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author | Dave Airlie <airlied@redhat.com> | 2013-06-28 09:50:34 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2013-06-28 09:50:34 +1000 |
commit | 28419261b09aa3a5118647b1ed93809ca97c5354 (patch) | |
tree | 5098381ee695009fce1fa4a25ba34d487eb4f35e /sound/pci/hda/hda_i915.c | |
parent | 4a009085978de90db40f9f38bcfad501f86ca959 (diff) | |
parent | 854c94a7854a4fabdd7db451cf1774e6dcba6bab (diff) | |
download | linux-28419261b09aa3a5118647b1ed93809ca97c5354.tar.bz2 |
Merge tag 'drm-intel-next-2013-06-18' of git://people.freedesktop.org/~danvet/drm-intel into drm-next
Last 3.11 feature pull. I have a few odds bits and pieces and fixes in my
queue, I'll sort them out later on to see what's for 3.11-fixes and what's
for 3.12. But nothing to hold this here up imo.
Highlights:
- more hangcheck work from Mika and Chris to prepare for arb robustness
- trickle feed fixes from Ville
- first parts of the shared pch pll rework, with some basic hw state
readout and cross-checking (this shuts up the confused pch pll refcount
WARN that Linus just recently forwarded)
- Haswell audio power well support from Wang Xingchao (alsa bits acked by
Takashi)
- some cleanups and asserts sprinkling around the plane/gamma enabling
sequence from Ville
- more gtt refactoring from Ben
- clear up the adjusted->mode vs. pixel clock vs. port clock confusion
- 30bpp support, this time for real hopefully
* tag 'drm-intel-next-2013-06-18' of git://people.freedesktop.org/~danvet/drm-intel: (97 commits)
drm/i915: remove a superflous semi-colon
drm/i915: Kill useless "Enable panel fitter" comments
drm/i915: Remove extra "ring" from error message
drm/i915: simplify the reduced clock handling for pch plls
drm/i915: stop killing pfit on i9xx
drm/i915: explicitly set up PIPECONF (and gamma table) on haswell
drm/i915: set up PIPECONF explicitly for i9xx/vlv platforms
drm/i915: set up PIPECONF explicitly on ilk-ivb
drm/i915: find guilty batch buffer on ring resets
drm/i915: store ring hangcheck action
drm/i915: add batch bo to i915_add_request()
drm/i915: change i915_add_request to macro
drm/i915: add i915_gem_context_get_hang_stats()
drm/i915: add struct i915_ctx_hang_stats
drm/i915: Try harder to disable trickle feed on VLV
drm/i915: fix up pch pll enabling for pixel multipliers
drm/i915: hw state readout and cross-checking for shared dplls
drm/i915: WARN on lack of shared dpll
drm/i915: split up intel_modeset_check_state
drm/i915: extract readout_hw_state from setup_hw_state
...
Conflicts:
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_fb.c
drivers/gpu/drm/i915/intel_sdvo.c
Diffstat (limited to 'sound/pci/hda/hda_i915.c')
-rw-r--r-- | sound/pci/hda/hda_i915.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_i915.c b/sound/pci/hda/hda_i915.c new file mode 100644 index 000000000000..76c13d5b3ca0 --- /dev/null +++ b/sound/pci/hda/hda_i915.c @@ -0,0 +1,75 @@ +/* + * hda_i915.c - routines for Haswell HDA controller power well support + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <sound/core.h> +#include <drm/i915_powerwell.h> +#include "hda_i915.h" + +static void (*get_power)(void); +static void (*put_power)(void); + +void hda_display_power(bool enable) +{ + if (!get_power || !put_power) + return; + + snd_printdd("HDA display power %s \n", + enable ? "Enable" : "Disable"); + if (enable) + get_power(); + else + put_power(); +} + +int hda_i915_init(void) +{ + int err = 0; + + get_power = symbol_request(i915_request_power_well); + if (!get_power) { + snd_printk(KERN_WARNING "hda-i915: get_power symbol get fail\n"); + return -ENODEV; + } + + put_power = symbol_request(i915_release_power_well); + if (!put_power) { + symbol_put(i915_request_power_well); + get_power = NULL; + return -ENODEV; + } + + snd_printd("HDA driver get symbol successfully from i915 module\n"); + + return err; +} + +int hda_i915_exit(void) +{ + if (get_power) { + symbol_put(i915_request_power_well); + get_power = NULL; + } + if (put_power) { + symbol_put(i915_release_power_well); + put_power = NULL; + } + + return 0; +} |