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acpi_display.c revision 1.16.16.1
      1  1.16.16.1    martin /*	$NetBSD: acpi_display.c,v 1.16.16.1 2020/04/29 13:36:57 martin Exp $	*/
      2        1.1    gsutre 
      3        1.1    gsutre /*-
      4        1.1    gsutre  * Copyright (c) 2010 The NetBSD Foundation, Inc.
      5        1.1    gsutre  * All rights reserved.
      6        1.1    gsutre  *
      7        1.1    gsutre  * This code is derived from software contributed to The NetBSD Foundation
      8        1.1    gsutre  * by Gregoire Sutre.
      9        1.1    gsutre  *
     10        1.1    gsutre  * Redistribution and use in source and binary forms, with or without
     11        1.1    gsutre  * modification, are permitted provided that the following conditions
     12        1.1    gsutre  * are met:
     13        1.1    gsutre  * 1. Redistributions of source code must retain the above copyright
     14        1.1    gsutre  *    notice, this list of conditions and the following disclaimer.
     15        1.1    gsutre  * 2. Redistributions in binary form must reproduce the above copyright
     16        1.1    gsutre  *    notice, this list of conditions and the following disclaimer in the
     17        1.1    gsutre  *    documentation and/or other materials provided with the distribution.
     18        1.1    gsutre  *
     19        1.1    gsutre  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20        1.1    gsutre  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21        1.1    gsutre  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22        1.1    gsutre  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23        1.1    gsutre  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24        1.1    gsutre  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25        1.1    gsutre  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26        1.1    gsutre  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27        1.1    gsutre  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28        1.1    gsutre  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29        1.1    gsutre  * POSSIBILITY OF SUCH DAMAGE.
     30        1.1    gsutre  */
     31        1.1    gsutre 
     32        1.1    gsutre /*
     33        1.1    gsutre  * ACPI Display Adapter Driver.
     34        1.1    gsutre  *
     35        1.1    gsutre  * Appendix B of the ACPI specification presents ACPI extensions for display
     36        1.1    gsutre  * adapters.  Systems containing a built-in display adapter are required to
     37        1.1    gsutre  * implement these extensions (in their ACPI BIOS).  This driver uses these
     38        1.1    gsutre  * extensions to provide generic support for brightness control and display
     39        1.1    gsutre  * switching.
     40        1.1    gsutre  *
     41        1.1    gsutre  * If brightness control methods are absent or non-functional, ACPI brightness
     42        1.1    gsutre  * notifications are relayed to the PMF framework.
     43        1.1    gsutre  *
     44        1.1    gsutre  * This driver sets the BIOS switch policy (_DOS method) as follows:
     45        1.1    gsutre  * - The BIOS should automatically switch the active display output, with no
     46        1.1    gsutre  *   interaction required on the OS part.
     47        1.1    gsutre  * - The BIOS should not automatically control the brightness levels.
     48        1.1    gsutre  *
     49        1.1    gsutre  * Brightness and BIOS switch policy can be adjusted from userland, via the
     50        1.1    gsutre  * sysctl variables acpivga<n>.policy and acpiout<n>.brightness under hw.acpi.
     51        1.1    gsutre  */
     52        1.1    gsutre 
     53        1.1    gsutre /*
     54        1.1    gsutre  * The driver uses mutex(9) protection since changes to the hardware/software
     55        1.1    gsutre  * state may be initiated both by the BIOS (ACPI notifications) and by the user
     56        1.1    gsutre  * (sysctl).  The ACPI display adapter's mutex is shared with all ACPI display
     57        1.1    gsutre  * output devices attached to it.
     58        1.1    gsutre  *
     59        1.1    gsutre  * The mutex only prevents undesired interleavings of ACPI notify handlers,
     60        1.1    gsutre  * sysctl callbacks, and pmf(9) suspend/resume routines.  Race conditions with
     61        1.1    gsutre  * autoconf(9) detachment routines could, in theory, still occur.
     62        1.1    gsutre  *
     63        1.1    gsutre  * The array of connected output devices (sc_odinfo) is, after attachment, only
     64        1.1    gsutre  * used in ACPI notify handler callbacks.  Since two such callbacks cannot be
     65        1.1    gsutre  * running simultaneously, this information does not need protection.
     66        1.1    gsutre  */
     67        1.1    gsutre 
     68        1.1    gsutre #include <sys/cdefs.h>
     69  1.16.16.1    martin __KERNEL_RCSID(0, "$NetBSD: acpi_display.c,v 1.16.16.1 2020/04/29 13:36:57 martin Exp $");
     70        1.1    gsutre 
     71        1.1    gsutre #include <sys/param.h>
     72        1.1    gsutre #include <sys/device.h>
     73        1.1    gsutre #include <sys/kmem.h>
     74        1.2    jruoho #include <sys/module.h>
     75        1.1    gsutre #include <sys/mutex.h>
     76        1.1    gsutre #include <sys/sysctl.h>
     77        1.1    gsutre #include <sys/systm.h>
     78        1.1    gsutre 
     79        1.1    gsutre #include <dev/pci/pcireg.h>
     80        1.1    gsutre #include <dev/pci/pcidevs.h>
     81        1.1    gsutre 
     82        1.1    gsutre #include <dev/acpi/acpireg.h>
     83        1.1    gsutre #include <dev/acpi/acpivar.h>
     84        1.1    gsutre 
     85        1.1    gsutre #define _COMPONENT		ACPI_DISPLAY_COMPONENT
     86        1.1    gsutre ACPI_MODULE_NAME		("acpi_display")
     87        1.1    gsutre 
     88        1.1    gsutre /* Notifications specific to display adapter devices (ACPI 4.0a, Sec. B.5). */
     89        1.1    gsutre #define ACPI_NOTIFY_CycleOutputDevice			0x80
     90        1.1    gsutre #define ACPI_NOTIFY_OutputDeviceStatusChange		0x81
     91        1.1    gsutre #define ACPI_NOTIFY_CycleDisplayOutputHotkeyPressed	0x82
     92        1.1    gsutre #define ACPI_NOTIFY_NextDisplayOutputHotkeyPressed	0x83
     93        1.1    gsutre #define ACPI_NOTIFY_PreviousDisplayOutputHotkeyPressed	0x84
     94        1.1    gsutre 
     95        1.1    gsutre /* Notifications specific to display output devices (ACPI 4.0a, Sec. B.7). */
     96        1.1    gsutre #define ACPI_NOTIFY_CycleBrightness			0x85
     97        1.1    gsutre #define ACPI_NOTIFY_IncreaseBrightness			0x86
     98        1.1    gsutre #define ACPI_NOTIFY_DecreaseBrightness			0x87
     99        1.1    gsutre #define ACPI_NOTIFY_ZeroBrightness			0x88
    100        1.1    gsutre #define ACPI_NOTIFY_DisplayDeviceOff			0x89
    101        1.1    gsutre 
    102        1.1    gsutre /* Format of the BIOS switch policy set by _DOS (ACPI 4.0a, Sec. B.4.1). */
    103        1.1    gsutre typedef union acpidisp_bios_policy_t {
    104        1.1    gsutre 	uint8_t			raw;
    105        1.1    gsutre 	struct {
    106        1.1    gsutre 		uint8_t		output:2;
    107        1.1    gsutre 		uint8_t		brightness:1;
    108        1.1    gsutre 		uint8_t		reserved:5;
    109        1.1    gsutre 	} __packed		fmt;
    110        1.1    gsutre } acpidisp_bios_policy_t;
    111        1.1    gsutre 
    112        1.1    gsutre /* Default BIOS switch policy (ACPI 4.0a, Sec. B.4.1). */
    113        1.1    gsutre static const acpidisp_bios_policy_t acpidisp_default_bios_policy = {
    114        1.1    gsutre 	.raw = 0x1
    115        1.1    gsutre };
    116        1.1    gsutre 
    117        1.1    gsutre /* BIOS output switch policies (ACPI 4.0a, Sec. B.4.1). */
    118        1.1    gsutre #define ACPI_DISP_POLICY_OUTPUT_NORMAL		0x0
    119        1.1    gsutre #define ACPI_DISP_POLICY_OUTPUT_AUTO		0x1
    120        1.1    gsutre #define ACPI_DISP_POLICY_OUTPUT_LOCKED		0x2
    121        1.1    gsutre #define ACPI_DISP_POLICY_OUTPUT_HOTKEY		0x3
    122        1.1    gsutre 
    123        1.1    gsutre /* BIOS brightness switch policies (ACPI 4.0a, Sec. B.4.1). */
    124        1.1    gsutre #define ACPI_DISP_POLICY_BRIGHTNESS_AUTO	0x0
    125        1.1    gsutre #define ACPI_DISP_POLICY_BRIGHTNESS_NORMAL	0x1
    126        1.1    gsutre 
    127        1.1    gsutre /* Format of output device attributes (ACPI 4.0a, Table B-2). */
    128        1.1    gsutre typedef union acpidisp_od_attrs_t {
    129        1.1    gsutre 	uint16_t		device_id;
    130        1.1    gsutre 	uint32_t		raw;
    131        1.1    gsutre 	struct {
    132        1.1    gsutre 		uint8_t		index:4;
    133        1.1    gsutre 		uint8_t		port:4;
    134        1.1    gsutre 		uint8_t		type:4;
    135        1.1    gsutre 		uint8_t		vendor_specific:4;
    136        1.1    gsutre 		uint8_t		bios_detect:1;
    137        1.1    gsutre 		uint8_t		non_vga:1;
    138        1.1    gsutre 		uint8_t		head_id:3;
    139        1.1    gsutre 		uint16_t	reserved:10;
    140        1.1    gsutre 		uint8_t		device_id_scheme:1;
    141        1.1    gsutre 	} __packed		fmt;
    142        1.1    gsutre } acpidisp_od_attrs_t;
    143        1.1    gsutre 
    144        1.1    gsutre /* Common legacy output device IDs (ACPI 2.0c, Table B-3). */
    145        1.1    gsutre #define ACPI_DISP_OUT_LEGACY_DEVID_MONITOR	0x0100
    146        1.1    gsutre #define ACPI_DISP_OUT_LEGACY_DEVID_PANEL	0x0110
    147        1.1    gsutre #define ACPI_DISP_OUT_LEGACY_DEVID_TV		0x0200
    148        1.1    gsutre 
    149        1.1    gsutre /* Output device display types (ACPI 4.0a, Table B-2). */
    150        1.1    gsutre #define ACPI_DISP_OUT_ATTR_TYPE_OTHER		0x0
    151        1.1    gsutre #define ACPI_DISP_OUT_ATTR_TYPE_VGA		0x1
    152        1.1    gsutre #define ACPI_DISP_OUT_ATTR_TYPE_TV		0x2
    153        1.1    gsutre #define ACPI_DISP_OUT_ATTR_TYPE_EXTDIG		0x3
    154        1.1    gsutre #define ACPI_DISP_OUT_ATTR_TYPE_INTDFP		0x4
    155        1.1    gsutre 
    156        1.1    gsutre /* Format of output device status (ACPI 4.0a, Table B-4). */
    157        1.1    gsutre typedef union acpidisp_od_status_t {
    158        1.1    gsutre 	uint32_t		raw;
    159        1.1    gsutre 	struct {
    160        1.1    gsutre 		uint8_t		exists:1;
    161        1.1    gsutre 		uint8_t		activated:1;
    162        1.1    gsutre 		uint8_t		ready:1;
    163        1.1    gsutre 		uint8_t		not_defective:1;
    164        1.1    gsutre 		uint8_t		attached:1;
    165        1.1    gsutre 		uint32_t	reserved:27;
    166        1.1    gsutre 	} __packed		fmt;
    167        1.1    gsutre } acpidisp_od_status_t;
    168        1.1    gsutre 
    169        1.1    gsutre /* Format of output device state (ACPI 4.0a, Table B-6). */
    170        1.1    gsutre typedef union acpidisp_od_state_t {
    171        1.1    gsutre 	uint32_t		raw;
    172        1.1    gsutre 	struct {
    173        1.1    gsutre 		uint8_t		active:1;
    174        1.1    gsutre 		uint32_t	reserved:29;
    175        1.1    gsutre 		uint8_t		no_switch:1;
    176        1.1    gsutre 		uint8_t		commit:1;
    177        1.1    gsutre 	} __packed		fmt;
    178        1.1    gsutre } acpidisp_od_state_t;
    179        1.1    gsutre 
    180        1.1    gsutre /*
    181        1.1    gsutre  * acpidisp_outdev:
    182        1.1    gsutre  *
    183        1.1    gsutre  *	Description of an ACPI display output device.  This structure groups
    184        1.1    gsutre  *	together:
    185        1.1    gsutre  *	- the output device attributes, given in the display adapter's _DOD
    186        1.1    gsutre  *	  method (ACPI 4.0a, Sec. B.4.2).
    187        1.1    gsutre  *	- the corresponding instance of the acpiout driver (if any).
    188        1.1    gsutre  */
    189        1.1    gsutre struct acpidisp_outdev {
    190        1.1    gsutre 	acpidisp_od_attrs_t	 od_attrs;	/* Attributes */
    191        1.1    gsutre 	device_t		 od_device;	/* Matching base device */
    192        1.1    gsutre };
    193        1.1    gsutre 
    194        1.1    gsutre /*
    195        1.1    gsutre  * acpidisp_odinfo:
    196        1.1    gsutre  *
    197        1.1    gsutre  *	Information on connected output devices (ACPI 4.0a, Sec. B.4.2).  This
    198        1.1    gsutre  *	structure enumerates all devices (_DOD package) connected to a display
    199        1.1    gsutre  *	adapter.  Currently, this information is only used for display output
    200        1.1    gsutre  *	switching via hotkey.
    201        1.1    gsutre  *
    202        1.1    gsutre  * Invariants (after initialization):
    203        1.1    gsutre  *
    204        1.1    gsutre  *	(oi_dev != NULL) && (oi_dev_count > 0)
    205        1.1    gsutre  */
    206        1.1    gsutre struct acpidisp_odinfo {
    207        1.1    gsutre 	struct acpidisp_outdev	*oi_dev;	/* Array of output devices */
    208        1.1    gsutre 	uint32_t		 oi_dev_count;	/* Number of output devices */
    209        1.1    gsutre };
    210        1.1    gsutre 
    211        1.1    gsutre /*
    212        1.1    gsutre  * acpidisp_vga_softc:
    213        1.1    gsutre  *
    214        1.1    gsutre  *	Software state of an ACPI display adapter.
    215        1.1    gsutre  *
    216        1.1    gsutre  * Invariants (after attachment):
    217        1.1    gsutre  *
    218        1.1    gsutre  *	((sc_caps & ACPI_DISP_VGA_CAP__DOD) == 0) => (sc_odinfo == NULL)
    219        1.1    gsutre  */
    220        1.1    gsutre struct acpidisp_vga_softc {
    221        1.1    gsutre 	device_t		 sc_dev;	/* Base device info */
    222        1.1    gsutre 	struct acpi_devnode	*sc_node;	/* ACPI device node */
    223        1.1    gsutre 	struct sysctllog	*sc_log;	/* Sysctl log */
    224        1.1    gsutre 	kmutex_t		 sc_mtx;	/* Mutex (shared w/ outputs) */
    225        1.1    gsutre 	uint16_t		 sc_caps;	/* Capabilities (methods) */
    226        1.1    gsutre 	acpidisp_bios_policy_t	 sc_policy;	/* BIOS switch policy (_DOS) */
    227        1.1    gsutre 	struct acpidisp_odinfo	*sc_odinfo;	/* Connected output devices */
    228        1.1    gsutre };
    229        1.1    gsutre 
    230        1.1    gsutre /*
    231        1.1    gsutre  * ACPI display adapter capabilities (methods).
    232        1.1    gsutre  */
    233        1.1    gsutre #define ACPI_DISP_VGA_CAP__DOS	__BIT(0)
    234        1.1    gsutre #define ACPI_DISP_VGA_CAP__DOD	__BIT(1)
    235        1.1    gsutre #define ACPI_DISP_VGA_CAP__ROM	__BIT(2)
    236        1.1    gsutre #define ACPI_DISP_VGA_CAP__GPD	__BIT(3)
    237        1.1    gsutre #define ACPI_DISP_VGA_CAP__SPD	__BIT(4)
    238        1.1    gsutre #define ACPI_DISP_VGA_CAP__VPO	__BIT(5)
    239        1.1    gsutre 
    240        1.1    gsutre /*
    241        1.1    gsutre  * acpidisp_acpivga_attach_args:
    242        1.1    gsutre  *
    243        1.1    gsutre  *	Attachment structure for the acpivga interface.  Used to attach display
    244        1.1    gsutre  *	output devices under a display adapter.
    245        1.1    gsutre  */
    246        1.1    gsutre struct acpidisp_acpivga_attach_args {
    247        1.1    gsutre 	struct acpi_devnode	*aa_node;	/* ACPI device node */
    248        1.1    gsutre 	kmutex_t		*aa_mtx;	/* Shared mutex */
    249        1.1    gsutre };
    250        1.1    gsutre 
    251        1.1    gsutre /*
    252        1.1    gsutre  * acpidisp_brctl:
    253        1.1    gsutre  *
    254        1.1    gsutre  *	Brightness control (ACPI 4.0a, Sec. B.6.2 to B.6.4).  This structure
    255        1.1    gsutre  *	contains the supported brightness levels (_BCL package) and the current
    256        1.1    gsutre  *	level.  Following Windows 7 brightness control, we ignore the fullpower
    257        1.1    gsutre  *	and battery levels (as it simplifies the code).
    258        1.1    gsutre  *
    259        1.1    gsutre  *	The array bc_level is sorted in strictly ascending order.
    260        1.1    gsutre  *
    261        1.1    gsutre  * Invariants (after initialization):
    262        1.1    gsutre  *
    263        1.1    gsutre  *	(bc_level != NULL) && (bc_level_count > 0)
    264        1.1    gsutre  */
    265        1.1    gsutre struct acpidisp_brctl {
    266        1.1    gsutre 	uint8_t		*bc_level;		/* Array of levels */
    267        1.1    gsutre 	uint16_t	 bc_level_count;	/* Number of levels */
    268        1.1    gsutre 	uint8_t		 bc_current;		/* Current level */
    269        1.1    gsutre };
    270        1.1    gsutre 
    271        1.1    gsutre /*
    272        1.1    gsutre  * Minimum brightness increment/decrement in response to increase/decrease
    273        1.1    gsutre  * brightness hotkey notifications.  Must be strictly positive.
    274        1.1    gsutre  */
    275        1.1    gsutre #define ACPI_DISP_BRCTL_STEP	5
    276        1.1    gsutre 
    277        1.1    gsutre /*
    278        1.1    gsutre  * acpidisp_out_softc:
    279        1.1    gsutre  *
    280        1.1    gsutre  *	Software state of an ACPI display output device.
    281        1.1    gsutre  *
    282        1.1    gsutre  * Invariants (after attachment):
    283        1.1    gsutre  *
    284        1.1    gsutre  *	((sc_caps & ACPI_DISP_OUT_CAP__BCL) == 0) => (sc_brctl == NULL)
    285        1.1    gsutre  *	((sc_caps & ACPI_DISP_OUT_CAP__BCM) == 0) => (sc_brctl == NULL)
    286        1.1    gsutre  */
    287        1.1    gsutre struct acpidisp_out_softc {
    288        1.1    gsutre 	device_t		 sc_dev;	/* Base device info */
    289        1.1    gsutre 	struct acpi_devnode	*sc_node;	/* ACPI device node */
    290        1.1    gsutre 	struct sysctllog	*sc_log;	/* Sysctl log */
    291        1.1    gsutre 	kmutex_t		*sc_mtx;	/* Mutex (shared w/ adapter) */
    292        1.1    gsutre 	uint16_t		 sc_caps;	/* Capabilities (methods) */
    293        1.1    gsutre 	struct acpidisp_brctl	*sc_brctl;	/* Brightness control */
    294        1.1    gsutre };
    295        1.1    gsutre 
    296        1.1    gsutre /*
    297        1.1    gsutre  * ACPI display output device capabilities (methods).
    298        1.1    gsutre  */
    299        1.1    gsutre #define ACPI_DISP_OUT_CAP__BCL	__BIT(0)
    300        1.1    gsutre #define ACPI_DISP_OUT_CAP__BCM	__BIT(1)
    301        1.1    gsutre #define ACPI_DISP_OUT_CAP__BQC	__BIT(2)
    302        1.1    gsutre #define ACPI_DISP_OUT_CAP__DDC	__BIT(3)
    303        1.1    gsutre #define ACPI_DISP_OUT_CAP__DCS	__BIT(4)
    304        1.1    gsutre #define ACPI_DISP_OUT_CAP__DGS	__BIT(5)
    305        1.1    gsutre #define ACPI_DISP_OUT_CAP__DSS	__BIT(6)
    306        1.1    gsutre 
    307        1.1    gsutre static int	acpidisp_vga_match(device_t, cfdata_t, void *);
    308        1.1    gsutre static void	acpidisp_vga_attach(device_t, device_t, void *);
    309        1.1    gsutre static int	acpidisp_vga_detach(device_t, int);
    310        1.1    gsutre static void	acpidisp_vga_childdetached(device_t, device_t);
    311        1.1    gsutre 
    312        1.1    gsutre static void	acpidisp_vga_scan_outdevs(struct acpidisp_vga_softc *);
    313        1.1    gsutre static int	acpidisp_acpivga_print(void *, const char *);
    314        1.1    gsutre 
    315        1.1    gsutre static int	acpidisp_out_match(device_t, cfdata_t, void *);
    316        1.1    gsutre static void	acpidisp_out_attach(device_t, device_t, void *);
    317        1.1    gsutre static int	acpidisp_out_detach(device_t, int);
    318        1.1    gsutre 
    319        1.1    gsutre CFATTACH_DECL2_NEW(acpivga, sizeof(struct acpidisp_vga_softc),
    320        1.1    gsutre     acpidisp_vga_match, acpidisp_vga_attach, acpidisp_vga_detach, NULL,
    321        1.1    gsutre     NULL, acpidisp_vga_childdetached);
    322        1.1    gsutre 
    323        1.1    gsutre CFATTACH_DECL_NEW(acpiout, sizeof(struct acpidisp_out_softc),
    324        1.1    gsutre     acpidisp_out_match, acpidisp_out_attach, acpidisp_out_detach, NULL);
    325        1.1    gsutre 
    326        1.1    gsutre static bool	acpidisp_vga_resume(device_t, const pmf_qual_t *);
    327        1.1    gsutre static bool	acpidisp_out_suspend(device_t, const pmf_qual_t *);
    328        1.1    gsutre static bool	acpidisp_out_resume(device_t, const pmf_qual_t *);
    329        1.1    gsutre 
    330        1.1    gsutre static uint16_t	acpidisp_vga_capabilities(const struct acpi_devnode *);
    331        1.1    gsutre static uint16_t	acpidisp_out_capabilities(const struct acpi_devnode *);
    332        1.1    gsutre static void	acpidisp_vga_print_capabilities(device_t, uint16_t);
    333        1.1    gsutre static void	acpidisp_out_print_capabilities(device_t, uint16_t);
    334        1.1    gsutre 
    335        1.1    gsutre static void	acpidisp_vga_notify_handler(ACPI_HANDLE, uint32_t, void *);
    336        1.1    gsutre static void	acpidisp_out_notify_handler(ACPI_HANDLE, uint32_t, void *);
    337        1.1    gsutre 
    338        1.1    gsutre static void	acpidisp_vga_cycle_output_device_callback(void *);
    339        1.1    gsutre static void	acpidisp_vga_output_device_change_callback(void *);
    340        1.1    gsutre static void	acpidisp_out_increase_brightness_callback(void *);
    341        1.1    gsutre static void	acpidisp_out_decrease_brightness_callback(void *);
    342        1.1    gsutre static void	acpidisp_out_cycle_brightness_callback(void *);
    343        1.1    gsutre static void	acpidisp_out_zero_brightness_callback(void *);
    344        1.1    gsutre 
    345        1.1    gsutre static void	acpidisp_vga_sysctl_setup(struct acpidisp_vga_softc *);
    346        1.1    gsutre static void	acpidisp_out_sysctl_setup(struct acpidisp_out_softc *);
    347        1.4    gsutre #ifdef ACPI_DEBUG
    348        1.1    gsutre static int	acpidisp_vga_sysctl_policy(SYSCTLFN_PROTO);
    349        1.4    gsutre #endif
    350        1.4    gsutre static int	acpidisp_vga_sysctl_policy_output(SYSCTLFN_PROTO);
    351        1.1    gsutre #ifdef ACPI_DISP_SWITCH_SYSCTLS
    352        1.1    gsutre static int	acpidisp_out_sysctl_status(SYSCTLFN_PROTO);
    353        1.1    gsutre static int	acpidisp_out_sysctl_state(SYSCTLFN_PROTO);
    354        1.1    gsutre #endif
    355        1.1    gsutre static int	acpidisp_out_sysctl_brightness(SYSCTLFN_PROTO);
    356        1.1    gsutre 
    357        1.1    gsutre static struct acpidisp_odinfo *
    358        1.1    gsutre 		acpidisp_init_odinfo(const struct acpidisp_vga_softc *);
    359        1.1    gsutre static void	acpidisp_vga_bind_outdevs(struct acpidisp_vga_softc *);
    360        1.1    gsutre static struct acpidisp_brctl *
    361        1.1    gsutre 		acpidisp_init_brctl(const struct acpidisp_out_softc *);
    362        1.1    gsutre 
    363        1.1    gsutre static int	acpidisp_set_policy(const struct acpidisp_vga_softc *,
    364        1.1    gsutre 		    uint8_t);
    365        1.1    gsutre static int	acpidisp_get_status(const struct acpidisp_out_softc *,
    366        1.1    gsutre 		    uint32_t *);
    367        1.1    gsutre static int	acpidisp_get_state(const struct acpidisp_out_softc *,
    368        1.1    gsutre 		    uint32_t *);
    369        1.1    gsutre static int	acpidisp_set_state(const struct acpidisp_out_softc *,
    370        1.1    gsutre 		    uint32_t);
    371        1.1    gsutre static int	acpidisp_get_brightness(const struct acpidisp_out_softc *,
    372        1.1    gsutre 		    uint8_t *);
    373        1.1    gsutre static int	acpidisp_set_brightness(const struct acpidisp_out_softc *,
    374        1.1    gsutre 		    uint8_t);
    375        1.1    gsutre 
    376        1.1    gsutre static void	acpidisp_print_odinfo(device_t, const struct acpidisp_odinfo *);
    377        1.1    gsutre static void	acpidisp_print_brctl(device_t, const struct acpidisp_brctl *);
    378        1.1    gsutre static void	acpidisp_print_od_attrs(acpidisp_od_attrs_t);
    379        1.1    gsutre 
    380        1.1    gsutre static bool	acpidisp_has_method(ACPI_HANDLE, const char *,
    381        1.1    gsutre 		    ACPI_OBJECT_TYPE);
    382        1.1    gsutre static ACPI_STATUS
    383        1.1    gsutre 		acpidisp_eval_package(ACPI_HANDLE, const char *, ACPI_OBJECT **,
    384        1.1    gsutre 		    unsigned int);
    385        1.1    gsutre static void	acpidisp_array_search(const uint8_t *, uint16_t, int, uint8_t *,
    386        1.1    gsutre 		    uint8_t *);
    387        1.1    gsutre 
    388        1.1    gsutre /*
    389        1.1    gsutre  * Autoconfiguration for the acpivga driver.
    390        1.1    gsutre  */
    391        1.1    gsutre 
    392        1.1    gsutre static int
    393        1.1    gsutre acpidisp_vga_match(device_t parent, cfdata_t match, void *aux)
    394        1.1    gsutre {
    395        1.1    gsutre 	struct acpi_attach_args *aa = aux;
    396        1.1    gsutre 	struct acpi_devnode *ad = aa->aa_node;
    397        1.1    gsutre 	struct acpi_pci_info *ap;
    398        1.8    jruoho 	pcireg_t id, class;
    399        1.1    gsutre 	pcitag_t tag;
    400        1.1    gsutre 
    401        1.1    gsutre 	if (ad->ad_type != ACPI_TYPE_DEVICE)
    402        1.1    gsutre 		return 0;
    403        1.1    gsutre 
    404        1.1    gsutre 	ap = ad->ad_pciinfo;
    405        1.8    jruoho 
    406        1.8    jruoho 	if (ap == NULL)
    407        1.8    jruoho 		return 0;
    408        1.8    jruoho 
    409        1.8    jruoho 	if ((ap->ap_flags & ACPI_PCI_INFO_DEVICE) == 0)
    410        1.1    gsutre 		return 0;
    411        1.1    gsutre 
    412        1.8    jruoho 	if (ap->ap_function == 0xffff)
    413        1.8    jruoho 		return 0;
    414        1.8    jruoho 
    415        1.8    jruoho 	KASSERT(ap->ap_bus < 256);
    416        1.8    jruoho 	KASSERT(ap->ap_device < 32);
    417        1.8    jruoho 	KASSERT(ap->ap_function < 8);
    418        1.1    gsutre 
    419        1.8    jruoho 	/*
    420        1.8    jruoho 	 * Check that the PCI device is present, verify
    421        1.8    jruoho 	 * the class of the PCI device, and finally see
    422        1.8    jruoho 	 * if the ACPI device is capable of something.
    423        1.8    jruoho 	 */
    424        1.8    jruoho 	tag = pci_make_tag(aa->aa_pc, ap->ap_bus,
    425        1.8    jruoho 	    ap->ap_device, ap->ap_function);
    426        1.1    gsutre 
    427        1.8    jruoho 	id = pci_conf_read(aa->aa_pc, tag, PCI_ID_REG);
    428        1.8    jruoho 
    429        1.8    jruoho 	if (PCI_VENDOR(id) == PCI_VENDOR_INVALID || PCI_VENDOR(id) == 0)
    430        1.1    gsutre 		return 0;
    431        1.1    gsutre 
    432        1.8    jruoho 	class = pci_conf_read(aa->aa_pc, tag, PCI_CLASS_REG);
    433        1.8    jruoho 
    434        1.1    gsutre 	if (PCI_CLASS(class) != PCI_CLASS_DISPLAY)
    435        1.1    gsutre 		return 0;
    436        1.1    gsutre 
    437        1.1    gsutre 	if (acpidisp_vga_capabilities(ad) == 0)
    438        1.1    gsutre 		return 0;
    439        1.1    gsutre 
    440        1.1    gsutre 	return 1;
    441        1.1    gsutre }
    442        1.1    gsutre 
    443        1.1    gsutre static void
    444        1.1    gsutre acpidisp_vga_attach(device_t parent, device_t self, void *aux)
    445        1.1    gsutre {
    446        1.1    gsutre 	struct acpidisp_vga_softc *asc = device_private(self);
    447        1.1    gsutre 	struct acpi_attach_args *aa = aux;
    448        1.1    gsutre 	struct acpi_devnode *ad = aa->aa_node;
    449        1.1    gsutre 
    450        1.1    gsutre 	aprint_naive(": ACPI Display Adapter\n");
    451        1.1    gsutre 	aprint_normal(": ACPI Display Adapter\n");
    452        1.1    gsutre 
    453        1.8    jruoho 	asc->sc_node = ad;
    454        1.1    gsutre 	asc->sc_dev = self;
    455        1.1    gsutre 	asc->sc_log = NULL;
    456        1.8    jruoho 
    457        1.1    gsutre 	mutex_init(&asc->sc_mtx, MUTEX_DEFAULT, IPL_NONE);
    458        1.8    jruoho 
    459        1.1    gsutre 	asc->sc_caps = acpidisp_vga_capabilities(ad);
    460        1.1    gsutre 	asc->sc_policy = acpidisp_default_bios_policy;
    461        1.1    gsutre 	asc->sc_odinfo = NULL;
    462        1.1    gsutre 
    463        1.1    gsutre 	acpidisp_vga_print_capabilities(self, asc->sc_caps);
    464        1.1    gsutre 
    465        1.8    jruoho 	/*
    466        1.8    jruoho 	 * Enumerate connected output devices, attach
    467        1.8    jruoho 	 * output display devices, and bind the attached
    468        1.8    jruoho 	 * output devices to the enumerated ones.
    469        1.8    jruoho 	 */
    470        1.1    gsutre 	asc->sc_odinfo = acpidisp_init_odinfo(asc);
    471        1.1    gsutre 
    472        1.1    gsutre 	acpidisp_vga_scan_outdevs(asc);
    473        1.1    gsutre 
    474        1.1    gsutre 	if (asc->sc_odinfo != NULL) {
    475        1.1    gsutre 		acpidisp_vga_bind_outdevs(asc);
    476        1.1    gsutre 		acpidisp_print_odinfo(self, asc->sc_odinfo);
    477        1.1    gsutre 	}
    478        1.1    gsutre 
    479        1.1    gsutre 	/*
    480        1.1    gsutre 	 * Set BIOS automatic switch policy.
    481        1.1    gsutre 	 *
    482        1.8    jruoho 	 * Many laptops do not support output device switching with
    483        1.8    jruoho 	 * the methods specified in the ACPI extensions for display
    484        1.8    jruoho 	 * adapters. Therefore, we leave the BIOS output switch policy
    485        1.8    jruoho 	 * on "auto" instead of setting it to "normal".
    486        1.1    gsutre 	 */
    487        1.1    gsutre 	asc->sc_policy.fmt.output = ACPI_DISP_POLICY_OUTPUT_AUTO;
    488        1.1    gsutre 	asc->sc_policy.fmt.brightness = ACPI_DISP_POLICY_BRIGHTNESS_NORMAL;
    489        1.8    jruoho 
    490        1.1    gsutre 	if (acpidisp_set_policy(asc, asc->sc_policy.raw))
    491        1.1    gsutre 		asc->sc_policy = acpidisp_default_bios_policy;
    492        1.1    gsutre 
    493        1.1    gsutre 	acpidisp_vga_sysctl_setup(asc);
    494        1.1    gsutre 
    495        1.8    jruoho 	(void)pmf_device_register(self, NULL, acpidisp_vga_resume);
    496        1.8    jruoho 	(void)acpi_register_notify(asc->sc_node, acpidisp_vga_notify_handler);
    497        1.1    gsutre }
    498        1.1    gsutre 
    499        1.1    gsutre static int
    500        1.1    gsutre acpidisp_vga_detach(device_t self, int flags)
    501        1.1    gsutre {
    502        1.1    gsutre 	struct acpidisp_vga_softc *asc = device_private(self);
    503        1.1    gsutre 	struct acpidisp_odinfo *oi = asc->sc_odinfo;
    504        1.1    gsutre 	int rc;
    505        1.1    gsutre 
    506        1.1    gsutre 	pmf_device_deregister(self);
    507        1.1    gsutre 
    508        1.1    gsutre 	if (asc->sc_log != NULL)
    509        1.1    gsutre 		sysctl_teardown(&asc->sc_log);
    510        1.1    gsutre 
    511        1.1    gsutre 	asc->sc_policy = acpidisp_default_bios_policy;
    512        1.1    gsutre 	acpidisp_set_policy(asc, asc->sc_policy.raw);
    513        1.1    gsutre 
    514        1.1    gsutre 	acpi_deregister_notify(asc->sc_node);
    515        1.1    gsutre 
    516        1.1    gsutre 	if ((rc = config_detach_children(self, flags)) != 0)
    517        1.1    gsutre 		return rc;
    518        1.1    gsutre 
    519        1.1    gsutre 	if (oi != NULL) {
    520        1.1    gsutre 		kmem_free(oi->oi_dev,
    521        1.1    gsutre 		    oi->oi_dev_count * sizeof(*oi->oi_dev));
    522        1.1    gsutre 		kmem_free(oi, sizeof(*oi));
    523        1.1    gsutre 	}
    524        1.1    gsutre 
    525        1.1    gsutre 	mutex_destroy(&asc->sc_mtx);
    526        1.1    gsutre 
    527        1.1    gsutre 	return 0;
    528        1.1    gsutre }
    529        1.1    gsutre 
    530        1.1    gsutre void
    531        1.1    gsutre acpidisp_vga_childdetached(device_t self, device_t child)
    532        1.1    gsutre {
    533        1.1    gsutre 	struct acpidisp_vga_softc *asc = device_private(self);
    534        1.1    gsutre 	struct acpidisp_odinfo *oi = asc->sc_odinfo;
    535        1.1    gsutre 	struct acpidisp_outdev *od;
    536        1.1    gsutre 	struct acpi_devnode *ad;
    537        1.1    gsutre 	uint32_t i;
    538        1.1    gsutre 
    539        1.1    gsutre 	SIMPLEQ_FOREACH(ad, &asc->sc_node->ad_child_head, ad_child_list) {
    540        1.1    gsutre 
    541        1.1    gsutre 		if (ad->ad_device == child)
    542        1.1    gsutre 			ad->ad_device = NULL;
    543        1.1    gsutre 	}
    544        1.1    gsutre 
    545        1.1    gsutre 	if (oi == NULL)
    546        1.1    gsutre 		return;
    547        1.1    gsutre 
    548        1.1    gsutre 	for (i = 0, od = oi->oi_dev; i < oi->oi_dev_count; i++, od++) {
    549        1.1    gsutre 		if (od->od_device == child)
    550        1.1    gsutre 			od->od_device = NULL;
    551        1.1    gsutre 	}
    552        1.1    gsutre }
    553        1.1    gsutre 
    554        1.1    gsutre /*
    555        1.1    gsutre  * Attachment of acpiout under acpivga.
    556        1.1    gsutre  */
    557        1.1    gsutre 
    558        1.1    gsutre static void
    559        1.1    gsutre acpidisp_vga_scan_outdevs(struct acpidisp_vga_softc *asc)
    560        1.1    gsutre {
    561        1.1    gsutre 	struct acpidisp_acpivga_attach_args aa;
    562        1.1    gsutre 	struct acpi_devnode *ad;
    563        1.1    gsutre 
    564        1.1    gsutre 	/*
    565        1.1    gsutre 	 * Display output devices are ACPI children of the display adapter.
    566        1.1    gsutre 	 */
    567        1.1    gsutre 	SIMPLEQ_FOREACH(ad, &asc->sc_node->ad_child_head, ad_child_list) {
    568        1.1    gsutre 
    569        1.1    gsutre 		if (ad->ad_device != NULL)	/* This should not happen. */
    570        1.1    gsutre 			continue;
    571        1.1    gsutre 
    572        1.1    gsutre 		aa.aa_node = ad;
    573        1.1    gsutre 		aa.aa_mtx = &asc->sc_mtx;
    574        1.1    gsutre 
    575        1.1    gsutre 		ad->ad_device = config_found_ia(asc->sc_dev,
    576        1.1    gsutre 		    "acpivga", &aa, acpidisp_acpivga_print);
    577        1.1    gsutre 	}
    578        1.1    gsutre }
    579        1.1    gsutre 
    580        1.1    gsutre static int
    581        1.1    gsutre acpidisp_acpivga_print(void *aux, const char *pnp)
    582        1.1    gsutre {
    583        1.1    gsutre 	struct acpidisp_acpivga_attach_args *aa = aux;
    584        1.1    gsutre 	struct acpi_devnode *ad = aa->aa_node;
    585        1.1    gsutre 
    586        1.1    gsutre 	if (pnp) {
    587        1.1    gsutre 		aprint_normal("%s at %s", ad->ad_name, pnp);
    588        1.1    gsutre 	} else {
    589        1.1    gsutre 		aprint_normal(" (%s", ad->ad_name);
    590        1.1    gsutre 		if (ad->ad_devinfo->Valid & ACPI_VALID_ADR)
    591        1.1    gsutre 			aprint_normal(", 0x%04"PRIx64, ad->ad_devinfo->Address);
    592        1.1    gsutre 		aprint_normal(")");
    593        1.1    gsutre 	}
    594        1.1    gsutre 
    595        1.1    gsutre 	return UNCONF;
    596        1.1    gsutre }
    597        1.1    gsutre 
    598        1.1    gsutre /*
    599        1.1    gsutre  * Autoconfiguration for the acpiout driver.
    600        1.1    gsutre  */
    601        1.1    gsutre 
    602        1.1    gsutre static int
    603        1.1    gsutre acpidisp_out_match(device_t parent, cfdata_t match, void *aux)
    604        1.1    gsutre {
    605        1.1    gsutre 	struct acpidisp_acpivga_attach_args *aa = aux;
    606        1.1    gsutre 	struct acpi_devnode *ad = aa->aa_node;
    607        1.1    gsutre 
    608        1.1    gsutre 	if (ad->ad_type != ACPI_TYPE_DEVICE)
    609        1.1    gsutre 		return 0;
    610        1.1    gsutre 
    611        1.1    gsutre 	/*
    612        1.1    gsutre 	 * The method _ADR is required for display output
    613        1.1    gsutre 	 * devices (ACPI 4.0a, Sec. B.6.1).
    614        1.1    gsutre 	 */
    615        1.1    gsutre 	if (!(acpidisp_has_method(ad->ad_handle, "_ADR", ACPI_TYPE_INTEGER)))
    616        1.1    gsutre 		return 0;
    617        1.1    gsutre 
    618        1.1    gsutre 	return 1;
    619        1.1    gsutre }
    620        1.1    gsutre 
    621        1.1    gsutre static void
    622        1.1    gsutre acpidisp_out_attach(device_t parent, device_t self, void *aux)
    623        1.1    gsutre {
    624        1.1    gsutre 	struct acpidisp_out_softc *osc = device_private(self);
    625        1.1    gsutre 	struct acpidisp_acpivga_attach_args *aa = aux;
    626        1.1    gsutre 	struct acpi_devnode *ad = aa->aa_node;
    627        1.1    gsutre 	struct acpidisp_brctl *bc;
    628        1.1    gsutre 
    629        1.1    gsutre 	aprint_naive("\n");
    630        1.1    gsutre 	aprint_normal(": ACPI Display Output Device\n");
    631        1.1    gsutre 
    632        1.1    gsutre 	osc->sc_dev = self;
    633        1.1    gsutre 	osc->sc_node = ad;
    634        1.1    gsutre 	osc->sc_log = NULL;
    635        1.1    gsutre 	osc->sc_mtx = aa->aa_mtx;
    636        1.1    gsutre 	osc->sc_caps = acpidisp_out_capabilities(ad);
    637        1.1    gsutre 	osc->sc_brctl = NULL;
    638        1.1    gsutre 
    639        1.1    gsutre 	acpidisp_out_print_capabilities(self, osc->sc_caps);
    640        1.1    gsutre 
    641        1.1    gsutre 	osc->sc_brctl = acpidisp_init_brctl(osc);
    642        1.1    gsutre 	bc = osc->sc_brctl;
    643        1.1    gsutre 	if (bc != NULL) {
    644        1.1    gsutre 		bc->bc_current = bc->bc_level[bc->bc_level_count - 1];
    645        1.1    gsutre 
    646        1.1    gsutre 		/*
    647        1.1    gsutre 		 * Synchronize ACPI and driver brightness levels, and
    648        1.1    gsutre 		 * check that brightness control is working.
    649        1.1    gsutre 		 */
    650        1.1    gsutre 		(void)acpidisp_get_brightness(osc, &bc->bc_current);
    651        1.1    gsutre 		if (acpidisp_set_brightness(osc, bc->bc_current)) {
    652        1.1    gsutre 			kmem_free(bc->bc_level,
    653        1.1    gsutre 			    bc->bc_level_count * sizeof(*bc->bc_level));
    654        1.1    gsutre 			kmem_free(bc, sizeof(*bc));
    655        1.1    gsutre 			osc->sc_brctl = NULL;
    656        1.1    gsutre 		} else {
    657        1.1    gsutre 			acpidisp_print_brctl(self, osc->sc_brctl);
    658        1.1    gsutre 		}
    659        1.1    gsutre 	}
    660        1.1    gsutre 
    661        1.1    gsutre 	/* Install ACPI notify handler. */
    662        1.1    gsutre 	(void)acpi_register_notify(osc->sc_node, acpidisp_out_notify_handler);
    663        1.1    gsutre 
    664        1.1    gsutre 	/* Setup sysctl. */
    665        1.1    gsutre 	acpidisp_out_sysctl_setup(osc);
    666        1.1    gsutre 
    667        1.1    gsutre 	/* Power management. */
    668        1.1    gsutre 	if (!pmf_device_register(self, acpidisp_out_suspend,
    669        1.1    gsutre 	    acpidisp_out_resume))
    670        1.1    gsutre 		aprint_error_dev(self, "couldn't establish power handler\n");
    671        1.1    gsutre }
    672        1.1    gsutre 
    673        1.1    gsutre static int
    674        1.1    gsutre acpidisp_out_detach(device_t self, int flags)
    675        1.1    gsutre {
    676        1.1    gsutre 	struct acpidisp_out_softc *osc = device_private(self);
    677        1.1    gsutre 	struct acpidisp_brctl *bc = osc->sc_brctl;
    678        1.1    gsutre 
    679        1.1    gsutre 	pmf_device_deregister(self);
    680        1.1    gsutre 
    681        1.1    gsutre 	if (osc->sc_log != NULL)
    682        1.1    gsutre 		sysctl_teardown(&osc->sc_log);
    683        1.1    gsutre 
    684        1.1    gsutre 	acpi_deregister_notify(osc->sc_node);
    685        1.1    gsutre 
    686        1.1    gsutre 	if (bc != NULL) {
    687        1.1    gsutre 		kmem_free(bc->bc_level,
    688        1.1    gsutre 		    bc->bc_level_count * sizeof(*bc->bc_level));
    689        1.1    gsutre 		kmem_free(bc, sizeof(*bc));
    690        1.1    gsutre 	}
    691        1.1    gsutre 
    692        1.1    gsutre 	return 0;
    693        1.1    gsutre }
    694        1.1    gsutre 
    695        1.1    gsutre /*
    696        1.1    gsutre  * Power management.
    697        1.1    gsutre  */
    698        1.1    gsutre 
    699        1.1    gsutre static bool
    700        1.1    gsutre acpidisp_vga_resume(device_t self, const pmf_qual_t *qual)
    701        1.1    gsutre {
    702        1.1    gsutre 	struct acpidisp_vga_softc *asc = device_private(self);
    703        1.1    gsutre 
    704        1.1    gsutre 	mutex_enter(&asc->sc_mtx);
    705        1.1    gsutre 	(void)acpidisp_set_policy(asc, asc->sc_policy.raw);
    706        1.1    gsutre 	mutex_exit(&asc->sc_mtx);
    707        1.1    gsutre 
    708        1.1    gsutre 	return true;
    709        1.1    gsutre }
    710        1.1    gsutre 
    711        1.1    gsutre static bool
    712        1.1    gsutre acpidisp_out_suspend(device_t self, const pmf_qual_t *qual)
    713        1.1    gsutre {
    714        1.1    gsutre 	struct acpidisp_out_softc *osc = device_private(self);
    715        1.1    gsutre 
    716        1.1    gsutre 	mutex_enter(osc->sc_mtx);
    717        1.1    gsutre 	if (osc->sc_brctl != NULL)
    718        1.1    gsutre 		(void)acpidisp_get_brightness(osc, &osc->sc_brctl->bc_current);
    719        1.1    gsutre 	mutex_exit(osc->sc_mtx);
    720        1.1    gsutre 
    721        1.1    gsutre 	return true;
    722        1.1    gsutre }
    723        1.1    gsutre 
    724        1.1    gsutre static bool
    725        1.1    gsutre acpidisp_out_resume(device_t self, const pmf_qual_t *qual)
    726        1.1    gsutre {
    727        1.1    gsutre 	struct acpidisp_out_softc *osc = device_private(self);
    728        1.1    gsutre 
    729        1.1    gsutre 	mutex_enter(osc->sc_mtx);
    730        1.1    gsutre 	if (osc->sc_brctl != NULL)
    731        1.1    gsutre 		(void)acpidisp_set_brightness(osc, osc->sc_brctl->bc_current);
    732        1.1    gsutre 	mutex_exit(osc->sc_mtx);
    733        1.1    gsutre 
    734        1.1    gsutre 	return true;
    735        1.1    gsutre }
    736        1.1    gsutre 
    737        1.1    gsutre /*
    738        1.1    gsutre  * Capabilities (available methods).
    739        1.1    gsutre  */
    740        1.1    gsutre 
    741        1.1    gsutre static uint16_t
    742        1.1    gsutre acpidisp_vga_capabilities(const struct acpi_devnode *ad)
    743        1.1    gsutre {
    744        1.1    gsutre 	uint16_t cap;
    745        1.1    gsutre 
    746        1.1    gsutre 	cap = 0;
    747        1.1    gsutre 
    748        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_DOS", ACPI_TYPE_METHOD))
    749        1.1    gsutre 		cap |= ACPI_DISP_VGA_CAP__DOS;
    750        1.1    gsutre 
    751        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_DOD", ACPI_TYPE_PACKAGE))
    752        1.1    gsutre 		cap |= ACPI_DISP_VGA_CAP__DOD;
    753        1.1    gsutre 
    754        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_ROM", ACPI_TYPE_BUFFER))
    755        1.1    gsutre 		cap |= ACPI_DISP_VGA_CAP__ROM;
    756        1.1    gsutre 
    757        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_GPD", ACPI_TYPE_INTEGER))
    758        1.1    gsutre 		cap |= ACPI_DISP_VGA_CAP__GPD;
    759        1.1    gsutre 
    760        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_SPD", ACPI_TYPE_METHOD))
    761        1.1    gsutre 		cap |= ACPI_DISP_VGA_CAP__SPD;
    762        1.1    gsutre 
    763        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_VPO", ACPI_TYPE_INTEGER))
    764        1.1    gsutre 		cap |= ACPI_DISP_VGA_CAP__VPO;
    765        1.1    gsutre 
    766        1.1    gsutre 	return cap;
    767        1.1    gsutre }
    768        1.1    gsutre 
    769        1.1    gsutre static void
    770        1.1    gsutre acpidisp_vga_print_capabilities(device_t self, uint16_t cap)
    771        1.1    gsutre {
    772        1.1    gsutre 	aprint_debug_dev(self, "capabilities:%s%s%s%s%s%s\n",
    773        1.1    gsutre 	    (cap & ACPI_DISP_VGA_CAP__DOS) ? " _DOS" : "",
    774        1.1    gsutre 	    (cap & ACPI_DISP_VGA_CAP__DOD) ? " _DOD" : "",
    775        1.1    gsutre 	    (cap & ACPI_DISP_VGA_CAP__ROM) ? " _ROM" : "",
    776        1.1    gsutre 	    (cap & ACPI_DISP_VGA_CAP__GPD) ? " _GPD" : "",
    777        1.1    gsutre 	    (cap & ACPI_DISP_VGA_CAP__SPD) ? " _SPD" : "",
    778        1.1    gsutre 	    (cap & ACPI_DISP_VGA_CAP__VPO) ? " _VPO" : "");
    779        1.1    gsutre }
    780        1.1    gsutre 
    781        1.1    gsutre static uint16_t
    782        1.1    gsutre acpidisp_out_capabilities(const struct acpi_devnode *ad)
    783        1.1    gsutre {
    784        1.1    gsutre 	uint16_t cap;
    785        1.1    gsutre 
    786        1.1    gsutre 	cap = 0;
    787        1.1    gsutre 
    788       1.15   mlelstv 	/* List of Brigthness levels */
    789        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_BCL", ACPI_TYPE_PACKAGE))
    790        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__BCL;
    791        1.1    gsutre 
    792       1.15   mlelstv 	/* Set brightness level */
    793        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_BCM", ACPI_TYPE_METHOD))
    794        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__BCM;
    795        1.1    gsutre 
    796       1.15   mlelstv 	/* Get brightless level */
    797        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_BQC", ACPI_TYPE_INTEGER))
    798        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__BQC;
    799        1.1    gsutre 
    800       1.15   mlelstv 	/* Return EDID */
    801        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_DDC", ACPI_TYPE_METHOD))
    802        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__DDC;
    803        1.1    gsutre 
    804       1.15   mlelstv 	/* Get Status */
    805        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_DCS", ACPI_TYPE_INTEGER))
    806        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__DCS;
    807        1.1    gsutre 
    808       1.15   mlelstv 	/* Get Graphics State */
    809        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_DGS", ACPI_TYPE_INTEGER))
    810        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__DGS;
    811        1.1    gsutre 
    812       1.15   mlelstv 	/* Set Graphics State */
    813        1.1    gsutre 	if (acpidisp_has_method(ad->ad_handle, "_DSS", ACPI_TYPE_METHOD))
    814        1.1    gsutre 		cap |= ACPI_DISP_OUT_CAP__DSS;
    815        1.1    gsutre 
    816        1.1    gsutre 	return cap;
    817        1.1    gsutre }
    818        1.1    gsutre 
    819        1.1    gsutre static void
    820        1.1    gsutre acpidisp_out_print_capabilities(device_t self, uint16_t cap)
    821        1.1    gsutre {
    822        1.1    gsutre 	aprint_debug_dev(self, "capabilities:%s%s%s%s%s%s%s\n",
    823        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__BCL) ? " _BCL" : "",
    824        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__BCM) ? " _BCM" : "",
    825        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__BQC) ? " _BQC" : "",
    826        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__DDC) ? " _DDC" : "",
    827        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__DCS) ? " _DCS" : "",
    828        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__DGS) ? " _DGS" : "",
    829        1.1    gsutre 	    (cap & ACPI_DISP_OUT_CAP__DSS) ? " _DSS" : "");
    830        1.1    gsutre }
    831        1.1    gsutre 
    832        1.1    gsutre /*
    833        1.1    gsutre  * ACPI notify handlers.
    834        1.1    gsutre  */
    835        1.1    gsutre 
    836        1.1    gsutre static void
    837        1.1    gsutre acpidisp_vga_notify_handler(ACPI_HANDLE handle, uint32_t notify,
    838        1.1    gsutre     void *context)
    839        1.1    gsutre {
    840        1.1    gsutre 	struct acpidisp_vga_softc *asc = device_private(context);
    841        1.1    gsutre 	ACPI_OSD_EXEC_CALLBACK callback;
    842        1.1    gsutre 
    843        1.1    gsutre 	callback = NULL;
    844        1.1    gsutre 
    845        1.1    gsutre 	switch (notify) {
    846        1.1    gsutre 	case ACPI_NOTIFY_CycleOutputDevice:
    847        1.1    gsutre 		callback = acpidisp_vga_cycle_output_device_callback;
    848        1.1    gsutre 		break;
    849        1.1    gsutre 	case ACPI_NOTIFY_OutputDeviceStatusChange:
    850        1.1    gsutre 		callback = acpidisp_vga_output_device_change_callback;
    851        1.1    gsutre 		break;
    852        1.1    gsutre 	case ACPI_NOTIFY_CycleDisplayOutputHotkeyPressed:
    853        1.1    gsutre 	case ACPI_NOTIFY_NextDisplayOutputHotkeyPressed:
    854        1.1    gsutre 	case ACPI_NOTIFY_PreviousDisplayOutputHotkeyPressed:
    855        1.1    gsutre 		aprint_debug_dev(asc->sc_dev,
    856        1.1    gsutre 		    "unhandled notify: 0x%"PRIx32"\n", notify);
    857        1.1    gsutre 		return;
    858        1.1    gsutre 	default:
    859        1.1    gsutre 		aprint_error_dev(asc->sc_dev,
    860        1.1    gsutre 		    "unknown notify: 0x%"PRIx32"\n", notify);
    861        1.1    gsutre 		return;
    862        1.1    gsutre 	}
    863        1.1    gsutre 
    864        1.1    gsutre 	KASSERT(callback != NULL);
    865        1.1    gsutre 	(void)AcpiOsExecute(OSL_NOTIFY_HANDLER, callback, asc);
    866        1.1    gsutre }
    867        1.1    gsutre 
    868        1.1    gsutre static void
    869        1.1    gsutre acpidisp_out_notify_handler(ACPI_HANDLE handle, uint32_t notify,
    870        1.1    gsutre     void *context)
    871        1.1    gsutre {
    872        1.1    gsutre 	struct acpidisp_out_softc *osc = device_private(context);
    873        1.1    gsutre 	ACPI_OSD_EXEC_CALLBACK callback;
    874        1.1    gsutre 
    875        1.1    gsutre 	callback = NULL;
    876        1.1    gsutre 
    877        1.1    gsutre 	switch (notify) {
    878        1.1    gsutre 	case ACPI_NOTIFY_IncreaseBrightness:
    879        1.1    gsutre 		callback = acpidisp_out_increase_brightness_callback;
    880        1.1    gsutre 		break;
    881        1.1    gsutre 	case ACPI_NOTIFY_DecreaseBrightness:
    882        1.1    gsutre 		callback = acpidisp_out_decrease_brightness_callback;
    883        1.1    gsutre 		break;
    884        1.1    gsutre 	case ACPI_NOTIFY_CycleBrightness:
    885        1.1    gsutre 		callback = acpidisp_out_cycle_brightness_callback;
    886        1.1    gsutre 		break;
    887        1.1    gsutre 	case ACPI_NOTIFY_ZeroBrightness:
    888        1.1    gsutre 		callback = acpidisp_out_zero_brightness_callback;
    889        1.1    gsutre 		break;
    890        1.1    gsutre 	case ACPI_NOTIFY_DisplayDeviceOff:
    891        1.1    gsutre 		aprint_debug_dev(osc->sc_dev,
    892        1.1    gsutre 		    "unhandled notify: 0x%"PRIx32"\n", notify);
    893        1.1    gsutre 		return;
    894        1.1    gsutre 	default:
    895        1.1    gsutre 		aprint_error_dev(osc->sc_dev,
    896        1.1    gsutre 		    "unknown notify: 0x%"PRIx32"\n", notify);
    897        1.1    gsutre 		return;
    898        1.1    gsutre 	}
    899        1.1    gsutre 
    900        1.1    gsutre 	KASSERT(callback != NULL);
    901        1.1    gsutre 	(void)AcpiOsExecute(OSL_NOTIFY_HANDLER, callback, osc);
    902        1.1    gsutre }
    903        1.1    gsutre 
    904        1.1    gsutre /*
    905        1.1    gsutre  * ACPI notify callbacks.
    906        1.1    gsutre  *
    907        1.1    gsutre  * Exclusive access to the sc_odinfo field of struct acpidisp_vga_softc is
    908        1.1    gsutre  * guaranteed since:
    909        1.1    gsutre  *
    910        1.1    gsutre  * (a) this field is only used in ACPI display notify callbacks,
    911        1.1    gsutre  * (b) ACPI display notify callbacks are scheduled with AcpiOsExecute,
    912        1.1    gsutre  * (c) callbacks scheduled with AcpiOsExecute are executed sequentially.
    913        1.1    gsutre  */
    914        1.1    gsutre 
    915        1.1    gsutre static void
    916        1.1    gsutre acpidisp_vga_cycle_output_device_callback(void *arg)
    917        1.1    gsutre {
    918        1.1    gsutre 	struct acpidisp_vga_softc *asc = arg;
    919        1.1    gsutre 	struct acpidisp_odinfo *oi = asc->sc_odinfo;
    920        1.1    gsutre 	struct acpidisp_outdev *od;
    921        1.1    gsutre 	struct acpidisp_out_softc *osc, *last_osc;
    922        1.1    gsutre 	acpidisp_od_state_t state, last_state;
    923        1.1    gsutre 	acpidisp_od_status_t status;
    924        1.5    gsutre 	acpidisp_bios_policy_t lock_policy;
    925        1.1    gsutre 	uint32_t i;
    926        1.1    gsutre 
    927        1.1    gsutre 	if (oi == NULL)
    928        1.1    gsutre 		return;
    929        1.1    gsutre 
    930        1.1    gsutre 	/* Mutual exclusion with callbacks of connected output devices. */
    931        1.1    gsutre 	mutex_enter(&asc->sc_mtx);
    932        1.1    gsutre 
    933        1.5    gsutre 	/* Lock the _DGS values. */
    934        1.5    gsutre 	lock_policy = asc->sc_policy;
    935        1.5    gsutre 	lock_policy.fmt.output = ACPI_DISP_POLICY_OUTPUT_LOCKED;
    936        1.5    gsutre 	(void)acpidisp_set_policy(asc, lock_policy.raw);
    937        1.5    gsutre 
    938        1.1    gsutre 	last_osc = NULL;
    939        1.1    gsutre 	for (i = 0, od = oi->oi_dev; i < oi->oi_dev_count; i++, od++) {
    940        1.1    gsutre 		if (od->od_device == NULL)
    941        1.1    gsutre 			continue;
    942        1.1    gsutre 		osc = device_private(od->od_device);
    943        1.1    gsutre 
    944        1.1    gsutre 		if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__DSS))
    945        1.1    gsutre 			continue;
    946        1.1    gsutre 		if (acpidisp_get_state(osc, &state.raw))
    947        1.1    gsutre 			continue;
    948        1.1    gsutre 
    949        1.1    gsutre 		if (acpidisp_get_status(osc, &status.raw)) {
    950        1.1    gsutre 			state.fmt.no_switch = 0;
    951        1.1    gsutre 		} else {
    952        1.1    gsutre 			state.fmt.active &= status.fmt.ready;
    953        1.1    gsutre 
    954        1.1    gsutre 			if (state.fmt.active == status.fmt.activated)
    955        1.1    gsutre 				state.fmt.no_switch = 1;
    956        1.1    gsutre 			else
    957        1.1    gsutre 				state.fmt.no_switch = 0;
    958        1.1    gsutre 		}
    959        1.1    gsutre 
    960        1.1    gsutre 		state.fmt.commit = 0;
    961        1.1    gsutre 
    962        1.1    gsutre 		if (last_osc != NULL)
    963        1.1    gsutre 			(void)acpidisp_set_state(last_osc, last_state.raw);
    964        1.1    gsutre 
    965        1.1    gsutre 		last_osc = osc;
    966        1.1    gsutre 		last_state = state;
    967        1.1    gsutre 	}
    968        1.1    gsutre 
    969        1.1    gsutre 	if (last_osc != NULL) {
    970        1.1    gsutre 		last_state.fmt.commit = 1;
    971        1.1    gsutre 		(void)acpidisp_set_state(last_osc, last_state.raw);
    972        1.1    gsutre 	}
    973        1.1    gsutre 
    974        1.5    gsutre 	/* Restore the original BIOS policy. */
    975        1.5    gsutre 	(void)acpidisp_set_policy(asc, asc->sc_policy.raw);
    976        1.5    gsutre 
    977        1.1    gsutre 	mutex_exit(&asc->sc_mtx);
    978        1.1    gsutre }
    979        1.1    gsutre 
    980        1.1    gsutre static void
    981        1.1    gsutre acpidisp_vga_output_device_change_callback(void *arg)
    982        1.1    gsutre {
    983        1.1    gsutre 	struct acpidisp_vga_softc *asc = arg;
    984        1.1    gsutre 	struct acpidisp_odinfo *oi = asc->sc_odinfo;
    985        1.1    gsutre 	bool switch_outputs;
    986        1.1    gsutre 
    987        1.1    gsutre 	if (oi != NULL) {
    988        1.1    gsutre 		kmem_free(oi->oi_dev,
    989        1.1    gsutre 		    oi->oi_dev_count * sizeof(*oi->oi_dev));
    990        1.1    gsutre 		kmem_free(oi, sizeof(*oi));
    991        1.1    gsutre 	}
    992        1.1    gsutre 
    993        1.1    gsutre 	asc->sc_odinfo = acpidisp_init_odinfo(asc);
    994        1.1    gsutre 	if (asc->sc_odinfo != NULL) {
    995        1.1    gsutre 		acpidisp_vga_bind_outdevs(asc);
    996        1.1    gsutre 		acpidisp_print_odinfo(asc->sc_dev, asc->sc_odinfo);
    997        1.1    gsutre 	}
    998        1.1    gsutre 
    999        1.1    gsutre 	/* Perform display output switch if needed. */
   1000        1.1    gsutre 	mutex_enter(&asc->sc_mtx);
   1001        1.1    gsutre 	switch_outputs =
   1002        1.1    gsutre 	    (asc->sc_policy.fmt.output == ACPI_DISP_POLICY_OUTPUT_NORMAL);
   1003        1.1    gsutre 	mutex_exit(&asc->sc_mtx);
   1004        1.1    gsutre 	if (switch_outputs)
   1005        1.1    gsutre 		acpidisp_vga_cycle_output_device_callback(arg);
   1006        1.1    gsutre }
   1007        1.1    gsutre 
   1008        1.1    gsutre static void
   1009        1.1    gsutre acpidisp_out_increase_brightness_callback(void *arg)
   1010        1.1    gsutre {
   1011        1.1    gsutre 	struct acpidisp_out_softc *osc = arg;
   1012        1.1    gsutre 	struct acpidisp_brctl *bc = osc->sc_brctl;
   1013        1.1    gsutre 	uint8_t lo, up;
   1014        1.1    gsutre 
   1015        1.1    gsutre 	if (bc == NULL) {
   1016        1.1    gsutre 		/* Fallback to pmf(9). */
   1017        1.1    gsutre 		pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_UP);
   1018        1.1    gsutre 		return;
   1019        1.1    gsutre 	}
   1020        1.1    gsutre 
   1021        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1022        1.1    gsutre 
   1023        1.1    gsutre 	(void)acpidisp_get_brightness(osc, &bc->bc_current);
   1024        1.1    gsutre 
   1025        1.1    gsutre 	acpidisp_array_search(bc->bc_level, bc->bc_level_count,
   1026        1.1    gsutre 	    bc->bc_current + ACPI_DISP_BRCTL_STEP, &lo, &up);
   1027        1.1    gsutre 
   1028        1.1    gsutre 	bc->bc_current = up;
   1029        1.1    gsutre 	(void)acpidisp_set_brightness(osc, bc->bc_current);
   1030        1.1    gsutre 
   1031        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1032        1.1    gsutre }
   1033        1.1    gsutre 
   1034        1.1    gsutre static void
   1035        1.1    gsutre acpidisp_out_decrease_brightness_callback(void *arg)
   1036        1.1    gsutre {
   1037        1.1    gsutre 	struct acpidisp_out_softc *osc = arg;
   1038        1.1    gsutre 	struct acpidisp_brctl *bc = osc->sc_brctl;
   1039        1.1    gsutre 	uint8_t lo, up;
   1040        1.1    gsutre 
   1041        1.1    gsutre 	if (bc == NULL) {
   1042        1.1    gsutre 		/* Fallback to pmf(9). */
   1043        1.1    gsutre 		pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_DOWN);
   1044        1.1    gsutre 		return;
   1045        1.1    gsutre 	}
   1046        1.1    gsutre 
   1047        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1048        1.1    gsutre 
   1049        1.1    gsutre 	(void)acpidisp_get_brightness(osc, &bc->bc_current);
   1050        1.1    gsutre 
   1051        1.1    gsutre 	acpidisp_array_search(bc->bc_level, bc->bc_level_count,
   1052        1.1    gsutre 	    bc->bc_current - ACPI_DISP_BRCTL_STEP, &lo, &up);
   1053        1.1    gsutre 
   1054        1.1    gsutre 	bc->bc_current = lo;
   1055        1.1    gsutre 	(void)acpidisp_set_brightness(osc, bc->bc_current);
   1056        1.1    gsutre 
   1057        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1058        1.1    gsutre }
   1059        1.1    gsutre 
   1060        1.1    gsutre static void
   1061        1.1    gsutre acpidisp_out_cycle_brightness_callback(void *arg)
   1062        1.1    gsutre {
   1063        1.1    gsutre 	struct acpidisp_out_softc *osc = arg;
   1064        1.1    gsutre 	struct acpidisp_brctl *bc = osc->sc_brctl;
   1065        1.1    gsutre 	uint8_t lo, up;
   1066        1.1    gsutre 
   1067        1.1    gsutre 	if (bc == NULL) {
   1068        1.1    gsutre 		/* No fallback. */
   1069        1.1    gsutre 		return;
   1070        1.1    gsutre 	}
   1071        1.1    gsutre 
   1072        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1073        1.1    gsutre 
   1074        1.1    gsutre 	(void)acpidisp_get_brightness(osc, &bc->bc_current);
   1075        1.1    gsutre 
   1076        1.1    gsutre 	if (bc->bc_current >= bc->bc_level[bc->bc_level_count - 1]) {
   1077        1.1    gsutre 		bc->bc_current = bc->bc_level[0];
   1078        1.1    gsutre 	} else {
   1079        1.1    gsutre 		acpidisp_array_search(bc->bc_level, bc->bc_level_count,
   1080        1.1    gsutre 		    bc->bc_current + 1, &lo, &up);
   1081        1.1    gsutre 		bc->bc_current = up;
   1082        1.1    gsutre 	}
   1083        1.1    gsutre 
   1084        1.1    gsutre 	(void)acpidisp_set_brightness(osc, bc->bc_current);
   1085        1.1    gsutre 
   1086        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1087        1.1    gsutre }
   1088        1.1    gsutre 
   1089        1.1    gsutre static void
   1090        1.1    gsutre acpidisp_out_zero_brightness_callback(void *arg)
   1091        1.1    gsutre {
   1092        1.1    gsutre 	struct acpidisp_out_softc *osc = arg;
   1093        1.1    gsutre 	struct acpidisp_brctl *bc = osc->sc_brctl;
   1094        1.1    gsutre 
   1095        1.1    gsutre 	if (bc == NULL) {
   1096        1.1    gsutre 		/* Fallback to pmf(9). */
   1097        1.1    gsutre 		/* XXX Is this the intended meaning of PMFE_DISPLAY_REDUCED? */
   1098        1.1    gsutre 		pmf_event_inject(NULL, PMFE_DISPLAY_REDUCED);
   1099        1.1    gsutre 		return;
   1100        1.1    gsutre 	}
   1101        1.1    gsutre 
   1102        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1103        1.1    gsutre 
   1104        1.1    gsutre 	bc->bc_current = bc->bc_level[0];
   1105        1.1    gsutre 	(void)acpidisp_set_brightness(osc, bc->bc_current);
   1106        1.1    gsutre 
   1107        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1108        1.1    gsutre }
   1109        1.1    gsutre 
   1110        1.1    gsutre /*
   1111        1.1    gsutre  * Sysctl setup.
   1112        1.1    gsutre  */
   1113        1.1    gsutre 
   1114        1.1    gsutre static void
   1115        1.1    gsutre acpidisp_vga_sysctl_setup(struct acpidisp_vga_softc *asc)
   1116        1.1    gsutre {
   1117        1.1    gsutre 	const struct sysctlnode *rnode;
   1118        1.1    gsutre 
   1119        1.1    gsutre 	if (asc->sc_caps & ACPI_DISP_VGA_CAP__DOS) {
   1120        1.1    gsutre 		if ((sysctl_createv(&asc->sc_log, 0, NULL, &rnode,
   1121        1.1    gsutre 		    0, CTLTYPE_NODE, "acpi", NULL,
   1122        1.1    gsutre 		    NULL, 0, NULL, 0,
   1123       1.11     pooka 		    CTL_HW, CTL_CREATE, CTL_EOL)) != 0)
   1124        1.1    gsutre 			goto fail;
   1125        1.1    gsutre 
   1126        1.1    gsutre 		if ((sysctl_createv(&asc->sc_log, 0, &rnode, &rnode,
   1127        1.1    gsutre 		    0, CTLTYPE_NODE, device_xname(asc->sc_dev),
   1128        1.1    gsutre 		    SYSCTL_DESCR("ACPI display adapter controls"),
   1129        1.1    gsutre 		    NULL, 0, NULL, 0,
   1130        1.1    gsutre 		    CTL_CREATE, CTL_EOL)) != 0)
   1131        1.1    gsutre 			goto fail;
   1132        1.1    gsutre 
   1133        1.4    gsutre #ifdef ACPI_DEBUG
   1134        1.1    gsutre 		(void)sysctl_createv(&asc->sc_log, 0, &rnode, NULL,
   1135        1.4    gsutre 		    CTLFLAG_READWRITE | CTLFLAG_HEX, CTLTYPE_INT, "bios_policy",
   1136        1.4    gsutre 		    SYSCTL_DESCR("Current BIOS switch policies (debug)"),
   1137       1.10       dsl 		    acpidisp_vga_sysctl_policy, 0, (void *)asc, 0,
   1138        1.1    gsutre 		    CTL_CREATE, CTL_EOL);
   1139        1.4    gsutre #endif
   1140        1.4    gsutre 
   1141        1.4    gsutre 		(void)sysctl_createv(&asc->sc_log, 0, &rnode, NULL,
   1142        1.4    gsutre 		    CTLFLAG_READWRITE, CTLTYPE_BOOL, "bios_switch",
   1143        1.4    gsutre 		    SYSCTL_DESCR("Current BIOS output switching policy"),
   1144       1.10       dsl 		    acpidisp_vga_sysctl_policy_output, 0, (void *)asc, 0,
   1145        1.4    gsutre 		    CTL_CREATE, CTL_EOL);
   1146        1.1    gsutre 	}
   1147        1.1    gsutre 
   1148        1.1    gsutre 	return;
   1149        1.1    gsutre 
   1150        1.1    gsutre  fail:
   1151        1.1    gsutre 	aprint_error_dev(asc->sc_dev, "couldn't add sysctl nodes\n");
   1152        1.1    gsutre }
   1153        1.1    gsutre 
   1154        1.1    gsutre static void
   1155        1.1    gsutre acpidisp_out_sysctl_setup(struct acpidisp_out_softc *osc)
   1156        1.1    gsutre {
   1157        1.1    gsutre 	const struct sysctlnode *rnode;
   1158        1.1    gsutre 
   1159        1.1    gsutre #ifdef ACPI_DISP_SWITCH_SYSCTLS
   1160        1.1    gsutre 	if ((osc->sc_brctl != NULL) ||
   1161        1.1    gsutre 	    (osc->sc_caps & ACPI_DISP_OUT_CAP__DCS) ||
   1162        1.1    gsutre 	    (osc->sc_caps & ACPI_DISP_OUT_CAP__DGS)) {
   1163        1.1    gsutre #else
   1164        1.1    gsutre 	if (osc->sc_brctl != NULL) {
   1165        1.1    gsutre #endif
   1166        1.1    gsutre 		if ((sysctl_createv(&osc->sc_log, 0, NULL, &rnode,
   1167        1.1    gsutre 		    0, CTLTYPE_NODE, "acpi", NULL,
   1168        1.1    gsutre 		    NULL, 0, NULL, 0,
   1169       1.11     pooka 		    CTL_HW, CTL_CREATE, CTL_EOL)) != 0)
   1170        1.1    gsutre 			goto fail;
   1171        1.1    gsutre 
   1172        1.1    gsutre 		if ((sysctl_createv(&osc->sc_log, 0, &rnode, &rnode,
   1173        1.1    gsutre 		    0, CTLTYPE_NODE, device_xname(osc->sc_dev),
   1174        1.1    gsutre 		    SYSCTL_DESCR("ACPI display output device controls"),
   1175        1.1    gsutre 		    NULL, 0, NULL, 0,
   1176        1.1    gsutre 		    CTL_CREATE, CTL_EOL)) != 0)
   1177        1.1    gsutre 			goto fail;
   1178        1.1    gsutre 	}
   1179        1.1    gsutre 
   1180        1.1    gsutre 	if (osc->sc_brctl != NULL) {
   1181        1.1    gsutre 		(void)sysctl_createv(&osc->sc_log, 0, &rnode, NULL,
   1182        1.1    gsutre 		    CTLFLAG_READWRITE, CTLTYPE_INT, "brightness",
   1183        1.1    gsutre 		    SYSCTL_DESCR("Current brightness level"),
   1184       1.10       dsl 		    acpidisp_out_sysctl_brightness, 0, (void *)osc, 0,
   1185        1.1    gsutre 		    CTL_CREATE, CTL_EOL);
   1186        1.1    gsutre 	}
   1187        1.1    gsutre 
   1188        1.1    gsutre #ifdef ACPI_DISP_SWITCH_SYSCTLS
   1189        1.1    gsutre 	if (osc->sc_caps & ACPI_DISP_OUT_CAP__DCS) {
   1190        1.1    gsutre 		(void)sysctl_createv(&osc->sc_log, 0, &rnode, NULL,
   1191        1.1    gsutre 		    CTLFLAG_READONLY | CTLFLAG_HEX, CTLTYPE_INT, "status",
   1192        1.1    gsutre 		    SYSCTL_DESCR("Current status"),
   1193       1.10       dsl 		    acpidisp_out_sysctl_status, 0, (void *)osc, 0,
   1194        1.1    gsutre 		    CTL_CREATE, CTL_EOL);
   1195        1.1    gsutre 	}
   1196        1.1    gsutre 
   1197        1.1    gsutre 	if (osc->sc_caps & ACPI_DISP_OUT_CAP__DGS) {
   1198        1.1    gsutre 		int access;
   1199        1.1    gsutre 
   1200        1.1    gsutre 		if (osc->sc_caps & ACPI_DISP_OUT_CAP__DSS)
   1201        1.1    gsutre 			access = CTLFLAG_READWRITE;
   1202        1.1    gsutre 		else
   1203        1.1    gsutre 			access = CTLFLAG_READONLY;
   1204        1.1    gsutre 
   1205        1.1    gsutre 		(void)sysctl_createv(&osc->sc_log, 0, &rnode, NULL,
   1206        1.1    gsutre 		    access | CTLFLAG_HEX, CTLTYPE_INT, "state",
   1207        1.1    gsutre 		    SYSCTL_DESCR("Next state (active or inactive)"),
   1208       1.10       dsl 		    acpidisp_out_sysctl_state, 0, (void *)osc, 0,
   1209        1.1    gsutre 		    CTL_CREATE, CTL_EOL);
   1210        1.1    gsutre 	}
   1211        1.1    gsutre #endif
   1212        1.1    gsutre 
   1213        1.1    gsutre 	return;
   1214        1.1    gsutre 
   1215        1.1    gsutre  fail:
   1216        1.1    gsutre 	aprint_error_dev(osc->sc_dev, "couldn't add sysctl nodes\n");
   1217        1.1    gsutre }
   1218        1.1    gsutre 
   1219        1.1    gsutre /*
   1220        1.1    gsutre  * Sysctl callbacks.
   1221        1.1    gsutre  */
   1222        1.1    gsutre 
   1223        1.4    gsutre #ifdef ACPI_DEBUG
   1224        1.1    gsutre static int
   1225        1.1    gsutre acpidisp_vga_sysctl_policy(SYSCTLFN_ARGS)
   1226        1.1    gsutre {
   1227        1.1    gsutre 	struct sysctlnode node;
   1228        1.1    gsutre 	struct acpidisp_vga_softc *asc;
   1229        1.1    gsutre 	uint32_t val;
   1230        1.1    gsutre 	int error;
   1231        1.1    gsutre 
   1232        1.1    gsutre 	node = *rnode;
   1233        1.7    gsutre 	asc = node.sysctl_data;
   1234        1.1    gsutre 
   1235        1.1    gsutre 	mutex_enter(&asc->sc_mtx);
   1236        1.1    gsutre 	val = (uint32_t)asc->sc_policy.raw;
   1237        1.1    gsutre 	mutex_exit(&asc->sc_mtx);
   1238        1.1    gsutre 
   1239        1.1    gsutre 	node.sysctl_data = &val;
   1240        1.1    gsutre 	error = sysctl_lookup(SYSCTLFN_CALL(&node));
   1241        1.1    gsutre 	if (error || newp == NULL)
   1242        1.1    gsutre 		return error;
   1243        1.1    gsutre 
   1244        1.1    gsutre 	if (val > 0x7)
   1245        1.1    gsutre 		return EINVAL;
   1246        1.1    gsutre 
   1247        1.1    gsutre 	mutex_enter(&asc->sc_mtx);
   1248        1.1    gsutre 	asc->sc_policy.raw = (uint8_t)val;
   1249        1.1    gsutre 	error = acpidisp_set_policy(asc, asc->sc_policy.raw);
   1250        1.1    gsutre 	mutex_exit(&asc->sc_mtx);
   1251        1.1    gsutre 
   1252        1.1    gsutre 	return error;
   1253        1.1    gsutre }
   1254        1.4    gsutre #endif
   1255        1.4    gsutre 
   1256        1.4    gsutre static int
   1257        1.4    gsutre acpidisp_vga_sysctl_policy_output(SYSCTLFN_ARGS)
   1258        1.4    gsutre {
   1259        1.4    gsutre 	struct sysctlnode node;
   1260        1.4    gsutre 	struct acpidisp_vga_softc *asc;
   1261        1.4    gsutre 	bool val;
   1262        1.4    gsutre 	int error;
   1263        1.4    gsutre 
   1264        1.4    gsutre 	node = *rnode;
   1265        1.7    gsutre 	asc = node.sysctl_data;
   1266        1.4    gsutre 
   1267        1.4    gsutre 	mutex_enter(&asc->sc_mtx);
   1268        1.4    gsutre 	val = (asc->sc_policy.fmt.output == ACPI_DISP_POLICY_OUTPUT_AUTO);
   1269        1.4    gsutre 	mutex_exit(&asc->sc_mtx);
   1270        1.4    gsutre 
   1271        1.4    gsutre 	node.sysctl_data = &val;
   1272        1.4    gsutre 	error = sysctl_lookup(SYSCTLFN_CALL(&node));
   1273        1.4    gsutre 	if (error || newp == NULL)
   1274        1.4    gsutre 		return error;
   1275        1.4    gsutre 
   1276        1.4    gsutre 	mutex_enter(&asc->sc_mtx);
   1277        1.4    gsutre 	if (val)
   1278        1.4    gsutre 		asc->sc_policy.fmt.output = ACPI_DISP_POLICY_OUTPUT_AUTO;
   1279        1.4    gsutre 	else
   1280        1.4    gsutre 		asc->sc_policy.fmt.output = ACPI_DISP_POLICY_OUTPUT_NORMAL;
   1281        1.4    gsutre 	error = acpidisp_set_policy(asc, asc->sc_policy.raw);
   1282        1.4    gsutre 	mutex_exit(&asc->sc_mtx);
   1283        1.4    gsutre 
   1284        1.4    gsutre 	return error;
   1285        1.4    gsutre }
   1286        1.1    gsutre 
   1287        1.1    gsutre #ifdef ACPI_DISP_SWITCH_SYSCTLS
   1288        1.1    gsutre static int
   1289        1.1    gsutre acpidisp_out_sysctl_status(SYSCTLFN_ARGS)
   1290        1.1    gsutre {
   1291        1.1    gsutre 	struct sysctlnode node;
   1292        1.1    gsutre 	struct acpidisp_out_softc *osc;
   1293        1.1    gsutre 	uint32_t val;
   1294        1.1    gsutre 	int error;
   1295        1.1    gsutre 
   1296        1.1    gsutre 	node = *rnode;
   1297        1.7    gsutre 	osc = node.sysctl_data;
   1298        1.1    gsutre 
   1299        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1300        1.1    gsutre 	error = acpidisp_get_status(osc, &val);
   1301        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1302        1.1    gsutre 
   1303        1.1    gsutre 	if (error)
   1304        1.1    gsutre 		return error;
   1305        1.1    gsutre 
   1306        1.1    gsutre 	node.sysctl_data = &val;
   1307        1.1    gsutre 	error = sysctl_lookup(SYSCTLFN_CALL(&node));
   1308        1.1    gsutre 	if (error || newp == NULL)
   1309        1.1    gsutre 		return error;
   1310        1.1    gsutre 
   1311        1.1    gsutre 	return 0;
   1312        1.1    gsutre }
   1313        1.1    gsutre 
   1314        1.1    gsutre static int
   1315        1.1    gsutre acpidisp_out_sysctl_state(SYSCTLFN_ARGS)
   1316        1.1    gsutre {
   1317        1.1    gsutre 	struct sysctlnode node;
   1318        1.1    gsutre 	struct acpidisp_out_softc *osc;
   1319        1.1    gsutre 	uint32_t val;
   1320        1.1    gsutre 	int error;
   1321        1.1    gsutre 
   1322        1.1    gsutre 	node = *rnode;
   1323        1.7    gsutre 	osc = node.sysctl_data;
   1324        1.1    gsutre 
   1325        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1326        1.1    gsutre 	error = acpidisp_get_state(osc, &val);
   1327        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1328        1.1    gsutre 
   1329        1.1    gsutre 	if (error)
   1330        1.1    gsutre 		return error;
   1331        1.1    gsutre 
   1332        1.1    gsutre 	node.sysctl_data = &val;
   1333        1.1    gsutre 	error = sysctl_lookup(SYSCTLFN_CALL(&node));
   1334        1.1    gsutre 	if (error || newp == NULL)
   1335        1.1    gsutre 		return error;
   1336        1.1    gsutre 
   1337        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1338        1.1    gsutre 	error = acpidisp_set_state(osc, val);
   1339        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1340        1.1    gsutre 
   1341        1.1    gsutre 	return error;
   1342        1.1    gsutre }
   1343        1.1    gsutre #endif
   1344        1.1    gsutre 
   1345        1.1    gsutre static int
   1346        1.1    gsutre acpidisp_out_sysctl_brightness(SYSCTLFN_ARGS)
   1347        1.1    gsutre {
   1348        1.1    gsutre 	struct sysctlnode node;
   1349        1.1    gsutre 	struct acpidisp_out_softc *osc;
   1350        1.1    gsutre 	struct acpidisp_brctl *bc;
   1351        1.1    gsutre 	int val, error;
   1352        1.1    gsutre 	uint8_t lo, up, level;
   1353        1.1    gsutre 
   1354        1.1    gsutre 	node = *rnode;
   1355        1.7    gsutre 	osc = node.sysctl_data;
   1356        1.1    gsutre 	bc = osc->sc_brctl;
   1357        1.1    gsutre 
   1358        1.1    gsutre 	KASSERT(bc != NULL);
   1359        1.1    gsutre 
   1360        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1361        1.1    gsutre 	(void)acpidisp_get_brightness(osc, &bc->bc_current);
   1362        1.1    gsutre 	val = (int)bc->bc_current;
   1363        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1364        1.1    gsutre 
   1365        1.1    gsutre 	node.sysctl_data = &val;
   1366        1.1    gsutre 	error = sysctl_lookup(SYSCTLFN_CALL(&node));
   1367        1.1    gsutre 	if (error || newp == NULL)
   1368        1.1    gsutre 		return error;
   1369        1.1    gsutre 
   1370        1.1    gsutre 	acpidisp_array_search(bc->bc_level, bc->bc_level_count, val, &lo, &up);
   1371        1.1    gsutre 	if ((lo != up) && (val - lo) < (up - val))
   1372        1.1    gsutre 		level = lo;
   1373        1.1    gsutre 	else
   1374        1.1    gsutre 		level = up;
   1375        1.1    gsutre 
   1376        1.1    gsutre 	mutex_enter(osc->sc_mtx);
   1377        1.1    gsutre 	bc->bc_current = level;
   1378        1.1    gsutre 	error = acpidisp_set_brightness(osc, bc->bc_current);
   1379        1.1    gsutre 	mutex_exit(osc->sc_mtx);
   1380        1.1    gsutre 
   1381        1.1    gsutre 	return error;
   1382        1.1    gsutre }
   1383        1.1    gsutre 
   1384        1.1    gsutre /*
   1385        1.1    gsutre  * Initialization of acpidisp_odinfo (_DOD) and acpidisp_brctl (_BCL).
   1386        1.1    gsutre  */
   1387        1.1    gsutre 
   1388        1.1    gsutre /*
   1389        1.1    gsutre  * Regarding _DOD (ACPI 4.0a, Sec. B.4.2):
   1390        1.1    gsutre  *
   1391        1.1    gsutre  * "The _DOD method returns a list of devices attached to the graphics adapter,
   1392        1.1    gsutre  *  along with device-specific configuration information."
   1393        1.1    gsutre  *
   1394        1.1    gsutre  * "Every child device enumerated in the ACPI namespace under the graphics
   1395        1.1    gsutre  *  adapter must be specified in this list of devices.  Each display device
   1396        1.1    gsutre  *  must have its own ID, which is unique with respect to any other attachable
   1397        1.1    gsutre  *  devices enumerated."
   1398        1.1    gsutre  *
   1399        1.1    gsutre  * "Return value: a package containing a variable-length list of integers,
   1400        1.1    gsutre  *  each of which contains the 32-bit device attribute of a child device."
   1401        1.1    gsutre  */
   1402        1.1    gsutre 
   1403        1.1    gsutre static struct acpidisp_odinfo *
   1404        1.1    gsutre acpidisp_init_odinfo(const struct acpidisp_vga_softc *asc)
   1405        1.1    gsutre {
   1406        1.1    gsutre 	ACPI_HANDLE hdl = asc->sc_node->ad_handle;
   1407        1.1    gsutre 	ACPI_STATUS rv;
   1408        1.1    gsutre 	ACPI_OBJECT *pkg;
   1409        1.1    gsutre 	struct acpidisp_odinfo *oi;
   1410        1.1    gsutre 	struct acpidisp_outdev *devp;
   1411        1.1    gsutre 	uint32_t count, i;
   1412        1.1    gsutre 
   1413        1.1    gsutre 	if (!(asc->sc_caps & ACPI_DISP_VGA_CAP__DOD))
   1414        1.1    gsutre 		return NULL;
   1415        1.1    gsutre 
   1416        1.1    gsutre 	oi = NULL;
   1417        1.6    jruoho 	pkg = NULL;
   1418        1.1    gsutre 
   1419        1.1    gsutre 	rv = acpidisp_eval_package(hdl, "_DOD", &pkg, 1);
   1420        1.1    gsutre 	if (ACPI_FAILURE(rv))
   1421        1.1    gsutre 		goto fail;
   1422        1.1    gsutre 
   1423        1.1    gsutre 	/*
   1424        1.1    gsutre 	 * Allocate and fill the struct acpidisp_odinfo to be returned.
   1425        1.1    gsutre 	 */
   1426        1.1    gsutre 	oi = kmem_zalloc(sizeof(*oi), KM_SLEEP);
   1427        1.1    gsutre 	oi->oi_dev_count = pkg->Package.Count;
   1428        1.1    gsutre 	oi->oi_dev = kmem_zalloc(oi->oi_dev_count * sizeof(*oi->oi_dev),
   1429        1.1    gsutre 	    KM_SLEEP);
   1430        1.1    gsutre 
   1431        1.1    gsutre 	/*
   1432        1.1    gsutre 	 * Fill the array oi->oi_dev.
   1433        1.1    gsutre 	 */
   1434        1.1    gsutre 	for (count = 0, i = 0; i < pkg->Package.Count; i++) {
   1435        1.1    gsutre 		/* List of 32-bit integers (ACPI 4.0a, Sec. B.4.2). */
   1436        1.1    gsutre 		if (pkg->Package.Elements[i].Type != ACPI_TYPE_INTEGER ||
   1437        1.1    gsutre 		    pkg->Package.Elements[i].Integer.Value > UINT32_MAX)
   1438        1.1    gsutre 			continue;
   1439        1.1    gsutre 
   1440        1.1    gsutre 		oi->oi_dev[count].od_attrs.raw =
   1441        1.1    gsutre 		    (uint32_t)pkg->Package.Elements[i].Integer.Value;
   1442        1.1    gsutre 		count++;
   1443        1.1    gsutre 	}
   1444        1.1    gsutre 
   1445        1.1    gsutre 	if (count == 0) {
   1446        1.1    gsutre 		rv = AE_BAD_DATA;
   1447        1.1    gsutre 		goto fail;
   1448        1.1    gsutre 	}
   1449        1.1    gsutre 
   1450        1.1    gsutre 	ACPI_FREE(pkg);
   1451        1.1    gsutre 	pkg = NULL;
   1452        1.1    gsutre 
   1453        1.1    gsutre 	/*
   1454        1.1    gsutre 	 * Resize the array oi->oi_dev if needed.
   1455        1.1    gsutre 	 */
   1456        1.1    gsutre 	if (count < oi->oi_dev_count) {
   1457        1.1    gsutre 		devp = kmem_alloc(count * sizeof(*devp), KM_SLEEP);
   1458        1.1    gsutre 		(void)memcpy(devp, oi->oi_dev, count * sizeof(*devp));
   1459        1.1    gsutre 		kmem_free(oi->oi_dev, oi->oi_dev_count * sizeof(*oi->oi_dev));
   1460        1.1    gsutre 		oi->oi_dev = devp;
   1461        1.1    gsutre 		oi->oi_dev_count = count;
   1462        1.1    gsutre 	}
   1463        1.1    gsutre 
   1464        1.1    gsutre 	return oi;
   1465        1.1    gsutre 
   1466        1.1    gsutre  fail:
   1467        1.1    gsutre 	aprint_error_dev(asc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1468        1.1    gsutre 	    acpi_name(hdl), "_DOD", AcpiFormatException(rv));
   1469        1.1    gsutre 	if (pkg != NULL)
   1470        1.1    gsutre 		ACPI_FREE(pkg);
   1471        1.1    gsutre 	if (oi != NULL) {
   1472        1.1    gsutre 		if (oi->oi_dev != NULL)
   1473        1.1    gsutre 			kmem_free(oi->oi_dev,
   1474        1.1    gsutre 			    oi->oi_dev_count * sizeof(*oi->oi_dev));
   1475        1.1    gsutre 		kmem_free(oi, sizeof(*oi));
   1476        1.1    gsutre 	}
   1477        1.1    gsutre 	return NULL;
   1478        1.1    gsutre }
   1479        1.1    gsutre 
   1480        1.1    gsutre /*
   1481        1.1    gsutre  * acpidisp_vga_bind_outdevs:
   1482        1.1    gsutre  *
   1483        1.1    gsutre  *	Bind each acpiout device attached under an acpivga device to the
   1484        1.1    gsutre  *	corresponding (_DOD enumerated) connected output device.
   1485        1.1    gsutre  */
   1486        1.1    gsutre static void
   1487        1.1    gsutre acpidisp_vga_bind_outdevs(struct acpidisp_vga_softc *asc)
   1488        1.1    gsutre {
   1489        1.1    gsutre 	struct acpidisp_odinfo *oi = asc->sc_odinfo;
   1490        1.1    gsutre 	struct acpidisp_out_softc *osc;
   1491        1.1    gsutre 	struct acpidisp_outdev *od;
   1492        1.1    gsutre 	struct acpi_devnode *ad;
   1493        1.1    gsutre 	ACPI_HANDLE hdl;
   1494        1.7    gsutre 	ACPI_INTEGER val;
   1495        1.1    gsutre 	ACPI_STATUS rv;
   1496        1.1    gsutre 	uint16_t devid;
   1497        1.1    gsutre 	uint32_t i;
   1498        1.1    gsutre 
   1499        1.1    gsutre 	KASSERT(oi != NULL);
   1500        1.1    gsutre 
   1501        1.1    gsutre 	/* Reset all bindings. */
   1502        1.1    gsutre 	for (i = 0, od = oi->oi_dev; i < oi->oi_dev_count; i++, od++)
   1503        1.1    gsutre 		od->od_device = NULL;
   1504        1.1    gsutre 
   1505        1.1    gsutre 	/*
   1506        1.1    gsutre 	 * Iterate over all ACPI children that have been attached under this
   1507        1.1    gsutre 	 * acpivga device (as acpiout devices).
   1508        1.1    gsutre 	 */
   1509        1.1    gsutre 	SIMPLEQ_FOREACH(ad, &asc->sc_node->ad_child_head, ad_child_list) {
   1510        1.1    gsutre 		if ((ad->ad_device == NULL) ||
   1511        1.1    gsutre 		    (device_parent(ad->ad_device) != asc->sc_dev))
   1512        1.1    gsutre 			continue;
   1513        1.1    gsutre 
   1514        1.1    gsutre 		KASSERT(device_is_a(ad->ad_device, "acpiout"));
   1515        1.1    gsutre 
   1516        1.1    gsutre 		osc = device_private(ad->ad_device);
   1517        1.1    gsutre 
   1518        1.1    gsutre 		/*
   1519        1.1    gsutre 		 * For display output devices, the method _ADR returns
   1520        1.1    gsutre 		 * the device's ID (ACPI 4.0a, Sec. B.6.1).  We do not
   1521        1.1    gsutre 		 * cache the result of _ADR since it may vary.
   1522        1.1    gsutre 		 */
   1523        1.1    gsutre 		hdl = osc->sc_node->ad_handle;
   1524        1.1    gsutre 		rv = acpi_eval_integer(hdl, "_ADR", &val);
   1525        1.1    gsutre 		if (ACPI_FAILURE(rv)) {
   1526        1.1    gsutre 			aprint_error_dev(asc->sc_dev,
   1527        1.1    gsutre 			    "failed to evaluate %s.%s: %s\n",
   1528        1.1    gsutre 			    acpi_name(hdl), "_ADR", AcpiFormatException(rv));
   1529        1.1    gsutre 			continue;
   1530        1.1    gsutre 		}
   1531        1.1    gsutre 
   1532        1.1    gsutre 		/* The device ID is a 16-bit integer (ACPI 4.0a, Table B-2). */
   1533        1.1    gsutre 		devid = (uint16_t)val;
   1534        1.1    gsutre 
   1535        1.1    gsutre 		/*
   1536        1.1    gsutre 		 * The device ID must be unique (among output devices), and must
   1537        1.1    gsutre 		 * appear in the list returned by _DOD (ACPI 4.0a, Sec. B.6.1).
   1538        1.1    gsutre 		 */
   1539        1.1    gsutre 		for (i = 0, od = oi->oi_dev; i < oi->oi_dev_count; i++, od++) {
   1540        1.1    gsutre 			if (devid == od->od_attrs.device_id) {
   1541        1.1    gsutre 				if (od->od_device != NULL)
   1542        1.1    gsutre 					aprint_error_dev(asc->sc_dev,
   1543        1.1    gsutre 					    "%s has same device ID as %s\n",
   1544        1.1    gsutre 					    device_xname(osc->sc_dev),
   1545        1.1    gsutre 					    device_xname(od->od_device));
   1546        1.1    gsutre 				else
   1547        1.1    gsutre 					od->od_device = osc->sc_dev;
   1548        1.1    gsutre 				break;
   1549        1.1    gsutre 			}
   1550        1.1    gsutre 		}
   1551        1.1    gsutre 		if (i == oi->oi_dev_count)
   1552  1.16.16.1    martin 			aprint_debug_dev(asc->sc_dev,
   1553  1.16.16.1    martin 			    "output device %s not connected\n",
   1554        1.1    gsutre 			    device_xname(osc->sc_dev));
   1555        1.1    gsutre 	}
   1556        1.1    gsutre }
   1557        1.1    gsutre 
   1558        1.1    gsutre /*
   1559        1.1    gsutre  * Regarding _BCL (ACPI 4.0a, Sec. B.6.2):
   1560        1.1    gsutre  *
   1561        1.1    gsutre  * "This method allows the OS to query a list of brightness levels supported by
   1562        1.1    gsutre  *  built-in display output devices."
   1563        1.1    gsutre  *
   1564        1.1    gsutre  * "Return value: a variable-length package containing a list of integers
   1565        1.1    gsutre  *  representing the supported brightness levels.  Each integer has 8 bits of
   1566        1.1    gsutre  *  significant data."
   1567        1.1    gsutre  */
   1568        1.1    gsutre 
   1569        1.1    gsutre static struct acpidisp_brctl *
   1570        1.1    gsutre acpidisp_init_brctl(const struct acpidisp_out_softc *osc)
   1571        1.1    gsutre {
   1572        1.1    gsutre 	ACPI_HANDLE hdl = osc->sc_node->ad_handle;
   1573        1.1    gsutre 	ACPI_STATUS rv;
   1574        1.1    gsutre 	ACPI_OBJECT *pkg;
   1575        1.1    gsutre 	struct acpidisp_brctl *bc;
   1576        1.1    gsutre 	uint8_t *levelp;
   1577        1.1    gsutre 	uint32_t i;
   1578        1.1    gsutre 	int32_t j;
   1579        1.1    gsutre 	uint16_t count, k;
   1580        1.1    gsutre 	uint8_t level;
   1581        1.1    gsutre 
   1582        1.1    gsutre 	if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__BCL))
   1583        1.1    gsutre 		return NULL;
   1584        1.1    gsutre 
   1585        1.1    gsutre 	bc = NULL;
   1586        1.6    jruoho 	pkg = NULL;
   1587        1.1    gsutre 
   1588        1.1    gsutre 	rv = acpidisp_eval_package(hdl, "_BCL", &pkg, 2);
   1589        1.1    gsutre 	if (ACPI_FAILURE(rv))
   1590        1.1    gsutre 		goto fail;
   1591        1.1    gsutre 
   1592        1.1    gsutre 	/*
   1593        1.1    gsutre 	 * Allocate and fill the struct acpidisp_brctl to be returned.
   1594        1.1    gsutre 	 */
   1595        1.1    gsutre 	bc = kmem_zalloc(sizeof(*bc), KM_SLEEP);
   1596        1.1    gsutre 
   1597        1.1    gsutre 	/* At most 256 brightness levels (8-bit integers). */
   1598        1.1    gsutre 	if (pkg->Package.Count > 256)
   1599        1.1    gsutre 		bc->bc_level_count = 256;
   1600        1.1    gsutre 	else
   1601        1.1    gsutre 		bc->bc_level_count = (uint16_t)pkg->Package.Count;
   1602        1.1    gsutre 
   1603        1.1    gsutre 	bc->bc_level = kmem_zalloc(bc->bc_level_count * sizeof(*bc->bc_level),
   1604        1.1    gsutre 	    KM_SLEEP);
   1605        1.1    gsutre 
   1606        1.1    gsutre 	/*
   1607        1.1    gsutre 	 * Fill the array bc->bc_level with an insertion sort.
   1608        1.1    gsutre 	 */
   1609        1.1    gsutre 	for (count = 0, i = 0; i < pkg->Package.Count; i++) {
   1610        1.1    gsutre 		/* List of 8-bit integers (ACPI 4.0a, Sec. B.6.2). */
   1611        1.1    gsutre 		if (pkg->Package.Elements[i].Type != ACPI_TYPE_INTEGER ||
   1612        1.1    gsutre 		    pkg->Package.Elements[i].Integer.Value > UINT8_MAX)
   1613        1.1    gsutre 			continue;
   1614        1.1    gsutre 
   1615        1.1    gsutre 		level = (uint8_t)pkg->Package.Elements[i].Integer.Value;
   1616        1.1    gsutre 
   1617        1.1    gsutre 		/* Find the correct slot but do not modify the array yet. */
   1618        1.1    gsutre 		for (j = count; --j >= 0 && bc->bc_level[j] > level; );
   1619        1.1    gsutre 		if (j >= 0 && bc->bc_level[j] == level)
   1620        1.1    gsutre 			continue;
   1621        1.1    gsutre 		j++;
   1622        1.1    gsutre 
   1623        1.1    gsutre 		/* Make room for the new level. */
   1624        1.1    gsutre 		for (k = count; k > j; k--)
   1625        1.1    gsutre 			bc->bc_level[k] = bc->bc_level[k-1];
   1626        1.1    gsutre 
   1627        1.1    gsutre 		/* Insert the new level. */
   1628        1.1    gsutre 		bc->bc_level[j] = level;
   1629        1.1    gsutre 		count++;
   1630        1.1    gsutre 	}
   1631        1.1    gsutre 
   1632        1.1    gsutre 	if (count == 0) {
   1633        1.1    gsutre 		rv = AE_BAD_DATA;
   1634        1.1    gsutre 		goto fail;
   1635        1.1    gsutre 	}
   1636        1.1    gsutre 
   1637        1.1    gsutre 	ACPI_FREE(pkg);
   1638        1.1    gsutre 	pkg = NULL;
   1639        1.1    gsutre 
   1640        1.1    gsutre 	/*
   1641        1.1    gsutre 	 * Resize the array bc->bc_level if needed.
   1642        1.1    gsutre 	 */
   1643        1.1    gsutre 	if (count < bc->bc_level_count) {
   1644        1.1    gsutre 		levelp = kmem_alloc(count * sizeof(*levelp), KM_SLEEP);
   1645        1.1    gsutre 		(void)memcpy(levelp, bc->bc_level, count * sizeof(*levelp));
   1646        1.1    gsutre 		kmem_free(bc->bc_level,
   1647        1.1    gsutre 		    bc->bc_level_count * sizeof(*bc->bc_level));
   1648        1.1    gsutre 		bc->bc_level = levelp;
   1649        1.1    gsutre 		bc->bc_level_count = count;
   1650        1.1    gsutre 	}
   1651        1.1    gsutre 
   1652        1.1    gsutre 	return bc;
   1653        1.1    gsutre 
   1654        1.1    gsutre  fail:
   1655        1.1    gsutre 	aprint_error_dev(osc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1656        1.1    gsutre 	    acpi_name(hdl), "_BCL", AcpiFormatException(rv));
   1657        1.1    gsutre 	if (pkg != NULL)
   1658        1.1    gsutre 		ACPI_FREE(pkg);
   1659        1.1    gsutre 	if (bc != NULL) {
   1660        1.1    gsutre 		if (bc->bc_level != NULL)
   1661        1.1    gsutre 			kmem_free(bc->bc_level,
   1662        1.1    gsutre 			    bc->bc_level_count * sizeof(*bc->bc_level));
   1663        1.1    gsutre 		kmem_free(bc, sizeof(*bc));
   1664        1.1    gsutre 	}
   1665        1.1    gsutre 	return NULL;
   1666        1.1    gsutre }
   1667        1.1    gsutre 
   1668        1.1    gsutre /*
   1669        1.1    gsutre  * Evaluation of simple ACPI display methods.
   1670        1.1    gsutre  */
   1671        1.1    gsutre 
   1672        1.1    gsutre static int
   1673        1.1    gsutre acpidisp_set_policy(const struct acpidisp_vga_softc *asc, uint8_t value)
   1674        1.1    gsutre {
   1675        1.1    gsutre 	ACPI_HANDLE hdl = asc->sc_node->ad_handle;
   1676        1.7    gsutre 	ACPI_INTEGER val;
   1677        1.1    gsutre 	ACPI_STATUS rv;
   1678        1.1    gsutre 
   1679        1.1    gsutre 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: set %s: 0x%"PRIx8"\n",
   1680        1.1    gsutre 	    device_xname(asc->sc_dev), "policy", value));
   1681        1.1    gsutre 
   1682        1.1    gsutre 	if (!(asc->sc_caps & ACPI_DISP_VGA_CAP__DOS))
   1683        1.1    gsutre 		return ENODEV;
   1684        1.1    gsutre 
   1685        1.7    gsutre 	val = (ACPI_INTEGER)value;
   1686        1.1    gsutre 	rv = acpi_eval_set_integer(hdl, "_DOS", val);
   1687        1.1    gsutre 	if (ACPI_FAILURE(rv)) {
   1688        1.1    gsutre 		aprint_error_dev(asc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1689        1.1    gsutre 		    acpi_name(hdl), "_DOS", AcpiFormatException(rv));
   1690        1.1    gsutre 		return EIO;
   1691        1.1    gsutre 	}
   1692        1.1    gsutre 
   1693        1.1    gsutre 	return 0;
   1694        1.1    gsutre }
   1695        1.1    gsutre 
   1696        1.1    gsutre static int
   1697        1.1    gsutre acpidisp_get_status(const struct acpidisp_out_softc *osc, uint32_t *valuep)
   1698        1.1    gsutre {
   1699        1.1    gsutre 	ACPI_HANDLE hdl = osc->sc_node->ad_handle;
   1700        1.7    gsutre 	ACPI_INTEGER val;
   1701        1.1    gsutre 	ACPI_STATUS rv;
   1702        1.1    gsutre 
   1703        1.1    gsutre 	if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__DCS))
   1704        1.1    gsutre 		return ENODEV;
   1705        1.1    gsutre 
   1706        1.1    gsutre 	rv = acpi_eval_integer(hdl, "_DCS", &val);
   1707        1.1    gsutre 	if (ACPI_FAILURE(rv)) {
   1708        1.1    gsutre 		aprint_error_dev(osc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1709        1.1    gsutre 		    acpi_name(hdl), "_DCS", AcpiFormatException(rv));
   1710        1.1    gsutre 		return EIO;
   1711        1.1    gsutre 	}
   1712        1.1    gsutre 
   1713        1.1    gsutre 	if (val > UINT32_MAX)
   1714        1.1    gsutre 		return ERANGE;
   1715        1.1    gsutre 
   1716        1.1    gsutre 	*valuep = (uint32_t)val;
   1717        1.1    gsutre 
   1718        1.1    gsutre 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: get %s: 0x%"PRIx32"\n",
   1719        1.1    gsutre 	    device_xname(osc->sc_dev), "status", *valuep));
   1720        1.1    gsutre 
   1721        1.1    gsutre 	return 0;
   1722        1.1    gsutre }
   1723        1.1    gsutre 
   1724        1.1    gsutre static int
   1725        1.1    gsutre acpidisp_get_state(const struct acpidisp_out_softc *osc, uint32_t *valuep)
   1726        1.1    gsutre {
   1727        1.1    gsutre 	ACPI_HANDLE hdl = osc->sc_node->ad_handle;
   1728        1.7    gsutre 	ACPI_INTEGER val;
   1729        1.1    gsutre 	ACPI_STATUS rv;
   1730        1.1    gsutre 
   1731        1.1    gsutre 	if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__DGS))
   1732        1.1    gsutre 		return ENODEV;
   1733        1.1    gsutre 
   1734        1.1    gsutre 	rv = acpi_eval_integer(hdl, "_DGS", &val);
   1735        1.1    gsutre 	if (ACPI_FAILURE(rv)) {
   1736        1.1    gsutre 		aprint_error_dev(osc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1737        1.1    gsutre 		    acpi_name(hdl), "_DGS", AcpiFormatException(rv));
   1738        1.1    gsutre 		return EIO;
   1739        1.1    gsutre 	}
   1740        1.1    gsutre 
   1741        1.1    gsutre 	if (val > UINT32_MAX)
   1742        1.1    gsutre 		return ERANGE;
   1743        1.1    gsutre 
   1744        1.1    gsutre 	*valuep = (uint32_t)val;
   1745        1.1    gsutre 
   1746        1.1    gsutre 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: get %s: 0x%"PRIx32"\n",
   1747        1.1    gsutre 	    device_xname(osc->sc_dev), "state", *valuep));
   1748        1.1    gsutre 
   1749        1.1    gsutre 	return 0;
   1750        1.1    gsutre }
   1751        1.1    gsutre 
   1752        1.1    gsutre static int
   1753        1.1    gsutre acpidisp_set_state(const struct acpidisp_out_softc *osc, uint32_t value)
   1754        1.1    gsutre {
   1755        1.1    gsutre 	ACPI_HANDLE hdl = osc->sc_node->ad_handle;
   1756        1.7    gsutre 	ACPI_INTEGER val;
   1757        1.1    gsutre 	ACPI_STATUS rv;
   1758        1.1    gsutre 
   1759        1.1    gsutre 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: set %s: 0x%"PRIx32"\n",
   1760        1.1    gsutre 	    device_xname(osc->sc_dev), "state", value));
   1761        1.1    gsutre 
   1762        1.1    gsutre 	if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__DSS))
   1763        1.1    gsutre 		return ENODEV;
   1764        1.1    gsutre 
   1765        1.7    gsutre 	val = (ACPI_INTEGER)value;
   1766        1.1    gsutre 	rv = acpi_eval_set_integer(hdl, "_DSS", val);
   1767        1.1    gsutre 	if (ACPI_FAILURE(rv)) {
   1768        1.1    gsutre 		aprint_error_dev(osc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1769        1.1    gsutre 		    acpi_name(hdl), "_DSS", AcpiFormatException(rv));
   1770        1.1    gsutre 		return EIO;
   1771        1.1    gsutre 	}
   1772        1.1    gsutre 
   1773        1.1    gsutre 	return 0;
   1774        1.1    gsutre }
   1775        1.1    gsutre 
   1776        1.1    gsutre static int
   1777        1.1    gsutre acpidisp_get_brightness(const struct acpidisp_out_softc *osc, uint8_t *valuep)
   1778        1.1    gsutre {
   1779        1.1    gsutre 	ACPI_HANDLE hdl = osc->sc_node->ad_handle;
   1780        1.7    gsutre 	ACPI_INTEGER val;
   1781        1.1    gsutre 	ACPI_STATUS rv;
   1782        1.1    gsutre 
   1783        1.1    gsutre 	if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__BQC))
   1784        1.1    gsutre 		return ENODEV;
   1785        1.1    gsutre 
   1786        1.1    gsutre 	rv = acpi_eval_integer(hdl, "_BQC", &val);
   1787        1.1    gsutre 	if (ACPI_FAILURE(rv)) {
   1788        1.1    gsutre 		aprint_error_dev(osc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1789        1.1    gsutre 		    acpi_name(hdl), "_BQC", AcpiFormatException(rv));
   1790        1.1    gsutre 		return EIO;
   1791        1.1    gsutre 	}
   1792        1.1    gsutre 
   1793        1.1    gsutre 	if (val > UINT8_MAX)
   1794        1.1    gsutre 		return ERANGE;
   1795        1.1    gsutre 
   1796        1.1    gsutre 	*valuep = (uint8_t)val;
   1797        1.1    gsutre 
   1798        1.1    gsutre 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: get %s: %"PRIu8"\n",
   1799        1.1    gsutre 	    device_xname(osc->sc_dev), "brightness", *valuep));
   1800        1.1    gsutre 
   1801        1.1    gsutre 	return 0;
   1802        1.1    gsutre }
   1803        1.1    gsutre 
   1804        1.1    gsutre static int
   1805        1.1    gsutre acpidisp_set_brightness(const struct acpidisp_out_softc *osc, uint8_t value)
   1806        1.1    gsutre {
   1807        1.1    gsutre 	ACPI_HANDLE hdl = osc->sc_node->ad_handle;
   1808        1.7    gsutre 	ACPI_INTEGER val;
   1809        1.1    gsutre 	ACPI_STATUS rv;
   1810        1.1    gsutre 
   1811        1.1    gsutre 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "%s: set %s: %"PRIu8"\n",
   1812        1.1    gsutre 	    device_xname(osc->sc_dev), "brightness", value));
   1813        1.1    gsutre 
   1814        1.1    gsutre 	if (!(osc->sc_caps & ACPI_DISP_OUT_CAP__BCM))
   1815        1.1    gsutre 		return ENODEV;
   1816        1.1    gsutre 
   1817        1.7    gsutre 	val = (ACPI_INTEGER)value;
   1818        1.1    gsutre 	rv = acpi_eval_set_integer(hdl, "_BCM", val);
   1819        1.1    gsutre 	if (ACPI_FAILURE(rv)) {
   1820        1.1    gsutre 		aprint_error_dev(osc->sc_dev, "failed to evaluate %s.%s: %s\n",
   1821        1.1    gsutre 		    acpi_name(hdl), "_BCM", AcpiFormatException(rv));
   1822        1.1    gsutre 		return EIO;
   1823        1.1    gsutre 	}
   1824        1.1    gsutre 
   1825        1.1    gsutre 	return 0;
   1826        1.1    gsutre }
   1827        1.1    gsutre 
   1828        1.1    gsutre /*
   1829        1.1    gsutre  * Pretty printing.
   1830        1.1    gsutre  */
   1831        1.1    gsutre 
   1832        1.1    gsutre static void
   1833        1.1    gsutre acpidisp_print_odinfo(device_t self, const struct acpidisp_odinfo *oi)
   1834        1.1    gsutre {
   1835        1.1    gsutre 	struct acpidisp_outdev *od;
   1836        1.1    gsutre 	uint32_t i;
   1837        1.1    gsutre 
   1838        1.1    gsutre 	KASSERT(oi != NULL);
   1839        1.1    gsutre 
   1840        1.1    gsutre 	aprint_verbose_dev(self, "connected output devices:\n");
   1841        1.1    gsutre 	for (i = 0, od = oi->oi_dev; i < oi->oi_dev_count; i++, od++) {
   1842        1.1    gsutre 		aprint_verbose_dev(self, "  0x%04"PRIx16, od->od_attrs.device_id);
   1843        1.1    gsutre 		if (od->od_device != NULL)
   1844        1.1    gsutre 			aprint_verbose(" (%s)", device_xname(od->od_device));
   1845        1.1    gsutre 		aprint_verbose(": ");
   1846        1.1    gsutre 		acpidisp_print_od_attrs(od->od_attrs);
   1847        1.1    gsutre 		aprint_verbose("\n");
   1848        1.1    gsutre 	}
   1849        1.1    gsutre }
   1850        1.1    gsutre 
   1851       1.12  christos /*
   1852       1.12  christos  * general purpose range printing function
   1853       1.12  christos  * 1 -> 1
   1854       1.12  christos  * 1 2 4 6 7-> [1-2,4,6-7]
   1855       1.12  christos  */
   1856       1.12  christos static void
   1857       1.12  christos ranger(uint8_t *a, size_t l, void (*pr)(const char *, ...) __printflike(1, 2))
   1858       1.12  christos {
   1859       1.12  christos 	uint8_t b, e;
   1860       1.12  christos 
   1861       1.12  christos 	if (l > 1)
   1862       1.12  christos 		(*pr)("[");
   1863       1.12  christos 
   1864       1.12  christos 	for (size_t i = 0; i < l; i++) {
   1865       1.14  riastrad 		for (b = e = a[i]; i + 1 < l && a[i + 1] == e + 1; i++, e++)
   1866       1.12  christos 			continue;
   1867       1.12  christos 		(*pr)("%"PRIu8, b);
   1868       1.12  christos 		if (b != e)
   1869       1.12  christos 			(*pr)("-%"PRIu8, e);
   1870       1.12  christos 		if (i < l - 1)
   1871       1.12  christos 			(*pr)(",");
   1872       1.12  christos 	}
   1873       1.12  christos 
   1874       1.12  christos 	if (l > 1)
   1875       1.13  christos 		(*pr)("]");
   1876       1.12  christos }
   1877       1.12  christos 
   1878        1.1    gsutre static void
   1879        1.1    gsutre acpidisp_print_brctl(device_t self, const struct acpidisp_brctl *bc)
   1880        1.1    gsutre {
   1881        1.1    gsutre 	KASSERT(bc != NULL);
   1882        1.1    gsutre 
   1883       1.12  christos 	aprint_verbose_dev(self, "brightness levels: ");
   1884       1.12  christos 	ranger(bc->bc_level, bc->bc_level_count, aprint_verbose);
   1885        1.1    gsutre 	aprint_verbose("\n");
   1886        1.1    gsutre }
   1887        1.1    gsutre 
   1888        1.1    gsutre static void
   1889        1.1    gsutre acpidisp_print_od_attrs(acpidisp_od_attrs_t oda)
   1890        1.1    gsutre {
   1891        1.1    gsutre 	const char *type;
   1892        1.1    gsutre 
   1893        1.1    gsutre 	if (oda.fmt.device_id_scheme == 1) {
   1894        1.1    gsutre 		/* Uses the device ID scheme introduced in ACPI 3.0. */
   1895        1.1    gsutre 		switch (oda.fmt.type) {
   1896        1.1    gsutre 		case ACPI_DISP_OUT_ATTR_TYPE_OTHER:
   1897        1.1    gsutre 			type = "Other";
   1898        1.1    gsutre 			break;
   1899        1.1    gsutre 		case ACPI_DISP_OUT_ATTR_TYPE_VGA:
   1900        1.1    gsutre 			type = "VGA Analog Monitor";
   1901        1.1    gsutre 			break;
   1902        1.1    gsutre 		case ACPI_DISP_OUT_ATTR_TYPE_TV:
   1903        1.1    gsutre 			type = "TV/HDTV Monitor";
   1904        1.1    gsutre 			break;
   1905        1.1    gsutre 		case ACPI_DISP_OUT_ATTR_TYPE_EXTDIG:
   1906        1.1    gsutre 			type = "Ext. Digital Monitor";
   1907        1.1    gsutre 			break;
   1908        1.1    gsutre 		case ACPI_DISP_OUT_ATTR_TYPE_INTDFP:
   1909        1.1    gsutre 			type = "Int. Digital Flat Panel";
   1910        1.1    gsutre 			break;
   1911        1.1    gsutre 		default:
   1912        1.1    gsutre 			type = "Invalid";
   1913        1.1    gsutre 			break;
   1914        1.1    gsutre 		}
   1915        1.1    gsutre 
   1916        1.1    gsutre 		aprint_verbose("%s, index %d, port %d",
   1917        1.1    gsutre 		    type, oda.fmt.index, oda.fmt.port);
   1918        1.1    gsutre 	} else {
   1919        1.1    gsutre 		/* Uses vendor-specific device IDs. */
   1920        1.1    gsutre 		switch (oda.device_id) {
   1921        1.1    gsutre 		case ACPI_DISP_OUT_LEGACY_DEVID_MONITOR:
   1922        1.1    gsutre 			type = "Ext. Monitor";
   1923        1.1    gsutre 			break;
   1924        1.1    gsutre 		case ACPI_DISP_OUT_LEGACY_DEVID_PANEL:
   1925        1.1    gsutre 			type = "LCD Panel";
   1926        1.1    gsutre 			break;
   1927        1.1    gsutre 		case ACPI_DISP_OUT_LEGACY_DEVID_TV:
   1928        1.1    gsutre 			type = "TV";
   1929        1.1    gsutre 			break;
   1930        1.1    gsutre 		default:
   1931        1.1    gsutre 			type = "Unknown Output Device";
   1932        1.1    gsutre 			break;
   1933        1.1    gsutre 		}
   1934        1.1    gsutre 
   1935        1.1    gsutre 		aprint_verbose("%s", type);
   1936        1.1    gsutre 	}
   1937        1.1    gsutre 
   1938        1.1    gsutre 	aprint_verbose(", head %d", oda.fmt.head_id);
   1939        1.1    gsutre 	if (oda.fmt.bios_detect)
   1940        1.1    gsutre 		aprint_verbose(", bios detect");
   1941        1.1    gsutre 	if (oda.fmt.non_vga)
   1942        1.1    gsutre 		aprint_verbose(", non vga");
   1943        1.1    gsutre }
   1944        1.1    gsutre 
   1945        1.1    gsutre /*
   1946        1.1    gsutre  * General-purpose utility functions.
   1947        1.1    gsutre  */
   1948        1.1    gsutre 
   1949        1.1    gsutre /*
   1950        1.1    gsutre  * acpidisp_has_method:
   1951        1.1    gsutre  *
   1952        1.1    gsutre  *	Returns true if and only if (a) the object handle.path exists and
   1953        1.1    gsutre  *	(b) this object is a method or has the given type.
   1954        1.1    gsutre  */
   1955        1.1    gsutre static bool
   1956        1.1    gsutre acpidisp_has_method(ACPI_HANDLE handle, const char *path, ACPI_OBJECT_TYPE type)
   1957        1.1    gsutre {
   1958        1.1    gsutre 	ACPI_HANDLE hdl;
   1959        1.1    gsutre 	ACPI_OBJECT_TYPE typ;
   1960        1.1    gsutre 
   1961        1.1    gsutre 	KASSERT(handle != NULL);
   1962        1.1    gsutre 
   1963        1.1    gsutre 	if (ACPI_FAILURE(AcpiGetHandle(handle, path, &hdl)))
   1964        1.1    gsutre 		return false;
   1965        1.1    gsutre 
   1966        1.1    gsutre 	if (ACPI_FAILURE(AcpiGetType(hdl, &typ)))
   1967        1.1    gsutre 		return false;
   1968        1.1    gsutre 
   1969        1.1    gsutre 	if (typ != ACPI_TYPE_METHOD && typ != type)
   1970        1.1    gsutre 		return false;
   1971        1.1    gsutre 
   1972        1.1    gsutre 	return true;
   1973        1.1    gsutre }
   1974        1.1    gsutre 
   1975        1.1    gsutre /*
   1976        1.1    gsutre  * acpidisp_eval_package:
   1977        1.1    gsutre  *
   1978        1.1    gsutre  *	Evaluate a package (with an expected minimum number of elements).
   1979        1.1    gsutre  *	Caller must free *pkg by ACPI_FREE().
   1980        1.1    gsutre  */
   1981        1.1    gsutre static ACPI_STATUS
   1982        1.1    gsutre acpidisp_eval_package(ACPI_HANDLE handle, const char *path, ACPI_OBJECT **pkg,
   1983        1.1    gsutre     unsigned int mincount)
   1984        1.1    gsutre {
   1985        1.1    gsutre 	ACPI_BUFFER buf;
   1986        1.1    gsutre 	ACPI_OBJECT *obj;
   1987        1.1    gsutre 	ACPI_STATUS rv;
   1988        1.1    gsutre 
   1989        1.1    gsutre 	rv = acpi_eval_struct(handle, path, &buf);
   1990        1.1    gsutre 	if (ACPI_FAILURE(rv))
   1991        1.1    gsutre 		return rv;
   1992        1.1    gsutre 
   1993        1.1    gsutre 	if (buf.Length == 0 || buf.Pointer == NULL)
   1994        1.1    gsutre 		return AE_NULL_OBJECT;
   1995        1.1    gsutre 
   1996        1.1    gsutre 	obj = buf.Pointer;
   1997        1.1    gsutre 
   1998        1.1    gsutre 	if (obj->Type != ACPI_TYPE_PACKAGE) {
   1999        1.1    gsutre 		ACPI_FREE(obj);
   2000        1.1    gsutre 		return AE_TYPE;
   2001        1.1    gsutre 	}
   2002        1.1    gsutre 
   2003        1.1    gsutre 	if (obj->Package.Count < mincount) {
   2004        1.1    gsutre 		ACPI_FREE(obj);
   2005        1.1    gsutre 		return AE_BAD_DATA;
   2006        1.1    gsutre 	}
   2007        1.1    gsutre 
   2008        1.1    gsutre 	*pkg = obj;
   2009        1.1    gsutre 	return rv;
   2010        1.1    gsutre }
   2011        1.1    gsutre 
   2012        1.1    gsutre /*
   2013        1.1    gsutre  * acpidisp_array_search:
   2014        1.1    gsutre  *
   2015        1.1    gsutre  *	Look for a value v in a sorted array a of n integers (n > 0).  Fill *l
   2016        1.1    gsutre  *	and *u as follows:
   2017        1.1    gsutre  *
   2018        1.1    gsutre  *	   *l = Max {a[i] | a[i] <= v or i = 0}
   2019        1.1    gsutre  *	   *u = Min {a[i] | a[i] >= v or i = n-1}
   2020        1.1    gsutre  */
   2021        1.1    gsutre static void
   2022        1.1    gsutre acpidisp_array_search(const uint8_t *a, uint16_t n, int v, uint8_t *l, uint8_t *u)
   2023        1.1    gsutre {
   2024        1.1    gsutre 	uint16_t i, j, m;
   2025        1.1    gsutre 
   2026        1.1    gsutre 	if (v <= a[0]) {
   2027        1.1    gsutre 		*l = a[0];
   2028        1.1    gsutre 		*u = a[0];
   2029        1.1    gsutre 		return;
   2030        1.1    gsutre 	}
   2031        1.1    gsutre 	if (v >= a[n-1]) {
   2032        1.1    gsutre 		*l = a[n-1];
   2033        1.1    gsutre 		*u = a[n-1];
   2034        1.1    gsutre 		return;
   2035        1.1    gsutre 	}
   2036        1.1    gsutre 
   2037        1.1    gsutre 	for (i = 0, j = n - 1; j - i > 1; ) {
   2038        1.1    gsutre 		m = (i + j) / 2;
   2039        1.1    gsutre 
   2040        1.1    gsutre 		if (a[m] == v) {
   2041        1.1    gsutre 			*l = v;
   2042        1.1    gsutre 			*u = v;
   2043        1.1    gsutre 			return;
   2044        1.1    gsutre 		}
   2045        1.1    gsutre 
   2046        1.1    gsutre 		if (a[m] < v)
   2047        1.1    gsutre 			i = m;
   2048        1.1    gsutre 		else
   2049        1.1    gsutre 			j = m;
   2050        1.1    gsutre 	}
   2051        1.1    gsutre 
   2052        1.1    gsutre 	/* Here a[i] < v < a[j] and j = i + 1. */
   2053        1.1    gsutre 	*l = a[i];
   2054        1.1    gsutre 	*u = a[j];
   2055        1.1    gsutre 	return;
   2056        1.1    gsutre }
   2057        1.2    jruoho 
   2058        1.2    jruoho MODULE(MODULE_CLASS_DRIVER, acpivga, NULL);
   2059        1.2    jruoho 
   2060        1.9    jruoho #ifdef _MODULE
   2061        1.2    jruoho #include "ioconf.c"
   2062        1.9    jruoho #endif
   2063        1.2    jruoho 
   2064        1.2    jruoho static int
   2065        1.9    jruoho acpivga_modcmd(modcmd_t cmd, void *aux)
   2066        1.2    jruoho {
   2067        1.9    jruoho 	int rv = 0;
   2068        1.2    jruoho 
   2069        1.2    jruoho 	switch (cmd) {
   2070        1.2    jruoho 
   2071        1.2    jruoho 	case MODULE_CMD_INIT:
   2072        1.9    jruoho 
   2073        1.9    jruoho #ifdef _MODULE
   2074        1.9    jruoho 		rv = config_init_component(cfdriver_ioconf_acpivga,
   2075        1.2    jruoho 		    cfattach_ioconf_acpivga, cfdata_ioconf_acpivga);
   2076        1.9    jruoho #endif
   2077        1.9    jruoho 		break;
   2078        1.2    jruoho 
   2079        1.2    jruoho 	case MODULE_CMD_FINI:
   2080        1.9    jruoho 
   2081        1.9    jruoho #ifdef _MODULE
   2082        1.9    jruoho 		rv = config_fini_component(cfdriver_ioconf_acpivga,
   2083        1.2    jruoho 		    cfattach_ioconf_acpivga, cfdata_ioconf_acpivga);
   2084        1.9    jruoho #endif
   2085        1.9    jruoho 		break;
   2086        1.2    jruoho 
   2087        1.2    jruoho 	default:
   2088        1.9    jruoho 		rv = ENOTTY;
   2089        1.2    jruoho 	}
   2090        1.9    jruoho 
   2091        1.9    jruoho 	return rv;
   2092        1.2    jruoho }
   2093