Commit 404d59c5 authored by Sylwester Nawrocki's avatar Sylwester Nawrocki Committed by Chanwoo Choi
Browse files

PM / devfreq: exynos-bus: Add registration of interconnect child device 



This patch adds registration of a child platform device for the exynos
interconnect driver. It is assumed that the interconnect provider will
only be needed when #interconnect-cells property is present in the bus
DT node, hence the child device will be created only when such a property
is present.

Acked-by: default avatarKrzysztof Kozlowski <krzk@kernel.org>
Acked-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
parent a04c7570

drivers/devfreq/exynos-bus.c

+17 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 


struct exynos_bus {

	struct device *dev;

	struct platform_device *icc_pdev;



	struct devfreq *devfreq;

	struct devfreq_event_dev **edev;
@@ -156,6 +157,8 @@ static void exynos_bus_exit(struct device *dev) 
	if (ret < 0)

		dev_warn(dev, "failed to disable the devfreq-event devices\n");



	platform_device_unregister(bus->icc_pdev);



	dev_pm_opp_of_remove_table(dev);

	clk_disable_unprepare(bus->clk);

	if (bus->opp_table) {
@@ -168,6 +171,8 @@ static void exynos_bus_passive_exit(struct device *dev) 
{

	struct exynos_bus *bus = dev_get_drvdata(dev);



	platform_device_unregister(bus->icc_pdev);



	dev_pm_opp_of_remove_table(dev);

	clk_disable_unprepare(bus->clk);

}
@@ -432,6 +437,18 @@ static int exynos_bus_probe(struct platform_device *pdev) 
	if (ret < 0)

		goto err;



	/* Create child platform device for the interconnect provider */

	if (of_get_property(dev->of_node, "#interconnect-cells", NULL)) {

		bus->icc_pdev = platform_device_register_data(

						dev, "exynos-generic-icc",

						PLATFORM_DEVID_AUTO, NULL, 0);



		if (IS_ERR(bus->icc_pdev)) {

			ret = PTR_ERR(bus->icc_pdev);

			goto err;

		}

	}



	max_state = bus->devfreq->profile->max_state;

	min_freq = (bus->devfreq->profile->freq_table[0] / 1000);

	max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000);

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