diff options
Diffstat (limited to 'arch/arm/common')
| -rw-r--r-- | arch/arm/common/scoop.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c index d3a04c2a2c8..9e5245c702d 100644 --- a/arch/arm/common/scoop.c +++ b/arch/arm/common/scoop.c @@ -26,6 +26,8 @@ struct scoop_pcmcia_dev *scoop_devs; struct scoop_dev { void *base; spinlock_t scoop_lock; + unsigned short suspend_clr; + unsigned short suspend_set; u32 scoop_gpwr; }; @@ -90,14 +92,24 @@ EXPORT_SYMBOL(reset_scoop); EXPORT_SYMBOL(read_scoop_reg); EXPORT_SYMBOL(write_scoop_reg); +static void check_scoop_reg(struct scoop_dev *sdev) +{ + unsigned short mcr; + + mcr = SCOOP_REG(sdev->base, SCOOP_MCR); + if ((mcr & 0x100) == 0) + SCOOP_REG(sdev->base, SCOOP_MCR) = 0x0101; +} + #ifdef CONFIG_PM static int scoop_suspend(struct device *dev, pm_message_t state, uint32_t level) { if (level == SUSPEND_POWER_DOWN) { struct scoop_dev *sdev = dev_get_drvdata(dev); - sdev->scoop_gpwr = SCOOP_REG(sdev->base,SCOOP_GPWR); - SCOOP_REG(sdev->base,SCOOP_GPWR) = 0; + check_scoop_reg(sdev); + sdev->scoop_gpwr = SCOOP_REG(sdev->base, SCOOP_GPWR); + SCOOP_REG(sdev->base, SCOOP_GPWR) = (sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set; } return 0; } @@ -107,6 +119,7 @@ static int scoop_resume(struct device *dev, uint32_t level) if (level == RESUME_POWER_ON) { struct scoop_dev *sdev = dev_get_drvdata(dev); + check_scoop_reg(sdev); SCOOP_REG(sdev->base,SCOOP_GPWR) = sdev->scoop_gpwr; } return 0; @@ -151,6 +164,9 @@ int __init scoop_probe(struct device *dev) SCOOP_REG(devptr->base, SCOOP_GPCR) = inf->io_dir & 0xffff; SCOOP_REG(devptr->base, SCOOP_GPWR) = inf->io_out & 0xffff; + devptr->suspend_clr = inf->suspend_clr; + devptr->suspend_set = inf->suspend_set; + return 0; } |