diff options
| -rw-r--r-- | arch/powerpc/include/asm/fsl_lbc.h | 7 | ||||
| -rw-r--r-- | arch/powerpc/sysdev/fsl_lbc.c | 36 |
2 files changed, 41 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/fsl_lbc.h b/arch/powerpc/include/asm/fsl_lbc.h index 8a0b5ece8f7..420b45368fc 100644 --- a/arch/powerpc/include/asm/fsl_lbc.h +++ b/arch/powerpc/include/asm/fsl_lbc.h @@ -238,8 +238,6 @@ struct fsl_lbc_regs { #define FPAR_LP_CI_SHIFT 0 __be32 fbcr; /**< Flash Byte Count Register */ #define FBCR_BC 0x00000FFF - u8 res11[0x8]; - u8 res8[0xF00]; }; /* @@ -294,6 +292,11 @@ struct fsl_lbc_ctrl { /* status read from LTESR by irq handler */ unsigned int irq_status; + +#ifdef CONFIG_SUSPEND + /* save regs when system go to deep-sleep */ + struct fsl_lbc_regs *saved_regs; +#endif }; extern int fsl_upm_run_pattern(struct fsl_upm *upm, void __iomem *io_base, diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c index d5c3c90ee69..483126d7b3c 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) |