[alsa-devel] Patch for power on headphone amp on Realtek 883

[Takashi Iwai]

The complete context is missing: on which machine, what this patch
really fixes, why it's needed, how it achieves, and which kernel to be
applied.

Please give details.  It's much more important than the code change.


thanks,

Takashi

At Mon, 09 Jun 2014 10:06:59 +0300,
asd wrote:
> 
> Index: hda/hda_codec.h
> ===================================================================
> --- hda.orig/hda_codec.h	2014-06-08 22:54:07.000000000 +0300
> +++ hda/hda_codec.h	2014-06-09 09:43:42.359115743 +0300
> @@ -259,6 +259,7 @@
>  	HDA_PCM_NTYPES
>  };
>  
> +
>  /* for PCM creation */
>  struct hda_pcm {
>  	char *name;
> @@ -287,6 +288,14 @@
>  	u32 subsystem_id;
>  	u32 revision_id;
>  
> +	/* custom pin complex headphone amp */
> +	bool hp_set;
> +	hda_nid_t hp_front;
> +	hda_nid_t hp_rear;
> +	hda_nid_t hp_clfe;
> +	hda_nid_t hp_side;
> +	hda_nid_t hp_fout;
> +
>  	/* detected preset */
>  	const struct hda_codec_preset *preset;
>  	struct module *owner;
> Index: hda/patch_realtek.c
> ===================================================================
> --- hda.orig/patch_realtek.c	2014-06-07 12:38:24.000000000 +0300
> +++ hda/patch_realtek.c	2014-06-09 09:22:53.306622242 +0300
> @@ -322,6 +322,12 @@
>  		case 0x10ec0880:
>  		case 0x10ec0882:
>  		case 0x10ec0883:
> +			codec->hp_set = 1;
> +			codec->hp_front = 0x14;
> +			codec->hp_rear = 0x15;
> +			codec->hp_clfe = 0x16;
> +			codec->hp_side = 0x17;
> +			codec->hp_fout = 0x1b;
>  		case 0x10ec0885:
>  		case 0x10ec0887:
>  		/*case 0x10ec0889:*/ /* this causes an SPDIF problem */
> Index: hda/hda_codec.c
> ===================================================================
> --- hda.orig/hda_codec.c	2014-06-08 22:54:07.000000000 +0300
> +++ hda/hda_codec.c	2014-06-09 09:45:32.473468469 +0300
> @@ -27,6 +27,7 @@
>  #include <linux/mutex.h>
>  #include <linux/module.h>
>  #include <linux/async.h>
> +#include <linux/delay.h>
>  #include <sound/core.h>
>  #include "hda_codec.h"
>  #include <sound/asoundef.h>
> @@ -120,6 +121,56 @@
>  #define hda_call_pm_notify(codec, state) {}
>  #endif
>  
> +static void enable_hp_codec(struct hda_codec *codec)
> +{
> +
> +	mutex_unlock(&codec->control_mutex);
> +	if ((codec->hp_set = 1)) {
> +	snd_hda_codec_write(codec, codec->hp_front, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0xc0);
> +
> +	snd_hda_codec_write(codec, codec->hp_rear, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0xc0);
> +
> +	snd_hda_codec_write(codec, codec->hp_clfe, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0xc0);
> +
> +	snd_hda_codec_write(codec, codec->hp_side, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0xc0);
> +
> +	snd_hda_codec_write(codec, codec->hp_fout, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0xc0);
> +	} 
> +
> +	mutex_lock(&codec->control_mutex);
> +
> +}
> +
> +static void mute_all_analog_outs(struct hda_codec *codec)
> +{
> +	mutex_unlock(&codec->control_mutex);
> +	if ((codec->hp_set = 1)) {
> +	snd_hda_codec_write(codec,codec->hp_front, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0x0);
> +
> +	snd_hda_codec_write(codec,codec->hp_rear, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0x0);
> +
> +	snd_hda_codec_write(codec,codec->hp_clfe, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0x0);
> +
> +	snd_hda_codec_write(codec,codec->hp_side, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0x0);
> +
> +	snd_hda_codec_write(codec,codec->hp_fout, 0,
> +			    AC_VERB_SET_PIN_WIDGET_CONTROL, 0x0);
> +	}
> +	mutex_lock(&codec->control_mutex);
> +}
> +
> +
> +
> +
>  /**
>   * snd_hda_get_jack_location - Give a location string of the jack
>   * @cfg: pin default config value
> @@ -5418,8 +5469,9 @@
>  				/* FIXME: need notify? */
>  			}
>  		}
> -		mutex_unlock(&codec->spdif_mutex);
> +		mutex_unlock(&codec->spdif_mutex);    
>  	}
> +	enable_hp_codec(codec);
>  	return snd_pcm_hw_constraint_step(substream->runtime, 0,
>  					  SNDRV_PCM_HW_PARAM_CHANNELS, 2);
>  }
> @@ -5530,6 +5582,7 @@
>  		mout->dig_out_used = 0;
>  	}
>  	mutex_unlock(&codec->spdif_mutex);
> +	mute_all_analog_outs(codec);
>  	return 0;
>  }
>  EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup);
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