diff options
| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-10-18 17:47:54 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-11-16 10:09:30 -0600 |
| commit | d278b098282d1327f6e1be82aacb18457a4d244d (patch) | |
| tree | f5330d8dcda06a3b51b8479954bf890bb4bea1f0 /drivers/thermal/Kconfig | |
| parent | de9a6c8d5dbfedb5eb3722c822da0490f6a59a45 (diff) | |
thermal: Add PCIe cooling driver
Add a thermal cooling driver to provide path to access PCIe bandwidth
controller using the usual thermal interfaces.
A cooling device is instantiated for controllable PCIe Ports from the
bwctrl service driver.
If registering the cooling device fails, allow bwctrl's probe to succeed
regardless. As cdev in that case contains IS_ERR() pseudo "pointer", clean
that up inside the probe function so the remove side doesn't need to
suddenly make an odd looking IS_ERR() check.
The thermal side state 0 means no throttling, i.e., maximum supported PCIe
Link Speed.
Link: https://lore.kernel.org/r/20241018144755.7875-9-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
[bhelgaas: dropped data->cdev test per
https://lore.kernel.org/r/ZzRm1SJTwEMRsAr8@wunner.de]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Rafael J. Wysocki <rafael@kernel.org> # From the cooling device interface perspective
Diffstat (limited to 'drivers/thermal/Kconfig')
| -rw-r--r-- | drivers/thermal/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 61e7ae524b1f..d3f9686e26e7 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -220,6 +220,15 @@ config DEVFREQ_THERMAL If you want this support, you should say Y here. +config PCIE_THERMAL + bool "PCIe cooling support" + depends on PCIEPORTBUS + help + This implements PCIe cooling mechanism through bandwidth reduction + for PCIe devices. + + If you want this support, you should say Y here. + config THERMAL_EMULATION bool "Thermal emulation mode support" help |