diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/common/locomo.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/common/locomo.c | 914 |
1 files changed, 0 insertions, 914 deletions
diff --git a/ANDROID_3.4.5/arch/arm/common/locomo.c b/ANDROID_3.4.5/arch/arm/common/locomo.c deleted file mode 100644 index b55c3625..00000000 --- a/ANDROID_3.4.5/arch/arm/common/locomo.c +++ /dev/null @@ -1,914 +0,0 @@ -/* - * linux/arch/arm/common/locomo.c - * - * Sharp LoCoMo support - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This file contains all generic LoCoMo support. - * - * All initialization functions provided here are intended to be called - * from machine specific code with proper arguments when required. - * - * Based on sa1111.c - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/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 */ -/* DAC send data */ -#define M62332_SLAVE_ADDR 0x4e /* Slave address */ -#define M62332_W_BIT 0x00 /* W bit (0 only) */ -#define M62332_SUB_ADDR 0x00 /* Sub address */ -#define M62332_A_BIT 0x00 /* A bit (0 only) */ - -/* DAC setup and hold times (expressed in us) */ -#define DAC_BUS_FREE_TIME 5 /* 4.7 us */ -#define DAC_START_SETUP_TIME 5 /* 4.7 us */ -#define DAC_STOP_SETUP_TIME 4 /* 4.0 us */ -#define DAC_START_HOLD_TIME 5 /* 4.7 us */ -#define DAC_SCL_LOW_HOLD_TIME 5 /* 4.7 us */ -#define DAC_SCL_HIGH_HOLD_TIME 4 /* 4.0 us */ -#define DAC_DATA_SETUP_TIME 1 /* 250 ns */ -#define DAC_DATA_HOLD_TIME 1 /* 300 ns */ -#define DAC_LOW_SETUP_TIME 1 /* 300 ns */ -#define DAC_HIGH_SETUP_TIME 1 /* 1000 ns */ - -/* the following is the overall data for the locomo chip */ -struct locomo { - struct device *dev; - unsigned long phys; - unsigned int irq; - int irq_base; - spinlock_t lock; - void __iomem *base; -#ifdef CONFIG_PM - void *saved_state; -#endif -}; - -struct locomo_dev_info { - unsigned long offset; - unsigned long length; - unsigned int devid; - unsigned int irq[1]; - const char * name; -}; - -/* All the locomo devices. If offset is non-zero, the mapbase for the - * locomo_dev will be set to the chip base plus offset. If offset is - * zero, then the mapbase for the locomo_dev will be set to zero. An - * offset of zero means the device only uses GPIOs or other helper - * functions inside this file */ -static struct locomo_dev_info locomo_devices[] = { - { - .devid = LOCOMO_DEVID_KEYBOARD, - .irq = { IRQ_LOCOMO_KEY }, - .name = "locomo-keyboard", - .offset = LOCOMO_KEYBOARD, - .length = 16, - }, - { - .devid = LOCOMO_DEVID_FRONTLIGHT, - .irq = {}, - .name = "locomo-frontlight", - .offset = LOCOMO_FRONTLIGHT, - .length = 8, - - }, - { - .devid = LOCOMO_DEVID_BACKLIGHT, - .irq = {}, - .name = "locomo-backlight", - .offset = LOCOMO_BACKLIGHT, - .length = 8, - }, - { - .devid = LOCOMO_DEVID_AUDIO, - .irq = {}, - .name = "locomo-audio", - .offset = LOCOMO_AUDIO, - .length = 4, - }, - { - .devid = LOCOMO_DEVID_LED, - .irq = {}, - .name = "locomo-led", - .offset = LOCOMO_LED, - .length = 8, - }, - { - .devid = LOCOMO_DEVID_UART, - .irq = {}, - .name = "locomo-uart", - .offset = 0, - .length = 0, - }, - { - .devid = LOCOMO_DEVID_SPI, - .irq = {}, - .name = "locomo-spi", - .offset = LOCOMO_SPI, - .length = 0x30, - }, -}; - -static void locomo_handler(unsigned int irq, struct irq_desc *desc) -{ - struct locomo *lchip = irq_get_chip_data(irq); - int req, i; - - /* Acknowledge the parent IRQ */ - desc->irq_data.chip->irq_ack(&desc->irq_data); - - /* check why this interrupt was generated */ - req = locomo_readl(lchip->base + LOCOMO_ICR) & 0x0f00; - - if (req) { - /* generate the next interrupt(s) */ - irq = lchip->irq_base; - for (i = 0; i <= 3; i++, irq++) { - if (req & (0x0100 << i)) { - generic_handle_irq(irq); - } - - } - } -} - -static void locomo_ack_irq(struct irq_data *d) -{ -} - -static void locomo_mask_irq(struct irq_data *d) -{ - struct locomo *lchip = irq_data_get_irq_chip_data(d); - unsigned int r; - r = locomo_readl(lchip->base + LOCOMO_ICR); - r &= ~(0x0010 << (d->irq - lchip->irq_base)); - locomo_writel(r, lchip->base + LOCOMO_ICR); -} - -static void locomo_unmask_irq(struct irq_data *d) -{ - struct locomo *lchip = irq_data_get_irq_chip_data(d); - unsigned int r; - r = locomo_readl(lchip->base + LOCOMO_ICR); - r |= (0x0010 << (d->irq - lchip->irq_base)); - locomo_writel(r, lchip->base + LOCOMO_ICR); -} - -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 = lchip->irq_base; - - /* - * Install handler for IRQ_LOCOMO_HW. - */ - 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); - } -} - - -static void locomo_dev_release(struct device *_dev) -{ - struct locomo_dev *dev = LOCOMO_DEV(_dev); - - kfree(dev); -} - -static int -locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) -{ - struct locomo_dev *dev; - int ret; - - dev = kzalloc(sizeof(struct locomo_dev), GFP_KERNEL); - if (!dev) { - ret = -ENOMEM; - goto out; - } - - /* - * If the parent device has a DMA mask associated with it, - * propagate it down to the children. - */ - if (lchip->dev->dma_mask) { - dev->dma_mask = *lchip->dev->dma_mask; - 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; - dev->dev.release = locomo_dev_release; - dev->dev.coherent_dma_mask = lchip->dev->coherent_dma_mask; - - if (info->offset) - dev->mapbase = lchip->base + info->offset; - else - dev->mapbase = 0; - dev->length = info->length; - - dev->irq[0] = (lchip->irq_base == NO_IRQ) ? - NO_IRQ : lchip->irq_base + info->irq[0]; - - ret = device_register(&dev->dev); - if (ret) { - out: - kfree(dev); - } - 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 platform_device *dev, pm_message_t state) -{ - struct locomo *lchip = platform_get_drvdata(dev); - struct locomo_save_data *save; - unsigned long flags; - - save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL); - if (!save) - return -ENOMEM; - - 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_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_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)) - 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 platform_device *dev) -{ - struct locomo *lchip = platform_get_drvdata(dev); - struct locomo_save_data *save; - unsigned long r; - unsigned long flags; - - 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_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_SPI + 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); - - lchip->saved_state = NULL; - kfree(save); - - return 0; -} -#endif - - -/** - * locomo_probe - probe for a single LoCoMo chip. - * @phys_addr: physical address of device. - * - * Probe for a LoCoMo chip. This must be called - * before any other locomo-specific code. - * - * Returns: - * %-ENODEV device not found. - * %-EBUSY physical address already marked in-use. - * %0 successful. - */ -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 = kzalloc(sizeof(struct locomo), GFP_KERNEL); - if (!lchip) - return -ENOMEM; - - spin_lock_init(&lchip->lock); - - lchip->dev = me; - dev_set_drvdata(lchip->dev, lchip); - - lchip->phys = mem->start; - lchip->irq = irq; - lchip->irq_base = (pdata) ? pdata->irq_base : NO_IRQ; - - /* - * Map the whole region. This also maps the - * registers for our children. - */ - lchip->base = ioremap(mem->start, PAGE_SIZE); - if (!lchip->base) { - ret = -ENOMEM; - goto out; - } - - /* locomo initialize */ - locomo_writel(0, lchip->base + LOCOMO_ICR); - /* KEYBOARD */ - locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); - - /* GPIO */ - locomo_writel(0, lchip->base + LOCOMO_GPO); - locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) - , lchip->base + LOCOMO_GPE); - 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 */ - 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_SPI + LOCOMO_SPIIE); - - locomo_writel(6 + 8 + 320 + 30 - 10, lchip->base + LOCOMO_ASD); - r = locomo_readl(lchip->base + LOCOMO_ASD); - r |= 0x8000; - locomo_writel(r, lchip->base + LOCOMO_ASD); - - locomo_writel(6 + 8 + 320 + 30 - 10 - 128 + 4, lchip->base + LOCOMO_HSD); - r = locomo_readl(lchip->base + LOCOMO_HSD); - r |= 0x8000; - locomo_writel(r, lchip->base + LOCOMO_HSD); - - locomo_writel(128 / 8, lchip->base + LOCOMO_HSC); - - /* XON */ - locomo_writel(0x80, lchip->base + LOCOMO_TADC); - udelay(1000); - /* CLK9MEN */ - r = locomo_readl(lchip->base + LOCOMO_TADC); - r |= 0x10; - locomo_writel(r, lchip->base + LOCOMO_TADC); - udelay(100); - - /* init DAC */ - r = locomo_readl(lchip->base + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; - locomo_writel(r, lchip->base + LOCOMO_DAC); - - r = locomo_readl(lchip->base + LOCOMO_VER); - printk(KERN_INFO "LoCoMo Chip: %lu%lu\n", (r >> 8), (r & 0xff)); - - /* - * The interrupt controller must be initialised before any - * other device to ensure that the interrupts are available. - */ - 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: - kfree(lchip); - return ret; -} - -static int locomo_remove_child(struct device *dev, void *data) -{ - device_unregister(dev); - return 0; -} - -static void __locomo_remove(struct locomo *lchip) -{ - device_for_each_child(lchip->dev, NULL, locomo_remove_child); - - if (lchip->irq != NO_IRQ) { - irq_set_chained_handler(lchip->irq, NULL); - irq_set_handler_data(lchip->irq, NULL); - } - - iounmap(lchip->base); - kfree(lchip); -} - -static int locomo_probe(struct platform_device *dev) -{ - struct resource *mem; - int irq; - - mem = platform_get_resource(dev, IORESOURCE_MEM, 0); - if (!mem) - return -EINVAL; - irq = platform_get_irq(dev, 0); - if (irq < 0) - return -ENXIO; - - return __locomo_probe(&dev->dev, mem, irq); -} - -static int locomo_remove(struct platform_device *dev) -{ - struct locomo *lchip = platform_get_drvdata(dev); - - if (lchip) { - __locomo_remove(lchip); - platform_set_drvdata(dev, NULL); - } - - return 0; -} - -/* - * Not sure if this should be on the system bus or not yet. - * We really want some way to register a system device at - * the per-machine level, and then have this driver pick - * up the registered devices. - */ -static struct platform_driver locomo_device_driver = { - .probe = locomo_probe, - .remove = locomo_remove, -#ifdef CONFIG_PM - .suspend = locomo_suspend, - .resume = locomo_resume, -#endif - .driver = { - .name = "locomo", - }, -}; - -/* - * Get the parent device driver (us) structure - * from a child function device - */ -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 device *dev, unsigned int bits, unsigned int dir) -{ - 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); - if (dir) - r |= bits; - else - r &= ~bits; - locomo_writel(r, lchip->base + LOCOMO_GPD); - - r = locomo_readl(lchip->base + LOCOMO_GPE); - if (dir) - r |= bits; - else - r &= ~bits; - locomo_writel(r, lchip->base + LOCOMO_GPE); - - spin_unlock_irqrestore(&lchip->lock, flags); -} -EXPORT_SYMBOL(locomo_gpio_set_dir); - -int locomo_gpio_read_level(struct device *dev, unsigned int bits) -{ - 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); - - ret &= bits; - return ret; -} -EXPORT_SYMBOL(locomo_gpio_read_level); - -int locomo_gpio_read_output(struct device *dev, unsigned int bits) -{ - 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); - - ret &= bits; - return ret; -} -EXPORT_SYMBOL(locomo_gpio_read_output); - -void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set) -{ - 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); - if (set) - r |= bits; - else - r &= ~bits; - locomo_writel(r, lchip->base + LOCOMO_GPO); - - spin_unlock_irqrestore(&lchip->lock, flags); -} -EXPORT_SYMBOL(locomo_gpio_write); - -static void locomo_m62332_sendbit(void *mapbase, int bit) -{ - unsigned int r; - - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SCLOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SCLOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ - - if (bit & 1) { - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SDAOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - } else { - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SDAOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - } - - udelay(DAC_DATA_SETUP_TIME); /* 250 nsec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */ -} - -void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int channel) -{ - struct locomo *lchip = locomo_chip_driver(ldev); - int i; - unsigned char data; - unsigned int r; - void *mapbase = lchip->base; - unsigned long flags; - - spin_lock_irqsave(&lchip->lock, flags); - - /* Start */ - udelay(DAC_BUS_FREE_TIME); /* 5.0 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SDAOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_START_HOLD_TIME); /* 5.0 usec */ - udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */ - - /* Send slave address and W bit (LSB is W bit) */ - data = (M62332_SLAVE_ADDR << 1) | M62332_W_BIT; - for (i = 1; i <= 8; i++) { - locomo_m62332_sendbit(mapbase, data >> (8 - i)); - } - - /* Check A bit */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SCLOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SDAOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - 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"); - goto out; - } - - /* Send Sub address (LSB is channel select) */ - /* channel = 0 : ch1 select */ - /* = 1 : ch2 select */ - data = M62332_SUB_ADDR + channel; - for (i = 1; i <= 8; i++) { - locomo_m62332_sendbit(mapbase, data >> (8 - i)); - } - - /* Check A bit */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SCLOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SDAOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - 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"); - goto out; - } - - /* Send DAC data */ - for (i = 1; i <= 8; i++) { - locomo_m62332_sendbit(mapbase, dac_data >> (8 - i)); - } - - /* Check A bit */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SCLOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SDAOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - 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"); - } - -out: - /* stop */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r &= ~(LOCOMO_DAC_SCLOEB); - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ - udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */ - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SDAOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ - udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */ - - r = locomo_readl(mapbase + LOCOMO_DAC); - r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; - locomo_writel(r, mapbase + LOCOMO_DAC); - udelay(DAC_LOW_SETUP_TIME); /* 1000 nsec */ - udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ - - 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." - * - * We model this as a regular bus type, and hang devices directly - * off this. - */ -static int locomo_match(struct device *_dev, struct device_driver *_drv) -{ - struct locomo_dev *dev = LOCOMO_DEV(_dev); - struct locomo_driver *drv = LOCOMO_DRV(_drv); - - return dev->devid == drv->devid; -} - -static int locomo_bus_suspend(struct device *dev, pm_message_t state) -{ - struct locomo_dev *ldev = LOCOMO_DEV(dev); - struct locomo_driver *drv = LOCOMO_DRV(dev->driver); - int ret = 0; - - if (drv && drv->suspend) - ret = drv->suspend(ldev, state); - return ret; -} - -static int locomo_bus_resume(struct device *dev) -{ - struct locomo_dev *ldev = LOCOMO_DEV(dev); - struct locomo_driver *drv = LOCOMO_DRV(dev->driver); - int ret = 0; - - if (drv && drv->resume) - ret = drv->resume(ldev); - return ret; -} - -static int locomo_bus_probe(struct device *dev) -{ - struct locomo_dev *ldev = LOCOMO_DEV(dev); - struct locomo_driver *drv = LOCOMO_DRV(dev->driver); - int ret = -ENODEV; - - if (drv->probe) - ret = drv->probe(ldev); - return ret; -} - -static int locomo_bus_remove(struct device *dev) -{ - struct locomo_dev *ldev = LOCOMO_DEV(dev); - struct locomo_driver *drv = LOCOMO_DRV(dev->driver); - int ret = 0; - - if (drv->remove) - ret = drv->remove(ldev); - return ret; -} - -struct bus_type locomo_bus_type = { - .name = "locomo-bus", - .match = locomo_match, - .probe = locomo_bus_probe, - .remove = locomo_bus_remove, - .suspend = locomo_bus_suspend, - .resume = locomo_bus_resume, -}; - -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) -{ - int ret = bus_register(&locomo_bus_type); - if (ret == 0) - platform_driver_register(&locomo_device_driver); - return ret; -} - -static void __exit locomo_exit(void) -{ - platform_driver_unregister(&locomo_device_driver); - bus_unregister(&locomo_bus_type); -} - -module_init(locomo_init); -module_exit(locomo_exit); - -MODULE_DESCRIPTION("Sharp LoCoMo core driver"); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>"); |