patch-2.4.25 linux-2.4.25/arch/mips/vr41xx/common/vrc4171.c

• Lines: 107
• Date: 2004-02-18 05:36:30.000000000 -0800
• Orig file: linux-2.4.24/arch/mips/vr41xx/common/vrc4171.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.24/arch/mips/vr41xx/common/vrc4171.c linux-2.4.25/arch/mips/vr41xx/common/vrc4171.c
@@ -0,0 +1,106 @@
+/*
+ *  vrc4171.c, NEC VRC4171 base driver.
+ *
+ *  Copyright (C) 2003  Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/vr41xx/vrc4171.h>
+
+MODULE_DESCRIPTION("NEC VRC4171 base driver");
+MODULE_AUTHOR("Yoichi Yuasa <yuasa@hh.iij4u.or.jp>");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL_GPL(vrc4171_get_irq_status);
+EXPORT_SYMBOL_GPL(vrc4171_set_multifunction_pin);
+
+#define CONFIGURATION1		0x05fe
+ #define SLOTB_CONFIG		0xc000
+ #define SLOTB_NONE		0x0000
+ #define SLOTB_PCCARD		0x4000
+ #define SLOTB_CF		0x8000
+ #define SLOTB_FLASHROM		0xc000
+
+#define CONFIGURATION2		0x05fc
+#define INTERRUPT_STATUS	0x05fa
+#define PCS_CONTROL		0x05ee
+#define GPIO_DATA		PCS_CONTROL
+#define PCS0_UPPER_START	0x05ec
+#define PCS0_LOWER_START	0x05ea
+#define PCS0_UPPER_STOP		0x05e8
+#define PCS0_LOWER_STOP		0x05e6
+#define PCS1_UPPER_START	0x05e4
+#define PCS1_LOWER_START	0x05e2
+#define PCS1_UPPER_STOP		0x05de
+#define PCS1_LOWER_STOP		0x05dc
+
+#define VRC4171_REGS_BASE	PCS1_LOWER_STOP
+#define VRC4171_REGS_SIZE	0x24
+
+uint16_t vrc4171_get_irq_status(void)
+{
+	return inw(INTERRUPT_STATUS);
+}
+
+void vrc4171_set_multifunction_pin(int config)
+{
+	uint16_t config1;
+
+	config1 = inw(CONFIGURATION1);
+	config1 &= ~SLOTB_CONFIG;
+
+	switch (config) {
+	case SLOTB_IS_NONE:
+		config1 |= SLOTB_NONE;
+		break;
+	case SLOTB_IS_PCCARD:
+		config1 |= SLOTB_PCCARD;
+		break;
+	case SLOTB_IS_CF:
+		config1 |= SLOTB_CF;
+		break;
+	case SLOTB_IS_FLASHROM:
+		config1 |= SLOTB_FLASHROM;
+		break;
+	default:
+		break;
+	}
+
+	outw(config1, CONFIGURATION1);
+}
+
+static int __devinit vrc4171_init(void)
+{
+	if (request_region(VRC4171_REGS_BASE, VRC4171_REGS_SIZE, "NEC VRC4171") == NULL)
+		return -EBUSY;
+
+	printk(KERN_INFO "NEC VRC4171 base driver\n");
+
+	return 0;
+}
+
+static void __devexit vrc4171_exit(void)
+{
+	release_region(VRC4171_REGS_BASE, VRC4171_REGS_SIZE);
+}
+
+module_init(vrc4171_init);
+module_exit(vrc4171_exit);