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i3c: mipi-i3c-hci-pci: Add Runtime PM support

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Enable Runtime PM for the mipi_i3c_hci_pci driver. Introduce helpers to
allow and forbid Runtime PM during probe and remove, using pm_runtime APIs.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260113072702.16268-22-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Adrian Hunter
2026-01-13 09:27:02 +02:00
committed by Alexandre Belloni
parent b9a15012a1
commit 95cb193516
1 changed files with 17 additions and 0 deletions
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17
drivers/i3c/master/mipi-i3c-hci/mipi-i3c-hci-pci.c
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@@ -18,6 +18,7 @@
#include <linux/platform_data/mipi-i3c-hci.h>
#include <linux/platform_device.h>
#include <linux/pm_qos.h>
#include <linux/pm_runtime.h>
/*
* There can up to 15 instances, but implementations have at most 2 at this
@@ -208,6 +209,18 @@ static const struct mipi_i3c_hci_pci_info intel_si_2_info = {
.instance_count = 1,
};
static void mipi_i3c_hci_pci_rpm_allow(struct device *dev)
{
pm_runtime_put(dev);
pm_runtime_allow(dev);
}
static void mipi_i3c_hci_pci_rpm_forbid(struct device *dev)
{
pm_runtime_forbid(dev);
pm_runtime_get_sync(dev);
}
struct mipi_i3c_hci_pci_cell_data {
struct mipi_i3c_hci_platform_data pdata;
struct resource res;
@@ -285,6 +298,8 @@ static int mipi_i3c_hci_pci_probe(struct pci_dev *pci,
pci_set_drvdata(pci, hci);
mipi_i3c_hci_pci_rpm_allow(&pci->dev);
return 0;
err_exit:
@@ -300,6 +315,8 @@ static void mipi_i3c_hci_pci_remove(struct pci_dev *pci)
if (hci->info->exit)
hci->info->exit(hci);
mipi_i3c_hci_pci_rpm_forbid(&pci->dev);
mfd_remove_devices(&pci->dev);
}