spi: dw-pci: Add runtime power management support (c8169580) · Commits · 戴 / test

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 ("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>

drivers/spi/spi-dw-pci.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

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