diff options
Diffstat (limited to 'sound/parisc/harmony.c')
| -rw-r--r-- | sound/parisc/harmony.c | 987 |
1 files changed, 987 insertions, 0 deletions
diff --git a/sound/parisc/harmony.c b/sound/parisc/harmony.c new file mode 100644 index 0000000000..db9c296dd6 --- /dev/null +++ b/sound/parisc/harmony.c @@ -0,0 +1,987 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* Hewlett-Packard Harmony audio driver + * + * This is a driver for the Harmony audio chipset found + * on the LASI ASIC of various early HP PA-RISC workstations. + * + * Copyright (C) 2004, Kyle McMartin <kyle@{debian.org,parisc-linux.org}> + * + * Based on the previous Harmony incarnations by, + * Copyright 2000 (c) Linuxcare Canada, Alex deVries + * Copyright 2000-2003 (c) Helge Deller + * Copyright 2001 (c) Matthieu Delahaye + * Copyright 2001 (c) Jean-Christophe Vaugeois + * Copyright 2003 (c) Laurent Canet + * Copyright 2004 (c) Stuart Brady + * + * Notes: + * - graveyard and silence buffers last for lifetime of + * the driver. playback and capture buffers are allocated + * per _open()/_close(). + * + * TODO: + */ + +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/time.h> +#include <linux/wait.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/spinlock.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/control.h> +#include <sound/rawmidi.h> +#include <sound/initval.h> +#include <sound/info.h> + +#include <asm/hardware.h> +#include <asm/parisc-device.h> + +#include "harmony.h" + +static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */ +static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ +module_param(index, int, 0444); +MODULE_PARM_DESC(index, "Index value for Harmony driver."); +module_param(id, charp, 0444); +MODULE_PARM_DESC(id, "ID string for Harmony driver."); + + +static const struct parisc_device_id snd_harmony_devtable[] __initconst = { + /* bushmaster / flounder */ + { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A }, + /* 712 / 715 */ + { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007B }, + /* pace */ + { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007E }, + /* outfield / coral II */ + { HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007F }, + { 0, } +}; + +MODULE_DEVICE_TABLE(parisc, snd_harmony_devtable); + +#define NAME "harmony" +#define PFX NAME ": " + +static const unsigned int snd_harmony_rates[] = { + 5512, 6615, 8000, 9600, + 11025, 16000, 18900, 22050, + 27428, 32000, 33075, 37800, + 44100, 48000 +}; + +static const unsigned int rate_bits[14] = { + HARMONY_SR_5KHZ, HARMONY_SR_6KHZ, HARMONY_SR_8KHZ, + HARMONY_SR_9KHZ, HARMONY_SR_11KHZ, HARMONY_SR_16KHZ, + HARMONY_SR_18KHZ, HARMONY_SR_22KHZ, HARMONY_SR_27KHZ, + HARMONY_SR_32KHZ, HARMONY_SR_33KHZ, HARMONY_SR_37KHZ, + HARMONY_SR_44KHZ, HARMONY_SR_48KHZ +}; + +static const struct snd_pcm_hw_constraint_list hw_constraint_rates = { + .count = ARRAY_SIZE(snd_harmony_rates), + .list = snd_harmony_rates, + .mask = 0, +}; + +static inline unsigned long +harmony_read(struct snd_harmony *h, unsigned r) +{ + return __raw_readl(h->iobase + r); +} + +static inline void +harmony_write(struct snd_harmony *h, unsigned r, unsigned long v) +{ + __raw_writel(v, h->iobase + r); +} + +static inline void +harmony_wait_for_control(struct snd_harmony *h) +{ + while (harmony_read(h, HARMONY_CNTL) & HARMONY_CNTL_C) ; +} + +static inline void +harmony_reset(struct snd_harmony *h) +{ + harmony_write(h, HARMONY_RESET, 1); + mdelay(50); + harmony_write(h, HARMONY_RESET, 0); +} + +static void +harmony_disable_interrupts(struct snd_harmony *h) +{ + u32 dstatus; + harmony_wait_for_control(h); + dstatus = harmony_read(h, HARMONY_DSTATUS); + dstatus &= ~HARMONY_DSTATUS_IE; + harmony_write(h, HARMONY_DSTATUS, dstatus); +} + +static void +harmony_enable_interrupts(struct snd_harmony *h) +{ + u32 dstatus; + harmony_wait_for_control(h); + dstatus = harmony_read(h, HARMONY_DSTATUS); + dstatus |= HARMONY_DSTATUS_IE; + harmony_write(h, HARMONY_DSTATUS, dstatus); +} + +static void +harmony_mute(struct snd_harmony *h) +{ + unsigned long flags; + + spin_lock_irqsave(&h->mixer_lock, flags); + harmony_wait_for_control(h); + harmony_write(h, HARMONY_GAINCTL, HARMONY_GAIN_SILENCE); + spin_unlock_irqrestore(&h->mixer_lock, flags); +} + +static void +harmony_unmute(struct snd_harmony *h) +{ + unsigned long flags; + + spin_lock_irqsave(&h->mixer_lock, flags); + harmony_wait_for_control(h); + harmony_write(h, HARMONY_GAINCTL, h->st.gain); + spin_unlock_irqrestore(&h->mixer_lock, flags); +} + +static void +harmony_set_control(struct snd_harmony *h) +{ + u32 ctrl; + unsigned long flags; + + spin_lock_irqsave(&h->lock, flags); + + ctrl = (HARMONY_CNTL_C | + (h->st.format << 6) | + (h->st.stereo << 5) | + (h->st.rate)); + + harmony_wait_for_control(h); + harmony_write(h, HARMONY_CNTL, ctrl); + + spin_unlock_irqrestore(&h->lock, flags); +} + +static irqreturn_t +snd_harmony_interrupt(int irq, void *dev) +{ + u32 dstatus; + struct snd_harmony *h = dev; + + spin_lock(&h->lock); + harmony_disable_interrupts(h); + harmony_wait_for_control(h); + dstatus = harmony_read(h, HARMONY_DSTATUS); + spin_unlock(&h->lock); + + if (dstatus & HARMONY_DSTATUS_PN) { + if (h->psubs && h->st.playing) { + spin_lock(&h->lock); + h->pbuf.buf += h->pbuf.count; /* PAGE_SIZE */ + h->pbuf.buf %= h->pbuf.size; /* MAX_BUFS*PAGE_SIZE */ + + harmony_write(h, HARMONY_PNXTADD, + h->pbuf.addr + h->pbuf.buf); + h->stats.play_intr++; + spin_unlock(&h->lock); + snd_pcm_period_elapsed(h->psubs); + } else { + spin_lock(&h->lock); + harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); + h->stats.silence_intr++; + spin_unlock(&h->lock); + } + } + + if (dstatus & HARMONY_DSTATUS_RN) { + if (h->csubs && h->st.capturing) { + spin_lock(&h->lock); + h->cbuf.buf += h->cbuf.count; + h->cbuf.buf %= h->cbuf.size; + + harmony_write(h, HARMONY_RNXTADD, + h->cbuf.addr + h->cbuf.buf); + h->stats.rec_intr++; + spin_unlock(&h->lock); + snd_pcm_period_elapsed(h->csubs); + } else { + spin_lock(&h->lock); + harmony_write(h, HARMONY_RNXTADD, h->gdma.addr); + h->stats.graveyard_intr++; + spin_unlock(&h->lock); + } + } + + spin_lock(&h->lock); + harmony_enable_interrupts(h); + spin_unlock(&h->lock); + + return IRQ_HANDLED; +} + +static unsigned int +snd_harmony_rate_bits(int rate) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(snd_harmony_rates); i++) + if (snd_harmony_rates[i] == rate) + return rate_bits[i]; + + return HARMONY_SR_44KHZ; +} + +static const struct snd_pcm_hardware snd_harmony_playback = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_BLOCK_TRANSFER), + .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW | + SNDRV_PCM_FMTBIT_A_LAW), + .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 | + SNDRV_PCM_RATE_KNOT), + .rate_min = 5512, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = MAX_BUF_SIZE, + .period_bytes_min = BUF_SIZE, + .period_bytes_max = BUF_SIZE, + .periods_min = 1, + .periods_max = MAX_BUFS, + .fifo_size = 0, +}; + +static const struct snd_pcm_hardware snd_harmony_capture = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_JOINT_DUPLEX | SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_BLOCK_TRANSFER), + .formats = (SNDRV_PCM_FMTBIT_S16_BE | SNDRV_PCM_FMTBIT_MU_LAW | + SNDRV_PCM_FMTBIT_A_LAW), + .rates = (SNDRV_PCM_RATE_5512 | SNDRV_PCM_RATE_8000_48000 | + SNDRV_PCM_RATE_KNOT), + .rate_min = 5512, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = MAX_BUF_SIZE, + .period_bytes_min = BUF_SIZE, + .period_bytes_max = BUF_SIZE, + .periods_min = 1, + .periods_max = MAX_BUFS, + .fifo_size = 0, +}; + +static int +snd_harmony_playback_trigger(struct snd_pcm_substream *ss, int cmd) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + + if (h->st.capturing) + return -EBUSY; + + spin_lock(&h->lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + h->st.playing = 1; + harmony_write(h, HARMONY_PNXTADD, h->pbuf.addr); + harmony_write(h, HARMONY_RNXTADD, h->gdma.addr); + harmony_unmute(h); + harmony_enable_interrupts(h); + break; + case SNDRV_PCM_TRIGGER_STOP: + h->st.playing = 0; + harmony_mute(h); + harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); + harmony_disable_interrupts(h); + break; + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_SUSPEND: + default: + spin_unlock(&h->lock); + snd_BUG(); + return -EINVAL; + } + spin_unlock(&h->lock); + + return 0; +} + +static int +snd_harmony_capture_trigger(struct snd_pcm_substream *ss, int cmd) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + + if (h->st.playing) + return -EBUSY; + + spin_lock(&h->lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + h->st.capturing = 1; + harmony_write(h, HARMONY_PNXTADD, h->sdma.addr); + harmony_write(h, HARMONY_RNXTADD, h->cbuf.addr); + harmony_unmute(h); + harmony_enable_interrupts(h); + break; + case SNDRV_PCM_TRIGGER_STOP: + h->st.capturing = 0; + harmony_mute(h); + harmony_write(h, HARMONY_RNXTADD, h->gdma.addr); + harmony_disable_interrupts(h); + break; + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_SUSPEND: + default: + spin_unlock(&h->lock); + snd_BUG(); + return -EINVAL; + } + spin_unlock(&h->lock); + + return 0; +} + +static int +snd_harmony_set_data_format(struct snd_harmony *h, int fmt, int force) +{ + int o = h->st.format; + int n; + + switch(fmt) { + case SNDRV_PCM_FORMAT_S16_BE: + n = HARMONY_DF_16BIT_LINEAR; + break; + case SNDRV_PCM_FORMAT_A_LAW: + n = HARMONY_DF_8BIT_ALAW; + break; + case SNDRV_PCM_FORMAT_MU_LAW: + n = HARMONY_DF_8BIT_ULAW; + break; + default: + n = HARMONY_DF_16BIT_LINEAR; + break; + } + + if (force || o != n) { + snd_pcm_format_set_silence(fmt, h->sdma.area, SILENCE_BUFSZ / + (snd_pcm_format_physical_width(fmt) + / 8)); + } + + return n; +} + +static int +snd_harmony_playback_prepare(struct snd_pcm_substream *ss) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + struct snd_pcm_runtime *rt = ss->runtime; + + if (h->st.capturing) + return -EBUSY; + + h->pbuf.size = snd_pcm_lib_buffer_bytes(ss); + h->pbuf.count = snd_pcm_lib_period_bytes(ss); + if (h->pbuf.buf >= h->pbuf.size) + h->pbuf.buf = 0; + h->st.playing = 0; + + h->st.rate = snd_harmony_rate_bits(rt->rate); + h->st.format = snd_harmony_set_data_format(h, rt->format, 0); + + if (rt->channels == 2) + h->st.stereo = HARMONY_SS_STEREO; + else + h->st.stereo = HARMONY_SS_MONO; + + harmony_set_control(h); + + h->pbuf.addr = rt->dma_addr; + + return 0; +} + +static int +snd_harmony_capture_prepare(struct snd_pcm_substream *ss) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + struct snd_pcm_runtime *rt = ss->runtime; + + if (h->st.playing) + return -EBUSY; + + h->cbuf.size = snd_pcm_lib_buffer_bytes(ss); + h->cbuf.count = snd_pcm_lib_period_bytes(ss); + if (h->cbuf.buf >= h->cbuf.size) + h->cbuf.buf = 0; + h->st.capturing = 0; + + h->st.rate = snd_harmony_rate_bits(rt->rate); + h->st.format = snd_harmony_set_data_format(h, rt->format, 0); + + if (rt->channels == 2) + h->st.stereo = HARMONY_SS_STEREO; + else + h->st.stereo = HARMONY_SS_MONO; + + harmony_set_control(h); + + h->cbuf.addr = rt->dma_addr; + + return 0; +} + +static snd_pcm_uframes_t +snd_harmony_playback_pointer(struct snd_pcm_substream *ss) +{ + struct snd_pcm_runtime *rt = ss->runtime; + struct snd_harmony *h = snd_pcm_substream_chip(ss); + unsigned long pcuradd; + unsigned long played; + + if (!(h->st.playing) || (h->psubs == NULL)) + return 0; + + if ((h->pbuf.addr == 0) || (h->pbuf.size == 0)) + return 0; + + pcuradd = harmony_read(h, HARMONY_PCURADD); + played = pcuradd - h->pbuf.addr; + +#ifdef HARMONY_DEBUG + printk(KERN_DEBUG PFX "playback_pointer is 0x%lx-0x%lx = %d bytes\n", + pcuradd, h->pbuf.addr, played); +#endif + + if (pcuradd > h->pbuf.addr + h->pbuf.size) { + return 0; + } + + return bytes_to_frames(rt, played); +} + +static snd_pcm_uframes_t +snd_harmony_capture_pointer(struct snd_pcm_substream *ss) +{ + struct snd_pcm_runtime *rt = ss->runtime; + struct snd_harmony *h = snd_pcm_substream_chip(ss); + unsigned long rcuradd; + unsigned long caught; + + if (!(h->st.capturing) || (h->csubs == NULL)) + return 0; + + if ((h->cbuf.addr == 0) || (h->cbuf.size == 0)) + return 0; + + rcuradd = harmony_read(h, HARMONY_RCURADD); + caught = rcuradd - h->cbuf.addr; + +#ifdef HARMONY_DEBUG + printk(KERN_DEBUG PFX "capture_pointer is 0x%lx-0x%lx = %d bytes\n", + rcuradd, h->cbuf.addr, caught); +#endif + + if (rcuradd > h->cbuf.addr + h->cbuf.size) { + return 0; + } + + return bytes_to_frames(rt, caught); +} + +static int +snd_harmony_playback_open(struct snd_pcm_substream *ss) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + struct snd_pcm_runtime *rt = ss->runtime; + int err; + + h->psubs = ss; + rt->hw = snd_harmony_playback; + snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, + &hw_constraint_rates); + + err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) + return err; + + return 0; +} + +static int +snd_harmony_capture_open(struct snd_pcm_substream *ss) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + struct snd_pcm_runtime *rt = ss->runtime; + int err; + + h->csubs = ss; + rt->hw = snd_harmony_capture; + snd_pcm_hw_constraint_list(rt, 0, SNDRV_PCM_HW_PARAM_RATE, + &hw_constraint_rates); + + err = snd_pcm_hw_constraint_integer(rt, SNDRV_PCM_HW_PARAM_PERIODS); + if (err < 0) + return err; + + return 0; +} + +static int +snd_harmony_playback_close(struct snd_pcm_substream *ss) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + h->psubs = NULL; + return 0; +} + +static int +snd_harmony_capture_close(struct snd_pcm_substream *ss) +{ + struct snd_harmony *h = snd_pcm_substream_chip(ss); + h->csubs = NULL; + return 0; +} + +static const struct snd_pcm_ops snd_harmony_playback_ops = { + .open = snd_harmony_playback_open, + .close = snd_harmony_playback_close, + .prepare = snd_harmony_playback_prepare, + .trigger = snd_harmony_playback_trigger, + .pointer = snd_harmony_playback_pointer, +}; + +static const struct snd_pcm_ops snd_harmony_capture_ops = { + .open = snd_harmony_capture_open, + .close = snd_harmony_capture_close, + .prepare = snd_harmony_capture_prepare, + .trigger = snd_harmony_capture_trigger, + .pointer = snd_harmony_capture_pointer, +}; + +static int +snd_harmony_pcm_init(struct snd_harmony *h) +{ + struct snd_pcm *pcm; + int err; + + if (snd_BUG_ON(!h)) + return -EINVAL; + + harmony_disable_interrupts(h); + + err = snd_pcm_new(h->card, "harmony", 0, 1, 1, &pcm); + if (err < 0) + return err; + + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, + &snd_harmony_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, + &snd_harmony_capture_ops); + + pcm->private_data = h; + pcm->info_flags = 0; + strcpy(pcm->name, "harmony"); + h->pcm = pcm; + + h->psubs = NULL; + h->csubs = NULL; + + /* initialize graveyard buffer */ + h->dma.type = SNDRV_DMA_TYPE_DEV; + h->dma.dev = &h->dev->dev; + err = snd_dma_alloc_pages(h->dma.type, + h->dma.dev, + BUF_SIZE*GRAVEYARD_BUFS, + &h->gdma); + if (err < 0) { + printk(KERN_ERR PFX "cannot allocate graveyard buffer!\n"); + return err; + } + + /* initialize silence buffers */ + err = snd_dma_alloc_pages(h->dma.type, + h->dma.dev, + BUF_SIZE*SILENCE_BUFS, + &h->sdma); + if (err < 0) { + printk(KERN_ERR PFX "cannot allocate silence buffer!\n"); + return err; + } + + /* pre-allocate space for DMA */ + snd_pcm_set_managed_buffer_all(pcm, h->dma.type, h->dma.dev, + MAX_BUF_SIZE, MAX_BUF_SIZE); + + h->st.format = snd_harmony_set_data_format(h, + SNDRV_PCM_FORMAT_S16_BE, 1); + + return 0; +} + +static void +snd_harmony_set_new_gain(struct snd_harmony *h) +{ + harmony_wait_for_control(h); + harmony_write(h, HARMONY_GAINCTL, h->st.gain); +} + +static int +snd_harmony_mixercontrol_info(struct snd_kcontrol *kc, + struct snd_ctl_elem_info *uinfo) +{ + int mask = (kc->private_value >> 16) & 0xff; + int left_shift = (kc->private_value) & 0xff; + int right_shift = (kc->private_value >> 8) & 0xff; + + uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : + SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = left_shift == right_shift ? 1 : 2; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = mask; + + return 0; +} + +static int +snd_harmony_volume_get(struct snd_kcontrol *kc, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_harmony *h = snd_kcontrol_chip(kc); + int shift_left = (kc->private_value) & 0xff; + int shift_right = (kc->private_value >> 8) & 0xff; + int mask = (kc->private_value >> 16) & 0xff; + int invert = (kc->private_value >> 24) & 0xff; + int left, right; + + spin_lock_irq(&h->mixer_lock); + + left = (h->st.gain >> shift_left) & mask; + right = (h->st.gain >> shift_right) & mask; + if (invert) { + left = mask - left; + right = mask - right; + } + + ucontrol->value.integer.value[0] = left; + if (shift_left != shift_right) + ucontrol->value.integer.value[1] = right; + + spin_unlock_irq(&h->mixer_lock); + + return 0; +} + +static int +snd_harmony_volume_put(struct snd_kcontrol *kc, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_harmony *h = snd_kcontrol_chip(kc); + int shift_left = (kc->private_value) & 0xff; + int shift_right = (kc->private_value >> 8) & 0xff; + int mask = (kc->private_value >> 16) & 0xff; + int invert = (kc->private_value >> 24) & 0xff; + int left, right; + int old_gain = h->st.gain; + + spin_lock_irq(&h->mixer_lock); + + left = ucontrol->value.integer.value[0] & mask; + if (invert) + left = mask - left; + h->st.gain &= ~( (mask << shift_left ) ); + h->st.gain |= (left << shift_left); + + if (shift_left != shift_right) { + right = ucontrol->value.integer.value[1] & mask; + if (invert) + right = mask - right; + h->st.gain &= ~( (mask << shift_right) ); + h->st.gain |= (right << shift_right); + } + + snd_harmony_set_new_gain(h); + + spin_unlock_irq(&h->mixer_lock); + + return h->st.gain != old_gain; +} + +static int +snd_harmony_captureroute_info(struct snd_kcontrol *kc, + struct snd_ctl_elem_info *uinfo) +{ + static const char * const texts[2] = { "Line", "Mic" }; + + return snd_ctl_enum_info(uinfo, 1, 2, texts); +} + +static int +snd_harmony_captureroute_get(struct snd_kcontrol *kc, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_harmony *h = snd_kcontrol_chip(kc); + int value; + + spin_lock_irq(&h->mixer_lock); + + value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1; + ucontrol->value.enumerated.item[0] = value; + + spin_unlock_irq(&h->mixer_lock); + + return 0; +} + +static int +snd_harmony_captureroute_put(struct snd_kcontrol *kc, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_harmony *h = snd_kcontrol_chip(kc); + int value; + int old_gain = h->st.gain; + + spin_lock_irq(&h->mixer_lock); + + value = ucontrol->value.enumerated.item[0] & 1; + h->st.gain &= ~HARMONY_GAIN_IS_MASK; + h->st.gain |= value << HARMONY_GAIN_IS_SHIFT; + + snd_harmony_set_new_gain(h); + + spin_unlock_irq(&h->mixer_lock); + + return h->st.gain != old_gain; +} + +#define HARMONY_CONTROLS ARRAY_SIZE(snd_harmony_controls) + +#define HARMONY_VOLUME(xname, left_shift, right_shift, mask, invert) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ + .info = snd_harmony_mixercontrol_info, \ + .get = snd_harmony_volume_get, .put = snd_harmony_volume_put, \ + .private_value = ((left_shift) | ((right_shift) << 8) | \ + ((mask) << 16) | ((invert) << 24)) } + +static const struct snd_kcontrol_new snd_harmony_controls[] = { + HARMONY_VOLUME("Master Playback Volume", HARMONY_GAIN_LO_SHIFT, + HARMONY_GAIN_RO_SHIFT, HARMONY_GAIN_OUT, 1), + HARMONY_VOLUME("Capture Volume", HARMONY_GAIN_LI_SHIFT, + HARMONY_GAIN_RI_SHIFT, HARMONY_GAIN_IN, 0), + HARMONY_VOLUME("Monitor Volume", HARMONY_GAIN_MA_SHIFT, + HARMONY_GAIN_MA_SHIFT, HARMONY_GAIN_MA, 1), + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Input Route", + .info = snd_harmony_captureroute_info, + .get = snd_harmony_captureroute_get, + .put = snd_harmony_captureroute_put + }, + HARMONY_VOLUME("Internal Speaker Switch", HARMONY_GAIN_SE_SHIFT, + HARMONY_GAIN_SE_SHIFT, 1, 0), + HARMONY_VOLUME("Line-Out Switch", HARMONY_GAIN_LE_SHIFT, + HARMONY_GAIN_LE_SHIFT, 1, 0), + HARMONY_VOLUME("Headphones Switch", HARMONY_GAIN_HE_SHIFT, + HARMONY_GAIN_HE_SHIFT, 1, 0), +}; + +static void +snd_harmony_mixer_reset(struct snd_harmony *h) +{ + harmony_mute(h); + harmony_reset(h); + h->st.gain = HARMONY_GAIN_DEFAULT; + harmony_unmute(h); +} + +static int +snd_harmony_mixer_init(struct snd_harmony *h) +{ + struct snd_card *card; + int idx, err; + + if (snd_BUG_ON(!h)) + return -EINVAL; + card = h->card; + strcpy(card->mixername, "Harmony Gain control interface"); + + for (idx = 0; idx < HARMONY_CONTROLS; idx++) { + err = snd_ctl_add(card, + snd_ctl_new1(&snd_harmony_controls[idx], h)); + if (err < 0) + return err; + } + + snd_harmony_mixer_reset(h); + + return 0; +} + +static int +snd_harmony_free(struct snd_harmony *h) +{ + if (h->gdma.addr) + snd_dma_free_pages(&h->gdma); + if (h->sdma.addr) + snd_dma_free_pages(&h->sdma); + + if (h->irq >= 0) + free_irq(h->irq, h); + + iounmap(h->iobase); + kfree(h); + return 0; +} + +static int +snd_harmony_dev_free(struct snd_device *dev) +{ + struct snd_harmony *h = dev->device_data; + return snd_harmony_free(h); +} + +static int +snd_harmony_create(struct snd_card *card, + struct parisc_device *padev, + struct snd_harmony **rchip) +{ + int err; + struct snd_harmony *h; + static const struct snd_device_ops ops = { + .dev_free = snd_harmony_dev_free, + }; + + *rchip = NULL; + + h = kzalloc(sizeof(*h), GFP_KERNEL); + if (h == NULL) + return -ENOMEM; + + h->hpa = padev->hpa.start; + h->card = card; + h->dev = padev; + h->irq = -1; + h->iobase = ioremap(padev->hpa.start, HARMONY_SIZE); + if (h->iobase == NULL) { + printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n", + (unsigned long)padev->hpa.start); + err = -EBUSY; + goto free_and_ret; + } + + err = request_irq(padev->irq, snd_harmony_interrupt, 0, + "harmony", h); + if (err) { + printk(KERN_ERR PFX "could not obtain interrupt %d", + padev->irq); + goto free_and_ret; + } + h->irq = padev->irq; + + spin_lock_init(&h->mixer_lock); + spin_lock_init(&h->lock); + + err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, h, &ops); + if (err < 0) + goto free_and_ret; + + *rchip = h; + + return 0; + +free_and_ret: + snd_harmony_free(h); + return err; +} + +static int __init +snd_harmony_probe(struct parisc_device *padev) +{ + int err; + struct snd_card *card; + struct snd_harmony *h; + + err = snd_card_new(&padev->dev, index, id, THIS_MODULE, 0, &card); + if (err < 0) + return err; + + err = snd_harmony_create(card, padev, &h); + if (err < 0) + goto free_and_ret; + + err = snd_harmony_pcm_init(h); + if (err < 0) + goto free_and_ret; + + err = snd_harmony_mixer_init(h); + if (err < 0) + goto free_and_ret; + + strcpy(card->driver, "harmony"); + strcpy(card->shortname, "Harmony"); + sprintf(card->longname, "%s at 0x%lx, irq %i", + card->shortname, h->hpa, h->irq); + + err = snd_card_register(card); + if (err < 0) + goto free_and_ret; + + parisc_set_drvdata(padev, card); + return 0; + +free_and_ret: + snd_card_free(card); + return err; +} + +static void __exit +snd_harmony_remove(struct parisc_device *padev) +{ + snd_card_free(parisc_get_drvdata(padev)); +} + +static struct parisc_driver snd_harmony_driver __refdata = { + .name = "harmony", + .id_table = snd_harmony_devtable, + .probe = snd_harmony_probe, + .remove = __exit_p(snd_harmony_remove), +}; + +static int __init +alsa_harmony_init(void) +{ + return register_parisc_driver(&snd_harmony_driver); +} + +static void __exit +alsa_harmony_fini(void) +{ + unregister_parisc_driver(&snd_harmony_driver); +} + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Kyle McMartin <kyle@parisc-linux.org>"); +MODULE_DESCRIPTION("Harmony sound driver"); + +module_init(alsa_harmony_init); +module_exit(alsa_harmony_fini); |