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Subject[PATCH v2 5/7] clk: raspberrypi: register platform device for raspberrypi-cpufreq
Date
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>
---
drivers/clk/bcm/clk-raspberrypi.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
index b1365cf19f3a..052296b5fbe4 100644
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -63,6 +63,8 @@ struct raspberrypi_firmware_prop {
__le32 disable_turbo;
} __packed;

+static struct platform_device *rpi_cpufreq;
+
static int raspberrypi_clock_property(struct rpi_firmware *firmware, u32 tag,
u32 clk, u32 *val)
{
@@ -285,6 +287,17 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
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)
+{
+ platform_device_unregister(rpi_cpufreq);
+ rpi_cpufreq = NULL;
+
return 0;
}

@@ -293,6 +306,7 @@ static struct platform_driver raspberrypi_clk_driver = {
.name = "raspberrypi-clk",
},
.probe = raspberrypi_clk_probe,
+ .remove = raspberrypi_clk_remove,
};
module_platform_driver(raspberrypi_clk_driver);

--
2.21.0
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