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Diffstat (limited to 'sound/pci/maestro3.c')
-rw-r--r--sound/pci/maestro3.c139
1 files changed, 133 insertions, 6 deletions
diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c
index b56e33676780..3c40d726b46e 100644
--- a/sound/pci/maestro3.c
+++ b/sound/pci/maestro3.c
@@ -41,6 +41,7 @@
#include <linux/vmalloc.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
+#include <linux/input.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/control.h>
@@ -844,11 +845,17 @@ struct snd_m3 {
struct m3_dma *substreams;
spinlock_t reg_lock;
- spinlock_t ac97_lock;
+#ifdef CONFIG_SND_MAESTRO3_INPUT
+ struct input_dev *input_dev;
+ char phys[64]; /* physical device path */
+#else
+ spinlock_t ac97_lock;
struct snd_kcontrol *master_switch;
struct snd_kcontrol *master_volume;
struct tasklet_struct hwvol_tq;
+#endif
+
unsigned int in_suspend;
#ifdef CONFIG_PM
@@ -1598,18 +1605,32 @@ static void snd_m3_update_ptr(struct snd_m3 *chip, struct m3_dma *s)
}
}
+/* The m3's 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 snd_m3_update_hw_volume(unsigned long private_data)
{
struct snd_m3 *chip = (struct snd_m3 *) private_data;
int x, val;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
unsigned long flags;
+#endif
/* Figure out which volume control button was pushed,
based on differences from the default register
values. */
x = inb(chip->iobase + SHADOW_MIX_REG_VOICE) & 0xee;
- /* Reset the volume control registers. */
+ /* Reset the volume counters to 4. Tests on the allegro integrated
+ into a Compaq N600C laptop, have revealed that:
+ 1) Writing any value will result in the 2 counters being reset to
+ 4 so writing 0x88 is not strictly necessary
+ 2) Writing to any of the 4 involved registers will reset all 4
+ of them (and reading them always returns the same value for all
+ of them)
+ It could be that a maestro deviates from this, so leave the code
+ as is. */
outb(0x88, chip->iobase + SHADOW_MIX_REG_VOICE);
outb(0x88, chip->iobase + HW_VOL_COUNTER_VOICE);
outb(0x88, chip->iobase + SHADOW_MIX_REG_MASTER);
@@ -1620,6 +1641,7 @@ static void snd_m3_update_hw_volume(unsigned long private_data)
if (chip->in_suspend)
return;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
if (!chip->master_switch || !chip->master_volume)
return;
@@ -1629,7 +1651,9 @@ static void snd_m3_update_hw_volume(unsigned long private_data)
val = chip->ac97->regs[AC97_MASTER_VOL];
switch (x) {
case 0x88:
- /* mute */
+ /* 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 ^= 0x8000;
chip->ac97->regs[AC97_MASTER_VOL] = val;
outw(val, chip->iobase + CODEC_DATA);
@@ -1638,7 +1662,7 @@ static void snd_m3_update_hw_volume(unsigned long private_data)
&chip->master_switch->id);
break;
case 0xaa:
- /* volume up */
+ /* counters increased by 1 -> volume up */
if ((val & 0x7f) > 0)
val--;
if ((val & 0x7f00) > 0)
@@ -1650,7 +1674,7 @@ static void snd_m3_update_hw_volume(unsigned long private_data)
&chip->master_volume->id);
break;
case 0x66:
- /* volume down */
+ /* counters decreased by 1 -> volume down */
if ((val & 0x7f) < 0x1f)
val++;
if ((val & 0x7f00) < 0x1f00)
@@ -1663,6 +1687,35 @@ static void snd_m3_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
}
static irqreturn_t snd_m3_interrupt(int irq, void *dev_id)
@@ -1677,7 +1730,11 @@ static irqreturn_t snd_m3_interrupt(int irq, void *dev_id)
return IRQ_NONE;
if (status & HV_INT_PENDING)
+#ifdef CONFIG_SND_MAESTRO3_INPUT
+ snd_m3_update_hw_volume((unsigned long)chip);
+#else
tasklet_schedule(&chip->hwvol_tq);
+#endif
/*
* ack an assp int if its running
@@ -1943,18 +2000,24 @@ static unsigned short
snd_m3_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
{
struct snd_m3 *chip = ac97->private_data;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
unsigned long flags;
+#endif
unsigned short data = 0xffff;
if (snd_m3_ac97_wait(chip))
goto fail;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
spin_lock_irqsave(&chip->ac97_lock, flags);
+#endif
snd_m3_outb(chip, 0x80 | (reg & 0x7f), CODEC_COMMAND);
if (snd_m3_ac97_wait(chip))
goto fail_unlock;
data = snd_m3_inw(chip, CODEC_DATA);
fail_unlock:
+#ifndef CONFIG_SND_MAESTRO3_INPUT
spin_unlock_irqrestore(&chip->ac97_lock, flags);
+#endif
fail:
return data;
}
@@ -1963,14 +2026,20 @@ static void
snd_m3_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val)
{
struct snd_m3 *chip = ac97->private_data;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
unsigned long flags;
+#endif
if (snd_m3_ac97_wait(chip))
return;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
spin_lock_irqsave(&chip->ac97_lock, flags);
+#endif
snd_m3_outw(chip, val, CODEC_DATA);
snd_m3_outb(chip, reg & 0x7f, CODEC_COMMAND);
+#ifndef CONFIG_SND_MAESTRO3_INPUT
spin_unlock_irqrestore(&chip->ac97_lock, flags);
+#endif
}
@@ -2077,7 +2146,9 @@ static int __devinit snd_m3_mixer(struct snd_m3 *chip)
{
struct snd_ac97_bus *pbus;
struct snd_ac97_template ac97;
+#ifndef CONFIG_SND_MAESTRO3_INPUT
struct snd_ctl_elem_id elem_id;
+#endif
int err;
static struct snd_ac97_bus_ops ops = {
.write = snd_m3_ac97_write,
@@ -2097,6 +2168,7 @@ static int __devinit snd_m3_mixer(struct snd_m3 *chip)
schedule_timeout_uninterruptible(msecs_to_jiffies(100));
snd_ac97_write(chip->ac97, AC97_PCM, 0);
+#ifndef CONFIG_SND_MAESTRO3_INPUT
memset(&elem_id, 0, sizeof(elem_id));
elem_id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
strcpy(elem_id.name, "Master Playback Switch");
@@ -2105,6 +2177,7 @@ static int __devinit snd_m3_mixer(struct snd_m3 *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;
}
@@ -2370,6 +2443,7 @@ snd_m3_enable_ints(struct snd_m3 *chip)
val = ASSP_INT_ENABLE /*| MPU401_INT_ENABLE*/;
if (chip->hv_config & HV_CTRL_ENABLE)
val |= HV_INT_ENABLE;
+ outb(val, chip->iobase + HOST_INT_STATUS);
outw(val, io + HOST_INT_CTRL);
outb(inb(io + ASSP_CONTROL_C) | ASSP_HOST_INT_ENABLE,
io + ASSP_CONTROL_C);
@@ -2384,6 +2458,11 @@ static int snd_m3_free(struct snd_m3 *chip)
struct m3_dma *s;
int i;
+#ifdef CONFIG_SND_MAESTRO3_INPUT
+ if (chip->input_dev)
+ input_unregister_device(chip->input_dev);
+#endif
+
if (chip->substreams) {
spin_lock_irq(&chip->reg_lock);
for (i = 0; i < chip->num_substreams; i++) {
@@ -2510,6 +2589,41 @@ static int m3_resume(struct pci_dev *pci)
}
#endif /* CONFIG_PM */
+#ifdef CONFIG_SND_MAESTRO3_INPUT
+static int __devinit snd_m3_input_register(struct snd_m3 *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_INPUT */
/*
*/
@@ -2553,7 +2667,9 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
}
spin_lock_init(&chip->reg_lock);
+#ifndef CONFIG_SND_MAESTRO3_INPUT
spin_lock_init(&chip->ac97_lock);
+#endif
switch (pci->device) {
case PCI_DEVICE_ID_ESS_ALLEGRO:
@@ -2636,7 +2752,9 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
snd_m3_hv_init(chip);
+#ifndef CONFIG_SND_MAESTRO3_INPUT
tasklet_init(&chip->hwvol_tq, snd_m3_update_hw_volume, (unsigned long)chip);
+#endif
if (request_irq(pci->irq, snd_m3_interrupt, IRQF_SHARED,
card->driver, chip)) {
@@ -2668,7 +2786,16 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci,
if ((err = snd_m3_pcm(chip, 0)) < 0)
return err;
-
+
+#ifdef CONFIG_SND_MAESTRO3_INPUT
+ if (chip->hv_config & HV_CTRL_ENABLE) {
+ err = snd_m3_input_register(chip);
+ if (err)
+ snd_printk(KERN_WARNING "Input device registration "
+ "failed with error %i", err);
+ }
+#endif
+
snd_m3_enable_ints(chip);
snd_m3_assp_continue(chip);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 19:53:52 +0000