patch-2.4.23 linux-2.4.23/include/asm-arm/sl811-hw.h

• Lines: 149
• Date: 2003-11-28 10:26:21.000000000 -0800
• Orig file: linux-2.4.22/include/asm-arm/sl811-hw.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/include/asm-arm/sl811-hw.h linux-2.4.23/include/asm-arm/sl811-hw.h
@@ -0,0 +1,148 @@
+/*
+File: include/asm-arm/sl811-hw.h
+
+19.09.2003 hne@ist1.de
+Use Kernel 2.4.20 and this source from 2.4.22
+Splitt hardware depens into file sl811-x86.h and sl811-arm.h.
+Functions as inline.
+
+23.09.2003 hne
+Move Hardware depend header sl811-arm.h into include/asm-arm/sl811-hw.h.
+GPRD as parameter.
+
+24.09.2003 hne
+Use Offset from ADDR to DATA instand of direct io.
+
+03.10.2003 hne
+Low level only for port io into hardware-include.
+*/
+
+#ifndef __LINUX_SL811_HW_H
+#define __LINUX_SL811_HW_H
+
+#define MAX_CONTROLERS		1	/* Max number of sl811 controllers */
+					/* Always 1 for this architecture! */
+
+#define SIZEOF_IO_REGION	1	/* Size for request/release region */
+
+#define OFFSET_DATA_REG data_off	/* Offset from ADDR_IO to DATA_IO (future) */
+					/* Can change by arg */
+
+static int io = 0xf100000e;	/* Base addr_io */
+static int data_off = 1;	/* Offset from addr_io to addr_io */
+static int irq = 44;		/* also change gprd !!! */
+static int gprd = 23;		/* also change irq  !!! */
+
+MODULE_PARM(io,"i");
+MODULE_PARM_DESC(io,"sl811 address io port 0xf100000e");
+MODULE_PARM(data_off,"i");
+MODULE_PARM_DESC(data_off,"sl811 data io port offset from address port (default 1)");
+MODULE_PARM(irq,"i");
+MODULE_PARM_DESC(irq,"sl811 irq 44(default)");
+MODULE_PARM(gprd,"i");
+MODULE_PARM_DESC(gprd,"sl811 GPRD port 23(default)");
+
+/*
+ * Low level: Read from Data port [arm]
+ */
+static __u8 inline sl811_read_data (struct sl811_hc *hc)
+{
+	__u8 data;
+	data = readb(hc->data_io);
+	rmb();
+	return data;
+}
+
+/*
+ * Low level: Write to index register [arm]
+ */
+static void inline sl811_write_index (struct sl811_hc *hc, __u8 index)
+{
+	writeb(index, hc->addr_io);
+	wmb();
+}
+
+/*
+ * Low level: Write to Data port [arm]
+ */
+static void inline sl811_write_data (struct sl811_hc *hc, __u8 data)
+{
+	writeb(data, hc->data_io);
+	wmb();
+}
+
+/*
+ * Low level: Write to index register and data port [arm]
+ */
+static void inline sl811_write_index_data (struct sl811_hc *hc, __u8 index, __u8 data)
+{
+	writeb(index, hc->addr_io);
+	writeb(data, hc->data_io);
+	wmb();
+}
+
+
+/*
+ * This	function is board specific.  It	sets up	the interrupt to
+ * be an edge trigger and trigger on the rising	edge
+ */
+static void inline sl811_init_irq(void)
+{
+	GPDR &=	~(1<<gprd);
+	set_GPIO_IRQ_edge(1<<gprd, GPIO_RISING_EDGE);
+}
+
+/*****************************************************************
+ *
+ * Function Name: release_regions [arm]
+ *
+ * This function is board specific. It release all io address
+ * from memory (if can).
+ *
+ * Input: struct sl811_hc * *
+ *
+ * Return value  : 0 = OK
+ *
+ *****************************************************************/
+static void inline sl811_release_regions(struct sl811_hc *hc)
+{
+	if (hc->addr_io)
+		release_region(hc->addr_io, SIZEOF_IO_REGION);
+	hc->addr_io = 0;
+
+	if (hc->data_io)
+		release_region(hc->data_io, SIZEOF_IO_REGION);
+	hc->data_io = 0;
+}
+
+/*****************************************************************
+ *
+ * Function Name: request_regions [arm]
+ *
+ * This function is board specific. It request all io address and
+ * maps into memory (if can).
+ *
+ * Input: struct sl811_hc *
+ *
+ * Return value  : 0 = OK
+ *
+ *****************************************************************/
+static int inline sl811_request_regions (struct sl811_hc *hc, int addr_io, int data_io, const char *name)
+{
+	if (!request_region(addr_io, SIZEOF_IO_REGION, name)) {
+		PDEBUG(3, "request address %d failed", addr_io);
+		return -EBUSY;
+	}
+	hc->addr_io =	addr_io;
+
+	if (!request_region(data_io, SIZEOF_IO_REGION, MODNAME)) {
+		PDEBUG(3, "request address %d failed", data_io);
+		/* release_region(hc->addr_io, SIZEOF_IO_REGION); */
+		return -EBUSY;
+	}
+	hc->data_io =	data_io;
+
+	return 0;
+}
+
+#endif // __LINUX_SL811_HW_H