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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 DPLL_ID_PRIVATE = -1, /* non-shared dpll in use */
45 /* real shared dpll ids must be >= 0 */
46 DPLL_ID_PCH_PLL_A = 0,
47 DPLL_ID_PCH_PLL_B = 1,
52 DPLL_ID_LCPLL_810 = 3,
53 DPLL_ID_LCPLL_1350 = 4,
54 DPLL_ID_LCPLL_2700 = 5,
57 DPLL_ID_SKL_DPLL0 = 0,
58 DPLL_ID_SKL_DPLL1 = 1,
59 DPLL_ID_SKL_DPLL2 = 2,
60 DPLL_ID_SKL_DPLL3 = 3,
62 #define I915_NUM_PLLS 6
64 /** Inform the state checker that the DPLL is kept enabled even if not
67 #define INTEL_DPLL_ALWAYS_ON (1 << 0)
69 struct intel_dpll_hw_state {
82 * DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
83 * lower part of ctrl1 and they get shifted into position when writing
84 * the register. This allows us to easily compare the state to share
88 /* HDMI only, 0 when used for DP */
89 uint32_t cfgcr1, cfgcr2;
92 uint32_t ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10,
96 struct intel_shared_dpll_config {
97 unsigned crtc_mask; /* mask of CRTCs sharing this PLL */
98 struct intel_dpll_hw_state hw_state;
101 struct intel_shared_dpll_funcs {
102 /* The mode_set hook is optional and should be used together with the
103 * intel_prepare_shared_dpll function. */
104 void (*mode_set)(struct drm_i915_private *dev_priv,
105 struct intel_shared_dpll *pll);
106 void (*enable)(struct drm_i915_private *dev_priv,
107 struct intel_shared_dpll *pll);
108 void (*disable)(struct drm_i915_private *dev_priv,
109 struct intel_shared_dpll *pll);
110 bool (*get_hw_state)(struct drm_i915_private *dev_priv,
111 struct intel_shared_dpll *pll,
112 struct intel_dpll_hw_state *hw_state);
115 struct intel_shared_dpll {
116 struct intel_shared_dpll_config config;
118 unsigned active_mask; /* mask of active CRTCs (i.e. DPMS on) */
119 bool on; /* is the PLL actually active? Disabled during modeset */
121 /* should match the index in the dev_priv->shared_dplls array */
122 enum intel_dpll_id id;
124 struct intel_shared_dpll_funcs funcs;
134 /* shared dpll functions */
135 struct intel_shared_dpll *
136 intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
137 enum intel_dpll_id id);
139 intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
140 struct intel_shared_dpll *pll);
142 intel_shared_dpll_config_get(struct intel_shared_dpll_config *config,
143 struct intel_shared_dpll *pll,
144 struct intel_crtc *crtc);
146 intel_shared_dpll_config_put(struct intel_shared_dpll_config *config,
147 struct intel_shared_dpll *pll,
148 struct intel_crtc *crtc);
149 void assert_shared_dpll(struct drm_i915_private *dev_priv,
150 struct intel_shared_dpll *pll,
152 #define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
153 #define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
154 struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
155 struct intel_crtc_state *state,
156 struct intel_encoder *encoder);
157 void intel_prepare_shared_dpll(struct intel_crtc *crtc);
158 void intel_enable_shared_dpll(struct intel_crtc *crtc);
159 void intel_disable_shared_dpll(struct intel_crtc *crtc);
160 void intel_shared_dpll_commit(struct drm_atomic_state *state);
161 void intel_shared_dpll_init(struct drm_device *dev);
163 /* BXT dpll related functions */
164 bool bxt_ddi_dp_set_dpll_hw_state(int clock,
165 struct intel_dpll_hw_state *dpll_hw_state);
168 /* SKL dpll related functions */
169 bool skl_ddi_dp_set_dpll_hw_state(int clock,
170 struct intel_dpll_hw_state *dpll_hw_state);
171 struct intel_shared_dpll *skl_find_link_pll(struct drm_i915_private *dev_priv,
175 /* HSW dpll related functions */
176 struct intel_shared_dpll *hsw_ddi_dp_get_dpll(struct intel_encoder *encoder,
179 #endif /* _INTEL_DPLL_MGR_H_ */