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      1 /* $NetBSD: dw_hdmi.h,v 1.8 2021/12/19 11:01:11 riastradh Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2019 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _DEV_IC_DWHDMI_H
     30 #define _DEV_IC_DWHDMI_H
     31 
     32 #include <dev/i2c/i2cvar.h>
     33 #include <dev/i2c/ddcreg.h>
     34 
     35 #include <dev/audio/audio_dai.h>
     36 
     37 #include <drm/drm_bridge.h>
     38 #include <drm/drm_connector.h>
     39 #include <drm/drm_drv.h>
     40 #include <drm/drm_modes.h>
     41 
     42 struct dwhdmi_softc;
     43 
     44 struct dwhdmi_connector {
     45 	struct drm_connector	base;
     46 	struct dwhdmi_softc	*sc;
     47 
     48 	bool			hdmi_monitor;
     49 	bool			monitor_audio;
     50 };
     51 
     52 struct dwhdmi_phy_config {
     53 	u_int			pixel_clock;
     54 	uint32_t		sym;
     55 	uint32_t		term;
     56 	uint32_t		vlev;
     57 };
     58 
     59 struct dwhdmi_mpll_config {
     60 	u_int			pixel_clock;
     61 	uint32_t		cpce;
     62 	uint32_t		gmp;
     63 	uint32_t		curr;
     64 };
     65 
     66 struct dwhdmi_softc {
     67 	device_t		sc_dev;
     68 	bus_space_tag_t		sc_bst;
     69 	bus_space_handle_t	sc_bsh;
     70 	u_int			sc_reg_width;
     71 	u_int			sc_flags;
     72 #define	DWHDMI_USE_INTERNAL_PHY	__BIT(0)
     73 	u_int			sc_scl_hcnt;
     74 	u_int			sc_scl_lcnt;
     75 
     76 	u_int			sc_phytype;
     77 	u_int			sc_version;
     78 
     79 	i2c_tag_t		sc_ic;
     80 	struct i2c_controller	sc_ic_builtin;
     81 
     82 	struct audio_dai_device	sc_dai;
     83 	uint8_t			sc_swvol;
     84 
     85 	struct dwhdmi_connector	sc_connector;
     86 	struct drm_bridge	sc_bridge;
     87 
     88 	struct drm_display_mode	sc_curmode;
     89 
     90 	const struct dwhdmi_mpll_config *sc_mpll_config;
     91 	const struct dwhdmi_phy_config *sc_phy_config;
     92 
     93 	enum drm_connector_status (*sc_detect)(struct dwhdmi_softc *, bool);
     94 	void			(*sc_enable)(struct dwhdmi_softc *);
     95 	void			(*sc_disable)(struct dwhdmi_softc *);
     96 	void			(*sc_mode_set)(struct dwhdmi_softc *,
     97 					       const struct drm_display_mode *,
     98 					       const struct drm_display_mode *);
     99 };
    100 
    101 #define	to_dwhdmi_connector(x)	container_of(x, struct dwhdmi_connector, base)
    102 
    103 int		dwhdmi_attach(struct dwhdmi_softc *);
    104 int		dwhdmi_bind(struct dwhdmi_softc *, struct drm_encoder *);
    105 
    106 uint8_t		dwhdmi_read(struct dwhdmi_softc *, bus_size_t);
    107 void		dwhdmi_write(struct dwhdmi_softc *, bus_size_t, uint8_t);
    108 
    109 enum drm_connector_status dwhdmi_phy_detect(struct dwhdmi_softc *, bool);
    110 void		dwhdmi_phy_enable(struct dwhdmi_softc *);
    111 void		dwhdmi_phy_disable(struct dwhdmi_softc *);
    112 void		dwhdmi_phy_mode_set(struct dwhdmi_softc *,
    113 				    const struct drm_display_mode *,
    114 				    const struct drm_display_mode *);
    115 
    116 #endif /* !_DEV_IC_DWHDMI_H */
    117