/*
* 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_
#include <linux/types.h>
#include "intel_display_power.h"
#include "intel_wakeref.h"
#define for_each_dpll(__display, __pll, __i) \
for ((__i) = 0 ; (__i) < (__display)->dpll.num_dpll && \
((__pll) = &(__display)->dpll.dplls[(__i)]) ; (__i)++)
enum tc_port;
struct drm_printer;
struct intel_atomic_state;
struct intel_crtc;
struct intel_crtc_state;
struct intel_dpll_funcs;
struct intel_encoder;
struct intel_shared_dpll;
/**
* enum intel_dpll_id - possible DPLL ids
*
* Enumeration of possible IDs for a DPLL . Real shared dpll ids must be > = 0 .
*/
enum intel_dpll_id {
/**
* @ DPLL_ID_PRIVATE : non - shared dpll in use
*/
DPLL_ID_PRIVATE = -1 ,
/**
* @ DPLL_ID_PCH_PLL_A : DPLL A in ILK , SNB and IVB
*/
DPLL_ID_PCH_PLL_A = 0 ,
/**
* @ DPLL_ID_PCH_PLL_B : DPLL B in ILK , SNB and IVB
*/
DPLL_ID_PCH_PLL_B = 1 ,
/**
* @ DPLL_ID_WRPLL1 : HSW and BDW WRPLL1
*/
DPLL_ID_WRPLL1 = 0 ,
/**
* @ DPLL_ID_WRPLL2 : HSW and BDW WRPLL2
*/
DPLL_ID_WRPLL2 = 1 ,
/**
* @ DPLL_ID_SPLL : HSW and BDW SPLL
*/
DPLL_ID_SPLL = 2 ,
/**
* @ DPLL_ID_LCPLL_810 : HSW and BDW 0 . 81 GHz LCPLL
*/
DPLL_ID_LCPLL_810 = 3 ,
/**
* @ DPLL_ID_LCPLL_1350 : HSW and BDW 1 . 35 GHz LCPLL
*/
DPLL_ID_LCPLL_1350 = 4 ,
/**
* @ DPLL_ID_LCPLL_2700 : HSW and BDW 2 . 7 GHz LCPLL
*/
DPLL_ID_LCPLL_2700 = 5 ,
/**
* @ DPLL_ID_SKL_DPLL0 : SKL and later DPLL0
*/
DPLL_ID_SKL_DPLL0 = 0 ,
/**
* @ DPLL_ID_SKL_DPLL1 : SKL and later DPLL1
*/
DPLL_ID_SKL_DPLL1 = 1 ,
/**
* @ DPLL_ID_SKL_DPLL2 : SKL and later DPLL2
*/
DPLL_ID_SKL_DPLL2 = 2 ,
/**
* @ DPLL_ID_SKL_DPLL3 : SKL and later DPLL3
*/
DPLL_ID_SKL_DPLL3 = 3 ,
/**
* @ DPLL_ID_ICL_DPLL0 : ICL / TGL combo PHY DPLL0
*/
DPLL_ID_ICL_DPLL0 = 0 ,
/**
* @ DPLL_ID_ICL_DPLL1 : ICL / TGL combo PHY DPLL1
*/
DPLL_ID_ICL_DPLL1 = 1 ,
/**
* @ DPLL_ID_EHL_DPLL4 : EHL combo PHY DPLL4
*/
DPLL_ID_EHL_DPLL4 = 2 ,
/**
* @ DPLL_ID_ICL_TBTPLL : ICL / TGL TBT PLL
*/
DPLL_ID_ICL_TBTPLL = 2 ,
/**
* @ DPLL_ID_ICL_MGPLL1 : ICL MG PLL 1 port 1 ( C ) ,
* TGL TC PLL 1 port 1 ( TC1 )
*/
DPLL_ID_ICL_MGPLL1 = 3 ,
/**
* @ DPLL_ID_ICL_MGPLL2 : ICL MG PLL 1 port 2 ( D )
* TGL TC PLL 1 port 2 ( TC2 )
*/
DPLL_ID_ICL_MGPLL2 = 4 ,
/**
* @ DPLL_ID_ICL_MGPLL3 : ICL MG PLL 1 port 3 ( E )
* TGL TC PLL 1 port 3 ( TC3 )
*/
DPLL_ID_ICL_MGPLL3 = 5 ,
/**
* @ DPLL_ID_ICL_MGPLL4 : ICL MG PLL 1 port 4 ( F )
* TGL TC PLL 1 port 4 ( TC4 )
*/
DPLL_ID_ICL_MGPLL4 = 6 ,
/**
* @ DPLL_ID_TGL_MGPLL5 : TGL TC PLL port 5 ( TC5 )
*/
DPLL_ID_TGL_MGPLL5 = 7 ,
/**
* @ DPLL_ID_TGL_MGPLL6 : TGL TC PLL port 6 ( TC6 )
*/
DPLL_ID_TGL_MGPLL6 = 8 ,
/**
* @ DPLL_ID_DG1_DPLL0 : DG1 combo PHY DPLL0
*/
DPLL_ID_DG1_DPLL0 = 0 ,
/**
* @ DPLL_ID_DG1_DPLL1 : DG1 combo PHY DPLL1
*/
DPLL_ID_DG1_DPLL1 = 1 ,
/**
* @ DPLL_ID_DG1_DPLL2 : DG1 combo PHY DPLL2
*/
DPLL_ID_DG1_DPLL2 = 2 ,
/**
* @ DPLL_ID_DG1_DPLL3 : DG1 combo PHY DPLL3
*/
DPLL_ID_DG1_DPLL3 = 3 ,
};
#define I915_NUM_PLLS 9
enum icl_port_dpll_id {
ICL_PORT_DPLL_DEFAULT,
ICL_PORT_DPLL_MG_PHY,
ICL_PORT_DPLL_COUNT,
};
struct i9xx_dpll_hw_state {
u32 dpll;
u32 dpll_md;
u32 fp0;
u32 fp1;
};
struct hsw_dpll_hw_state {
u32 wrpll;
u32 spll;
};
struct skl_dpll_hw_state {
/*
* 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 .
*/
u32 ctrl1;
/* HDMI only, 0 when used for DP */
u32 cfgcr1, cfgcr2;
};
struct bxt_dpll_hw_state {
u32 ebb0, ebb4, pll0, pll1, pll2, pll3, pll6, pll8, pll9, pll10, pcsdw12;
};
struct icl_dpll_hw_state {
u32 cfgcr0, cfgcr1;
/* tgl */
u32 div0;
u32 mg_refclkin_ctl;
u32 mg_clktop2_coreclkctl1;
u32 mg_clktop2_hsclkctl;
u32 mg_pll_div0;
u32 mg_pll_div1;
u32 mg_pll_lf;
u32 mg_pll_frac_lock;
u32 mg_pll_ssc;
u32 mg_pll_bias;
u32 mg_pll_tdc_coldst_bias;
u32 mg_pll_bias_mask;
u32 mg_pll_tdc_coldst_bias_mask;
};
struct intel_mpllb_state {
u32 clock; /* in KHz */
u32 ref_control;
u32 mpllb_cp;
u32 mpllb_div;
u32 mpllb_div2;
u32 mpllb_fracn1;
u32 mpllb_fracn2;
u32 mpllb_sscen;
u32 mpllb_sscstep;
};
struct intel_c10pll_state {
u32 clock; /* in KHz */
u8 tx;
u8 cmn;
u8 pll[20 ];
};
struct intel_c20pll_state {
u32 clock; /* in kHz */
u16 tx[3 ];
u16 cmn[4 ];
union {
u16 mplla[10 ];
u16 mpllb[11 ];
};
};
struct intel_cx0pll_state {
union {
struct intel_c10pll_state c10;
struct intel_c20pll_state c20;
};
bool ssc_enabled;
bool use_c10;
bool tbt_mode;
};
struct intel_dpll_hw_state {
union {
struct i9xx_dpll_hw_state i9xx;
struct hsw_dpll_hw_state hsw;
struct skl_dpll_hw_state skl;
struct bxt_dpll_hw_state bxt;
struct icl_dpll_hw_state icl;
struct intel_mpllb_state mpllb;
struct intel_cx0pll_state cx0pll;
};
};
/**
* struct intel_dpll_state - hold the DPLL atomic state
*
* This structure holds an atomic state for the DPLL , that can represent
* either its current state ( in struct & intel_shared_dpll ) or a desired
* future state which would be applied by an atomic mode set ( stored in
* a struct & intel_atomic_state ) .
*
* See also intel_reserve_shared_dplls ( ) and intel_release_shared_dplls ( ) .
*/
struct intel_dpll_state {
/**
* @ pipe_mask : mask of pipes using this DPLL , active or not
*/
u8 pipe_mask;
/**
* @ hw_state : hardware configuration for the DPLL stored in
* struct & intel_dpll_hw_state .
*/
struct intel_dpll_hw_state hw_state;
};
/**
* struct dpll_info - display PLL platform specific info
*/
struct dpll_info {
/**
* @ name : DPLL name ; used for logging
*/
const char *name;
/**
* @ funcs : platform specific hooks
*/
const struct intel_dpll_funcs *funcs;
/**
* @ id : unique identifier for this DPLL
*/
enum intel_dpll_id id;
/**
* @ power_domain : extra power domain required by the DPLL
*/
enum intel_display_power_domain power_domain;
/**
* @ always_on :
*
* Inform the state checker that the DPLL is kept enabled even if
* not in use by any CRTC .
*/
bool always_on;
/**
* @ is_alt_port_dpll :
*
* Inform the state checker that the DPLL can be used as a fallback
* ( for TC - > TBT fallback ) .
*/
bool is_alt_port_dpll;
};
/**
* struct intel_dpll - display PLL with tracked state and users
*/
struct intel_dpll {
/**
* @ state :
*
* Store the state for the pll , including its hw state
* and CRTCs using it .
*/
struct intel_dpll_state state;
/**
* @ index : index for atomic state
*/
u8 index;
/**
* @ active_mask : mask of active pipes ( i . e . DPMS on ) using this DPLL
*/
u8 active_mask;
/**
* @ on : is the PLL actually active ? Disabled during modeset
*/
bool on;
/**
* @ info : platform specific info
*/
const struct dpll_info *info;
/**
* @ wakeref : In some platforms a device - level runtime pm reference may
* need to be grabbed to disable DC states while this DPLL is enabled
*/
intel_wakeref_t wakeref;
};
#define SKL_DPLL0 0
#define SKL_DPLL1 1
#define SKL_DPLL2 2
#define SKL_DPLL3 3
/* dpll functions */
struct intel_dpll *
intel_get_dpll_by_id(struct intel_display *display,
enum intel_dpll_id id);
void assert_dpll(struct intel_display *display,
struct intel_dpll *pll,
bool state);
#define assert_dpll_enabled(d, p) assert_dpll(d, p, true )
#define assert_dpll_disabled(d, p) assert_dpll(d, p, false )
int intel_dpll_compute(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder);
int intel_dpll_reserve(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder);
void intel_dpll_release(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void intel_dpll_crtc_put(const struct intel_crtc *crtc,
const struct intel_dpll *pll,
struct intel_dpll_state *shared_dpll_state);
void icl_set_active_port_dpll(struct intel_crtc_state *crtc_state,
enum icl_port_dpll_id port_dpll_id);
void intel_dpll_update_active(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder);
int intel_dpll_get_freq(struct intel_display *display,
const struct intel_dpll *pll,
const struct intel_dpll_hw_state *dpll_hw_state);
bool intel_dpll_get_hw_state(struct intel_display *display,
struct intel_dpll *pll,
struct intel_dpll_hw_state *dpll_hw_state);
void intel_dpll_enable(const struct intel_crtc_state *crtc_state);
void intel_dpll_disable(const struct intel_crtc_state *crtc_state);
void intel_dpll_swap_state(struct intel_atomic_state *state);
void intel_dpll_init(struct intel_display *display);
void intel_dpll_update_ref_clks(struct intel_display *display);
void intel_dpll_readout_hw_state(struct intel_display *display);
void intel_dpll_sanitize_state(struct intel_display *display);
void intel_dpll_dump_hw_state(struct intel_display *display,
struct drm_printer *p,
const struct intel_dpll_hw_state *dpll_hw_state);
bool intel_dpll_compare_hw_state(struct intel_display *display,
const struct intel_dpll_hw_state *a,
const struct intel_dpll_hw_state *b);
enum intel_dpll_id icl_tc_port_to_pll_id(enum tc_port tc_port);
bool intel_dpll_is_combophy(enum intel_dpll_id id);
void intel_dpll_state_verify(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void intel_dpll_verify_disabled(struct intel_atomic_state *state);
#endif /* _INTEL_DPLL_MGR_H_ */
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