diff options
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 298 |
1 files changed, 254 insertions, 44 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 15e0089..2fe86d2 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -77,6 +77,10 @@ static struct hda_vendor_id hda_vendor_ids[] = { static DEFINE_MUTEX(preset_mutex); static LIST_HEAD(hda_preset_tables); +/** + * snd_hda_add_codec_preset - Add a codec preset to the chain + * @preset: codec preset table to add + */ int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset) { mutex_lock(&preset_mutex); @@ -86,6 +90,10 @@ int snd_hda_add_codec_preset(struct hda_codec_preset_list *preset) } EXPORT_SYMBOL_GPL(snd_hda_add_codec_preset); +/** + * snd_hda_delete_codec_preset - Delete a codec preset from the chain + * @preset: codec preset table to delete + */ int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset) { mutex_lock(&preset_mutex); @@ -338,8 +346,10 @@ int snd_hda_get_sub_nodes(struct hda_codec *codec, hda_nid_t nid, unsigned int parm; parm = snd_hda_param_read(codec, nid, AC_PAR_NODE_COUNT); - if (parm == -1) + if (parm == -1) { + *start_id = 0; return 0; + } *start_id = (parm >> 16) & 0x7fff; return (int)(parm & 0x7fff); } @@ -416,7 +426,6 @@ static int read_and_add_raw_conns(struct hda_codec *codec, hda_nid_t nid) * snd_hda_get_conn_list - get connection list * @codec: the HDA codec * @nid: NID to parse - * @len: number of connection list entries * @listp: the pointer to store NID list * * Parses the connection list of the given widget and stores the pointer @@ -827,8 +836,7 @@ static void snd_hda_bus_free(struct hda_bus *bus) WARN_ON(!list_empty(&bus->codec_list)); if (bus->workq) flush_workqueue(bus->workq); - if (bus->unsol) - kfree(bus->unsol); + kfree(bus->unsol); if (bus->ops.private_free) bus->ops.private_free(bus); if (bus->workq) @@ -966,14 +974,12 @@ find_codec_preset(struct hda_codec *codec) mutex_unlock(&preset_mutex); if (mod_requested < HDA_MODREQ_MAX_COUNT) { - char name[32]; if (!mod_requested) - snprintf(name, sizeof(name), "snd-hda-codec-id:%08x", - codec->vendor_id); + request_module("snd-hda-codec-id:%08x", + codec->vendor_id); else - snprintf(name, sizeof(name), "snd-hda-codec-id:%04x*", - (codec->vendor_id >> 16) & 0xffff); - request_module(name); + request_module("snd-hda-codec-id:%04x*", + (codec->vendor_id >> 16) & 0xffff); mod_requested++; goto again; } @@ -1190,7 +1196,16 @@ unsigned int snd_hda_codec_get_pincfg(struct hda_codec *codec, hda_nid_t nid) } EXPORT_SYMBOL_GPL(snd_hda_codec_get_pincfg); -/* remember the current pinctl target value */ +/** + * snd_hda_codec_set_pin_target - remember the current pinctl target value + * @codec: the HDA codec + * @nid: pin NID + * @val: assigned pinctl value + * + * This function stores the given value to a pinctl target value in the + * pincfg table. This isn't always as same as the actually written value + * but can be referred at any time via snd_hda_codec_get_pin_target(). + */ int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid, unsigned int val) { @@ -1204,7 +1219,11 @@ int snd_hda_codec_set_pin_target(struct hda_codec *codec, hda_nid_t nid, } EXPORT_SYMBOL_GPL(snd_hda_codec_set_pin_target); -/* return the current pinctl target value */ +/** + * snd_hda_codec_get_pin_target - return the current pinctl target value + * @codec: the HDA codec + * @nid: pin NID + */ int snd_hda_codec_get_pin_target(struct hda_codec *codec, hda_nid_t nid) { struct hda_pincfg *pin; @@ -1576,6 +1595,13 @@ int snd_hda_codec_new(struct hda_bus *bus, } EXPORT_SYMBOL_GPL(snd_hda_codec_new); +/** + * snd_hda_codec_update_widgets - Refresh widget caps and pin defaults + * @codec: the HDA codec + * + * Forcibly refresh the all widget caps and the init pin configurations of + * the given codec. + */ int snd_hda_codec_update_widgets(struct hda_codec *codec) { hda_nid_t fg; @@ -2006,6 +2032,7 @@ EXPORT_SYMBOL_GPL(query_amp_caps); * @codec: the HD-audio codec * @nid: the NID to query * @dir: either #HDA_INPUT or #HDA_OUTPUT + * @bits: bit mask to check the result * * Check whether the widget has the given amp capability for the direction. */ @@ -2025,7 +2052,7 @@ EXPORT_SYMBOL_GPL(snd_hda_check_amp_caps); * snd_hda_override_amp_caps - Override the AMP capabilities * @codec: the CODEC to clean up * @nid: the NID to clean up - * @direction: either #HDA_INPUT or #HDA_OUTPUT + * @dir: either #HDA_INPUT or #HDA_OUTPUT * @caps: the capability bits to set * * Override the cached AMP caps bits value by the given one. @@ -2241,7 +2268,17 @@ int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid, } EXPORT_SYMBOL_GPL(snd_hda_codec_amp_stereo); -/* Works like snd_hda_codec_amp_update() but it writes the value only at +/** + * snd_hda_codec_amp_init - initialize the AMP value + * @codec: the HDA codec + * @nid: NID to read the AMP value + * @ch: channel (left=0 or right=1) + * @dir: #HDA_INPUT or #HDA_OUTPUT + * @idx: the index value (only for input direction) + * @mask: bit mask to set + * @val: the bits value to set + * + * Works like snd_hda_codec_amp_update() but it writes the value only at * the first access. If the amp was already initialized / updated beforehand, * this does nothing. */ @@ -2252,6 +2289,17 @@ int snd_hda_codec_amp_init(struct hda_codec *codec, hda_nid_t nid, int ch, } EXPORT_SYMBOL_GPL(snd_hda_codec_amp_init); +/** + * snd_hda_codec_amp_init_stereo - initialize the stereo AMP value + * @codec: the HDA codec + * @nid: NID to read the AMP value + * @dir: #HDA_INPUT or #HDA_OUTPUT + * @idx: the index value (only for input direction) + * @mask: bit mask to set + * @val: the bits value to set + * + * Call snd_hda_codec_amp_init() for both stereo channels. + */ int snd_hda_codec_amp_init_stereo(struct hda_codec *codec, hda_nid_t nid, int dir, int idx, int mask, int val) { @@ -2322,6 +2370,8 @@ static u32 get_amp_max_value(struct hda_codec *codec, hda_nid_t nid, int dir, /** * snd_hda_mixer_amp_volume_info - Info callback for a standard AMP mixer + * @kcontrol: referred ctl element + * @uinfo: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -2383,6 +2433,8 @@ update_amp_value(struct hda_codec *codec, hda_nid_t nid, /** * snd_hda_mixer_amp_volume_get - Get callback for a standard AMP mixer volume + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -2408,6 +2460,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_get); /** * snd_hda_mixer_amp_volume_put - Put callback for a standard AMP mixer volume + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -2438,6 +2492,10 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_volume_put); /** * snd_hda_mixer_amp_volume_put - TLV callback for a standard AMP mixer volume + * @kcontrol: ctl element + * @op_flag: operation flag + * @size: byte size of input TLV + * @_tlv: TLV data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -2636,7 +2694,10 @@ void snd_hda_ctls_clear(struct hda_codec *codec) snd_array_free(&codec->nids); } -/* pseudo device locking +/** + * snd_hda_lock_devices - pseudo device locking + * @bus: the BUS + * * toggle card->shutdown to allow/disallow the device access (as a hack) */ int snd_hda_lock_devices(struct hda_bus *bus) @@ -2673,6 +2734,10 @@ int snd_hda_lock_devices(struct hda_bus *bus) } EXPORT_SYMBOL_GPL(snd_hda_lock_devices); +/** + * snd_hda_unlock_devices - pseudo device unlocking + * @bus: the BUS + */ void snd_hda_unlock_devices(struct hda_bus *bus) { struct snd_card *card = bus->card; @@ -2859,7 +2924,7 @@ static int add_slave(struct hda_codec *codec, } /** - * snd_hda_add_vmaster - create a virtual master control and add slaves + * __snd_hda_add_vmaster - create a virtual master control and add slaves * @codec: HD-audio codec * @name: vmaster control name * @tlv: TLV data (optional) @@ -2927,16 +2992,8 @@ static int vmaster_mute_mode_info(struct snd_kcontrol *kcontrol, static const char * const texts[] = { "On", "Off", "Follow Master" }; - unsigned int index; - uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; - uinfo->count = 1; - uinfo->value.enumerated.items = 3; - index = uinfo->value.enumerated.item; - if (index >= 3) - index = 2; - strcpy(uinfo->value.enumerated.name, texts[index]); - return 0; + return snd_ctl_enum_info(uinfo, 1, 3, texts); } static int vmaster_mute_mode_get(struct snd_kcontrol *kcontrol, @@ -2970,10 +3027,15 @@ static struct snd_kcontrol_new vmaster_mute_mode = { .put = vmaster_mute_mode_put, }; -/* - * Add a mute-LED hook with the given vmaster switch kctl - * "Mute-LED Mode" control is automatically created and associated with - * the given hook. +/** + * snd_hda_add_vmaster_hook - Add a vmaster hook for mute-LED + * @codec: the HDA codec + * @hook: the vmaster hook object + * @expose_enum_ctl: flag to create an enum ctl + * + * Add a mute-LED hook with the given vmaster switch kctl. + * When @expose_enum_ctl is set, "Mute-LED Mode" control is automatically + * created and associated with the given hook. */ int snd_hda_add_vmaster_hook(struct hda_codec *codec, struct hda_vmaster_mute_hook *hook, @@ -2995,9 +3057,12 @@ int snd_hda_add_vmaster_hook(struct hda_codec *codec, } EXPORT_SYMBOL_GPL(snd_hda_add_vmaster_hook); -/* - * Call the hook with the current value for synchronization - * Should be called in init callback +/** + * snd_hda_sync_vmaster_hook - Sync vmaster hook + * @hook: the vmaster hook + * + * Call the hook with the current value for synchronization. + * Should be called in init callback. */ void snd_hda_sync_vmaster_hook(struct hda_vmaster_mute_hook *hook) { @@ -3022,6 +3087,8 @@ EXPORT_SYMBOL_GPL(snd_hda_sync_vmaster_hook); /** * snd_hda_mixer_amp_switch_info - Info callback for a standard AMP mixer switch + * @kcontrol: referred ctl element + * @uinfo: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -3041,6 +3108,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_info); /** * snd_hda_mixer_amp_switch_get - Get callback for a standard AMP mixer switch + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -3067,6 +3136,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_get); /** * snd_hda_mixer_amp_switch_put - Put callback for a standard AMP mixer switch + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_COMPOSE_AMP_VAL*() or related macros. @@ -3110,6 +3181,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_amp_switch_put); /** * snd_hda_mixer_bind_switch_get - Get callback for a bound volume control + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_BIND_MUTE*() macros. @@ -3133,6 +3206,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_bind_switch_get); /** * snd_hda_mixer_bind_switch_put - Put callback for a bound volume control + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_BIND_MUTE*() macros. @@ -3163,6 +3238,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_bind_switch_put); /** * snd_hda_mixer_bind_ctls_info - Info callback for a generic bound control + * @kcontrol: referred ctl element + * @uinfo: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_BIND_VOL() or HDA_BIND_SW() macros. @@ -3186,6 +3263,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_bind_ctls_info); /** * snd_hda_mixer_bind_ctls_get - Get callback for a generic bound control + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_BIND_VOL() or HDA_BIND_SW() macros. @@ -3209,6 +3288,8 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_bind_ctls_get); /** * snd_hda_mixer_bind_ctls_put - Put callback for a generic bound control + * @kcontrol: ctl element + * @ucontrol: pointer to get/store the data * * The control element is supposed to have the private_value field * set up via HDA_BIND_VOL() or HDA_BIND_SW() macros. @@ -3238,6 +3319,10 @@ EXPORT_SYMBOL_GPL(snd_hda_mixer_bind_ctls_put); /** * snd_hda_mixer_bind_tlv - TLV callback for a generic bound control + * @kcontrol: ctl element + * @op_flag: operation flag + * @size: byte size of input TLV + * @tlv: TLV data * * The control element is supposed to have the private_value field * set up via HDA_BIND_VOL() macro. @@ -3579,7 +3664,11 @@ int snd_hda_create_dig_out_ctls(struct hda_codec *codec, } EXPORT_SYMBOL_GPL(snd_hda_create_dig_out_ctls); -/* get the hda_spdif_out entry from the given NID +/** + * snd_hda_spdif_out_of_nid - get the hda_spdif_out entry from the given NID + * @codec: the HDA codec + * @nid: widget NID + * * call within spdif_mutex lock */ struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec, @@ -3596,6 +3685,13 @@ struct hda_spdif_out *snd_hda_spdif_out_of_nid(struct hda_codec *codec, } EXPORT_SYMBOL_GPL(snd_hda_spdif_out_of_nid); +/** + * snd_hda_spdif_ctls_unassign - Unassign the given SPDIF ctl + * @codec: the HDA codec + * @idx: the SPDIF ctl index + * + * Unassign the widget from the given SPDIF control. + */ void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx) { struct hda_spdif_out *spdif; @@ -3607,6 +3703,14 @@ void snd_hda_spdif_ctls_unassign(struct hda_codec *codec, int idx) } EXPORT_SYMBOL_GPL(snd_hda_spdif_ctls_unassign); +/** + * snd_hda_spdif_ctls_assign - Assign the SPDIF controls to the given NID + * @codec: the HDA codec + * @idx: the SPDIF ctl idx + * @nid: widget NID + * + * Assign the widget to the SPDIF control with the given index. + */ void snd_hda_spdif_ctls_assign(struct hda_codec *codec, int idx, hda_nid_t nid) { struct hda_spdif_out *spdif; @@ -3926,6 +4030,16 @@ void snd_hda_codec_flush_cache(struct hda_codec *codec) } EXPORT_SYMBOL_GPL(snd_hda_codec_flush_cache); +/** + * snd_hda_codec_set_power_to_all - Set the power state to all widgets + * @codec: the HDA codec + * @fg: function group (not used now) + * @power_state: the power state to set (AC_PWRST_*) + * + * Set the given power state to all widgets that have the power control. + * If the codec has power_filter set, it evaluates the power state and + * filter out if it's unchanged as D3. + */ void snd_hda_codec_set_power_to_all(struct hda_codec *codec, hda_nid_t fg, unsigned int power_state) { @@ -3990,7 +4104,15 @@ static unsigned int hda_sync_power_state(struct hda_codec *codec, return state; } -/* don't power down the widget if it controls eapd and EAPD_BTLENABLE is set */ +/** + * snd_hda_codec_eapd_power_filter - A power filter callback for EAPD + * @codec: the HDA codec + * @nid: widget NID + * @power_state: power state to evalue + * + * Don't power down the widget if it controls eapd and EAPD_BTLENABLE is set. + * This can be used a codec power_filter callback. + */ unsigned int snd_hda_codec_eapd_power_filter(struct hda_codec *codec, hda_nid_t nid, unsigned int power_state) @@ -4315,6 +4437,7 @@ static struct hda_rate_tbl rate_bits[] = { * @channels: the number of channels * @format: the PCM format (SNDRV_PCM_FORMAT_XXX) * @maxbps: the max. bps + * @spdif_ctls: HD-audio SPDIF status bits (0 if irrelevant) * * Calculate the format bitset from the given rate, channels and th PCM format. * @@ -4650,6 +4773,17 @@ static int set_pcm_default_values(struct hda_codec *codec, /* * codec prepare/cleanup entries */ +/** + * snd_hda_codec_prepare - Prepare a stream + * @codec: the HDA codec + * @hinfo: PCM information + * @stream: stream tag to assign + * @format: format id to assign + * @substream: PCM substream to assign + * + * Calls the prepare callback set by the codec with the given arguments. + * Clean up the inactive streams when successful. + */ int snd_hda_codec_prepare(struct hda_codec *codec, struct hda_pcm_stream *hinfo, unsigned int stream, @@ -4666,6 +4800,14 @@ int snd_hda_codec_prepare(struct hda_codec *codec, } EXPORT_SYMBOL_GPL(snd_hda_codec_prepare); +/** + * snd_hda_codec_cleanup - Prepare a stream + * @codec: the HDA codec + * @hinfo: PCM information + * @substream: PCM substream + * + * Calls the cleanup callback set by the codec with the given arguments. + */ void snd_hda_codec_cleanup(struct hda_codec *codec, struct hda_pcm_stream *hinfo, struct snd_pcm_substream *substream) @@ -4990,6 +5132,7 @@ static void __snd_hda_power_down(struct hda_codec *codec) * snd_hda_power_save - Power-up/down/sync the codec * @codec: HD-audio codec * @delta: the counter delta to change + * @d3wait: sync for D3 transition complete * * Change the power-up counter via @delta, and power up or down the hardware * appropriately. For the power-down, queue to the delayed action. @@ -5065,6 +5208,10 @@ EXPORT_SYMBOL_GPL(snd_hda_check_amp_list_power); /** * snd_hda_ch_mode_info - Info callback helper for the channel mode enum + * @codec: the HDA codec + * @uinfo: pointer to get/store the data + * @chmode: channel mode array + * @num_chmodes: channel mode array size */ int snd_hda_ch_mode_info(struct hda_codec *codec, struct snd_ctl_elem_info *uinfo, @@ -5084,6 +5231,11 @@ EXPORT_SYMBOL_GPL(snd_hda_ch_mode_info); /** * snd_hda_ch_mode_get - Get callback helper for the channel mode enum + * @codec: the HDA codec + * @ucontrol: pointer to get/store the data + * @chmode: channel mode array + * @num_chmodes: channel mode array size + * @max_channels: max number of channels */ int snd_hda_ch_mode_get(struct hda_codec *codec, struct snd_ctl_elem_value *ucontrol, @@ -5105,6 +5257,11 @@ EXPORT_SYMBOL_GPL(snd_hda_ch_mode_get); /** * snd_hda_ch_mode_put - Put callback helper for the channel mode enum + * @codec: the HDA codec + * @ucontrol: pointer to get/store the data + * @chmode: channel mode array + * @num_chmodes: channel mode array size + * @max_channelsp: pointer to store the max channels */ int snd_hda_ch_mode_put(struct hda_codec *codec, struct snd_ctl_elem_value *ucontrol, @@ -5133,6 +5290,8 @@ EXPORT_SYMBOL_GPL(snd_hda_ch_mode_put); /** * snd_hda_input_mux_info_info - Info callback helper for the input-mux enum + * @imux: imux helper object + * @uinfo: pointer to get/store the data */ int snd_hda_input_mux_info(const struct hda_input_mux *imux, struct snd_ctl_elem_info *uinfo) @@ -5154,6 +5313,11 @@ EXPORT_SYMBOL_GPL(snd_hda_input_mux_info); /** * snd_hda_input_mux_info_put - Put callback helper for the input-mux enum + * @codec: the HDA codec + * @imux: imux helper object + * @ucontrol: pointer to get/store the data + * @nid: input mux NID + * @cur_val: pointer to get/store the current imux value */ int snd_hda_input_mux_put(struct hda_codec *codec, const struct hda_input_mux *imux, @@ -5178,7 +5342,13 @@ int snd_hda_input_mux_put(struct hda_codec *codec, EXPORT_SYMBOL_GPL(snd_hda_input_mux_put); -/* +/** + * snd_hda_enum_helper_info - Helper for simple enum ctls + * @kcontrol: ctl element + * @uinfo: pointer to get/store the data + * @num_items: number of enum items + * @texts: enum item string array + * * process kcontrol info callback of a simple string enum array * when @num_items is 0 or @texts is NULL, assume a boolean enum array */ @@ -5195,14 +5365,7 @@ int snd_hda_enum_helper_info(struct snd_kcontrol *kcontrol, texts = texts_default; } - uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; - uinfo->count = 1; - uinfo->value.enumerated.items = num_items; - if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) - uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1; - strcpy(uinfo->value.enumerated.name, - texts[uinfo->value.enumerated.item]); - return 0; + return snd_ctl_enum_info(uinfo, 1, num_items, texts); } EXPORT_SYMBOL_GPL(snd_hda_enum_helper_info); @@ -5274,6 +5437,8 @@ EXPORT_SYMBOL_GPL(snd_hda_bus_reboot_notify); /** * snd_hda_multi_out_dig_open - open the digital out in the exclusive mode + * @codec: the HDA codec + * @mout: hda_multi_out object */ int snd_hda_multi_out_dig_open(struct hda_codec *codec, struct hda_multi_out *mout) @@ -5290,6 +5455,11 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_open); /** * snd_hda_multi_out_dig_prepare - prepare the digital out stream + * @codec: the HDA codec + * @mout: hda_multi_out object + * @stream_tag: stream tag to assign + * @format: format id to assign + * @substream: PCM substream to assign */ int snd_hda_multi_out_dig_prepare(struct hda_codec *codec, struct hda_multi_out *mout, @@ -5306,6 +5476,8 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_prepare); /** * snd_hda_multi_out_dig_cleanup - clean-up the digital out stream + * @codec: the HDA codec + * @mout: hda_multi_out object */ int snd_hda_multi_out_dig_cleanup(struct hda_codec *codec, struct hda_multi_out *mout) @@ -5319,6 +5491,8 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_cleanup); /** * snd_hda_multi_out_dig_close - release the digital out stream + * @codec: the HDA codec + * @mout: hda_multi_out object */ int snd_hda_multi_out_dig_close(struct hda_codec *codec, struct hda_multi_out *mout) @@ -5332,6 +5506,10 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_dig_close); /** * snd_hda_multi_out_analog_open - open analog outputs + * @codec: the HDA codec + * @mout: hda_multi_out object + * @substream: PCM substream to assign + * @hinfo: PCM information to assign * * Open analog outputs and set up the hw-constraints. * If the digital outputs can be opened as slave, open the digital @@ -5382,6 +5560,11 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_open); /** * snd_hda_multi_out_analog_prepare - Preapre the analog outputs. + * @codec: the HDA codec + * @mout: hda_multi_out object + * @stream_tag: stream tag to assign + * @format: format id to assign + * @substream: PCM substream to assign * * Set up the i/o for analog out. * When the digital out is available, copy the front out to digital out, too. @@ -5459,6 +5642,8 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_prepare); /** * snd_hda_multi_out_analog_cleanup - clean up the setting for analog out + * @codec: the HDA codec + * @mout: hda_multi_out object */ int snd_hda_multi_out_analog_cleanup(struct hda_codec *codec, struct hda_multi_out *mout) @@ -5490,6 +5675,8 @@ EXPORT_SYMBOL_GPL(snd_hda_multi_out_analog_cleanup); /** * snd_hda_get_default_vref - Get the default (mic) VREF pin bits + * @codec: the HDA codec + * @pin: referred pin NID * * Guess the suitable VREF pin bits to be set as the pin-control value. * Note: the function doesn't set the AC_PINCTL_IN_EN bit. @@ -5515,7 +5702,12 @@ unsigned int snd_hda_get_default_vref(struct hda_codec *codec, hda_nid_t pin) } EXPORT_SYMBOL_GPL(snd_hda_get_default_vref); -/* correct the pin ctl value for matching with the pin cap */ +/** + * snd_hda_correct_pin_ctl - correct the pin ctl value for matching with the pin cap + * @codec: the HDA codec + * @pin: referred pin NID + * @val: pin ctl value to audit + */ unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec, hda_nid_t pin, unsigned int val) { @@ -5566,6 +5758,19 @@ unsigned int snd_hda_correct_pin_ctl(struct hda_codec *codec, } EXPORT_SYMBOL_GPL(snd_hda_correct_pin_ctl); +/** + * _snd_hda_pin_ctl - Helper to set pin ctl value + * @codec: the HDA codec + * @pin: referred pin NID + * @val: pin control value to set + * @cached: access over codec pinctl cache or direct write + * + * This function is a helper to set a pin ctl value more safely. + * It corrects the pin ctl value via snd_hda_correct_pin_ctl(), stores the + * value in pin target array via snd_hda_codec_set_pin_target(), then + * actually writes the value via either snd_hda_codec_update_cache() or + * snd_hda_codec_write() depending on @cached flag. + */ int _snd_hda_set_pin_ctl(struct hda_codec *codec, hda_nid_t pin, unsigned int val, bool cached) { @@ -5582,6 +5787,11 @@ EXPORT_SYMBOL_GPL(_snd_hda_set_pin_ctl); /** * snd_hda_add_imux_item - Add an item to input_mux + * @codec: the HDA codec + * @imux: imux helper object + * @label: the name of imux item to assign + * @index: index number of imux item to assign + * @type_idx: pointer to store the resultant label index * * When the same label is used already in the existing items, the number * suffix is appended to the label. This label index number is stored |
