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25 #ifndef _INTEL_DPLL_MGR_H_
26 #define _INTEL_DPLL_MGR_H_
28 /*FIXME: Move this to a more appropriate place. */
29 #define abs_diff(a, b) ({ \
30 typeof(a) __a = (a); \
31 typeof(b) __b = (b); \
32 (void) (&__a == &__b); \
33 __a > __b ? (__a - __b) : (__b - __a); })
35 struct drm_i915_private;
37 struct intel_crtc_state;
40 struct intel_shared_dpll;
41 struct intel_dpll_mgr;
44 * enum intel_dpll_id - possible DPLL ids
46 * Enumeration of possible IDs for a DPLL. Real shared dpll ids must be >= 0.
50 * @DPLL_ID_PRIVATE: non-shared dpll in use
55 * @DPLL_ID_PCH_PLL_A: DPLL A in ILK, SNB and IVB
57 DPLL_ID_PCH_PLL_A = 0,
59 * @DPLL_ID_PCH_PLL_B: DPLL B in ILK, SNB and IVB
61 DPLL_ID_PCH_PLL_B = 1,
65 * @DPLL_ID_WRPLL1: HSW and BDW WRPLL1
69 * @DPLL_ID_WRPLL2: HSW and BDW WRPLL2
73 * @DPLL_ID_SPLL: HSW and BDW SPLL
77 * @DPLL_ID_LCPLL_810: HSW and BDW 0.81 GHz LCPLL
79 DPLL_ID_LCPLL_810 = 3,
81 * @DPLL_ID_LCPLL_1350: HSW and BDW 1.35 GHz LCPLL
83 DPLL_ID_LCPLL_1350 = 4,
85 * @DPLL_ID_LCPLL_2700: HSW and BDW 2.7 GHz LCPLL
87 DPLL_ID_LCPLL_2700 = 5,
91 * @DPLL_ID_SKL_DPLL0: SKL and later DPLL0
93 DPLL_ID_SKL_DPLL0 = 0,
95 * @DPLL_ID_SKL_DPLL1: SKL and later DPLL1
97 DPLL_ID_SKL_DPLL1 = 1,
99 * @DPLL_ID_SKL_DPLL2: SKL and later DPLL2
101 DPLL_ID_SKL_DPLL2 = 2,
103 * @DPLL_ID_SKL_DPLL3: SKL and later DPLL3
105 DPLL_ID_SKL_DPLL3 = 3,
109 * @DPLL_ID_ICL_DPLL0: ICL combo PHY DPLL0
111 DPLL_ID_ICL_DPLL0 = 0,
113 * @DPLL_ID_ICL_DPLL1: ICL combo PHY DPLL1
115 DPLL_ID_ICL_DPLL1 = 1,
117 * @DPLL_ID_ICL_TBTPLL: ICL TBT PLL
119 DPLL_ID_ICL_TBTPLL = 2,
121 * @DPLL_ID_ICL_MGPLL1: ICL MG PLL 1 port 1 (C)
123 DPLL_ID_ICL_MGPLL1 = 3,
125 * @DPLL_ID_ICL_MGPLL2: ICL MG PLL 1 port 2 (D)
127 DPLL_ID_ICL_MGPLL2 = 4,
129 * @DPLL_ID_ICL_MGPLL3: ICL MG PLL 1 port 3 (E)
131 DPLL_ID_ICL_MGPLL3 = 5,
133 * @DPLL_ID_ICL_MGPLL4: ICL MG PLL 1 port 4 (F)
135 DPLL_ID_ICL_MGPLL4 = 6,
137 #define I915_NUM_PLLS 7
139 struct intel_dpll_hw_state {
152 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
153 * lower part of ctrl1 and they get shifted into position when writing
154 * the register. This allows us to easily compare the state to share
158 /* HDMI only, 0 when used for DP */
159 uint32_t cfgcr1, cfgcr2;
163 /* CNL also uses cfgcr1 */
166 uint32_t ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10,
170 * ICL uses the following, already defined:
171 * uint32_t cfgcr0, cfgcr1;
173 uint32_t mg_refclkin_ctl;
174 uint32_t mg_clktop2_coreclkctl1;
175 uint32_t mg_clktop2_hsclkctl;
176 uint32_t mg_pll_div0;
177 uint32_t mg_pll_div1;
179 uint32_t mg_pll_frac_lock;
181 uint32_t mg_pll_bias;
182 uint32_t mg_pll_tdc_coldst_bias;
183 uint32_t mg_pll_bias_mask;
184 uint32_t mg_pll_tdc_coldst_bias_mask;
188 * struct intel_shared_dpll_state - hold the DPLL atomic state
190 * This structure holds an atomic state for the DPLL, that can represent
191 * either its current state (in struct &intel_shared_dpll) or a desired
192 * future state which would be applied by an atomic mode set (stored in
193 * a struct &intel_atomic_state).
195 * See also intel_get_shared_dpll() and intel_release_shared_dpll().
197 struct intel_shared_dpll_state {
199 * @crtc_mask: mask of CRTC using this DPLL, active or not
204 * @hw_state: hardware configuration for the DPLL stored in
205 * struct &intel_dpll_hw_state.
207 struct intel_dpll_hw_state hw_state;
211 * struct intel_shared_dpll_funcs - platform specific hooks for managing DPLLs
213 struct intel_shared_dpll_funcs {
217 * Optional hook to perform operations prior to enabling the PLL.
218 * Called from intel_prepare_shared_dpll() function unless the PLL
219 * is already enabled.
221 void (*prepare)(struct drm_i915_private *dev_priv,
222 struct intel_shared_dpll *pll);
227 * Hook for enabling the pll, called from intel_enable_shared_dpll()
228 * if the pll is not already enabled.
230 void (*enable)(struct drm_i915_private *dev_priv,
231 struct intel_shared_dpll *pll);
236 * Hook for disabling the pll, called from intel_disable_shared_dpll()
237 * only when it is safe to disable the pll, i.e., there are no more
238 * tracked users for it.
240 void (*disable)(struct drm_i915_private *dev_priv,
241 struct intel_shared_dpll *pll);
246 * Hook for reading the values currently programmed to the DPLL
247 * registers. This is used for initial hw state readout and state
248 * verification after a mode set.
250 bool (*get_hw_state)(struct drm_i915_private *dev_priv,
251 struct intel_shared_dpll *pll,
252 struct intel_dpll_hw_state *hw_state);
256 * struct dpll_info - display PLL platform specific info
260 * @name: DPLL name; used for logging
265 * @funcs: platform specific hooks
267 const struct intel_shared_dpll_funcs *funcs;
270 * @id: unique indentifier for this DPLL; should match the index in the
271 * dev_priv->shared_dplls array
273 enum intel_dpll_id id;
275 #define INTEL_DPLL_ALWAYS_ON (1 << 0)
279 * INTEL_DPLL_ALWAYS_ON
280 * Inform the state checker that the DPLL is kept enabled even if
281 * not in use by any CRTC.
287 * struct intel_shared_dpll - display PLL with tracked state and users
289 struct intel_shared_dpll {
293 * Store the state for the pll, including the its hw state
294 * and CRTCs using it.
296 struct intel_shared_dpll_state state;
299 * @active_mask: mask of active CRTCs (i.e. DPMS on) using this DPLL
301 unsigned active_mask;
304 * @on: is the PLL actually active? Disabled during modeset
309 * @info: platform specific info
311 const struct dpll_info *info;
319 /* shared dpll functions */
320 struct intel_shared_dpll *
321 intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
322 enum intel_dpll_id id);
324 intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
325 struct intel_shared_dpll *pll);
326 void assert_shared_dpll(struct drm_i915_private *dev_priv,
327 struct intel_shared_dpll *pll,
329 #define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
330 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
331 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
332 struct intel_crtc_state *state,
333 struct intel_encoder *encoder);
334 void intel_release_shared_dpll(struct intel_shared_dpll *dpll,
335 struct intel_crtc *crtc,
336 struct drm_atomic_state *state);
337 void intel_prepare_shared_dpll(struct intel_crtc *crtc);
338 void intel_enable_shared_dpll(struct intel_crtc *crtc);
339 void intel_disable_shared_dpll(struct intel_crtc *crtc);
340 void intel_shared_dpll_swap_state(struct drm_atomic_state *state);
341 void intel_shared_dpll_init(struct drm_device *dev);
343 void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
344 struct intel_dpll_hw_state *hw_state);
345 int icl_calc_dp_combo_pll_link(struct drm_i915_private *dev_priv,
348 #endif /* _INTEL_DPLL_MGR_H_ */