diff options
| author | H. Peter Anvin | 2012-01-19 12:56:50 -0800 |
|---|---|---|
| committer | H. Peter Anvin | 2012-01-19 12:56:50 -0800 |
| commit | 282f445a779ed76fca9884fe377bf56a3088b208 (patch) | |
| tree | d9abcf526baee0100672851e0a8894c19e762a39 /arch/powerpc/sysdev/fsl_lbc.c | |
| parent | 68f30fbee19cc67849b9fa8e153ede70758afe81 (diff) | |
| parent | 90a4c0f51e8e44111a926be6f4c87af3938a79c3 (diff) | |
Merge remote-tracking branch 'linus/master' into x86/urgent
Diffstat (limited to 'arch/powerpc/sysdev/fsl_lbc.c')
| -rw-r--r-- | arch/powerpc/sysdev/fsl_lbc.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c index d5c3c90ee698..483126d7b3c0 100644 --- a/arch/powerpc/sysdev/fsl_lbc.c +++ b/arch/powerpc/sysdev/fsl_lbc.c @@ -332,6 +332,38 @@ err: return ret; } +#ifdef CONFIG_SUSPEND + +/* save lbc registers */ +static int fsl_lbc_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct fsl_lbc_ctrl *ctrl = dev_get_drvdata(&pdev->dev); + struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + + ctrl->saved_regs = kmalloc(sizeof(struct fsl_lbc_regs), GFP_KERNEL); + if (!ctrl->saved_regs) + return -ENOMEM; + + _memcpy_fromio(ctrl->saved_regs, lbc, sizeof(struct fsl_lbc_regs)); + return 0; +} + +/* restore lbc registers */ +static int fsl_lbc_resume(struct platform_device *pdev) +{ + struct fsl_lbc_ctrl *ctrl = dev_get_drvdata(&pdev->dev); + struct fsl_lbc_regs __iomem *lbc = ctrl->regs; + + if (ctrl->saved_regs) { + _memcpy_toio(lbc, ctrl->saved_regs, + sizeof(struct fsl_lbc_regs)); + kfree(ctrl->saved_regs); + ctrl->saved_regs = NULL; + } + return 0; +} +#endif /* CONFIG_SUSPEND */ + static const struct of_device_id fsl_lbc_match[] = { { .compatible = "fsl,elbc", }, { .compatible = "fsl,pq3-localbus", }, @@ -346,6 +378,10 @@ static struct platform_driver fsl_lbc_ctrl_driver = { .of_match_table = fsl_lbc_match, }, .probe = fsl_lbc_ctrl_probe, +#ifdef CONFIG_SUSPEND + .suspend = fsl_lbc_suspend, + .resume = fsl_lbc_resume, +#endif }; static int __init fsl_lbc_init(void) |