349 lines
8.7 KiB
C
349 lines
8.7 KiB
C
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/*
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* Copyright © 2012-2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef _INTEL_DPLL_MGR_H_
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#define _INTEL_DPLL_MGR_H_
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/*FIXME: Move this to a more appropriate place. */
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#define abs_diff(a, b) ({ \
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typeof(a) __a = (a); \
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typeof(b) __b = (b); \
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(void) (&__a == &__b); \
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__a > __b ? (__a - __b) : (__b - __a); })
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struct drm_i915_private;
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struct intel_crtc;
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struct intel_crtc_state;
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struct intel_encoder;
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struct intel_shared_dpll;
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struct intel_dpll_mgr;
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/**
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* enum intel_dpll_id - possible DPLL ids
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*
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* Enumeration of possible IDs for a DPLL. Real shared dpll ids must be >= 0.
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*/
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enum intel_dpll_id {
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/**
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* @DPLL_ID_PRIVATE: non-shared dpll in use
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*/
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DPLL_ID_PRIVATE = -1,
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/**
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* @DPLL_ID_PCH_PLL_A: DPLL A in ILK, SNB and IVB
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*/
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DPLL_ID_PCH_PLL_A = 0,
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/**
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* @DPLL_ID_PCH_PLL_B: DPLL B in ILK, SNB and IVB
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*/
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DPLL_ID_PCH_PLL_B = 1,
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/**
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* @DPLL_ID_WRPLL1: HSW and BDW WRPLL1
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*/
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DPLL_ID_WRPLL1 = 0,
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/**
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* @DPLL_ID_WRPLL2: HSW and BDW WRPLL2
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*/
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DPLL_ID_WRPLL2 = 1,
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/**
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* @DPLL_ID_SPLL: HSW and BDW SPLL
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*/
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DPLL_ID_SPLL = 2,
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/**
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* @DPLL_ID_LCPLL_810: HSW and BDW 0.81 GHz LCPLL
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*/
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DPLL_ID_LCPLL_810 = 3,
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/**
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* @DPLL_ID_LCPLL_1350: HSW and BDW 1.35 GHz LCPLL
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*/
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DPLL_ID_LCPLL_1350 = 4,
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/**
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* @DPLL_ID_LCPLL_2700: HSW and BDW 2.7 GHz LCPLL
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*/
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DPLL_ID_LCPLL_2700 = 5,
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/**
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* @DPLL_ID_SKL_DPLL0: SKL and later DPLL0
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*/
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DPLL_ID_SKL_DPLL0 = 0,
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/**
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* @DPLL_ID_SKL_DPLL1: SKL and later DPLL1
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*/
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DPLL_ID_SKL_DPLL1 = 1,
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/**
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* @DPLL_ID_SKL_DPLL2: SKL and later DPLL2
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*/
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DPLL_ID_SKL_DPLL2 = 2,
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/**
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* @DPLL_ID_SKL_DPLL3: SKL and later DPLL3
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*/
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DPLL_ID_SKL_DPLL3 = 3,
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/**
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* @DPLL_ID_ICL_DPLL0: ICL combo PHY DPLL0
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*/
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DPLL_ID_ICL_DPLL0 = 0,
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/**
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* @DPLL_ID_ICL_DPLL1: ICL combo PHY DPLL1
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*/
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DPLL_ID_ICL_DPLL1 = 1,
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/**
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* @DPLL_ID_ICL_TBTPLL: ICL TBT PLL
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*/
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DPLL_ID_ICL_TBTPLL = 2,
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/**
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* @DPLL_ID_ICL_MGPLL1: ICL MG PLL 1 port 1 (C)
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*/
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DPLL_ID_ICL_MGPLL1 = 3,
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/**
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* @DPLL_ID_ICL_MGPLL2: ICL MG PLL 1 port 2 (D)
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*/
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DPLL_ID_ICL_MGPLL2 = 4,
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/**
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* @DPLL_ID_ICL_MGPLL3: ICL MG PLL 1 port 3 (E)
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*/
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DPLL_ID_ICL_MGPLL3 = 5,
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/**
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* @DPLL_ID_ICL_MGPLL4: ICL MG PLL 1 port 4 (F)
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*/
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DPLL_ID_ICL_MGPLL4 = 6,
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};
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#define I915_NUM_PLLS 7
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struct intel_dpll_hw_state {
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/* i9xx, pch plls */
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uint32_t dpll;
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uint32_t dpll_md;
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uint32_t fp0;
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uint32_t fp1;
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/* hsw, bdw */
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uint32_t wrpll;
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uint32_t spll;
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/* skl */
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/*
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* DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
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* lower part of ctrl1 and they get shifted into position when writing
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* the register. This allows us to easily compare the state to share
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* the DPLL.
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*/
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uint32_t ctrl1;
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/* HDMI only, 0 when used for DP */
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uint32_t cfgcr1, cfgcr2;
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/* cnl */
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uint32_t cfgcr0;
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/* CNL also uses cfgcr1 */
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/* bxt */
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uint32_t ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10,
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pcsdw12;
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/*
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* ICL uses the following, already defined:
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* uint32_t cfgcr0, cfgcr1;
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*/
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uint32_t mg_refclkin_ctl;
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uint32_t mg_clktop2_coreclkctl1;
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uint32_t mg_clktop2_hsclkctl;
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uint32_t mg_pll_div0;
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uint32_t mg_pll_div1;
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uint32_t mg_pll_lf;
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uint32_t mg_pll_frac_lock;
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uint32_t mg_pll_ssc;
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uint32_t mg_pll_bias;
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uint32_t mg_pll_tdc_coldst_bias;
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uint32_t mg_pll_bias_mask;
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uint32_t mg_pll_tdc_coldst_bias_mask;
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};
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/**
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* struct intel_shared_dpll_state - hold the DPLL atomic state
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*
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* This structure holds an atomic state for the DPLL, that can represent
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* either its current state (in struct &intel_shared_dpll) or a desired
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* future state which would be applied by an atomic mode set (stored in
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* a struct &intel_atomic_state).
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*
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* See also intel_get_shared_dpll() and intel_release_shared_dpll().
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*/
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struct intel_shared_dpll_state {
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/**
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* @crtc_mask: mask of CRTC using this DPLL, active or not
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*/
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unsigned crtc_mask;
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/**
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* @hw_state: hardware configuration for the DPLL stored in
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* struct &intel_dpll_hw_state.
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*/
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struct intel_dpll_hw_state hw_state;
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};
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/**
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* struct intel_shared_dpll_funcs - platform specific hooks for managing DPLLs
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*/
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struct intel_shared_dpll_funcs {
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/**
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* @prepare:
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*
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* Optional hook to perform operations prior to enabling the PLL.
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* Called from intel_prepare_shared_dpll() function unless the PLL
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* is already enabled.
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*/
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void (*prepare)(struct drm_i915_private *dev_priv,
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struct intel_shared_dpll *pll);
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/**
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* @enable:
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*
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* Hook for enabling the pll, called from intel_enable_shared_dpll()
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* if the pll is not already enabled.
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*/
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void (*enable)(struct drm_i915_private *dev_priv,
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struct intel_shared_dpll *pll);
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/**
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* @disable:
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*
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* Hook for disabling the pll, called from intel_disable_shared_dpll()
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* only when it is safe to disable the pll, i.e., there are no more
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* tracked users for it.
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*/
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void (*disable)(struct drm_i915_private *dev_priv,
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struct intel_shared_dpll *pll);
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/**
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* @get_hw_state:
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*
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* Hook for reading the values currently programmed to the DPLL
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* registers. This is used for initial hw state readout and state
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* verification after a mode set.
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*/
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bool (*get_hw_state)(struct drm_i915_private *dev_priv,
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struct intel_shared_dpll *pll,
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struct intel_dpll_hw_state *hw_state);
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};
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/**
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* struct dpll_info - display PLL platform specific info
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*/
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struct dpll_info {
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/**
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* @name: DPLL name; used for logging
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*/
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const char *name;
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/**
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* @funcs: platform specific hooks
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*/
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const struct intel_shared_dpll_funcs *funcs;
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/**
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* @id: unique indentifier for this DPLL; should match the index in the
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* dev_priv->shared_dplls array
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*/
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enum intel_dpll_id id;
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#define INTEL_DPLL_ALWAYS_ON (1 << 0)
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/**
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* @flags:
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*
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* INTEL_DPLL_ALWAYS_ON
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* Inform the state checker that the DPLL is kept enabled even if
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* not in use by any CRTC.
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*/
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uint32_t flags;
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};
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/**
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* struct intel_shared_dpll - display PLL with tracked state and users
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*/
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struct intel_shared_dpll {
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/**
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* @state:
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*
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* Store the state for the pll, including the its hw state
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* and CRTCs using it.
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*/
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struct intel_shared_dpll_state state;
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/**
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* @active_mask: mask of active CRTCs (i.e. DPMS on) using this DPLL
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*/
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unsigned active_mask;
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/**
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* @on: is the PLL actually active? Disabled during modeset
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*/
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bool on;
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/**
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* @info: platform specific info
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*/
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const struct dpll_info *info;
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};
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#define SKL_DPLL0 0
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#define SKL_DPLL1 1
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#define SKL_DPLL2 2
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#define SKL_DPLL3 3
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/* shared dpll functions */
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struct intel_shared_dpll *
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intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
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enum intel_dpll_id id);
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enum intel_dpll_id
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intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
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struct intel_shared_dpll *pll);
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void assert_shared_dpll(struct drm_i915_private *dev_priv,
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struct intel_shared_dpll *pll,
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bool state);
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#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
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#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
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struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
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struct intel_crtc_state *state,
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struct intel_encoder *encoder);
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void intel_release_shared_dpll(struct intel_shared_dpll *dpll,
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struct intel_crtc *crtc,
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struct drm_atomic_state *state);
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void intel_prepare_shared_dpll(struct intel_crtc *crtc);
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void intel_enable_shared_dpll(struct intel_crtc *crtc);
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void intel_disable_shared_dpll(struct intel_crtc *crtc);
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void intel_shared_dpll_swap_state(struct drm_atomic_state *state);
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void intel_shared_dpll_init(struct drm_device *dev);
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void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
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struct intel_dpll_hw_state *hw_state);
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int icl_calc_dp_combo_pll_link(struct drm_i915_private *dev_priv,
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uint32_t pll_id);
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#endif /* _INTEL_DPLL_MGR_H_ */
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