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dw_hdmi.h revision 1.3 
      1 /* $NetBSD: dw_hdmi.h,v 1.3 2019/11/16 12:50:08 jmcneill 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/drmP.h>
     38 
     39 struct dwhdmi_softc;
     40 
     41 struct dwhdmi_connector {
     42 	struct drm_connector	base;
     43 	struct dwhdmi_softc	*sc;
     44 
     45 	bool			hdmi_monitor;
     46 	bool			monitor_audio;
     47 };
     48 
     49 struct dwhdmi_phy_config {
     50 	u_int			pixel_clock;
     51 	uint32_t		sym;
     52 	uint32_t		term;
     53 	uint32_t		vlev;
     54 };
     55 
     56 struct dwhdmi_mpll_config {
     57 	u_int			pixel_clock;
     58 	uint32_t		cpce;
     59 	uint32_t		gmp;
     60 	uint32_t		curr;
     61 };
     62 
     63 struct dwhdmi_softc {
     64 	device_t		sc_dev;
     65 	bus_space_tag_t		sc_bst;
     66 	bus_space_handle_t	sc_bsh;
     67 	u_int			sc_reg_width;
     68 	u_int			sc_flags;
     69 #define	DWHDMI_USE_INTERNAL_PHY	__BIT(0)
     70 
     71 	u_int			sc_phytype;
     72 	u_int			sc_version;
     73 
     74 	i2c_tag_t		sc_ic;
     75 	kmutex_t		sc_ic_lock;
     76 	struct i2c_controller	sc_ic_builtin;
     77 
     78 	struct audio_dai_device	sc_dai;
     79 
     80 	struct dwhdmi_connector	sc_connector;
     81 	struct drm_bridge	sc_bridge;
     82 
     83 	struct drm_display_mode	sc_curmode;
     84 
     85 	const struct dwhdmi_mpll_config *sc_mpll_config;
     86 	const struct dwhdmi_phy_config *sc_phy_config;
     87 
     88 	enum drm_connector_status (*sc_detect)(struct dwhdmi_softc *, bool);
     89 	void			(*sc_enable)(struct dwhdmi_softc *);
     90 	void			(*sc_disable)(struct dwhdmi_softc *);
     91 	void			(*sc_mode_set)(struct dwhdmi_softc *,
     92 					       struct drm_display_mode *,
     93 					       struct drm_display_mode *);
     94 };
     95 
     96 #define	to_dwhdmi_connector(x)	container_of(x, struct dwhdmi_connector, base)
     97 
     98 int		dwhdmi_attach(struct dwhdmi_softc *);
     99 int		dwhdmi_bind(struct dwhdmi_softc *, struct drm_encoder *);
    100 
    101 uint8_t		dwhdmi_read(struct dwhdmi_softc *, bus_size_t);
    102 void		dwhdmi_write(struct dwhdmi_softc *, bus_size_t, uint8_t);
    103 
    104 enum drm_connector_status dwhdmi_phy_detect(struct dwhdmi_softc *, bool);
    105 void		dwhdmi_phy_enable(struct dwhdmi_softc *);
    106 void		dwhdmi_phy_disable(struct dwhdmi_softc *);
    107 void		dwhdmi_phy_mode_set(struct dwhdmi_softc *,
    108 				    struct drm_display_mode *,
    109 				    struct drm_display_mode *);
    110 
    111 #endif /* !_DEV_IC_DWHDMI_H */
    112