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 intel_atomic_state; 40 struct intel_crtc; 41 struct intel_crtc_state; 42 struct intel_encoder; 43 struct intel_shared_dpll; 44 struct intel_shared_dpll_funcs; 45 46 /** 47 * enum intel_dpll_id - possible DPLL ids 48 * 49 * Enumeration of possible IDs for a DPLL. Real shared dpll ids must be >= 0. 50 */ 51 enum intel_dpll_id { 52 /** 53 * @DPLL_ID_PRIVATE: non-shared dpll in use 54 */ 55 DPLL_ID_PRIVATE = -1, 56 57 /** 58 * @DPLL_ID_PCH_PLL_A: DPLL A in ILK, SNB and IVB 59 */ 60 DPLL_ID_PCH_PLL_A = 0, 61 /** 62 * @DPLL_ID_PCH_PLL_B: DPLL B in ILK, SNB and IVB 63 */ 64 DPLL_ID_PCH_PLL_B = 1, 65 66 67 /** 68 * @DPLL_ID_WRPLL1: HSW and BDW WRPLL1 69 */ 70 DPLL_ID_WRPLL1 = 0, 71 /** 72 * @DPLL_ID_WRPLL2: HSW and BDW WRPLL2 73 */ 74 DPLL_ID_WRPLL2 = 1, 75 /** 76 * @DPLL_ID_SPLL: HSW and BDW SPLL 77 */ 78 DPLL_ID_SPLL = 2, 79 /** 80 * @DPLL_ID_LCPLL_810: HSW and BDW 0.81 GHz LCPLL 81 */ 82 DPLL_ID_LCPLL_810 = 3, 83 /** 84 * @DPLL_ID_LCPLL_1350: HSW and BDW 1.35 GHz LCPLL 85 */ 86 DPLL_ID_LCPLL_1350 = 4, 87 /** 88 * @DPLL_ID_LCPLL_2700: HSW and BDW 2.7 GHz LCPLL 89 */ 90 DPLL_ID_LCPLL_2700 = 5, 91 92 93 /** 94 * @DPLL_ID_SKL_DPLL0: SKL and later DPLL0 95 */ 96 DPLL_ID_SKL_DPLL0 = 0, 97 /** 98 * @DPLL_ID_SKL_DPLL1: SKL and later DPLL1 99 */ 100 DPLL_ID_SKL_DPLL1 = 1, 101 /** 102 * @DPLL_ID_SKL_DPLL2: SKL and later DPLL2 103 */ 104 DPLL_ID_SKL_DPLL2 = 2, 105 /** 106 * @DPLL_ID_SKL_DPLL3: SKL and later DPLL3 107 */ 108 DPLL_ID_SKL_DPLL3 = 3, 109 110 111 /** 112 * @DPLL_ID_ICL_DPLL0: ICL/TGL combo PHY DPLL0 113 */ 114 DPLL_ID_ICL_DPLL0 = 0, 115 /** 116 * @DPLL_ID_ICL_DPLL1: ICL/TGL combo PHY DPLL1 117 */ 118 DPLL_ID_ICL_DPLL1 = 1, 119 /** 120 * @DPLL_ID_EHL_DPLL4: EHL combo PHY DPLL4 121 */ 122 DPLL_ID_EHL_DPLL4 = 2, 123 /** 124 * @DPLL_ID_ICL_TBTPLL: ICL/TGL TBT PLL 125 */ 126 DPLL_ID_ICL_TBTPLL = 2, 127 /** 128 * @DPLL_ID_ICL_MGPLL1: ICL MG PLL 1 port 1 (C), 129 * TGL TC PLL 1 port 1 (TC1) 130 */ 131 DPLL_ID_ICL_MGPLL1 = 3, 132 /** 133 * @DPLL_ID_ICL_MGPLL2: ICL MG PLL 1 port 2 (D) 134 * TGL TC PLL 1 port 2 (TC2) 135 */ 136 DPLL_ID_ICL_MGPLL2 = 4, 137 /** 138 * @DPLL_ID_ICL_MGPLL3: ICL MG PLL 1 port 3 (E) 139 * TGL TC PLL 1 port 3 (TC3) 140 */ 141 DPLL_ID_ICL_MGPLL3 = 5, 142 /** 143 * @DPLL_ID_ICL_MGPLL4: ICL MG PLL 1 port 4 (F) 144 * TGL TC PLL 1 port 4 (TC4) 145 */ 146 DPLL_ID_ICL_MGPLL4 = 6, 147 /** 148 * @DPLL_ID_TGL_MGPLL5: TGL TC PLL port 5 (TC5) 149 */ 150 DPLL_ID_TGL_MGPLL5 = 7, 151 /** 152 * @DPLL_ID_TGL_MGPLL6: TGL TC PLL port 6 (TC6) 153 */ 154 DPLL_ID_TGL_MGPLL6 = 8, 155 156 /** 157 * @DPLL_ID_DG1_DPLL0: DG1 combo PHY DPLL0 158 */ 159 DPLL_ID_DG1_DPLL0 = 0, 160 /** 161 * @DPLL_ID_DG1_DPLL1: DG1 combo PHY DPLL1 162 */ 163 DPLL_ID_DG1_DPLL1 = 1, 164 /** 165 * @DPLL_ID_DG1_DPLL2: DG1 combo PHY DPLL2 166 */ 167 DPLL_ID_DG1_DPLL2 = 2, 168 /** 169 * @DPLL_ID_DG1_DPLL3: DG1 combo PHY DPLL3 170 */ 171 DPLL_ID_DG1_DPLL3 = 3, 172 }; 173 174 #define I915_NUM_PLLS 9 175 176 enum icl_port_dpll_id { 177 ICL_PORT_DPLL_DEFAULT, 178 ICL_PORT_DPLL_MG_PHY, 179 180 ICL_PORT_DPLL_COUNT, 181 }; 182 183 struct intel_dpll_hw_state { 184 /* i9xx, pch plls */ 185 u32 dpll; 186 u32 dpll_md; 187 u32 fp0; 188 u32 fp1; 189 190 /* hsw, bdw */ 191 u32 wrpll; 192 u32 spll; 193 194 /* skl */ 195 /* 196 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in 197 * lower part of ctrl1 and they get shifted into position when writing 198 * the register. This allows us to easily compare the state to share 199 * the DPLL. 200 */ 201 u32 ctrl1; 202 /* HDMI only, 0 when used for DP */ 203 u32 cfgcr1, cfgcr2; 204 205 /* icl */ 206 u32 cfgcr0; 207 208 /* tgl */ 209 u32 div0; 210 211 /* bxt */ 212 u32 ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10, pcsdw12; 213 214 /* 215 * ICL uses the following, already defined: 216 * u32 cfgcr0, cfgcr1; 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 /** 233 * struct intel_shared_dpll_state - hold the DPLL atomic state 234 * 235 * This structure holds an atomic state for the DPLL, that can represent 236 * either its current state (in struct &intel_shared_dpll) or a desired 237 * future state which would be applied by an atomic mode set (stored in 238 * a struct &intel_atomic_state). 239 * 240 * See also intel_reserve_shared_dplls() and intel_release_shared_dplls(). 241 */ 242 struct intel_shared_dpll_state { 243 /** 244 * @pipe_mask: mask of pipes using this DPLL, active or not 245 */ 246 u8 pipe_mask; 247 248 /** 249 * @hw_state: hardware configuration for the DPLL stored in 250 * struct &intel_dpll_hw_state. 251 */ 252 struct intel_dpll_hw_state hw_state; 253 }; 254 255 /** 256 * struct dpll_info - display PLL platform specific info 257 */ 258 struct dpll_info { 259 /** 260 * @name: DPLL name; used for logging 261 */ 262 const char *name; 263 264 /** 265 * @funcs: platform specific hooks 266 */ 267 const struct intel_shared_dpll_funcs *funcs; 268 269 /** 270 * @id: unique indentifier for this DPLL 271 */ 272 enum intel_dpll_id id; 273 274 /** 275 * @power_domain: extra power domain required by the DPLL 276 */ 277 enum intel_display_power_domain power_domain; 278 279 /** 280 * @always_on: 281 * 282 * Inform the state checker that the DPLL is kept enabled even if 283 * not in use by any CRTC. 284 */ 285 bool always_on; 286 287 /** 288 * @is_alt_port_dpll: 289 * 290 * Inform the state checker that the DPLL can be used as a fallback 291 * (for TC->TBT fallback). 292 */ 293 bool is_alt_port_dpll; 294 }; 295 296 /** 297 * struct intel_shared_dpll - display PLL with tracked state and users 298 */ 299 struct intel_shared_dpll { 300 /** 301 * @state: 302 * 303 * Store the state for the pll, including its hw state 304 * and CRTCs using it. 305 */ 306 struct intel_shared_dpll_state state; 307 308 /** 309 * @index: index for atomic state 310 */ 311 u8 index; 312 313 /** 314 * @active_mask: mask of active pipes (i.e. DPMS on) using this DPLL 315 */ 316 u8 active_mask; 317 318 /** 319 * @on: is the PLL actually active? Disabled during modeset 320 */ 321 bool on; 322 323 /** 324 * @info: platform specific info 325 */ 326 const struct dpll_info *info; 327 328 /** 329 * @wakeref: In some platforms a device-level runtime pm reference may 330 * need to be grabbed to disable DC states while this DPLL is enabled 331 */ 332 intel_wakeref_t wakeref; 333 }; 334 335 #define SKL_DPLL0 0 336 #define SKL_DPLL1 1 337 #define SKL_DPLL2 2 338 #define SKL_DPLL3 3 339 340 /* shared dpll functions */ 341 struct intel_shared_dpll * 342 intel_get_shared_dpll_by_id(struct drm_i915_private *i915, 343 enum intel_dpll_id id); 344 void assert_shared_dpll(struct drm_i915_private *i915, 345 struct intel_shared_dpll *pll, 346 bool state); 347 #define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true) 348 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false) 349 int intel_compute_shared_dplls(struct intel_atomic_state *state, 350 struct intel_crtc *crtc, 351 struct intel_encoder *encoder); 352 int intel_reserve_shared_dplls(struct intel_atomic_state *state, 353 struct intel_crtc *crtc, 354 struct intel_encoder *encoder); 355 void intel_release_shared_dplls(struct intel_atomic_state *state, 356 struct intel_crtc *crtc); 357 void intel_unreference_shared_dpll_crtc(const struct intel_crtc *crtc, 358 const struct intel_shared_dpll *pll, 359 struct intel_shared_dpll_state *shared_dpll_state); 360 void icl_set_active_port_dpll(struct intel_crtc_state *crtc_state, 361 enum icl_port_dpll_id port_dpll_id); 362 void intel_update_active_dpll(struct intel_atomic_state *state, 363 struct intel_crtc *crtc, 364 struct intel_encoder *encoder); 365 int intel_dpll_get_freq(struct drm_i915_private *i915, 366 const struct intel_shared_dpll *pll, 367 const struct intel_dpll_hw_state *pll_state); 368 bool intel_dpll_get_hw_state(struct drm_i915_private *i915, 369 struct intel_shared_dpll *pll, 370 struct intel_dpll_hw_state *hw_state); 371 void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state); 372 void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state); 373 void intel_shared_dpll_swap_state(struct intel_atomic_state *state); 374 void intel_shared_dpll_init(struct drm_i915_private *i915); 375 void intel_dpll_update_ref_clks(struct drm_i915_private *i915); 376 void intel_dpll_readout_hw_state(struct drm_i915_private *i915); 377 void intel_dpll_sanitize_state(struct drm_i915_private *i915); 378 379 void intel_dpll_dump_hw_state(struct drm_i915_private *i915, 380 const struct intel_dpll_hw_state *hw_state); 381 enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port); 382 bool intel_dpll_is_combophy(enum intel_dpll_id id); 383 384 void intel_shared_dpll_state_verify(struct intel_atomic_state *state, 385 struct intel_crtc *crtc); 386 void intel_shared_dpll_verify_disabled(struct intel_atomic_state *state); 387 388 #endif /* _INTEL_DPLL_MGR_H_ */ 389