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Add an OpenBSD-specific implementation of backlight control that uses the

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appropriate wscons ioctls.

ok matthieu@
This commit is contained in:
kettenis 2013-03-19 20:47:22 +00:00
parent da8e23aecc
commit d890a3469b
1 changed files with 69 additions and 6 deletions
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75
driver/xf86-video-intel/src/intel_display.c
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@ -53,6 +53,11 @@
#include "intel_glamor.h"
#ifdef __OpenBSD__
#include <dev/wscons/wsconsio.h>
#include "xf86Priv.h"
#endif
#define KNOWN_MODE_FLAGS ((1<<14)-1)
struct intel_mode {
@ -127,6 +132,69 @@ intel_output_dpms(xf86OutputPtr output, int mode);
static void
intel_output_dpms_backlight(xf86OutputPtr output, int oldmode, int mode);
static inline int
crtc_id(struct intel_crtc *crtc)
{
return crtc->mode_crtc->crtc_id;
}
#ifdef __OpenBSD__
static void
intel_output_backlight_set(xf86OutputPtr output, int level)
{
struct intel_output *intel_output = output->driver_private;
struct wsdisplay_param param;
if (level > intel_output->backlight_max)
level = intel_output->backlight_max;
if (! intel_output->backlight_iface || level < 0)
return;
param.param = WSDISPLAYIO_PARAM_BRIGHTNESS;
param.curval = level;
if (ioctl(xf86Info.consoleFd, WSDISPLAYIO_SETPARAM, &param) == -1) {
xf86DrvMsg(output->scrn->scrnIndex, X_ERROR,
"Failed to set backlight level: %s\n",
strerror(errno));
}
}
static int
intel_output_backlight_get(xf86OutputPtr output)
{
struct wsdisplay_param param;
param.param = WSDISPLAYIO_PARAM_BRIGHTNESS;
if (ioctl(xf86Info.consoleFd, WSDISPLAYIO_GETPARAM, &param) == -1) {
xf86DrvMsg(output->scrn->scrnIndex, X_ERROR,
"Failed to get backlight level: %s\n",
strerror(errno));
return -1;
}
return param.curval;
}
static void
intel_output_backlight_init(xf86OutputPtr output)
{
struct intel_output *intel_output = output->driver_private;
struct wsdisplay_param param;
param.param = WSDISPLAYIO_PARAM_BRIGHTNESS;
if (ioctl(xf86Info.consoleFd, WSDISPLAYIO_GETPARAM, &param) == -1) {
intel_output->backlight_iface = NULL;
return;
}
intel_output->backlight_iface = "wscons";
intel_output->backlight_max = param.max;
intel_output->backlight_active_level = param.curval;
}
#else
#define BACKLIGHT_CLASS "/sys/class/backlight"
/*
@ -155,12 +223,6 @@ static const char *backlight_interfaces[] = {
/* Enough for 10 digits of backlight + '\n' + '\0' */
#define BACKLIGHT_VALUE_LEN 12
static inline int
crtc_id(struct intel_crtc *crtc)
{
return crtc->mode_crtc->crtc_id;
}
static void
intel_output_backlight_set(xf86OutputPtr output, int level)
{
@ -297,6 +359,7 @@ intel_output_backlight_init(xf86OutputPtr output)
intel_output->backlight_iface = NULL;
}
#endif
static void
mode_from_kmode(ScrnInfoPtr scrn,