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-rw-r--r--sound/pci/Kconfig10
-rw-r--r--sound/pci/es1968.c128
2 files changed, 128 insertions, 10 deletions
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index ebcf065..e7a8cd0 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -513,6 +513,16 @@ config SND_ES1968
To compile this driver as a module, choose M here: the module
will be called snd-es1968.
+config SND_ES1968_INPUT
+ bool "Enable input device for es1968 volume buttons"
+ depends on SND_ES1968
+ depends on INPUT=y || INPUT=SND_ES1968
+ help
+ If you say Y here, you will get an input device which reports
+ keypresses for the volume buttons connected to the es1968 chip.
+ If you say N the buttons will directly control the master volume.
+ It is recommended to say Y.
+
config SND_FM801
tristate "ForteMedia FM801"
select SND_OPL3_LIB
diff --git a/sound/pci/es1968.c b/sound/pci/es1968.c
index ecaea9f..aa973ce 100644
--- a/sound/pci/es1968.c
+++ b/sound/pci/es1968.c
@@ -104,6 +104,7 @@
#include <linux/gameport.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
+#include <linux/input.h>
#include <sound/core.h>
#include <sound/pcm.h>
@@ -517,14 +518,9 @@ struct es1968 {
/* ALSA Stuff */
struct snd_ac97 *ac97;
- struct snd_kcontrol *master_switch; /* for h/w volume control */
- struct snd_kcontrol *master_volume;
-
struct snd_rawmidi *rmidi;
spinlock_t reg_lock;
- spinlock_t ac97_lock;
- struct tasklet_struct hwvol_tq;
unsigned int in_suspend;
/* Maestro Stuff */
@@ -547,6 +543,16 @@ struct es1968 {
#ifdef SUPPORT_JOYSTICK
struct gameport *gameport;
#endif
+
+#ifdef CONFIG_SND_ES1968_INPUT
+ struct input_dev *input_dev;
+ char phys[64]; /* physical device path */
+#else
+ struct snd_kcontrol *master_switch; /* for h/w volume control */
+ struct snd_kcontrol *master_volume;
+ spinlock_t ac97_lock;
+ struct tasklet_struct hwvol_tq;
+#endif
};
static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id);
@@ -632,28 +638,38 @@ static int snd_es1968_ac97_wait_poll(struct es1968 *chip)
static void snd_es1968_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
{
struct es1968 *chip = ac97->private_data;
+#ifndef CONFIG_SND_ES1968_INPUT
unsigned long flags;
+#endif
snd_es1968_ac97_wait(chip);
/* Write the bus */
+#ifndef CONFIG_SND_ES1968_INPUT
spin_lock_irqsave(&chip->ac97_lock, flags);
+#endif
outw(val, chip->io_port + ESM_AC97_DATA);
/*msleep(1);*/
outb(reg, chip->io_port + ESM_AC97_INDEX);
/*msleep(1);*/
+#ifndef CONFIG_SND_ES1968_INPUT
spin_unlock_irqrestore(&chip->ac97_lock, flags);
+#endif
}
static unsigned short snd_es1968_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
{
u16 data = 0;
struct es1968 *chip = ac97->private_data;
+#ifndef CONFIG_SND_ES1968_INPUT
unsigned long flags;
+#endif
snd_es1968_ac97_wait(chip);
+#ifndef CONFIG_SND_ES1968_INPUT
spin_lock_irqsave(&chip->ac97_lock, flags);
+#endif
outb(reg | 0x80, chip->io_port + ESM_AC97_INDEX);
/*msleep(1);*/
@@ -661,7 +677,9 @@ static unsigned short snd_es1968_ac97_read(struct snd_ac97 *ac97, unsigned short
data = inw(chip->io_port + ESM_AC97_DATA);
/*msleep(1);*/
}
+#ifndef CONFIG_SND_ES1968_INPUT
spin_unlock_irqrestore(&chip->ac97_lock, flags);
+#endif
return data;
}
@@ -1874,13 +1892,17 @@ static void snd_es1968_update_pcm(struct es1968 *chip, struct esschan *es)
}
}
-/*
- */
+/* The hardware volume works by incrementing / decrementing 2 counters
+ (without wrap around) in response to volume button presses and then
+ generating an interrupt. The pair of counters is stored in bits 1-3 and 5-7
+ of a byte wide register. The meaning of bits 0 and 4 is unknown. */
static void es1968_update_hw_volume(unsigned long private_data)
{
struct es1968 *chip = (struct es1968 *) private_data;
int x, val;
+#ifndef CONFIG_SND_ES1968_INPUT
unsigned long flags;
+#endif
/* Figure out which volume control button was pushed,
based on differences from the default register
@@ -1895,6 +1917,7 @@ static void es1968_update_hw_volume(unsigned long private_data)
if (chip->in_suspend)
return;
+#ifndef CONFIG_SND_ES1968_INPUT
if (! chip->master_switch || ! chip->master_volume)
return;
@@ -1937,6 +1960,35 @@ static void es1968_update_hw_volume(unsigned long private_data)
break;
}
spin_unlock_irqrestore(&chip->ac97_lock, flags);
+#else
+ if (!chip->input_dev)
+ return;
+
+ val = 0;
+ switch (x) {
+ case 0x88:
+ /* The counters have not changed, yet we've received a HV
+ interrupt. According to tests run by various people this
+ happens when pressing the mute button. */
+ val = KEY_MUTE;
+ break;
+ case 0xaa:
+ /* counters increased by 1 -> volume up */
+ val = KEY_VOLUMEUP;
+ break;
+ case 0x66:
+ /* counters decreased by 1 -> volume down */
+ val = KEY_VOLUMEDOWN;
+ break;
+ }
+
+ if (val) {
+ input_report_key(chip->input_dev, val, 1);
+ input_sync(chip->input_dev);
+ input_report_key(chip->input_dev, val, 0);
+ input_sync(chip->input_dev);
+ }
+#endif
}
/*
@@ -1953,7 +2005,11 @@ static irqreturn_t snd_es1968_interrupt(int irq, void *dev_id)
outw(inw(chip->io_port + 4) & 1, chip->io_port + 4);
if (event & ESM_HWVOL_IRQ)
+#ifdef CONFIG_SND_ES1968_INPUT
+ es1968_update_hw_volume((unsigned long)chip);
+#else
tasklet_schedule(&chip->hwvol_tq); /* we'll do this later */
+#endif
/* else ack 'em all, i imagine */
outb(0xFF, chip->io_port + 0x1A);
@@ -1993,7 +2049,9 @@ snd_es1968_mixer(struct es1968 *chip)
{
struct snd_ac97_bus *pbus;
struct snd_ac97_template ac97;
+#ifndef CONFIG_SND_ES1968_INPUT
struct snd_ctl_elem_id elem_id;
+#endif
int err;
static struct snd_ac97_bus_ops ops = {
.write = snd_es1968_ac97_write,
@@ -2009,6 +2067,7 @@ snd_es1968_mixer(struct es1968 *chip)
if ((err = snd_ac97_mixer(pbus, &ac97, &chip->ac97)) < 0)
return err;
+#ifndef CONFIG_SND_ES1968_INPUT
/* attach master switch / volumes for h/w volume control */
memset(&elem_id, 0, sizeof(elem_id));
elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
@@ -2018,6 +2077,7 @@ snd_es1968_mixer(struct es1968 *chip)
elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
strcpy(elem_id.name, "Master Playback Volume");
chip->master_volume = snd_ctl_find_id(chip->card, &elem_id);
+#endif
return 0;
}
@@ -2474,8 +2534,49 @@ static inline int snd_es1968_create_gameport(struct es1968 *chip, int dev) { ret
static inline void snd_es1968_free_gameport(struct es1968 *chip) { }
#endif
+#ifdef CONFIG_SND_ES1968_INPUT
+static int __devinit snd_es1968_input_register(struct es1968 *chip)
+{
+ struct input_dev *input_dev;
+ int err;
+
+ input_dev = input_allocate_device();
+ if (!input_dev)
+ return -ENOMEM;
+
+ snprintf(chip->phys, sizeof(chip->phys), "pci-%s/input0",
+ pci_name(chip->pci));
+
+ input_dev->name = chip->card->driver;
+ input_dev->phys = chip->phys;
+ input_dev->id.bustype = BUS_PCI;
+ input_dev->id.vendor = chip->pci->vendor;
+ input_dev->id.product = chip->pci->device;
+ input_dev->dev.parent = &chip->pci->dev;
+
+ __set_bit(EV_KEY, input_dev->evbit);
+ __set_bit(KEY_MUTE, input_dev->keybit);
+ __set_bit(KEY_VOLUMEDOWN, input_dev->keybit);
+ __set_bit(KEY_VOLUMEUP, input_dev->keybit);
+
+ err = input_register_device(input_dev);
+ if (err) {
+ input_free_device(input_dev);
+ return err;
+ }
+
+ chip->input_dev = input_dev;
+ return 0;
+}
+#endif /* CONFIG_SND_ES1968_INPUT */
+
static int snd_es1968_free(struct es1968 *chip)
{
+#ifdef CONFIG_SND_ES1968_INPUT
+ if (chip->input_dev)
+ input_unregister_device(chip->input_dev);
+#endif
+
if (chip->io_port) {
if (chip->irq >= 0)
synchronize_irq(chip->irq);
@@ -2486,8 +2587,6 @@ static int snd_es1968_free(struct es1968 *chip)
if (chip->irq >= 0)
free_irq(chip->irq, chip);
snd_es1968_free_gameport(chip);
- chip->master_switch = NULL;
- chip->master_volume = NULL;
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
@@ -2558,9 +2657,11 @@ static int __devinit snd_es1968_create(struct snd_card *card,
spin_lock_init(&chip->substream_lock);
INIT_LIST_HEAD(&chip->buf_list);
INIT_LIST_HEAD(&chip->substream_list);
- spin_lock_init(&chip->ac97_lock);
mutex_init(&chip->memory_mutex);
+#ifndef CONFIG_SND_ES1968_INPUT
+ spin_lock_init(&chip->ac97_lock);
tasklet_init(&chip->hwvol_tq, es1968_update_hw_volume, (unsigned long)chip);
+#endif
chip->card = card;
chip->pci = pci;
chip->irq = -1;
@@ -2713,6 +2814,13 @@ static int __devinit snd_es1968_probe(struct pci_dev *pci,
snd_es1968_create_gameport(chip, dev);
+#ifdef CONFIG_SND_ES1968_INPUT
+ err = snd_es1968_input_register(chip);
+ if (err)
+ snd_printk(KERN_WARNING "Input device registration "
+ "failed with error %i", err);
+#endif
+
snd_es1968_start_irq(chip);
chip->clock = clock[dev];
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