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Linux/arch/arm/mach-sa1100/hackkit.c

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  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 
 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  */
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  */
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 
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 
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 

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