Commit bf0ff87b authored by Adrian Knoth's avatar Adrian Knoth Committed by Takashi Iwai
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ALSA: hdspm - Implement generic function to toggle settings 



The driver contains at least six similar functions that change only a
single bit in the control register, only the bit position varies.

This patch implements a generic function to toggle a certain bit
position that will be used to replace the old code.

Signed-off-by: default avatarAdrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent b6adb57d

sound/pci/rme9652/hdspm.c

+57 −0
Original line number Diff line number Diff line
@@ -2887,6 +2887,63 @@ static int snd_hdspm_get_autosync_ref(struct snd_kcontrol *kcontrol, 
	return 0;

}



#define HDSPM_TOGGLE_SETTING(xname, xindex) \

{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \

	.name = xname, \

	.private_value = xindex, \

	.info = snd_hdspm_info_toggle_setting, \

	.get = snd_hdspm_get_toggle_setting, \

	.put = snd_hdspm_put_toggle_setting \

}



static int hdspm_toggle_setting(struct hdspm *hdspm, u32 regmask)

{

	return (hdspm->control_register & regmask) ? 1 : 0;

}



static int hdspm_set_toggle_setting(struct hdspm *hdspm, u32 regmask, int out)

{

	if (out)

		hdspm->control_register |= regmask;

	else

		hdspm->control_register &= ~regmask;

	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);



	return 0;

}



#define snd_hdspm_info_toggle_setting		snd_ctl_boolean_mono_info



static int snd_hdspm_get_toggle_setting(struct snd_kcontrol *kcontrol,

			       struct snd_ctl_elem_value *ucontrol)

{

	struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);

	u32 regmask = kcontrol->private_value;



	spin_lock_irq(&hdspm->lock);

	ucontrol->value.integer.value[0] = hdspm_toggle_setting(hdspm, regmask);

	spin_unlock_irq(&hdspm->lock);

	return 0;

}



static int snd_hdspm_put_toggle_setting(struct snd_kcontrol *kcontrol,

			       struct snd_ctl_elem_value *ucontrol)

{

	struct hdspm *hdspm = snd_kcontrol_chip(kcontrol);

	u32 regmask = kcontrol->private_value;

	int change;

	unsigned int val;



	if (!snd_hdspm_use_is_exclusive(hdspm))

		return -EBUSY;

	val = ucontrol->value.integer.value[0] & 1;

	spin_lock_irq(&hdspm->lock);

	change = (int) val != hdspm_toggle_setting(hdspm, regmask);

	hdspm_set_toggle_setting(hdspm, regmask, val);

	spin_unlock_irq(&hdspm->lock);

	return change;

}





#define HDSPM_LINE_OUT(xname, xindex) \

{	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, \

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