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authorNicolas Saenz Julienne <nsaenzjulienne@suse.de>2019-06-12 20:24:57 +0200
committerStephen Boyd <sboyd@kernel.org>2019-06-25 16:04:28 -0700
commite2bb18347c8e5c4187831f3700c380e3c759601a (patch)
tree72c1631ad1c7d11226123a44ee663e605d1d8e95 /drivers/clk
parentfirmware: raspberrypi: register clk device (diff)
downloadlinux-dev-e2bb18347c8e5c4187831f3700c380e3c759601a.tar.xz
linux-dev-e2bb18347c8e5c4187831f3700c380e3c759601a.zip
clk: raspberrypi: register platform device for raspberrypi-cpufreq
As 'clk-raspberrypi' depends on RPi's firmware interface, which might be configured as a module, the cpu clock might not be available for the cpufreq driver during it's init process. So we register the 'raspberrypi-cpufreq' platform device after the probe sequence succeeds. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/bcm/clk-raspberrypi.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
index fef1f7caee4f..1654fd0eedc9 100644
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -34,6 +34,7 @@
struct raspberrypi_clk {
struct device *dev;
struct rpi_firmware *firmware;
+ struct platform_device *cpufreq;
unsigned long min_rate;
unsigned long max_rate;
@@ -272,6 +273,7 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
rpi->dev = dev;
rpi->firmware = firmware;
+ platform_set_drvdata(pdev, rpi);
ret = raspberrypi_register_pllb(rpi);
if (ret) {
@@ -283,6 +285,18 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
if (ret)
return ret;
+ rpi->cpufreq = platform_device_register_data(dev, "raspberrypi-cpufreq",
+ -1, NULL, 0);
+
+ return 0;
+}
+
+static int raspberrypi_clk_remove(struct platform_device *pdev)
+{
+ struct raspberrypi_clk *rpi = platform_get_drvdata(pdev);
+
+ platform_device_unregister(rpi->cpufreq);
+
return 0;
}
@@ -291,6 +305,7 @@ static struct platform_driver raspberrypi_clk_driver = {
.name = "raspberrypi-clk",
},
.probe = raspberrypi_clk_probe,
+ .remove = raspberrypi_clk_remove,
};
module_platform_driver(raspberrypi_clk_driver);