diff options
Diffstat (limited to 'arch/arm/common/locomo.c')
| -rw-r--r-- | arch/arm/common/locomo.c | 122 |
1 files changed, 108 insertions, 14 deletions
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c index 41f12658c8b4..ad55680726ed 100644 --- a/arch/arm/common/locomo.c +++ b/arch/arm/common/locomo.c @@ -22,12 +22,11 @@ #include <linux/delay.h> #include <linux/errno.h> #include <linux/ioport.h> -#include <linux/device.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <asm/hardware.h> -#include <asm/mach-types.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/mach/irq.h> @@ -177,7 +176,7 @@ static void locomo_handler(unsigned int irq, struct irqdesc *desc, d = irq_desc + irq; for (i = 0; i <= 3; i++, d++, irq++) { if (req & (0x0100 << i)) { - d->handle(irq, d, regs); + desc_handle_irq(irq, d, regs); } } @@ -220,7 +219,7 @@ static void locomo_key_handler(unsigned int irq, struct irqdesc *desc, if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) { d = irq_desc + LOCOMO_IRQ_KEY_START; - d->handle(LOCOMO_IRQ_KEY_START, d, regs); + desc_handle_irq(LOCOMO_IRQ_KEY_START, d, regs); } } @@ -273,7 +272,7 @@ static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc, d = irq_desc + LOCOMO_IRQ_GPIO_START; for (i = 0; i <= 15; i++, irq++, d++) { if (req & (0x0001 << i)) { - d->handle(irq, d, regs); + desc_handle_irq(irq, d, regs); } } } @@ -328,7 +327,7 @@ static void locomo_lt_handler(unsigned int irq, struct irqdesc *desc, if (locomo_readl(mapbase + LOCOMO_LTINT) & 0x0001) { d = irq_desc + LOCOMO_IRQ_LT_START; - d->handle(LOCOMO_IRQ_LT_START, d, regs); + desc_handle_irq(LOCOMO_IRQ_LT_START, d, regs); } } @@ -379,7 +378,7 @@ static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc, for (i = 0; i <= 3; i++, irq++, d++) { if (req & (0x0001 << i)) { - d->handle(irq, d, regs); + desc_handle_irq(irq, d, regs); } } } @@ -541,6 +540,97 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) return ret; } +#ifdef CONFIG_PM + +struct locomo_save_data { + u16 LCM_GPO; + u16 LCM_SPICT; + u16 LCM_GPE; + u16 LCM_ASD; + u16 LCM_SPIMD; +}; + +static int locomo_suspend(struct device *dev, pm_message_t state) +{ + struct locomo *lchip = dev_get_drvdata(dev); + struct locomo_save_data *save; + unsigned long flags; + + save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL); + if (!save) + return -ENOMEM; + + dev->power.saved_state = (void *) save; + + spin_lock_irqsave(&lchip->lock, flags); + + save->LCM_GPO = locomo_readl(lchip->base + LOCOMO_GPO); /* GPIO */ + locomo_writel(0x00, lchip->base + LOCOMO_GPO); + save->LCM_SPICT = locomo_readl(lchip->base + LOCOMO_SPICT); /* SPI */ + locomo_writel(0x40, lchip->base + LOCOMO_SPICT); + save->LCM_GPE = locomo_readl(lchip->base + LOCOMO_GPE); /* GPIO */ + locomo_writel(0x00, lchip->base + LOCOMO_GPE); + save->LCM_ASD = locomo_readl(lchip->base + LOCOMO_ASD); /* ADSTART */ + locomo_writel(0x00, lchip->base + LOCOMO_ASD); + save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPIMD); /* SPI */ + locomo_writel(0x3C14, lchip->base + LOCOMO_SPIMD); + + locomo_writel(0x00, lchip->base + LOCOMO_PAIF); + locomo_writel(0x00, lchip->base + LOCOMO_DAC); + locomo_writel(0x00, lchip->base + LOCOMO_BACKLIGHT + LOCOMO_TC); + + if ( (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88) ) + locomo_writel(0x00, lchip->base + LOCOMO_C32K); /* CLK32 off */ + else + /* 18MHz already enabled, so no wait */ + locomo_writel(0xc1, lchip->base + LOCOMO_C32K); /* CLK32 on */ + + locomo_writel(0x00, lchip->base + LOCOMO_TADC); /* 18MHz clock off*/ + locomo_writel(0x00, lchip->base + LOCOMO_AUDIO + LOCOMO_ACC); /* 22MHz/24MHz clock off */ + locomo_writel(0x00, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); /* FL */ + + spin_unlock_irqrestore(&lchip->lock, flags); + + return 0; +} + +static int locomo_resume(struct device *dev) +{ + struct locomo *lchip = dev_get_drvdata(dev); + struct locomo_save_data *save; + unsigned long r; + unsigned long flags; + + save = (struct locomo_save_data *) dev->power.saved_state; + if (!save) + return 0; + + spin_lock_irqsave(&lchip->lock, flags); + + locomo_writel(save->LCM_GPO, lchip->base + LOCOMO_GPO); + locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPICT); + locomo_writel(save->LCM_GPE, lchip->base + LOCOMO_GPE); + locomo_writel(save->LCM_ASD, lchip->base + LOCOMO_ASD); + locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPIMD); + + locomo_writel(0x00, lchip->base + LOCOMO_C32K); + locomo_writel(0x90, lchip->base + LOCOMO_TADC); + + locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KSC); + r = locomo_readl(lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); + r &= 0xFEFF; + locomo_writel(r, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); + locomo_writel(0x1, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KCMD); + + spin_unlock_irqrestore(&lchip->lock, flags); + + dev->power.saved_state = NULL; + kfree(save); + + return 0; +} +#endif + /** * locomo_probe - probe for a single LoCoMo chip. * @phys_addr: physical address of device. @@ -651,15 +741,15 @@ __locomo_probe(struct device *me, struct resource *mem, int irq) return ret; } -static void __locomo_remove(struct locomo *lchip) +static int locomo_remove_child(struct device *dev, void *data) { - struct list_head *l, *n; - - list_for_each_safe(l, n, &lchip->dev->children) { - struct device *d = list_to_dev(l); + device_unregister(dev); + return 0; +} - device_unregister(d); - } +static void __locomo_remove(struct locomo *lchip) +{ + device_for_each_child(lchip->dev, NULL, locomo_remove_child); if (lchip->irq != NO_IRQ) { set_irq_chained_handler(lchip->irq, NULL); @@ -707,6 +797,10 @@ static struct device_driver locomo_device_driver = { .bus = &platform_bus_type, .probe = locomo_probe, .remove = locomo_remove, +#ifdef CONFIG_PM + .suspend = locomo_suspend, + .resume = locomo_resume, +#endif }; /* |