diff options
| author | Oded Gabbay <oded.gabbay@gmail.com> | 2019-02-16 00:39:19 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-18 09:46:45 +0100 |
| commit | d91389bc839d724cd8df7ca308dde97beca9b0c5 (patch) | |
| tree | c89375e38daba6d58acdeb99e6e9750e46412124 /drivers/misc/habanalabs/habanalabs_drv.c | |
| parent | 1251f23ae8583b1bb99c3db07102f4c9cc3160fe (diff) | |
| download | linux-d91389bc839d724cd8df7ca308dde97beca9b0c5.tar.bz2 | |
habanalabs: add sysfs and hwmon support
This patch add the sysfs and hwmon entries that are exposed by the driver.
Goya has several sensors, from various categories such as temperature,
voltage, current, etc. The driver exposes those sensors in the standard
hwmon mechanism.
In addition, the driver exposes a couple of interfaces in sysfs, both for
configuration and for providing status of the device or driver.
The configuration attributes is for Power Management:
- Automatic or manual
- Frequency value when moving to high frequency mode
- Maximum power the device is allowed to consume
The rest of the attributes are read-only and provide the following
information:
- Versions of the various firmwares running on the device
- Contents of the device's EEPROM
- The device type (currently only Goya is supported)
- PCI address of the device (to allow user-space to connect between
/dev/hlX to PCI address)
- Status of the device (operational, malfunction, in_reset)
- How many processes are open on the device's file
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/habanalabs/habanalabs_drv.c')
| -rw-r--r-- | drivers/misc/habanalabs/habanalabs_drv.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/habanalabs_drv.c b/drivers/misc/habanalabs/habanalabs_drv.c index 93576249307b..4f3d68395b98 100644 --- a/drivers/misc/habanalabs/habanalabs_drv.c +++ b/drivers/misc/habanalabs/habanalabs_drv.c @@ -127,6 +127,13 @@ int hl_device_open(struct inode *inode, struct file *filp) hpriv->taskpid = find_get_pid(current->pid); + /* + * Device is IDLE at this point so it is legal to change PLLs. There + * is no need to check anything because if the PLL is already HIGH, the + * set function will return without doing anything + */ + hl_device_set_frequency(hdev, PLL_HIGH); + return 0; out_err: |