ASoC: Intel: mrfld: add DSP core controls (24c8d141) · Commits · 戴 / test

sound/soc/intel/sst-atom-controls.c

+754 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,9 @@
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		* General Public License for more details.
		*
		* In the dpcm driver modelling when a particular FE/BE/Mixer/Pipe is active
		* we forward the settings and parameters, rest we keep the values in
		* driver and forward when DAPM enables them
		* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
		*/
		#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
		@@ -81,6 +84,183 @@ static int sst_fill_and_send_cmd(struct sst_data *drv,
		return ret;
		}

		/**
		* tx map value is a bitfield where each bit represents a FW channel
		*
		* 3 2 1 0 # 0 = codec0, 1 = codec1
		* RLRLRLRL # 3, 4 = reserved
		*
		* e.g. slot 0 rx map = 00001100b -> data from slot 0 goes into codec_in1 L,R
		*/
		static u8 sst_ssp_tx_map[SST_MAX_TDM_SLOTS] = {
		0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, /* default rx map */
		};

		/**
		* rx map value is a bitfield where each bit represents a slot
		*
		* 76543210 # 0 = slot 0, 1 = slot 1
		*
		* e.g. codec1_0 tx map = 00000101b -> data from codec_out1_0 goes into slot 0, 2
		*/
		static u8 sst_ssp_rx_map[SST_MAX_TDM_SLOTS] = {
		0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, /* default tx map */
		};

		/**
		* NOTE: this is invoked with lock held
		*/
		static int sst_send_slot_map(struct sst_data *drv)
		{
		struct sst_param_sba_ssp_slot_map cmd;

		SST_FILL_DEFAULT_DESTINATION(cmd.header.dst);
		cmd.header.command_id = SBA_SET_SSP_SLOT_MAP;
		cmd.header.length = sizeof(struct sst_param_sba_ssp_slot_map)
		- sizeof(struct sst_dsp_header);

		cmd.param_id = SBA_SET_SSP_SLOT_MAP;
		cmd.param_len = sizeof(cmd.rx_slot_map) + sizeof(cmd.tx_slot_map)
		+ sizeof(cmd.ssp_index);
		cmd.ssp_index = SSP_CODEC;

		memcpy(cmd.rx_slot_map, &sst_ssp_tx_map[0], sizeof(cmd.rx_slot_map));
		memcpy(cmd.tx_slot_map, &sst_ssp_rx_map[0], sizeof(cmd.tx_slot_map));

		return sst_fill_and_send_cmd_unlocked(drv, SST_IPC_IA_SET_PARAMS,
		SST_FLAG_BLOCKED, SST_TASK_SBA, 0, &cmd,
		sizeof(cmd.header) + cmd.header.length);
		}

		int sst_slot_enum_info(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
		{
		struct sst_enum e = (struct sst_enum )kcontrol->private_value;

		uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
		uinfo->count = 1;
		uinfo->value.enumerated.items = e->max;

		if (uinfo->value.enumerated.item > e->max - 1)
		uinfo->value.enumerated.item = e->max - 1;
		strcpy(uinfo->value.enumerated.name,
		e->texts[uinfo->value.enumerated.item]);

		return 0;
		}

		/**
		* sst_slot_get - get the status of the interleaver/deinterleaver control
		*
		* Searches the map where the control status is stored, and gets the
		* channel/slot which is currently set for this enumerated control. Since it is
		* an enumerated control, there is only one possible value.
		*/
		static int sst_slot_get(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct sst_enum e = (void )kcontrol->private_value;
		struct snd_soc_component *c = snd_kcontrol_chip(kcontrol);
		struct sst_data *drv = snd_soc_component_get_drvdata(c);
		unsigned int ctl_no = e->reg;
		unsigned int is_tx = e->tx;
		unsigned int val, mux;
		u8 *map = is_tx ? sst_ssp_rx_map : sst_ssp_tx_map;

		mutex_lock(&drv->lock);
		val = 1 << ctl_no;
		/* search which slot/channel has this bit set - there should be only one */
		for (mux = e->max; mux > 0; mux--)
		if (map[mux - 1] & val)
		break;

		ucontrol->value.enumerated.item[0] = mux;
		mutex_unlock(&drv->lock);

		dev_dbg(c->dev, "%s - %s map = %#x\n",
		is_tx ? "tx channel" : "rx slot",
		e->texts[mux], mux ? map[mux - 1] : -1);
		return 0;
		}

		/* sst_check_and_send_slot_map - helper for checking power state and sending
		* slot map cmd
		*
		* called with lock held
		*/
		static int sst_check_and_send_slot_map(struct sst_data drv, struct snd_kcontrol kcontrol)
		{
		struct sst_enum e = (void )kcontrol->private_value;
		int ret = 0;

		if (e->w && e->w->power)
		ret = sst_send_slot_map(drv);
		else
		dev_err(&drv->pdev->dev, "Slot control: %s doesn't have DAPM widget!!!\n",
		kcontrol->id.name);
		return ret;
		}

		/**
		* sst_slot_put - set the status of interleaver/deinterleaver control
		*
		* (de)interleaver controls are defined in opposite sense to be user-friendly
		*
		* Instead of the enum value being the value written to the register, it is the
		* register address; and the kcontrol number (register num) is the value written
		* to the register. This is so that there can be only one value for each
		* slot/channel since there is only one control for each slot/channel.
		*
		* This means that whenever an enum is set, we need to clear the bit
		* for that kcontrol_no for all the interleaver OR deinterleaver registers
		*/
		static int sst_slot_put(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_value *ucontrol)
		{
		struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol);
		struct sst_data *drv = snd_soc_component_get_drvdata(c);
		struct sst_enum e = (void )kcontrol->private_value;
		int i, ret = 0;
		unsigned int ctl_no = e->reg;
		unsigned int is_tx = e->tx;
		unsigned int slot_channel_no;
		unsigned int val, mux;
		u8 *map;

		map = is_tx ? sst_ssp_rx_map : sst_ssp_tx_map;

		val = 1 << ctl_no;
		mux = ucontrol->value.enumerated.item[0];
		if (mux > e->max - 1)
		return -EINVAL;

		mutex_lock(&drv->lock);
		/* first clear all registers of this bit */
		for (i = 0; i < e->max; i++)
		map[i] &= ~val;

		if (mux == 0) {
		/* kctl set to 'none' and we reset the bits so send IPC */
		ret = sst_check_and_send_slot_map(drv, kcontrol);

		mutex_unlock(&drv->lock);
		return ret;
		}

		/* offset by one to take "None" into account */
		slot_channel_no = mux - 1;
		map[slot_channel_no] \|= val;

		dev_dbg(c->dev, "%s %s map = %#x\n",
		is_tx ? "tx channel" : "rx slot",
		e->texts[mux], map[slot_channel_no]);

		ret = sst_check_and_send_slot_map(drv, kcontrol);

		mutex_unlock(&drv->lock);
		return ret;
		}

		static int sst_send_algo_cmd(struct sst_data *drv,
		struct sst_algo_control *bc)
		{
		@@ -104,6 +284,34 @@ static int sst_send_algo_cmd(struct sst_data *drv,
		return ret;
		}

		/**
		* sst_find_and_send_pipe_algo - send all the algo parameters for a pipe
		*
		* The algos which are in each pipeline are sent to the firmware one by one
		*
		* Called with lock held
		*/
		static int sst_find_and_send_pipe_algo(struct sst_data *drv,
		const char pipe, struct sst_ids ids)
		{
		int ret = 0;
		struct sst_algo_control *bc;
		struct sst_module *algo = NULL;

		dev_dbg(&drv->pdev->dev, "Enter: widget=%s\n", pipe);

		list_for_each_entry(algo, &ids->algo_list, node) {
		bc = (void *)algo->kctl->private_value;

		dev_dbg(&drv->pdev->dev, "Found algo control name=%s pipe=%s\n",
		algo->kctl->id.name, pipe);
		ret = sst_send_algo_cmd(drv, bc);
		if (ret)
		return ret;
		}
		return ret;
		}

		static int sst_algo_bytes_ctl_info(struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
		{
		@@ -296,8 +504,317 @@ static int sst_gain_put(struct snd_kcontrol *kcontrol,
		return ret;
		}

		static int sst_set_pipe_gain(struct sst_ids *ids,
		struct sst_data *drv, int mute);

		static int sst_send_pipe_module_params(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol)
		{
		struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
		struct sst_data *drv = snd_soc_component_get_drvdata(c);
		struct sst_ids *ids = w->priv;

		mutex_lock(&drv->lock);
		sst_find_and_send_pipe_algo(drv, w->name, ids);
		sst_set_pipe_gain(ids, drv, 0);
		mutex_unlock(&drv->lock);

		return 0;
		}

		static int sst_generic_modules_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *k, int event)
		{
		if (SND_SOC_DAPM_EVENT_ON(event))
		return sst_send_pipe_module_params(w, k);
		return 0;
		}

		static const DECLARE_TLV_DB_SCALE(sst_gain_tlv_common, SST_GAIN_MIN_VALUE * 10, 10, 0);

		/* Look up table to convert MIXER SW bit regs to SWM inputs */
		static const uint swm_mixer_input_ids[SST_SWM_INPUT_COUNT] = {
		[SST_IP_CODEC0] = SST_SWM_IN_CODEC0,
		[SST_IP_CODEC1] = SST_SWM_IN_CODEC1,
		[SST_IP_LOOP0] = SST_SWM_IN_SPROT_LOOP,
		[SST_IP_LOOP1] = SST_SWM_IN_MEDIA_LOOP1,
		[SST_IP_LOOP2] = SST_SWM_IN_MEDIA_LOOP2,
		[SST_IP_PCM0] = SST_SWM_IN_PCM0,
		[SST_IP_PCM1] = SST_SWM_IN_PCM1,
		[SST_IP_MEDIA0] = SST_SWM_IN_MEDIA0,
		[SST_IP_MEDIA1] = SST_SWM_IN_MEDIA1,
		[SST_IP_MEDIA2] = SST_SWM_IN_MEDIA2,
		[SST_IP_MEDIA3] = SST_SWM_IN_MEDIA3,
		};

		/**
		* called with lock held
		*/
		static int sst_set_pipe_gain(struct sst_ids *ids,
		struct sst_data *drv, int mute)
		{
		int ret = 0;
		struct sst_gain_mixer_control *mc;
		struct sst_gain_value *gv;
		struct sst_module *gain = NULL;

		list_for_each_entry(gain, &ids->gain_list, node) {
		struct snd_kcontrol *kctl = gain->kctl;

		dev_dbg(&drv->pdev->dev, "control name=%s\n", kctl->id.name);
		mc = (void *)kctl->private_value;
		gv = mc->gain_val;

		ret = sst_send_gain_cmd(drv, gv, mc->task_id,
		mc->pipe_id \| mc->instance_id, mc->module_id, mute);
		if (ret)
		return ret;
		}
		return ret;
		}

		/*
		* sst_handle_vb_timer - Start/Stop the DSP scheduler
		*
		* The DSP expects first cmd to be SBA_VB_START, so at first startup send
		* that.
		* DSP expects last cmd to be SBA_VB_IDLE, so at last shutdown send that.
		*
		* Do refcount internally so that we send command only at first start
		* and last end. Since SST driver does its own ref count, invoke sst's
		* power ops always!
		*/
		int sst_handle_vb_timer(struct snd_soc_dai *dai, bool enable)
		{
		int ret = 0;
		struct sst_cmd_generic cmd;
		struct sst_data *drv = snd_soc_dai_get_drvdata(dai);
		static int timer_usage;

		if (enable)
		cmd.header.command_id = SBA_VB_START;
		else
		cmd.header.command_id = SBA_IDLE;
		dev_dbg(dai->dev, "enable=%u, usage=%d\n", enable, timer_usage);

		SST_FILL_DEFAULT_DESTINATION(cmd.header.dst);
		cmd.header.length = 0;

		if (enable) {
		ret = sst->ops->power(sst->dev, true);
		if (ret < 0)
		return ret;
		}

		mutex_lock(&drv->lock);
		if (enable)
		timer_usage++;
		else
		timer_usage--;

		/*
		* Send the command only if this call is the first enable or last
		* disable
		*/
		if ((enable && (timer_usage == 1)) \|\|
		(!enable && (timer_usage == 0))) {
		ret = sst_fill_and_send_cmd_unlocked(drv, SST_IPC_IA_CMD,
		SST_FLAG_BLOCKED, SST_TASK_SBA, 0, &cmd,
		sizeof(cmd.header) + cmd.header.length);
		if (ret && enable) {
		timer_usage--;
		enable = false;
		}
		}
		mutex_unlock(&drv->lock);

		if (!enable)
		sst->ops->power(sst->dev, false);
		return ret;
		}

		/**
		* sst_ssp_config - contains SSP configuration for media UC
		*/
		static const struct sst_ssp_config sst_ssp_configs = {
		.ssp_id = SSP_CODEC,
		.bits_per_slot = 24,
		.slots = 4,
		.ssp_mode = SSP_MODE_MASTER,
		.pcm_mode = SSP_PCM_MODE_NETWORK,
		.duplex = SSP_DUPLEX,
		.ssp_protocol = SSP_MODE_PCM,
		.fs_width = 1,
		.fs_frequency = SSP_FS_48_KHZ,
		.active_slot_map = 0xF,
		.start_delay = 0,
		};

		int send_ssp_cmd(struct snd_soc_dai dai, const char id, bool enable)
		{
		struct sst_cmd_sba_hw_set_ssp cmd;
		struct sst_data *drv = snd_soc_dai_get_drvdata(dai);
		const struct sst_ssp_config *config;

		dev_info(dai->dev, "Enter: enable=%d port_name=%s\n", enable, id);

		SST_FILL_DEFAULT_DESTINATION(cmd.header.dst);
		cmd.header.command_id = SBA_HW_SET_SSP;
		cmd.header.length = sizeof(struct sst_cmd_sba_hw_set_ssp)
		- sizeof(struct sst_dsp_header);

		config = &sst_ssp_configs;
		dev_dbg(dai->dev, "ssp_id: %u\n", config->ssp_id);

		if (enable)
		cmd.switch_state = SST_SWITCH_ON;
		else
		cmd.switch_state = SST_SWITCH_OFF;

		cmd.selection = config->ssp_id;
		cmd.nb_bits_per_slots = config->bits_per_slot;
		cmd.nb_slots = config->slots;
		cmd.mode = config->ssp_mode \| (config->pcm_mode << 1);
		cmd.duplex = config->duplex;
		cmd.active_tx_slot_map = config->active_slot_map;
		cmd.active_rx_slot_map = config->active_slot_map;
		cmd.frame_sync_frequency = config->fs_frequency;
		cmd.frame_sync_polarity = SSP_FS_ACTIVE_HIGH;
		cmd.data_polarity = 1;
		cmd.frame_sync_width = config->fs_width;
		cmd.ssp_protocol = config->ssp_protocol;
		cmd.start_delay = config->start_delay;
		cmd.reserved1 = cmd.reserved2 = 0xFF;

		return sst_fill_and_send_cmd(drv, SST_IPC_IA_CMD, SST_FLAG_BLOCKED,
		SST_TASK_SBA, 0, &cmd,
		sizeof(cmd.header) + cmd.header.length);
		}

		static int sst_set_be_modules(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *k, int event)
		{
		int ret = 0;
		struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
		struct sst_data *drv = snd_soc_component_get_drvdata(c);

		dev_dbg(c->dev, "Enter: widget=%s\n", w->name);

		if (SND_SOC_DAPM_EVENT_ON(event)) {
		ret = sst_send_slot_map(drv);
		if (ret)
		return ret;
		ret = sst_send_pipe_module_params(w, k);
		}
		return ret;
		}

		static int sst_set_media_path(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *k, int event)
		{
		int ret = 0;
		struct sst_cmd_set_media_path cmd;
		struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
		struct sst_data *drv = snd_soc_component_get_drvdata(c);
		struct sst_ids *ids = w->priv;

		dev_dbg(c->dev, "widget=%s\n", w->name);
		dev_dbg(c->dev, "task=%u, location=%#x\n",
		ids->task_id, ids->location_id);

		if (SND_SOC_DAPM_EVENT_ON(event))
		cmd.switch_state = SST_PATH_ON;
		else
		cmd.switch_state = SST_PATH_OFF;

		SST_FILL_DESTINATION(2, cmd.header.dst,
		ids->location_id, SST_DEFAULT_MODULE_ID);

		/* MMX_SET_MEDIA_PATH == SBA_SET_MEDIA_PATH */
		cmd.header.command_id = MMX_SET_MEDIA_PATH;
		cmd.header.length = sizeof(struct sst_cmd_set_media_path)
		- sizeof(struct sst_dsp_header);

		ret = sst_fill_and_send_cmd(drv, SST_IPC_IA_CMD, SST_FLAG_BLOCKED,
		ids->task_id, 0, &cmd,
		sizeof(cmd.header) + cmd.header.length);
		if (ret)
		return ret;

		if (SND_SOC_DAPM_EVENT_ON(event))
		ret = sst_send_pipe_module_params(w, k);
		return ret;
		}

		static int sst_set_media_loop(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *k, int event)
		{
		int ret = 0;
		struct sst_cmd_sba_set_media_loop_map cmd;
		struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
		struct sst_data *drv = snd_soc_component_get_drvdata(c);
		struct sst_ids *ids = w->priv;

		dev_dbg(c->dev, "Enter:widget=%s\n", w->name);
		if (SND_SOC_DAPM_EVENT_ON(event))
		cmd.switch_state = SST_SWITCH_ON;
		else
		cmd.switch_state = SST_SWITCH_OFF;

		SST_FILL_DESTINATION(2, cmd.header.dst,
		ids->location_id, SST_DEFAULT_MODULE_ID);

		cmd.header.command_id = SBA_SET_MEDIA_LOOP_MAP;
		cmd.header.length = sizeof(struct sst_cmd_sba_set_media_loop_map)
		- sizeof(struct sst_dsp_header);
		cmd.param.part.cfg.rate = 2; /* 48khz */

		cmd.param.part.cfg.format = ids->format; /* stereo/Mono */
		cmd.param.part.cfg.s_length = 1; /* 24bit left justified */
		cmd.map = 0; /* Algo sequence: Gain - DRP - FIR - IIR */

		ret = sst_fill_and_send_cmd(drv, SST_IPC_IA_CMD, SST_FLAG_BLOCKED,
		SST_TASK_SBA, 0, &cmd,
		sizeof(cmd.header) + cmd.header.length);
		if (ret)
		return ret;

		if (SND_SOC_DAPM_EVENT_ON(event))
		ret = sst_send_pipe_module_params(w, k);
		return ret;
		}

		static const char * const slot_names[] = {
		"none",
		"slot 0", "slot 1", "slot 2", "slot 3",
		"slot 4", "slot 5", "slot 6", "slot 7", /* not supported by FW */
		};

		static const char * const channel_names[] = {
		"none",
		"codec_out0_0", "codec_out0_1", "codec_out1_0", "codec_out1_1",
		"codec_out2_0", "codec_out2_1", "codec_out3_0", "codec_out3_1", /* not supported by FW */
		};

		#define SST_INTERLEAVER(xpname, slot_name, slotno) \
		SST_SSP_SLOT_CTL(xpname, "tx interleaver", slot_name, slotno, true, \
		channel_names, sst_slot_get, sst_slot_put)

		#define SST_DEINTERLEAVER(xpname, channel_name, channel_no) \
		SST_SSP_SLOT_CTL(xpname, "rx deinterleaver", channel_name, channel_no, false, \
		slot_names, sst_slot_get, sst_slot_put)

		static const struct snd_kcontrol_new sst_slot_controls[] = {
		SST_INTERLEAVER("codec_out", "slot 0", 0),
		SST_INTERLEAVER("codec_out", "slot 1", 1),
		SST_INTERLEAVER("codec_out", "slot 2", 2),
		SST_INTERLEAVER("codec_out", "slot 3", 3),
		SST_DEINTERLEAVER("codec_in", "codec_in0_0", 0),
		SST_DEINTERLEAVER("codec_in", "codec_in0_1", 1),
		SST_DEINTERLEAVER("codec_in", "codec_in1_0", 2),
		SST_DEINTERLEAVER("codec_in", "codec_in1_1", 3),
		};

		/* Gain helper with min/max set */
		#define SST_GAIN(name, path_id, task_id, instance, gain_var) \
		SST_GAIN_KCONTROLS(name, "Gain", SST_GAIN_MIN_VALUE, SST_GAIN_MAX_VALUE, \
		@@ -382,6 +899,234 @@ static int sst_algo_control_init(struct device *dev)
		return 0;
		}

		static bool is_sst_dapm_widget(struct snd_soc_dapm_widget *w)
		{
		switch (w->id) {
		case snd_soc_dapm_pga:
		case snd_soc_dapm_aif_in:
		case snd_soc_dapm_aif_out:
		case snd_soc_dapm_input:
		case snd_soc_dapm_output:
		case snd_soc_dapm_mixer:
		return true;
		default:
		return false;
		}
		}

		/**
		* sst_send_pipe_gains - send gains for the front-end DAIs
		*
		* The gains in the pipes connected to the front-ends are muted/unmuted
		* automatically via the digital_mute() DAPM callback. This function sends the
		* gains for the front-end pipes.
		*/
		int sst_send_pipe_gains(struct snd_soc_dai *dai, int stream, int mute)
		{
		struct sst_data *drv = snd_soc_dai_get_drvdata(dai);
		struct snd_soc_dapm_widget *w;
		struct snd_soc_dapm_path *p = NULL;

		dev_dbg(dai->dev, "enter, dai-name=%s dir=%d\n", dai->name, stream);

		if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
		dev_dbg(dai->dev, "Stream name=%s\n",
		dai->playback_widget->name);
		w = dai->playback_widget;
		list_for_each_entry(p, &w->sinks, list_source) {
		if (p->connected && !p->connected(w, p->sink))
		continue;

		if (p->connect && p->sink->power &&
		is_sst_dapm_widget(p->sink)) {
		struct sst_ids *ids = p->sink->priv;

		dev_dbg(dai->dev, "send gains for widget=%s\n",
		p->sink->name);
		mutex_lock(&drv->lock);
		sst_set_pipe_gain(ids, drv, mute);
		mutex_unlock(&drv->lock);
		}
		}
		} else {
		dev_dbg(dai->dev, "Stream name=%s\n",
		dai->capture_widget->name);
		w = dai->capture_widget;
		list_for_each_entry(p, &w->sources, list_sink) {
		if (p->connected && !p->connected(w, p->sink))
		continue;

		if (p->connect && p->source->power &&
		is_sst_dapm_widget(p->source)) {
		struct sst_ids *ids = p->source->priv;

		dev_dbg(dai->dev, "send gain for widget=%s\n",
		p->source->name);
		mutex_lock(&drv->lock);
		sst_set_pipe_gain(ids, drv, mute);
		mutex_unlock(&drv->lock);
		}
		}
		}
		return 0;
		}

		/**
		* sst_fill_module_list - populate the list of modules/gains for a pipe
		*
		*
		* Fills the widget pointer in the kcontrol private data, and also fills the
		* kcontrol pointer in the widget private data.
		*
		* Widget pointer is used to send the algo/gain in the .put() handler if the
		* widget is powerd on.
		*
		* Kcontrol pointer is used to send the algo/gain in the widget power ON/OFF
		* event handler. Each widget (pipe) has multiple algos stored in the algo_list.
		*/
		static int sst_fill_module_list(struct snd_kcontrol *kctl,
		struct snd_soc_dapm_widget *w, int type)
		{
		struct sst_module *module = NULL;
		struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
		struct sst_ids *ids = w->priv;
		int ret = 0;

		module = devm_kzalloc(c->dev, sizeof(*module), GFP_KERNEL);
		if (!module)
		return -ENOMEM;

		if (type == SST_MODULE_GAIN) {
		struct sst_gain_mixer_control mc = (void )kctl->private_value;

		mc->w = w;
		module->kctl = kctl;
		list_add_tail(&module->node, &ids->gain_list);
		} else if (type == SST_MODULE_ALGO) {
		struct sst_algo_control bc = (void )kctl->private_value;

		bc->w = w;
		module->kctl = kctl;
		list_add_tail(&module->node, &ids->algo_list);
		} else {
		dev_err(c->dev, "invoked for unknown type %d module %s",
		type, kctl->id.name);
		ret = -EINVAL;
		}

		return ret;
		}

		/**
		* sst_fill_widget_module_info - fill list of gains/algos for the pipe
		* @widget: pipe modelled as a DAPM widget
		*
		* Fill the list of gains/algos for the widget by looking at all the card
		* controls and comparing the name of the widget with the first part of control
		* name. First part of control name contains the pipe name (widget name).
		*/
		static int sst_fill_widget_module_info(struct snd_soc_dapm_widget *w,
		struct snd_soc_platform *platform)
		{
		struct snd_kcontrol *kctl;
		int index, ret = 0;
		struct snd_card *card = platform->component.card->snd_card;
		char *idx;

		down_read(&card->controls_rwsem);

		list_for_each_entry(kctl, &card->controls, list) {
		idx = strstr(kctl->id.name, " ");
		if (idx == NULL)
		continue;
		index = strlen(kctl->id.name) - strlen(idx);

		if (strstr(kctl->id.name, "Volume") &&
		!strncmp(kctl->id.name, w->name, index))
		ret = sst_fill_module_list(kctl, w, SST_MODULE_GAIN);

		else if (strstr(kctl->id.name, "params") &&
		!strncmp(kctl->id.name, w->name, index))
		ret = sst_fill_module_list(kctl, w, SST_MODULE_ALGO);

		else if (strstr(kctl->id.name, "Switch") &&
		!strncmp(kctl->id.name, w->name, index) &&
		strstr(kctl->id.name, "Gain")) {
		struct sst_gain_mixer_control *mc =
		(void *)kctl->private_value;

		mc->w = w;

		} else if (strstr(kctl->id.name, "interleaver") &&
		!strncmp(kctl->id.name, w->name, index)) {
		struct sst_enum e = (void )kctl->private_value;

		e->w = w;

		} else if (strstr(kctl->id.name, "deinterleaver") &&
		!strncmp(kctl->id.name, w->name, index)) {

		struct sst_enum e = (void )kctl->private_value;

		e->w = w;
		}

		if (ret < 0) {
		up_read(&card->controls_rwsem);
		return ret;
		}
		}

		up_read(&card->controls_rwsem);
		return 0;
		}

		/**
		* sst_fill_linked_widgets - fill the parent pointer for the linked widget
		*/
		static void sst_fill_linked_widgets(struct snd_soc_platform *platform,
		struct sst_ids *ids)
		{
		struct snd_soc_dapm_widget *w;
		unsigned int len = strlen(ids->parent_wname);

		list_for_each_entry(w, &platform->component.card->widgets, list) {
		if (!strncmp(ids->parent_wname, w->name, len)) {
		ids->parent_w = w;
		break;
		}
		}
		}

		/**
		* sst_map_modules_to_pipe - fill algo/gains list for all pipes
		*/
		static int sst_map_modules_to_pipe(struct snd_soc_platform *platform)
		{
		struct snd_soc_dapm_widget *w;
		int ret = 0;

		list_for_each_entry(w, &platform->component.card->widgets, list) {
		if (platform && is_sst_dapm_widget(w) && (w->priv)) {
		struct sst_ids *ids = w->priv;

		dev_dbg(platform->dev, "widget type=%d name=%s\n",
		w->id, w->name);
		INIT_LIST_HEAD(&ids->algo_list);
		INIT_LIST_HEAD(&ids->gain_list);
		ret = sst_fill_widget_module_info(w, platform);

		if (ret < 0)
		return ret;

		/* fill linked widgets */
		if (ids->parent_wname != NULL)
		sst_fill_linked_widgets(platform, ids);
		}
		}
		return 0;
		}

		int sst_dsp_init_v2_dpcm(struct snd_soc_platform *platform)
		{
		int i, ret = 0;
		@@ -411,6 +1156,15 @@ int sst_dsp_init_v2_dpcm(struct snd_soc_platform *platform)
		return ret;
		ret = snd_soc_add_platform_controls(platform, sst_algo_controls,
		ARRAY_SIZE(sst_algo_controls));
		if (ret)
		return ret;

		ret = snd_soc_add_platform_controls(platform, sst_slot_controls,
		ARRAY_SIZE(sst_slot_controls));
		if (ret)
		return ret;

		ret = sst_map_modules_to_pipe(platform);

		return ret;
		}

sound/soc/intel/sst-atom-controls.h

+307 −0

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