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usb: dwc2: Backup and restore PCGCCTL1 register

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Backup PCGCCTL1 register when entering hibernation mode and
restore it after exiting from hibernation, to keep active ACG
feature.

Signed-off-by: Razmik Karapetyan <razmik@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Razmik Karapetyan 2018-01-24 17:40:56 +04:00 committed by Felipe Balbi
parent 66e77a24a8
commit 600a490e18
2 changed files with 3 additions and 0 deletions
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2
drivers/usb/dwc2/core.c
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@ -80,6 +80,7 @@ static int dwc2_backup_global_registers(struct dwc2_hsotg *hsotg)
gr->gnptxfsiz = dwc2_readl(hsotg->regs + GNPTXFSIZ);
gr->hptxfsiz = dwc2_readl(hsotg->regs + HPTXFSIZ);
gr->gdfifocfg = dwc2_readl(hsotg->regs + GDFIFOCFG);
gr->pcgcctl1 = dwc2_readl(hsotg->regs + PCGCCTL1);
for (i = 0; i < MAX_EPS_CHANNELS; i++)
gr->dtxfsiz[i] = dwc2_readl(hsotg->regs + DPTXFSIZN(i));
@ -119,6 +120,7 @@ static int dwc2_restore_global_registers(struct dwc2_hsotg *hsotg)
dwc2_writel(gr->gnptxfsiz, hsotg->regs + GNPTXFSIZ);
dwc2_writel(gr->hptxfsiz, hsotg->regs + HPTXFSIZ);
dwc2_writel(gr->gdfifocfg, hsotg->regs + GDFIFOCFG);
dwc2_writel(gr->pcgcctl1, hsotg->regs + PCGCCTL1);
for (i = 0; i < MAX_EPS_CHANNELS; i++)
dwc2_writel(gr->dtxfsiz[i], hsotg->regs + DPTXFSIZN(i));

1
drivers/usb/dwc2/core.h
View File

@ -628,6 +628,7 @@ struct dwc2_gregs_backup {
u32 gi2cctl;
u32 hptxfsiz;
u32 pcgcctl;
u32 pcgcctl1;
u32 gdfifocfg;
u32 dtxfsiz[MAX_EPS_CHANNELS];
u32 gpwrdn;