/* * Digital Beep Input Interface for HD-audio codec * * Author: Matt Ranostay * Copyright (c) 2008 Embedded Alley Solutions Inc * * This driver is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This driver is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include "hda_beep.h" #include "hda_local.h" enum { DIGBEEP_HZ_STEP = 46875, /* 46.875 Hz */ DIGBEEP_HZ_MIN = 93750, /* 93.750 Hz */ DIGBEEP_HZ_MAX = 12000000, /* 12 KHz */ }; /* generate or stop tone */ static void generate_tone(struct hda_beep *beep, int tone) { struct hda_codec *codec = beep->codec; if (tone && !beep->playing) { snd_hda_power_up(codec); if (beep->power_hook) beep->power_hook(beep, true); beep->playing = 1; } snd_hda_codec_write(codec, beep->nid, 0, AC_VERB_SET_BEEP_CONTROL, tone); if (!tone && beep->playing) { beep->playing = 0; if (beep->power_hook) beep->power_hook(beep, false); snd_hda_power_down(codec); } } static void snd_hda_generate_beep(struct work_struct *work) { struct hda_beep *beep = container_of(work, struct hda_beep, beep_work); if (beep->enabled) generate_tone(beep, beep->tone); } /* (non-standard) Linear beep tone calculation for IDT/STAC codecs * * The tone frequency of beep generator on IDT/STAC codecs is * defined from the 8bit tone parameter, in Hz, * freq = 48000 * (257 - tone) / 1024 * that is from 12kHz to 93.75Hz in steps of 46.875 Hz */ static int beep_linear_tone(struct hda_beep *beep, int hz) { if (hz <= 0) return 0; hz *= 1000; /* fixed point */ hz = hz - DIGBEEP_HZ_MIN + DIGBEEP_HZ_STEP / 2; /* round to nearest step */ if (hz < 0) hz = 0; /* turn off PC beep*/ else if (hz >= (DIGBEEP_HZ_MAX - DIGBEEP_HZ_MIN)) hz = 1; /* max frequency */ else { hz /= DIGBEEP_HZ_STEP; hz = 255 - hz; } return hz; } /* HD-audio standard beep tone parameter calculation * * The tone frequency in Hz is calculated as * freq = 48000 / (tone * 4) * from 47Hz to 12kHz */ static int beep_standard_tone(struct hda_beep *beep, int hz) { if (hz <= 0) return 0; /* disabled */ hz = 12000 / hz; if (hz > 0xff) return 0xff; if (hz <= 0) return 1; return hz; } static int snd_hda_beep_event(struct input_dev *dev, unsigned int type, unsigned int code, int hz) { struct hda_beep *beep = input_get_drvdata(dev); switch (code) { case SND_BELL: if (hz) hz = 1000; /* fallthru */ case SND_TONE: if (beep->linear_tone) beep->tone = beep_linear_tone(beep, hz); else beep->tone = beep_standard_tone(beep, hz); break; default: return -1; } /* schedule beep event */ schedule_work(&beep->beep_work); return 0; } static void turn_off_beep(struct hda_beep *beep) { cancel_work_sync(&beep->beep_work); if (beep->playing) { /* turn off beep */ generate_tone(beep, 0); } } static void snd_hda_do_detach(struct hda_beep *beep) { if (beep->registered) input_unregister_device(beep->dev); else input_free_device(beep->dev); beep->dev = NULL; turn_off_beep(beep); } static int snd_hda_do_attach(struct hda_beep *beep) { struct input_dev *input_dev; struct hda_codec *codec = beep->codec; input_dev = input_allocate_device(); if (!input_dev) return -ENOMEM; /* setup digital beep device */ input_dev->name = "HDA Digital PCBeep"; input_dev->phys = beep->phys; input_dev->id.bustype = BUS_PCI; input_dev->dev.parent = &codec->card->card_dev; input_dev->id.vendor = codec->core.vendor_id >> 16; input_dev->id.product = codec->core.vendor_id & 0xffff; input_dev->id.version = 0x01; input_dev->evbit[0] = BIT_MASK(EV_SND); input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); input_dev->event = snd_hda_beep_event; input_set_drvdata(input_dev, beep); beep->dev = input_dev; return 0; } /** * snd_hda_enable_beep_device - Turn on/off beep sound * @codec: the HDA codec * @enable: flag to turn on/off */ int snd_hda_enable_beep_device(struct hda_codec *codec, int enable) { struct hda_beep *beep = codec->beep; if (!beep) return 0; enable = !!enable; if (beep->enabled != enable) { beep->enabled = enable; if (!enable) turn_off_beep(beep); return 1; } return 0; } EXPORT_SYMBOL_GPL(snd_hda_enable_beep_device); /** * snd_hda_attach_beep_device - Attach a beep input device * @codec: the HDA codec * @nid: beep NID * * Attach a beep object to the given widget. If beep hint is turned off * explicitly or beep_mode of the codec is turned off, this doesn't nothing. * * The attached beep device has to be registered via * snd_hda_register_beep_device() and released via snd_hda_detach_beep_device() * appropriately. * * Currently, only one beep device is allowed to each codec. */ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid) { struct hda_beep *beep; int err; if (!snd_hda_get_bool_hint(codec, "beep")) return 0; /* disabled explicitly by hints */ if (codec->beep_mode == HDA_BEEP_MODE_OFF) return 0; /* disabled by module option */ beep = kzalloc(sizeof(*beep), GFP_KERNEL); if (beep == NULL) return -ENOMEM; snprintf(beep->phys, sizeof(beep->phys), "card%d/codec#%d/beep0", codec->card->number, codec->addr); /* enable linear scale */ snd_hda_codec_write_cache(codec, nid, 0, AC_VERB_SET_DIGI_CONVERT_2, 0x01); beep->nid = nid; beep->codec = codec; codec->beep = beep; INIT_WORK(&beep->beep_work, &snd_hda_generate_beep); mutex_init(&beep->mutex); err = snd_hda_do_attach(beep); if (err < 0) { kfree(beep); codec->beep = NULL; return err; } return 0; } EXPORT_SYMBOL_GPL(snd_hda_attach_beep_device); /** * snd_hda_detach_beep_device - Detach the beep device * @codec: the HDA codec */ void snd_hda_detach_beep_device(struct hda_codec *codec) { struct hda_beep *beep = codec->beep; if (beep) { if (beep->dev) snd_hda_do_detach(beep); codec->beep = NULL; kfree(beep); } } EXPORT_SYMBOL_GPL(snd_hda_detach_beep_device); /** * snd_hda_register_beep_device - Register the beep device * @codec: the HDA codec */ int snd_hda_register_beep_device(struct hda_codec *codec) { struct hda_beep *beep = codec->beep; int err; if (!beep || !beep->dev) return 0; err = input_register_device(beep->dev); if (err < 0) { codec_err(codec, "hda_beep: unable to register input device\n"); input_free_device(beep->dev); codec->beep = NULL; kfree(beep); return err; } beep->registered = true; return 0; } EXPORT_SYMBOL_GPL(snd_hda_register_beep_device); static bool ctl_has_mute(struct snd_kcontrol *kcontrol) { struct hda_codec *codec = snd_kcontrol_chip(kcontrol); return query_amp_caps(codec, get_amp_nid(kcontrol), get_amp_direction(kcontrol)) & AC_AMPCAP_MUTE; } /* get/put callbacks for beep mute mixer switches */ /** * snd_hda_mixer_amp_switch_get_beep - Get callback for beep controls * @kcontrol: ctl element * @ucontrol: pointer to get/store the data */ int snd_hda_mixer_amp_switch_get_beep(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct hda_codec *codec = snd_kcontrol_chip(kcontrol); struct hda_beep *beep = codec->beep; if (beep && (!beep->enabled || !ctl_has_mute(kcontrol))) { ucontrol->value.integer.value[0] = ucontrol->value.integer.value[1] = beep->enabled; return 0; } return snd_hda_mixer_amp_switch_get(kcontrol, ucontrol); } EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_get_beep); /** * snd_hda_mixer_amp_switch_put_beep - Put callback for beep controls * @kcontrol: ctl element * @ucontrol: pointer to get/store the data */ int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct hda_codec *codec = snd_kcontrol_chip(kcontrol); struct hda_beep *beep = codec->beep; if (beep) { u8 chs = get_amp_channels(kcontrol); int enable = 0; long *valp = ucontrol->value.integer.value; if (chs & 1) { enable |= *valp; valp++; } if (chs & 2) enable |= *valp; snd_hda_enable_beep_device(codec, enable); } if (!ctl_has_mute(kcontrol)) return 0; return snd_hda_mixer_amp_switch_put(kcontrol, ucontrol); } EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_put_beep); clude/uapi/rdma/mlx5-abi.h?id=7102a18ac3f323805e3cd8f3dc64907644608c1e'>plain -rw-r--r--mthca-abi.h2932logplain -rw-r--r--nes-abi.h3380logplain -rw-r--r--ocrdma-abi.h3918logplain -rw-r--r--qedr-abi.h2559logplain -rw-r--r--rdma_netlink.h4980logplain