Merge "msm_11ad: disbale L1 for 11ad device" (8e2e1b3d) · Commits · e / devices / android_kernel_sony_msm8998

drivers/platform/msm/msm_11ad/msm_11ad.c

+48 −0

Original line number	Diff line number	Diff line
		@@ -51,6 +51,9 @@
		#define VDDIO_MAX_UV 2040000
		#define VDDIO_MAX_UA 70300

		#define DISABLE_PCIE_L1_MASK 0xFFFFFFFD
		#define PCIE20_CAP_LINKCTRLSTATUS 0x80

		struct device;

		static const char * const gpio_en_name = "qcom,wigig-en";
		@@ -505,6 +508,7 @@ static int ops_resume(void *handle)
		int rc;
		struct msm11ad_ctx *ctx = handle;
		struct pci_dev *pcidev;
		u32 val;

		pr_info("%s(%p)\n", __func__, handle);
		if (!ctx) {
		@@ -548,6 +552,27 @@ static int ops_resume(void *handle)
		goto err_suspend_rc;
		}

		/* Disable L1 */
		rc = pci_read_config_dword(ctx->pcidev,
		PCIE20_CAP_LINKCTRLSTATUS, &val);
		if (rc) {
		dev_err(ctx->dev,
		"reading PCIE20_CAP_LINKCTRLSTATUS failed:%d\n",
		rc);
		goto err_suspend_rc;
		}
		val &= DISABLE_PCIE_L1_MASK; /* disable bit 1 */
		dev_dbg(ctx->dev, "writing PCIE20_CAP_LINKCTRLSTATUS (val 0x%x)\n",
		val);
		rc = pci_write_config_dword(ctx->pcidev,
		PCIE20_CAP_LINKCTRLSTATUS, val);
		if (rc) {
		dev_err(ctx->dev,
		"writing PCIE20_CAP_LINKCTRLSTATUS (val 0x%x) failed:%d\n",
		val, rc);
		goto err_suspend_rc;
		}

		return 0;

		err_suspend_rc:
		@@ -792,6 +817,7 @@ static int msm_11ad_probe(struct platform_device *pdev)
		struct device_node *rc_node;
		struct pci_dev *pcidev = NULL;
		int rc;
		u32 val;

		ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
		if (!ctx)
		@@ -907,6 +933,28 @@ static int msm_11ad_probe(struct platform_device *pdev)
		goto out_rc;
		}
		ctx->pcidev = pcidev;

		/* Disable L1 */
		rc = pci_read_config_dword(ctx->pcidev,
		PCIE20_CAP_LINKCTRLSTATUS, &val);
		if (rc) {
		dev_err(ctx->dev,
		"reading PCIE20_CAP_LINKCTRLSTATUS failed:%d\n",
		rc);
		goto out_rc;
		}
		val &= DISABLE_PCIE_L1_MASK; /* disable bit 1 */
		dev_dbg(ctx->dev, "writing PCIE20_CAP_LINKCTRLSTATUS (val 0x%x)\n",
		val);
		rc = pci_write_config_dword(ctx->pcidev,
		PCIE20_CAP_LINKCTRLSTATUS, val);
		if (rc) {
		dev_err(ctx->dev,
		"writing PCIE20_CAP_LINKCTRLSTATUS (val 0x%x) failed:%d\n",
		val, rc);
		goto out_rc;
		}

		rc = pci_save_state(pcidev);
		if (rc) {
		dev_err(ctx->dev, "pci_save_state failed :%d\n", rc);