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Diffstat (limited to 'drivers/gpu/drm/i2c/ch7006_drv.c')
-rw-r--r--drivers/gpu/drm/i2c/ch7006_drv.c531
1 files changed, 531 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i2c/ch7006_drv.c b/drivers/gpu/drm/i2c/ch7006_drv.c
new file mode 100644
index 000000000000..9422a74c8b54
--- /dev/null
+++ b/drivers/gpu/drm/i2c/ch7006_drv.c
@@ -0,0 +1,531 @@
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 = 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 return 0;
412
413fail:
414 ch7006_err(client, "Error %d reading version ID\n", ret);
415
416 return -ENODEV;
417}
418
419static int ch7006_remove(struct i2c_client *client)
420{
421 ch7006_dbg(client, "\n");
422
423 return 0;
424}
425
426static int ch7006_encoder_init(struct i2c_client *client,
427 struct drm_device *dev,
428 struct drm_encoder_slave *encoder)
429{
430 struct ch7006_priv *priv;
431 int i;
432
433 ch7006_dbg(client, "\n");
434
435 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
436 if (!priv)
437 return -ENOMEM;
438
439 encoder->slave_priv = priv;
440 encoder->slave_funcs = &ch7006_encoder_funcs;
441
442 priv->norm = TV_NORM_PAL;
443 priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
444 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
445 priv->scale = 1;
446 priv->contrast = 50;
447 priv->brightness = 50;
448 priv->flicker = 50;
449 priv->hmargin = 50;
450 priv->vmargin = 50;
451 priv->last_dpms = -1;
452
453 if (ch7006_tv_norm) {
454 for (i = 0; i < NUM_TV_NORMS; i++) {
455 if (!strcmp(ch7006_tv_norm_names[i], ch7006_tv_norm)) {
456 priv->norm = i;
457 break;
458 }
459 }
460
461 if (i == NUM_TV_NORMS)
462 ch7006_err(client, "Invalid TV norm setting \"%s\".\n",
463 ch7006_tv_norm);
464 }
465
466 if (ch7006_scale >= 0 && ch7006_scale <= 2)
467 priv->scale = ch7006_scale;
468 else
469 ch7006_err(client, "Invalid scale setting \"%d\".\n",
470 ch7006_scale);
471
472 return 0;
473}
474
475static struct i2c_device_id ch7006_ids[] = {
476 { "ch7006", 0 },
477 { }
478};
479MODULE_DEVICE_TABLE(i2c, ch7006_ids);
480
481static struct drm_i2c_encoder_driver ch7006_driver = {
482 .i2c_driver = {
483 .probe = ch7006_probe,
484 .remove = ch7006_remove,
485
486 .driver = {
487 .name = "ch7006",
488 },
489
490 .id_table = ch7006_ids,
491 },
492
493 .encoder_init = ch7006_encoder_init,
494};
495
496
497/* Module initialization */
498
499static int __init ch7006_init(void)
500{
501 return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
502}
503
504static void __exit ch7006_exit(void)
505{
506 drm_i2c_encoder_unregister(&ch7006_driver);
507}
508
509int ch7006_debug;
510module_param_named(debug, ch7006_debug, int, 0600);
511MODULE_PARM_DESC(debug, "Enable debug output.");
512
513char *ch7006_tv_norm;
514module_param_named(tv_norm, ch7006_tv_norm, charp, 0600);
515MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
516 "\t\tSupported: PAL, PAL-M, PAL-N, PAL-Nc, PAL-60, NTSC-M, NTSC-J.\n"
517 "\t\tDefault: PAL");
518
519int ch7006_scale = 1;
520module_param_named(scale, ch7006_scale, int, 0600);
521MODULE_PARM_DESC(scale, "Default scale.\n"
522 "\t\tSupported: 0 -> Select video modes with a higher blanking ratio.\n"
523 "\t\t\t1 -> Select default video modes.\n"
524 "\t\t\t2 -> Select video modes with a lower blanking ratio.");
525
526MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
527MODULE_DESCRIPTION("Chrontel ch7006 TV encoder driver");
528MODULE_LICENSE("GPL and additional rights");
529
530module_init(ch7006_init);
531module_exit(ch7006_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-24 05:54:13 -0500