| Message ID | 1435921425-15121-4-git-send-email-kishon@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
Hi Kishon, On 07/03/2015 02:03 PM, Kishon Vijay Abraham I wrote: > Add PM support to pci-dra7xx so that PCI clocks can be disabled > during suspend and enabled back during resume without affecting > PCI functionality. > > Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> > --- > drivers/pci/host/pci-dra7xx.c | 74 +++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 74 insertions(+) > > diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c > index d8b6d66..1f5c039 100644 > --- a/drivers/pci/host/pci-dra7xx.c > +++ b/drivers/pci/host/pci-dra7xx.c > @@ -433,6 +433,79 @@ static int __exit dra7xx_pcie_remove(struct platform_device *pdev) > return 0; > } > > +#ifdef CONFIG_PM_SLEEP [...] > + > +static const struct dev_pm_ops dra7xx_pcie_pm_ops = { > + .suspend_noirq = dra7xx_pcie_suspend_noirq, > + .suspend = dra7xx_pcie_suspend, > + .resume_noirq = dra7xx_pcie_resume_noirq, > + .resume = dra7xx_pcie_resume, Could you use here SET_SYSTEM_SLEEP_PM_OPS() and SET_NOIRQ_SYSTEM_SLEEP_PM_OPS() macro, pls? > +}; > +#define DEV_PM_OPS (&dra7xx_pcie_pm_ops) > +#else > +#define DEV_PM_OPS NULL > +#endif > + > static const struct of_device_id of_dra7xx_pcie_match[] = { > { .compatible = "ti,dra7-pcie", }, > {}, > @@ -444,6 +517,7 @@ static struct platform_driver dra7xx_pcie_driver = { > .driver = { > .name = "dra7-pcie", > .of_match_table = of_dra7xx_pcie_match, > + .pm = DEV_PM_OPS, > }, > }; > >
Hi, On Friday 03 July 2015 05:34 PM, Grygorii Strashko wrote: > Hi Kishon, > > On 07/03/2015 02:03 PM, Kishon Vijay Abraham I wrote: >> Add PM support to pci-dra7xx so that PCI clocks can be disabled >> during suspend and enabled back during resume without affecting >> PCI functionality. >> >> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> >> --- >> drivers/pci/host/pci-dra7xx.c | 74 +++++++++++++++++++++++++++++++++++++++++ >> 1 file changed, 74 insertions(+) >> >> diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c >> index d8b6d66..1f5c039 100644 >> --- a/drivers/pci/host/pci-dra7xx.c >> +++ b/drivers/pci/host/pci-dra7xx.c >> @@ -433,6 +433,79 @@ static int __exit dra7xx_pcie_remove(struct platform_device *pdev) >> return 0; >> } >> >> +#ifdef CONFIG_PM_SLEEP > > [...] > >> + >> +static const struct dev_pm_ops dra7xx_pcie_pm_ops = { >> + .suspend_noirq = dra7xx_pcie_suspend_noirq, >> + .suspend = dra7xx_pcie_suspend, >> + .resume_noirq = dra7xx_pcie_resume_noirq, >> + .resume = dra7xx_pcie_resume, > > Could you use here SET_SYSTEM_SLEEP_PM_OPS() > and SET_NOIRQ_SYSTEM_SLEEP_PM_OPS() macro, pls? sure! Thanks Kishon -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci-dra7xx.c index d8b6d66..1f5c039 100644 --- a/drivers/pci/host/pci-dra7xx.c +++ b/drivers/pci/host/pci-dra7xx.c @@ -433,6 +433,79 @@ static int __exit dra7xx_pcie_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int dra7xx_pcie_suspend(struct device *dev) +{ + struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev); + struct pcie_port *pp = &dra7xx->pp; + + dw_pcie_suspend_rc(pp); + + return 0; +} + +static int dra7xx_pcie_resume(struct device *dev) +{ + struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev); + struct pcie_port *pp = &dra7xx->pp; + + dw_pcie_resume_rc(pp); + + return 0; +} +static int dra7xx_pcie_suspend_noirq(struct device *dev) +{ + struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev); + int count = dra7xx->phy_count; + + while (count--) { + phy_power_off(dra7xx->phy[count]); + phy_exit(dra7xx->phy[count]); + } + + return 0; +} +static int dra7xx_pcie_resume_noirq(struct device *dev) +{ + struct dra7xx_pcie *dra7xx = dev_get_drvdata(dev); + int phy_count = dra7xx->phy_count; + int ret; + int i; + + for (i = 0; i < phy_count; i++) { + ret = phy_init(dra7xx->phy[i]); + if (ret < 0) + goto err_phy; + + ret = phy_power_on(dra7xx->phy[i]); + if (ret < 0) { + phy_exit(dra7xx->phy[i]); + goto err_phy; + } + } + + return 0; + +err_phy: + while (--i >= 0) { + phy_power_off(dra7xx->phy[i]); + phy_exit(dra7xx->phy[i]); + } + + return ret; +} + +static const struct dev_pm_ops dra7xx_pcie_pm_ops = { + .suspend_noirq = dra7xx_pcie_suspend_noirq, + .suspend = dra7xx_pcie_suspend, + .resume_noirq = dra7xx_pcie_resume_noirq, + .resume = dra7xx_pcie_resume, +}; +#define DEV_PM_OPS (&dra7xx_pcie_pm_ops) +#else +#define DEV_PM_OPS NULL +#endif + static const struct of_device_id of_dra7xx_pcie_match[] = { { .compatible = "ti,dra7-pcie", }, {}, @@ -444,6 +517,7 @@ static struct platform_driver dra7xx_pcie_driver = { .driver = { .name = "dra7-pcie", .of_match_table = of_dra7xx_pcie_match, + .pm = DEV_PM_OPS, }, };
Add PM support to pci-dra7xx so that PCI clocks can be disabled during suspend and enabled back during resume without affecting PCI functionality. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- drivers/pci/host/pci-dra7xx.c | 74 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+)