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Commit e1826bc8 authored by Liron Kuch's avatar Liron Kuch
Browse files

msm: tsc: Allow driver to work without bus scaling 



The TSC driver uses the bus scaling API to request bus
bandwidth. However, the bus scaling feature may be completely disabled.
In this case, allow the TSC driver to operate as usual.

Change-Id: I0781213dd9131efd94a30670fa4ddb0a6c70d7db
Signed-off-by: default avatarLiron Kuch <lkuch@codeaurora.org>
parent 48e8b938

drivers/media/platform/msm/broadcast/tsc.c

+16 −9
Original line number Diff line number Diff line
@@ -1951,6 +1951,7 @@ static void tsc_device_power_off(void) 
			tsc_device->pinctrl_info.disable);

	if (tsc_device->bus_client)

		msm_bus_scale_client_update_request(tsc_device->bus_client, 0);



	tsc_power_off_clocks();

	regulator_disable(tsc_device->gdsc);
@@ -2598,18 +2599,20 @@ static int tsc_get_regulator_bus(struct platform_device *pdev) 
	/* Reading the bus platform data */

	tsc_bus_pdata = msm_bus_cl_get_pdata(pdev);

	if (tsc_bus_pdata == NULL) {

		dev_err(&pdev->dev, "%s: Could not find the bus property\n",

		dev_err(&pdev->dev, "%s: Could not find the bus property. Continue anyway...\n",

				__func__);

		goto err;

	}



	/* Register the bus client */

	tsc_device->bus_client = msm_bus_scale_register_client(tsc_bus_pdata);

	if (tsc_bus_pdata) {

		tsc_device->bus_client =

				msm_bus_scale_register_client(tsc_bus_pdata);

		if (!tsc_device->bus_client) {

			dev_err(&pdev->dev, "%s: Unable to register bus client\n",

					__func__);

			goto err;

		}

	}



	return 0;

err:
@@ -3089,7 +3092,9 @@ err_chdev_mux: 
	class_destroy(tsc_class);

err_class:

err_pinctrl:

	if (tsc_device->bus_client)

		msm_bus_scale_unregister_client(tsc_device->bus_client);



	devm_regulator_put(tsc_device->gdsc);

err_get_regulator_bus:

	tsc_free_irqs();
@@ -3131,7 +3136,9 @@ static int msm_tsc_remove(struct platform_device *pdev) 
	class_destroy(tsc_class);



	/* Unregister the bus client and the regulator */

	if (tsc_device->bus_client)

		msm_bus_scale_unregister_client(tsc_device->bus_client);



	devm_regulator_put(tsc_device->gdsc);



	/* Free the IRQs */