diff options
Diffstat (limited to 'sound/pci/maestro3.c')
| -rw-r--r-- | sound/pci/maestro3.c | 139 |
1 files changed, 133 insertions, 6 deletions
diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c index b56e3367678..3c40d726b46 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); |