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
29const char * const ch7006_tv_norm_names[] = {
30 [TV_NORM_PAL] = "PAL",
31 [TV_NORM_PAL_M] = "PAL-M",
32 [TV_NORM_PAL_N] = "PAL-N",
33 [TV_NORM_PAL_NC] = "PAL-Nc",
34 [TV_NORM_PAL_60] = "PAL-60",
35 [TV_NORM_NTSC_M] = "NTSC-M",
36 [TV_NORM_NTSC_J] = "NTSC-J",
37};
38
39#define NTSC_LIKE_TIMINGS .vrefresh = 60 * fixed1/1.001, \
40 .vdisplay = 480, \
41 .vtotal = 525, \
42 .hvirtual = 660
43
44#define PAL_LIKE_TIMINGS .vrefresh = 50 * fixed1, \
45 .vdisplay = 576, \
46 .vtotal = 625, \
47 .hvirtual = 810
48
49const struct ch7006_tv_norm_info ch7006_tv_norms[] = {
50 [TV_NORM_NTSC_M] = {
51 NTSC_LIKE_TIMINGS,
52 .black_level = 0.339 * fixed1,
53 .subc_freq = 3579545 * fixed1,
54 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, NTSC),
55 .voffset = 0,
56 },
57 [TV_NORM_NTSC_J] = {
58 NTSC_LIKE_TIMINGS,
59 .black_level = 0.286 * fixed1,
60 .subc_freq = 3579545 * fixed1,
61 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, NTSC_J),
62 .voffset = 0,
63 },
64 [TV_NORM_PAL] = {
65 PAL_LIKE_TIMINGS,
66 .black_level = 0.3 * fixed1,
67 .subc_freq = 4433618.75 * fixed1,
68 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, PAL),
69 .voffset = 0,
70 },
71 [TV_NORM_PAL_M] = {
72 NTSC_LIKE_TIMINGS,
73 .black_level = 0.339 * fixed1,
74 .subc_freq = 3575611.433 * fixed1,
75 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, PAL_M),
76 .voffset = 16,
77 },
78
79 /* The following modes seem to work right but they're
80 * undocumented */
81
82 [TV_NORM_PAL_N] = {
83 PAL_LIKE_TIMINGS,
84 .black_level = 0.339 * fixed1,
85 .subc_freq = 4433618.75 * fixed1,
86 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, PAL),
87 .voffset = 0,
88 },
89 [TV_NORM_PAL_NC] = {
90 PAL_LIKE_TIMINGS,
91 .black_level = 0.3 * fixed1,
92 .subc_freq = 3582056.25 * fixed1,
93 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, PAL),
94 .voffset = 0,
95 },
96 [TV_NORM_PAL_60] = {
97 NTSC_LIKE_TIMINGS,
98 .black_level = 0.3 * fixed1,
99 .subc_freq = 4433618.75 * fixed1,
100 .dispmode = bitfs(CH7006_DISPMODE_OUTPUT_STD, PAL_M),
101 .voffset = 16,
102 },
103};
104
105#define __MODE(f, hd, vd, ht, vt, hsynp, vsynp, \
106 subc, scale, scale_mask, norm_mask, e_hd, e_vd) { \
107 .mode = { \
108 .name = #hd "x" #vd, \
109 .status = 0, \
110 .type = DRM_MODE_TYPE_DRIVER, \
111 .clock = f, \
112 .hdisplay = hd, \
113 .hsync_start = e_hd + 16, \
114 .hsync_end = e_hd + 80, \
115 .htotal = ht, \
116 .hskew = 0, \
117 .vdisplay = vd, \
118 .vsync_start = vd + 10, \
119 .vsync_end = vd + 26, \
120 .vtotal = vt, \
121 .vscan = 0, \
122 .flags = DRM_MODE_FLAG_##hsynp##HSYNC | \
123 DRM_MODE_FLAG_##vsynp##VSYNC, \
124 }, \
125 .enc_hdisp = e_hd, \
126 .enc_vdisp = e_vd, \
127 .subc_coeff = subc * fixed1, \
128 .dispmode = bitfs(CH7006_DISPMODE_SCALING_RATIO, scale) | \
129 bitfs(CH7006_DISPMODE_INPUT_RES, e_hd##x##e_vd), \
130 .valid_scales = scale_mask, \
131 .valid_norms = norm_mask \
132 }
133
134#define MODE(f, hd, vd, ht, vt, hsynp, vsynp, \
135 subc, scale, scale_mask, norm_mask) \
136 __MODE(f, hd, vd, ht, vt, hsynp, vsynp, subc, scale, \
137 scale_mask, norm_mask, hd, vd)
138
139#define NTSC_LIKE (1 << TV_NORM_NTSC_M | 1 << TV_NORM_NTSC_J | \
140 1 << TV_NORM_PAL_M | 1 << TV_NORM_PAL_60)
141
142#define PAL_LIKE (1 << TV_NORM_PAL | 1 << TV_NORM_PAL_N | 1 << TV_NORM_PAL_NC)
143
144const struct ch7006_mode ch7006_modes[] = {
145 MODE(21000, 512, 384, 840, 500, N, N, 181.797557582, 5_4, 0x6, PAL_LIKE),
146 MODE(26250, 512, 384, 840, 625, N, N, 145.438046066, 1_1, 0x1, PAL_LIKE),
147 MODE(20140, 512, 384, 800, 420, N, N, 213.257083791, 5_4, 0x4, NTSC_LIKE),
148 MODE(24671, 512, 384, 784, 525, N, N, 174.0874153, 1_1, 0x3, NTSC_LIKE),
149 MODE(28125, 720, 400, 1125, 500, N, N, 135.742176298, 5_4, 0x6, PAL_LIKE),
150 MODE(34875, 720, 400, 1116, 625, N, N, 109.469496898, 1_1, 0x1, PAL_LIKE),
151 MODE(23790, 720, 400, 945, 420, N, N, 160.475642016, 5_4, 0x4, NTSC_LIKE),
152 MODE(29455, 720, 400, 936, 525, N, N, 129.614941843, 1_1, 0x3, NTSC_LIKE),
153 MODE(25000, 640, 400, 1000, 500, N, N, 152.709948279, 5_4, 0x6, PAL_LIKE),
154 MODE(31500, 640, 400, 1008, 625, N, N, 121.198371646, 1_1, 0x1, PAL_LIKE),
155 MODE(21147, 640, 400, 840, 420, N, N, 180.535097338, 5_4, 0x4, NTSC_LIKE),
156 MODE(26434, 640, 400, 840, 525, N, N, 144.42807787, 1_1, 0x2, NTSC_LIKE),
157 MODE(30210, 640, 400, 840, 600, N, N, 126.374568276, 7_8, 0x1, NTSC_LIKE),
158 MODE(21000, 640, 480, 840, 500, N, N, 181.797557582, 5_4, 0x4, PAL_LIKE),
159 MODE(26250, 640, 480, 840, 625, N, N, 145.438046066, 1_1, 0x2, PAL_LIKE),
160 MODE(31500, 640, 480, 840, 750, N, N, 121.198371646, 5_6, 0x1, PAL_LIKE),
161 MODE(24671, 640, 480, 784, 525, N, N, 174.0874153, 1_1, 0x4, NTSC_LIKE),
162 MODE(28196, 640, 480, 784, 600, N, N, 152.326488422, 7_8, 0x2, NTSC_LIKE),
163 MODE(30210, 640, 480, 800, 630, N, N, 142.171389101, 5_6, 0x1, NTSC_LIKE),
164 __MODE(29500, 720, 576, 944, 625, P, P, 145.592111636, 1_1, 0x7, PAL_LIKE, 800, 600),
165 MODE(36000, 800, 600, 960, 750, P, P, 119.304647022, 5_6, 0x6, PAL_LIKE),
166 MODE(39000, 800, 600, 936, 836, P, P, 110.127366499, 3_4, 0x1, PAL_LIKE),
167 MODE(39273, 800, 600, 1040, 630, P, P, 145.816809399, 5_6, 0x4, NTSC_LIKE),
168 MODE(43636, 800, 600, 1040, 700, P, P, 131.235128487, 3_4, 0x2, NTSC_LIKE),
169 MODE(47832, 800, 600, 1064, 750, P, P, 119.723275165, 7_10, 0x1, NTSC_LIKE),
170 {}
171};
172
173const struct ch7006_mode *ch7006_lookup_mode(struct drm_encoder *encoder,
174 const struct drm_display_mode *drm_mode)
175{
176 struct ch7006_priv *priv = to_ch7006_priv(encoder);
177 const struct ch7006_mode *mode;
178
179 for (mode = ch7006_modes; mode->mode.clock; mode++) {
180
181 if (~mode->valid_norms & 1<<priv->norm)
182 continue;
183
184 if (mode->mode.hdisplay != drm_mode->hdisplay ||
185 mode->mode.vdisplay != drm_mode->vdisplay ||
186 mode->mode.vtotal != drm_mode->vtotal ||
187 mode->mode.htotal != drm_mode->htotal ||
188 mode->mode.clock != drm_mode->clock)
189 continue;
190
191 return mode;
192 }
193
194 return NULL;
195}
196
197/* Some common HW state calculation code */
198
199void ch7006_setup_levels(struct drm_encoder *encoder)
200{
201 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
202 struct ch7006_priv *priv = to_ch7006_priv(encoder);
203 uint8_t *regs = priv->state.regs;
204 const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
205 int gain;
206 int black_level;
207
208 /* Set DAC_GAIN if the voltage drop between white and black is
209 * high enough. */
210 if (norm->black_level < 339*fixed1/1000) {
211 gain = 76;
212
213 regs[CH7006_INPUT_FORMAT] |= CH7006_INPUT_FORMAT_DAC_GAIN;
214 } else {
215 gain = 71;
216
217 regs[CH7006_INPUT_FORMAT] &= ~CH7006_INPUT_FORMAT_DAC_GAIN;
218 }
219
220 black_level = round_fixed(x: norm->black_level*26625)/gain;
221
222 /* Correct it with the specified brightness. */
223 black_level = interpolate(y0: 90, y1: black_level, y2: 208, x: priv->brightness);
224
225 regs[CH7006_BLACK_LEVEL] = bitf(CH7006_BLACK_LEVEL_0, black_level);
226
227 ch7006_dbg(client, "black level: %d\n", black_level);
228}
229
230void ch7006_setup_subcarrier(struct drm_encoder *encoder)
231{
232 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
233 struct ch7006_priv *priv = to_ch7006_priv(encoder);
234 struct ch7006_state *state = &priv->state;
235 const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
236 const struct ch7006_mode *mode = priv->mode;
237 uint32_t subc_inc;
238
239 subc_inc = round_fixed(x: (mode->subc_coeff >> 8)
240 * (norm->subc_freq >> 24));
241
242 setbitf(state, CH7006_SUBC_INC0, 28, subc_inc);
243 setbitf(state, CH7006_SUBC_INC1, 24, subc_inc);
244 setbitf(state, CH7006_SUBC_INC2, 20, subc_inc);
245 setbitf(state, CH7006_SUBC_INC3, 16, subc_inc);
246 setbitf(state, CH7006_SUBC_INC4, 12, subc_inc);
247 setbitf(state, CH7006_SUBC_INC5, 8, subc_inc);
248 setbitf(state, CH7006_SUBC_INC6, 4, subc_inc);
249 setbitf(state, CH7006_SUBC_INC7, 0, subc_inc);
250
251 ch7006_dbg(client, "subcarrier inc: %u\n", subc_inc);
252}
253
254void ch7006_setup_pll(struct drm_encoder *encoder)
255{
256 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
257 struct ch7006_priv *priv = to_ch7006_priv(encoder);
258 uint8_t *regs = priv->state.regs;
259 const struct ch7006_mode *mode = priv->mode;
260 int n, best_n = 0;
261 int m, best_m = 0;
262 int freq, best_freq = 0;
263
264 for (n = 0; n < CH7006_MAXN; n++) {
265 for (m = 0; m < CH7006_MAXM; m++) {
266 freq = CH7006_FREQ0*(n+2)/(m+2);
267
268 if (abs(freq - mode->mode.clock) <
269 abs(best_freq - mode->mode.clock)) {
270 best_freq = freq;
271 best_n = n;
272 best_m = m;
273 }
274 }
275 }
276
277 regs[CH7006_PLLOV] = bitf(CH7006_PLLOV_N_8, best_n) |
278 bitf(CH7006_PLLOV_M_8, best_m);
279
280 regs[CH7006_PLLM] = bitf(CH7006_PLLM_0, best_m);
281 regs[CH7006_PLLN] = bitf(CH7006_PLLN_0, best_n);
282
283 if (best_n < 108)
284 regs[CH7006_PLL_CONTROL] |= CH7006_PLL_CONTROL_CAPACITOR;
285 else
286 regs[CH7006_PLL_CONTROL] &= ~CH7006_PLL_CONTROL_CAPACITOR;
287
288 ch7006_dbg(client, "n=%d m=%d f=%d c=%d\n",
289 best_n, best_m, best_freq, best_n < 108);
290}
291
292void ch7006_setup_power_state(struct drm_encoder *encoder)
293{
294 struct ch7006_priv *priv = to_ch7006_priv(encoder);
295 uint8_t *power = &priv->state.regs[CH7006_POWER];
296 int subconnector;
297
298 subconnector = priv->select_subconnector ? priv->select_subconnector :
299 priv->subconnector;
300
301 *power = CH7006_POWER_RESET;
302
303 if (priv->last_dpms == DRM_MODE_DPMS_ON) {
304 switch (subconnector) {
305 case DRM_MODE_SUBCONNECTOR_SVIDEO:
306 *power |= bitfs(CH7006_POWER_LEVEL, CVBS_OFF);
307 break;
308 case DRM_MODE_SUBCONNECTOR_Composite:
309 *power |= bitfs(CH7006_POWER_LEVEL, SVIDEO_OFF);
310 break;
311 case DRM_MODE_SUBCONNECTOR_SCART:
312 *power |= bitfs(CH7006_POWER_LEVEL, NORMAL) |
313 CH7006_POWER_SCART;
314 break;
315 }
316
317 } else {
318 if (priv->chip_version >= 0x20)
319 *power |= bitfs(CH7006_POWER_LEVEL, FULL_POWER_OFF);
320 else
321 *power |= bitfs(CH7006_POWER_LEVEL, POWER_OFF);
322 }
323}
324
325void ch7006_setup_properties(struct drm_encoder *encoder)
326{
327 struct i2c_client *client = drm_i2c_encoder_get_client(encoder);
328 struct ch7006_priv *priv = to_ch7006_priv(encoder);
329 struct ch7006_state *state = &priv->state;
330 const struct ch7006_tv_norm_info *norm = &ch7006_tv_norms[priv->norm];
331 const struct ch7006_mode *ch_mode = priv->mode;
332 const struct drm_display_mode *mode = &ch_mode->mode;
333 uint8_t *regs = state->regs;
334 int flicker, contrast, hpos, vpos;
335 uint64_t scale, aspect;
336
337 flicker = interpolate(y0: 0, y1: 2, y2: 3, x: priv->flicker);
338 regs[CH7006_FFILTER] = bitf(CH7006_FFILTER_TEXT, flicker) |
339 bitf(CH7006_FFILTER_LUMA, flicker) |
340 bitf(CH7006_FFILTER_CHROMA, 1);
341
342 contrast = interpolate(y0: 0, y1: 5, y2: 7, x: priv->contrast);
343 regs[CH7006_CONTRAST] = bitf(CH7006_CONTRAST_0, contrast);
344
345 scale = norm->vtotal*fixed1;
346 do_div(scale, mode->vtotal);
347
348 aspect = ch_mode->enc_hdisp*fixed1;
349 do_div(aspect, ch_mode->enc_vdisp);
350
351 hpos = round_fixed(x: (norm->hvirtual * aspect - mode->hdisplay * scale)
352 * priv->hmargin * mode->vtotal) / norm->vtotal / 100 / 4;
353
354 setbitf(state, CH7006_POV, HPOS_8, hpos);
355 setbitf(state, CH7006_HPOS, 0, hpos);
356
357 vpos = max(0, norm->vdisplay - round_fixed(mode->vdisplay*scale)
358 + norm->voffset) * priv->vmargin / 100 / 2;
359
360 setbitf(state, CH7006_POV, VPOS_8, vpos);
361 setbitf(state, CH7006_VPOS, 0, vpos);
362
363 ch7006_dbg(client, "hpos: %d, vpos: %d\n", hpos, vpos);
364}
365
366/* HW access functions */
367
368void ch7006_write(struct i2c_client *client, uint8_t addr, uint8_t val)
369{
370 uint8_t buf[] = {addr, val};
371 int ret;
372
373 ret = i2c_master_send(client, buf, ARRAY_SIZE(buf));
374 if (ret < 0)
375 ch7006_err(client, "Error %d writing to subaddress 0x%x\n",
376 ret, addr);
377}
378
379uint8_t ch7006_read(struct i2c_client *client, uint8_t addr)
380{
381 uint8_t val;
382 int ret;
383
384 ret = i2c_master_send(client, buf: &addr, count: sizeof(addr));
385 if (ret < 0)
386 goto fail;
387
388 ret = i2c_master_recv(client, buf: &val, count: sizeof(val));
389 if (ret < 0)
390 goto fail;
391
392 return val;
393
394fail:
395 ch7006_err(client, "Error %d reading from subaddress 0x%x\n",
396 ret, addr);
397 return 0;
398}
399
400void ch7006_state_load(struct i2c_client *client,
401 struct ch7006_state *state)
402{
403 ch7006_load_reg(client, state, CH7006_POWER);
404
405 ch7006_load_reg(client, state, CH7006_DISPMODE);
406 ch7006_load_reg(client, state, CH7006_FFILTER);
407 ch7006_load_reg(client, state, CH7006_BWIDTH);
408 ch7006_load_reg(client, state, CH7006_INPUT_FORMAT);
409 ch7006_load_reg(client, state, CH7006_CLKMODE);
410 ch7006_load_reg(client, state, CH7006_START_ACTIVE);
411 ch7006_load_reg(client, state, CH7006_POV);
412 ch7006_load_reg(client, state, CH7006_BLACK_LEVEL);
413 ch7006_load_reg(client, state, CH7006_HPOS);
414 ch7006_load_reg(client, state, CH7006_VPOS);
415 ch7006_load_reg(client, state, CH7006_INPUT_SYNC);
416 ch7006_load_reg(client, state, CH7006_DETECT);
417 ch7006_load_reg(client, state, CH7006_CONTRAST);
418 ch7006_load_reg(client, state, CH7006_PLLOV);
419 ch7006_load_reg(client, state, CH7006_PLLM);
420 ch7006_load_reg(client, state, CH7006_PLLN);
421 ch7006_load_reg(client, state, CH7006_BCLKOUT);
422 ch7006_load_reg(client, state, CH7006_SUBC_INC0);
423 ch7006_load_reg(client, state, CH7006_SUBC_INC1);
424 ch7006_load_reg(client, state, CH7006_SUBC_INC2);
425 ch7006_load_reg(client, state, CH7006_SUBC_INC3);
426 ch7006_load_reg(client, state, CH7006_SUBC_INC4);
427 ch7006_load_reg(client, state, CH7006_SUBC_INC5);
428 ch7006_load_reg(client, state, CH7006_SUBC_INC6);
429 ch7006_load_reg(client, state, CH7006_SUBC_INC7);
430 ch7006_load_reg(client, state, CH7006_PLL_CONTROL);
431 ch7006_load_reg(client, state, CH7006_CALC_SUBC_INC0);
432}
433
434void ch7006_state_save(struct i2c_client *client,
435 struct ch7006_state *state)
436{
437 ch7006_save_reg(client, state, CH7006_POWER);
438
439 ch7006_save_reg(client, state, CH7006_DISPMODE);
440 ch7006_save_reg(client, state, CH7006_FFILTER);
441 ch7006_save_reg(client, state, CH7006_BWIDTH);
442 ch7006_save_reg(client, state, CH7006_INPUT_FORMAT);
443 ch7006_save_reg(client, state, CH7006_CLKMODE);
444 ch7006_save_reg(client, state, CH7006_START_ACTIVE);
445 ch7006_save_reg(client, state, CH7006_POV);
446 ch7006_save_reg(client, state, CH7006_BLACK_LEVEL);
447 ch7006_save_reg(client, state, CH7006_HPOS);
448 ch7006_save_reg(client, state, CH7006_VPOS);
449 ch7006_save_reg(client, state, CH7006_INPUT_SYNC);
450 ch7006_save_reg(client, state, CH7006_DETECT);
451 ch7006_save_reg(client, state, CH7006_CONTRAST);
452 ch7006_save_reg(client, state, CH7006_PLLOV);
453 ch7006_save_reg(client, state, CH7006_PLLM);
454 ch7006_save_reg(client, state, CH7006_PLLN);
455 ch7006_save_reg(client, state, CH7006_BCLKOUT);
456 ch7006_save_reg(client, state, CH7006_SUBC_INC0);
457 ch7006_save_reg(client, state, CH7006_SUBC_INC1);
458 ch7006_save_reg(client, state, CH7006_SUBC_INC2);
459 ch7006_save_reg(client, state, CH7006_SUBC_INC3);
460 ch7006_save_reg(client, state, CH7006_SUBC_INC4);
461 ch7006_save_reg(client, state, CH7006_SUBC_INC5);
462 ch7006_save_reg(client, state, CH7006_SUBC_INC6);
463 ch7006_save_reg(client, state, CH7006_SUBC_INC7);
464 ch7006_save_reg(client, state, CH7006_PLL_CONTROL);
465 ch7006_save_reg(client, state, CH7006_CALC_SUBC_INC0);
466
467 state->regs[CH7006_FFILTER] = (state->regs[CH7006_FFILTER] & 0xf0) |
468 (state->regs[CH7006_FFILTER] & 0x0c) >> 2 |
469 (state->regs[CH7006_FFILTER] & 0x03) << 2;
470}
471

source code of linux/drivers/gpu/drm/i2c/ch7006_mode.c