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/*
* Copyright © 2012-2016 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
#ifndef _INTEL_DPLL_MGR_H_
#define _INTEL_DPLL_MGR_H_
/*FIXME: Move this to a more appropriate place. */
#define abs_diff(a, b) ({ \
typeof(a) __a = (a); \
typeof(b) __b = (b); \
(void) (&__a == &__b); \
__a > __b ? (__a - __b) : (__b - __a); })
struct drm_i915_private;
struct intel_crtc;
struct intel_crtc_state;
struct intel_encoder;
struct intel_shared_dpll;
struct intel_dpll_mgr;
enum intel_dpll_id {
DPLL_ID_PRIVATE = -1, /* non-shared dpll in use */
/* real shared dpll ids must be >= 0 */
DPLL_ID_PCH_PLL_A = 0,
DPLL_ID_PCH_PLL_B = 1,
/* hsw/bdw */
DPLL_ID_WRPLL1 = 0,
DPLL_ID_WRPLL2 = 1,
DPLL_ID_SPLL = 2,
DPLL_ID_LCPLL_810 = 3,
DPLL_ID_LCPLL_1350 = 4,
DPLL_ID_LCPLL_2700 = 5,
/* skl */
DPLL_ID_SKL_DPLL0 = 0,
DPLL_ID_SKL_DPLL1 = 1,
DPLL_ID_SKL_DPLL2 = 2,
DPLL_ID_SKL_DPLL3 = 3,
};
#define I915_NUM_PLLS 6
/** Inform the state checker that the DPLL is kept enabled even if not
* in use by any crtc.
*/
#define INTEL_DPLL_ALWAYS_ON (1 << 0)
struct intel_dpll_hw_state {
/* i9xx, pch plls */
uint32_t dpll;
uint32_t dpll_md;
uint32_t fp0;
uint32_t fp1;
/* hsw, bdw */
uint32_t wrpll;
uint32_t spll;
/* skl */
/*
* DPLL_CTRL1 has 6 bits for each each this DPLL. We store those in
* lower part of ctrl1 and they get shifted into position when writing
* the register. This allows us to easily compare the state to share
* the DPLL.
*/
uint32_t ctrl1;
/* HDMI only, 0 when used for DP */
uint32_t cfgcr1, cfgcr2;
/* bxt */
uint32_t ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10,
pcsdw12;
};
struct intel_shared_dpll_config {
unsigned crtc_mask; /* mask of CRTCs sharing this PLL */
struct intel_dpll_hw_state hw_state;
};
struct intel_shared_dpll_funcs {
/* The mode_set hook is optional and should be used together with the
* intel_prepare_shared_dpll function. */
void (*mode_set)(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll);
void (*enable)(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll);
void (*disable)(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll);
bool (*get_hw_state)(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_dpll_hw_state *hw_state);
};
struct intel_shared_dpll {
struct intel_shared_dpll_config config;
unsigned active_mask; /* mask of active CRTCs (i.e. DPMS on) */
bool on; /* is the PLL actually active? Disabled during modeset */
const char *name;
/* should match the index in the dev_priv->shared_dplls array */
enum intel_dpll_id id;
struct intel_shared_dpll_funcs funcs;
uint32_t flags;
};
#define SKL_DPLL0 0
#define SKL_DPLL1 1
#define SKL_DPLL2 2
#define SKL_DPLL3 3
/* shared dpll functions */
struct intel_shared_dpll *
intel_get_shared_dpll_by_id(struct drm_i915_private *dev_priv,
enum intel_dpll_id id);
enum intel_dpll_id
intel_get_shared_dpll_id(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll);
void
intel_shared_dpll_config_get(struct intel_shared_dpll_config *config,
struct intel_shared_dpll *pll,
struct intel_crtc *crtc);
void
intel_shared_dpll_config_put(struct intel_shared_dpll_config *config,
struct intel_shared_dpll *pll,
struct intel_crtc *crtc);
void assert_shared_dpll(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
bool state);
#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
struct intel_shared_dpll *intel_get_shared_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *state,
struct intel_encoder *encoder);
void intel_prepare_shared_dpll(struct intel_crtc *crtc);
void intel_enable_shared_dpll(struct intel_crtc *crtc);
void intel_disable_shared_dpll(struct intel_crtc *crtc);
void intel_shared_dpll_commit(struct drm_atomic_state *state);
void intel_shared_dpll_init(struct drm_device *dev);
/* BXT dpll related functions */
bool bxt_ddi_dp_set_dpll_hw_state(int clock,
struct intel_dpll_hw_state *dpll_hw_state);
/* SKL dpll related functions */
bool skl_ddi_dp_set_dpll_hw_state(int clock,
struct intel_dpll_hw_state *dpll_hw_state);
struct intel_shared_dpll *skl_find_link_pll(struct drm_i915_private *dev_priv,
int clock);
/* HSW dpll related functions */
struct intel_shared_dpll *hsw_ddi_dp_get_dpll(struct intel_encoder *encoder,
int clock);
#endif /* _INTEL_DPLL_MGR_H_ */
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