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ALSA: snd-aoa: handle master-amp if present 

Some machines have a master amp GPIO that needs to be toggled to
get sound output, in addition to speaker/headphone/line-out amps.
This makes snd-aoa handle it, if present in the device tree, thus
making snd-aoa be able to output sound on PowerMac3,6, which was
previously handled by snd-powermac which also doesn't use the
master amp GPIO.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Johannes Berg 2009-01-15 18:22:31 +01:00 committed by Takashi Iwai
parent 45e513b689
commit 5f17e79cdf
3 changed files with 25 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sound/aoa/aoa-gpio.h
View File

@ -34,10 +34,12 @@ struct gpio_methods {
void (*set_headphone)(struct gpio_runtime *rt, int on);
void (*set_speakers)(struct gpio_runtime *rt, int on);
void (*set_lineout)(struct gpio_runtime *rt, int on);
void (*set_master)(struct gpio_runtime *rt, int on);
int (*get_headphone)(struct gpio_runtime *rt);
int (*get_speakers)(struct gpio_runtime *rt);
int (*get_lineout)(struct gpio_runtime *rt);
int (*get_master)(struct gpio_runtime *rt);
void (*set_hw_reset)(struct gpio_runtime *rt, int on);

17
sound/aoa/core/gpio-feature.c
View File

@ -14,7 +14,7 @@
#include <linux/interrupt.h>
#include "../aoa.h"
/* TODO: these are 20 global variables
/* TODO: these are lots of global variables
* that aren't used on most machines...
* Move them into a dynamically allocated
* structure and use that.
@ -23,6 +23,7 @@
/* these are the GPIO numbers (register addresses as offsets into
* the GPIO space) */
static int headphone_mute_gpio;
static int master_mute_gpio;
static int amp_mute_gpio;
static int lineout_mute_gpio;
static int hw_reset_gpio;
@ -32,6 +33,7 @@ static int linein_detect_gpio;
/* see the SWITCH_GPIO macro */
static int headphone_mute_gpio_activestate;
static int master_mute_gpio_activestate;
static int amp_mute_gpio_activestate;
static int lineout_mute_gpio_activestate;
static int hw_reset_gpio_activestate;
@ -156,6 +158,7 @@ static int ftr_gpio_get_##name(struct gpio_runtime *rt) \
FTR_GPIO(headphone, 0);
FTR_GPIO(amp, 1);
FTR_GPIO(lineout, 2);
FTR_GPIO(master, 3);
static void ftr_gpio_set_hw_reset(struct gpio_runtime *rt, int on)
{
@ -172,6 +175,8 @@ static void ftr_gpio_set_hw_reset(struct gpio_runtime *rt, int on)
hw_reset_gpio, v);
}
static struct gpio_methods methods;
static void ftr_gpio_all_amps_off(struct gpio_runtime *rt)
{
int saved;
@ -181,6 +186,8 @@ static void ftr_gpio_all_amps_off(struct gpio_runtime *rt)
ftr_gpio_set_headphone(rt, 0);
ftr_gpio_set_amp(rt, 0);
ftr_gpio_set_lineout(rt, 0);
if (methods.set_master)
ftr_gpio_set_master(rt, 0);
rt->implementation_private = saved;
}
@ -193,6 +200,8 @@ static void ftr_gpio_all_amps_restore(struct gpio_runtime *rt)
ftr_gpio_set_headphone(rt, (s>>0)&1);
ftr_gpio_set_amp(rt, (s>>1)&1);
ftr_gpio_set_lineout(rt, (s>>2)&1);
if (methods.set_master)
ftr_gpio_set_master(rt, (s>>3)&1);
}
static void ftr_handle_notify(struct work_struct *work)
@ -231,6 +240,12 @@ static void ftr_gpio_init(struct gpio_runtime *rt)
get_gpio("hw-reset", "audio-hw-reset",
&hw_reset_gpio,
&hw_reset_gpio_activestate);
if (get_gpio("master-mute", NULL,
&master_mute_gpio,
&master_mute_gpio_activestate)) {
methods.set_master = ftr_gpio_set_master;
methods.get_master = ftr_gpio_get_master;
}
headphone_detect_node = get_gpio("headphone-detect", NULL,
&headphone_detect_gpio,

7
sound/aoa/fabrics/layout.c
View File

@ -600,6 +600,7 @@ struct layout_dev {
struct snd_kcontrol *headphone_ctrl;
struct snd_kcontrol *lineout_ctrl;
struct snd_kcontrol *speaker_ctrl;
struct snd_kcontrol *master_ctrl;
struct snd_kcontrol *headphone_detected_ctrl;
struct snd_kcontrol *lineout_detected_ctrl;
@ -651,6 +652,7 @@ static struct snd_kcontrol_new n##_ctl = { \
AMP_CONTROL(headphone, "Headphone Switch");
AMP_CONTROL(speakers, "Speakers Switch");
AMP_CONTROL(lineout, "Line-Out Switch");
AMP_CONTROL(master, "Master Switch");
static int detect_choice_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
@ -891,6 +893,11 @@ static void layout_attached_codec(struct aoa_codec *codec)
lineout = codec->gpio->methods->get_detect(codec->gpio,
AOA_NOTIFY_LINE_OUT);
if (codec->gpio->methods->set_master) {
ctl = snd_ctl_new1(&master_ctl, codec->gpio);
ldev->master_ctrl = ctl;
aoa_snd_ctl_add(ctl);
}
while (cc->connected) {
if (cc->connected & CC_SPEAKERS) {
if (headphones <= 0 && lineout <= 0)