ASoC: Intel: Skylake: Add dsp cores management

This patch adds support to manage additional cores on a demand basis.
For instance, if module is set to run on certain core, the particular
core is powered up in module init. The same is again powered down in
module unload.

Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@intel.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.singh@intel.com>
Acked-By: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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

@@ -596,24 +596,35 @@ skl_tplg_init_pipe_modules(struct skl *skl, struct skl_pipe *pipe)
 		if (mconfig->id.pvt_id < 0)
 			return ret;
 		skl_tplg_set_module_init_data(w);
+
+		ret = skl_dsp_get_core(ctx->dsp, mconfig->core_id);
+		if (ret < 0) {
+			dev_err(ctx->dev, "Failed to wake up core %d ret=%d\n",
+						mconfig->core_id, ret);
+			return ret;
+		}
+
 		ret = skl_init_module(ctx, mconfig);
 		if (ret < 0) {
 			skl_put_pvt_id(ctx, uuid_mod, &mconfig->id.pvt_id);
-			return ret;
+			goto err;
 		}
 		skl_tplg_alloc_pipe_mcps(skl, mconfig);
 		ret = skl_tplg_set_module_params(w, ctx);
 		if (ret < 0)
-			return ret;
+			goto err;
 	}
 
 	return 0;
+err:
+	skl_dsp_put_core(ctx->dsp, mconfig->core_id);
+	return ret;
 }
 
 static int skl_tplg_unload_pipe_modules(struct skl_sst *ctx,
 	 struct skl_pipe *pipe)
 {
-	int ret;
+	int ret = 0;
 	struct skl_pipe_module *w_module = NULL;
 	struct skl_module_cfg *mconfig = NULL;
 
@@ -630,10 +641,17 @@ static int skl_tplg_unload_pipe_modules(struct skl_sst *ctx,
 				return -EIO;
 		}
 		skl_put_pvt_id(ctx, uuid_mod, &mconfig->id.pvt_id);
+
+		ret = skl_dsp_put_core(ctx->dsp, mconfig->core_id);
+		if (ret < 0) {
+			/* don't return; continue with other modules */
+			dev_err(ctx->dev, "Failed to sleep core %d ret=%d\n",
+				mconfig->core_id, ret);
+		}
 	}
 
 	/* no modules to unload in this path, so return */
-	return 0;
+	return ret;
 }
 
 /*