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NetBSD/sys/dev/hpc/bivideo.c
atatat 31144d9976 Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for 
indicating an unhandled "command".  ERESTART is -1, which can lead to
confusion.  ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4.  No ioctl code should now return -1 anywhere.  The
ioctl() system call is now properly restartable.
2002-03-17 19:40:26 +00:00

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/* $NetBSD: bivideo.c,v 1.13 2002/03/17 19:40:56 atatat Exp $ */
/*-
* Copyright (c) 1999-2001
* Shin Takemura and PocketBSD Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bivideo.c,v 1.13 2002/03/17 19:40:56 atatat Exp $");
#define FBDEBUG
static const char _copyright[] __attribute__ ((unused)) =
"Copyright (c) 1999 Shin Takemura. All rights reserved.";
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <sys/reboot.h>
#include <uvm/uvm_extern.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/bootinfo.h>
#include <machine/config_hook.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>
#include <dev/hpc/hpcfbvar.h>
#include <dev/hpc/hpcfbio.h>
#include <dev/hpc/bivideovar.h>
#include <dev/hpc/hpccmapvar.h>
#define VPRINTF(arg) do { if (bootverbose) printf arg; } while(0);
/*
* global variables
*/
int bivideo_dont_attach = 0;
/*
* function prototypes
*/
int bivideomatch(struct device *, struct cfdata *, void *);
void bivideoattach(struct device *, struct device *, void *);
int bivideo_ioctl(void *, u_long, caddr_t, int, struct proc *);
paddr_t bivideo_mmap(void *, off_t, int);
struct bivideo_softc {
struct device sc_dev;
struct hpcfb_fbconf sc_fbconf;
struct hpcfb_dspconf sc_dspconf;
void *sc_powerhook; /* power management hook */
int sc_powerstate;
#define PWRSTAT_SUSPEND (1<<0)
#define PWRSTAT_VIDEOOFF (1<<1)
#define PWRSTAT_LCD (1<<2)
#define PWRSTAT_BACKLIGHT (1<<3)
#define PWRSTAT_ALL (0xffffffff)
int sc_lcd_inited;
#define BACKLIGHT_INITED (1<<0)
#define BRIGHTNESS_INITED (1<<1)
#define CONTRAST_INITED (1<<2)
int sc_brightness;
int sc_brightness_save;
int sc_max_brightness;
int sc_contrast;
int sc_max_contrast;
};
static int bivideo_init(struct hpcfb_fbconf *);
static void bivideo_power(int, void *);
static void bivideo_update_powerstate(struct bivideo_softc *, int);
void bivideo_init_backlight(struct bivideo_softc *, int);
void bivideo_init_brightness(struct bivideo_softc *, int);
void bivideo_init_contrast(struct bivideo_softc *, int);
void bivideo_set_brightness(struct bivideo_softc *, int);
void bivideo_set_contrast(struct bivideo_softc *, int);
#if defined __mips__ || defined __sh__ || defined __arm__
#define __BTOP(x) ((paddr_t)(x) >> PGSHIFT)
#define __PTOB(x) ((paddr_t)(x) << PGSHIFT)
#else
#error "define btop, ptob."
#endif
/*
* static variables
*/
struct cfattach bivideo_ca = {
sizeof(struct bivideo_softc), bivideomatch, bivideoattach,
};
struct hpcfb_accessops bivideo_ha = {
bivideo_ioctl, bivideo_mmap
};
static int console_flag = 0;
static int attach_flag = 0;
/*
* function bodies
*/
int
bivideomatch(struct device *parent, struct cfdata *match, void *aux)
{
struct mainbus_attach_args *ma = aux;
if (bivideo_dont_attach ||
strcmp(ma->ma_name, match->cf_driver->cd_name))
return 0;
return (1);
}
void
bivideoattach(struct device *parent, struct device *self, void *aux)
{
struct bivideo_softc *sc = (struct bivideo_softc *)self;
struct hpcfb_attach_args ha;
if (attach_flag) {
panic("%s(%d): bivideo attached twice", __FILE__, __LINE__);
}
attach_flag = 1;
printf(": ");
if (bivideo_init(&sc->sc_fbconf) != 0) {
/* just return so that hpcfb will not be attached */
return;
}
printf("pseudo video controller");
if (console_flag) {
printf(", console");
}
printf("\n");
printf("%s: framebuffer address: 0x%08lx\n",
sc->sc_dev.dv_xname, (u_long)bootinfo->fb_addr);
/* Add a suspend hook to power saving */
sc->sc_powerstate = 0;
sc->sc_powerhook = powerhook_establish(bivideo_power, sc);
if (sc->sc_powerhook == NULL)
printf("%s: WARNING: unable to establish power hook\n",
sc->sc_dev.dv_xname);
/* initialize backlight brightness and lcd contrast */
sc->sc_lcd_inited = 0;
bivideo_init_brightness(sc, 1);
bivideo_init_contrast(sc, 1);
bivideo_init_backlight(sc, 1);
ha.ha_console = console_flag;
ha.ha_accessops = &bivideo_ha;
ha.ha_accessctx = sc;
ha.ha_curfbconf = 0;
ha.ha_nfbconf = 1;
ha.ha_fbconflist = &sc->sc_fbconf;
ha.ha_curdspconf = 0;
ha.ha_ndspconf = 1;
ha.ha_dspconflist = &sc->sc_dspconf;
config_found(self, &ha, hpcfbprint);
}
int
bivideo_getcnfb(struct hpcfb_fbconf *fb)
{
console_flag = 1;
return bivideo_init(fb);
}
static int
bivideo_init(struct hpcfb_fbconf *fb)
{
/*
* get fb settings from bootinfo
*/
if (bootinfo == NULL ||
bootinfo->fb_addr == 0 ||
bootinfo->fb_line_bytes == 0 ||
bootinfo->fb_width == 0 ||
bootinfo->fb_height == 0) {
printf("no frame buffer information.\n");
return (-1);
}
/* zero fill */
memset(fb, 0, sizeof(*fb));
fb->hf_conf_index = 0; /* configuration index */
fb->hf_nconfs = 1; /* how many configurations */
strcpy(fb->hf_name, "built-in video");
/* frame buffer name */
strcpy(fb->hf_conf_name, "default");
/* configuration name */
fb->hf_height = bootinfo->fb_height;
fb->hf_width = bootinfo->fb_width;
fb->hf_baseaddr = (u_long)bootinfo->fb_addr;
fb->hf_offset = (u_long)bootinfo->fb_addr -
__PTOB(__BTOP(bootinfo->fb_addr));
/* frame buffer start offset */
fb->hf_bytes_per_line = bootinfo->fb_line_bytes;
fb->hf_nplanes = 1;
fb->hf_bytes_per_plane = bootinfo->fb_height *
bootinfo->fb_line_bytes;
fb->hf_access_flags |= HPCFB_ACCESS_BYTE;
fb->hf_access_flags |= HPCFB_ACCESS_WORD;
fb->hf_access_flags |= HPCFB_ACCESS_DWORD;
switch (bootinfo->fb_type) {
/*
* gray scale
*/
case BIFB_D2_M2L_3:
case BIFB_D2_M2L_3x2:
fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
/* fall through */
case BIFB_D2_M2L_0:
case BIFB_D2_M2L_0x2:
fb->hf_class = HPCFB_CLASS_GRAYSCALE;
fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
fb->hf_pack_width = 8;
fb->hf_pixels_per_pack = 4;
fb->hf_pixel_width = 2;
fb->hf_class_data_length = sizeof(struct hf_gray_tag);
fb->hf_u.hf_gray.hf_flags = 0; /* reserved for future use */
break;
case BIFB_D4_M2L_F:
case BIFB_D4_M2L_Fx2:
fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
/* fall through */
case BIFB_D4_M2L_0:
case BIFB_D4_M2L_0x2:
fb->hf_class = HPCFB_CLASS_GRAYSCALE;
fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
fb->hf_pack_width = 8;
fb->hf_pixels_per_pack = 2;
fb->hf_pixel_width = 4;
fb->hf_class_data_length = sizeof(struct hf_gray_tag);
fb->hf_u.hf_gray.hf_flags = 0; /* reserved for future use */
break;
/*
* indexed color
*/
case BIFB_D8_FF:
fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
/* fall through */
case BIFB_D8_00:
fb->hf_class = HPCFB_CLASS_INDEXCOLOR;
fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
fb->hf_pack_width = 8;
fb->hf_pixels_per_pack = 1;
fb->hf_pixel_width = 8;
fb->hf_class_data_length = sizeof(struct hf_indexed_tag);
fb->hf_u.hf_indexed.hf_flags = 0; /* reserved for future use */
break;
/*
* RGB color
*/
case BIFB_D16_FFFF:
fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
/* fall through */
case BIFB_D16_0000:
fb->hf_class = HPCFB_CLASS_RGBCOLOR;
fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
#if BYTE_ORDER == LITTLE_ENDIAN
fb->hf_order_flags = HPCFB_REVORDER_BYTE;
#endif
fb->hf_pack_width = 16;
fb->hf_pixels_per_pack = 1;
fb->hf_pixel_width = 16;
fb->hf_class_data_length = sizeof(struct hf_rgb_tag);
fb->hf_u.hf_rgb.hf_flags = 0; /* reserved for future use */
fb->hf_u.hf_rgb.hf_red_width = 5;
fb->hf_u.hf_rgb.hf_red_shift = 11;
fb->hf_u.hf_rgb.hf_green_width = 6;
fb->hf_u.hf_rgb.hf_green_shift = 5;
fb->hf_u.hf_rgb.hf_blue_width = 5;
fb->hf_u.hf_rgb.hf_blue_shift = 0;
fb->hf_u.hf_rgb.hf_alpha_width = 0;
fb->hf_u.hf_rgb.hf_alpha_shift = 0;
break;
default:
printf("unsupported type %d.\n", bootinfo->fb_type);
return (-1);
break;
}
return (0); /* no error */
}
static void
bivideo_power(int why, void *arg)
{
struct bivideo_softc *sc = arg;
switch (why) {
case PWR_SUSPEND:
case PWR_STANDBY:
sc->sc_powerstate |= PWRSTAT_SUSPEND;
bivideo_update_powerstate(sc, PWRSTAT_ALL);
break;
case PWR_RESUME:
sc->sc_powerstate &= ~PWRSTAT_SUSPEND;
bivideo_update_powerstate(sc, PWRSTAT_ALL);
break;
}
}
static void
bivideo_update_powerstate(struct bivideo_softc *sc, int updates)
{
if (updates & PWRSTAT_LCD)
config_hook_call(CONFIG_HOOK_POWERCONTROL,
CONFIG_HOOK_POWERCONTROL_LCD,
(void*)!(sc->sc_powerstate &
(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)));
if (updates & PWRSTAT_BACKLIGHT)
config_hook_call(CONFIG_HOOK_POWERCONTROL,
CONFIG_HOOK_POWERCONTROL_LCDLIGHT,
(void*)(!(sc->sc_powerstate &
(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)) &&
(sc->sc_powerstate & PWRSTAT_BACKLIGHT)));
}
int
bivideo_ioctl(void *v, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct bivideo_softc *sc = (struct bivideo_softc *)v;
struct hpcfb_fbconf *fbconf;
struct hpcfb_dspconf *dspconf;
struct wsdisplay_cmap *cmap;
struct wsdisplay_param *dispparam;
switch (cmd) {
case WSDISPLAYIO_GETCMAP:
cmap = (struct wsdisplay_cmap*)data;
if (sc->sc_fbconf.hf_class != HPCFB_CLASS_INDEXCOLOR ||
sc->sc_fbconf.hf_pack_width != 8 ||
256 <= cmap->index ||
256 < (cmap->index + cmap->count))
return (EINVAL);
if (!uvm_useracc(cmap->red, cmap->count, B_WRITE) ||
!uvm_useracc(cmap->green, cmap->count, B_WRITE) ||
!uvm_useracc(cmap->blue, cmap->count, B_WRITE))
return (EFAULT);
copyout(&bivideo_cmap_r[cmap->index], cmap->red, cmap->count);
copyout(&bivideo_cmap_g[cmap->index], cmap->green,cmap->count);
copyout(&bivideo_cmap_b[cmap->index], cmap->blue, cmap->count);
return (0);
case WSDISPLAYIO_PUTCMAP:
/*
* This driver can't set color map.
*/
return (EINVAL);
case WSDISPLAYIO_SVIDEO:
if (*(int *)data == WSDISPLAYIO_VIDEO_OFF)
sc->sc_powerstate |= PWRSTAT_VIDEOOFF;
else
sc->sc_powerstate &= ~PWRSTAT_VIDEOOFF;
bivideo_update_powerstate(sc, PWRSTAT_ALL);
return 0;
case WSDISPLAYIO_GVIDEO:
*(int *)data = (sc->sc_powerstate&PWRSTAT_VIDEOOFF) ?
WSDISPLAYIO_VIDEO_OFF:WSDISPLAYIO_VIDEO_ON;
return 0;
case WSDISPLAYIO_GETPARAM:
dispparam = (struct wsdisplay_param*)data;
switch (dispparam->param) {
case WSDISPLAYIO_PARAM_BACKLIGHT:
VPRINTF(("bivideo_ioctl: GET:BACKLIGHT\n"));
bivideo_init_brightness(sc, 0);
bivideo_init_backlight(sc, 0);
VPRINTF(("bivideo_ioctl: GET:(real)BACKLIGHT %d\n",
(sc->sc_powerstate&PWRSTAT_BACKLIGHT)? 1: 0));
dispparam->min = 0;
dispparam->max = 1;
if (sc->sc_max_brightness > 0)
dispparam->curval = sc->sc_brightness > 0? 1: 0;
else
dispparam->curval =
(sc->sc_powerstate&PWRSTAT_BACKLIGHT) ? 1: 0;
VPRINTF(("bivideo_ioctl: GET:BACKLIGHT:%d(%s)\n",
dispparam->curval,
sc->sc_max_brightness > 0? "brightness": "light"));
return 0;
break;
case WSDISPLAYIO_PARAM_CONTRAST:
VPRINTF(("bivideo_ioctl: GET:CONTRAST\n"));
bivideo_init_contrast(sc, 0);
if (sc->sc_max_contrast > 0) {
dispparam->min = 0;
dispparam->max = sc->sc_max_contrast;
dispparam->curval = sc->sc_contrast;
VPRINTF(("bivideo_ioctl: GET:CONTRAST max=%d, current=%d\n", sc->sc_max_contrast, sc->sc_contrast));
return 0;
} else {
VPRINTF(("bivideo_ioctl: GET:CONTRAST EINVAL\n"));
return (EINVAL);
}
break;
case WSDISPLAYIO_PARAM_BRIGHTNESS:
VPRINTF(("bivideo_ioctl: GET:BRIGHTNESS\n"));
bivideo_init_brightness(sc, 0);
if (sc->sc_max_brightness > 0) {
dispparam->min = 0;
dispparam->max = sc->sc_max_brightness;
dispparam->curval = sc->sc_brightness;
VPRINTF(("bivideo_ioctl: GET:BRIGHTNESS max=%d, current=%d\n", sc->sc_max_brightness, sc->sc_brightness));
return 0;
} else {
VPRINTF(("bivideo_ioctl: GET:BRIGHTNESS EINVAL\n"));
return (EINVAL);
}
return (EINVAL);
default:
return (EINVAL);
}
return (0);
case WSDISPLAYIO_SETPARAM:
dispparam = (struct wsdisplay_param*)data;
switch (dispparam->param) {
case WSDISPLAYIO_PARAM_BACKLIGHT:
VPRINTF(("bivideo_ioctl: SET:BACKLIGHT\n"));
if (dispparam->curval < 0 ||
1 < dispparam->curval)
return (EINVAL);
bivideo_init_brightness(sc, 0);
VPRINTF(("bivideo_ioctl: SET:max brightness=%d\n", sc->sc_max_brightness));
if (sc->sc_max_brightness > 0) { /* dimmer */
if (dispparam->curval == 0){
sc->sc_brightness_save = sc->sc_brightness;
bivideo_set_brightness(sc, 0); /* min */
} else {
if (sc->sc_brightness_save == 0)
sc->sc_brightness_save = sc->sc_max_brightness;
bivideo_set_brightness(sc, sc->sc_brightness_save);
}
VPRINTF(("bivideo_ioctl: SET:BACKLIGHT:brightness=%d\n", sc->sc_brightness));
} else { /* off */
if (dispparam->curval == 0)
sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
else
sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
VPRINTF(("bivideo_ioctl: SET:BACKLIGHT:powerstate %d\n",
(sc->sc_powerstate & PWRSTAT_BACKLIGHT)?1:0));
bivideo_update_powerstate(sc, PWRSTAT_BACKLIGHT);
VPRINTF(("bivideo_ioctl: SET:BACKLIGHT:%d\n",
(sc->sc_powerstate & PWRSTAT_BACKLIGHT)?1:0));
}
return 0;
break;
case WSDISPLAYIO_PARAM_CONTRAST:
VPRINTF(("bivideo_ioctl: SET:CONTRAST\n"));
bivideo_init_contrast(sc, 0);
if (dispparam->curval < 0 ||
sc->sc_max_contrast < dispparam->curval)
return (EINVAL);
if (sc->sc_max_contrast > 0) {
int org = sc->sc_contrast;
bivideo_set_contrast(sc, dispparam->curval);
VPRINTF(("bivideo_ioctl: SET:CONTRAST org=%d, current=%d\n", org, sc->sc_contrast));
return 0;
} else {
VPRINTF(("bivideo_ioctl: SET:CONTRAST EINVAL\n"));
return (EINVAL);
}
break;
case WSDISPLAYIO_PARAM_BRIGHTNESS:
VPRINTF(("bivideo_ioctl: SET:BRIGHTNESS\n"));
bivideo_init_brightness(sc, 0);
if (dispparam->curval < 0 ||
sc->sc_max_brightness < dispparam->curval)
return (EINVAL);
if (sc->sc_max_brightness > 0) {
int org = sc->sc_brightness;
bivideo_set_brightness(sc, dispparam->curval);
VPRINTF(("bivideo_ioctl: SET:BRIGHTNESS org=%d, current=%d\n", org, sc->sc_brightness));
return 0;
} else {
VPRINTF(("bivideo_ioctl: SET:BRIGHTNESS EINVAL\n"));
return (EINVAL);
}
break;
default:
return (EINVAL);
}
return (0);
case HPCFBIO_GCONF:
fbconf = (struct hpcfb_fbconf *)data;
if (fbconf->hf_conf_index != 0 &&
fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
return (EINVAL);
}
*fbconf = sc->sc_fbconf; /* structure assignment */
return (0);
case HPCFBIO_SCONF:
fbconf = (struct hpcfb_fbconf *)data;
if (fbconf->hf_conf_index != 0 &&
fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
return (EINVAL);
}
/*
* nothing to do because we have only one configration
*/
return (0);
case HPCFBIO_GDSPCONF:
dspconf = (struct hpcfb_dspconf *)data;
if ((dspconf->hd_unit_index != 0 &&
dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
(dspconf->hd_conf_index != 0 &&
dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
return (EINVAL);
}
*dspconf = sc->sc_dspconf; /* structure assignment */
return (0);
case HPCFBIO_SDSPCONF:
dspconf = (struct hpcfb_dspconf *)data;
if ((dspconf->hd_unit_index != 0 &&
dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
(dspconf->hd_conf_index != 0 &&
dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
return (EINVAL);
}
/*
* nothing to do
* because we have only one unit and one configration
*/
return (0);
case HPCFBIO_GOP:
case HPCFBIO_SOP:
/*
* curently not implemented...
*/
return (EINVAL);
}
return (EPASSTHROUGH);
}
paddr_t
bivideo_mmap(void *ctx, off_t offset, int prot)
{
struct bivideo_softc *sc = (struct bivideo_softc *)ctx;
if (offset < 0 ||
(sc->sc_fbconf.hf_bytes_per_plane +
sc->sc_fbconf.hf_offset) < offset)
return -1;
return __BTOP((u_long)bootinfo->fb_addr + offset);
}
void
bivideo_init_backlight(struct bivideo_softc *sc, int inattach)
{
int val = -1;
if (sc->sc_lcd_inited&BACKLIGHT_INITED)
return;
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_POWER_LCDLIGHT, &val) != -1) {
/* we can get real light state */
VPRINTF(("bivideo_init_backlight: real backlight=%d\n", val));
if (val == 0)
sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
else
sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
sc->sc_lcd_inited |= BACKLIGHT_INITED;
} else if (inattach) {
/*
we cannot get real light state in attach time
because light device not yet attached.
we will retry in !inattach.
temporary assume light is on.
*/
sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
} else {
/* we cannot get real light state, so work by myself state */
sc->sc_lcd_inited |= BACKLIGHT_INITED;
}
}
void
bivideo_init_brightness(struct bivideo_softc *sc, int inattach)
{
int val = -1;
if (sc->sc_lcd_inited&BRIGHTNESS_INITED)
return;
VPRINTF(("bivideo_init_brightness\n"));
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_BRIGHTNESS_MAX, &val) != -1) {
/* we can get real brightness max */
VPRINTF(("bivideo_init_brightness: real brightness max=%d\n", val));
sc->sc_max_brightness = val;
val = -1;
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
/* we can get real brightness */
VPRINTF(("bivideo_init_brightness: real brightness=%d\n", val));
sc->sc_brightness_save = sc->sc_brightness = val;
} else {
sc->sc_brightness_save =
sc->sc_brightness = sc->sc_max_brightness;
}
sc->sc_lcd_inited |= BRIGHTNESS_INITED;
} else if (inattach) {
/*
we cannot get real brightness in attach time
because brightness device not yet attached.
we will retry in !inattach.
*/
sc->sc_max_brightness = -1;
sc->sc_brightness = -1;
sc->sc_brightness_save = -1;
} else {
/* we cannot get real brightness */
sc->sc_lcd_inited |= BRIGHTNESS_INITED;
}
return;
}
void
bivideo_init_contrast(struct bivideo_softc *sc, int inattach)
{
int val = -1;
if (sc->sc_lcd_inited&CONTRAST_INITED)
return;
VPRINTF(("bivideo_init_contrast\n"));
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_CONTRAST_MAX, &val) != -1) {
/* we can get real contrast max */
VPRINTF(("bivideo_init_contrast: real contrast max=%d\n", val));
sc->sc_max_contrast = val;
val = -1;
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_CONTRAST, &val) != -1) {
/* we can get real contrast */
VPRINTF(("bivideo_init_contrast: real contrast=%d\n", val));
sc->sc_contrast = val;
} else {
sc->sc_contrast = sc->sc_max_contrast;
}
sc->sc_lcd_inited |= CONTRAST_INITED;
} else if (inattach) {
/*
we cannot get real contrast in attach time
because contrast device not yet attached.
we will retry in !inattach.
*/
sc->sc_max_contrast = -1;
sc->sc_contrast = -1;
} else {
/* we cannot get real contrast */
sc->sc_lcd_inited |= CONTRAST_INITED;
}
return;
}
void
bivideo_set_brightness(struct bivideo_softc *sc, int val)
{
sc->sc_brightness = val;
config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, &val);
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
sc->sc_brightness = val;
}
}
void
bivideo_set_contrast(struct bivideo_softc *sc, int val)
{
sc->sc_contrast = val;
config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_CONTRAST, &val);
if (config_hook_call(CONFIG_HOOK_GET,
CONFIG_HOOK_CONTRAST, &val) != -1) {
sc->sc_contrast = val;
}
}
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