soc: fix HS LPI issue for holi target

- Skip audio hm voting during bootup.
- Vote and unvote audio hm vote during swrm_runtime_suspend
  and swrm_runtime_resume

Change-Id: I7a9c20f62ba0d87779b26da218bfe7373132b565

soc/swr-mstr-ctrl.c

@@ -2751,6 +2751,11 @@ static int swrm_probe(struct platform_device *pdev)
 	}
 	devm_kfree(&pdev->dev, temp);
 
+	ret = of_property_read_u32(pdev->dev.of_node, "qcom,is-always-on",
+				&swrm->is_always_on);
+	if (ret)
+		dev_dbg(&pdev->dev, "%s: failed to get is_always_on flag\n", __func__);
+
 	swrm->reg_irq = pdata->reg_irq;
 	swrm->master.read = swrm_read;
 	swrm->master.write = swrm_write;
@@ -2873,7 +2878,7 @@ static int swrm_probe(struct platform_device *pdev)
 	 * controller will be up now
 	 */
 	swr_master_add_boarddevices(&swrm->master);
-	if (swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, true))
+	if (!swrm->is_always_on && swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, true))
 		dev_dbg(&pdev->dev, "%s: Audio HW Vote is failed\n", __func__);
 	mutex_lock(&swrm->mlock);
 	swrm_clk_request(swrm, true);
@@ -3021,7 +3026,7 @@ static int swrm_runtime_resume(struct device *dev)
 	struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
 	int ret = 0;
 	bool swrm_clk_req_err = false;
-	bool hw_core_err = false;
+	bool hw_core_err = false, aud_core_err = false;
 	struct swr_master *mstr = &swrm->master;
 	struct swr_device *swr_dev;
 	u32 temp = 0;
@@ -3037,9 +3042,11 @@ static int swrm_runtime_resume(struct device *dev)
 			__func__);
 		hw_core_err = true;
 	}
-	if (swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, true))
+	if (swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, true)) {
 		dev_err(dev, "%s:lpass audio hw enable failed\n",
 			__func__);
+		aud_core_err = true;
+	}
 
 	if ((swrm->state == SWR_MSTR_DOWN) ||
 	    (swrm->state == SWR_MSTR_SSR && swrm->dev_up)) {
@@ -3130,6 +3137,9 @@ static int swrm_runtime_resume(struct device *dev)
 		swrm->state = SWR_MSTR_UP;
 	}
 exit:
+	if (swrm->is_always_on && !aud_core_err)
+		swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, false);
+
 	if (!hw_core_err)
 		swrm_request_hw_vote(swrm, LPASS_HW_CORE, false);
 	if (swrm_clk_req_err)
@@ -3152,7 +3162,7 @@ static int swrm_runtime_suspend(struct device *dev)
 	struct platform_device *pdev = to_platform_device(dev);
 	struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
 	int ret = 0;
-	bool hw_core_err = false;
+	bool hw_core_err = false, aud_core_err = false;
 	struct swr_master *mstr = &swrm->master;
 	struct swr_device *swr_dev;
 	int current_state = 0;
@@ -3172,6 +3182,8 @@ static int swrm_runtime_suspend(struct device *dev)
 		hw_core_err = true;
 	}
 
+	if (swrm->is_always_on && swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, true))
+		aud_core_err = true;
 	if ((current_state == SWR_MSTR_UP) ||
 	    (current_state == SWR_MSTR_SSR)) {
 
@@ -3253,11 +3265,12 @@ static int swrm_runtime_suspend(struct device *dev)
 		swrm->state = SWR_MSTR_DOWN;
 
 exit:
-	if (swrm->state != SWR_MSTR_UP) {
+	if (!swrm->is_always_on && swrm->state != SWR_MSTR_UP) {
 		if (swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, false))
 			dev_dbg(dev, "%s:lpass audio hw enable failed\n",
 			__func__);
-	}
+	} else if (swrm->is_always_on && !aud_core_err)
+		swrm_request_hw_vote(swrm, LPASS_AUDIO_CORE, false);
 
 	if (!hw_core_err)
 		swrm_request_hw_vote(swrm, LPASS_HW_CORE, false);

soc/swr-mstr-ctrl.h

@@ -194,6 +194,7 @@ struct swr_mstr_ctrl {
 	u32 wr_fifo_depth;
 	bool enable_slave_irq;
 	u64 logical_dev[SWRM_NUM_AUTO_ENUM_SLAVES];
+	u32 is_always_on;
 #ifdef CONFIG_DEBUG_FS
 	struct dentry *debugfs_swrm_dent;
 	struct dentry *debugfs_peek;