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Linux kernel mirror (for testing)
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1/*
2 * Copyright © 2012-2016 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 */
24
25#ifndef _INTEL_DPLL_MGR_H_
26#define _INTEL_DPLL_MGR_H_
27
28#include <linux/types.h>
29
30#include "intel_display_power.h"
31#include "intel_wakeref.h"
32
33#define for_each_shared_dpll(__i915, __pll, __i) \
34 for ((__i) = 0; (__i) < (__i915)->display.dpll.num_shared_dpll && \
35 ((__pll) = &(__i915)->display.dpll.shared_dplls[(__i)]) ; (__i)++)
36
37enum tc_port;
38struct drm_i915_private;
39struct drm_printer;
40struct intel_atomic_state;
41struct intel_crtc;
42struct intel_crtc_state;
43struct intel_encoder;
44struct intel_shared_dpll;
45struct intel_shared_dpll_funcs;
46
47/**
48 * enum intel_dpll_id - possible DPLL ids
49 *
50 * Enumeration of possible IDs for a DPLL. Real shared dpll ids must be >= 0.
51 */
52enum intel_dpll_id {
53 /**
54 * @DPLL_ID_PRIVATE: non-shared dpll in use
55 */
56 DPLL_ID_PRIVATE = -1,
57
58 /**
59 * @DPLL_ID_PCH_PLL_A: DPLL A in ILK, SNB and IVB
60 */
61 DPLL_ID_PCH_PLL_A = 0,
62 /**
63 * @DPLL_ID_PCH_PLL_B: DPLL B in ILK, SNB and IVB
64 */
65 DPLL_ID_PCH_PLL_B = 1,
66
67
68 /**
69 * @DPLL_ID_WRPLL1: HSW and BDW WRPLL1
70 */
71 DPLL_ID_WRPLL1 = 0,
72 /**
73 * @DPLL_ID_WRPLL2: HSW and BDW WRPLL2
74 */
75 DPLL_ID_WRPLL2 = 1,
76 /**
77 * @DPLL_ID_SPLL: HSW and BDW SPLL
78 */
79 DPLL_ID_SPLL = 2,
80 /**
81 * @DPLL_ID_LCPLL_810: HSW and BDW 0.81 GHz LCPLL
82 */
83 DPLL_ID_LCPLL_810 = 3,
84 /**
85 * @DPLL_ID_LCPLL_1350: HSW and BDW 1.35 GHz LCPLL
86 */
87 DPLL_ID_LCPLL_1350 = 4,
88 /**
89 * @DPLL_ID_LCPLL_2700: HSW and BDW 2.7 GHz LCPLL
90 */
91 DPLL_ID_LCPLL_2700 = 5,
92
93
94 /**
95 * @DPLL_ID_SKL_DPLL0: SKL and later DPLL0
96 */
97 DPLL_ID_SKL_DPLL0 = 0,
98 /**
99 * @DPLL_ID_SKL_DPLL1: SKL and later DPLL1
100 */
101 DPLL_ID_SKL_DPLL1 = 1,
102 /**
103 * @DPLL_ID_SKL_DPLL2: SKL and later DPLL2
104 */
105 DPLL_ID_SKL_DPLL2 = 2,
106 /**
107 * @DPLL_ID_SKL_DPLL3: SKL and later DPLL3
108 */
109 DPLL_ID_SKL_DPLL3 = 3,
110
111
112 /**
113 * @DPLL_ID_ICL_DPLL0: ICL/TGL combo PHY DPLL0
114 */
115 DPLL_ID_ICL_DPLL0 = 0,
116 /**
117 * @DPLL_ID_ICL_DPLL1: ICL/TGL combo PHY DPLL1
118 */
119 DPLL_ID_ICL_DPLL1 = 1,
120 /**
121 * @DPLL_ID_EHL_DPLL4: EHL combo PHY DPLL4
122 */
123 DPLL_ID_EHL_DPLL4 = 2,
124 /**
125 * @DPLL_ID_ICL_TBTPLL: ICL/TGL TBT PLL
126 */
127 DPLL_ID_ICL_TBTPLL = 2,
128 /**
129 * @DPLL_ID_ICL_MGPLL1: ICL MG PLL 1 port 1 (C),
130 * TGL TC PLL 1 port 1 (TC1)
131 */
132 DPLL_ID_ICL_MGPLL1 = 3,
133 /**
134 * @DPLL_ID_ICL_MGPLL2: ICL MG PLL 1 port 2 (D)
135 * TGL TC PLL 1 port 2 (TC2)
136 */
137 DPLL_ID_ICL_MGPLL2 = 4,
138 /**
139 * @DPLL_ID_ICL_MGPLL3: ICL MG PLL 1 port 3 (E)
140 * TGL TC PLL 1 port 3 (TC3)
141 */
142 DPLL_ID_ICL_MGPLL3 = 5,
143 /**
144 * @DPLL_ID_ICL_MGPLL4: ICL MG PLL 1 port 4 (F)
145 * TGL TC PLL 1 port 4 (TC4)
146 */
147 DPLL_ID_ICL_MGPLL4 = 6,
148 /**
149 * @DPLL_ID_TGL_MGPLL5: TGL TC PLL port 5 (TC5)
150 */
151 DPLL_ID_TGL_MGPLL5 = 7,
152 /**
153 * @DPLL_ID_TGL_MGPLL6: TGL TC PLL port 6 (TC6)
154 */
155 DPLL_ID_TGL_MGPLL6 = 8,
156
157 /**
158 * @DPLL_ID_DG1_DPLL0: DG1 combo PHY DPLL0
159 */
160 DPLL_ID_DG1_DPLL0 = 0,
161 /**
162 * @DPLL_ID_DG1_DPLL1: DG1 combo PHY DPLL1
163 */
164 DPLL_ID_DG1_DPLL1 = 1,
165 /**
166 * @DPLL_ID_DG1_DPLL2: DG1 combo PHY DPLL2
167 */
168 DPLL_ID_DG1_DPLL2 = 2,
169 /**
170 * @DPLL_ID_DG1_DPLL3: DG1 combo PHY DPLL3
171 */
172 DPLL_ID_DG1_DPLL3 = 3,
173};
174
175#define I915_NUM_PLLS 9
176
177enum icl_port_dpll_id {
178 ICL_PORT_DPLL_DEFAULT,
179 ICL_PORT_DPLL_MG_PHY,
180
181 ICL_PORT_DPLL_COUNT,
182};
183
184struct i9xx_dpll_hw_state {
185 u32 dpll;
186 u32 dpll_md;
187 u32 fp0;
188 u32 fp1;
189};
190
191struct hsw_dpll_hw_state {
192 u32 wrpll;
193 u32 spll;
194};
195
196struct skl_dpll_hw_state {
197 /*
198 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
199 * lower part of ctrl1 and they get shifted into position when writing
200 * the register. This allows us to easily compare the state to share
201 * the DPLL.
202 */
203 u32 ctrl1;
204 /* HDMI only, 0 when used for DP */
205 u32 cfgcr1, cfgcr2;
206};
207
208struct bxt_dpll_hw_state {
209 u32 ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10, pcsdw12;
210};
211
212struct icl_dpll_hw_state {
213 u32 cfgcr0, cfgcr1;
214
215 /* tgl */
216 u32 div0;
217
218 u32 mg_refclkin_ctl;
219 u32 mg_clktop2_coreclkctl1;
220 u32 mg_clktop2_hsclkctl;
221 u32 mg_pll_div0;
222 u32 mg_pll_div1;
223 u32 mg_pll_lf;
224 u32 mg_pll_frac_lock;
225 u32 mg_pll_ssc;
226 u32 mg_pll_bias;
227 u32 mg_pll_tdc_coldst_bias;
228 u32 mg_pll_bias_mask;
229 u32 mg_pll_tdc_coldst_bias_mask;
230};
231
232struct intel_mpllb_state {
233 u32 clock; /* in KHz */
234 u32 ref_control;
235 u32 mpllb_cp;
236 u32 mpllb_div;
237 u32 mpllb_div2;
238 u32 mpllb_fracn1;
239 u32 mpllb_fracn2;
240 u32 mpllb_sscen;
241 u32 mpllb_sscstep;
242};
243
244struct intel_c10pll_state {
245 u32 clock; /* in KHz */
246 u8 tx;
247 u8 cmn;
248 u8 pll[20];
249};
250
251struct intel_c20pll_state {
252 u32 clock; /* in kHz */
253 u16 tx[3];
254 u16 cmn[4];
255 union {
256 u16 mplla[10];
257 u16 mpllb[11];
258 };
259};
260
261struct intel_cx0pll_state {
262 union {
263 struct intel_c10pll_state c10;
264 struct intel_c20pll_state c20;
265 };
266 bool ssc_enabled;
267 bool use_c10;
268 bool tbt_mode;
269};
270
271struct intel_dpll_hw_state {
272 union {
273 struct i9xx_dpll_hw_state i9xx;
274 struct hsw_dpll_hw_state hsw;
275 struct skl_dpll_hw_state skl;
276 struct bxt_dpll_hw_state bxt;
277 struct icl_dpll_hw_state icl;
278 struct intel_mpllb_state mpllb;
279 struct intel_cx0pll_state cx0pll;
280 };
281};
282
283/**
284 * struct intel_shared_dpll_state - hold the DPLL atomic state
285 *
286 * This structure holds an atomic state for the DPLL, that can represent
287 * either its current state (in struct &intel_shared_dpll) or a desired
288 * future state which would be applied by an atomic mode set (stored in
289 * a struct &intel_atomic_state).
290 *
291 * See also intel_reserve_shared_dplls() and intel_release_shared_dplls().
292 */
293struct intel_shared_dpll_state {
294 /**
295 * @pipe_mask: mask of pipes using this DPLL, active or not
296 */
297 u8 pipe_mask;
298
299 /**
300 * @hw_state: hardware configuration for the DPLL stored in
301 * struct &intel_dpll_hw_state.
302 */
303 struct intel_dpll_hw_state hw_state;
304};
305
306/**
307 * struct dpll_info - display PLL platform specific info
308 */
309struct dpll_info {
310 /**
311 * @name: DPLL name; used for logging
312 */
313 const char *name;
314
315 /**
316 * @funcs: platform specific hooks
317 */
318 const struct intel_shared_dpll_funcs *funcs;
319
320 /**
321 * @id: unique indentifier for this DPLL
322 */
323 enum intel_dpll_id id;
324
325 /**
326 * @power_domain: extra power domain required by the DPLL
327 */
328 enum intel_display_power_domain power_domain;
329
330 /**
331 * @always_on:
332 *
333 * Inform the state checker that the DPLL is kept enabled even if
334 * not in use by any CRTC.
335 */
336 bool always_on;
337
338 /**
339 * @is_alt_port_dpll:
340 *
341 * Inform the state checker that the DPLL can be used as a fallback
342 * (for TC->TBT fallback).
343 */
344 bool is_alt_port_dpll;
345};
346
347/**
348 * struct intel_shared_dpll - display PLL with tracked state and users
349 */
350struct intel_shared_dpll {
351 /**
352 * @state:
353 *
354 * Store the state for the pll, including its hw state
355 * and CRTCs using it.
356 */
357 struct intel_shared_dpll_state state;
358
359 /**
360 * @index: index for atomic state
361 */
362 u8 index;
363
364 /**
365 * @active_mask: mask of active pipes (i.e. DPMS on) using this DPLL
366 */
367 u8 active_mask;
368
369 /**
370 * @on: is the PLL actually active? Disabled during modeset
371 */
372 bool on;
373
374 /**
375 * @info: platform specific info
376 */
377 const struct dpll_info *info;
378
379 /**
380 * @wakeref: In some platforms a device-level runtime pm reference may
381 * need to be grabbed to disable DC states while this DPLL is enabled
382 */
383 intel_wakeref_t wakeref;
384};
385
386#define SKL_DPLL0 0
387#define SKL_DPLL1 1
388#define SKL_DPLL2 2
389#define SKL_DPLL3 3
390
391/* shared dpll functions */
392struct intel_shared_dpll *
393intel_get_shared_dpll_by_id(struct drm_i915_private *i915,
394 enum intel_dpll_id id);
395void assert_shared_dpll(struct drm_i915_private *i915,
396 struct intel_shared_dpll *pll,
397 bool state);
398#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
399#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
400int intel_compute_shared_dplls(struct intel_atomic_state *state,
401 struct intel_crtc *crtc,
402 struct intel_encoder *encoder);
403int intel_reserve_shared_dplls(struct intel_atomic_state *state,
404 struct intel_crtc *crtc,
405 struct intel_encoder *encoder);
406void intel_release_shared_dplls(struct intel_atomic_state *state,
407 struct intel_crtc *crtc);
408void intel_unreference_shared_dpll_crtc(const struct intel_crtc *crtc,
409 const struct intel_shared_dpll *pll,
410 struct intel_shared_dpll_state *shared_dpll_state);
411void icl_set_active_port_dpll(struct intel_crtc_state *crtc_state,
412 enum icl_port_dpll_id port_dpll_id);
413void intel_update_active_dpll(struct intel_atomic_state *state,
414 struct intel_crtc *crtc,
415 struct intel_encoder *encoder);
416int intel_dpll_get_freq(struct drm_i915_private *i915,
417 const struct intel_shared_dpll *pll,
418 const struct intel_dpll_hw_state *dpll_hw_state);
419bool intel_dpll_get_hw_state(struct drm_i915_private *i915,
420 struct intel_shared_dpll *pll,
421 struct intel_dpll_hw_state *dpll_hw_state);
422void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state);
423void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state);
424void intel_shared_dpll_swap_state(struct intel_atomic_state *state);
425void intel_shared_dpll_init(struct drm_i915_private *i915);
426void intel_dpll_update_ref_clks(struct drm_i915_private *i915);
427void intel_dpll_readout_hw_state(struct drm_i915_private *i915);
428void intel_dpll_sanitize_state(struct drm_i915_private *i915);
429
430void intel_dpll_dump_hw_state(struct drm_i915_private *i915,
431 struct drm_printer *p,
432 const struct intel_dpll_hw_state *dpll_hw_state);
433bool intel_dpll_compare_hw_state(struct drm_i915_private *i915,
434 const struct intel_dpll_hw_state *a,
435 const struct intel_dpll_hw_state *b);
436enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port);
437bool intel_dpll_is_combophy(enum intel_dpll_id id);
438
439void intel_shared_dpll_state_verify(struct intel_atomic_state *state,
440 struct intel_crtc *crtc);
441void intel_shared_dpll_verify_disabled(struct intel_atomic_state *state);
442
443#endif /* _INTEL_DPLL_MGR_H_ */