mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-14 14:34:28 +08:00
4e76a8833f
Use dev_err() and co for messages from HD-audio controller and codec drivers. The codec drivers are mostly bound with codec objects, so some helper macros, codec_err(), codec_info(), etc, are provided. They merely wrap the corresponding dev_xxx(). There are a few places still calling snd_printk() and its variants as they are called without the codec or device context. Signed-off-by: Takashi Iwai <tiwai@suse.de>
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
|
|
* 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;
|
|
|
|
pr_debug("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) {
|
|
pr_warn("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;
|
|
}
|
|
|
|
pr_debug("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;
|
|
}
|