| commit | 078a033f45471c44befd72ccacf3f31d75299dba | |
| author | Li Peng <peng.li@linux.intel.com> | |
| Tue, 15 Sep 2009 05:03:36 +0000 (15 13:03 +0800) | ||
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | |
| Thu, 17 Sep 2009 21:32:08 +0000 (17 14:32 -0700) | ||
| tree | dc5b9c868684b28040fdafaeeef57cb6489feb8e | treesnapshot (tar.gz zip) |
| parent | 8dd81a381e8886129c0923f1fe22ff5ca36ae8da | commitdiff |
drm/i915: fix opregion backlight chip detect and range
BLC_PWM_CTL2 is for 965+ only, so add device model check for
legacy backlight control.
For native backlight control, it maps the backlight value (0~255)
in opregion ASLE[BCLP] to backlight duty cycle (0~max_backlight)
and set into control register.
It also add support for IGD device, which follows opregion spec.
Signed-off-by: Li Peng <peng.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
BLC_PWM_CTL2 is for 965+ only, so add device model check for
legacy backlight control.
For native backlight control, it maps the backlight value (0~255)
in opregion ASLE[BCLP] to backlight duty cycle (0~max_backlight)
and set into control register.
It also add support for IGD device, which follows opregion spec.
Signed-off-by: Li Peng <peng.li@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| drivers/gpu/drm/i915/i915_opregion.c | diffblobblamehistory |