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spi: dw-pci: Add runtime power management support

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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 1e69598325 ("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>
This commit is contained in:
Raymond Tan 2019-10-18 16:21:30 +03:00 committed by Mark Brown
parent 9c86f12a36
commit c8169580e9
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 9 additions and 0 deletions
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9
drivers/spi/spi-dw-pci.c
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@ -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);
}