[PATCH V3 3/6] firmware: raspberrypi: Register hwmon driver
From: Stefan Wahren <hidden>
Date: 2018-05-25 19:27:03
Also in:
linux-arm-kernel, linux-hwmon
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- drivers/firmware/raspberrypi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 6692888f..0602626 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c@@ -21,6 +21,8 @@ #define MBOX_DATA28(msg) ((msg) & ~0xf) #define MBOX_CHAN_PROPERTY 8 +static struct platform_device *rpi_hwmon; + struct rpi_firmware { struct mbox_client cl; 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) { struct device *dev = &pdev->dev;
@@ -209,6 +225,7 @@ static int rpi_firmware_probe(struct platform_device *pdev) platform_set_drvdata(pdev, fw); rpi_firmware_print_firmware_revision(fw); + rpi_register_hwmon_driver(dev, fw); return 0; }
@@ -217,6 +234,8 @@ static int rpi_firmware_remove(struct platform_device *pdev) { struct rpi_firmware *fw = platform_get_drvdata(pdev); + platform_device_unregister(rpi_hwmon); + rpi_hwmon = NULL; mbox_free_channel(fw->chan); return 0;
--
2.7.4
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