1 /*
2 * linux/arch/arm/mach-sa1100/hackkit.c
3 *
4 * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
5 *
6 * This file contains all HackKit tweaks. Based on original work from
7 * Nicolas Pitre's assabet fixes
8 *
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.
12 *
13 */
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/platform_data/sa11x0-serial.h>
22 #include <linux/serial_core.h>
23 #include <linux/mtd/mtd.h>
24 #include <linux/mtd/partitions.h>
25 #include <linux/tty.h>
26 #include <linux/gpio.h>
27 #include <linux/leds.h>
28 #include <linux/platform_device.h>
29
30 #include <asm/mach-types.h>
31 #include <asm/setup.h>
32 #include <asm/page.h>
33 #include <asm/pgtable.h>
34
35 #include <asm/mach/arch.h>
36 #include <asm/mach/flash.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/irq.h>
39
40 #include <mach/hardware.h>
41 #include <mach/irqs.h>
42
43 #include "generic.h"
44
45 /**********************************************************************
46 * prototypes
47 */
48
49 /* init funcs */
50 static void __init hackkit_map_io(void);
51
52 static u_int hackkit_get_mctrl(struct uart_port *port);
53 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
54 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
55
56 /**********************************************************************
57 * global data
58 */
59
60 /**********************************************************************
61 * static data
62 */
63
64 static struct map_desc hackkit_io_desc[] __initdata = {
65 { /* Flash bank 0 */
66 .virtual = 0xe8000000,
67 .pfn = __phys_to_pfn(0x00000000),
68 .length = 0x01000000,
69 .type = MT_DEVICE
70 },
71 };
72
73 static struct sa1100_port_fns hackkit_port_fns __initdata = {
74 .set_mctrl = hackkit_set_mctrl,
75 .get_mctrl = hackkit_get_mctrl,
76 .pm = hackkit_uart_pm,
77 };
78
79 /**********************************************************************
80 * Static functions
81 */
82
hackkit_map_io(void)83 static void __init hackkit_map_io(void)
84 {
85 sa1100_map_io();
86 iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
87
88 sa1100_register_uart_fns(&hackkit_port_fns);
89 sa1100_register_uart(0, 1); /* com port */
90 sa1100_register_uart(1, 2);
91 sa1100_register_uart(2, 3); /* radio module */
92
93 Ser1SDCR0 |= SDCR0_SUS;
94 }
95
96 /**
97 * hackkit_uart_pm - powermgmt callback function for system 3 UART
98 * @port: uart port structure
99 * @state: pm state
100 * @oldstate: old pm state
101 *
102 */
hackkit_uart_pm(struct uart_port * port,u_int state,u_int oldstate)103 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
104 {
105 /* TODO: switch on/off uart in powersave mode */
106 }
107
108 /*
109 * Note! this can be called from IRQ context.
110 * FIXME: No modem ctrl lines yet.
111 */
hackkit_set_mctrl(struct uart_port * port,u_int mctrl)112 static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
113 {
114 #if 0
115 if (port->mapbase == _Ser1UTCR0) {
116 u_int set = 0, clear = 0;
117
118 if (mctrl & TIOCM_RTS)
119 set |= PT_CTRL2_RS1_RTS;
120 else
121 clear |= PT_CTRL2_RS1_RTS;
122
123 if (mctrl & TIOCM_DTR)
124 set |= PT_CTRL2_RS1_DTR;
125 else
126 clear |= PT_CTRL2_RS1_DTR;
127
128 PTCTRL2_clear(clear);
129 PTCTRL2_set(set);
130 }
131 #endif
132 }
133
hackkit_get_mctrl(struct uart_port * port)134 static u_int hackkit_get_mctrl(struct uart_port *port)
135 {
136 u_int ret = 0;
137 #if 0
138 u_int irqsr = PT_IRQSR;
139
140 /* need 2 reads to read current value */
141 irqsr = PT_IRQSR;
142
143 /* TODO: check IRQ source register for modem/com
144 status lines and set them correctly. */
145 #endif
146
147 ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
148
149 return ret;
150 }
151
152 static struct mtd_partition hackkit_partitions[] = {
153 {
154 .name = "BLOB",
155 .size = 0x00040000,
156 .offset = 0x00000000,
157 .mask_flags = MTD_WRITEABLE, /* force read-only */
158 }, {
159 .name = "config",
160 .size = 0x00040000,
161 .offset = MTDPART_OFS_APPEND,
162 }, {
163 .name = "kernel",
164 .size = 0x00100000,
165 .offset = MTDPART_OFS_APPEND,
166 }, {
167 .name = "initrd",
168 .size = 0x00180000,
169 .offset = MTDPART_OFS_APPEND,
170 }, {
171 .name = "rootfs",
172 .size = 0x700000,
173 .offset = MTDPART_OFS_APPEND,
174 }, {
175 .name = "data",
176 .size = MTDPART_SIZ_FULL,
177 .offset = MTDPART_OFS_APPEND,
178 }
179 };
180
181 static struct flash_platform_data hackkit_flash_data = {
182 .map_name = "cfi_probe",
183 .parts = hackkit_partitions,
184 .nr_parts = ARRAY_SIZE(hackkit_partitions),
185 };
186
187 static struct resource hackkit_flash_resource =
188 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
189
190 /* LEDs */
191 struct gpio_led hackkit_gpio_leds[] = {
192 {
193 .name = "hackkit:red",
194 .default_trigger = "cpu0",
195 .gpio = 22,
196 },
197 {
198 .name = "hackkit:green",
199 .default_trigger = "heartbeat",
200 .gpio = 23,
201 },
202 };
203
204 static struct gpio_led_platform_data hackkit_gpio_led_info = {
205 .leds = hackkit_gpio_leds,
206 .num_leds = ARRAY_SIZE(hackkit_gpio_leds),
207 };
208
209 static struct platform_device hackkit_leds = {
210 .name = "leds-gpio",
211 .id = -1,
212 .dev = {
213 .platform_data = &hackkit_gpio_led_info,
214 }
215 };
216
hackkit_init(void)217 static void __init hackkit_init(void)
218 {
219 sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
220 platform_device_register(&hackkit_leds);
221 }
222
223 /**********************************************************************
224 * Exported Functions
225 */
226
227 MACHINE_START(HACKKIT, "HackKit Cpu Board")
228 .atag_offset = 0x100,
229 .map_io = hackkit_map_io,
230 .nr_irqs = SA1100_NR_IRQS,
231 .init_irq = sa1100_init_irq,
232 .init_time = sa1100_timer_init,
233 .init_machine = hackkit_init,
234 .init_late = sa11x0_init_late,
235 .restart = sa11x0_restart,
236 MACHINE_END
237