net: cnss: add PM QoS support for dual WiFi

PM QoS adds support to improve the wlan throughput.
The cnss platform driver export PM QoS API to wlan
host driver.

Refactor PM QoS wrapper APIs to avoid the name space
collision in cnss platform driver compilation in dual WiFi
mode.

CRs-Fixed: 983653
Change-Id: Id7a486f2f111476e73d5707eba36611a3530e9cf
Signed-off-by: Sarada Prasanna Garnayak <sgarna@codeaurora.org>

2 files changed, 104 insertions, 0 deletions

diff --git a/drivers/net/wireless/cnss/cnss_pci.c b/drivers/net/wireless/cnss/cnss_pci.c
index 00d3f2a1fd3f..2e01ae9528f2 100644
--- a/drivers/net/wireless/cnss/cnss_pci.c
+++ b/drivers/net/wireless/cnss/cnss_pci.c
@@ -2810,6 +2810,72 @@ void cnss_remove_pm_qos(void)
 }
 EXPORT_SYMBOL(cnss_remove_pm_qos);
 
+void cnss_pci_request_pm_qos_type(int latency_type, u32 qos_val)
+{
+	if (!penv) {
+		pr_err("%s: penv is NULL\n", __func__);
+		return;
+	}
+
+	pm_qos_add_request(&penv->qos_request, latency_type, qos_val);
+}
+EXPORT_SYMBOL(cnss_pci_request_pm_qos_type);
+
+void cnss_pci_request_pm_qos(u32 qos_val)
+{
+	if (!penv) {
+		pr_err("%s: penv is NULL\n", __func__);
+		return;
+	}
+
+	pm_qos_add_request(&penv->qos_request, PM_QOS_CPU_DMA_LATENCY, qos_val);
+}
+EXPORT_SYMBOL(cnss_pci_request_pm_qos);
+
+void cnss_pci_remove_pm_qos(void)
+{
+	if (!penv) {
+		pr_err("%s: penv is NULL\n", __func__);
+		return;
+	}
+
+	pm_qos_remove_request(&penv->qos_request);
+}
+EXPORT_SYMBOL(cnss_pci_remove_pm_qos);
+
+int cnss_pci_request_bus_bandwidth(int bandwidth)
+{
+	int ret = 0;
+
+	if (!penv)
+		return -ENODEV;
+
+	if (!penv->bus_client)
+		return -ENOSYS;
+
+	switch (bandwidth) {
+	case CNSS_BUS_WIDTH_NONE:
+	case CNSS_BUS_WIDTH_LOW:
+	case CNSS_BUS_WIDTH_MEDIUM:
+	case CNSS_BUS_WIDTH_HIGH:
+		ret = msm_bus_scale_client_update_request(
+				penv->bus_client, bandwidth);
+		if (!ret) {
+			penv->current_bandwidth_vote = bandwidth;
+		} else {
+			pr_err("%s: could not set bus bandwidth %d, ret = %d\n",
+			       __func__, bandwidth, ret);
+		}
+		break;
+
+	default:
+		pr_err("%s: Invalid request %d", __func__, bandwidth);
+		ret = -EINVAL;
+	}
+	return ret;
+}
+EXPORT_SYMBOL(cnss_pci_request_bus_bandwidth);
+
 int cnss_request_bus_bandwidth(int bandwidth)
 {
 	int ret = 0;
diff --git a/drivers/net/wireless/cnss/cnss_sdio.c b/drivers/net/wireless/cnss/cnss_sdio.c
index baf81d851688..7cdd2a033caf 100644
--- a/drivers/net/wireless/cnss/cnss_sdio.c
+++ b/drivers/net/wireless/cnss/cnss_sdio.c
@@ -125,6 +125,44 @@ static const struct sdio_device_id ar6k_id_table[] = {
 };
 MODULE_DEVICE_TABLE(sdio, ar6k_id_table);
 
+void cnss_sdio_request_pm_qos_type(int latency_type, u32 qos_val)
+{
+	if (!cnss_pdata)
+		return;
+
+	pr_debug("%s: PM QoS value: %d\n", __func__, qos_val);
+	pm_qos_add_request(&cnss_pdata->qos_request, latency_type, qos_val);
+}
+EXPORT_SYMBOL(cnss_sdio_request_pm_qos_type);
+
+int cnss_sdio_request_bus_bandwidth(int bandwidth)
+{
+	return 0;
+}
+EXPORT_SYMBOL(cnss_sdio_request_bus_bandwidth);
+
+void cnss_sdio_request_pm_qos(u32 qos_val)
+{
+	if (!cnss_pdata)
+		return;
+
+	pr_debug("%s: PM QoS value: %d\n", __func__, qos_val);
+	pm_qos_add_request(
+		&cnss_pdata->qos_request,
+		PM_QOS_CPU_DMA_LATENCY, qos_val);
+}
+EXPORT_SYMBOL(cnss_sdio_request_pm_qos);
+
+void cnss_sdio_remove_pm_qos(void)
+{
+	if (!cnss_pdata)
+		return;
+
+	pm_qos_remove_request(&cnss_pdata->qos_request);
+	pr_debug("%s: PM QoS removed\n", __func__);
+}
+EXPORT_SYMBOL(cnss_sdio_remove_pm_qos);
+
 int cnss_request_bus_bandwidth(int bandwidth)
 {
 	return 0;