diff options
Diffstat (limited to 'sound/pci/hda/hda_intel.c')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 128 |
1 files changed, 124 insertions, 4 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 72b085ae7d46..bffaaeb0b4ba 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -47,6 +47,9 @@ #include <linux/reboot.h> #include <linux/io.h> #include <linux/pm_runtime.h> +#include <linux/clocksource.h> +#include <linux/time.h> + #ifdef CONFIG_X86 /* for snoop control */ #include <asm/pgtable.h> @@ -68,6 +71,7 @@ static int position_fix[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1}; static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1}; static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1}; static int probe_only[SNDRV_CARDS]; +static int jackpoll_ms[SNDRV_CARDS]; static bool single_cmd; static int enable_msi = -1; #ifdef CONFIG_SND_HDA_PATCH_LOADER @@ -95,6 +99,8 @@ module_param_array(probe_mask, int, NULL, 0444); MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1)."); module_param_array(probe_only, int, NULL, 0444); MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization."); +module_param_array(jackpoll_ms, int, NULL, 0444); +MODULE_PARM_DESC(jackpoll_ms, "Ms between polling for jack events (default = 0, using unsol events only)"); module_param(single_cmd, bool, 0444); MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs " "(for debugging only)."); @@ -416,6 +422,9 @@ struct azx_dev { unsigned int insufficient :1; unsigned int wc_marked:1; unsigned int no_period_wakeup:1; + + struct timecounter azx_tc; + struct cyclecounter azx_cc; }; /* CORB/RIRB */ @@ -518,6 +527,9 @@ struct azx { struct list_head list; }; +#define CREATE_TRACE_POINTS +#include "hda_intel_trace.h" + /* driver types */ enum { AZX_DRIVER_ICH, @@ -829,8 +841,9 @@ static void azx_update_rirb(struct azx *chip) smp_wmb(); chip->rirb.cmds[addr]--; } else - snd_printk(KERN_ERR SFX "spurious response %#x:%#x, " + snd_printk(KERN_ERR SFX "%s: spurious response %#x:%#x, " "last cmd=%#08x\n", + pci_name(chip->pci), res, res_ex, chip->last_cmd[addr]); } @@ -1582,6 +1595,22 @@ static void azx_bus_reset(struct hda_bus *bus) bus->in_reset = 0; } +static int get_jackpoll_interval(struct azx *chip) +{ + int i = jackpoll_ms[chip->dev_index]; + unsigned int j; + if (i == 0) + return 0; + if (i < 50 || i > 60000) + j = 0; + else + j = msecs_to_jiffies(i); + if (j == 0) + snd_printk(KERN_WARNING SFX + "jackpoll_ms value out of range: %d\n", i); + return j; +} + /* * Codec initialization */ @@ -1666,6 +1695,7 @@ static int DELAYED_INIT_MARK azx_codec_create(struct azx *chip, const char *mode err = snd_hda_codec_new(chip->bus, c, &codec); if (err < 0) continue; + codec->jackpoll_interval = get_jackpoll_interval(chip); codec->beep_mode = chip->beep_mode; codecs++; } @@ -1728,6 +1758,64 @@ static inline void azx_release_device(struct azx_dev *azx_dev) azx_dev->opened = 0; } +static cycle_t azx_cc_read(const struct cyclecounter *cc) +{ + struct azx_dev *azx_dev = container_of(cc, struct azx_dev, azx_cc); + struct snd_pcm_substream *substream = azx_dev->substream; + struct azx_pcm *apcm = snd_pcm_substream_chip(substream); + struct azx *chip = apcm->chip; + + return azx_readl(chip, WALLCLK); +} + +static void azx_timecounter_init(struct snd_pcm_substream *substream, + bool force, cycle_t last) +{ + struct azx_dev *azx_dev = get_azx_dev(substream); + struct timecounter *tc = &azx_dev->azx_tc; + struct cyclecounter *cc = &azx_dev->azx_cc; + u64 nsec; + + cc->read = azx_cc_read; + cc->mask = CLOCKSOURCE_MASK(32); + + /* + * Converting from 24 MHz to ns means applying a 125/3 factor. + * To avoid any saturation issues in intermediate operations, + * the 125 factor is applied first. The division is applied + * last after reading the timecounter value. + * Applying the 1/3 factor as part of the multiplication + * requires at least 20 bits for a decent precision, however + * overflows occur after about 4 hours or less, not a option. + */ + + cc->mult = 125; /* saturation after 195 years */ + cc->shift = 0; + + nsec = 0; /* audio time is elapsed time since trigger */ + timecounter_init(tc, cc, nsec); + if (force) + /* + * force timecounter to use predefined value, + * used for synchronized starts + */ + tc->cycle_last = last; +} + +static int azx_get_wallclock_tstamp(struct snd_pcm_substream *substream, + struct timespec *ts) +{ + struct azx_dev *azx_dev = get_azx_dev(substream); + u64 nsec; + + nsec = timecounter_read(&azx_dev->azx_tc); + nsec = div_u64(nsec, 3); /* can be optimized */ + + *ts = ns_to_timespec(nsec); + + return 0; +} + static struct snd_pcm_hardware azx_pcm_hw = { .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | @@ -1737,6 +1825,7 @@ static struct snd_pcm_hardware azx_pcm_hw = { /* SNDRV_PCM_INFO_RESUME |*/ SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_SYNC_START | + SNDRV_PCM_INFO_HAS_WALL_CLOCK | SNDRV_PCM_INFO_NO_PERIOD_WAKEUP), .formats = SNDRV_PCM_FMTBIT_S16_LE, .rates = SNDRV_PCM_RATE_48000, @@ -1776,6 +1865,12 @@ static int azx_pcm_open(struct snd_pcm_substream *substream) runtime->hw.rates = hinfo->rates; snd_pcm_limit_hw_rates(runtime); snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); + + /* avoid wrap-around with wall-clock */ + snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_TIME, + 20, + 178000000); + if (chip->align_buffer_size) /* constrain buffer sizes to be multiple of 128 bytes. This is more efficient in terms of memory @@ -1815,6 +1910,12 @@ static int azx_pcm_open(struct snd_pcm_substream *substream) mutex_unlock(&chip->open_mutex); return -EINVAL; } + + /* disable WALLCLOCK timestamps for capture streams + until we figure out how to handle digital inputs */ + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + runtime->hw.info &= ~SNDRV_PCM_INFO_HAS_WALL_CLOCK; + spin_lock_irqsave(&chip->reg_lock, flags); azx_dev->substream = substream; azx_dev->running = 0; @@ -1961,6 +2062,9 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) int rstart = 0, start, nsync = 0, sbits = 0; int nwait, timeout; + azx_dev = get_azx_dev(substream); + trace_azx_pcm_trigger(chip, azx_dev, cmd); + switch (cmd) { case SNDRV_PCM_TRIGGER_START: rstart = 1; @@ -2051,6 +2155,22 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) azx_readl(chip, OLD_SSYNC) & ~sbits); else azx_writel(chip, SSYNC, azx_readl(chip, SSYNC) & ~sbits); + if (start) { + azx_timecounter_init(substream, 0, 0); + if (nsync > 1) { + cycle_t cycle_last; + + /* same start cycle for master and group */ + azx_dev = get_azx_dev(substream); + cycle_last = azx_dev->azx_tc.cycle_last; + + snd_pcm_group_for_each_entry(s, substream) { + if (s->pcm->card != substream->pcm->card) + continue; + azx_timecounter_init(s, 1, cycle_last); + } + } + } spin_unlock(&chip->reg_lock); return 0; } @@ -2117,6 +2237,7 @@ static unsigned int azx_get_position(struct azx *chip, { unsigned int pos; int stream = azx_dev->substream->stream; + int delay = 0; switch (chip->position_fix[stream]) { case POS_FIX_LPIB: @@ -2150,7 +2271,6 @@ static unsigned int azx_get_position(struct azx *chip, chip->position_fix[stream] == POS_FIX_POSBUF && (chip->driver_caps & AZX_DCAPS_COUNT_LPIB_DELAY)) { unsigned int lpib_pos = azx_sd_readl(azx_dev, SD_LPIB); - int delay; if (stream == SNDRV_PCM_STREAM_PLAYBACK) delay = pos - lpib_pos; else @@ -2168,6 +2288,7 @@ static unsigned int azx_get_position(struct azx *chip, azx_dev->substream->runtime->delay = bytes_to_frames(azx_dev->substream->runtime, delay); } + trace_azx_get_position(chip, azx_dev, pos, delay); return pos; } @@ -2193,13 +2314,11 @@ static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev) { u32 wallclk; unsigned int pos; - int stream; wallclk = azx_readl(chip, WALLCLK) - azx_dev->start_wallclk; if (wallclk < (azx_dev->period_wallclk * 2) / 3) return -1; /* bogus (too early) interrupt */ - stream = azx_dev->substream->stream; pos = azx_get_position(chip, azx_dev, true); if (WARN_ONCE(!azx_dev->period_bytes, @@ -2290,6 +2409,7 @@ static struct snd_pcm_ops azx_pcm_ops = { .prepare = azx_pcm_prepare, .trigger = azx_pcm_trigger, .pointer = azx_pcm_pointer, + .wall_clock = azx_get_wallclock_tstamp, .mmap = azx_pcm_mmap, .page = snd_pcm_sgbuf_ops_page, }; |