1]);
70 }
71
72 /**
73 * vpbe_find_encoder_sd_index - Given a name find encoder sd index
74 *
75 * @vpbe_config - ptr to vpbe cfg
76 * @output_index - index used by application
77 *
78 * Return sd index of the encoder
79 */
vpbe_find_encoder_sd_index(struct vpbe_config * cfg,int index)80 static int vpbe_find_encoder_sd_index(struct vpbe_config *cfg,
81 int index)
82 {
83 char *encoder_name = cfg->outputs[index].subdev_name;
84 int i;
85
86 /* Venc is always first */
87 if (!strcmp(encoder_name, cfg->venc.module_name))
88 return 0;
89
90 for (i = 0; i < cfg->num_ext_encoders; i++) {
91 if (!strcmp(encoder_name,
92 cfg->ext_encoders[i].module_name))
93 return i+1;
94 }
95
96 return -EINVAL;
97 }
98
99 /**
100 * vpbe_g_cropcap - Get crop capabilities of the display
101 * @vpbe_dev - vpbe device ptr
102 * @cropcap - cropcap is a ptr to struct v4l2_cropcap
103 *
104 * Update the crop capabilities in crop cap for current
105 * mode
106 */
vpbe_g_cropcap(struct vpbe_device * vpbe_dev,struct v4l2_cropcap * cropcap)107 static int vpbe_g_cropcap(struct vpbe_device *vpbe_dev,
108 struct v4l2_cropcap *cropcap)
109 {
110 if (NULL == cropcap)
111 return -EINVAL;
112 cropcap->bounds.left = 0;
113 cropcap->bounds.top = 0;
114 cropcap->bounds.width = vpbe_dev->current_timings.xres;
115 cropcap->bounds.height = vpbe_dev->current_timings.yres;
116 cropcap->defrect = cropcap->bounds;
117
118 return 0;
119 }
120
121 /**
122 * vpbe_enum_outputs - enumerate outputs
123 * @vpbe_dev - vpbe device ptr
124 * @output - ptr to v4l2_output structure
125 *
126 * Enumerates the outputs available at the vpbe display
127 * returns the status, -EINVAL if end of output list
128 */
vpbe_enum_outputs(struct vpbe_device * vpbe_dev,struct v4l2_output * output)129 static int vpbe_enum_outputs(struct vpbe_device *vpbe_dev,
130 struct v4l2_output *output)
131 {
132 struct vpbe_config *cfg = vpbe_dev->cfg;
133 int temp_index = output->index;
134
135 if (temp_index >= cfg->num_outputs)
136 return -EINVAL;
137
138 *output = cfg->outputs[temp_index].output;
139 output->index = temp_index;
140
141 return 0;
142 }
143
vpbe_get_mode_info(struct vpbe_device * vpbe_dev,char * mode,int output_index)144 static int vpbe_get_mode_info(struct vpbe_device *vpbe_dev, char *mode,
145 int output_index)
146 {
147 struct vpbe_config *cfg = vpbe_dev->cfg;
148 struct vpbe_enc_mode_info var;
149 int curr_output = output_index;
150 int i;
151
152 if (NULL == mode)
153 return -EINVAL;
154
155 for (i = 0; i < cfg->outputs[curr_output].num_modes; i++) {
156 var = cfg->outputs[curr_output].modes[i];
157 if (!strcmp(mode, var.name)) {
158 vpbe_dev->current_timings = var;
159 return 0;
160 }
161 }
162
163 return -EINVAL;
164 }
165
vpbe_get_current_mode_info(struct vpbe_device * vpbe_dev,struct vpbe_enc_mode_info * mode_info)166 static int vpbe_get_current_mode_info(struct vpbe_device *vpbe_dev,
167 struct vpbe_enc_mode_info *mode_info)
168 {
169 if (NULL == mode_info)
170 return -EINVAL;
171
172 *mode_info = vpbe_dev->current_timings;
173
174 return 0;
175 }
176
177 /* Get std by std id */
vpbe_get_std_info(struct vpbe_device * vpbe_dev,v4l2_std_id std_id)178 static int vpbe_get_std_info(struct vpbe_device *vpbe_dev,
179 v4l2_std_id std_id)
180 {
181 struct vpbe_config *cfg = vpbe_dev->cfg;
182 struct vpbe_enc_mode_info var;
183 int curr_output = vpbe_dev->current_out_index;
184 int i;
185
186 for (i = 0; i < vpbe_dev->cfg->outputs[curr_output].num_modes; i++) {
187 var = cfg->outputs[curr_output].modes[i];
188 if ((var.timings_type & VPBE_ENC_STD) &&
189 (var.std_id & std_id)) {
190 vpbe_dev->current_timings = var;
191 return 0;
192 }
193 }
194
195 return -EINVAL;
196 }
197
vpbe_get_std_info_by_name(struct vpbe_device * vpbe_dev,char * std_name)198 static int vpbe_get_std_info_by_name(struct vpbe_device *vpbe_dev,
199 char *std_name)
200 {
201 struct vpbe_config *cfg = vpbe_dev->cfg;
202 struct vpbe_enc_mode_info var;
203 int curr_output = vpbe_dev->current_out_index;
204 int i;
205
206 for (i = 0; i < vpbe_dev->cfg->outputs[curr_output].num_modes; i++) {
207 var = cfg->outputs[curr_output].modes[i];
208 if (!strcmp(var.name, std_name)) {
209 vpbe_dev->current_timings = var;
210 return 0;
211 }
212 }
213
214 return -EINVAL;
215 }
216
217 /**
218 * vpbe_set_output - Set output
219 * @vpbe_dev - vpbe device ptr
220 * @index - index of output
221 *
222 * Set vpbe output to the output specified by the index
223 */
vpbe_set_output(struct vpbe_device * vpbe_dev,int index)224 static int vpbe_set_output(struct vpbe_device *vpbe_dev, int index)
225 {
226 struct encoder_config_info *curr_enc_info =
227 vpbe_current_encoder_info(vpbe_dev);
228 struct vpbe_config *cfg = vpbe_dev->cfg;
229 struct venc_platform_data *venc_device = vpbe_dev->venc_device;
230 u32 if_params;
231 int enc_out_index;
232 int sd_index;
233 int ret = 0;
234
235 if (index >= cfg->num_outputs)
236 return -EINVAL;
237
238 mutex_lock(&vpbe_dev->lock);
239
240 sd_index = vpbe_dev->current_sd_index;
241 enc_out_index = cfg->outputs[index].output.index;
242 /*
243 * Currently we switch the encoder based on output selected
244 * by the application. If media controller is implemented later
245 * there is will be an API added to setup_link between venc
246 * and external encoder. So in that case below comparison always
247 * match and encoder will not be switched. But if application
248 * chose not to use media controller, then this provides current
249 * way of switching encoder at the venc output.
250 */
251 if (strcmp(curr_enc_info->module_name,
252 cfg->outputs[index].subdev_name)) {
253 /* Need to switch the encoder at the output */
254 sd_index = vpbe_find_encoder_sd_index(cfg, index);
255 if (sd_index < 0) {
256 ret = -EINVAL;
257 goto out;
258 }
259
260 if_params = cfg->outputs[index].if_params;
261 venc_device->setup_if_config(if_params);
262 if (ret)
263 goto out;
264 }
265
266 /* Set output at the encoder */
267 ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
268 s_routing, 0, enc_out_index, 0);
269 if (ret)
270 goto out;
271
272 /*
273 * It is assumed that venc or extenal encoder will set a default
274 * mode in the sub device. For external encoder or LCD pannel output,
275 * we also need to set up the lcd port for the required mode. So setup
276 * the lcd port for the default mode that is configured in the board
277 * arch/arm/mach-davinci/board-dm355-evm.setup file for the external
278 * encoder.
279 */
280 ret = vpbe_get_mode_info(vpbe_dev,
281 cfg->outputs[index].default_mode, index);
282 if (!ret) {
283 struct osd_state *osd_device = vpbe_dev->osd_device;
284
285 osd_device->ops.set_left_margin(osd_device,
286 vpbe_dev->current_timings.left_margin);
287 osd_device->ops.set_top_margin(osd_device,
288 vpbe_dev->current_timings.upper_margin);
289 vpbe_dev->current_sd_index = sd_index;
290 vpbe_dev->current_out_index = index;
291 }
292 out:
293 mutex_unlock(&vpbe_dev->lock);
294 return ret;
295 }
296
vpbe_set_default_output(struct vpbe_device * vpbe_dev)297 static int vpbe_set_default_output(struct vpbe_device *vpbe_dev)
298 {
299 struct vpbe_config *cfg = vpbe_dev->cfg;
300 int ret = 0;
301 int i;
302
303 for (i = 0; i < cfg->num_outputs; i++) {
304 if (!strcmp(def_output,
305 cfg->outputs[i].output.name)) {
306 ret = vpbe_set_output(vpbe_dev, i);
307 if (!ret)
308 vpbe_dev->current_out_index = i;
309 return ret;
310 }
311 }
312 return ret;
313 }
314
315 /**
316 * vpbe_get_output - Get output
317 * @vpbe_dev - vpbe device ptr
318 *
319 * return current vpbe output to the the index
320 */
vpbe_get_output(struct vpbe_device * vpbe_dev)321 static unsigned int vpbe_get_output(struct vpbe_device *vpbe_dev)
322 {
323 return vpbe_dev->current_out_index;
324 }
325
326 /**
327 * vpbe_s_dv_timings - Set the given preset timings in the encoder
328 *
329 * Sets the timings if supported by the current encoder. Return the status.
330 * 0 - success & -EINVAL on error
331 */
vpbe_s_dv_timings(struct vpbe_device * vpbe_dev,struct v4l2_dv_timings * dv_timings)332 static int vpbe_s_dv_timings(struct vpbe_device *vpbe_dev,
333 struct v4l2_dv_timings *dv_timings)
334 {
335 struct vpbe_config *cfg = vpbe_dev->cfg;
336 int out_index = vpbe_dev->current_out_index;
337 struct vpbe_output *output = &cfg->outputs[out_index];
338 int sd_index = vpbe_dev->current_sd_index;
339 int ret, i;
340
341
342 if (!(cfg->outputs[out_index].output.capabilities &
343 V4L2_OUT_CAP_DV_TIMINGS))
344 return -ENODATA;
345
346 for (i = 0; i < output->num_modes; i++) {
347 if (output->modes[i].timings_type == VPBE_ENC_DV_TIMINGS &&
348 !memcmp(&output->modes[i].dv_timings,
349 dv_timings, sizeof(*dv_timings)))
350 break;
351 }
352 if (i >= output->num_modes)
353 return -EINVAL;
354 vpbe_dev->current_timings = output->modes[i];
355 mutex_lock(&vpbe_dev->lock);
356
357 ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
358 s_dv_timings, dv_timings);
359 if (!ret && (vpbe_dev->amp != NULL)) {
360 /* Call amplifier subdevice */
361 ret = v4l2_subdev_call(vpbe_dev->amp, video,
362 s_dv_timings, dv_timings);
363 }
364 /* set the lcd controller output for the given mode */
365 if (!ret) {
366 struct osd_state *osd_device = vpbe_dev->osd_device;
367
368 osd_device->ops.set_left_margin(osd_device,
369 vpbe_dev->current_timings.left_margin);
370 osd_device->ops.set_top_margin(osd_device,
371 vpbe_dev->current_timings.upper_margin);
372 }
373 mutex_unlock(&vpbe_dev->lock);
374
375 return ret;
376 }
377
378 /**
379 * vpbe_g_dv_timings - Get the timings in the current encoder
380 *
381 * Get the timings in the current encoder. Return the status. 0 - success
382 * -EINVAL on error
383 */
vpbe_g_dv_timings(struct vpbe_device * vpbe_dev,struct v4l2_dv_timings * dv_timings)384 static int vpbe_g_dv_timings(struct vpbe_device *vpbe_dev,
385 struct v4l2_dv_timings *dv_timings)
386 {
387 struct vpbe_config *cfg = vpbe_dev->cfg;
388 int out_index = vpbe_dev->current_out_index;
389
390 if (!(cfg->outputs[out_index].output.capabilities &
391 V4L2_OUT_CAP_DV_TIMINGS))
392 return -ENODATA;
393
394 if (vpbe_dev->current_timings.timings_type &
395 VPBE_ENC_DV_TIMINGS) {
396 *dv_timings = vpbe_dev->current_timings.dv_timings;
397 return 0;
398 }
399
400 return -EINVAL;
401 }
402
403 /**
404 * vpbe_enum_dv_timings - Enumerate the dv timings in the current encoder
405 *
406 * Get the timings in the current encoder. Return the status. 0 - success
407 * -EINVAL on error
408 */
vpbe_enum_dv_timings(struct vpbe_device * vpbe_dev,struct v4l2_enum_dv_timings * timings)409 static int vpbe_enum_dv_timings(struct vpbe_device *vpbe_dev,
410 struct v4l2_enum_dv_timings *timings)
411 {
412 struct vpbe_config *cfg = vpbe_dev->cfg;
413 int out_index = vpbe_dev->current_out_index;
414 struct vpbe_output *output = &cfg->outputs[out_index];
415 int j = 0;
416 int i;
417
418 if (!(output->output.capabilities & V4L2_OUT_CAP_DV_TIMINGS))
419 return -ENODATA;
420
421 for (i = 0; i < output->num_modes; i++) {
422 if (output->modes[i].timings_type == VPBE_ENC_DV_TIMINGS) {
423 if (j == timings->index)
424 break;
425 j++;
426 }
427 }
428
429 if (i == output->num_modes)
430 return -EINVAL;
431 timings->timings = output->modes[i].dv_timings;
432 return 0;
433 }
434
435 /**
436 * vpbe_s_std - Set the given standard in the encoder
437 *
438 * Sets the standard if supported by the current encoder. Return the status.
439 * 0 - success & -EINVAL on error
440 */
vpbe_s_std(struct vpbe_device * vpbe_dev,v4l2_std_id std_id)441 static int vpbe_s_std(struct vpbe_device *vpbe_dev, v4l2_std_id std_id)
442 {
443 struct vpbe_config *cfg = vpbe_dev->cfg;
444 int out_index = vpbe_dev->current_out_index;
445 int sd_index = vpbe_dev->current_sd_index;
446 int ret;
447
448 if (!(cfg->outputs[out_index].output.capabilities &
449 V4L2_OUT_CAP_STD))
450 return -ENODATA;
451
452 ret = vpbe_get_std_info(vpbe_dev, std_id);
453 if (ret)
454 return ret;
455
456 mutex_lock(&vpbe_dev->lock);
457
458 ret = v4l2_subdev_call(vpbe_dev->encoders[sd_index], video,
459 s_std_output, std_id);
460 /* set the lcd controller output for the given mode */
461 if (!ret) {
462 struct osd_state *osd_device = vpbe_dev->osd_device;
463
464 osd_device->ops.set_left_margin(osd_device,
465 vpbe_dev->current_timings.left_margin);
466 osd_device->ops.set_top_margin(osd_device,
467 vpbe_dev->current_timings.upper_margin);
468 }
469 mutex_unlock(&vpbe_dev->lock);
470
471 return ret;
472 }
473
474 /**
475 * vpbe_g_std - Get the standard in the current encoder
476 *
477 * Get the standard in the current encoder. Return the status. 0 - success
478 * -EINVAL on error
479 */
vpbe_g_std(struct vpbe_device * vpbe_dev,v4l2_std_id * std_id)480 static int vpbe_g_std(struct vpbe_device *vpbe_dev, v4l2_std_id *std_id)
481 {
482 struct vpbe_enc_mode_info *cur_timings = &vpbe_dev->current_timings;
483 struct vpbe_config *cfg = vpbe_dev->cfg;
484 int out_index = vpbe_dev->current_out_index;
485
486 if (!(cfg->outputs[out_index].output.capabilities & V4L2_OUT_CAP_STD))
487 return -ENODATA;
488
489 if (cur_timings->timings_type & VPBE_ENC_STD) {
490 *std_id = cur_timings->std_id;
491 return 0;
492 }
493
494 return -EINVAL;
495 }
496
497 /**
498 * vpbe_set_mode - Set mode in the current encoder using mode info
499 *
500 * Use the mode string to decide what timings to set in the encoder
501 * This is typically useful when fbset command is used to change the current
502 * timings by specifying a string to indicate the timings.
503 */
vpbe_set_mode(struct vpbe_device * vpbe_dev,struct vpbe_enc_mode_info * mode_info)504 static int vpbe_set_mode(struct vpbe_device *vpbe_dev,
505 struct vpbe_enc_mode_info *mode_info)
506 {
507 struct vpbe_enc_mode_info *preset_mode = NULL;
508 struct vpbe_config *cfg = vpbe_dev->cfg;
509 struct v4l2_dv_timings dv_timings;
510 struct osd_state *osd_device;
511 int out_index = vpbe_dev->current_out_index;
512 int ret = 0;
513 int i;
514
515 if ((NULL == mode_info) || (NULL == mode_info->name))
516 return -EINVAL;
517
518 for (i = 0; i < cfg->outputs[out_index].num_modes; i++) {
519 if (!strcmp(mode_info->name,
520 cfg->outputs[out_index].modes[i].name)) {
521 preset_mode = &cfg->outputs[out_index].modes[i];
522 /*
523 * it may be one of the 3 timings type. Check and
524 * invoke right API
525 */
526 if (preset_mode->timings_type & VPBE_ENC_STD)
527 return vpbe_s_std(vpbe_dev,
528 preset_mode->std_id);
529 if (preset_mode->timings_type &
530 VPBE_ENC_DV_TIMINGS) {
531 dv_timings =
532 preset_mode->dv_timings;
533 return vpbe_s_dv_timings(vpbe_dev, &dv_timings);
534 }
535 }
536 }
537
538 /* Only custom timing should reach here */
539 if (preset_mode == NULL)
540 return -EINVAL;
541
542 mutex_lock(&vpbe_dev->lock);
543
544 osd_device = vpbe_dev->osd_device;
545 vpbe_dev->current_timings = *preset_mode;
546 osd_device->ops.set_left_margin(osd_device,
547 vpbe_dev->current_timings.left_margin);
548 osd_device->ops.set_top_margin(osd_device,
549 vpbe_dev->current_timings.upper_margin);
550
551 mutex_unlock(&vpbe_dev->lock);
552
553 return ret;
554 }
555
vpbe_set_default_mode(struct vpbe_device * vpbe_dev)556 static int vpbe_set_default_mode(struct vpbe_device *vpbe_dev)
557 {
558 int ret;
559
560 ret = vpbe_get_std_info_by_name(vpbe_dev, def_mode);
561 if (ret)
562 return ret;
563
564 /* set the default mode in the encoder */
565 return vpbe_set_mode(vpbe_dev, &vpbe_dev->current_timings);
566 }
567
platform_device_get(struct device * dev,void * data)568 static int platform_device_get(struct device *dev, void *data)
569 {
570 struct platform_device *pdev = to_platform_device(dev);
571 struct vpbe_device *vpbe_dev = data;
572
573 if (strstr(pdev->name, "vpbe-osd") != NULL)
574 vpbe_dev->osd_device = platform_get_drvdata(pdev);
575 if (strstr(pdev->name, "vpbe-venc") != NULL)
576 vpbe_dev->venc_device = dev_get_platdata(&pdev->dev);
577
578 return 0;
579 }
580
581 /**
582 * vpbe_initialize() - Initialize the vpbe display controller
583 * @vpbe_dev - vpbe device ptr
584 *
585 * Master frame buffer device drivers calls this to initialize vpbe
586 * display controller. This will then registers v4l2 device and the sub
587 * devices and sets a current encoder sub device for display. v4l2 display
588 * device driver is the master and frame buffer display device driver is
589 * the slave. Frame buffer display driver checks the initialized during
590 * probe and exit if not initialized. Returns status.
591 */
vpbe_initialize(struct device * dev,struct vpbe_device * vpbe_dev)592 static int vpbe_initialize(struct device *dev, struct vpbe_device *vpbe_dev)
593 {
594 struct encoder_config_info *enc_info;
595 struct amp_config_info *amp_info;
596 struct v4l2_subdev **enc_subdev;
597 struct osd_state *osd_device;
598 struct i2c_adapter *i2c_adap;
599 int num_encoders;
600 int ret = 0;
601 int err;
602 int i;
603
604 /*
605 * v4l2 abd FBDev frame buffer devices will get the vpbe_dev pointer
606 * from the platform device by iteration of platform drivers and
607 * matching with device name
608 */
609 if (NULL == vpbe_dev || NULL == dev) {
610 printk(KERN_ERR "Null device pointers.\n");
611 return -ENODEV;
612 }
613
614 if (vpbe_dev->initialized)
615 return 0;
616
617 mutex_lock(&vpbe_dev->lock);
618
619 if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
620 /* We have dac clock available for platform */
621 vpbe_dev->dac_clk = clk_get(vpbe_dev->pdev, "vpss_dac");
622 if (IS_ERR(vpbe_dev->dac_clk)) {
623 ret = PTR_ERR(vpbe_dev->dac_clk);
624 goto fail_mutex_unlock;
625 }
626 if (clk_prepare_enable(vpbe_dev->dac_clk)) {
627 ret = -ENODEV;
628 clk_put(vpbe_dev->dac_clk);
629 goto fail_mutex_unlock;
630 }
631 }
632
633 /* first enable vpss clocks */
634 vpss_enable_clock(VPSS_VPBE_CLOCK, 1);
635
636 /* First register a v4l2 device */
637 ret = v4l2_device_register(dev, &vpbe_dev->v4l2_dev);
638 if (ret) {
639 v4l2_err(dev->driver,
640 "Unable to register v4l2 device.\n");
641 goto fail_clk_put;
642 }
643 v4l2_info(&vpbe_dev->v4l2_dev, "vpbe v4l2 device registered\n");
644
645 err = bus_for_each_dev(&platform_bus_type, NULL, vpbe_dev,
646 platform_device_get);
647 if (err < 0) {
648 ret = err;
649 goto fail_dev_unregister;
650 }
651
652 vpbe_dev->venc = venc_sub_dev_init(&vpbe_dev->v4l2_dev,
653 vpbe_dev->cfg->venc.module_name);
654 /* register venc sub device */
655 if (vpbe_dev->venc == NULL) {
656 v4l2_err(&vpbe_dev->v4l2_dev,
657 "vpbe unable to init venc sub device\n");
658 ret = -ENODEV;
659 goto fail_dev_unregister;
660 }
661 /* initialize osd device */
662 osd_device = vpbe_dev->osd_device;
663
664 if (NULL != osd_device->ops.initialize) {
665 err = osd_device->ops.initialize(osd_device);
666 if (err) {
667 v4l2_err(&vpbe_dev->v4l2_dev,
668 "unable to initialize the OSD device");
669 err = -ENOMEM;
670 goto fail_dev_unregister;
671 }
672 }
673
674 /*
675 * Register any external encoders that are configured. At index 0 we
676 * store venc sd index.
677 */
678 num_encoders = vpbe_dev->cfg->num_ext_encoders + 1;
679 vpbe_dev->encoders = kmalloc(
680 sizeof(struct v4l2_subdev *)*num_encoders,
681 GFP_KERNEL);
682 if (NULL == vpbe_dev->encoders) {
683 v4l2_err(&vpbe_dev->v4l2_dev,
684 "unable to allocate memory for encoders sub devices");
685 ret = -ENOMEM;
686 goto fail_dev_unregister;
687 }
688
689 i2c_adap = i2c_get_adapter(vpbe_dev->cfg->i2c_adapter_id);
690 for (i = 0; i < (vpbe_dev->cfg->num_ext_encoders + 1); i++) {
691 if (i == 0) {
692 /* venc is at index 0 */
693 enc_subdev = &vpbe_dev->encoders[i];
694 *enc_subdev = vpbe_dev->venc;
695 continue;
696 }
697 enc_info = &vpbe_dev->cfg->ext_encoders[i];
698 if (enc_info->is_i2c) {
699 enc_subdev = &vpbe_dev->encoders[i];
700 *enc_subdev = v4l2_i2c_new_subdev_board(
701 &vpbe_dev->v4l2_dev, i2c_adap,
702 &enc_info->board_info, NULL);
703 if (*enc_subdev)
704 v4l2_info(&vpbe_dev->v4l2_dev,
705 "v4l2 sub device %s registered\n",
706 enc_info->module_name);
707 else {
708 v4l2_err(&vpbe_dev->v4l2_dev, "encoder %s"
709 " failed to register",
710 enc_info->module_name);
711 ret = -ENODEV;
712 goto fail_kfree_encoders;
713 }
714 } else
715 v4l2_warn(&vpbe_dev->v4l2_dev, "non-i2c encoders"
716 " currently not supported");
717 }
718 /* Add amplifier subdevice for dm365 */
719 if ((strcmp(vpbe_dev->cfg->module_name, "dm365-vpbe-display") == 0) &&
720 vpbe_dev->cfg->amp != NULL) {
721 amp_info = vpbe_dev->cfg->amp;
722 if (amp_info->is_i2c) {
723 vpbe_dev->amp = v4l2_i2c_new_subdev_board(
724 &vpbe_dev->v4l2_dev, i2c_adap,
725 &_info->board_info, NULL);
726 if (!vpbe_dev->amp) {
727 v4l2_err(&vpbe_dev->v4l2_dev,
728 "amplifier %s failed to register",
729 amp_info->module_name);
730 ret = -ENODEV;
731 goto fail_kfree_encoders;
732 }
733 v4l2_info(&vpbe_dev->v4l2_dev,
734 "v4l2 sub device %s registered\n",
735 amp_info->module_name);
736 } else {
737 vpbe_dev->amp = NULL;
738 v4l2_warn(&vpbe_dev->v4l2_dev, "non-i2c amplifiers"
739 " currently not supported");
740 }
741 } else {
742 vpbe_dev->amp = NULL;
743 }
744
745 /* set the current encoder and output to that of venc by default */
746 vpbe_dev->current_sd_index = 0;
747 vpbe_dev->current_out_index = 0;
748
749 mutex_unlock(&vpbe_dev->lock);
750
751 printk(KERN_NOTICE "Setting default output to %s\n", def_output);
752 ret = vpbe_set_default_output(vpbe_dev);
753 if (ret) {
754 v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set default output %s",
755 def_output);
756 return ret;
757 }
758
759 printk(KERN_NOTICE "Setting default mode to %s\n", def_mode);
760 ret = vpbe_set_default_mode(vpbe_dev);
761 if (ret) {
762 v4l2_err(&vpbe_dev->v4l2_dev, "Failed to set default mode %s",
763 def_mode);
764 return ret;
765 }
766 vpbe_dev->initialized = 1;
767 /* TBD handling of bootargs for default output and mode */
768 return 0;
769
770 fail_kfree_encoders:
771 kfree(vpbe_dev->encoders);
772 fail_dev_unregister:
773 v4l2_device_unregister(&vpbe_dev->v4l2_dev);
774 fail_clk_put:
775 if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
776 clk_disable_unprepare(vpbe_dev->dac_clk);
777 clk_put(vpbe_dev->dac_clk);
778 }
779 fail_mutex_unlock:
780 mutex_unlock(&vpbe_dev->lock);
781 return ret;
782 }
783
784 /**
785 * vpbe_deinitialize() - de-initialize the vpbe display controller
786 * @dev - Master and slave device ptr
787 *
788 * vpbe_master and slave frame buffer devices calls this to de-initialize
789 * the display controller. It is called when master and slave device
790 * driver modules are removed and no longer requires the display controller.
791 */
vpbe_deinitialize(struct device * dev,struct vpbe_device * vpbe_dev)792 static void vpbe_deinitialize(struct device *dev, struct vpbe_device *vpbe_dev)
793 {
794 v4l2_device_unregister(&vpbe_dev->v4l2_dev);
795 if (strcmp(vpbe_dev->cfg->module_name, "dm644x-vpbe-display") != 0) {
796 clk_disable_unprepare(vpbe_dev->dac_clk);
797 clk_put(vpbe_dev->dac_clk);
798 }
799
800 kfree(vpbe_dev->amp);
801 kfree(vpbe_dev->encoders);
802 vpbe_dev->initialized = 0;
803 /* disable vpss clocks */
804 vpss_enable_clock(VPSS_VPBE_CLOCK, 0);
805 }
806
807 static struct vpbe_device_ops vpbe_dev_ops = {
808 .g_cropcap = vpbe_g_cropcap,
809 .enum_outputs = vpbe_enum_outputs,
810 .set_output = vpbe_set_output,
811 .get_output = vpbe_get_output,
812 .s_dv_timings = vpbe_s_dv_timings,
813 .g_dv_timings = vpbe_g_dv_timings,
814 .enum_dv_timings = vpbe_enum_dv_timings,
815 .s_std = vpbe_s_std,
816 .g_std = vpbe_g_std,
817 .initialize = vpbe_initialize,
818 .deinitialize = vpbe_deinitialize,
819 .get_mode_info = vpbe_get_current_mode_info,
820 .set_mode = vpbe_set_mode,
821 };
822
vpbe_probe(struct platform_device * pdev)823 static int vpbe_probe(struct platform_device *pdev)
824 {
825 struct vpbe_device *vpbe_dev;
826 struct vpbe_config *cfg;
827 int ret = -EINVAL;
828
829 if (pdev->dev.platform_data == NULL) {
830 v4l2_err(pdev->dev.driver, "No platform data\n");
831 return -ENODEV;
832 }
833 cfg = pdev->dev.platform_data;
834
835 if (!cfg->module_name[0] ||
836 !cfg->osd.module_name[0] ||
837 !cfg->venc.module_name[0]) {
838 v4l2_err(pdev->dev.driver, "vpbe display module names not"
839 " defined\n");
840 return ret;
841 }
842
843 vpbe_dev = kzalloc(sizeof(*vpbe_dev), GFP_KERNEL);
844 if (vpbe_dev == NULL) {
845 v4l2_err(pdev->dev.driver, "Unable to allocate memory"
846 " for vpbe_device\n");
847 return -ENOMEM;
848 }
849 vpbe_dev->cfg = cfg;
850 vpbe_dev->ops = vpbe_dev_ops;
851 vpbe_dev->pdev = &pdev->dev;
852
853 if (cfg->outputs->num_modes > 0)
854 vpbe_dev->current_timings = vpbe_dev->cfg->outputs[0].modes[0];
855 else {
856 kfree(vpbe_dev);
857 return -ENODEV;
858 }
859
860 /* set the driver data in platform device */
861 platform_set_drvdata(pdev, vpbe_dev);
862 mutex_init(&vpbe_dev->lock);
863
864 return 0;
865 }
866
vpbe_remove(struct platform_device * device)867 static int vpbe_remove(struct platform_device *device)
868 {
869 struct vpbe_device *vpbe_dev = platform_get_drvdata(device);
870
871 kfree(vpbe_dev);
872
873 return 0;
874 }
875
876 static struct platform_driver vpbe_driver = {
877 .driver = {
878 .name = "vpbe_controller",
879 },
880 .probe = vpbe_probe,
881 .remove = vpbe_remove,
882 };
883
884 module_platform_driver(vpbe_driver);
885