ASoC: Intel: Skylake: Use UUID in binary format

To avoid complex string manipulations with UUID in canonical
form, use UUID in binary format.

Signed-off-by: Shreyas NC <shreyas.nc@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-sst-dsp.h

@@ -118,7 +118,7 @@ struct skl_dsp_fw_ops {
 	int (*set_state_D0)(struct sst_dsp *ctx);
 	int (*set_state_D3)(struct sst_dsp *ctx);
 	unsigned int (*get_fw_errcode)(struct sst_dsp *ctx);
-	int (*load_mod)(struct sst_dsp *ctx, u16 mod_id, char *mod_name);
+	int (*load_mod)(struct sst_dsp *ctx, u16 mod_id, u8 *mod_name);
 	int (*unload_mod)(struct sst_dsp *ctx, u16 mod_id);
 
 };

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

@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/uuid.h>
 #include "../common/sst-dsp.h"
 #include "../common/sst-dsp-priv.h"
 #include "../common/sst-ipc.h"
@@ -304,14 +305,16 @@ static int skl_transfer_module(struct sst_dsp *ctx,
 	return ret;
 }
 
-static int skl_load_module(struct sst_dsp *ctx, u16 mod_id, char *guid)
+static int skl_load_module(struct sst_dsp *ctx, u16 mod_id, u8 *guid)
 {
 	struct skl_module_table *module_entry = NULL;
 	int ret = 0;
 	char mod_name[64]; /* guid str = 32 chars + 4 hyphens */
+	uuid_le *uuid_mod;
 
-	snprintf(mod_name, sizeof(mod_name), "%s%s%s",
-			"intel/dsp_fw_", guid, ".bin");
+	uuid_mod = (uuid_le *)guid;
+	snprintf(mod_name, sizeof(mod_name), "%s%pUL%s",
+				"intel/dsp_fw_", uuid_mod, ".bin");
 
 	module_entry = skl_module_get_from_id(ctx, mod_id);
 	if (module_entry == NULL) {

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

@@ -1550,6 +1550,8 @@ static int skl_tplg_widget_load(struct snd_soc_component *cmpnt,
 		return -ENOMEM;
 
 	w->priv = mconfig;
+	memcpy(&mconfig->guid, &dfw_config->uuid, 16);
+
 	mconfig->id.module_id = dfw_config->module_id;
 	mconfig->id.instance_id = dfw_config->instance_id;
 	mconfig->mcps = dfw_config->max_mcps;
@@ -1579,10 +1581,6 @@ static int skl_tplg_widget_load(struct snd_soc_component *cmpnt,
 	mconfig->time_slot = dfw_config->time_slot;
 	mconfig->formats_config.caps_size = dfw_config->caps.caps_size;
 
-	if (dfw_config->is_loadable)
-		memcpy(mconfig->guid, dfw_config->uuid,
-					ARRAY_SIZE(dfw_config->uuid));
-
 	mconfig->m_in_pin = devm_kzalloc(bus->dev, (mconfig->max_in_queue) *
 						sizeof(*mconfig->m_in_pin),
 						GFP_KERNEL);

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

@@ -281,7 +281,7 @@ enum skl_module_state {
 };
 
 struct skl_module_cfg {
-	char guid[SKL_UUID_STR_SZ];
+	u8 guid[16];
 	struct skl_module_inst_id id;
 	u8 domain;
 	bool homogenous_inputs;

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

@@ -181,7 +181,7 @@ struct skl_dfw_pipe {
 } __packed;
 
 struct skl_dfw_module {
-	char uuid[SKL_UUID_STR_SZ];
+	u8 uuid[16];
 
 	u16 module_id;
 	u16 instance_id;