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authorRaymond Tan <raymond.tan@intel.com>2019-10-18 16:21:30 +0300
committerMark Brown <broonie@kernel.org>2019-10-22 17:57:23 +0100
commitc8169580e924a1d2821e0a2e228c674e0eaa091f (patch)
tree17f6ee05aac396a9bd5b4d4c04e83ff8e3c4dbc4
parent9c86f12a36479dec06df3e4a4f31cecf8eba0222 (diff)
spi: dw-pci: Add runtime power management support
Implement pm_runtime hooks at pci driver. Signed-off-by: Raymond Tan <raymond.tan@intel.com> [jarkko.nikula@linux.intel.com: Forward ported on top of commit 1e6959832510 ("spi: dw: Add basic runtime PM support")] Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Link: https://lore.kernel.org/r/20191018132131.31608-2-jarkko.nikula@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--drivers/spi/spi-dw-pci.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
index 7ab53f4d04b9..1cddecea2715 100644
--- a/drivers/spi/spi-dw-pci.c
+++ b/drivers/spi/spi-dw-pci.c
@@ -7,6 +7,7 @@
#include <linux/interrupt.h>
#include <linux/pci.h>
+#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/module.h>
@@ -101,6 +102,11 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n",
pdev->vendor, pdev->device);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, 1000);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_put_autosuspend(&pdev->dev);
+ pm_runtime_allow(&pdev->dev);
+
return 0;
}
@@ -108,6 +114,9 @@ static void spi_pci_remove(struct pci_dev *pdev)
{
struct dw_spi *dws = pci_get_drvdata(pdev);
+ pm_runtime_forbid(&pdev->dev);
+ pm_runtime_get_noresume(&pdev->dev);
+
dw_spi_remove_host(dws);
pci_free_irq_vectors(pdev);
}