1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2016 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
5 * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
6 */
7
8 #include <linux/export.h>
9
10 #include <drm/drm_print.h>
11
12 #include "meson_drv.h"
13 #include "meson_vclk.h"
14
15 /**
16 * DOC: Video Clocks
17 *
18 * VCLK is the "Pixel Clock" frequency generator from a dedicated PLL.
19 * We handle the following encodings :
20 *
21 * - CVBS 27MHz generator via the VCLK2 to the VENCI and VDAC blocks
22 * - HDMI Pixel Clocks generation
23 *
24 * What is missing :
25 *
26 * - Genenate Pixel clocks for 2K/4K 10bit formats
27 *
28 * Clock generator scheme :
29 *
30 * .. code::
31 *
32 * __________ _________ _____
33 * | | | | | |--ENCI
34 * | HDMI PLL |-| PLL_DIV |--- VCLK--| |--ENCL
35 * |__________| |_________| \ | MUX |--ENCP
36 * --VCLK2-| |--VDAC
37 * |_____|--HDMI-TX
38 *
39 * Final clocks can take input for either VCLK or VCLK2, but
40 * VCLK is the preferred path for HDMI clocking and VCLK2 is the
41 * preferred path for CVBS VDAC clocking.
42 *
43 * VCLK and VCLK2 have fixed divided clocks paths for /1, /2, /4, /6 or /12.
44 *
45 * The PLL_DIV can achieve an additional fractional dividing like
46 * 1.5, 3.5, 3.75... to generate special 2K and 4K 10bit clocks.
47 */
48
49 /* HHI Registers */
50 #define HHI_VID_PLL_CLK_DIV 0x1a0 /* 0x68 offset in data sheet */
51 #define VID_PLL_EN BIT(19)
52 #define VID_PLL_BYPASS BIT(18)
53 #define VID_PLL_PRESET BIT(15)
54 #define HHI_VIID_CLK_DIV 0x128 /* 0x4a offset in data sheet */
55 #define VCLK2_DIV_MASK 0xff
56 #define VCLK2_DIV_EN BIT(16)
57 #define VCLK2_DIV_RESET BIT(17)
58 #define CTS_VDAC_SEL_MASK (0xf << 28)
59 #define CTS_VDAC_SEL_SHIFT 28
60 #define HHI_VIID_CLK_CNTL 0x12c /* 0x4b offset in data sheet */
61 #define VCLK2_EN BIT(19)
62 #define VCLK2_SEL_MASK (0x7 << 16)
63 #define VCLK2_SEL_SHIFT 16
64 #define VCLK2_SOFT_RESET BIT(15)
65 #define VCLK2_DIV1_EN BIT(0)
66 #define HHI_VID_CLK_DIV 0x164 /* 0x59 offset in data sheet */
67 #define VCLK_DIV_MASK 0xff
68 #define VCLK_DIV_EN BIT(16)
69 #define VCLK_DIV_RESET BIT(17)
70 #define CTS_ENCP_SEL_MASK (0xf << 24)
71 #define CTS_ENCP_SEL_SHIFT 24
72 #define CTS_ENCI_SEL_MASK (0xf << 28)
73 #define CTS_ENCI_SEL_SHIFT 28
74 #define HHI_VID_CLK_CNTL 0x17c /* 0x5f offset in data sheet */
75 #define VCLK_EN BIT(19)
76 #define VCLK_SEL_MASK (0x7 << 16)
77 #define VCLK_SEL_SHIFT 16
78 #define VCLK_SOFT_RESET BIT(15)
79 #define VCLK_DIV1_EN BIT(0)
80 #define VCLK_DIV2_EN BIT(1)
81 #define VCLK_DIV4_EN BIT(2)
82 #define VCLK_DIV6_EN BIT(3)
83 #define VCLK_DIV12_EN BIT(4)
84 #define HHI_VID_CLK_CNTL2 0x194 /* 0x65 offset in data sheet */
85 #define CTS_ENCI_EN BIT(0)
86 #define CTS_ENCP_EN BIT(2)
87 #define CTS_VDAC_EN BIT(4)
88 #define HDMI_TX_PIXEL_EN BIT(5)
89 #define HHI_HDMI_CLK_CNTL 0x1cc /* 0x73 offset in data sheet */
90 #define HDMI_TX_PIXEL_SEL_MASK (0xf << 16)
91 #define HDMI_TX_PIXEL_SEL_SHIFT 16
92 #define CTS_HDMI_SYS_SEL_MASK (0x7 << 9)
93 #define CTS_HDMI_SYS_DIV_MASK (0x7f)
94 #define CTS_HDMI_SYS_EN BIT(8)
95
96 #define HHI_VDAC_CNTL0 0x2F4 /* 0xbd offset in data sheet */
97 #define HHI_VDAC_CNTL1 0x2F8 /* 0xbe offset in data sheet */
98
99 #define HHI_HDMI_PLL_CNTL 0x320 /* 0xc8 offset in data sheet */
100 #define HHI_HDMI_PLL_CNTL_EN BIT(30)
101 #define HHI_HDMI_PLL_CNTL2 0x324 /* 0xc9 offset in data sheet */
102 #define HHI_HDMI_PLL_CNTL3 0x328 /* 0xca offset in data sheet */
103 #define HHI_HDMI_PLL_CNTL4 0x32C /* 0xcb offset in data sheet */
104 #define HHI_HDMI_PLL_CNTL5 0x330 /* 0xcc offset in data sheet */
105 #define HHI_HDMI_PLL_CNTL6 0x334 /* 0xcd offset in data sheet */
106 #define HHI_HDMI_PLL_CNTL7 0x338 /* 0xce offset in data sheet */
107
108 #define HDMI_PLL_RESET BIT(28)
109 #define HDMI_PLL_RESET_G12A BIT(29)
110 #define HDMI_PLL_LOCK BIT(31)
111 #define HDMI_PLL_LOCK_G12A (3 << 30)
112
113 #define FREQ_1000_1001(_freq) DIV_ROUND_CLOSEST(_freq * 1000, 1001)
114
115 /* VID PLL Dividers */
116 enum {
117 VID_PLL_DIV_1 = 0,
118 VID_PLL_DIV_2,
119 VID_PLL_DIV_2p5,
120 VID_PLL_DIV_3,
121 VID_PLL_DIV_3p5,
122 VID_PLL_DIV_3p75,
123 VID_PLL_DIV_4,
124 VID_PLL_DIV_5,
125 VID_PLL_DIV_6,
126 VID_PLL_DIV_6p25,
127 VID_PLL_DIV_7,
128 VID_PLL_DIV_7p5,
129 VID_PLL_DIV_12,
130 VID_PLL_DIV_14,
131 VID_PLL_DIV_15,
132 };
133
meson_vid_pll_set(struct meson_drm * priv,unsigned int div)134 static void meson_vid_pll_set(struct meson_drm *priv, unsigned int div)
135 {
136 unsigned int shift_val = 0;
137 unsigned int shift_sel = 0;
138
139 /* Disable vid_pll output clock */
140 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_EN, 0);
141 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV, VID_PLL_PRESET, 0);
142
143 switch (div) {
144 case VID_PLL_DIV_2:
145 shift_val = 0x0aaa;
146 shift_sel = 0;
147 break;
148 case VID_PLL_DIV_2p5:
149 shift_val = 0x5294;
150 shift_sel = 2;
151 break;
152 case VID_PLL_DIV_3:
153 shift_val = 0x0db6;
154 shift_sel = 0;
155 break;
156 case VID_PLL_DIV_3p5:
157 shift_val = 0x36cc;
158 shift_sel = 1;
159 break;
160 case VID_PLL_DIV_3p75:
161 shift_val = 0x6666;
162 shift_sel = 2;
163 break;
164 case VID_PLL_DIV_4:
165 shift_val = 0x0ccc;
166 shift_sel = 0;
167 break;
168 case VID_PLL_DIV_5:
169 shift_val = 0x739c;
170 shift_sel = 2;
171 break;
172 case VID_PLL_DIV_6:
173 shift_val = 0x0e38;
174 shift_sel = 0;
175 break;
176 case VID_PLL_DIV_6p25:
177 shift_val = 0x0000;
178 shift_sel = 3;
179 break;
180 case VID_PLL_DIV_7:
181 shift_val = 0x3c78;
182 shift_sel = 1;
183 break;
184 case VID_PLL_DIV_7p5:
185 shift_val = 0x78f0;
186 shift_sel = 2;
187 break;
188 case VID_PLL_DIV_12:
189 shift_val = 0x0fc0;
190 shift_sel = 0;
191 break;
192 case VID_PLL_DIV_14:
193 shift_val = 0x3f80;
194 shift_sel = 1;
195 break;
196 case VID_PLL_DIV_15:
197 shift_val = 0x7f80;
198 shift_sel = 2;
199 break;
200 }
201
202 if (div == VID_PLL_DIV_1)
203 /* Enable vid_pll bypass to HDMI pll */
204 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
205 VID_PLL_BYPASS, VID_PLL_BYPASS);
206 else {
207 /* Disable Bypass */
208 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
209 VID_PLL_BYPASS, 0);
210 /* Clear sel */
211 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
212 3 << 16, 0);
213 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
214 VID_PLL_PRESET, 0);
215 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
216 0x7fff, 0);
217
218 /* Setup sel and val */
219 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
220 3 << 16, shift_sel << 16);
221 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
222 VID_PLL_PRESET, VID_PLL_PRESET);
223 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
224 0x7fff, shift_val);
225
226 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
227 VID_PLL_PRESET, 0);
228 }
229
230 /* Enable the vid_pll output clock */
231 regmap_update_bits(priv->hhi, HHI_VID_PLL_CLK_DIV,
232 VID_PLL_EN, VID_PLL_EN);
233 }
234
235 /*
236 * Setup VCLK2 for 27MHz, and enable clocks for ENCI and VDAC
237 *
238 * TOFIX: Refactor into table to also handle HDMI frequency and paths
239 */
meson_venci_cvbs_clock_config(struct meson_drm * priv)240 static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
241 {
242 unsigned int val;
243
244 /* Setup PLL to output 1.485GHz */
245 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
246 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800023d);
247 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00404e00);
248 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091);
249 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c);
250 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980);
251 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55);
252 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4800023d);
253
254 /* Poll for lock bit */
255 regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
256 (val & HDMI_PLL_LOCK), 10, 0);
257 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
258 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
259 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4000027b);
260 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb300);
261 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0xa6212844);
262 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c4d000c);
263 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729);
264 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500);
265
266 /* Reset PLL */
267 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
268 HDMI_PLL_RESET, HDMI_PLL_RESET);
269 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
270 HDMI_PLL_RESET, 0);
271
272 /* Poll for lock bit */
273 regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
274 (val & HDMI_PLL_LOCK), 10, 0);
275 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
276 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x1a0504f7);
277 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00010000);
278 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x00000000);
279 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x6a28dc00);
280 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x65771290);
281 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x39272000);
282 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL7, 0x56540000);
283 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x3a0504f7);
284 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x1a0504f7);
285
286 /* Poll for lock bit */
287 regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
288 ((val & HDMI_PLL_LOCK_G12A) == HDMI_PLL_LOCK_G12A),
289 10, 0);
290 }
291
292 /* Disable VCLK2 */
293 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, 0);
294
295 /* Setup vid_pll to /1 */
296 meson_vid_pll_set(priv, VID_PLL_DIV_1);
297
298 /* Setup the VCLK2 divider value to achieve 27MHz */
299 regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
300 VCLK2_DIV_MASK, (55 - 1));
301
302 /* select vid_pll for vclk2 */
303 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
304 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
305 VCLK2_SEL_MASK, (0 << VCLK2_SEL_SHIFT));
306 else
307 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
308 VCLK2_SEL_MASK, (4 << VCLK2_SEL_SHIFT));
309
310 /* enable vclk2 gate */
311 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL, VCLK2_EN, VCLK2_EN);
312
313 /* select vclk_div1 for enci */
314 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
315 CTS_ENCI_SEL_MASK, (8 << CTS_ENCI_SEL_SHIFT));
316 /* select vclk_div1 for vdac */
317 regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
318 CTS_VDAC_SEL_MASK, (8 << CTS_VDAC_SEL_SHIFT));
319
320 /* release vclk2_div_reset and enable vclk2_div */
321 regmap_update_bits(priv->hhi, HHI_VIID_CLK_DIV,
322 VCLK2_DIV_EN | VCLK2_DIV_RESET, VCLK2_DIV_EN);
323
324 /* enable vclk2_div1 gate */
325 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
326 VCLK2_DIV1_EN, VCLK2_DIV1_EN);
327
328 /* reset vclk2 */
329 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
330 VCLK2_SOFT_RESET, VCLK2_SOFT_RESET);
331 regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
332 VCLK2_SOFT_RESET, 0);
333
334 /* enable enci_clk */
335 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
336 CTS_ENCI_EN, CTS_ENCI_EN);
337 /* enable vdac_clk */
338 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
339 CTS_VDAC_EN, CTS_VDAC_EN);
340 }
341
342 enum {
343 /* PLL O1 O2 O3 VP DV EN TX */
344 /* 4320 /4 /4 /1 /5 /1 => /2 /2 */
345 MESON_VCLK_HDMI_ENCI_54000 = 0,
346 /* 4320 /4 /4 /1 /5 /1 => /1 /2 */
347 MESON_VCLK_HDMI_DDR_54000,
348 /* 2970 /4 /1 /1 /5 /1 => /1 /2 */
349 MESON_VCLK_HDMI_DDR_148500,
350 /* 2970 /2 /2 /2 /5 /1 => /1 /1 */
351 MESON_VCLK_HDMI_74250,
352 /* 2970 /1 /2 /2 /5 /1 => /1 /1 */
353 MESON_VCLK_HDMI_148500,
354 /* 2970 /1 /1 /1 /5 /2 => /1 /1 */
355 MESON_VCLK_HDMI_297000,
356 /* 5940 /1 /1 /2 /5 /1 => /1 /1 */
357 MESON_VCLK_HDMI_594000,
358 /* 2970 /1 /1 /1 /5 /1 => /1 /2 */
359 MESON_VCLK_HDMI_594000_YUV420,
360 };
361
362 struct meson_vclk_params {
363 unsigned int pll_freq;
364 unsigned int phy_freq;
365 unsigned int vclk_freq;
366 unsigned int venc_freq;
367 unsigned int pixel_freq;
368 unsigned int pll_od1;
369 unsigned int pll_od2;
370 unsigned int pll_od3;
371 unsigned int vid_pll_div;
372 unsigned int vclk_div;
373 } params[] = {
374 [MESON_VCLK_HDMI_ENCI_54000] = {
375 .pll_freq = 4320000,
376 .phy_freq = 270000,
377 .vclk_freq = 54000,
378 .venc_freq = 54000,
379 .pixel_freq = 54000,
380 .pll_od1 = 4,
381 .pll_od2 = 4,
382 .pll_od3 = 1,
383 .vid_pll_div = VID_PLL_DIV_5,
384 .vclk_div = 1,
385 },
386 [MESON_VCLK_HDMI_DDR_54000] = {
387 .pll_freq = 4320000,
388 .phy_freq = 270000,
389 .vclk_freq = 54000,
390 .venc_freq = 54000,
391 .pixel_freq = 27000,
392 .pll_od1 = 4,
393 .pll_od2 = 4,
394 .pll_od3 = 1,
395 .vid_pll_div = VID_PLL_DIV_5,
396 .vclk_div = 1,
397 },
398 [MESON_VCLK_HDMI_DDR_148500] = {
399 .pll_freq = 2970000,
400 .phy_freq = 742500,
401 .vclk_freq = 148500,
402 .venc_freq = 148500,
403 .pixel_freq = 74250,
404 .pll_od1 = 4,
405 .pll_od2 = 1,
406 .pll_od3 = 1,
407 .vid_pll_div = VID_PLL_DIV_5,
408 .vclk_div = 1,
409 },
410 [MESON_VCLK_HDMI_74250] = {
411 .pll_freq = 2970000,
412 .phy_freq = 742500,
413 .vclk_freq = 74250,
414 .venc_freq = 74250,
415 .pixel_freq = 74250,
416 .pll_od1 = 2,
417 .pll_od2 = 2,
418 .pll_od3 = 2,
419 .vid_pll_div = VID_PLL_DIV_5,
420 .vclk_div = 1,
421 },
422 [MESON_VCLK_HDMI_148500] = {
423 .pll_freq = 2970000,
424 .phy_freq = 1485000,
425 .vclk_freq = 148500,
426 .venc_freq = 148500,
427 .pixel_freq = 148500,
428 .pll_od1 = 1,
429 .pll_od2 = 2,
430 .pll_od3 = 2,
431 .vid_pll_div = VID_PLL_DIV_5,
432 .vclk_div = 1,
433 },
434 [MESON_VCLK_HDMI_297000] = {
435 .pll_freq = 5940000,
436 .phy_freq = 2970000,
437 .venc_freq = 297000,
438 .vclk_freq = 297000,
439 .pixel_freq = 297000,
440 .pll_od1 = 2,
441 .pll_od2 = 1,
442 .pll_od3 = 1,
443 .vid_pll_div = VID_PLL_DIV_5,
444 .vclk_div = 2,
445 },
446 [MESON_VCLK_HDMI_594000] = {
447 .pll_freq = 5940000,
448 .phy_freq = 5940000,
449 .venc_freq = 594000,
450 .vclk_freq = 594000,
451 .pixel_freq = 594000,
452 .pll_od1 = 1,
453 .pll_od2 = 1,
454 .pll_od3 = 2,
455 .vid_pll_div = VID_PLL_DIV_5,
456 .vclk_div = 1,
457 },
458 [MESON_VCLK_HDMI_594000_YUV420] = {
459 .pll_freq = 5940000,
460 .phy_freq = 2970000,
461 .venc_freq = 594000,
462 .vclk_freq = 594000,
463 .pixel_freq = 297000,
464 .pll_od1 = 2,
465 .pll_od2 = 1,
466 .pll_od3 = 1,
467 .vid_pll_div = VID_PLL_DIV_5,
468 .vclk_div = 1,
469 },
470 { /* sentinel */ },
471 };
472
pll_od_to_reg(unsigned int od)473 static inline unsigned int pll_od_to_reg(unsigned int od)
474 {
475 switch (od) {
476 case 1:
477 return 0;
478 case 2:
479 return 1;
480 case 4:
481 return 2;
482 case 8:
483 return 3;
484 }
485
486 /* Invalid */
487 return 0;
488 }
489
meson_hdmi_pll_set_params(struct meson_drm * priv,unsigned int m,unsigned int frac,unsigned int od1,unsigned int od2,unsigned int od3)490 static void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
491 unsigned int frac, unsigned int od1,
492 unsigned int od2, unsigned int od3)
493 {
494 unsigned int val;
495
496 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
497 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x58000200 | m);
498 if (frac)
499 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2,
500 0x00004000 | frac);
501 else
502 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2,
503 0x00000000);
504 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091);
505 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x801da72c);
506 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x71486980);
507 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x00000e55);
508
509 /* Enable and unreset */
510 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
511 0x7 << 28, HHI_HDMI_PLL_CNTL_EN);
512
513 /* Poll for lock bit */
514 regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL,
515 val, (val & HDMI_PLL_LOCK), 10, 0);
516 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
517 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
518 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x40000200 | m);
519 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb000 | frac);
520 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4);
521 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0c8e0000);
522 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x001fa729);
523 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x01a31500);
524
525 /* Reset PLL */
526 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
527 HDMI_PLL_RESET, HDMI_PLL_RESET);
528 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
529 HDMI_PLL_RESET, 0);
530
531 /* Poll for lock bit */
532 regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
533 (val & HDMI_PLL_LOCK), 10, 0);
534 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
535 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x0b3a0400 | m);
536
537 /* Enable and reset */
538 /* TODO: add specific macro for g12a here */
539 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
540 0x3 << 28, 0x3 << 28);
541
542 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, frac);
543 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x00000000);
544
545 /* G12A HDMI PLL Needs specific parameters for 5.4GHz */
546 if (m >= 0xf7) {
547 if (frac < 0x10000) {
548 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4,
549 0x6a685c00);
550 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5,
551 0x11551293);
552 } else {
553 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4,
554 0xea68dc00);
555 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5,
556 0x65771290);
557 }
558 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x39272000);
559 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL7, 0x55540000);
560 } else {
561 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL4, 0x0a691c00);
562 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL5, 0x33771290);
563 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL6, 0x39270000);
564 regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL7, 0x50540000);
565 }
566
567 do {
568 /* Reset PLL */
569 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
570 HDMI_PLL_RESET_G12A, HDMI_PLL_RESET_G12A);
571
572 /* UN-Reset PLL */
573 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
574 HDMI_PLL_RESET_G12A, 0);
575
576 /* Poll for lock bits */
577 if (!regmap_read_poll_timeout(priv->hhi,
578 HHI_HDMI_PLL_CNTL, val,
579 ((val & HDMI_PLL_LOCK_G12A)
580 == HDMI_PLL_LOCK_G12A),
581 10, 100))
582 break;
583 } while(1);
584 }
585
586 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
587 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
588 3 << 16, pll_od_to_reg(od1) << 16);
589 else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
590 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
591 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
592 3 << 21, pll_od_to_reg(od1) << 21);
593 else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
594 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
595 3 << 16, pll_od_to_reg(od1) << 16);
596
597 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
598 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
599 3 << 22, pll_od_to_reg(od2) << 22);
600 else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
601 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
602 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
603 3 << 23, pll_od_to_reg(od2) << 23);
604 else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
605 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
606 3 << 18, pll_od_to_reg(od2) << 18);
607
608 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
609 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
610 3 << 18, pll_od_to_reg(od3) << 18);
611 else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
612 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
613 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
614 3 << 19, pll_od_to_reg(od3) << 19);
615 else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
616 regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
617 3 << 20, pll_od_to_reg(od3) << 20);
618 }
619
620 #define XTAL_FREQ 24000
621
meson_hdmi_pll_get_m(struct meson_drm * priv,unsigned int pll_freq)622 static unsigned int meson_hdmi_pll_get_m(struct meson_drm *priv,
623 unsigned int pll_freq)
624 {
625 /* The GXBB PLL has a /2 pre-multiplier */
626 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
627 pll_freq /= 2;
628
629 return pll_freq / XTAL_FREQ;
630 }
631
632 #define HDMI_FRAC_MAX_GXBB 4096
633 #define HDMI_FRAC_MAX_GXL 1024
634 #define HDMI_FRAC_MAX_G12A 131072
635
meson_hdmi_pll_get_frac(struct meson_drm * priv,unsigned int m,unsigned int pll_freq)636 static unsigned int meson_hdmi_pll_get_frac(struct meson_drm *priv,
637 unsigned int m,
638 unsigned int pll_freq)
639 {
640 unsigned int parent_freq = XTAL_FREQ;
641 unsigned int frac_max = HDMI_FRAC_MAX_GXL;
642 unsigned int frac_m;
643 unsigned int frac;
644
645 /* The GXBB PLL has a /2 pre-multiplier and a larger FRAC width */
646 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
647 frac_max = HDMI_FRAC_MAX_GXBB;
648 parent_freq *= 2;
649 }
650
651 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
652 frac_max = HDMI_FRAC_MAX_G12A;
653
654 /* We can have a perfect match !*/
655 if (pll_freq / m == parent_freq &&
656 pll_freq % m == 0)
657 return 0;
658
659 frac = div_u64((u64)pll_freq * (u64)frac_max, parent_freq);
660 frac_m = m * frac_max;
661 if (frac_m > frac)
662 return frac_max;
663 frac -= frac_m;
664
665 return min((u16)frac, (u16)(frac_max - 1));
666 }
667
meson_hdmi_pll_validate_params(struct meson_drm * priv,unsigned int m,unsigned int frac)668 static bool meson_hdmi_pll_validate_params(struct meson_drm *priv,
669 unsigned int m,
670 unsigned int frac)
671 {
672 if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
673 /* Empiric supported min/max dividers */
674 if (m < 53 || m > 123)
675 return false;
676 if (frac >= HDMI_FRAC_MAX_GXBB)
677 return false;
678 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
679 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
680 /* Empiric supported min/max dividers */
681 if (m < 106 || m > 247)
682 return false;
683 if (frac >= HDMI_FRAC_MAX_GXL)
684 return false;
685 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
686 /* Empiric supported min/max dividers */
687 if (m < 106 || m > 247)
688 return false;
689 if (frac >= HDMI_FRAC_MAX_G12A)
690 return false;
691 }
692
693 return true;
694 }
695
meson_hdmi_pll_find_params(struct meson_drm * priv,unsigned int freq,unsigned int * m,unsigned int * frac,unsigned int * od)696 static bool meson_hdmi_pll_find_params(struct meson_drm *priv,
697 unsigned int freq,
698 unsigned int *m,
699 unsigned int *frac,
700 unsigned int *od)
701 {
702 /* Cycle from /16 to /2 */
703 for (*od = 16 ; *od > 1 ; *od >>= 1) {
704 *m = meson_hdmi_pll_get_m(priv, freq * *od);
705 if (!*m)
706 continue;
707 *frac = meson_hdmi_pll_get_frac(priv, *m, freq * *od);
708
709 DRM_DEBUG_DRIVER("PLL params for %dkHz: m=%x frac=%x od=%d\n",
710 freq, *m, *frac, *od);
711
712 if (meson_hdmi_pll_validate_params(priv, *m, *frac))
713 return true;
714 }
715
716 return false;
717 }
718
719 /* pll_freq is the frequency after the OD dividers */
720 enum drm_mode_status
meson_vclk_dmt_supported_freq(struct meson_drm * priv,unsigned int freq)721 meson_vclk_dmt_supported_freq(struct meson_drm *priv, unsigned int freq)
722 {
723 unsigned int od, m, frac;
724
725 /* In DMT mode, path after PLL is always /10 */
726 freq *= 10;
727
728 /* Check against soc revision/package limits */
729 if (priv->limits) {
730 if (priv->limits->max_hdmi_phy_freq &&
731 freq > priv->limits->max_hdmi_phy_freq)
732 return MODE_CLOCK_HIGH;
733 }
734
735 if (meson_hdmi_pll_find_params(priv, freq, &m, &frac, &od))
736 return MODE_OK;
737
738 return MODE_CLOCK_RANGE;
739 }
740 EXPORT_SYMBOL_GPL(meson_vclk_dmt_supported_freq);
741
742 /* pll_freq is the frequency after the OD dividers */
meson_hdmi_pll_generic_set(struct meson_drm * priv,unsigned int pll_freq)743 static void meson_hdmi_pll_generic_set(struct meson_drm *priv,
744 unsigned int pll_freq)
745 {
746 unsigned int od, m, frac, od1, od2, od3;
747
748 if (meson_hdmi_pll_find_params(priv, pll_freq, &m, &frac, &od)) {
749 /* OD2 goes to the PHY, and needs to be *10, so keep OD3=1 */
750 od3 = 1;
751 if (od < 4) {
752 od1 = 2;
753 od2 = 1;
754 } else {
755 od2 = od / 4;
756 od1 = od / od2;
757 }
758
759 DRM_DEBUG_DRIVER("PLL params for %dkHz: m=%x frac=%x od=%d/%d/%d\n",
760 pll_freq, m, frac, od1, od2, od3);
761
762 meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
763
764 return;
765 }
766
767 DRM_ERROR("Fatal, unable to find parameters for PLL freq %d\n",
768 pll_freq);
769 }
770
771 enum drm_mode_status
meson_vclk_vic_supported_freq(struct meson_drm * priv,unsigned int phy_freq,unsigned int vclk_freq)772 meson_vclk_vic_supported_freq(struct meson_drm *priv, unsigned int phy_freq,
773 unsigned int vclk_freq)
774 {
775 int i;
776
777 DRM_DEBUG_DRIVER("phy_freq = %d vclk_freq = %d\n",
778 phy_freq, vclk_freq);
779
780 /* Check against soc revision/package limits */
781 if (priv->limits) {
782 if (priv->limits->max_hdmi_phy_freq &&
783 phy_freq > priv->limits->max_hdmi_phy_freq)
784 return MODE_CLOCK_HIGH;
785 }
786
787 for (i = 0 ; params[i].pixel_freq ; ++i) {
788 DRM_DEBUG_DRIVER("i = %d pixel_freq = %d alt = %d\n",
789 i, params[i].pixel_freq,
790 FREQ_1000_1001(params[i].pixel_freq));
791 DRM_DEBUG_DRIVER("i = %d phy_freq = %d alt = %d\n",
792 i, params[i].phy_freq,
793 FREQ_1000_1001(params[i].phy_freq/1000)*1000);
794 /* Match strict frequency */
795 if (phy_freq == params[i].phy_freq &&
796 vclk_freq == params[i].vclk_freq)
797 return MODE_OK;
798 /* Match 1000/1001 variant */
799 if (phy_freq == (FREQ_1000_1001(params[i].phy_freq/1000)*1000) &&
800 vclk_freq == FREQ_1000_1001(params[i].vclk_freq))
801 return MODE_OK;
802 }
803
804 return MODE_CLOCK_RANGE;
805 }
806 EXPORT_SYMBOL_GPL(meson_vclk_vic_supported_freq);
807
meson_vclk_set(struct meson_drm * priv,unsigned int pll_base_freq,unsigned int od1,unsigned int od2,unsigned int od3,unsigned int vid_pll_div,unsigned int vclk_div,unsigned int hdmi_tx_div,unsigned int venc_div,bool hdmi_use_enci,bool vic_alternate_clock)808 static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
809 unsigned int od1, unsigned int od2, unsigned int od3,
810 unsigned int vid_pll_div, unsigned int vclk_div,
811 unsigned int hdmi_tx_div, unsigned int venc_div,
812 bool hdmi_use_enci, bool vic_alternate_clock)
813 {
814 unsigned int m = 0, frac = 0;
815
816 /* Set HDMI-TX sys clock */
817 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
818 CTS_HDMI_SYS_SEL_MASK, 0);
819 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
820 CTS_HDMI_SYS_DIV_MASK, 0);
821 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
822 CTS_HDMI_SYS_EN, CTS_HDMI_SYS_EN);
823
824 /* Set HDMI PLL rate */
825 if (!od1 && !od2 && !od3) {
826 meson_hdmi_pll_generic_set(priv, pll_base_freq);
827 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
828 switch (pll_base_freq) {
829 case 2970000:
830 m = 0x3d;
831 frac = vic_alternate_clock ? 0xd02 : 0xe00;
832 break;
833 case 4320000:
834 m = vic_alternate_clock ? 0x59 : 0x5a;
835 frac = vic_alternate_clock ? 0xe8f : 0;
836 break;
837 case 5940000:
838 m = 0x7b;
839 frac = vic_alternate_clock ? 0xa05 : 0xc00;
840 break;
841 }
842
843 meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
844 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
845 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
846 switch (pll_base_freq) {
847 case 2970000:
848 m = 0x7b;
849 frac = vic_alternate_clock ? 0x281 : 0x300;
850 break;
851 case 4320000:
852 m = vic_alternate_clock ? 0xb3 : 0xb4;
853 frac = vic_alternate_clock ? 0x347 : 0;
854 break;
855 case 5940000:
856 m = 0xf7;
857 frac = vic_alternate_clock ? 0x102 : 0x200;
858 break;
859 }
860
861 meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
862 } else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
863 switch (pll_base_freq) {
864 case 2970000:
865 m = 0x7b;
866 frac = vic_alternate_clock ? 0x140b4 : 0x18000;
867 break;
868 case 4320000:
869 m = vic_alternate_clock ? 0xb3 : 0xb4;
870 frac = vic_alternate_clock ? 0x1a3ee : 0;
871 break;
872 case 5940000:
873 m = 0xf7;
874 frac = vic_alternate_clock ? 0x8148 : 0x10000;
875 break;
876 }
877
878 meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
879 }
880
881 /* Setup vid_pll divider */
882 meson_vid_pll_set(priv, vid_pll_div);
883
884 /* Set VCLK div */
885 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
886 VCLK_SEL_MASK, 0);
887 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
888 VCLK_DIV_MASK, vclk_div - 1);
889
890 /* Set HDMI-TX source */
891 switch (hdmi_tx_div) {
892 case 1:
893 /* enable vclk_div1 gate */
894 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
895 VCLK_DIV1_EN, VCLK_DIV1_EN);
896
897 /* select vclk_div1 for HDMI-TX */
898 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
899 HDMI_TX_PIXEL_SEL_MASK, 0);
900 break;
901 case 2:
902 /* enable vclk_div2 gate */
903 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
904 VCLK_DIV2_EN, VCLK_DIV2_EN);
905
906 /* select vclk_div2 for HDMI-TX */
907 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
908 HDMI_TX_PIXEL_SEL_MASK, 1 << HDMI_TX_PIXEL_SEL_SHIFT);
909 break;
910 case 4:
911 /* enable vclk_div4 gate */
912 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
913 VCLK_DIV4_EN, VCLK_DIV4_EN);
914
915 /* select vclk_div4 for HDMI-TX */
916 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
917 HDMI_TX_PIXEL_SEL_MASK, 2 << HDMI_TX_PIXEL_SEL_SHIFT);
918 break;
919 case 6:
920 /* enable vclk_div6 gate */
921 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
922 VCLK_DIV6_EN, VCLK_DIV6_EN);
923
924 /* select vclk_div6 for HDMI-TX */
925 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
926 HDMI_TX_PIXEL_SEL_MASK, 3 << HDMI_TX_PIXEL_SEL_SHIFT);
927 break;
928 case 12:
929 /* enable vclk_div12 gate */
930 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
931 VCLK_DIV12_EN, VCLK_DIV12_EN);
932
933 /* select vclk_div12 for HDMI-TX */
934 regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
935 HDMI_TX_PIXEL_SEL_MASK, 4 << HDMI_TX_PIXEL_SEL_SHIFT);
936 break;
937 }
938 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
939 HDMI_TX_PIXEL_EN, HDMI_TX_PIXEL_EN);
940
941 /* Set ENCI/ENCP Source */
942 switch (venc_div) {
943 case 1:
944 /* enable vclk_div1 gate */
945 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
946 VCLK_DIV1_EN, VCLK_DIV1_EN);
947
948 if (hdmi_use_enci)
949 /* select vclk_div1 for enci */
950 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
951 CTS_ENCI_SEL_MASK, 0);
952 else
953 /* select vclk_div1 for encp */
954 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
955 CTS_ENCP_SEL_MASK, 0);
956 break;
957 case 2:
958 /* enable vclk_div2 gate */
959 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
960 VCLK_DIV2_EN, VCLK_DIV2_EN);
961
962 if (hdmi_use_enci)
963 /* select vclk_div2 for enci */
964 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
965 CTS_ENCI_SEL_MASK, 1 << CTS_ENCI_SEL_SHIFT);
966 else
967 /* select vclk_div2 for encp */
968 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
969 CTS_ENCP_SEL_MASK, 1 << CTS_ENCP_SEL_SHIFT);
970 break;
971 case 4:
972 /* enable vclk_div4 gate */
973 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
974 VCLK_DIV4_EN, VCLK_DIV4_EN);
975
976 if (hdmi_use_enci)
977 /* select vclk_div4 for enci */
978 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
979 CTS_ENCI_SEL_MASK, 2 << CTS_ENCI_SEL_SHIFT);
980 else
981 /* select vclk_div4 for encp */
982 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
983 CTS_ENCP_SEL_MASK, 2 << CTS_ENCP_SEL_SHIFT);
984 break;
985 case 6:
986 /* enable vclk_div6 gate */
987 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
988 VCLK_DIV6_EN, VCLK_DIV6_EN);
989
990 if (hdmi_use_enci)
991 /* select vclk_div6 for enci */
992 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
993 CTS_ENCI_SEL_MASK, 3 << CTS_ENCI_SEL_SHIFT);
994 else
995 /* select vclk_div6 for encp */
996 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
997 CTS_ENCP_SEL_MASK, 3 << CTS_ENCP_SEL_SHIFT);
998 break;
999 case 12:
1000 /* enable vclk_div12 gate */
1001 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL,
1002 VCLK_DIV12_EN, VCLK_DIV12_EN);
1003
1004 if (hdmi_use_enci)
1005 /* select vclk_div12 for enci */
1006 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
1007 CTS_ENCI_SEL_MASK, 4 << CTS_ENCI_SEL_SHIFT);
1008 else
1009 /* select vclk_div12 for encp */
1010 regmap_update_bits(priv->hhi, HHI_VID_CLK_DIV,
1011 CTS_ENCP_SEL_MASK, 4 << CTS_ENCP_SEL_SHIFT);
1012 break;
1013 }
1014
1015 if (hdmi_use_enci)
1016 /* Enable ENCI clock gate */
1017 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
1018 CTS_ENCI_EN, CTS_ENCI_EN);
1019 else
1020 /* Enable ENCP clock gate */
1021 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL2,
1022 CTS_ENCP_EN, CTS_ENCP_EN);
1023
1024 regmap_update_bits(priv->hhi, HHI_VID_CLK_CNTL, VCLK_EN, VCLK_EN);
1025 }
1026
meson_vclk_setup(struct meson_drm * priv,unsigned int target,unsigned int phy_freq,unsigned int vclk_freq,unsigned int venc_freq,unsigned int dac_freq,bool hdmi_use_enci)1027 void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
1028 unsigned int phy_freq, unsigned int vclk_freq,
1029 unsigned int venc_freq, unsigned int dac_freq,
1030 bool hdmi_use_enci)
1031 {
1032 bool vic_alternate_clock = false;
1033 unsigned int freq;
1034 unsigned int hdmi_tx_div;
1035 unsigned int venc_div;
1036
1037 if (target == MESON_VCLK_TARGET_CVBS) {
1038 meson_venci_cvbs_clock_config(priv);
1039 return;
1040 } else if (target == MESON_VCLK_TARGET_DMT) {
1041 /*
1042 * The DMT clock path is fixed after the PLL:
1043 * - automatic PLL freq + OD management
1044 * - vid_pll_div = VID_PLL_DIV_5
1045 * - vclk_div = 2
1046 * - hdmi_tx_div = 1
1047 * - venc_div = 1
1048 * - encp encoder
1049 */
1050 meson_vclk_set(priv, phy_freq, 0, 0, 0,
1051 VID_PLL_DIV_5, 2, 1, 1, false, false);
1052 return;
1053 }
1054
1055 hdmi_tx_div = vclk_freq / dac_freq;
1056
1057 if (hdmi_tx_div == 0) {
1058 pr_err("Fatal Error, invalid HDMI-TX freq %d\n",
1059 dac_freq);
1060 return;
1061 }
1062
1063 venc_div = vclk_freq / venc_freq;
1064
1065 if (venc_div == 0) {
1066 pr_err("Fatal Error, invalid HDMI venc freq %d\n",
1067 venc_freq);
1068 return;
1069 }
1070
1071 for (freq = 0 ; params[freq].pixel_freq ; ++freq) {
1072 if ((phy_freq == params[freq].phy_freq ||
1073 phy_freq == FREQ_1000_1001(params[freq].phy_freq/1000)*1000) &&
1074 (vclk_freq == params[freq].vclk_freq ||
1075 vclk_freq == FREQ_1000_1001(params[freq].vclk_freq))) {
1076 if (vclk_freq != params[freq].vclk_freq)
1077 vic_alternate_clock = true;
1078 else
1079 vic_alternate_clock = false;
1080
1081 if (freq == MESON_VCLK_HDMI_ENCI_54000 &&
1082 !hdmi_use_enci)
1083 continue;
1084
1085 if (freq == MESON_VCLK_HDMI_DDR_54000 &&
1086 hdmi_use_enci)
1087 continue;
1088
1089 if (freq == MESON_VCLK_HDMI_DDR_148500 &&
1090 dac_freq == vclk_freq)
1091 continue;
1092
1093 if (freq == MESON_VCLK_HDMI_148500 &&
1094 dac_freq != vclk_freq)
1095 continue;
1096 break;
1097 }
1098 }
1099
1100 if (!params[freq].pixel_freq) {
1101 pr_err("Fatal Error, invalid HDMI vclk freq %d\n", vclk_freq);
1102 return;
1103 }
1104
1105 meson_vclk_set(priv, params[freq].pll_freq,
1106 params[freq].pll_od1, params[freq].pll_od2,
1107 params[freq].pll_od3, params[freq].vid_pll_div,
1108 params[freq].vclk_div, hdmi_tx_div, venc_div,
1109 hdmi_use_enci, vic_alternate_clock);
1110 }
1111 EXPORT_SYMBOL_GPL(meson_vclk_setup);
1112