2 * Copyright (C) 2009 Francisco Jerez.
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:
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.
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.
27 #include <linux/module.h>
29 #include "ch7006_priv.h"
31 /* DRM encoder functions */
33 static void ch7006_encoder_set_config(struct drm_encoder *encoder,
36 struct ch7006_priv *priv = to_ch7006_priv(encoder);
38 priv->params = *(struct ch7006_encoder_params *)params;
41 static void ch7006_encoder_destroy(struct drm_encoder *encoder)
43 struct ch7006_priv *priv = to_ch7006_priv(encoder);
45 drm_property_destroy(encoder->dev, priv->scale_property);
48 to_encoder_slave(encoder)->slave_priv = NULL;
50 drm_i2c_encoder_destroy(encoder);
53 static void ch7006_encoder_dpms(struct drm_encoder *encoder, int mode)
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;
59 ch7006_dbg(client, "\n");
61 if (mode == priv->last_dpms)
63 priv->last_dpms = mode;
65 ch7006_setup_power_state(encoder);
67 ch7006_load_reg(client, state, CH7006_POWER);
70 static void ch7006_encoder_save(struct drm_encoder *encoder)
72 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
73 struct ch7006_priv *priv = to_ch7006_priv(encoder);
75 ch7006_dbg(client, "\n");
77 ch7006_state_save(client, &priv->saved_state);
80 static void ch7006_encoder_restore(struct drm_encoder *encoder)
82 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
83 struct ch7006_priv *priv = to_ch7006_priv(encoder);
85 ch7006_dbg(client, "\n");
87 ch7006_state_load(client, &priv->saved_state);
90 static bool ch7006_encoder_mode_fixup(struct drm_encoder *encoder,
91 const struct drm_display_mode *mode,
92 struct drm_display_mode *adjusted_mode)
94 struct ch7006_priv *priv = to_ch7006_priv(encoder);
96 /* The ch7006 is painfully picky with the input timings so no
97 * custom modes for now... */
99 priv->mode = ch7006_lookup_mode(encoder, mode);
104 static int ch7006_encoder_mode_valid(struct drm_encoder *encoder,
105 struct drm_display_mode *mode)
107 if (ch7006_lookup_mode(encoder, mode))
113 static void ch7006_encoder_mode_set(struct drm_encoder *encoder,
114 struct drm_display_mode *drm_mode,
115 struct drm_display_mode *adjusted_mode)
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 struct ch7006_mode *mode = priv->mode;
123 struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
126 ch7006_dbg(client, "\n");
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);
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;
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);
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;
155 regs[CH7006_DETECT] = 0;
156 regs[CH7006_BCLKOUT] = 0;
158 regs[CH7006_SUBC_INC3] = 0;
159 if (params->pout_level)
160 regs[CH7006_SUBC_INC3] |= CH7006_SUBC_INC3_POUT_3_3V;
162 regs[CH7006_SUBC_INC4] = 0;
163 if (params->active_detect)
164 regs[CH7006_SUBC_INC4] |= CH7006_SUBC_INC4_DS_INPUT;
166 regs[CH7006_PLL_CONTROL] = priv->saved_state.regs[CH7006_PLL_CONTROL];
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);
174 ch7006_state_load(client, state);
177 static enum drm_connector_status ch7006_encoder_detect(struct drm_encoder *encoder,
178 struct drm_connector *connector)
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;
185 ch7006_dbg(client, "\n");
187 ch7006_save_reg(client, state, CH7006_DETECT);
188 ch7006_save_reg(client, state, CH7006_POWER);
189 ch7006_save_reg(client, state, CH7006_CLKMODE);
191 ch7006_write(client, CH7006_POWER, CH7006_POWER_RESET |
192 bitfs(CH7006_POWER_LEVEL, NORMAL));
193 ch7006_write(client, CH7006_CLKMODE, CH7006_CLKMODE_MASTER);
195 ch7006_write(client, CH7006_DETECT, CH7006_DETECT_SENSE);
197 ch7006_write(client, CH7006_DETECT, 0);
199 det = ch7006_read(client, CH7006_DETECT);
201 ch7006_load_reg(client, state, CH7006_CLKMODE);
202 ch7006_load_reg(client, state, CH7006_POWER);
203 ch7006_load_reg(client, state, CH7006_DETECT);
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;
215 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
217 drm_connector_property_set_value(connector,
218 encoder->dev->mode_config.tv_subconnector_property,
221 return priv->subconnector ? connector_status_connected :
222 connector_status_disconnected;
225 static int ch7006_encoder_get_modes(struct drm_encoder *encoder,
226 struct drm_connector *connector)
228 struct ch7006_priv *priv = to_ch7006_priv(encoder);
229 struct ch7006_mode *mode;
232 for (mode = ch7006_modes; mode->mode.clock; mode++) {
233 if (~mode->valid_scales & 1<<priv->scale ||
234 ~mode->valid_norms & 1<<priv->norm)
237 drm_mode_probed_add(connector,
238 drm_mode_duplicate(encoder->dev, &mode->mode));
246 static int ch7006_encoder_create_resources(struct drm_encoder *encoder,
247 struct drm_connector *connector)
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;
253 drm_mode_create_tv_properties(dev, NUM_TV_NORMS, ch7006_tv_norm_names);
255 priv->scale_property = drm_property_create_range(dev, 0, "scale", 0, 2);
257 drm_connector_attach_property(connector, conf->tv_select_subconnector_property,
258 priv->select_subconnector);
259 drm_connector_attach_property(connector, conf->tv_subconnector_property,
261 drm_connector_attach_property(connector, conf->tv_left_margin_property,
263 drm_connector_attach_property(connector, conf->tv_bottom_margin_property,
265 drm_connector_attach_property(connector, conf->tv_mode_property,
267 drm_connector_attach_property(connector, conf->tv_brightness_property,
269 drm_connector_attach_property(connector, conf->tv_contrast_property,
271 drm_connector_attach_property(connector, conf->tv_flicker_reduction_property,
273 drm_connector_attach_property(connector, priv->scale_property,
279 static int ch7006_encoder_set_property(struct drm_encoder *encoder,
280 struct drm_connector *connector,
281 struct drm_property *property,
284 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
285 struct ch7006_priv *priv = to_ch7006_priv(encoder);
286 struct ch7006_state *state = &priv->state;
287 struct drm_mode_config *conf = &encoder->dev->mode_config;
288 struct drm_crtc *crtc = encoder->crtc;
289 bool modes_changed = false;
291 ch7006_dbg(client, "\n");
293 if (property == conf->tv_select_subconnector_property) {
294 priv->select_subconnector = val;
296 ch7006_setup_power_state(encoder);
298 ch7006_load_reg(client, state, CH7006_POWER);
300 } else if (property == conf->tv_left_margin_property) {
303 ch7006_setup_properties(encoder);
305 ch7006_load_reg(client, state, CH7006_POV);
306 ch7006_load_reg(client, state, CH7006_HPOS);
308 } else if (property == conf->tv_bottom_margin_property) {
311 ch7006_setup_properties(encoder);
313 ch7006_load_reg(client, state, CH7006_POV);
314 ch7006_load_reg(client, state, CH7006_VPOS);
316 } else if (property == conf->tv_mode_property) {
317 if (connector->dpms != DRM_MODE_DPMS_OFF)
322 modes_changed = true;
324 } else if (property == conf->tv_brightness_property) {
325 priv->brightness = val;
327 ch7006_setup_levels(encoder);
329 ch7006_load_reg(client, state, CH7006_BLACK_LEVEL);
331 } else if (property == conf->tv_contrast_property) {
332 priv->contrast = val;
334 ch7006_setup_properties(encoder);
336 ch7006_load_reg(client, state, CH7006_CONTRAST);
338 } else if (property == conf->tv_flicker_reduction_property) {
341 ch7006_setup_properties(encoder);
343 ch7006_load_reg(client, state, CH7006_FFILTER);
345 } else if (property == priv->scale_property) {
346 if (connector->dpms != DRM_MODE_DPMS_OFF)
351 modes_changed = true;
358 drm_helper_probe_single_connector_modes(connector, 0, 0);
360 /* Disable the crtc to ensure a full modeset is
361 * performed whenever it's turned on again. */
363 struct drm_mode_set modeset = {
367 crtc->funcs->set_config(&modeset);
374 static struct drm_encoder_slave_funcs ch7006_encoder_funcs = {
375 .set_config = ch7006_encoder_set_config,
376 .destroy = ch7006_encoder_destroy,
377 .dpms = ch7006_encoder_dpms,
378 .save = ch7006_encoder_save,
379 .restore = ch7006_encoder_restore,
380 .mode_fixup = ch7006_encoder_mode_fixup,
381 .mode_valid = ch7006_encoder_mode_valid,
382 .mode_set = ch7006_encoder_mode_set,
383 .detect = ch7006_encoder_detect,
384 .get_modes = ch7006_encoder_get_modes,
385 .create_resources = ch7006_encoder_create_resources,
386 .set_property = ch7006_encoder_set_property,
390 /* I2C driver functions */
392 static int ch7006_probe(struct i2c_client *client, const struct i2c_device_id *id)
394 uint8_t addr = CH7006_VERSION_ID;
398 ch7006_dbg(client, "\n");
400 ret = i2c_master_send(client, &addr, sizeof(addr));
404 ret = i2c_master_recv(client, &val, sizeof(val));
408 ch7006_info(client, "Detected version ID: %x\n", val);
410 /* I don't know what this is for, but otherwise I get no
413 ch7006_write(client, 0x3d, 0x0);
418 ch7006_err(client, "Error %d reading version ID\n", ret);
423 static int ch7006_remove(struct i2c_client *client)
425 ch7006_dbg(client, "\n");
430 static int ch7006_suspend(struct i2c_client *client, pm_message_t mesg)
432 ch7006_dbg(client, "\n");
437 static int ch7006_resume(struct i2c_client *client)
439 ch7006_dbg(client, "\n");
441 ch7006_write(client, 0x3d, 0x0);
446 static int ch7006_encoder_init(struct i2c_client *client,
447 struct drm_device *dev,
448 struct drm_encoder_slave *encoder)
450 struct ch7006_priv *priv;
453 ch7006_dbg(client, "\n");
455 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
459 encoder->slave_priv = priv;
460 encoder->slave_funcs = &ch7006_encoder_funcs;
462 priv->norm = TV_NORM_PAL;
463 priv->select_subconnector = DRM_MODE_SUBCONNECTOR_Automatic;
464 priv->subconnector = DRM_MODE_SUBCONNECTOR_Unknown;
467 priv->brightness = 50;
471 priv->last_dpms = -1;
472 priv->chip_version = ch7006_read(client, CH7006_VERSION_ID);
474 if (ch7006_tv_norm) {
475 for (i = 0; i < NUM_TV_NORMS; i++) {
476 if (!strcmp(ch7006_tv_norm_names[i], ch7006_tv_norm)) {
482 if (i == NUM_TV_NORMS)
483 ch7006_err(client, "Invalid TV norm setting \"%s\".\n",
487 if (ch7006_scale >= 0 && ch7006_scale <= 2)
488 priv->scale = ch7006_scale;
490 ch7006_err(client, "Invalid scale setting \"%d\".\n",
496 static struct i2c_device_id ch7006_ids[] = {
500 MODULE_DEVICE_TABLE(i2c, ch7006_ids);
502 static struct drm_i2c_encoder_driver ch7006_driver = {
504 .probe = ch7006_probe,
505 .remove = ch7006_remove,
506 .suspend = ch7006_suspend,
507 .resume = ch7006_resume,
513 .id_table = ch7006_ids,
516 .encoder_init = ch7006_encoder_init,
520 /* Module initialization */
522 static int __init ch7006_init(void)
524 return drm_i2c_encoder_register(THIS_MODULE, &ch7006_driver);
527 static void __exit ch7006_exit(void)
529 drm_i2c_encoder_unregister(&ch7006_driver);
533 module_param_named(debug, ch7006_debug, int, 0600);
534 MODULE_PARM_DESC(debug, "Enable debug output.");
536 char *ch7006_tv_norm;
537 module_param_named(tv_norm, ch7006_tv_norm, charp, 0600);
538 MODULE_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"
542 int ch7006_scale = 1;
543 module_param_named(scale, ch7006_scale, int, 0600);
544 MODULE_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.");
549 MODULE_AUTHOR("Francisco Jerez <currojerez@riseup.net>");
550 MODULE_DESCRIPTION("Chrontel ch7006 TV encoder driver");
551 MODULE_LICENSE("GPL and additional rights");
553 module_init(ch7006_init);
554 module_exit(ch7006_exit);