ASoC: Intel: Skylake: Add tlv byte kcontrols

This adds tlv bytes topology control creation and control load to
initialize kcontrol data. And this also adds the callbacks for
the these tlv byte kcontrols

Signed-off-by: Mythri P K <mythri.p.k@intel.com>
Signed-off-by: Divya Prakash <divya1.prakash@intel.com>
Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-topology.c

@@ -875,6 +875,60 @@ static int skl_tplg_pga_event(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
+static int skl_tplg_tlv_control_get(struct snd_kcontrol *kcontrol,
+			unsigned int __user *data, unsigned int size)
+{
+	struct soc_bytes_ext *sb =
+			(struct soc_bytes_ext *)kcontrol->private_value;
+	struct skl_algo_data *bc = (struct skl_algo_data *)sb->dobj.private;
+
+	if (bc->params) {
+		if (copy_to_user(data, &bc->param_id, sizeof(u32)))
+			return -EFAULT;
+		if (copy_to_user(data + sizeof(u32), &size, sizeof(u32)))
+			return -EFAULT;
+		if (copy_to_user(data + 2 * sizeof(u32), bc->params, size))
+			return -EFAULT;
+	}
+
+	return 0;
+}
+
+#define SKL_PARAM_VENDOR_ID 0xff
+
+static int skl_tplg_tlv_control_set(struct snd_kcontrol *kcontrol,
+			const unsigned int __user *data, unsigned int size)
+{
+	struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
+	struct skl_module_cfg *mconfig = w->priv;
+	struct soc_bytes_ext *sb =
+			(struct soc_bytes_ext *)kcontrol->private_value;
+	struct skl_algo_data *ac = (struct skl_algo_data *)sb->dobj.private;
+	struct skl *skl = get_skl_ctx(w->dapm->dev);
+
+	if (ac->params) {
+		/*
+		 * if the param_is is of type Vendor, firmware expects actual
+		 * parameter id and size from the control.
+		 */
+		if (ac->param_id == SKL_PARAM_VENDOR_ID) {
+			if (copy_from_user(ac->params, data, size))
+				return -EFAULT;
+		} else {
+			if (copy_from_user(ac->params,
+					   data + 2 * sizeof(u32), size))
+				return -EFAULT;
+		}
+
+		if (w->power)
+			return skl_set_module_params(skl->skl_sst,
+						(u32 *)ac->params, ac->max,
+						ac->param_id, mconfig);
+	}
+
+	return 0;
+}
+
 /*
  * The FE params are passed by hw_params of the DAI.
  * On hw_params, the params are stored in Gateway module of the FE and we
@@ -1125,6 +1179,11 @@ static const struct snd_soc_tplg_widget_events skl_tplg_widget_ops[] = {
 	{SKL_PGA_EVENT, skl_tplg_pga_event},
 };
 
+static const struct snd_soc_tplg_bytes_ext_ops skl_tlv_ops[] = {
+	{SKL_CONTROL_TYPE_BYTE_TLV, skl_tplg_tlv_control_get,
+					skl_tplg_tlv_control_set},
+};
+
 /*
  * The topology binary passes the pin info for a module so initialize the pin
  * info passed into module instance
@@ -1321,8 +1380,70 @@ bind_event:
 	return 0;
 }
 
+static int skl_init_algo_data(struct device *dev, struct soc_bytes_ext *be,
+					struct snd_soc_tplg_bytes_control *bc)
+{
+	struct skl_algo_data *ac;
+	struct skl_dfw_algo_data *dfw_ac =
+				(struct skl_dfw_algo_data *)bc->priv.data;
+
+	ac = devm_kzalloc(dev, sizeof(*ac), GFP_KERNEL);
+	if (!ac)
+		return -ENOMEM;
+
+	/* Fill private data */
+	ac->max = dfw_ac->max;
+	ac->param_id = dfw_ac->param_id;
+	ac->set_params = dfw_ac->set_params;
+
+	if (ac->max) {
+		ac->params = (char *) devm_kzalloc(dev, ac->max, GFP_KERNEL);
+		if (!ac->params)
+			return -ENOMEM;
+
+		if (dfw_ac->params)
+			memcpy(ac->params, dfw_ac->params, ac->max);
+	}
+
+	be->dobj.private  = ac;
+	return 0;
+}
+
+static int skl_tplg_control_load(struct snd_soc_component *cmpnt,
+				struct snd_kcontrol_new *kctl,
+				struct snd_soc_tplg_ctl_hdr *hdr)
+{
+	struct soc_bytes_ext *sb;
+	struct snd_soc_tplg_bytes_control *tplg_bc;
+	struct hdac_ext_bus *ebus  = snd_soc_component_get_drvdata(cmpnt);
+	struct hdac_bus *bus = ebus_to_hbus(ebus);
+
+	switch (hdr->ops.info) {
+	case SND_SOC_TPLG_CTL_BYTES:
+		tplg_bc = container_of(hdr,
+				struct snd_soc_tplg_bytes_control, hdr);
+		if (kctl->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
+			sb = (struct soc_bytes_ext *)kctl->private_value;
+			if (tplg_bc->priv.size)
+				return skl_init_algo_data(
+						bus->dev, sb, tplg_bc);
+		}
+		break;
+
+	default:
+		dev_warn(bus->dev, "Control load not supported %d:%d:%d\n",
+			hdr->ops.get, hdr->ops.put, hdr->ops.info);
+		break;
+	}
+
+	return 0;
+}
+
 static struct snd_soc_tplg_ops skl_tplg_ops  = {
 	.widget_load = skl_tplg_widget_load,
+	.control_load = skl_tplg_control_load,
+	.bytes_ext_ops = skl_tlv_ops,
+	.bytes_ext_ops_count = ARRAY_SIZE(skl_tlv_ops),
 };
 
 /* This will be read from topology manifest, currently defined here */

sound/soc/intel/skylake/skl-tplg-interface.h

@@ -23,10 +23,7 @@
  * Default types range from 0~12. type can range from 0 to 0xff
  * SST types start at higher to avoid any overlapping in future
  */
-#define SOC_CONTROL_TYPE_HDA_SST_ALGO_PARAMS	0x100
-#define SOC_CONTROL_TYPE_HDA_SST_MUX		0x101
-#define SOC_CONTROL_TYPE_HDA_SST_MIX		0x101
-#define SOC_CONTROL_TYPE_HDA_SST_BYTE		0x103
+#define SKL_CONTROL_TYPE_BYTE_TLV	0x100
 
 #define HDA_SST_CFG_MAX	900 /* size of copier cfg*/
 #define MAX_IN_QUEUE 8
@@ -218,8 +215,8 @@ struct skl_dfw_module {
 struct skl_dfw_algo_data {
 	u32 set_params:1;
 	u32 rsvd:31;
-	u32 param_id;
 	u32 max;
+	u32 param_id;
 	char params[0];
 } __packed;