2 * linux/arch/arm/mach-sa1100/hackkit.c
4 * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
6 * This file contains all HackKit tweaks. Based on original work from
7 * Nicolas Pitre's assabet fixes
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/init.h>
15 #include <linux/kernel.h>
16 #include <linux/sched.h>
17 #include <linux/tty.h>
18 #include <linux/module.h>
19 #include <linux/errno.h>
20 #include <linux/cpufreq.h>
21 #include <linux/serial_core.h>
23 #include <asm/hardware.h>
24 #include <asm/mach-types.h>
25 #include <asm/setup.h>
27 #include <asm/pgtable.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 #include <asm/mach/irq.h>
33 #include <asm/mach/serial_sa1100.h>
37 /**********************************************************************
42 static int __init hackkit_init(void);
43 static void __init hackkit_init_irq(void);
44 static void __init hackkit_map_io(void);
46 static u_int hackkit_get_mctrl(struct uart_port *port);
47 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
48 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
50 /**********************************************************************
54 /**********************************************************************
58 static struct map_desc hackkit_io_desc[] __initdata = {
59 /* virtual physical length type */
60 { 0xe8000000, 0x00000000, 0x01000000, MT_DEVICE } /* Flash bank 0 */
63 static struct sa1100_port_fns hackkit_port_fns __initdata = {
64 .set_mctrl = hackkit_set_mctrl,
65 .get_mctrl = hackkit_get_mctrl,
66 .pm = hackkit_uart_pm,
69 /**********************************************************************
73 static void __init hackkit_map_io(void)
76 iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
78 sa1100_register_uart_fns(&hackkit_port_fns);
79 sa1100_register_uart(0, 1); /* com port */
80 sa1100_register_uart(1, 2);
81 sa1100_register_uart(2, 3); /* radio module */
83 Ser1SDCR0 |= SDCR0_SUS;
86 static void __init hackkit_init_irq(void)
92 * hackkit_uart_pm - powermgmt callback function for system 3 UART
93 * @port: uart port structure
95 * @oldstate: old pm state
98 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
100 /* TODO: switch on/off uart in powersave mode */
104 * Note! this can be called from IRQ context.
105 * FIXME: No modem ctrl lines yet.
107 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
110 if (port->mapbase == _Ser1UTCR0) {
111 u_int set = 0, clear = 0;
113 if (mctrl & TIOCM_RTS)
114 set |= PT_CTRL2_RS1_RTS;
116 clear |= PT_CTRL2_RS1_RTS;
118 if (mctrl & TIOCM_DTR)
119 set |= PT_CTRL2_RS1_DTR;
121 clear |= PT_CTRL2_RS1_DTR;
123 PTCTRL2_clear(clear);
129 static u_int hackkit_get_mctrl(struct uart_port *port)
133 u_int irqsr = PT_IRQSR;
135 /* need 2 reads to read current value */
138 /* TODO: check IRQ source register for modem/com
139 status lines and set them correctly. */
142 ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
147 static int __init hackkit_init(void)
151 if ( !machine_is_hackkit() ) {
163 /**********************************************************************
167 /**********************************************************************
168 * kernel magic macros
170 arch_initcall(hackkit_init);
172 MACHINE_START(HACKKIT, "HackKit Cpu Board")
173 BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
174 BOOT_PARAMS(0xc0000100)
175 MAPIO(hackkit_map_io)
176 INITIRQ(sa1100_init_irq)
177 INITTIME(sa1100_init_time)