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