[PATCH] [net,v2] net: wwan: t7xx: add PM_AUTOSUSPEND_MS_BY_DW5933E for Dell DW5933e

[wojackbb at gmail.com]

From: Jack Wu <wojackbb at gmail.com>

Because optimizing the power consumption of Dell DW5933e,
Add a new auto suspend time for Dell DW5933e.

Signed-off-by: Jack Wu <wojackbb at gmail.com>
---
 drivers/net/wwan/t7xx/t7xx_pci.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index e556e5bd49ab..ec567153ea6e 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -49,6 +49,7 @@
 #define PM_SLEEP_DIS_TIMEOUT_MS		20
 #define PM_ACK_TIMEOUT_MS		1500
 #define PM_AUTOSUSPEND_MS		20000
+#define PM_AUTOSUSPEND_MS_BY_DW5933E 5000
 #define PM_RESOURCE_POLL_TIMEOUT_US	10000
 #define PM_RESOURCE_POLL_STEP_US	100
 
@@ -174,7 +175,7 @@ static int t7xx_wait_pm_config(struct t7xx_pci_dev *t7xx_dev)
 	return ret;
 }
 
-static int t7xx_pci_pm_init(struct t7xx_pci_dev *t7xx_dev)
+static int t7xx_pci_pm_init(struct t7xx_pci_dev *t7xx_dev, int pm_autosuspend_ms)
 {
 	struct pci_dev *pdev = t7xx_dev->pdev;
 
@@ -191,7 +192,7 @@ static int t7xx_pci_pm_init(struct t7xx_pci_dev *t7xx_dev)
 				DPM_FLAG_NO_DIRECT_COMPLETE);
 
 	iowrite32(T7XX_L1_BIT(0), IREG_BASE(t7xx_dev) + DISABLE_ASPM_LOWPWR);
-	pm_runtime_set_autosuspend_delay(&pdev->dev, PM_AUTOSUSPEND_MS);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, pm_autosuspend_ms);
 	pm_runtime_use_autosuspend(&pdev->dev);
 
 	return 0;
@@ -824,7 +825,13 @@ static int t7xx_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	IREG_BASE(t7xx_dev) = pcim_iomap_table(pdev)[T7XX_PCI_IREG_BASE];
 	t7xx_dev->base_addr.pcie_ext_reg_base = pcim_iomap_table(pdev)[T7XX_PCI_EREG_BASE];
 
-	ret = t7xx_pci_pm_init(t7xx_dev);
+	if (id->vendor == 0x14c0 && id->device == 0x4d75) {
+		/* Dell DW5933e */
+		ret = t7xx_pci_pm_init(t7xx_dev, PM_AUTOSUSPEND_MS_BY_DW5933E);
+	} else {
+		/* Other devices */
+		ret = t7xx_pci_pm_init(t7xx_dev, PM_AUTOSUSPEND_MS);
+	}
 	if (ret)
 		return ret;
 
-- 
2.34.1