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 37 enum tc_port; 38 struct drm_i915_private; 39 struct drm_printer; 40 struct intel_atomic_state; 41 struct intel_crtc; 42 struct intel_crtc_state; 43 struct intel_encoder; 44 struct intel_shared_dpll; 45 struct 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 */ 52 enum 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 9 176 177 enum icl_port_dpll_id { 178 ICL_PORT_DPLL_DEFAULT, 179 ICL_PORT_DPLL_MG_PHY, 180 181 ICL_PORT_DPLL_COUNT, 182 }; 183 184 struct i9xx_dpll_hw_state { 185 u32 dpll; 186 u32 dpll_md; 187 u32 fp0; 188 u32 fp1; 189 }; 190 191 struct hsw_dpll_hw_state { 192 u32 wrpll; 193 u32 spll; 194 }; 195 196 struct 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 }; 207 208 struct bxt_dpll_hw_state { 209 u32 ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10, pcsdw12; 210 }; 211 212 struct 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 }; 231 232 struct 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 }; 243 244 struct intel_c10pll_state { 245 u32 clock; /* in KHz */ 246 u8 tx; 247 u8 cmn; 248 u8 pll[20]; 249 }; 250 251 struct 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 }; 260 261 struct intel_cx0pll_state { 262 union { 263 struct intel_c10pll_state c10; 264 struct intel_c20pll_state c20; 265 }; 266 bool ssc_enabled; 267 }; 268 269 struct intel_dpll_hw_state { 270 union { 271 struct i9xx_dpll_hw_state i9xx; 272 struct hsw_dpll_hw_state hsw; 273 struct skl_dpll_hw_state skl; 274 struct bxt_dpll_hw_state bxt; 275 struct icl_dpll_hw_state icl; 276 struct intel_mpllb_state mpllb; 277 struct intel_cx0pll_state cx0pll; 278 }; 279 }; 280 281 /** 282 * struct intel_shared_dpll_state - hold the DPLL atomic state 283 * 284 * This structure holds an atomic state for the DPLL, that can represent 285 * either its current state (in struct &intel_shared_dpll) or a desired 286 * future state which would be applied by an atomic mode set (stored in 287 * a struct &intel_atomic_state). 288 * 289 * See also intel_reserve_shared_dplls() and intel_release_shared_dplls(). 290 */ 291 struct intel_shared_dpll_state { 292 /** 293 * @pipe_mask: mask of pipes using this DPLL, active or not 294 */ 295 u8 pipe_mask; 296 297 /** 298 * @hw_state: hardware configuration for the DPLL stored in 299 * struct &intel_dpll_hw_state. 300 */ 301 struct intel_dpll_hw_state hw_state; 302 }; 303 304 /** 305 * struct dpll_info - display PLL platform specific info 306 */ 307 struct dpll_info { 308 /** 309 * @name: DPLL name; used for logging 310 */ 311 const char *name; 312 313 /** 314 * @funcs: platform specific hooks 315 */ 316 const struct intel_shared_dpll_funcs *funcs; 317 318 /** 319 * @id: unique indentifier for this DPLL 320 */ 321 enum intel_dpll_id id; 322 323 /** 324 * @power_domain: extra power domain required by the DPLL 325 */ 326 enum intel_display_power_domain power_domain; 327 328 /** 329 * @always_on: 330 * 331 * Inform the state checker that the DPLL is kept enabled even if 332 * not in use by any CRTC. 333 */ 334 bool always_on; 335 336 /** 337 * @is_alt_port_dpll: 338 * 339 * Inform the state checker that the DPLL can be used as a fallback 340 * (for TC->TBT fallback). 341 */ 342 bool is_alt_port_dpll; 343 }; 344 345 /** 346 * struct intel_shared_dpll - display PLL with tracked state and users 347 */ 348 struct intel_shared_dpll { 349 /** 350 * @state: 351 * 352 * Store the state for the pll, including its hw state 353 * and CRTCs using it. 354 */ 355 struct intel_shared_dpll_state state; 356 357 /** 358 * @index: index for atomic state 359 */ 360 u8 index; 361 362 /** 363 * @active_mask: mask of active pipes (i.e. DPMS on) using this DPLL 364 */ 365 u8 active_mask; 366 367 /** 368 * @on: is the PLL actually active? Disabled during modeset 369 */ 370 bool on; 371 372 /** 373 * @info: platform specific info 374 */ 375 const struct dpll_info *info; 376 377 /** 378 * @wakeref: In some platforms a device-level runtime pm reference may 379 * need to be grabbed to disable DC states while this DPLL is enabled 380 */ 381 intel_wakeref_t wakeref; 382 }; 383 384 #define SKL_DPLL0 0 385 #define SKL_DPLL1 1 386 #define SKL_DPLL2 2 387 #define SKL_DPLL3 3 388 389 /* shared dpll functions */ 390 struct intel_shared_dpll * 391 intel_get_shared_dpll_by_id(struct drm_i915_private *i915, 392 enum intel_dpll_id id); 393 void assert_shared_dpll(struct drm_i915_private *i915, 394 struct intel_shared_dpll *pll, 395 bool state); 396 #define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true) 397 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false) 398 int intel_compute_shared_dplls(struct intel_atomic_state *state, 399 struct intel_crtc *crtc, 400 struct intel_encoder *encoder); 401 int intel_reserve_shared_dplls(struct intel_atomic_state *state, 402 struct intel_crtc *crtc, 403 struct intel_encoder *encoder); 404 void intel_release_shared_dplls(struct intel_atomic_state *state, 405 struct intel_crtc *crtc); 406 void intel_unreference_shared_dpll_crtc(const struct intel_crtc *crtc, 407 const struct intel_shared_dpll *pll, 408 struct intel_shared_dpll_state *shared_dpll_state); 409 void icl_set_active_port_dpll(struct intel_crtc_state *crtc_state, 410 enum icl_port_dpll_id port_dpll_id); 411 void intel_update_active_dpll(struct intel_atomic_state *state, 412 struct intel_crtc *crtc, 413 struct intel_encoder *encoder); 414 int intel_dpll_get_freq(struct drm_i915_private *i915, 415 const struct intel_shared_dpll *pll, 416 const struct intel_dpll_hw_state *dpll_hw_state); 417 bool intel_dpll_get_hw_state(struct drm_i915_private *i915, 418 struct intel_shared_dpll *pll, 419 struct intel_dpll_hw_state *dpll_hw_state); 420 void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state); 421 void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state); 422 void intel_shared_dpll_swap_state(struct intel_atomic_state *state); 423 void intel_shared_dpll_init(struct drm_i915_private *i915); 424 void intel_dpll_update_ref_clks(struct drm_i915_private *i915); 425 void intel_dpll_readout_hw_state(struct drm_i915_private *i915); 426 void intel_dpll_sanitize_state(struct drm_i915_private *i915); 427 428 void intel_dpll_dump_hw_state(struct drm_i915_private *i915, 429 struct drm_printer *p, 430 const struct intel_dpll_hw_state *dpll_hw_state); 431 bool intel_dpll_compare_hw_state(struct drm_i915_private *i915, 432 const struct intel_dpll_hw_state *a, 433 const struct intel_dpll_hw_state *b); 434 enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port); 435 bool intel_dpll_is_combophy(enum intel_dpll_id id); 436 437 void intel_shared_dpll_state_verify(struct intel_atomic_state *state, 438 struct intel_crtc *crtc); 439 void intel_shared_dpll_verify_disabled(struct intel_atomic_state *state); 440 441 #endif /* _INTEL_DPLL_MGR_H_ */ 442