*/
#include <linux/device.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/hardware/scoop.h>
-static void __iomem *scoop_io_base;
+/* PCMCIA to Scoop linkage
-#define SCOOP_REG(adr) (*(volatile unsigned short*)(scoop_io_base+(adr)))
+ There is no easy way to link multiple scoop devices into one
+ single entity for the pxa2xx_pcmcia device so this structure
+ is used which is setup by the platform code.
-void reset_scoop(void)
+ This file is never modular so this symbol is always
+ accessile to the board support files.
+*/
+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;
+ spinlock_t scoop_lock;
+ unsigned short suspend_clr;
+ unsigned short suspend_set;
+ u32 scoop_gpwr;
+};
+
+void reset_scoop(struct device *dev)
{
- SCOOP_REG(SCOOP_MCR) = 0x0100; // 00
- SCOOP_REG(SCOOP_CDR) = 0x0000; // 04
- SCOOP_REG(SCOOP_CPR) = 0x0000; // 0C
- SCOOP_REG(SCOOP_CCR) = 0x0000; // 10
- SCOOP_REG(SCOOP_IMR) = 0x0000; // 18
- SCOOP_REG(SCOOP_IRM) = 0x00FF; // 14
- SCOOP_REG(SCOOP_ISR) = 0x0000; // 1C
- SCOOP_REG(SCOOP_IRM) = 0x0000;
+ 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;
}
-static DEFINE_SPINLOCK(scoop_lock);
-static u32 scoop_gpwr;
-
-unsigned short set_scoop_gpio(unsigned short bit)
+unsigned short set_scoop_gpio(struct device *dev, unsigned short bit)
{
unsigned short gpio_bit;
unsigned long flag;
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
- spin_lock_irqsave(&scoop_lock, flag);
- gpio_bit = SCOOP_REG(SCOOP_GPWR) | bit;
- SCOOP_REG(SCOOP_GPWR) = gpio_bit;
- spin_unlock_irqrestore(&scoop_lock, flag);
+ spin_lock_irqsave(&sdev->scoop_lock, flag);
+ gpio_bit = SCOOP_REG(sdev->base, SCOOP_GPWR) | bit;
+ SCOOP_REG(sdev->base, SCOOP_GPWR) = gpio_bit;
+ spin_unlock_irqrestore(&sdev->scoop_lock, flag);
return gpio_bit;
}
-unsigned short reset_scoop_gpio(unsigned short bit)
+unsigned short reset_scoop_gpio(struct device *dev, unsigned short bit)
{
unsigned short gpio_bit;
unsigned long flag;
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
- spin_lock_irqsave(&scoop_lock, flag);
- gpio_bit = SCOOP_REG(SCOOP_GPWR) & ~bit;
- SCOOP_REG(SCOOP_GPWR) = gpio_bit;
- spin_unlock_irqrestore(&scoop_lock, flag);
+ spin_lock_irqsave(&sdev->scoop_lock, flag);
+ gpio_bit = SCOOP_REG(sdev->base, SCOOP_GPWR) & ~bit;
+ SCOOP_REG(sdev->base,SCOOP_GPWR) = gpio_bit;
+ spin_unlock_irqrestore(&sdev->scoop_lock, flag);
return gpio_bit;
}
EXPORT_SYMBOL(set_scoop_gpio);
EXPORT_SYMBOL(reset_scoop_gpio);
-unsigned short read_scoop_reg(unsigned short reg)
+unsigned short read_scoop_reg(struct device *dev, unsigned short reg)
{
- return SCOOP_REG(reg);
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
+ return SCOOP_REG(sdev->base,reg);
}
-void write_scoop_reg(unsigned short reg, unsigned short data)
+void write_scoop_reg(struct device *dev, unsigned short reg, unsigned short data)
{
- SCOOP_REG(reg)=data;
+ struct scoop_dev *sdev = dev_get_drvdata(dev);
+ SCOOP_REG(sdev->base,reg)=data;
}
EXPORT_SYMBOL(reset_scoop);
EXPORT_SYMBOL(read_scoop_reg);
EXPORT_SYMBOL(write_scoop_reg);
-static int scoop_suspend(struct device *dev, uint32_t state, uint32_t level)
+static void check_scoop_reg(struct scoop_dev *sdev)
{
- if (level == SUSPEND_POWER_DOWN) {
- scoop_gpwr = SCOOP_REG(SCOOP_GPWR);
- SCOOP_REG(SCOOP_GPWR) = 0;
- }
+ 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 platform_device *dev, pm_message_t state)
+{
+ 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;
+
return 0;
}
-static int scoop_resume(struct device *dev, uint32_t level)
+static int scoop_resume(struct platform_device *dev)
{
- if (level == RESUME_POWER_ON) {
- SCOOP_REG(SCOOP_GPWR) = scoop_gpwr;
- }
+ struct scoop_dev *sdev = platform_get_drvdata(dev);
+
+ check_scoop_reg(sdev);
+ SCOOP_REG(sdev->base,SCOOP_GPWR) = sdev->scoop_gpwr;
+
return 0;
}
+#else
+#define scoop_suspend NULL
+#define scoop_resume NULL
+#endif
-int __init scoop_probe(struct device *dev)
+int __init scoop_probe(struct platform_device *pdev)
{
+ struct scoop_dev *devptr;
struct scoop_config *inf;
- struct platform_device *pdev = to_platform_device(dev);
struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem)
return -EINVAL;
- inf = dev->platform_data;
- scoop_io_base = ioremap(mem->start, 0x1000);
- if (!scoop_io_base)
+ devptr = kzalloc(sizeof(struct scoop_dev), GFP_KERNEL);
+ if (!devptr)
return -ENOMEM;
- SCOOP_REG(SCOOP_MCR) = 0x0140;
+ spin_lock_init(&devptr->scoop_lock);
+
+ inf = pdev->dev.platform_data;
+ devptr->base = ioremap(mem->start, mem->end - mem->start + 1);
+
+ if (!devptr->base) {
+ kfree(devptr);
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(pdev, devptr);
- reset_scoop();
+ printk("Sharp Scoop Device found at 0x%08x -> 0x%08x\n",(unsigned int)mem->start,(unsigned int)devptr->base);
- SCOOP_REG(SCOOP_GPCR) = inf->io_dir & 0xffff;
- SCOOP_REG(SCOOP_GPWR) = inf->io_out & 0xffff;
+ SCOOP_REG(devptr->base, SCOOP_MCR) = 0x0140;
+ 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;
+ devptr->suspend_clr = inf->suspend_clr;
+ devptr->suspend_set = inf->suspend_set;
+
+ return 0;
+}
+
+static int 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);
+ }
return 0;
}
-static struct device_driver scoop_driver = {
- .name = "sharp-scoop",
- .bus = &platform_bus_type,
+static struct platform_driver scoop_driver = {
.probe = scoop_probe,
+ .remove = scoop_remove,
.suspend = scoop_suspend,
.resume = scoop_resume,
+ .driver = {
+ .name = "sharp-scoop",
+ },
};
int __init scoop_init(void)
{
- return driver_register(&scoop_driver);
+ return platform_driver_register(&scoop_driver);
}
subsys_initcall(scoop_init);
git://git.onelab.eu / linux-2.6.git / blobdiff