From e5fd91f1ef340da553f7a79da9540c3db711c937 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Tue, 8 Sep 2015 01:01:14 -0300
Subject: Linux-libre 4.2-gnu

---
 sound/soc/intel/haswell/sst-haswell-ipc.c | 14 ++++++++++++++
 sound/soc/intel/haswell/sst-haswell-pcm.c | 32 ++++++++++++++++++++++---------
 2 files changed, 37 insertions(+), 9 deletions(-)

(limited to 'sound/soc/intel/haswell')

diff --git a/sound/soc/intel/haswell/sst-haswell-ipc.c b/sound/soc/intel/haswell/sst-haswell-ipc.c
index 27957a215..670afbe77 100644
--- a/sound/soc/intel/haswell/sst-haswell-ipc.c
+++ b/sound/soc/intel/haswell/sst-haswell-ipc.c
@@ -2098,6 +2098,14 @@ static u64 hsw_reply_msg_match(u64 header, u64 *mask)
 	return header;
 }
 
+static bool hsw_is_dsp_busy(struct sst_dsp *dsp)
+{
+	u64 ipcx;
+
+	ipcx = sst_dsp_shim_read_unlocked(dsp, SST_IPCX);
+	return (ipcx & (SST_IPCX_BUSY | SST_IPCX_DONE));
+}
+
 int sst_hsw_dsp_init(struct device *dev, struct sst_pdata *pdata)
 {
 	struct sst_hsw_ipc_fw_version version;
@@ -2111,12 +2119,18 @@ int sst_hsw_dsp_init(struct device *dev, struct sst_pdata *pdata)
 	if (hsw == NULL)
 		return -ENOMEM;
 
+	hsw->dev = dev;
+
 	ipc = &hsw->ipc;
 	ipc->dev = dev;
 	ipc->ops.tx_msg = hsw_tx_msg;
 	ipc->ops.shim_dbg = hsw_shim_dbg;
 	ipc->ops.tx_data_copy = hsw_tx_data_copy;
 	ipc->ops.reply_msg_match = hsw_reply_msg_match;
+	ipc->ops.is_dsp_busy = hsw_is_dsp_busy;
+
+	ipc->tx_data_max_size = IPC_MAX_MAILBOX_BYTES;
+	ipc->rx_data_max_size = IPC_MAX_MAILBOX_BYTES;
 
 	ret = sst_ipc_init(ipc);
 	if (ret != 0)
diff --git a/sound/soc/intel/haswell/sst-haswell-pcm.c b/sound/soc/intel/haswell/sst-haswell-pcm.c
index 23ae0400d..1aa819c7e 100644
--- a/sound/soc/intel/haswell/sst-haswell-pcm.c
+++ b/sound/soc/intel/haswell/sst-haswell-pcm.c
@@ -928,10 +928,15 @@ static void hsw_pcm_free_modules(struct hsw_priv_data *pdata)
 
 	for (i = 0; i < ARRAY_SIZE(mod_map); i++) {
 		pcm_data = &pdata->pcm[mod_map[i].dai_id][mod_map[i].stream];
-		sst_hsw_runtime_module_free(pcm_data->runtime);
+		if (pcm_data->runtime){
+			sst_hsw_runtime_module_free(pcm_data->runtime);
+			pcm_data->runtime = NULL;
+		}
 	}
-	if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES)) {
+	if (sst_hsw_is_module_loaded(hsw, SST_HSW_MODULE_WAVES) &&
+				pdata->runtime_waves) {
 		sst_hsw_runtime_module_free(pdata->runtime_waves);
+		pdata->runtime_waves = NULL;
 	}
 }
 
@@ -1204,6 +1209,20 @@ static int hsw_pcm_runtime_idle(struct device *dev)
 	return 0;
 }
 
+static int hsw_pcm_suspend(struct device *dev)
+{
+	struct hsw_priv_data *pdata = dev_get_drvdata(dev);
+	struct sst_hsw *hsw = pdata->hsw;
+
+	/* enter D3 state and stall */
+	sst_hsw_dsp_runtime_suspend(hsw);
+	/* free all runtime modules */
+	hsw_pcm_free_modules(pdata);
+	/* put the DSP to sleep, fw unloaded after runtime modules freed */
+	sst_hsw_dsp_runtime_sleep(hsw);
+	return 0;
+}
+
 static int hsw_pcm_runtime_suspend(struct device *dev)
 {
 	struct hsw_priv_data *pdata = dev_get_drvdata(dev);
@@ -1220,8 +1239,7 @@ static int hsw_pcm_runtime_suspend(struct device *dev)
 			return ret;
 		sst_hsw_set_module_enabled_rtd3(hsw, SST_HSW_MODULE_WAVES);
 	}
-	sst_hsw_dsp_runtime_suspend(hsw);
-	sst_hsw_dsp_runtime_sleep(hsw);
+	hsw_pcm_suspend(dev);
 	pdata->pm_state = HSW_PM_STATE_RTD3;
 
 	return 0;
@@ -1328,7 +1346,6 @@ static void hsw_pcm_complete(struct device *dev)
 static int hsw_pcm_prepare(struct device *dev)
 {
 	struct hsw_priv_data *pdata = dev_get_drvdata(dev);
-	struct sst_hsw *hsw = pdata->hsw;
 	struct hsw_pcm_data *pcm_data;
 	int i, err;
 
@@ -1361,10 +1378,7 @@ static int hsw_pcm_prepare(struct device *dev)
 			if (err < 0)
 				dev_err(dev, "failed to save context for PCM %d\n", i);
 		}
-		/* enter D3 state and stall */
-		sst_hsw_dsp_runtime_suspend(hsw);
-		/* put the DSP to sleep */
-		sst_hsw_dsp_runtime_sleep(hsw);
+		hsw_pcm_suspend(dev);
 	}
 
 	snd_soc_suspend(pdata->soc_card->dev);
-- 
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