From patchwork Fri Mar 21 11:10:19 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Sakamoto X-Patchwork-Id: 3873111 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 09B83BF540 for ; Fri, 21 Mar 2014 11:33:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A731120263 for ; Fri, 21 Mar 2014 11:33:31 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 0298D201FD for ; Fri, 21 Mar 2014 11:33:30 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 02B632657AB; Fri, 21 Mar 2014 12:33:29 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 71330265639; Fri, 21 Mar 2014 12:17:28 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 4C67726561F; Fri, 21 Mar 2014 12:17:16 +0100 (CET) Received: from smtp310.phy.lolipop.jp (smtp310.phy.lolipop.jp [210.157.22.78]) by alsa0.perex.cz (Postfix) with ESMTP id 4D3FA26537D for ; Fri, 21 Mar 2014 12:11:37 +0100 (CET) Received: from smtp310.phy.lolipop.lan (HELO smtp310.phy.lolipop.jp) (172.17.1.10) (smtp-auth username m12129643-o-takashi, mechanism plain) by smtp310.phy.lolipop.jp (qpsmtpd/0.82) with ESMTPA; Fri, 21 Mar 2014 20:11:36 +0900 Received: from 127.0.0.1 (127.0.0.1) by smtp310.phy.lolipop.jp (LOLIPOP-Fsecure); Fri, 21 Mar 2014 20:10:36 +0900 (JST) X-Virus-Status: clean(LOLIPOP-Fsecure) From: Takashi Sakamoto To: clemens@ladisch.de, tiwai@suse.de, perex@perex.cz Date: Fri, 21 Mar 2014 20:10:19 +0900 Message-Id: <1395400229-22957-35-git-send-email-o-takashi@sakamocchi.jp> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1395400229-22957-1-git-send-email-o-takashi@sakamocchi.jp> References: <1395400229-22957-1-git-send-email-o-takashi@sakamocchi.jp> Cc: alsa-devel@alsa-project.org, linux1394-devel@lists.sourceforge.net, ffado-devel@lists.sf.net Subject: [alsa-devel] [PATCH 34/44] bebob: Add PCM interface X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP This commit adds a functionality to capture/playback PCM samples. When AMDTP stream is already running for PCM or the source of clock is not internal, available sampling rate is limited at current one. Signed-off-by: Takashi Sakamoto --- sound/firewire/Kconfig | 1 + sound/firewire/bebob/Makefile | 1 + sound/firewire/bebob/bebob.c | 4 + sound/firewire/bebob/bebob.h | 4 + sound/firewire/bebob/bebob_pcm.c | 442 +++++++++++++++++++++++++++++++++++++++ 5 files changed, 452 insertions(+) create mode 100644 sound/firewire/bebob/bebob_pcm.c diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig index 8081ca1..022fee0 100644 --- a/sound/firewire/Kconfig +++ b/sound/firewire/Kconfig @@ -83,6 +83,7 @@ config SND_BEBOB tristate "BridgeCo DM1000/1500 with BeBoB firmware" select SND_FIREWIRE_LIB select SND_RAWMIDI + select SND_PCM help Say Y here to include support for FireWire devices based on BridgeCo DM1000/1500 with BeBoB firmware: diff --git a/sound/firewire/bebob/Makefile b/sound/firewire/bebob/Makefile index 1e39e59..533718a 100644 --- a/sound/firewire/bebob/Makefile +++ b/sound/firewire/bebob/Makefile @@ -1,3 +1,4 @@ snd-bebob-objs := bebob_command.o bebob_stream.o bebob_proc.o bebob_midi.o \ + bebob_pcm.o \ bebob.o obj-m += snd-bebob.o diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c index 75abb26..188ee3b 100644 --- a/sound/firewire/bebob/bebob.c +++ b/sound/firewire/bebob/bebob.c @@ -176,6 +176,10 @@ bebob_probe(struct fw_unit *unit, goto error; } + err = snd_bebob_create_pcm_devices(bebob); + if (err < 0) + goto error; + err = snd_card_register(card); if (err < 0) goto error; diff --git a/sound/firewire/bebob/bebob.h b/sound/firewire/bebob/bebob.h index ba76026..8109e60 100644 --- a/sound/firewire/bebob/bebob.h +++ b/sound/firewire/bebob/bebob.h @@ -22,6 +22,8 @@ #include #include #include +#include +#include #include "../lib.h" #include "../fcp.h" @@ -177,6 +179,8 @@ void snd_bebob_proc_init(struct snd_bebob *bebob); int snd_bebob_create_midi_devices(struct snd_bebob *bebob); +int snd_bebob_create_pcm_devices(struct snd_bebob *bebob); + #define SND_BEBOB_DEV_ENTRY(vendor, model) \ { \ .match_flags = IEEE1394_MATCH_VENDOR_ID | \ diff --git a/sound/firewire/bebob/bebob_pcm.c b/sound/firewire/bebob/bebob_pcm.c new file mode 100644 index 0000000..db9c87f --- /dev/null +++ b/sound/firewire/bebob/bebob_pcm.c @@ -0,0 +1,442 @@ +/* + * bebob_pcm.c - a part of driver for BeBoB based devices + * + * Copyright (c) 2013 Takashi Sakamoto + * + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#include "./bebob.h" + +static int +hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule, + struct snd_bebob *bebob, + struct snd_bebob_stream_formation *formations) +{ + struct snd_interval *r = + hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); + const struct snd_interval *c = + hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_interval t = { + .min = UINT_MAX, .max = 0, .integer = 1 + }; + unsigned int i; + + for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { + /* entry is invalid */ + if (formations[i].pcm == 0) + continue; + + if (!snd_interval_test(c, formations[i].pcm)) + continue; + + t.min = min(t.min, snd_bebob_rate_table[i]); + t.max = max(t.max, snd_bebob_rate_table[i]); + + } + return snd_interval_refine(r, &t); +} + +static int +hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule, + struct snd_bebob *bebob, + struct snd_bebob_stream_formation *formations) +{ + struct snd_interval *c = + hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); + const struct snd_interval *r = + hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); + struct snd_interval t = { + .min = UINT_MAX, .max = 0, .integer = 1 + }; + + unsigned int i; + + for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { + /* entry is invalid */ + if (formations[i].pcm == 0) + continue; + + if (!snd_interval_test(r, snd_bebob_rate_table[i])) + continue; + + t.min = min(t.min, formations[i].pcm); + t.max = max(t.max, formations[i].pcm); + } + + return snd_interval_refine(c, &t); +} + +static inline int +hw_rule_capture_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_bebob *bebob = rule->private; + return hw_rule_rate(params, rule, bebob, + bebob->tx_stream_formations); +} + +static inline int +hw_rule_playback_rate(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_bebob *bebob = rule->private; + return hw_rule_rate(params, rule, bebob, + bebob->rx_stream_formations); +} + +static inline int +hw_rule_capture_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_bebob *bebob = rule->private; + return hw_rule_channels(params, rule, bebob, + bebob->tx_stream_formations); +} + +static inline int +hw_rule_playback_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_bebob *bebob = rule->private; + return hw_rule_channels(params, rule, bebob, + bebob->rx_stream_formations); +} + +static void +prepare_channels(struct snd_pcm_hardware *hw, + struct snd_bebob_stream_formation *formations) +{ + unsigned int i; + + for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { + /* entry has no PCM channels */ + if (formations[i].pcm == 0) + continue; + + hw->channels_min = min(hw->channels_min, formations[i].pcm); + hw->channels_max = max(hw->channels_max, formations[i].pcm); + } +} + +static void +prepare_rates(struct snd_pcm_hardware *hw, + struct snd_bebob_stream_formation *formations) +{ + unsigned int i; + + for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { + /* entry has no PCM channels */ + if (formations[i].pcm == 0) + continue; + + hw->rate_min = min(hw->rate_min, snd_bebob_rate_table[i]); + hw->rate_max = max(hw->rate_max, snd_bebob_rate_table[i]); + hw->rates |= snd_pcm_rate_to_rate_bit(snd_bebob_rate_table[i]); + } +} + +static int +pcm_init_hw_params(struct snd_bebob *bebob, + struct snd_pcm_substream *substream) +{ + int err; + + static const struct snd_pcm_hardware hw = { + .info = SNDRV_PCM_INFO_BATCH | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_JOINT_DUPLEX | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID, + /* set up later */ + .rates = 0, + .rate_min = UINT_MAX, + .rate_max = 0, + /* set up later */ + .channels_min = UINT_MAX, + .channels_max = 0, + .buffer_bytes_max = 4 * 16 * 2048 * 2, + .period_bytes_min = 1, + .period_bytes_max = 4 * 16 * 2048, + .periods_min = 2, + .periods_max = UINT_MAX, + }; + + substream->runtime->hw = hw; + + /* add rule between channels and sampling rate */ + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { + prepare_rates(&substream->runtime->hw, + bebob->tx_stream_formations); + prepare_channels(&substream->runtime->hw, + bebob->tx_stream_formations); + substream->runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE; + snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_capture_channels, bebob, + SNDRV_PCM_HW_PARAM_RATE, -1); + snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + hw_rule_capture_rate, bebob, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + } else { + prepare_rates(&substream->runtime->hw, + bebob->rx_stream_formations); + prepare_channels(&substream->runtime->hw, + bebob->rx_stream_formations); + substream->runtime->hw.formats = AMDTP_OUT_PCM_FORMAT_BITS; + snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_CHANNELS, + hw_rule_playback_channels, bebob, + SNDRV_PCM_HW_PARAM_RATE, -1); + snd_pcm_hw_rule_add(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + hw_rule_playback_rate, bebob, + SNDRV_PCM_HW_PARAM_CHANNELS, -1); + } + + /* AM824 in IEC 61883-6 can deliver 24bit data */ + err = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24); + if (err < 0) + goto end; + + /* + * AMDTP functionality in firewire-lib require periods to be aligned to + * 16 bit, or 24bit inner 32bit. + */ + err = snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32); + if (err < 0) + goto end; + err = snd_pcm_hw_constraint_step(substream->runtime, 0, + SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32); + if (err < 0) + goto end; + + /* + * Currently INTERRUPT_INTERVAL in amdtp.c is 16. + * So snd_pcm_period_elapsed() can be called every 2m sec. + */ + err = snd_pcm_hw_constraint_minmax(substream->runtime, + SNDRV_PCM_HW_PARAM_PERIOD_TIME, + 2000, UINT_MAX); +end: + return err; +} + +static int +pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_bebob *bebob = substream->private_data; + unsigned int sampling_rate; + bool internal; + int err; + + err = pcm_init_hw_params(bebob, substream); + if (err < 0) + goto end; + + err = snd_bebob_stream_check_internal_clock(bebob, &internal); + if (err < 0) + goto end; + + /* + * When source of clock is internal or any PCM stream are running, + * the available sampling rate is limited at current sampling rate. + */ + if (!internal || + amdtp_stream_pcm_running(&bebob->tx_stream) || + amdtp_stream_pcm_running(&bebob->rx_stream)) { + err = snd_bebob_stream_get_rate(bebob, &sampling_rate); + if (err < 0) + goto end; + + substream->runtime->hw.rate_min = sampling_rate; + substream->runtime->hw.rate_max = sampling_rate; + } + + snd_pcm_set_sync(substream); + +end: + return err; +} + +static int +pcm_close(struct snd_pcm_substream *substream) +{ + return 0; +} + +static int +pcm_capture_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_bebob *bebob = substream->private_data; + + if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) + bebob->capture_substreams++; + amdtp_stream_set_pcm_format(&bebob->tx_stream, + params_format(hw_params)); + return snd_pcm_lib_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); +} +static int +pcm_playback_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_bebob *bebob = substream->private_data; + + if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) + bebob->playback_substreams++; + amdtp_stream_set_pcm_format(&bebob->rx_stream, + params_format(hw_params)); + return snd_pcm_lib_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); +} + +static int +pcm_capture_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_bebob *bebob = substream->private_data; + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + bebob->capture_substreams--; + + snd_bebob_stream_stop_duplex(bebob); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} +static int +pcm_playback_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_bebob *bebob = substream->private_data; + + if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) + bebob->playback_substreams--; + + snd_bebob_stream_stop_duplex(bebob); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +static int +pcm_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_bebob *bebob = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + err = snd_bebob_stream_start_duplex(bebob, &bebob->tx_stream, + runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&bebob->tx_stream); + + return err; +} +static int +pcm_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_bebob *bebob = substream->private_data; + struct snd_pcm_runtime *runtime = substream->runtime; + int err; + + err = snd_bebob_stream_start_duplex(bebob, &bebob->rx_stream, + runtime->rate); + if (err >= 0) + amdtp_stream_pcm_prepare(&bebob->rx_stream); + + return err; +} + +static int +pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_bebob *bebob = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&bebob->tx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&bebob->tx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} +static int +pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_bebob *bebob = substream->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + amdtp_stream_pcm_trigger(&bebob->rx_stream, substream); + break; + case SNDRV_PCM_TRIGGER_STOP: + amdtp_stream_pcm_trigger(&bebob->rx_stream, NULL); + break; + default: + return -EINVAL; + } + + return 0; +} + +static snd_pcm_uframes_t +pcm_capture_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_bebob *bebob = sbstrm->private_data; + return amdtp_stream_pcm_pointer(&bebob->tx_stream); +} +static snd_pcm_uframes_t +pcm_playback_pointer(struct snd_pcm_substream *sbstrm) +{ + struct snd_bebob *bebob = sbstrm->private_data; + return amdtp_stream_pcm_pointer(&bebob->rx_stream); +} + +static const struct snd_pcm_ops pcm_capture_ops = { + .open = pcm_open, + .close = pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = pcm_capture_hw_params, + .hw_free = pcm_capture_hw_free, + .prepare = pcm_capture_prepare, + .trigger = pcm_capture_trigger, + .pointer = pcm_capture_pointer, + .page = snd_pcm_lib_get_vmalloc_page, +}; +static const struct snd_pcm_ops pcm_playback_ops = { + .open = pcm_open, + .close = pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = pcm_playback_hw_params, + .hw_free = pcm_playback_hw_free, + .prepare = pcm_playback_prepare, + .trigger = pcm_playback_trigger, + .pointer = pcm_playback_pointer, + .page = snd_pcm_lib_get_vmalloc_page, + .mmap = snd_pcm_lib_mmap_vmalloc, +}; + +int snd_bebob_create_pcm_devices(struct snd_bebob *bebob) +{ + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(bebob->card, bebob->card->driver, 0, 1, 1, &pcm); + if (err < 0) + goto end; + + pcm->private_data = bebob; + snprintf(pcm->name, sizeof(pcm->name), + "%s PCM", bebob->card->shortname); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_capture_ops); +end: + return err; +}