Merge "crypto: msm: add suspend/resume callback for qcedev driver" (90202eca) · Commits · e / devices / android_kernel_sony_msm8994

drivers/crypto/msm/qcedev.c

+71 −0

Original line number	Diff line number	Diff line
		@@ -2121,6 +2121,75 @@ static int qcedev_remove(struct platform_device *pdev)
		return 0;
		};

		static int qcedev_suspend(struct platform_device *pdev, pm_message_t state)
		{
		struct qcedev_control *podev;
		int ret;
		podev = platform_get_drvdata(pdev);

		if (!podev \|\| !podev->platform_support.bus_scale_table)
		return 0;

		mutex_lock(&qcedev_sent_bw_req);
		if (podev->high_bw_req_count) {
		ret = msm_bus_scale_client_update_request(
		podev->bus_scale_handle, 0);
		if (ret) {
		pr_err("%s Unable to set to low bandwidth\n",
		__func__);
		goto suspend_exit;
		}
		ret = qce_disable_clk(podev->qce);
		if (ret) {
		pr_err("%s Unable disable clk\n", __func__);
		ret = msm_bus_scale_client_update_request(
		podev->bus_scale_handle, 1);
		if (ret)
		pr_err("%s Unable to set to high bandwidth\n",
		__func__);
		goto suspend_exit;
		}
		}

		suspend_exit:
		mutex_unlock(&qcedev_sent_bw_req);
		return 0;
		}

		static int qcedev_resume(struct platform_device *pdev)
		{
		struct qcedev_control *podev;
		int ret;
		podev = platform_get_drvdata(pdev);

		if (!podev \|\| !podev->platform_support.bus_scale_table)
		return 0;

		mutex_lock(&qcedev_sent_bw_req);
		if (podev->high_bw_req_count) {
		ret = qce_enable_clk(podev->qce);
		if (ret) {
		pr_err("%s Unable enable clk\n", __func__);
		goto resume_exit;
		}
		ret = msm_bus_scale_client_update_request(
		podev->bus_scale_handle, 1);
		if (ret) {
		pr_err("%s Unable to set to high bandwidth\n",
		__func__);
		ret = qce_disable_clk(podev->qce);
		if (ret)
		pr_err("%s Unable enable clk\n",
		__func__);
		goto resume_exit;
		}
		}

		resume_exit:
		mutex_unlock(&qcedev_sent_bw_req);
		return 0;
		}

		static struct of_device_id qcedev_match[] = {
		{ .compatible = "qcom,qcedev",
		},
		@@ -2130,6 +2199,8 @@ static struct of_device_id qcedev_match[] = {
		static struct platform_driver qcedev_plat_driver = {
		.probe = qcedev_probe,
		.remove = qcedev_remove,
		.suspend = qcedev_suspend,
		.resume = qcedev_resume,
		.driver = {
		.name = "qce",
		.owner = THIS_MODULE,