[PATCH v2 5/7] clk: raspberrypi: register platform device for raspberrypi-cpufreq

[Nicolas Saenz Julienne]

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 <nsaenzjulie...@suse.de>
Acked-by: Eric Anholt <e...@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