patch-2.4.22 linux-2.4.22/arch/arm/mach-sa1100/hackkit.c

• Lines: 222
• Date: 2003-08-25 04:44:39.000000000 -0700
• Orig file: linux-2.4.21/arch/arm/mach-sa1100/hackkit.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/arm/mach-sa1100/hackkit.c linux-2.4.22/arch/arm/mach-sa1100/hackkit.c
@@ -0,0 +1,221 @@
+/*
+ * linux/arch/arm/mach-sa1100/hackkit.c
+ *
+ * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
+ *
+ * This file contains all HackKit tweaks. Based on original work from
+ * Nicolas Pitre's assabet fixes
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/cpufreq.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+
+#include <asm/hardware.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/serial_sa1100.h>
+
+#include <asm/arch/irq.h>
+
+#include <linux/serial_core.h>
+
+#include "generic.h"
+
+#define DEBUG 1
+
+#ifdef DEBUG
+#	define DPRINTK( x, args... )	printk( "%s: line %d: "x, __FUNCTION__, __LINE__, ## args  );
+#else
+#	define DPRINTK( x, args... )	/* nix */
+#endif
+
+/**********************************************************************
+ *  prototypes
+ */
+
+/* init funcs */
+static void __init fixup_hackkit(struct machine_desc *desc,
+		struct param_struct *params, char **cmdline, struct meminfo *mi);
+static void __init get_hackkit_scr(void);
+static int __init hackkit_init(void);
+static void __init hackkit_init_irq(void);
+static void __init hackkit_map_io(void);
+
+static int hackkit_get_mctrl(struct uart_port *port);
+static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
+static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
+
+extern void convert_to_tag_list(struct param_struct *params, int mem_init);
+
+
+/**********************************************************************
+ *  global data
+ */
+
+/**********************************************************************
+ *  static data
+ */
+
+static struct map_desc hackkit_io_desc[] __initdata = {
+ /* virtual     physical    length      domain     r  w  c  b */
+  { 0xe8000000, 0x00000000, 0x01000000, DOMAIN_IO, 0, 1, 0, 0 }, /* Flash bank 0 */
+  LAST_DESC
+};
+
+static struct sa1100_port_fns hackkit_port_fns __initdata = {
+	.set_mctrl	= hackkit_set_mctrl,
+	.get_mctrl	= hackkit_get_mctrl,
+	.pm		= hackkit_uart_pm,
+};
+
+/**********************************************************************
+ *  Static functions
+ */
+
+static void __init hackkit_map_io(void)
+{
+	DPRINTK( "%s\n", "START" );
+	sa1100_map_io();
+	iotable_init(hackkit_io_desc);
+
+	sa1100_register_uart_fns(&hackkit_port_fns);
+	sa1100_register_uart(0, 1);	/* com port */
+	sa1100_register_uart(1, 2);
+	sa1100_register_uart(2, 3);	/* radio module */
+
+	Ser1SDCR0 |= SDCR0_SUS;
+}
+
+static void __init hackkit_init_irq(void)
+{
+	/* none used yet */
+}
+
+/**
+ *	fixup_hackkit - fixup function for system 3 board
+ *	@desc:		machine description
+ *	@param:		kernel params
+ *	@cmdline:	kernel cmdline
+ *	@mi:		memory info struct
+ *
+ */
+static void __init fixup_hackkit(struct machine_desc *desc,
+		struct param_struct *params, char **cmdline, struct meminfo *mi)
+{
+	DPRINTK( "%s\n", "START" );
+
+	ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
+	setup_ramdisk( 1, 0, 0, 8192 );
+	setup_initrd( 0xc0800000, 8*1024*1024 );
+}
+
+
+/**
+ *	hackkit_uart_pm - powermgmt callback function for system 3 UART
+ *	@port: uart port structure
+ *	@state: pm state
+ *	@oldstate: old pm state
+ *
+ */
+static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
+{
+	/* TODO: switch on/off uart in powersave mode */
+}
+
+/*
+ * Note! this can be called from IRQ context.
+ * FIXME: No modem ctrl lines yet.
+ */
+static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
+{
+#if 0
+	if (port->mapbase == _Ser1UTCR0) {
+		u_int set = 0, clear = 0;
+
+		if (mctrl & TIOCM_RTS)
+			set |= PT_CTRL2_RS1_RTS;
+		else
+			clear |= PT_CTRL2_RS1_RTS;
+
+		if (mctrl & TIOCM_DTR)
+			set |= PT_CTRL2_RS1_DTR;
+		else
+			clear |= PT_CTRL2_RS1_DTR;
+
+		PTCTRL2_clear(clear);
+		PTCTRL2_set(set);
+	}
+#endif
+}
+
+static int hackkit_get_mctrl(struct uart_port *port)
+{
+	u_int ret = 0;
+#if 0
+	u_int irqsr = PT_IRQSR;
+
+	/* need 2 reads to read current value */
+	irqsr = PT_IRQSR;
+
+	/* TODO: check IRQ source register for modem/com
+	 status lines and set them correctly. */
+#endif
+
+	ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
+
+	return ret;
+}
+
+static int __init hackkit_init(void)
+{
+	int ret = 0;
+	DPRINTK( "%s\n", "START" );
+
+	if ( !machine_is_hackkit() ) {
+		ret = -EINVAL;
+		goto DONE;
+	}
+
+	hackkit_init_irq();
+
+	ret = 0;
+DONE:
+	DPRINTK( "ret=%d\n", ret );
+	return ret;
+}
+
+/**********************************************************************
+ *  Exported Functions
+ */
+
+/**********************************************************************
+ *  kernel magic macros
+ */
+__initcall(hackkit_init);
+
+MACHINE_START(HACKKIT, "HackKit Cpu Board")
+	BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
+	BOOT_PARAMS(0xc0000100)
+	FIXUP(fixup_hackkit)
+	MAPIO(hackkit_map_io)
+	INITIRQ(sa1100_init_irq)
+MACHINE_END