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firmware: raspberrypi: Register hwmon driver

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Since the raspberrypi-hwmon driver is tied to the VC4 firmware instead of
particular hardware its registration should be in the firmware driver.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Stefan Wahren 2018-05-25 21:24:36 +02:00 committed by Florian Fainelli
parent 74d1e00791
commit 70eea1bbb5
1 changed files with 19 additions and 0 deletions
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19
drivers/firmware/raspberrypi.c
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@ -21,6 +21,8 @@
#define MBOX_DATA28(msg) ((msg) & ~0xf) #define MBOX_DATA28(msg) ((msg) & ~0xf)
#define MBOX_CHAN_PROPERTY 8 #define MBOX_CHAN_PROPERTY 8
static struct platform_device *rpi_hwmon;
struct rpi_firmware { struct rpi_firmware {
struct mbox_client cl; struct mbox_client cl;
struct mbox_chan *chan; /* The property channel. */ struct mbox_chan *chan; /* The property channel. */
@ -183,6 +185,20 @@ rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
} }
} }
static void
rpi_register_hwmon_driver(struct device *dev, struct rpi_firmware *fw)
{
u32 packet;
int ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_THROTTLED,
&packet, sizeof(packet));
if (ret)
return;
rpi_hwmon = platform_device_register_data(dev, "raspberrypi-hwmon",
-1, NULL, 0);
}
static int rpi_firmware_probe(struct platform_device *pdev) static int rpi_firmware_probe(struct platform_device *pdev)
{ {
struct device *dev = &pdev->dev; struct device *dev = &pdev->dev;
@ -209,6 +225,7 @@ static int rpi_firmware_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, fw); platform_set_drvdata(pdev, fw);
rpi_firmware_print_firmware_revision(fw); rpi_firmware_print_firmware_revision(fw);
rpi_register_hwmon_driver(dev, fw);
return 0; return 0;
} }
@ -217,6 +234,8 @@ static int rpi_firmware_remove(struct platform_device *pdev)
{ {
struct rpi_firmware *fw = platform_get_drvdata(pdev); struct rpi_firmware *fw = platform_get_drvdata(pdev);
platform_device_unregister(rpi_hwmon);
rpi_hwmon = NULL;
mbox_free_channel(fw->chan); mbox_free_channel(fw->chan);
return 0; return 0;