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25 #ifndef _INTEL_DPLL_MGR_H_
26 #define _INTEL_DPLL_MGR_H_
28 #include <linux/types.h>
30 #include "intel_display.h"
32 /*FIXME: Move this to a more appropriate place. */
33 #define abs_diff(a, b) ({ \
34 typeof(a) __a = (a); \
35 typeof(b) __b = (b); \
36 (void) (&__a == &__b); \
37 __a > __b ? (__a - __b) : (__b - __a); })
39 struct drm_atomic_state;
41 struct drm_i915_private;
43 struct intel_crtc_state;
45 struct intel_shared_dpll;
48 * enum intel_dpll_id - possible DPLL ids
50 * Enumeration of possible IDs for a DPLL. Real shared dpll ids must be >= 0.
54 * @DPLL_ID_PRIVATE: non-shared dpll in use
59 * @DPLL_ID_PCH_PLL_A: DPLL A in ILK, SNB and IVB
61 DPLL_ID_PCH_PLL_A = 0,
63 * @DPLL_ID_PCH_PLL_B: DPLL B in ILK, SNB and IVB
65 DPLL_ID_PCH_PLL_B = 1,
69 * @DPLL_ID_WRPLL1: HSW and BDW WRPLL1
73 * @DPLL_ID_WRPLL2: HSW and BDW WRPLL2
77 * @DPLL_ID_SPLL: HSW and BDW SPLL
81 * @DPLL_ID_LCPLL_810: HSW and BDW 0.81 GHz LCPLL
83 DPLL_ID_LCPLL_810 = 3,
85 * @DPLL_ID_LCPLL_1350: HSW and BDW 1.35 GHz LCPLL
87 DPLL_ID_LCPLL_1350 = 4,
89 * @DPLL_ID_LCPLL_2700: HSW and BDW 2.7 GHz LCPLL
91 DPLL_ID_LCPLL_2700 = 5,
95 * @DPLL_ID_SKL_DPLL0: SKL and later DPLL0
97 DPLL_ID_SKL_DPLL0 = 0,
99 * @DPLL_ID_SKL_DPLL1: SKL and later DPLL1
101 DPLL_ID_SKL_DPLL1 = 1,
103 * @DPLL_ID_SKL_DPLL2: SKL and later DPLL2
105 DPLL_ID_SKL_DPLL2 = 2,
107 * @DPLL_ID_SKL_DPLL3: SKL and later DPLL3
109 DPLL_ID_SKL_DPLL3 = 3,
113 * @DPLL_ID_ICL_DPLL0: ICL combo PHY DPLL0
115 DPLL_ID_ICL_DPLL0 = 0,
117 * @DPLL_ID_ICL_DPLL1: ICL combo PHY DPLL1
119 DPLL_ID_ICL_DPLL1 = 1,
121 * @DPLL_ID_ICL_TBTPLL: ICL TBT PLL
123 DPLL_ID_ICL_TBTPLL = 2,
125 * @DPLL_ID_ICL_MGPLL1: ICL MG PLL 1 port 1 (C)
127 DPLL_ID_ICL_MGPLL1 = 3,
129 * @DPLL_ID_ICL_MGPLL2: ICL MG PLL 1 port 2 (D)
131 DPLL_ID_ICL_MGPLL2 = 4,
133 * @DPLL_ID_ICL_MGPLL3: ICL MG PLL 1 port 3 (E)
135 DPLL_ID_ICL_MGPLL3 = 5,
137 * @DPLL_ID_ICL_MGPLL4: ICL MG PLL 1 port 4 (F)
139 DPLL_ID_ICL_MGPLL4 = 6,
141 #define I915_NUM_PLLS 7
143 struct intel_dpll_hw_state {
156 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
157 * lower part of ctrl1 and they get shifted into position when writing
158 * the register. This allows us to easily compare the state to share
162 /* HDMI only, 0 when used for DP */
167 /* CNL also uses cfgcr1 */
170 u32 ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10, pcsdw12;
173 * ICL uses the following, already defined:
174 * u32 cfgcr0, cfgcr1;
177 u32 mg_clktop2_coreclkctl1;
178 u32 mg_clktop2_hsclkctl;
182 u32 mg_pll_frac_lock;
185 u32 mg_pll_tdc_coldst_bias;
186 u32 mg_pll_bias_mask;
187 u32 mg_pll_tdc_coldst_bias_mask;
191 * struct intel_shared_dpll_state - hold the DPLL atomic state
193 * This structure holds an atomic state for the DPLL, that can represent
194 * either its current state (in struct &intel_shared_dpll) or a desired
195 * future state which would be applied by an atomic mode set (stored in
196 * a struct &intel_atomic_state).
198 * See also intel_get_shared_dpll() and intel_release_shared_dpll().
200 struct intel_shared_dpll_state {
202 * @crtc_mask: mask of CRTC using this DPLL, active or not
207 * @hw_state: hardware configuration for the DPLL stored in
208 * struct &intel_dpll_hw_state.
210 struct intel_dpll_hw_state hw_state;
214 * struct intel_shared_dpll_funcs - platform specific hooks for managing DPLLs
216 struct intel_shared_dpll_funcs {
220 * Optional hook to perform operations prior to enabling the PLL.
221 * Called from intel_prepare_shared_dpll() function unless the PLL
222 * is already enabled.
224 void (*prepare)(struct drm_i915_private *dev_priv,
225 struct intel_shared_dpll *pll);
230 * Hook for enabling the pll, called from intel_enable_shared_dpll()
231 * if the pll is not already enabled.
233 void (*enable)(struct drm_i915_private *dev_priv,
234 struct intel_shared_dpll *pll);
239 * Hook for disabling the pll, called from intel_disable_shared_dpll()
240 * only when it is safe to disable the pll, i.e., there are no more
241 * tracked users for it.
243 void (*disable)(struct drm_i915_private *dev_priv,
244 struct intel_shared_dpll *pll);
249 * Hook for reading the values currently programmed to the DPLL
250 * registers. This is used for initial hw state readout and state
251 * verification after a mode set.
253 bool (*get_hw_state)(struct drm_i915_private *dev_priv,
254 struct intel_shared_dpll *pll,
255 struct intel_dpll_hw_state *hw_state);
259 * struct dpll_info - display PLL platform specific info
263 * @name: DPLL name; used for logging
268 * @funcs: platform specific hooks
270 const struct intel_shared_dpll_funcs *funcs;
273 * @id: unique indentifier for this DPLL; should match the index in the
274 * dev_priv->shared_dplls array
276 enum intel_dpll_id id;
278 #define INTEL_DPLL_ALWAYS_ON (1 << 0)
282 * INTEL_DPLL_ALWAYS_ON
283 * Inform the state checker that the DPLL is kept enabled even if
284 * not in use by any CRTC.
290 * struct intel_shared_dpll - display PLL with tracked state and users
292 struct intel_shared_dpll {
296 * Store the state for the pll, including its hw state
297 * and CRTCs using it.
299 struct intel_shared_dpll_state state;
302 * @active_mask: mask of active CRTCs (i.e. DPMS on) using this DPLL
304 unsigned active_mask;
307 * @on: is the PLL actually active? Disabled during modeset
312 * @info: platform specific info
314 const struct dpll_info *info;
322 /* shared dpll functions */
323 struct intel_shared_dpll *
324 intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
325 enum intel_dpll_id id);
327 intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
328 struct intel_shared_dpll *pll);
329 void assert_shared_dpll(struct drm_i915_private *dev_priv,
330 struct intel_shared_dpll *pll,
332 #define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
333 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
334 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc_state *state,
335 struct intel_encoder *encoder);
336 void intel_release_shared_dpll(struct intel_shared_dpll *dpll,
337 struct intel_crtc *crtc,
338 struct drm_atomic_state *state);
339 void intel_prepare_shared_dpll(const struct intel_crtc_state *crtc_state);
340 void intel_enable_shared_dpll(const struct intel_crtc_state *crtc_state);
341 void intel_disable_shared_dpll(const struct intel_crtc_state *crtc_state);
342 void intel_shared_dpll_swap_state(struct drm_atomic_state *state);
343 void intel_shared_dpll_init(struct drm_device *dev);
345 void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
346 const struct intel_dpll_hw_state *hw_state);
347 int cnl_hdmi_pll_ref_clock(struct drm_i915_private *dev_priv);
348 enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port);
349 bool intel_dpll_is_combophy(enum intel_dpll_id id);
351 #endif /* _INTEL_DPLL_MGR_H_ */