CS8409 TAS5764L support

Signed-off-by: Alexander Egorenkov <egorenar-dev@posteo.net>

Makefile

@@ -2,10 +2,9 @@ snd-hda-codec-cs8409-objs :=	patch_cs8409.o patch_cs8409-tables.o
 obj-$(CONFIG_SND_HDA_CODEC_CS8409) += snd-hda-codec-cs8409.o
 
 # debug build flags
-#KBUILD_EXTRA_CFLAGS = "-DCONFIG_SND_DEBUG=1 -DMYSOUNDDEBUGFULL -DCONFIG_SND_HDA_RECONFIG=1 -Wno-unused-variable -Wno-unused-function"
+#KBUILD_EXTRA_CFLAGS = "-DCONFIG_SND_DEBUG=1 -DMYSOUNDDEBUGFULL -DAPPLE_PINSENSE_FIXUP -DAPPLE_CODECS -DCONFIG_SND_HDA_RECONFIG=1 -Wno-unused-variable -Wno-unused-function"
 # normal build flags
-KBUILD_EXTRA_CFLAGS = "-DCONFIG_SND_HDA_RECONFIG=1 -Wno-unused-variable -Wno-unused-function"
+KBUILD_EXTRA_CFLAGS = "-DAPPLE_PINSENSE_FIXUP -DAPPLE_CODECS -DCONFIG_SND_HDA_RECONFIG=1 -Wno-unused-variable -Wno-unused-function"
-
 
 ifdef KVER
 KDIR := /lib/modules/$(KVER)

patch_cirrus_hda_generic_copy.h

@@ -0,0 +1,426 @@
+
+/* playback mute control with the software mute bit check */
+static void sync_auto_mute_bits(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	struct hda_gen_spec *spec = codec->spec;
+
+	if (spec->auto_mute_via_amp) {
+		hda_nid_t nid = get_amp_nid(kcontrol);
+		bool enabled = !((spec->mute_bits >> nid) & 1);
+		ucontrol->value.integer.value[0] &= enabled;
+		ucontrol->value.integer.value[1] &= enabled;
+	}
+}
+
+
+static int hda_gen_mixer_mute_put(struct snd_kcontrol *kcontrol,
+				  struct snd_ctl_elem_value *ucontrol)
+{
+	sync_auto_mute_bits(kcontrol, ucontrol);
+	return snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
+}
+
+
+/*
+ * Bound mute controls
+ */
+#define AMP_VAL_IDX_SHIFT	19
+#define AMP_VAL_IDX_MASK	(0x0f<<19)
+
+static int hda_gen_bind_mute_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	unsigned long pval;
+	int err;
+
+	mutex_lock(&codec->control_mutex);
+	pval = kcontrol->private_value;
+	kcontrol->private_value = pval & ~AMP_VAL_IDX_MASK; /* index 0 */
+	err = snd_hda_mixer_amp_switch_get(kcontrol, ucontrol);
+	kcontrol->private_value = pval;
+	mutex_unlock(&codec->control_mutex);
+	return err;
+}
+
+static int hda_gen_bind_mute_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
+	unsigned long pval;
+	int i, indices, err = 0, change = 0;
+
+	sync_auto_mute_bits(kcontrol, ucontrol);
+
+	mutex_lock(&codec->control_mutex);
+	pval = kcontrol->private_value;
+	indices = (pval & AMP_VAL_IDX_MASK) >> AMP_VAL_IDX_SHIFT;
+	for (i = 0; i < indices; i++) {
+		kcontrol->private_value = (pval & ~AMP_VAL_IDX_MASK) |
+			(i << AMP_VAL_IDX_SHIFT);
+		err = snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
+		if (err < 0)
+			break;
+		change |= err;
+	}
+	kcontrol->private_value = pval;
+	mutex_unlock(&codec->control_mutex);
+	return err < 0 ? err : change;
+}
+
+
+enum {
+	HDA_CTL_WIDGET_VOL,
+	HDA_CTL_WIDGET_MUTE,
+	HDA_CTL_BIND_MUTE,
+};
+
+
+static const struct snd_kcontrol_new control_templates[] = {
+	HDA_CODEC_VOLUME(NULL, 0, 0, 0),
+	/* only the put callback is replaced for handling the special mute */
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+		.subdevice = HDA_SUBDEV_AMP_FLAG,
+		.info = snd_hda_mixer_amp_switch_info,
+		.get = snd_hda_mixer_amp_switch_get,
+		.put = hda_gen_mixer_mute_put, /* replaced */
+		.private_value = HDA_COMPOSE_AMP_VAL(0, 3, 0, 0),
+	},
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+		.info = snd_hda_mixer_amp_switch_info,
+		.get = hda_gen_bind_mute_get,
+		.put = hda_gen_bind_mute_put, /* replaced */
+		.private_value = HDA_COMPOSE_AMP_VAL(0, 3, 0, 0),
+	},
+};
+
+
+/* add the powersave loopback-list entry */
+static int add_loopback_list(struct hda_gen_spec *spec, hda_nid_t mix, int idx)
+{
+	struct hda_amp_list *list;
+
+	list = snd_array_new(&spec->loopback_list);
+	if (!list)
+		return -ENOMEM;
+	list->nid = mix;
+	list->dir = HDA_INPUT;
+	list->idx = idx;
+	spec->loopback.amplist = spec->loopback_list.list;
+	return 0;
+}
+
+
+static int is_input_pin(struct hda_codec *codec, hda_nid_t nid)
+{
+	unsigned int pincap = snd_hda_query_pin_caps(codec, nid);
+	return (pincap & AC_PINCAP_IN) != 0;
+}
+
+
+
+//static int create_in_jack_mode(struct hda_codec *codec, hda_nid_t pin)
+//{
+//	struct hda_gen_spec *spec = codec->spec;
+//	struct snd_kcontrol_new *knew;
+//	char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
+//	unsigned int defcfg;
+//
+//	if (pin == spec->hp_mic_pin)
+//		return 0; /* already done in create_out_jack_mode() */
+//
+//	/* no jack mode for fixed pins */
+//	defcfg = snd_hda_codec_get_pincfg(codec, pin);
+//	if (snd_hda_get_input_pin_attr(defcfg) == INPUT_PIN_ATTR_INT)
+//		return 0;
+//
+//	/* no multiple vref caps? */
+//	if (get_in_jack_num_items(codec, pin) <= 1)
+//		return 0;
+//
+//	get_jack_mode_name(codec, pin, name, sizeof(name));
+//	knew = snd_hda_gen_add_kctl(spec, name, &in_jack_mode_enum);
+//	if (!knew)
+//		return -ENOMEM;
+//	knew->private_value = pin;
+//	return 0;
+//}
+
+
+static void print_nid_path(struct hda_codec *codec,
+			   const char *pfx, struct nid_path *path)
+{
+	char buf[40];
+	char *pos = buf;
+	int i;
+
+	*pos = 0;
+	for (i = 0; i < path->depth; i++)
+		pos += scnprintf(pos, sizeof(buf) - (pos - buf), "%s%02x",
+				 pos != buf ? ":" : "",
+				 path->path[i]);
+
+	codec_dbg(codec, "%s path: depth=%d '%s'\n", pfx, path->depth, buf);
+}
+
+
+/* check whether the given two widgets can be connected */
+static bool is_reachable_path(struct hda_codec *codec,
+			      hda_nid_t from_nid, hda_nid_t to_nid)
+{
+	if (!from_nid || !to_nid)
+		return false;
+	return snd_hda_get_conn_index(codec, to_nid, from_nid, true) >= 0;
+}
+
+
+/* fill the label for each input at first */
+static int fill_input_pin_labels(struct hda_codec *codec)
+{
+	struct hda_gen_spec *spec = codec->spec;
+	const struct auto_pin_cfg *cfg = &spec->autocfg;
+	int i;
+
+	for (i = 0; i < cfg->num_inputs; i++) {
+		hda_nid_t pin = cfg->inputs[i].pin;
+		const char *label;
+		int j, idx;
+
+		if (!is_input_pin(codec, pin))
+			continue;
+
+		label = hda_get_autocfg_input_label(codec, cfg, i);
+		idx = 0;
+		for (j = i - 1; j >= 0; j--) {
+			if (spec->input_labels[j] &&
+			    !strcmp(spec->input_labels[j], label)) {
+				idx = spec->input_label_idxs[j] + 1;
+				break;
+			}
+		}
+
+		spec->input_labels[i] = label;
+		spec->input_label_idxs[i] = idx;
+	}
+
+	return 0;
+}
+
+/* Parse the codec tree and retrieve ADCs */
+static int fill_adc_nids(struct hda_codec *codec)
+{
+	struct hda_gen_spec *spec = codec->spec;
+	hda_nid_t nid;
+	hda_nid_t *adc_nids = spec->adc_nids;
+	int max_nums = ARRAY_SIZE(spec->adc_nids);
+	int nums = 0;
+
+	for_each_hda_codec_node(nid, codec) {
+		unsigned int caps = get_wcaps(codec, nid);
+		int type = get_wcaps_type(caps);
+
+		if (type != AC_WID_AUD_IN || (caps & AC_WCAP_DIGITAL))
+			continue;
+		adc_nids[nums] = nid;
+		if (++nums >= max_nums)
+			break;
+	}
+	spec->num_adc_nids = nums;
+
+	codec_dbg(codec, "fill_adc_nids num nids %d\n",nums);
+
+	/* copy the detected ADCs to all_adcs[] */
+	spec->num_all_adcs = nums;
+	memcpy(spec->all_adcs, spec->adc_nids, nums * sizeof(hda_nid_t));
+
+	return nums;
+}
+
+
+#define update_pin_ctl(codec, pin, val) \
+	snd_hda_codec_write_cache(codec, pin, 0, \
+				   AC_VERB_SET_PIN_WIDGET_CONTROL, val)
+
+/* set the pinctl target value and write it if requested */
+static void set_pin_target(struct hda_codec *codec, hda_nid_t pin,
+			   unsigned int val, bool do_write)
+{
+	if (!pin)
+		return;
+	val = snd_hda_correct_pin_ctl(codec, pin, val);
+	snd_hda_codec_set_pin_target(codec, pin, val);
+	if (do_write)
+		update_pin_ctl(codec, pin, val);
+}
+
+
+
+/* nid, dir and idx */
+#define AMP_VAL_COMPARE_MASK	(0xffff | (1U << 18) | (0x0f << 19))
+
+/* check whether the given ctl is already assigned in any path elements */
+static bool is_ctl_used(struct hda_codec *codec, unsigned int val, int type)
+{
+	struct hda_gen_spec *spec = codec->spec;
+	const struct nid_path *path;
+	int i;
+
+	val &= AMP_VAL_COMPARE_MASK;
+	snd_array_for_each(&spec->paths, i, path) {
+		if ((path->ctls[type] & AMP_VAL_COMPARE_MASK) == val)
+			return true;
+	}
+	return false;
+}
+
+/* check whether a control with the given (nid, dir, idx) was assigned */
+static bool is_ctl_associated(struct hda_codec *codec, hda_nid_t nid,
+			      int dir, int idx, int type)
+{
+	unsigned int val = HDA_COMPOSE_AMP_VAL(nid, 3, idx, dir);
+	return is_ctl_used(codec, val, type);
+}
+
+
+/* return true if either a volume or a mute amp is found for the given
+ * aamix path; the amp has to be either in the mixer node or its direct leaf
+ */
+static bool look_for_mix_leaf_ctls(struct hda_codec *codec, hda_nid_t mix_nid,
+				   hda_nid_t pin, unsigned int *mix_val,
+				   unsigned int *mute_val)
+{
+	int idx, num_conns;
+	const hda_nid_t *list;
+	hda_nid_t nid;
+
+	idx = snd_hda_get_conn_index(codec, mix_nid, pin, true);
+	if (idx < 0)
+		return false;
+
+	*mix_val = *mute_val = 0;
+	if (nid_has_volume(codec, mix_nid, HDA_INPUT))
+		*mix_val = HDA_COMPOSE_AMP_VAL(mix_nid, 3, idx, HDA_INPUT);
+	if (nid_has_mute(codec, mix_nid, HDA_INPUT))
+		*mute_val = HDA_COMPOSE_AMP_VAL(mix_nid, 3, idx, HDA_INPUT);
+	if (*mix_val && *mute_val)
+		return true;
+
+	/* check leaf node */
+	num_conns = snd_hda_get_conn_list(codec, mix_nid, &list);
+	if (num_conns < idx)
+		return false;
+	nid = list[idx];
+	if (!*mix_val && nid_has_volume(codec, nid, HDA_OUTPUT) &&
+	    !is_ctl_associated(codec, nid, HDA_OUTPUT, 0, NID_PATH_VOL_CTL))
+		*mix_val = HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_OUTPUT);
+	if (!*mute_val && nid_has_mute(codec, nid, HDA_OUTPUT) &&
+	    !is_ctl_associated(codec, nid, HDA_OUTPUT, 0, NID_PATH_MUTE_CTL))
+		*mute_val = HDA_COMPOSE_AMP_VAL(nid, 3, 0, HDA_OUTPUT);
+
+	return *mix_val || *mute_val;
+}
+
+
+
+
+/* add dynamic controls from template */
+static struct snd_kcontrol_new *
+add_control(struct hda_gen_spec *spec, int type, const char *name,
+		       int cidx, unsigned long val)
+{
+	struct snd_kcontrol_new *knew;
+
+	knew = snd_hda_gen_add_kctl(spec, name, &control_templates[type]);
+	if (!knew)
+		return NULL;
+	knew->index = cidx;
+	if (get_amp_nid_(val))
+		knew->subdevice = HDA_SUBDEV_AMP_FLAG;
+	knew->private_value = val;
+	return knew;
+}
+
+
+static int add_control_with_pfx(struct hda_gen_spec *spec, int type,
+				const char *pfx, const char *dir,
+				const char *sfx, int cidx, unsigned long val)
+{
+	char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
+	snprintf(name, sizeof(name), "%s %s %s", pfx, dir, sfx);
+	if (!add_control(spec, type, name, cidx, val))
+		return -ENOMEM;
+	return 0;
+}
+
+
+#define add_pb_vol_ctrl(spec, type, pfx, val)			\
+	add_control_with_pfx(spec, type, pfx, "Playback", "Volume", 0, val)
+#define add_pb_sw_ctrl(spec, type, pfx, val)			\
+	add_control_with_pfx(spec, type, pfx, "Playback", "Switch", 0, val)
+#define __add_pb_vol_ctrl(spec, type, pfx, cidx, val)			\
+	add_control_with_pfx(spec, type, pfx, "Playback", "Volume", cidx, val)
+#define __add_pb_sw_ctrl(spec, type, pfx, cidx, val)			\
+	add_control_with_pfx(spec, type, pfx, "Playback", "Switch", cidx, val)
+
+
+/* create input playback/capture controls for the given pin */
+static int new_analog_input(struct hda_codec *codec, int input_idx,
+			    hda_nid_t pin, const char *ctlname, int ctlidx,
+			    hda_nid_t mix_nid)
+{
+	struct hda_gen_spec *spec = codec->spec;
+	struct nid_path *path;
+	unsigned int mix_val, mute_val;
+	int err, idx;
+
+	if (!look_for_mix_leaf_ctls(codec, mix_nid, pin, &mix_val, &mute_val))
+		return 0;
+
+	path = snd_hda_add_new_path(codec, pin, mix_nid, 0);
+	if (!path)
+		return -EINVAL;
+	print_nid_path(codec, "loopback", path);
+	spec->loopback_paths[input_idx] = snd_hda_get_path_idx(codec, path);
+
+	idx = path->idx[path->depth - 1];
+	if (mix_val) {
+		err = __add_pb_vol_ctrl(spec, HDA_CTL_WIDGET_VOL, ctlname, ctlidx, mix_val);
+		if (err < 0)
+			return err;
+		path->ctls[NID_PATH_VOL_CTL] = mix_val;
+	}
+
+	if (mute_val) {
+		err = __add_pb_sw_ctrl(spec, HDA_CTL_WIDGET_MUTE, ctlname, ctlidx, mute_val);
+		if (err < 0)
+			return err;
+		path->ctls[NID_PATH_MUTE_CTL] = mute_val;
+	}
+
+	path->active = true;
+	path->stream_enabled = true; /* no DAC/ADC involved */
+	err = add_loopback_list(spec, mix_nid, idx);
+	if (err < 0)
+		return err;
+
+	if (spec->mixer_nid != spec->mixer_merge_nid &&
+	    !spec->loopback_merge_path) {
+		path = snd_hda_add_new_path(codec, spec->mixer_nid,
+					    spec->mixer_merge_nid, 0);
+		if (path) {
+			print_nid_path(codec, "loopback-merge", path);
+			path->active = true;
+			path->pin_fixed = true; /* static route */
+			path->stream_enabled = true; /* no DAC/ADC involved */
+			spec->loopback_merge_path =
+				snd_hda_get_path_idx(codec, path);
+		}
+	}
+
+	return 0;
+}
+

patch_cs8409.c

@@ -1444,6 +1444,8 @@ void dolphin_fixups(struct hda_codec *codec, const struct hda_fixup *fix, int ac
 	}
 }
 
+static int patch_cs8409_apple(struct hda_codec *codec);
+
 static int patch_cs8409(struct hda_codec *codec)
 {
 	int err;
@@ -1451,8 +1453,19 @@ static int patch_cs8409(struct hda_codec *codec)
 	if (!cs8409_alloc_spec(codec))
 		return -ENOMEM;
 
+	printk("snd_hda_intel: Primary patch_cs8409\n");
+
 	snd_hda_pick_fixup(codec, cs8409_models, cs8409_fixup_tbl, cs8409_fixups);
 
+	// this seems the easiest way to separate and jump into the code for handling Apple machines using the 8409
+	// note now freeing the just allocated spec - this undos the delayed work as not using mutex yet
+	if (codec->fixup_id == HDA_FIXUP_ID_NOT_SET) {
+		printk("snd_hda_intel: Primary patch_cs8409 NOT FOUND trying APPLE\n");
+		cs8409_free(codec);
+		err = patch_cs8409_apple(codec);
+		return err;
+	}
+
 	codec_dbg(codec, "Picked ID=%d, VID=%08x, DEV=%08x\n", codec->fixup_id,
 			 codec->bus->pci->subsystem_vendor,
 			 codec->bus->pci->subsystem_device);
@@ -1469,6 +1482,12 @@ static int patch_cs8409(struct hda_codec *codec)
 	return 0;
 }
 
+
+// for the moment split the new code into an include file
+
+#include "patch_cirrus_apple.h"
+
+
 static const struct hda_device_id snd_hda_id_cs8409[] = {
 	HDA_CODEC_ENTRY(0x10138409, "CS8409", patch_cs8409),
 	{} /* terminator */

patch_cs8409.h

@@ -297,6 +297,23 @@ struct cs8409_cir_param {
 	unsigned int coeff;
 };
 
+
+#ifdef APPLE_CODECS
+struct unsol_item {
+	struct list_head list;
+	unsigned int idx;
+	unsigned int res;
+};
+struct hda_cvt_setup_apple {
+	hda_nid_t nid;
+	u8 stream_tag;
+	u8 channel_id;
+	u16 format_id;
+	unsigned char active;   /* cvt is currently used */
+	unsigned char dirty;    /* setups should be cleared */
+};
+#endif
+
 struct sub_codec {
 	struct hda_codec *codec;
 	unsigned int addr;
@@ -307,6 +324,9 @@ struct sub_codec {
 
 	unsigned int hp_jack_in:1;
 	unsigned int mic_jack_in:1;
+#ifdef APPLE_CODECS
+	unsigned int linein_jack_in:1;
+#endif
 	unsigned int suspended:1;
 	unsigned int paged:1;
 	unsigned int last_page;
@@ -340,6 +360,126 @@ struct cs8409_spec {
 	unsigned int init_done:1;
 	unsigned int build_ctrl_done:1;
 
+#ifdef APPLE_CODECS
+
+	// additional data for Apple 8409 system
+
+	unsigned int spdif_detect:1;
+	unsigned int spdif_present:1;
+	unsigned int sense_b:1;
+	hda_nid_t vendor_nid;
+
+	/* digital beep */
+	hda_nid_t beep_nid;
+
+	/* for MBP SPDIF control */
+	int (*spdif_sw_put)(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *ucontrol);
+
+	// so it appears we have "concurrency" in the linux HDA code
+	// in that if unsolicited responses occur which perform extensive verbs
+	// the hda verbs are intermixed with eg extensive start playback verbs
+	// on OSX we appear to have blocks of verbs during which unsolicited responses
+	// are logged but the unsolicited verbs occur after the verb block
+	// this flag is used to flag such verb blocks and the list will store the
+	// responses
+	// we use a pre-allocated list - if we have more than 10 outstanding unsols
+	// we will drop
+	// not clear if mutexes would be the way to go
+	int block_unsol;
+	struct list_head unsol_list;
+	struct unsol_item unsol_items_prealloc[10];
+	int unsol_items_prealloc_used[10];
+
+	// add in specific nids for the intmike and linein as they seem to swap
+	// between macbook pros (14,3) and imacs (18,3)
+	int intmike_nid;
+	int linein_nid;
+	int intmike_adc_nid;
+	int linein_amp_nid;
+
+	// the following flag bits also need swapping
+	int reg9_intmike_dmic_mo;
+	int reg9_linein_dmic_mo;
+	int reg82_intmike_dmic_scl;
+	int reg82_linein_dmic_scl;
+
+
+	// add explicit stream format store entries as per hda_codec using a local definition
+	// of hda_cvt_setup (which is local to hda_codec.c)
+	// also use explicit nid versions
+	// (except that means either need explicit functions for each nid or have to lookup
+	//  nid each time want to use in a generic function with nid argument)
+	struct hda_cvt_setup_apple nid_0x02;
+	struct hda_cvt_setup_apple nid_0x03;
+	struct hda_cvt_setup_apple nid_0x0a;
+	struct hda_cvt_setup_apple nid_0x22;
+	struct hda_cvt_setup_apple nid_0x23;
+	struct hda_cvt_setup_apple nid_0x1a;
+
+
+	// new item to deal with jack presence as Apple (and now Dell) seems to have barfed
+	// the HDA spec by using a separate headphone chip
+	int jack_present;
+
+	// save the type of headphone connected
+	int headset_type;
+
+	// if headphone has mike or not
+	int have_mike;
+
+	// if headphone has buttons or not
+	int have_buttons;
+
+        // current stream channel count
+        int stream_channels;
+
+	// set when playing for plug/unplug events while playing
+	int playing;
+
+	// set when capturing for plug/unplug events while capturing
+	int capturing;
+
+	// changing coding - OSX sets up the format on plugin
+	// then does some minimal setup when start play
+	// initial coding delayed any format setup till actually play
+	// this works for no mike but not for mike - we need to initialize
+	// the mike on plugin
+	// this flag will be set when we have done the format setup
+	// so know if need to do it on play or not
+	// now need 2 flags - one for play and one for capture
+	int headset_play_format_setup_needed;
+	int headset_capture_format_setup_needed;
+
+	int headset_presetup_done;
+
+
+	int use_data;
+
+
+	// this is new item for dealing with headset plugins
+	// so can distinguish which phase we are in if have multiple interrupts
+	// not really used now have analyzed interrupts properly
+	int headset_phase;
+
+	// another dirty hack item to manage the different headset enable codes
+	int headset_enable;
+
+	int play_init;
+	int capture_init;
+
+
+	// new item to limit times we redo unmute/play
+	struct timespec64 last_play_time;
+	// record the first play time - we have a problem there
+	// some initial plays that I dont understand - so skip any setup
+	// till sometime after the first play
+	struct timespec64 first_play_time;
+
+
+#endif
+
+
 	/* verb exec op override */
 	int (*exec_verb)(struct hdac_device *dev, unsigned int cmd, unsigned int flags,
 			 unsigned int *res);