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

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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: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
This commit is contained in:
Sylwester Nawrocki 2020-11-12 15:09:30 +01:00 committed by Chanwoo Choi
parent a04c757046
commit 404d59c57b
1 changed files with 17 additions and 0 deletions
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17
drivers/devfreq/exynos-bus.c
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@ -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);