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1/*
2 * Copyright (C) 2009 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#include <linux/module.h>
28
29#include "ch7006_priv.h"
30
31/* DRM encoder functions */
32
33static void ch7006_encoder_set_config(struct drm_encoder *encoder,
34 void *params)
35{
36 struct ch7006_priv *priv = to_ch7006_priv(encoder);
37
38 priv->params = *(struct ch7006_encoder_params *)params;
39}
40
41static void ch7006_encoder_destroy(struct drm_encoder *encoder)
42{
43 struct ch7006_priv *priv = to_ch7006_priv(encoder);
44
45 drm_property_destroy(encoder->dev, priv->scale_property);
46
47 kfree(priv);
48 to_encoder_slave(encoder)->slave_priv = NULL;
49
50 drm_i2c_encoder_destroy(encoder);
51}
52
53static void ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
54{
55 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
56 struct ch7006_priv *priv = to_ch7006_priv(encoder);
57 struct ch7006_state *state = &priv->state;
58
59 ch7006_dbg(client, "\n");
60
61 if (mode == priv->last_dpms)
62 return;
63 priv->last_dpms = mode;
64
65 ch7006_setup_power_state(encoder);
66
67 ch7006_load_reg(client, state, CH7006_POWER);
68}
69
70static void ch7006_encoder_save(struct drm_encoder *encoder)
71{
72 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
73 struct ch7006_priv *priv = to_ch7006_priv(encoder);
74
75 ch7006_dbg(client, "\n");
76
77 ch7006_state_save(client, &priv->saved_state);
78}
79
80static void ch7006_encoder_restore(struct drm_encoder *encoder)
81{
82 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
83 struct ch7006_priv *priv = to_ch7006_priv(encoder);
84
85 ch7006_dbg(client, "\n");
86
87 ch7006_state_load(client, &priv->saved_state);
88}
89
90static bool ch7006_encoder_mode_fixup(struct drm_encoder *encoder,
91 const struct drm_display_mode *mode,
92 struct drm_display_mode *adjusted_mode)
93{
94 struct ch7006_priv *priv = to_ch7006_priv(encoder);
95
96 /* The ch7006 is painfully picky with the input timings so no
97 * custom modes for now... */
98
99 priv->mode = ch7006_lookup_mode(encoder, mode);
100
101 return !!priv->mode;
102}
103
104static int ch7006_encoder_mode_valid(struct drm_encoder *encoder,
105 struct drm_display_mode *mode)
106{
107 if (ch7006_lookup_mode(encoder, mode))
108 return MODE_OK;
109 else
110 return MODE_BAD;
111}
112
113static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
114 struct drm_display_mode *drm_mode,
115 struct drm_display_mode *adjusted_mode)
116{
117 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
118 struct ch7006_priv *priv = to_ch7006_priv(encoder);
119 struct ch7006_encoder_params *params = &priv->params;
120 struct ch7006_state *state = &priv->state;
121 uint8_t *regs = state->regs;
122 const struct ch7006_mode *mode = priv->mode;
123 const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
124 int start_active;
125
126 ch7006_dbg(client, "\n");
127
128 regs[CH7006_DISPMODE] = norm->dispmode | mode->dispmode;
129 regs[CH7006_BWIDTH] = 0;
130 regs[CH7006_INPUT_FORMAT] = bitf(CH7006_INPUT_FORMAT_FORMAT,
131 params->input_format);
132
133 regs[CH7006_CLKMODE] = CH7006_CLKMODE_SUBC_LOCK
134 | bitf(CH7006_CLKMODE_XCM, params->xcm)
135 | bitf(CH7006_CLKMODE_PCM, params->pcm);
136 if (params->clock_mode)
137 regs[CH7006_CLKMODE] |= CH7006_CLKMODE_MASTER;
138 if (params->clock_edge)
139 regs[CH7006_CLKMODE] |= CH7006_CLKMODE_POS_EDGE;
140
141 start_active = (drm_mode->htotal & ~0x7) - (drm_mode->hsync_start & ~0x7);
142 regs[CH7006_POV] = bitf(CH7006_POV_START_ACTIVE_8, start_active);
143 regs[CH7006_START_ACTIVE] = bitf(CH7006_START_ACTIVE_0, start_active);
144
145 regs[CH7006_INPUT_SYNC] = 0;
146 if (params->sync_direction)
147 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_OUTPUT;
148 if (params->sync_encoding)
149 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_EMBEDDED;
150 if (drm_mode->flags & DRM_MODE_FLAG_PVSYNC)
151 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_PVSYNC;
152 if (drm_mode->flags & DRM_MODE_FLAG_PHSYNC)
153 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_PHSYNC;
154
155 regs[CH7006_DETECT] = 0;
156 regs[CH7006_BCLKOUT] = 0;
157
158 regs[CH7006_SUBC_INC3] = 0;
159 if (params->pout_level)
160 regs[CH7006_SUBC_INC3] |= CH7006_SUBC_INC3_POUT_3_3V;
161
162 regs[CH7006_SUBC_INC4] = 0;
163 if (params->active_detect)
164 regs[CH7006_SUBC_INC4] |= CH7006_SUBC_INC4_DS_INPUT;
165
166 regs[CH7006_PLL_CONTROL] = priv->saved_state.regs[CH7006_PLL_CONTROL];
167
168 ch7006_setup_levels(encoder);
169 ch7006_setup_subcarrier(encoder);
170 ch7006_setup_pll(encoder);
171 ch7006_setup_power_state(encoder);
172 ch7006_setup_properties(encoder);
173
174 ch7006_state_load(client, state);
175}
176
177static enum drm_connector_status ch7006_encoder_detect(struct drm_encoder *encoder,
178 struct drm_connector *connector)
179{
180 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
181 struct ch7006_priv *priv = to_ch7006_priv(encoder);
182 struct ch7006_state *state = &priv->state;
183 int det;
184
185 ch7006_dbg(client, "\n");
186
187 ch7006_save_reg(client, state, CH7006_DETECT);
188 ch7006_save_reg(client, state, CH7006_POWER);
189 ch7006_save_reg(client, state, CH7006_CLKMODE);
190
191 ch7006_write(client, CH7006_POWER, CH7006_POWER_RESET |
192 bitfs(CH7006_POWER_LEVEL, NORMAL));
193 ch7006_write(client, CH7006_CLKMODE, CH7006_CLKMODE_MASTER);
194
195 ch7006_write(client, CH7006_DETECT, CH7006_DETECT_SENSE);
196
197 ch7006_write(client, CH7006_DETECT, 0);
198
199 det = ch7006_read(client, CH7006_DETECT);
200
201 ch7006_load_reg(client, state, CH7006_CLKMODE);
202 ch7006_load_reg(client, state, CH7006_POWER);
203 ch7006_load_reg(client, state, CH7006_DETECT);
204
205 if ((det & (CH7006_DETECT_SVIDEO_Y_TEST|
206 CH7006_DETECT_SVIDEO_C_TEST|
207 CH7006_DETECT_CVBS_TEST)) == 0)
208 priv->subconnector = DRM_MODE_SUBCONNECTOR_SCART;
209 else if ((det & (CH7006_DETECT_SVIDEO_Y_TEST|
210 CH7006_DETECT_SVIDEO_C_TEST)) == 0)
211 priv->subconnector = DRM_MODE_SUBCONNECTOR_SVIDEO;
212 else if ((det & CH7006_DETECT_CVBS_TEST) == 0)
213 priv->subconnector = DRM_MODE_SUBCONNECTOR_Composite;
214 else
215 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
216
217 drm_object_property_set_value(&connector->base,
218 encoder->dev->mode_config.tv_subconnector_property,
219 priv->subconnector);
220
221 return priv->subconnector ? connector_status_connected :
222 connector_status_disconnected;
223}
224
225static int ch7006_encoder_get_modes(struct drm_encoder *encoder,
226 struct drm_connector *connector)
227{
228 struct ch7006_priv *priv = to_ch7006_priv(encoder);
229 const struct ch7006_mode *mode;
230 int n = 0;
231
232 for (mode = ch7006_modes; mode->mode.clock; mode++) {
233 if (~mode->valid_scales & 1<<priv->scale ||
234 ~mode->valid_norms & 1<<priv->norm)
235 continue;
236
237 drm_mode_probed_add(connector,
238 drm_mode_duplicate(encoder->dev, &mode->mode));
239
240 n++;
241 }
242
243 return n;
244}
245
246static int ch7006_encoder_create_resources(struct drm_encoder *encoder,
247 struct drm_connector *connector)
248{
249 struct ch7006_priv *priv = to_ch7006_priv(encoder);
250 struct drm_device *dev = encoder->dev;
251 struct drm_mode_config *conf = &dev->mode_config;
252
253 drm_mode_create_tv_properties(dev, NUM_TV_NORMS, ch7006_tv_norm_names);
254
255 priv->scale_property = drm_property_create_range(dev, 0, "scale", 0, 2);
256 if (!priv->scale_property)
257 return -ENOMEM;
258
259 drm_object_attach_property(&connector->base, conf->tv_select_subconnector_property,
260 priv->select_subconnector);
261 drm_object_attach_property(&connector->base, conf->tv_subconnector_property,
262 priv->subconnector);
263 drm_object_attach_property(&connector->base, conf->tv_left_margin_property,
264 priv->hmargin);
265 drm_object_attach_property(&connector->base, conf->tv_bottom_margin_property,
266 priv->vmargin);
267 drm_object_attach_property(&connector->base, conf->tv_mode_property,
268 priv->norm);
269 drm_object_attach_property(&connector->base, conf->tv_brightness_property,
270 priv->brightness);
271 drm_object_attach_property(&connector->base, conf->tv_contrast_property,
272 priv->contrast);
273 drm_object_attach_property(&connector->base, conf->tv_flicker_reduction_property,
274 priv->flicker);
275 drm_object_attach_property(&connector->base, priv->scale_property,
276 priv->scale);
277
278 return 0;
279}
280
281static int ch7006_encoder_set_property(struct drm_encoder *encoder,
282 struct drm_connector *connector,
283 struct drm_property *property,
284 uint64_t val)
285{
286 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
287 struct ch7006_priv *priv = to_ch7006_priv(encoder);
288 struct ch7006_state *state = &priv->state;
289 struct drm_mode_config *conf = &encoder->dev->mode_config;
290 struct drm_crtc *crtc = encoder->crtc;
291 bool modes_changed = false;
292
293 ch7006_dbg(client, "\n");
294
295 if (property == conf->tv_select_subconnector_property) {
296 priv->select_subconnector = val;
297
298 ch7006_setup_power_state(encoder);
299
300 ch7006_load_reg(client, state, CH7006_POWER);
301
302 } else if (property == conf->tv_left_margin_property) {
303 priv->hmargin = val;
304
305 ch7006_setup_properties(encoder);
306
307 ch7006_load_reg(client, state, CH7006_POV);
308 ch7006_load_reg(client, state, CH7006_HPOS);
309
310 } else if (property == conf->tv_bottom_margin_property) {
311 priv->vmargin = val;
312
313 ch7006_setup_properties(encoder);
314
315 ch7006_load_reg(client, state, CH7006_POV);
316 ch7006_load_reg(client, state, CH7006_VPOS);
317
318 } else if (property == conf->tv_mode_property) {
319 if (connector->dpms != DRM_MODE_DPMS_OFF)
320 return -EINVAL;
321
322 priv->norm = val;
323
324 modes_changed = true;
325
326 } else if (property == conf->tv_brightness_property) {
327 priv->brightness = val;
328
329 ch7006_setup_levels(encoder);
330
331 ch7006_load_reg(client, state, CH7006_BLACK_LEVEL);
332
333 } else if (property == conf->tv_contrast_property) {
334 priv->contrast = val;
335
336 ch7006_setup_properties(encoder);
337
338 ch7006_load_reg(client, state, CH7006_CONTRAST);
339
340 } else if (property == conf->tv_flicker_reduction_property) {
341 priv->flicker = val;
342
343 ch7006_setup_properties(encoder);
344
345 ch7006_load_reg(client, state, CH7006_FFILTER);
346
347 } else if (property == priv->scale_property) {
348 if (connector->dpms != DRM_MODE_DPMS_OFF)
349 return -EINVAL;
350
351 priv->scale = val;
352
353 modes_changed = true;
354
355 } else {
356 return -EINVAL;
357 }
358
359 if (modes_changed) {
360 drm_helper_probe_single_connector_modes(connector, 0, 0);
361
362 /* Disable the crtc to ensure a full modeset is
363 * performed whenever it's turned on again. */
364 if (crtc) {
365 struct drm_mode_set modeset = {
366 .crtc = crtc,
367 };
368
369 drm_mode_set_config_internal(&modeset);
370 }
371 }
372
373 return 0;
374}
375
376static const struct drm_encoder_slave_funcs ch7006_encoder_funcs = {
377 .set_config = ch7006_encoder_set_config,
378 .destroy = ch7006_encoder_destroy,
379 .dpms = ch7006_encoder_dpms,
380 .save = ch7006_encoder_save,
381 .restore = ch7006_encoder_restore,
382 .mode_fixup = ch7006_encoder_mode_fixup,
383 .mode_valid = ch7006_encoder_mode_valid,
384 .mode_set = ch7006_encoder_mode_set,
385 .detect = ch7006_encoder_detect,
386 .get_modes = ch7006_encoder_get_modes,
387 .create_resources = ch7006_encoder_create_resources,
388 .set_property = ch7006_encoder_set_property,
389};
390
391
392/* I2C driver functions */
393
394static int ch7006_probe(struct i2c_client *client, const struct i2c_device_id *id)
395{
396 uint8_t addr = CH7006_VERSION_ID;
397 uint8_t val;
398 int ret;
399
400 ch7006_dbg(client, "\n");
401
402 ret = i2c_master_send(client, &addr, sizeof(addr));
403 if (ret < 0)
404 goto fail;
405
406 ret = i2c_master_recv(client, &val, sizeof(val));
407 if (ret < 0)
408 goto fail;
409
410 ch7006_info(client, "Detected version ID: %x\n", val);
411
412 /* I don't know what this is for, but otherwise I get no
413 * signal.
414 */
415 ch7006_write(client, 0x3d, 0x0);
416
417 return 0;
418
419fail:
420 ch7006_err(client, "Error %d reading version ID\n", ret);
421
422 return -ENODEV;
423}
424
425static int ch7006_remove(struct i2c_client *client)
426{
427 ch7006_dbg(client, "\n");
428
429 return 0;
430}
431
432static int ch7006_resume(struct device *dev)
433{
434 struct i2c_client *client = to_i2c_client(dev);
435
436 ch7006_dbg(client, "\n");
437
438 ch7006_write(client, 0x3d, 0x0);
439
440 return 0;
441}
442
443static int ch7006_encoder_init(struct i2c_client *client,
444 struct drm_device *dev,
445 struct drm_encoder_slave *encoder)
446{
447 struct ch7006_priv *priv;
448 int i;
449
450 ch7006_dbg(client, "\n");
451
452 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
453 if (!priv)
454 return -ENOMEM;
455
456 encoder->slave_priv = priv;
457 encoder->slave_funcs = &ch7006_encoder_funcs;
458
459 priv->norm = TV_NORM_PAL;
460 priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
461 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
462 priv->scale = 1;
463 priv->contrast = 50;
464 priv->brightness = 50;
465 priv->flicker = 50;
466 priv->hmargin = 50;
467 priv->vmargin = 50;
468 priv->last_dpms = -1;
469 priv->chip_version = ch7006_read(client, CH7006_VERSION_ID);
470
471 if (ch7006_tv_norm) {
472 for (i = 0; i < NUM_TV_NORMS; i++) {
473 if (!strcmp(ch7006_tv_norm_names[i], ch7006_tv_norm)) {
474 priv->norm = i;
475 break;
476 }
477 }
478
479 if (i == NUM_TV_NORMS)
480 ch7006_err(client, "Invalid TV norm setting \"%s\".\n",
481 ch7006_tv_norm);
482 }
483
484 if (ch7006_scale >= 0 && ch7006_scale <= 2)
485 priv->scale = ch7006_scale;
486 else
487 ch7006_err(client, "Invalid scale setting \"%d\".\n",
488 ch7006_scale);
489
490 return 0;
491}
492
493static struct i2c_device_id ch7006_ids[] = {
494 { "ch7006", 0 },
495 { }
496};
497MODULE_DEVICE_TABLE(i2c, ch7006_ids);
498
499static const struct dev_pm_ops ch7006_pm_ops = {
500 .resume = ch7006_resume,
501};
502
503static struct drm_i2c_encoder_driver ch7006_driver = {
504 .i2c_driver = {
505 .probe = ch7006_probe,
506 .remove = ch7006_remove,
507
508 .driver = {
509 .name = "ch7006",
510 .pm = &ch7006_pm_ops,
511 },
512
513 .id_table = ch7006_ids,
514 },
515
516 .encoder_init = ch7006_encoder_init,
517};
518
519
520/* Module initialization */
521
522static int __init ch7006_init(void)
523{
524 return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
525}
526
527static void __exit ch7006_exit(void)
528{
529 drm_i2c_encoder_unregister(&ch7006_driver);
530}
531
532int ch7006_debug;
533module_param_named(debug, ch7006_debug, int, 0600);
534MODULE_PARM_DESC(debug, "Enable debug output.");
535
536char *ch7006_tv_norm;
537module_param_named(tv_norm, ch7006_tv_norm, charp, 0600);
538MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
539 "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, PAL-60, NTSC-M, NTSC-J.\n"
540 "\t\tDefault: PAL");
541
542int ch7006_scale = 1;
543module_param_named(scale, ch7006_scale, int, 0600);
544MODULE_PARM_DESC(scale, "Default scale.\n"
545 "\t\tSupported: 0 -> Select video modes with a higher blanking ratio.\n"
546 "\t\t\t1 -> Select default video modes.\n"
547 "\t\t\t2 -> Select video modes with a lower blanking ratio.");
548
549MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
550MODULE_DESCRIPTION("Chrontel ch7006 TV encoder driver");
551MODULE_LICENSE("GPL and additional rights");
552
553module_init(ch7006_init);
554module_exit(ch7006_exit);
1/*
2 * Copyright (C) 2009 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#include "ch7006_priv.h"
28
29/* DRM encoder functions */
30
31static void ch7006_encoder_set_config(struct drm_encoder *encoder,
32 void *params)
33{
34 struct ch7006_priv *priv = to_ch7006_priv(encoder);
35
36 priv->params = *(struct ch7006_encoder_params *)params;
37}
38
39static void ch7006_encoder_destroy(struct drm_encoder *encoder)
40{
41 struct ch7006_priv *priv = to_ch7006_priv(encoder);
42
43 drm_property_destroy(encoder->dev, priv->scale_property);
44
45 kfree(priv);
46 to_encoder_slave(encoder)->slave_priv = NULL;
47
48 drm_i2c_encoder_destroy(encoder);
49}
50
51static void ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
52{
53 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
54 struct ch7006_priv *priv = to_ch7006_priv(encoder);
55 struct ch7006_state *state = &priv->state;
56
57 ch7006_dbg(client, "\n");
58
59 if (mode == priv->last_dpms)
60 return;
61 priv->last_dpms = mode;
62
63 ch7006_setup_power_state(encoder);
64
65 ch7006_load_reg(client, state, CH7006_POWER);
66}
67
68static void ch7006_encoder_save(struct drm_encoder *encoder)
69{
70 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
71 struct ch7006_priv *priv = to_ch7006_priv(encoder);
72
73 ch7006_dbg(client, "\n");
74
75 ch7006_state_save(client, &priv->saved_state);
76}
77
78static void ch7006_encoder_restore(struct drm_encoder *encoder)
79{
80 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
81 struct ch7006_priv *priv = to_ch7006_priv(encoder);
82
83 ch7006_dbg(client, "\n");
84
85 ch7006_state_load(client, &priv->saved_state);
86}
87
88static bool ch7006_encoder_mode_fixup(struct drm_encoder *encoder,
89 struct drm_display_mode *mode,
90 struct drm_display_mode *adjusted_mode)
91{
92 struct ch7006_priv *priv = to_ch7006_priv(encoder);
93
94 /* The ch7006 is painfully picky with the input timings so no
95 * custom modes for now... */
96
97 priv->mode = ch7006_lookup_mode(encoder, mode);
98
99 return !!priv->mode;
100}
101
102static int ch7006_encoder_mode_valid(struct drm_encoder *encoder,
103 struct drm_display_mode *mode)
104{
105 if (ch7006_lookup_mode(encoder, mode))
106 return MODE_OK;
107 else
108 return MODE_BAD;
109}
110
111static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
112 struct drm_display_mode *drm_mode,
113 struct drm_display_mode *adjusted_mode)
114{
115 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
116 struct ch7006_priv *priv = to_ch7006_priv(encoder);
117 struct ch7006_encoder_params *params = &priv->params;
118 struct ch7006_state *state = &priv->state;
119 uint8_t *regs = state->regs;
120 struct ch7006_mode *mode = priv->mode;
121 struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
122 int start_active;
123
124 ch7006_dbg(client, "\n");
125
126 regs[CH7006_DISPMODE] = norm->dispmode | mode->dispmode;
127 regs[CH7006_BWIDTH] = 0;
128 regs[CH7006_INPUT_FORMAT] = bitf(CH7006_INPUT_FORMAT_FORMAT,
129 params->input_format);
130
131 regs[CH7006_CLKMODE] = CH7006_CLKMODE_SUBC_LOCK
132 | bitf(CH7006_CLKMODE_XCM, params->xcm)
133 | bitf(CH7006_CLKMODE_PCM, params->pcm);
134 if (params->clock_mode)
135 regs[CH7006_CLKMODE] |= CH7006_CLKMODE_MASTER;
136 if (params->clock_edge)
137 regs[CH7006_CLKMODE] |= CH7006_CLKMODE_POS_EDGE;
138
139 start_active = (drm_mode->htotal & ~0x7) - (drm_mode->hsync_start & ~0x7);
140 regs[CH7006_POV] = bitf(CH7006_POV_START_ACTIVE_8, start_active);
141 regs[CH7006_START_ACTIVE] = bitf(CH7006_START_ACTIVE_0, start_active);
142
143 regs[CH7006_INPUT_SYNC] = 0;
144 if (params->sync_direction)
145 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_OUTPUT;
146 if (params->sync_encoding)
147 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_EMBEDDED;
148 if (drm_mode->flags & DRM_MODE_FLAG_PVSYNC)
149 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_PVSYNC;
150 if (drm_mode->flags & DRM_MODE_FLAG_PHSYNC)
151 regs[CH7006_INPUT_SYNC] |= CH7006_INPUT_SYNC_PHSYNC;
152
153 regs[CH7006_DETECT] = 0;
154 regs[CH7006_BCLKOUT] = 0;
155
156 regs[CH7006_SUBC_INC3] = 0;
157 if (params->pout_level)
158 regs[CH7006_SUBC_INC3] |= CH7006_SUBC_INC3_POUT_3_3V;
159
160 regs[CH7006_SUBC_INC4] = 0;
161 if (params->active_detect)
162 regs[CH7006_SUBC_INC4] |= CH7006_SUBC_INC4_DS_INPUT;
163
164 regs[CH7006_PLL_CONTROL] = priv->saved_state.regs[CH7006_PLL_CONTROL];
165
166 ch7006_setup_levels(encoder);
167 ch7006_setup_subcarrier(encoder);
168 ch7006_setup_pll(encoder);
169 ch7006_setup_power_state(encoder);
170 ch7006_setup_properties(encoder);
171
172 ch7006_state_load(client, state);
173}
174
175static enum drm_connector_status ch7006_encoder_detect(struct drm_encoder *encoder,
176 struct drm_connector *connector)
177{
178 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
179 struct ch7006_priv *priv = to_ch7006_priv(encoder);
180 struct ch7006_state *state = &priv->state;
181 int det;
182
183 ch7006_dbg(client, "\n");
184
185 ch7006_save_reg(client, state, CH7006_DETECT);
186 ch7006_save_reg(client, state, CH7006_POWER);
187 ch7006_save_reg(client, state, CH7006_CLKMODE);
188
189 ch7006_write(client, CH7006_POWER, CH7006_POWER_RESET |
190 bitfs(CH7006_POWER_LEVEL, NORMAL));
191 ch7006_write(client, CH7006_CLKMODE, CH7006_CLKMODE_MASTER);
192
193 ch7006_write(client, CH7006_DETECT, CH7006_DETECT_SENSE);
194
195 ch7006_write(client, CH7006_DETECT, 0);
196
197 det = ch7006_read(client, CH7006_DETECT);
198
199 ch7006_load_reg(client, state, CH7006_CLKMODE);
200 ch7006_load_reg(client, state, CH7006_POWER);
201 ch7006_load_reg(client, state, CH7006_DETECT);
202
203 if ((det & (CH7006_DETECT_SVIDEO_Y_TEST|
204 CH7006_DETECT_SVIDEO_C_TEST|
205 CH7006_DETECT_CVBS_TEST)) == 0)
206 priv->subconnector = DRM_MODE_SUBCONNECTOR_SCART;
207 else if ((det & (CH7006_DETECT_SVIDEO_Y_TEST|
208 CH7006_DETECT_SVIDEO_C_TEST)) == 0)
209 priv->subconnector = DRM_MODE_SUBCONNECTOR_SVIDEO;
210 else if ((det & CH7006_DETECT_CVBS_TEST) == 0)
211 priv->subconnector = DRM_MODE_SUBCONNECTOR_Composite;
212 else
213 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
214
215 drm_connector_property_set_value(connector,
216 encoder->dev->mode_config.tv_subconnector_property,
217 priv->subconnector);
218
219 return priv->subconnector ? connector_status_connected :
220 connector_status_disconnected;
221}
222
223static int ch7006_encoder_get_modes(struct drm_encoder *encoder,
224 struct drm_connector *connector)
225{
226 struct ch7006_priv *priv = to_ch7006_priv(encoder);
227 struct ch7006_mode *mode;
228 int n = 0;
229
230 for (mode = ch7006_modes; mode->mode.clock; mode++) {
231 if (~mode->valid_scales & 1<<priv->scale ||
232 ~mode->valid_norms & 1<<priv->norm)
233 continue;
234
235 drm_mode_probed_add(connector,
236 drm_mode_duplicate(encoder->dev, &mode->mode));
237
238 n++;
239 }
240
241 return n;
242}
243
244static int ch7006_encoder_create_resources(struct drm_encoder *encoder,
245 struct drm_connector *connector)
246{
247 struct ch7006_priv *priv = to_ch7006_priv(encoder);
248 struct drm_device *dev = encoder->dev;
249 struct drm_mode_config *conf = &dev->mode_config;
250
251 drm_mode_create_tv_properties(dev, NUM_TV_NORMS, ch7006_tv_norm_names);
252
253 priv->scale_property = drm_property_create(dev, DRM_MODE_PROP_RANGE,
254 "scale", 2);
255 priv->scale_property->values[0] = 0;
256 priv->scale_property->values[1] = 2;
257
258 drm_connector_attach_property(connector, conf->tv_select_subconnector_property,
259 priv->select_subconnector);
260 drm_connector_attach_property(connector, conf->tv_subconnector_property,
261 priv->subconnector);
262 drm_connector_attach_property(connector, conf->tv_left_margin_property,
263 priv->hmargin);
264 drm_connector_attach_property(connector, conf->tv_bottom_margin_property,
265 priv->vmargin);
266 drm_connector_attach_property(connector, conf->tv_mode_property,
267 priv->norm);
268 drm_connector_attach_property(connector, conf->tv_brightness_property,
269 priv->brightness);
270 drm_connector_attach_property(connector, conf->tv_contrast_property,
271 priv->contrast);
272 drm_connector_attach_property(connector, conf->tv_flicker_reduction_property,
273 priv->flicker);
274 drm_connector_attach_property(connector, priv->scale_property,
275 priv->scale);
276
277 return 0;
278}
279
280static int ch7006_encoder_set_property(struct drm_encoder *encoder,
281 struct drm_connector *connector,
282 struct drm_property *property,
283 uint64_t val)
284{
285 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
286 struct ch7006_priv *priv = to_ch7006_priv(encoder);
287 struct ch7006_state *state = &priv->state;
288 struct drm_mode_config *conf = &encoder->dev->mode_config;
289 struct drm_crtc *crtc = encoder->crtc;
290 bool modes_changed = false;
291
292 ch7006_dbg(client, "\n");
293
294 if (property == conf->tv_select_subconnector_property) {
295 priv->select_subconnector = val;
296
297 ch7006_setup_power_state(encoder);
298
299 ch7006_load_reg(client, state, CH7006_POWER);
300
301 } else if (property == conf->tv_left_margin_property) {
302 priv->hmargin = val;
303
304 ch7006_setup_properties(encoder);
305
306 ch7006_load_reg(client, state, CH7006_POV);
307 ch7006_load_reg(client, state, CH7006_HPOS);
308
309 } else if (property == conf->tv_bottom_margin_property) {
310 priv->vmargin = val;
311
312 ch7006_setup_properties(encoder);
313
314 ch7006_load_reg(client, state, CH7006_POV);
315 ch7006_load_reg(client, state, CH7006_VPOS);
316
317 } else if (property == conf->tv_mode_property) {
318 if (connector->dpms != DRM_MODE_DPMS_OFF)
319 return -EINVAL;
320
321 priv->norm = val;
322
323 modes_changed = true;
324
325 } else if (property == conf->tv_brightness_property) {
326 priv->brightness = val;
327
328 ch7006_setup_levels(encoder);
329
330 ch7006_load_reg(client, state, CH7006_BLACK_LEVEL);
331
332 } else if (property == conf->tv_contrast_property) {
333 priv->contrast = val;
334
335 ch7006_setup_properties(encoder);
336
337 ch7006_load_reg(client, state, CH7006_CONTRAST);
338
339 } else if (property == conf->tv_flicker_reduction_property) {
340 priv->flicker = val;
341
342 ch7006_setup_properties(encoder);
343
344 ch7006_load_reg(client, state, CH7006_FFILTER);
345
346 } else if (property == priv->scale_property) {
347 if (connector->dpms != DRM_MODE_DPMS_OFF)
348 return -EINVAL;
349
350 priv->scale = val;
351
352 modes_changed = true;
353
354 } else {
355 return -EINVAL;
356 }
357
358 if (modes_changed) {
359 drm_helper_probe_single_connector_modes(connector, 0, 0);
360
361 /* Disable the crtc to ensure a full modeset is
362 * performed whenever it's turned on again. */
363 if (crtc) {
364 struct drm_mode_set modeset = {
365 .crtc = crtc,
366 };
367
368 crtc->funcs->set_config(&modeset);
369 }
370 }
371
372 return 0;
373}
374
375static struct drm_encoder_slave_funcs ch7006_encoder_funcs = {
376 .set_config = ch7006_encoder_set_config,
377 .destroy = ch7006_encoder_destroy,
378 .dpms = ch7006_encoder_dpms,
379 .save = ch7006_encoder_save,
380 .restore = ch7006_encoder_restore,
381 .mode_fixup = ch7006_encoder_mode_fixup,
382 .mode_valid = ch7006_encoder_mode_valid,
383 .mode_set = ch7006_encoder_mode_set,
384 .detect = ch7006_encoder_detect,
385 .get_modes = ch7006_encoder_get_modes,
386 .create_resources = ch7006_encoder_create_resources,
387 .set_property = ch7006_encoder_set_property,
388};
389
390
391/* I2C driver functions */
392
393static int ch7006_probe(struct i2c_client *client, const struct i2c_device_id *id)
394{
395 uint8_t addr = CH7006_VERSION_ID;
396 uint8_t val;
397 int ret;
398
399 ch7006_dbg(client, "\n");
400
401 ret = i2c_master_send(client, &addr, sizeof(addr));
402 if (ret < 0)
403 goto fail;
404
405 ret = i2c_master_recv(client, &val, sizeof(val));
406 if (ret < 0)
407 goto fail;
408
409 ch7006_info(client, "Detected version ID: %x\n", val);
410
411 /* I don't know what this is for, but otherwise I get no
412 * signal.
413 */
414 ch7006_write(client, 0x3d, 0x0);
415
416 return 0;
417
418fail:
419 ch7006_err(client, "Error %d reading version ID\n", ret);
420
421 return -ENODEV;
422}
423
424static int ch7006_remove(struct i2c_client *client)
425{
426 ch7006_dbg(client, "\n");
427
428 return 0;
429}
430
431static int ch7006_suspend(struct i2c_client *client, pm_message_t mesg)
432{
433 ch7006_dbg(client, "\n");
434
435 return 0;
436}
437
438static int ch7006_resume(struct i2c_client *client)
439{
440 ch7006_dbg(client, "\n");
441
442 ch7006_write(client, 0x3d, 0x0);
443
444 return 0;
445}
446
447static int ch7006_encoder_init(struct i2c_client *client,
448 struct drm_device *dev,
449 struct drm_encoder_slave *encoder)
450{
451 struct ch7006_priv *priv;
452 int i;
453
454 ch7006_dbg(client, "\n");
455
456 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
457 if (!priv)
458 return -ENOMEM;
459
460 encoder->slave_priv = priv;
461 encoder->slave_funcs = &ch7006_encoder_funcs;
462
463 priv->norm = TV_NORM_PAL;
464 priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
465 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
466 priv->scale = 1;
467 priv->contrast = 50;
468 priv->brightness = 50;
469 priv->flicker = 50;
470 priv->hmargin = 50;
471 priv->vmargin = 50;
472 priv->last_dpms = -1;
473 priv->chip_version = ch7006_read(client, CH7006_VERSION_ID);
474
475 if (ch7006_tv_norm) {
476 for (i = 0; i < NUM_TV_NORMS; i++) {
477 if (!strcmp(ch7006_tv_norm_names[i], ch7006_tv_norm)) {
478 priv->norm = i;
479 break;
480 }
481 }
482
483 if (i == NUM_TV_NORMS)
484 ch7006_err(client, "Invalid TV norm setting \"%s\".\n",
485 ch7006_tv_norm);
486 }
487
488 if (ch7006_scale >= 0 && ch7006_scale <= 2)
489 priv->scale = ch7006_scale;
490 else
491 ch7006_err(client, "Invalid scale setting \"%d\".\n",
492 ch7006_scale);
493
494 return 0;
495}
496
497static struct i2c_device_id ch7006_ids[] = {
498 { "ch7006", 0 },
499 { }
500};
501MODULE_DEVICE_TABLE(i2c, ch7006_ids);
502
503static struct drm_i2c_encoder_driver ch7006_driver = {
504 .i2c_driver = {
505 .probe = ch7006_probe,
506 .remove = ch7006_remove,
507 .suspend = ch7006_suspend,
508 .resume = ch7006_resume,
509
510 .driver = {
511 .name = "ch7006",
512 },
513
514 .id_table = ch7006_ids,
515 },
516
517 .encoder_init = ch7006_encoder_init,
518};
519
520
521/* Module initialization */
522
523static int __init ch7006_init(void)
524{
525 return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
526}
527
528static void __exit ch7006_exit(void)
529{
530 drm_i2c_encoder_unregister(&ch7006_driver);
531}
532
533int ch7006_debug;
534module_param_named(debug, ch7006_debug, int, 0600);
535MODULE_PARM_DESC(debug, "Enable debug output.");
536
537char *ch7006_tv_norm;
538module_param_named(tv_norm, ch7006_tv_norm, charp, 0600);
539MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
540 "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, PAL-60, NTSC-M, NTSC-J.\n"
541 "\t\tDefault: PAL");
542
543int ch7006_scale = 1;
544module_param_named(scale, ch7006_scale, int, 0600);
545MODULE_PARM_DESC(scale, "Default scale.\n"
546 "\t\tSupported: 0 -> Select video modes with a higher blanking ratio.\n"
547 "\t\t\t1 -> Select default video modes.\n"
548 "\t\t\t2 -> Select video modes with a lower blanking ratio.");
549
550MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
551MODULE_DESCRIPTION("Chrontel ch7006 TV encoder driver");
552MODULE_LICENSE("GPL and additional rights");
553
554module_init(ch7006_init);
555module_exit(ch7006_exit);