#include <linux/slab.h>
#include <linux/platform_device.h>
#include <asm/io.h>
+#include <asm/gpio.h>
#include <asm/hardware/scoop.h>
/* PCMCIA to Scoop linkage
struct scoop_pcmcia_config *platform_scoop_config;
EXPORT_SYMBOL(platform_scoop_config);
-#define SCOOP_REG(d,adr) (*(volatile unsigned short*)(d +(adr)))
-
struct scoop_dev {
- void *base;
+ void __iomem *base;
+ struct gpio_chip gpio;
spinlock_t scoop_lock;
unsigned short suspend_clr;
unsigned short suspend_set;
{
struct scoop_dev *sdev = dev_get_drvdata(dev);
- SCOOP_REG(sdev->base,SCOOP_MCR) = 0x0100; // 00
- SCOOP_REG(sdev->base,SCOOP_CDR) = 0x0000; // 04
- SCOOP_REG(sdev->base,SCOOP_CCR) = 0x0000; // 10
- SCOOP_REG(sdev->base,SCOOP_IMR) = 0x0000; // 18
- SCOOP_REG(sdev->base,SCOOP_IRM) = 0x00FF; // 14
- SCOOP_REG(sdev->base,SCOOP_ISR) = 0x0000; // 1C
- SCOOP_REG(sdev->base,SCOOP_IRM) = 0x0000;
+ iowrite16(0x0100, sdev->base + SCOOP_MCR); // 00
+ iowrite16(0x0000, sdev->base + SCOOP_CDR); // 04
+ iowrite16(0x0000, sdev->base + SCOOP_CCR); // 10
+ iowrite16(0x0000, sdev->base + SCOOP_IMR); // 18
+ iowrite16(0x00FF, sdev->base + SCOOP_IRM); // 14
+ iowrite16(0x0000, sdev->base + SCOOP_ISR); // 1C
+ iowrite16(0x0000, sdev->base + SCOOP_IRM);
+}
+
+static void __scoop_gpio_set(struct scoop_dev *sdev,
+ unsigned offset, int value)
+{
+ unsigned short gpwr;
+
+ gpwr = ioread16(sdev->base + SCOOP_GPWR);
+ if (value)
+ gpwr |= 1 << (offset + 1);
+ else
+ gpwr &= ~(1 << (offset + 1));
+ iowrite16(gpwr, sdev->base + SCOOP_GPWR);
+}
+
+static void scoop_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&sdev->scoop_lock, flags);
+
+ __scoop_gpio_set(sdev, offset, value);
+
+ spin_unlock_irqrestore(&sdev->scoop_lock, flags);
+}
+
+static int scoop_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio);
+
+ /* XXX: I'm usure, but it seems so */
+ return ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1));
+}
+
+static int scoop_gpio_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio);
+ unsigned long flags;
+ unsigned short gpcr;
+
+ spin_lock_irqsave(&sdev->scoop_lock, flags);
+
+ gpcr = ioread16(sdev->base + SCOOP_GPCR);
+ gpcr &= ~(1 << (offset + 1));
+ iowrite16(gpcr, sdev->base + SCOOP_GPCR);
+
+ spin_unlock_irqrestore(&sdev->scoop_lock, flags);
+
+ return 0;
+}
+
+static int scoop_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio);
+ unsigned long flags;
+ unsigned short gpcr;
+
+ spin_lock_irqsave(&sdev->scoop_lock, flags);
+
+ __scoop_gpio_set(sdev, offset, value);
+
+ gpcr = ioread16(sdev->base + SCOOP_GPCR);
+ gpcr |= 1 << (offset + 1);
+ iowrite16(gpcr, sdev->base + SCOOP_GPCR);
+
+ spin_unlock_irqrestore(&sdev->scoop_lock, flags);
+
+ return 0;
}
unsigned short set_scoop_gpio(struct device *dev, unsigned short bit)
struct scoop_dev *sdev = dev_get_drvdata(dev);
spin_lock_irqsave(&sdev->scoop_lock, flag);
- gpio_bit = SCOOP_REG(sdev->base, SCOOP_GPWR) | bit;
- SCOOP_REG(sdev->base, SCOOP_GPWR) = gpio_bit;
+ gpio_bit = ioread16(sdev->base + SCOOP_GPWR) | bit;
+ iowrite16(gpio_bit, sdev->base + SCOOP_GPWR);
spin_unlock_irqrestore(&sdev->scoop_lock, flag);
return gpio_bit;
struct scoop_dev *sdev = dev_get_drvdata(dev);
spin_lock_irqsave(&sdev->scoop_lock, flag);
- gpio_bit = SCOOP_REG(sdev->base, SCOOP_GPWR) & ~bit;
- SCOOP_REG(sdev->base,SCOOP_GPWR) = gpio_bit;
+ gpio_bit = ioread16(sdev->base + SCOOP_GPWR) & ~bit;
+ iowrite16(gpio_bit, sdev->base + SCOOP_GPWR);
spin_unlock_irqrestore(&sdev->scoop_lock, flag);
return gpio_bit;
unsigned short read_scoop_reg(struct device *dev, unsigned short reg)
{
struct scoop_dev *sdev = dev_get_drvdata(dev);
- return SCOOP_REG(sdev->base,reg);
+ return ioread16(sdev->base + reg);
}
void write_scoop_reg(struct device *dev, unsigned short reg, unsigned short data)
{
struct scoop_dev *sdev = dev_get_drvdata(dev);
- SCOOP_REG(sdev->base,reg)=data;
+ iowrite16(data, sdev->base + reg);
}
EXPORT_SYMBOL(reset_scoop);
{
unsigned short mcr;
- mcr = SCOOP_REG(sdev->base, SCOOP_MCR);
+ mcr = ioread16(sdev->base + SCOOP_MCR);
if ((mcr & 0x100) == 0)
- SCOOP_REG(sdev->base, SCOOP_MCR) = 0x0101;
+ iowrite16(0x0101, sdev->base + SCOOP_MCR);
}
#ifdef CONFIG_PM
struct scoop_dev *sdev = platform_get_drvdata(dev);
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;
+ sdev->scoop_gpwr = ioread16(sdev->base + SCOOP_GPWR);
+ iowrite16((sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set, sdev->base + SCOOP_GPWR);
return 0;
}
struct scoop_dev *sdev = platform_get_drvdata(dev);
check_scoop_reg(sdev);
- SCOOP_REG(sdev->base,SCOOP_GPWR) = sdev->scoop_gpwr;
+ iowrite16(sdev->scoop_gpwr, sdev->base + SCOOP_GPWR);
return 0;
}
#define scoop_resume NULL
#endif
-int __init scoop_probe(struct platform_device *pdev)
+static int __devinit scoop_probe(struct platform_device *pdev)
{
struct scoop_dev *devptr;
struct scoop_config *inf;
struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ int ret;
+ int temp;
if (!mem)
return -EINVAL;
devptr->base = ioremap(mem->start, mem->end - mem->start + 1);
if (!devptr->base) {
- kfree(devptr);
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto err_ioremap;
}
platform_set_drvdata(pdev, devptr);
- printk("Sharp Scoop Device found at 0x%08x -> 0x%08x\n",(unsigned int)mem->start,(unsigned int)devptr->base);
+ printk("Sharp Scoop Device found at 0x%08x -> 0x%8p\n",(unsigned int)mem->start, devptr->base);
- SCOOP_REG(devptr->base, SCOOP_MCR) = 0x0140;
+ iowrite16(0x0140, devptr->base + SCOOP_MCR);
reset_scoop(&pdev->dev);
- SCOOP_REG(devptr->base, SCOOP_CPR) = 0x0000;
- SCOOP_REG(devptr->base, SCOOP_GPCR) = inf->io_dir & 0xffff;
- SCOOP_REG(devptr->base, SCOOP_GPWR) = inf->io_out & 0xffff;
+ iowrite16(0x0000, devptr->base + SCOOP_CPR);
+ iowrite16(inf->io_dir & 0xffff, devptr->base + SCOOP_GPCR);
+ iowrite16(inf->io_out & 0xffff, devptr->base + SCOOP_GPWR);
devptr->suspend_clr = inf->suspend_clr;
devptr->suspend_set = inf->suspend_set;
+ devptr->gpio.base = -1;
+
+ if (inf->gpio_base != 0) {
+ devptr->gpio.label = dev_name(&pdev->dev);
+ devptr->gpio.base = inf->gpio_base;
+ devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */
+ devptr->gpio.set = scoop_gpio_set;
+ devptr->gpio.get = scoop_gpio_get;
+ devptr->gpio.direction_input = scoop_gpio_direction_input;
+ devptr->gpio.direction_output = scoop_gpio_direction_output;
+
+ ret = gpiochip_add(&devptr->gpio);
+ if (ret)
+ goto err_gpio;
+ }
+
return 0;
+
+ if (devptr->gpio.base != -1)
+ temp = gpiochip_remove(&devptr->gpio);
+err_gpio:
+ platform_set_drvdata(pdev, NULL);
+err_ioremap:
+ iounmap(devptr->base);
+ kfree(devptr);
+
+ return ret;
}
-static int scoop_remove(struct platform_device *pdev)
+static int __devexit scoop_remove(struct platform_device *pdev)
{
struct scoop_dev *sdev = platform_get_drvdata(pdev);
- if (sdev) {
- iounmap(sdev->base);
- kfree(sdev);
- platform_set_drvdata(pdev, NULL);
+ int ret;
+
+ if (!sdev)
+ return -EINVAL;
+
+ if (sdev->gpio.base != -1) {
+ ret = gpiochip_remove(&sdev->gpio);
+ if (ret) {
+ dev_err(&pdev->dev, "Can't remove gpio chip: %d\n", ret);
+ return ret;
+ }
}
+
+ platform_set_drvdata(pdev, NULL);
+ iounmap(sdev->base);
+ kfree(sdev);
+
return 0;
}
static struct platform_driver scoop_driver = {
.probe = scoop_probe,
- .remove = scoop_remove,
+ .remove = __devexit_p(scoop_remove),
.suspend = scoop_suspend,
.resume = scoop_resume,
.driver = {
},
};
-int __init scoop_init(void)
+static int __init scoop_init(void)
{
return platform_driver_register(&scoop_driver);
}
git.openpandora.org / pandora-kernel.git / blobdiff