diff options
Diffstat (limited to 'arch/arm/common/locomo.c')
| -rw-r--r-- | arch/arm/common/locomo.c | 516 |
1 files changed, 140 insertions, 376 deletions
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c index 159ad7ed7a4..b55c3625d7e 100644 --- a/arch/arm/common/locomo.c +++ b/arch/arm/common/locomo.c @@ -15,7 +15,6 @@ * Based on sa1111.c */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> @@ -25,14 +24,20 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/spinlock.h> +#include <linux/io.h> -#include <asm/hardware.h> -#include <asm/io.h> +#include <mach/hardware.h> #include <asm/irq.h> #include <asm/mach/irq.h> #include <asm/hardware/locomo.h> +/* LoCoMo Interrupts */ +#define IRQ_LOCOMO_KEY (0) +#define IRQ_LOCOMO_GPIO (1) +#define IRQ_LOCOMO_LT (2) +#define IRQ_LOCOMO_SPI (3) + /* M62332 output channel selection */ #define M62332_EVR_CH 1 /* M62332 volume channel number */ /* 0 : CH.1 , 1 : CH. 2 */ @@ -59,8 +64,12 @@ struct locomo { struct device *dev; unsigned long phys; unsigned int irq; + int irq_base; spinlock_t lock; - void *base; + void __iomem *base; +#ifdef CONFIG_PM + void *saved_state; +#endif }; struct locomo_dev_info { @@ -79,9 +88,7 @@ struct locomo_dev_info { static struct locomo_dev_info locomo_devices[] = { { .devid = LOCOMO_DEVID_KEYBOARD, - .irq = { - IRQ_LOCOMO_KEY, - }, + .irq = { IRQ_LOCOMO_KEY }, .name = "locomo-keyboard", .offset = LOCOMO_KEYBOARD, .length = 16, @@ -122,367 +129,82 @@ static struct locomo_dev_info locomo_devices[] = { .offset = 0, .length = 0, }, + { + .devid = LOCOMO_DEVID_SPI, + .irq = {}, + .name = "locomo-spi", + .offset = LOCOMO_SPI, + .length = 0x30, + }, }; - -/** LoCoMo interrupt handling stuff. - * NOTE: LoCoMo has a 1 to many mapping on all of its IRQs. - * that is, there is only one real hardware interrupt - * we determine which interrupt it is by reading some IO memory. - * We have two levels of expansion, first in the handler for the - * hardware interrupt we generate an interrupt - * IRQ_LOCOMO_*_BASE and those handlers generate more interrupts - * - * hardware irq reads LOCOMO_ICR & 0x0f00 - * IRQ_LOCOMO_KEY_BASE - * IRQ_LOCOMO_GPIO_BASE - * IRQ_LOCOMO_LT_BASE - * IRQ_LOCOMO_SPI_BASE - * IRQ_LOCOMO_KEY_BASE reads LOCOMO_KIC & 0x0001 - * IRQ_LOCOMO_KEY - * IRQ_LOCOMO_GPIO_BASE reads LOCOMO_GIR & LOCOMO_GPD & 0xffff - * IRQ_LOCOMO_GPIO[0-15] - * IRQ_LOCOMO_LT_BASE reads LOCOMO_LTINT & 0x0001 - * IRQ_LOCOMO_LT - * IRQ_LOCOMO_SPI_BASE reads LOCOMO_SPIIR & 0x000F - * IRQ_LOCOMO_SPI_RFR - * IRQ_LOCOMO_SPI_RFW - * IRQ_LOCOMO_SPI_OVRN - * IRQ_LOCOMO_SPI_TEND - */ - -#define LOCOMO_IRQ_START (IRQ_LOCOMO_KEY_BASE) -#define LOCOMO_IRQ_KEY_START (IRQ_LOCOMO_KEY) -#define LOCOMO_IRQ_GPIO_START (IRQ_LOCOMO_GPIO0) -#define LOCOMO_IRQ_LT_START (IRQ_LOCOMO_LT) -#define LOCOMO_IRQ_SPI_START (IRQ_LOCOMO_SPI_RFR) - -static void locomo_handler(unsigned int irq, struct irqdesc *desc, - struct pt_regs *regs) +static void locomo_handler(unsigned int irq, struct irq_desc *desc) { + struct locomo *lchip = irq_get_chip_data(irq); int req, i; - struct irqdesc *d; - void *mapbase = get_irq_chipdata(irq); /* Acknowledge the parent IRQ */ - desc->chip->ack(irq); + desc->irq_data.chip->irq_ack(&desc->irq_data); /* check why this interrupt was generated */ - req = locomo_readl(mapbase + LOCOMO_ICR) & 0x0f00; + req = locomo_readl(lchip->base + LOCOMO_ICR) & 0x0f00; if (req) { /* generate the next interrupt(s) */ - irq = LOCOMO_IRQ_START; - d = irq_desc + irq; - for (i = 0; i <= 3; i++, d++, irq++) { + irq = lchip->irq_base; + for (i = 0; i <= 3; i++, irq++) { if (req & (0x0100 << i)) { - desc_handle_irq(irq, d, regs); + generic_handle_irq(irq); } } } } -static void locomo_ack_irq(unsigned int irq) -{ -} - -static void locomo_mask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_ICR); - r &= ~(0x0010 << (irq - LOCOMO_IRQ_START)); - locomo_writel(r, mapbase + LOCOMO_ICR); -} - -static void locomo_unmask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_ICR); - r |= (0x0010 << (irq - LOCOMO_IRQ_START)); - locomo_writel(r, mapbase + LOCOMO_ICR); -} - -static struct irqchip locomo_chip = { - .ack = locomo_ack_irq, - .mask = locomo_mask_irq, - .unmask = locomo_unmask_irq, -}; - -static void locomo_key_handler(unsigned int irq, struct irqdesc *desc, - struct pt_regs *regs) -{ - struct irqdesc *d; - void *mapbase = get_irq_chipdata(irq); - - if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) { - d = irq_desc + LOCOMO_IRQ_KEY_START; - desc_handle_irq(LOCOMO_IRQ_KEY_START, d, regs); - } -} - -static void locomo_key_ack_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); - r &= ~(0x0100 << (irq - LOCOMO_IRQ_KEY_START)); - locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); -} - -static void locomo_key_mask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); - r &= ~(0x0010 << (irq - LOCOMO_IRQ_KEY_START)); - locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); -} - -static void locomo_key_unmask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); - r |= (0x0010 << (irq - LOCOMO_IRQ_KEY_START)); - locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); -} - -static struct irqchip locomo_key_chip = { - .ack = locomo_key_ack_irq, - .mask = locomo_key_mask_irq, - .unmask = locomo_key_unmask_irq, -}; - -static void locomo_gpio_handler(unsigned int irq, struct irqdesc *desc, - struct pt_regs *regs) -{ - int req, i; - struct irqdesc *d; - void *mapbase = get_irq_chipdata(irq); - - req = locomo_readl(mapbase + LOCOMO_GIR) & - locomo_readl(mapbase + LOCOMO_GPD) & - 0xffff; - - if (req) { - irq = LOCOMO_IRQ_GPIO_START; - d = irq_desc + LOCOMO_IRQ_GPIO_START; - for (i = 0; i <= 15; i++, irq++, d++) { - if (req & (0x0001 << i)) { - desc_handle_irq(irq, d, regs); - } - } - } -} - -static void locomo_gpio_ack_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_GWE); - r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); - locomo_writel(r, mapbase + LOCOMO_GWE); - - r = locomo_readl(mapbase + LOCOMO_GIS); - r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); - locomo_writel(r, mapbase + LOCOMO_GIS); - - r = locomo_readl(mapbase + LOCOMO_GWE); - r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); - locomo_writel(r, mapbase + LOCOMO_GWE); -} - -static void locomo_gpio_mask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_GIE); - r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); - locomo_writel(r, mapbase + LOCOMO_GIE); -} - -static void locomo_gpio_unmask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_GIE); - r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); - locomo_writel(r, mapbase + LOCOMO_GIE); -} - -static struct irqchip locomo_gpio_chip = { - .ack = locomo_gpio_ack_irq, - .mask = locomo_gpio_mask_irq, - .unmask = locomo_gpio_unmask_irq, -}; - -static void locomo_lt_handler(unsigned int irq, struct irqdesc *desc, - struct pt_regs *regs) -{ - struct irqdesc *d; - void *mapbase = get_irq_chipdata(irq); - - if (locomo_readl(mapbase + LOCOMO_LTINT) & 0x0001) { - d = irq_desc + LOCOMO_IRQ_LT_START; - desc_handle_irq(LOCOMO_IRQ_LT_START, d, regs); - } -} - -static void locomo_lt_ack_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_LTINT); - r &= ~(0x0100 << (irq - LOCOMO_IRQ_LT_START)); - locomo_writel(r, mapbase + LOCOMO_LTINT); -} - -static void locomo_lt_mask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_LTINT); - r &= ~(0x0010 << (irq - LOCOMO_IRQ_LT_START)); - locomo_writel(r, mapbase + LOCOMO_LTINT); -} - -static void locomo_lt_unmask_irq(unsigned int irq) -{ - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_LTINT); - r |= (0x0010 << (irq - LOCOMO_IRQ_LT_START)); - locomo_writel(r, mapbase + LOCOMO_LTINT); -} - -static struct irqchip locomo_lt_chip = { - .ack = locomo_lt_ack_irq, - .mask = locomo_lt_mask_irq, - .unmask = locomo_lt_unmask_irq, -}; - -static void locomo_spi_handler(unsigned int irq, struct irqdesc *desc, - struct pt_regs *regs) -{ - int req, i; - struct irqdesc *d; - void *mapbase = get_irq_chipdata(irq); - - req = locomo_readl(mapbase + LOCOMO_SPIIR) & 0x000F; - if (req) { - irq = LOCOMO_IRQ_SPI_START; - d = irq_desc + irq; - - for (i = 0; i <= 3; i++, irq++, d++) { - if (req & (0x0001 << i)) { - desc_handle_irq(irq, d, regs); - } - } - } -} - -static void locomo_spi_ack_irq(unsigned int irq) +static void locomo_ack_irq(struct irq_data *d) { - void *mapbase = get_irq_chipdata(irq); - unsigned int r; - r = locomo_readl(mapbase + LOCOMO_SPIWE); - r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START)); - locomo_writel(r, mapbase + LOCOMO_SPIWE); - - r = locomo_readl(mapbase + LOCOMO_SPIIS); - r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); - locomo_writel(r, mapbase + LOCOMO_SPIIS); - - r = locomo_readl(mapbase + LOCOMO_SPIWE); - r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); - locomo_writel(r, mapbase + LOCOMO_SPIWE); } -static void locomo_spi_mask_irq(unsigned int irq) +static void locomo_mask_irq(struct irq_data *d) { - void *mapbase = get_irq_chipdata(irq); + struct locomo *lchip = irq_data_get_irq_chip_data(d); unsigned int r; - r = locomo_readl(mapbase + LOCOMO_SPIIE); - r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); - locomo_writel(r, mapbase + LOCOMO_SPIIE); + r = locomo_readl(lchip->base + LOCOMO_ICR); + r &= ~(0x0010 << (d->irq - lchip->irq_base)); + locomo_writel(r, lchip->base + LOCOMO_ICR); } -static void locomo_spi_unmask_irq(unsigned int irq) +static void locomo_unmask_irq(struct irq_data *d) { - void *mapbase = get_irq_chipdata(irq); + struct locomo *lchip = irq_data_get_irq_chip_data(d); unsigned int r; - r = locomo_readl(mapbase + LOCOMO_SPIIE); - r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START)); - locomo_writel(r, mapbase + LOCOMO_SPIIE); + r = locomo_readl(lchip->base + LOCOMO_ICR); + r |= (0x0010 << (d->irq - lchip->irq_base)); + locomo_writel(r, lchip->base + LOCOMO_ICR); } -static struct irqchip locomo_spi_chip = { - .ack = locomo_spi_ack_irq, - .mask = locomo_spi_mask_irq, - .unmask = locomo_spi_unmask_irq, +static struct irq_chip locomo_chip = { + .name = "LOCOMO", + .irq_ack = locomo_ack_irq, + .irq_mask = locomo_mask_irq, + .irq_unmask = locomo_unmask_irq, }; static void locomo_setup_irq(struct locomo *lchip) { - int irq; - void *irqbase = lchip->base; + int irq = lchip->irq_base; /* * Install handler for IRQ_LOCOMO_HW. */ - set_irq_type(lchip->irq, IRQT_FALLING); - set_irq_chipdata(lchip->irq, irqbase); - set_irq_chained_handler(lchip->irq, locomo_handler); - - /* Install handlers for IRQ_LOCOMO_*_BASE */ - set_irq_chip(IRQ_LOCOMO_KEY_BASE, &locomo_chip); - set_irq_chipdata(IRQ_LOCOMO_KEY_BASE, irqbase); - set_irq_chained_handler(IRQ_LOCOMO_KEY_BASE, locomo_key_handler); - set_irq_flags(IRQ_LOCOMO_KEY_BASE, IRQF_VALID | IRQF_PROBE); - - set_irq_chip(IRQ_LOCOMO_GPIO_BASE, &locomo_chip); - set_irq_chipdata(IRQ_LOCOMO_GPIO_BASE, irqbase); - set_irq_chained_handler(IRQ_LOCOMO_GPIO_BASE, locomo_gpio_handler); - set_irq_flags(IRQ_LOCOMO_GPIO_BASE, IRQF_VALID | IRQF_PROBE); - - set_irq_chip(IRQ_LOCOMO_LT_BASE, &locomo_chip); - set_irq_chipdata(IRQ_LOCOMO_LT_BASE, irqbase); - set_irq_chained_handler(IRQ_LOCOMO_LT_BASE, locomo_lt_handler); - set_irq_flags(IRQ_LOCOMO_LT_BASE, IRQF_VALID | IRQF_PROBE); - - set_irq_chip(IRQ_LOCOMO_SPI_BASE, &locomo_chip); - set_irq_chipdata(IRQ_LOCOMO_SPI_BASE, irqbase); - set_irq_chained_handler(IRQ_LOCOMO_SPI_BASE, locomo_spi_handler); - set_irq_flags(IRQ_LOCOMO_SPI_BASE, IRQF_VALID | IRQF_PROBE); - - /* install handlers for IRQ_LOCOMO_KEY_BASE generated interrupts */ - set_irq_chip(LOCOMO_IRQ_KEY_START, &locomo_key_chip); - set_irq_chipdata(LOCOMO_IRQ_KEY_START, irqbase); - set_irq_handler(LOCOMO_IRQ_KEY_START, do_edge_IRQ); - set_irq_flags(LOCOMO_IRQ_KEY_START, IRQF_VALID | IRQF_PROBE); - - /* install handlers for IRQ_LOCOMO_GPIO_BASE generated interrupts */ - for (irq = LOCOMO_IRQ_GPIO_START; irq < LOCOMO_IRQ_GPIO_START + 16; irq++) { - set_irq_chip(irq, &locomo_gpio_chip); - set_irq_chipdata(irq, irqbase); - set_irq_handler(irq, do_edge_IRQ); - set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); - } - - /* install handlers for IRQ_LOCOMO_LT_BASE generated interrupts */ - set_irq_chip(LOCOMO_IRQ_LT_START, &locomo_lt_chip); - set_irq_chipdata(LOCOMO_IRQ_LT_START, irqbase); - set_irq_handler(LOCOMO_IRQ_LT_START, do_edge_IRQ); - set_irq_flags(LOCOMO_IRQ_LT_START, IRQF_VALID | IRQF_PROBE); - - /* install handlers for IRQ_LOCOMO_SPI_BASE generated interrupts */ - for (irq = LOCOMO_IRQ_SPI_START; irq < LOCOMO_IRQ_SPI_START + 3; irq++) { - set_irq_chip(irq, &locomo_spi_chip); - set_irq_chipdata(irq, irqbase); - set_irq_handler(irq, do_edge_IRQ); + irq_set_irq_type(lchip->irq, IRQ_TYPE_EDGE_FALLING); + irq_set_chip_data(lchip->irq, lchip); + irq_set_chained_handler(lchip->irq, locomo_handler); + + /* Install handlers for IRQ_LOCOMO_* */ + for ( ; irq <= lchip->irq_base + 3; irq++) { + irq_set_chip_and_handler(irq, &locomo_chip, handle_level_irq); + irq_set_chip_data(irq, lchip); set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); } } @@ -501,14 +223,12 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) struct locomo_dev *dev; int ret; - dev = kmalloc(sizeof(struct locomo_dev), GFP_KERNEL); + dev = kzalloc(sizeof(struct locomo_dev), GFP_KERNEL); if (!dev) { ret = -ENOMEM; goto out; } - memset(dev, 0, sizeof(struct locomo_dev)); - strncpy(dev->dev.bus_id,info->name,sizeof(dev->dev.bus_id)); /* * If the parent device has a DMA mask associated with it, * propagate it down to the children. @@ -518,6 +238,7 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) dev->dev.dma_mask = &dev->dma_mask; } + dev_set_name(&dev->dev, "%s", info->name); dev->devid = info->devid; dev->dev.parent = lchip->dev; dev->dev.bus = &locomo_bus_type; @@ -530,7 +251,8 @@ locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) dev->mapbase = 0; dev->length = info->length; - memmove(dev->irq, info->irq, sizeof(dev->irq)); + dev->irq[0] = (lchip->irq_base == NO_IRQ) ? + NO_IRQ : lchip->irq_base + info->irq[0]; ret = device_register(&dev->dev); if (ret) { @@ -560,26 +282,26 @@ static int locomo_suspend(struct platform_device *dev, pm_message_t state) if (!save) return -ENOMEM; - dev->dev.power.saved_state = (void *) save; + lchip->saved_state = 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_SPICT = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPICT); /* SPI */ + locomo_writel(0x40, lchip->base + LOCOMO_SPI + 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); + save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPIMD); /* SPI */ + locomo_writel(0x3C14, lchip->base + LOCOMO_SPI + 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) ) + 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 */ @@ -600,18 +322,18 @@ static int locomo_resume(struct platform_device *dev) struct locomo_save_data *save; unsigned long r; unsigned long flags; - - save = (struct locomo_save_data *) dev->dev.power.saved_state; + + save = lchip->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_SPICT, lchip->base + LOCOMO_SPI + 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(save->LCM_SPIMD, lchip->base + LOCOMO_SPI + LOCOMO_SPIMD); locomo_writel(0x00, lchip->base + LOCOMO_C32K); locomo_writel(0x90, lchip->base + LOCOMO_TADC); @@ -623,12 +345,15 @@ static int locomo_resume(struct platform_device *dev) locomo_writel(0x1, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KCMD); spin_unlock_irqrestore(&lchip->lock, flags); + + lchip->saved_state = NULL; kfree(save); return 0; } #endif + /** * locomo_probe - probe for a single LoCoMo chip. * @phys_addr: physical address of device. @@ -644,16 +369,15 @@ static int locomo_resume(struct platform_device *dev) static int __locomo_probe(struct device *me, struct resource *mem, int irq) { + struct locomo_platform_data *pdata = me->platform_data; struct locomo *lchip; unsigned long r; int i, ret = -ENODEV; - lchip = kmalloc(sizeof(struct locomo), GFP_KERNEL); + lchip = kzalloc(sizeof(struct locomo), GFP_KERNEL); if (!lchip) return -ENOMEM; - memset(lchip, 0, sizeof(struct locomo)); - spin_lock_init(&lchip->lock); lchip->dev = me; @@ -661,6 +385,7 @@ __locomo_probe(struct device *me, struct resource *mem, int irq) lchip->phys = mem->start; lchip->irq = irq; + lchip->irq_base = (pdata) ? pdata->irq_base : NO_IRQ; /* * Map the whole region. This also maps the @@ -679,19 +404,20 @@ __locomo_probe(struct device *me, struct resource *mem, int irq) /* GPIO */ locomo_writel(0, lchip->base + LOCOMO_GPO); - locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) + locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) , lchip->base + LOCOMO_GPE); - locomo_writel( (LOCOMO_GPIO(2) | LOCOMO_GPIO(3) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) + locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) , lchip->base + LOCOMO_GPD); locomo_writel(0, lchip->base + LOCOMO_GIE); - /* FrontLight */ + /* Frontlight */ locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); + /* Longtime timer */ locomo_writel(0, lchip->base + LOCOMO_LTINT); /* SPI */ - locomo_writel(0, lchip->base + LOCOMO_SPIIE); + locomo_writel(0, lchip->base + LOCOMO_SPI + LOCOMO_SPIIE); locomo_writel(6 + 8 + 320 + 30 - 10, lchip->base + LOCOMO_ASD); r = locomo_readl(lchip->base + LOCOMO_ASD); @@ -726,12 +452,11 @@ __locomo_probe(struct device *me, struct resource *mem, int irq) * The interrupt controller must be initialised before any * other device to ensure that the interrupts are available. */ - if (lchip->irq != NO_IRQ) + if (lchip->irq != NO_IRQ && lchip->irq_base != NO_IRQ) locomo_setup_irq(lchip); for (i = 0; i < ARRAY_SIZE(locomo_devices); i++) locomo_init_one_child(lchip, &locomo_devices[i]); - return 0; out: @@ -750,8 +475,8 @@ 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); - set_irq_data(lchip->irq, NULL); + irq_set_chained_handler(lchip->irq, NULL); + irq_set_handler_data(lchip->irq, NULL); } iounmap(lchip->base); @@ -767,6 +492,8 @@ static int locomo_probe(struct platform_device *dev) if (!mem) return -EINVAL; irq = platform_get_irq(dev, 0); + if (irq < 0) + return -ENXIO; return __locomo_probe(&dev->dev, mem, irq); } @@ -810,16 +537,22 @@ static inline struct locomo *locomo_chip_driver(struct locomo_dev *ldev) return (struct locomo *)dev_get_drvdata(ldev->dev.parent); } -void locomo_gpio_set_dir(struct locomo_dev *ldev, unsigned int bits, unsigned int dir) +void locomo_gpio_set_dir(struct device *dev, unsigned int bits, unsigned int dir) { - struct locomo *lchip = locomo_chip_driver(ldev); + struct locomo *lchip = dev_get_drvdata(dev); unsigned long flags; unsigned int r; + if (!lchip) + return; + spin_lock_irqsave(&lchip->lock, flags); r = locomo_readl(lchip->base + LOCOMO_GPD); - r &= ~bits; + if (dir) + r |= bits; + else + r &= ~bits; locomo_writel(r, lchip->base + LOCOMO_GPD); r = locomo_readl(lchip->base + LOCOMO_GPE); @@ -831,13 +564,17 @@ void locomo_gpio_set_dir(struct locomo_dev *ldev, unsigned int bits, unsigned in spin_unlock_irqrestore(&lchip->lock, flags); } +EXPORT_SYMBOL(locomo_gpio_set_dir); -unsigned int locomo_gpio_read_level(struct locomo_dev *ldev, unsigned int bits) +int locomo_gpio_read_level(struct device *dev, unsigned int bits) { - struct locomo *lchip = locomo_chip_driver(ldev); + struct locomo *lchip = dev_get_drvdata(dev); unsigned long flags; unsigned int ret; + if (!lchip) + return -ENODEV; + spin_lock_irqsave(&lchip->lock, flags); ret = locomo_readl(lchip->base + LOCOMO_GPL); spin_unlock_irqrestore(&lchip->lock, flags); @@ -845,13 +582,17 @@ unsigned int locomo_gpio_read_level(struct locomo_dev *ldev, unsigned int bits) ret &= bits; return ret; } +EXPORT_SYMBOL(locomo_gpio_read_level); -unsigned int locomo_gpio_read_output(struct locomo_dev *ldev, unsigned int bits) +int locomo_gpio_read_output(struct device *dev, unsigned int bits) { - struct locomo *lchip = locomo_chip_driver(ldev); + struct locomo *lchip = dev_get_drvdata(dev); unsigned long flags; unsigned int ret; + if (!lchip) + return -ENODEV; + spin_lock_irqsave(&lchip->lock, flags); ret = locomo_readl(lchip->base + LOCOMO_GPO); spin_unlock_irqrestore(&lchip->lock, flags); @@ -859,13 +600,17 @@ unsigned int locomo_gpio_read_output(struct locomo_dev *ldev, unsigned int bits) ret &= bits; return ret; } +EXPORT_SYMBOL(locomo_gpio_read_output); -void locomo_gpio_write(struct locomo_dev *ldev, unsigned int bits, unsigned int set) +void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set) { - struct locomo *lchip = locomo_chip_driver(ldev); + struct locomo *lchip = dev_get_drvdata(dev); unsigned long flags; unsigned int r; + if (!lchip) + return; + spin_lock_irqsave(&lchip->lock, flags); r = locomo_readl(lchip->base + LOCOMO_GPO); @@ -877,6 +622,7 @@ void locomo_gpio_write(struct locomo_dev *ldev, unsigned int bits, unsigned int spin_unlock_irqrestore(&lchip->lock, flags); } +EXPORT_SYMBOL(locomo_gpio_write); static void locomo_m62332_sendbit(void *mapbase, int bit) { @@ -960,7 +706,7 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ printk(KERN_WARNING "locomo: m62332_senddata Error 1\n"); - return; + goto out; } /* Send Sub address (LSB is channel select) */ @@ -988,7 +734,7 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ printk(KERN_WARNING "locomo: m62332_senddata Error 2\n"); - return; + goto out; } /* Send DAC data */ @@ -1013,9 +759,9 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ printk(KERN_WARNING "locomo: m62332_senddata Error 3\n"); - return; } +out: /* stop */ r = locomo_readl(mapbase + LOCOMO_DAC); r &= ~(LOCOMO_DAC_SCLOEB); @@ -1041,6 +787,30 @@ void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int spin_unlock_irqrestore(&lchip->lock, flags); } +EXPORT_SYMBOL(locomo_m62332_senddata); + +/* + * Frontlight control + */ + +void locomo_frontlight_set(struct locomo_dev *dev, int duty, int vr, int bpwf) +{ + unsigned long flags; + struct locomo *lchip = locomo_chip_driver(dev); + + if (vr) + locomo_gpio_write(dev->dev.parent, LOCOMO_GPIO_FL_VR, 1); + else + locomo_gpio_write(dev->dev.parent, LOCOMO_GPIO_FL_VR, 0); + + spin_lock_irqsave(&lchip->lock, flags); + locomo_writel(bpwf, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); + udelay(100); + locomo_writel(duty, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); + locomo_writel(bpwf | LOCOMO_ALC_EN, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); + spin_unlock_irqrestore(&lchip->lock, flags); +} +EXPORT_SYMBOL(locomo_frontlight_set); /* * LoCoMo "Register Access Bus." @@ -1114,11 +884,13 @@ int locomo_driver_register(struct locomo_driver *driver) driver->drv.bus = &locomo_bus_type; return driver_register(&driver->drv); } +EXPORT_SYMBOL(locomo_driver_register); void locomo_driver_unregister(struct locomo_driver *driver) { driver_unregister(&driver->drv); } +EXPORT_SYMBOL(locomo_driver_unregister); static int __init locomo_init(void) { @@ -1140,11 +912,3 @@ module_exit(locomo_exit); MODULE_DESCRIPTION("Sharp LoCoMo core driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>"); - -EXPORT_SYMBOL(locomo_driver_register); -EXPORT_SYMBOL(locomo_driver_unregister); -EXPORT_SYMBOL(locomo_gpio_set_dir); -EXPORT_SYMBOL(locomo_gpio_read_level); -EXPORT_SYMBOL(locomo_gpio_read_output); -EXPORT_SYMBOL(locomo_gpio_write); -EXPORT_SYMBOL(locomo_m62332_senddata); |