sh: landisk board support.

This adds support for the I-O DATA Landisk.

Signed-off-by: kogiidena <kogiidena@eggplant.ddo.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 348 insertions, 0 deletions

diff --git a/arch/sh/boards/landisk/landisk_pwb.c b/arch/sh/boards/landisk/landisk_pwb.c
new file mode 100644
index 00000000000..e75cb578a28
--- /dev/null
+++ b/arch/sh/boards/landisk/landisk_pwb.c
@@ -0,0 +1,348 @@
+/*
+ * arch/sh/boards/landisk/landisk_pwb.c -- driver for the Power control switch.
+ *
+ * This driver will also support the I-O DATA Device, Inc. LANDISK Board.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copylight (C) 2002 Atom Create Engineering Co., Ltd.
+ *
+ * LED control drive function added by kogiidena
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/major.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/landisk/iodata_landisk.h>
+
+#define SHUTDOWN_BTN_MINOR	1	/* Shutdown button device minor no. */
+#define LED_MINOR	       21	/* LED minor no. */
+#define BTN_MINOR	       22	/* BUTTON minor no. */
+#define GIO_MINOR	       40	/* GIO minor no. */
+
+static int openCnt;
+static int openCntLED;
+static int openCntGio;
+static int openCntBtn;
+static int landisk_btn;
+static int landisk_btnctrlpid;
+/*
+ * Functions prototypes
+ */
+
+static int gio_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+		     unsigned long arg);
+
+static int swdrv_open(struct inode *inode, struct file *filp)
+{
+	int minor;
+
+	minor = MINOR(inode->i_rdev);
+	filp->private_data = (void *)minor;
+
+	if (minor == SHUTDOWN_BTN_MINOR) {
+		if (openCnt > 0) {
+			return -EALREADY;
+		} else {
+			openCnt++;
+			return 0;
+		}
+	} else if (minor == LED_MINOR) {
+		if (openCntLED > 0) {
+			return -EALREADY;
+		} else {
+			openCntLED++;
+			return 0;
+		}
+	} else if (minor == BTN_MINOR) {
+		if (openCntBtn > 0) {
+			return -EALREADY;
+		} else {
+			openCntBtn++;
+			return 0;
+		}
+	} else if (minor == GIO_MINOR) {
+		if (openCntGio > 0) {
+			return -EALREADY;
+		} else {
+			openCntGio++;
+			return 0;
+		}
+	}
+	return -ENOENT;
+
+}
+
+static int swdrv_close(struct inode *inode, struct file *filp)
+{
+	int minor;
+
+	minor = MINOR(inode->i_rdev);
+	if (minor == SHUTDOWN_BTN_MINOR) {
+		openCnt--;
+	} else if (minor == LED_MINOR) {
+		openCntLED--;
+	} else if (minor == BTN_MINOR) {
+		openCntBtn--;
+	} else if (minor == GIO_MINOR) {
+		openCntGio--;
+	}
+	return 0;
+}
+
+static int swdrv_read(struct file *filp, char *buff, size_t count,
+		      loff_t * ppos)
+{
+	int minor;
+	minor = (int)(filp->private_data);
+
+	if (!access_ok(VERIFY_WRITE, (void *)buff, count))
+		return -EFAULT;
+
+	if (minor == SHUTDOWN_BTN_MINOR) {
+		if (landisk_btn & 0x10) {
+			put_user(1, buff);
+			return 1;
+		} else {
+			return 0;
+		}
+	}
+	return 0;
+}
+
+static int swdrv_write(struct file *filp, const char *buff, size_t count,
+		       loff_t * ppos)
+{
+	int minor;
+	minor = (int)(filp->private_data);
+
+	if (minor == SHUTDOWN_BTN_MINOR) {
+		return count;
+	}
+	return count;
+}
+
+static irqreturn_t sw_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	landisk_btn = (0x0ff & (~ctrl_inb(PA_STATUS)));
+	disable_irq(IRQ_BUTTON);
+	disable_irq(IRQ_POWER);
+	ctrl_outb(0x00, PA_PWRINT_CLR);
+
+	if (landisk_btnctrlpid != 0) {
+		kill_proc(landisk_btnctrlpid, SIGUSR1, 1);
+		landisk_btnctrlpid = 0;
+	}
+
+	return IRQ_HANDLED;
+}
+
+static struct file_operations swdrv_fops = {
+	.read = swdrv_read,	/* read */
+	.write = swdrv_write,	/* write */
+	.open = swdrv_open,	/* open */
+	.release = swdrv_close,	/* release */
+	.ioctl = gio_ioctl,	/* ioctl */
+
+};
+
+static char banner[] __initdata =
+    KERN_INFO "LANDISK and USL-5P Button, LED and GIO driver initialized\n";
+
+int __init swdrv_init(void)
+{
+	int error;
+
+	printk("%s", banner);
+
+	openCnt = 0;
+	openCntLED = 0;
+	openCntBtn = 0;
+	openCntGio = 0;
+	landisk_btn = 0;
+	landisk_btnctrlpid = 0;
+
+	if ((error = register_chrdev(SHUTDOWN_BTN_MAJOR, "swdrv", &swdrv_fops))) {
+		printk(KERN_ERR
+		       "Button, LED and GIO driver:Couldn't register driver, error=%d\n",
+		       error);
+		return 1;
+	}
+
+	if (request_irq(IRQ_POWER, sw_interrupt, 0, "SHUTDOWNSWITCH", NULL)) {
+		printk(KERN_ERR "Unable to get IRQ 11.\n");
+		return 1;
+	}
+	if (request_irq(IRQ_BUTTON, sw_interrupt, 0, "USL-5P BUTTON", NULL)) {
+		printk(KERN_ERR "Unable to get IRQ 12.\n");
+		return 1;
+	}
+	ctrl_outb(0x00, PA_PWRINT_CLR);
+
+	return 0;
+}
+
+module_init(swdrv_init);
+
+/*
+ * gio driver
+ *
+ */
+
+#include <asm/landisk/gio.h>
+
+static int gio_ioctl(struct inode *inode, struct file *filp,
+		     unsigned int cmd, unsigned long arg)
+{
+	int minor;
+	unsigned int data, mask;
+	static unsigned int addr = 0;
+
+	minor = (int)(filp->private_data);
+
+	/* access control */
+	if (minor == GIO_MINOR) {
+		;
+	} else if (minor == LED_MINOR) {
+		if (((cmd & 0x0ff) >= 9) && ((cmd & 0x0ff) < 20)) {
+			;
+		} else {
+			return -EINVAL;
+		}
+	} else if (minor == BTN_MINOR) {
+		if (((cmd & 0x0ff) >= 20) && ((cmd & 0x0ff) < 30)) {
+			;
+		} else {
+			return -EINVAL;
+		}
+	} else {
+		return -EINVAL;
+	}
+
+	if (cmd & 0x01) {	/* write */
+		if (copy_from_user(&data, (int *)arg, sizeof(int))) {
+			return -EFAULT;
+		}
+	}
+
+	switch (cmd) {
+	case GIODRV_IOCSGIOSETADDR:	/* addres set */
+		addr = data;
+		break;
+
+	case GIODRV_IOCSGIODATA1:	/* write byte */
+		ctrl_outb((unsigned char)(0x0ff & data), addr);
+		break;
+
+	case GIODRV_IOCSGIODATA2:	/* write word */
+		if (addr & 0x01) {
+			return -EFAULT;
+		}
+		ctrl_outw((unsigned short int)(0x0ffff & data), addr);
+		break;
+
+	case GIODRV_IOCSGIODATA4:	/* write long */
+		if (addr & 0x03) {
+			return -EFAULT;
+		}
+		ctrl_outl(data, addr);
+		break;
+
+	case GIODRV_IOCGGIODATA1:	/* read byte */
+		data = ctrl_inb(addr);
+		break;
+
+	case GIODRV_IOCGGIODATA2:	/* read word */
+		if (addr & 0x01) {
+			return -EFAULT;
+		}
+		data = ctrl_inw(addr);
+		break;
+
+	case GIODRV_IOCGGIODATA4:	/* read long */
+		if (addr & 0x03) {
+			return -EFAULT;
+		}
+		data = ctrl_inl(addr);
+		break;
+	case GIODRV_IOCSGIO_LED:	/* write */
+		mask = ((data & 0x00ffffff) << 8)
+		    | ((data & 0x0000ffff) << 16)
+		    | ((data & 0x000000ff) << 24);
+		landisk_ledparam = data & (~mask);
+		if (landisk_arch == 0) {	/* arch == landisk */
+			landisk_ledparam &= 0x03030303;
+			mask = (~(landisk_ledparam >> 22)) & 0x000c;
+			landisk_ledparam |= mask;
+		} else {	                /* arch == usl-5p */
+			mask = (landisk_ledparam >> 24) & 0x0001;
+			landisk_ledparam |= mask;
+			landisk_ledparam &= 0x007f7f7f;
+		}
+		landisk_ledparam |= 0x80;
+		break;
+	case GIODRV_IOCGGIO_LED:	/* read */
+		data = landisk_ledparam;
+		if (landisk_arch == 0) {	/* arch == landisk */
+			data &= 0x03030303;
+		} else {	                /* arch == usl-5p */
+			;
+		}
+		data &= (~0x080);
+		break;
+	case GIODRV_IOCSGIO_BUZZER:	/* write */
+		landisk_buzzerparam = data;
+		landisk_ledparam |= 0x80;
+		break;
+	case GIODRV_IOCGGIO_LANDISK:	/* read */
+		data = landisk_arch & 0x01;
+		break;
+	case GIODRV_IOCGGIO_BTN:	/* read */
+		data = (0x0ff & ctrl_inb(PA_PWRINT_CLR));
+		data <<= 8;
+		data |= (0x0ff & ctrl_inb(PA_IMASK));
+		data <<= 8;
+		data |= (0x0ff & landisk_btn);
+		data <<= 8;
+		data |= (0x0ff & (~ctrl_inb(PA_STATUS)));
+		break;
+	case GIODRV_IOCSGIO_BTNPID:	/* write */
+		landisk_btnctrlpid = data;
+		landisk_btn = 0;
+		if (irq_desc[IRQ_BUTTON].depth) {
+			enable_irq(IRQ_BUTTON);
+		}
+		if (irq_desc[IRQ_POWER].depth) {
+			enable_irq(IRQ_POWER);
+		}
+		break;
+	case GIODRV_IOCGGIO_BTNPID:	/* read */
+		data = landisk_btnctrlpid;
+		break;
+	default:
+		return -EFAULT;
+		break;
+	}
+
+	if ((cmd & 0x01) == 0) {	/* read */
+		if (copy_to_user((int *)arg, &data, sizeof(int))) {
+			return -EFAULT;
+		}
+	}
+	return 0;
+}