Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] [ 2.6.31.13 ] Architecture: [ i386 ]
  1 /* linux/arch/arm/mach-s3c2412/mach-smdk2413.c
  2  *
  3  * Copyright (c) 2006 Simtec Electronics
  4  *      Ben Dooks <ben@simtec.co.uk>
  5  *
  6  * Thanks to Dimity Andric (TomTom) and Steven Ryu (Samsung) for the
  7  * loans of SMDK2413 to work with.
  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/kernel.h>
 15 #include <linux/types.h>
 16 #include <linux/interrupt.h>
 17 #include <linux/list.h>
 18 #include <linux/timer.h>
 19 #include <linux/init.h>
 20 #include <linux/serial_core.h>
 21 #include <linux/platform_device.h>
 22 
 23 #include <asm/mach/arch.h>
 24 #include <asm/mach/map.h>
 25 #include <asm/mach/irq.h>
 26 
 27 #include <asm/hardware.h>
 28 #include <asm/hardware/iomd.h>
 29 #include <asm/setup.h>
 30 #include <asm/io.h>
 31 #include <asm/irq.h>
 32 #include <asm/mach-types.h>
 33 
 34 //#include <asm/debug-ll.h>
 35 #include <asm/plat-s3c/regs-serial.h>
 36 #include <asm/arch/regs-gpio.h>
 37 #include <asm/arch/regs-lcd.h>
 38 
 39 #include <asm/arch/idle.h>
 40 #include <asm/plat-s3c24xx/udc.h>
 41 #include <asm/arch/fb.h>
 42 
 43 #include <asm/plat-s3c24xx/s3c2410.h>
 44 #include <asm/plat-s3c24xx/s3c2412.h>
 45 #include <asm/plat-s3c24xx/clock.h>
 46 #include <asm/plat-s3c24xx/devs.h>
 47 #include <asm/plat-s3c24xx/cpu.h>
 48 
 49 #include <asm/plat-s3c24xx/common-smdk.h>
 50 
 51 static struct map_desc smdk2413_iodesc[] __initdata = {
 52 };
 53 
 54 static struct s3c2410_uartcfg smdk2413_uartcfgs[] __initdata = {
 55         [0] = {
 56                 .hwport      = 0,
 57                 .flags       = 0,
 58                 .ucon        = 0x3c5,
 59                 .ulcon       = 0x03,
 60                 .ufcon       = 0x51,
 61         },
 62         [1] = {
 63                 .hwport      = 1,
 64                 .flags       = 0,
 65                 .ucon        = 0x3c5,
 66                 .ulcon       = 0x03,
 67                 .ufcon       = 0x51,
 68         },
 69         /* IR port */
 70         [2] = {
 71                 .hwport      = 2,
 72                 .flags       = 0,
 73                 .ucon        = 0x3c5,
 74                 .ulcon       = 0x43,
 75                 .ufcon       = 0x51,
 76         }
 77 };
 78 
 79 static void smdk2413_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 80 {
 81         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 82 
 83         switch (cmd)
 84         {
 85                 case S3C2410_UDC_P_ENABLE :
 86                         s3c2410_gpio_setpin(S3C2410_GPF2, 1);
 87                         break;
 88                 case S3C2410_UDC_P_DISABLE :
 89                         s3c2410_gpio_setpin(S3C2410_GPF2, 0);
 90                         break;
 91                 case S3C2410_UDC_P_RESET :
 92                         break;
 93                 default:
 94                         break;
 95         }
 96 }
 97 
 98 
 99 static struct s3c2410_udc_mach_info smdk2413_udc_cfg __initdata = {
100         .udc_command            = smdk2413_udc_pullup,
101 };
102 
103 
104 static struct platform_device *smdk2413_devices[] __initdata = {
105         &s3c_device_usb,
106         //&s3c_device_lcd,
107         &s3c_device_wdt,
108         &s3c_device_i2c,
109         &s3c_device_iis,
110         &s3c_device_usbgadget,
111 };
112 
113 static void __init smdk2413_fixup(struct machine_desc *desc,
114                                   struct tag *tags, char **cmdline,
115                                   struct meminfo *mi)
116 {
117         if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) {
118                 mi->nr_banks=1;
119                 mi->bank[0].start = 0x30000000;
120                 mi->bank[0].size = SZ_64M;
121                 mi->bank[0].node = 0;
122         }
123 }
124 
125 static void __init smdk2413_map_io(void)
126 {
127         s3c24xx_init_io(smdk2413_iodesc, ARRAY_SIZE(smdk2413_iodesc));
128         s3c24xx_init_clocks(12000000);
129         s3c24xx_init_uarts(smdk2413_uartcfgs, ARRAY_SIZE(smdk2413_uartcfgs));
130 }
131 
132 static void __init smdk2413_machine_init(void)
133 {       /* Turn off suspend on both USB ports, and switch the
134          * selectable USB port to USB device mode. */
135 
136         s3c2410_gpio_setpin(S3C2410_GPF2, 0);
137         s3c2410_gpio_cfgpin(S3C2410_GPF2, S3C2410_GPIO_OUTPUT);
138 
139         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
140                               S3C2410_MISCCR_USBSUSPND0 |
141                               S3C2410_MISCCR_USBSUSPND1, 0x0);
142 
143 
144         s3c24xx_udc_set_platdata(&smdk2413_udc_cfg);
145 
146         platform_add_devices(smdk2413_devices, ARRAY_SIZE(smdk2413_devices));
147         smdk_machine_init();
148 }
149 
150 MACHINE_START(S3C2413, "S3C2413")
151         /* Maintainer: Ben Dooks <ben@fluff.org> */
152         .phys_io        = S3C2410_PA_UART,
153         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
154         .boot_params    = S3C2410_SDRAM_PA + 0x100,
155 
156         .fixup          = smdk2413_fixup,
157         .init_irq       = s3c24xx_init_irq,
158         .map_io         = smdk2413_map_io,
159         .init_machine   = smdk2413_machine_init,
160         .timer          = &s3c24xx_timer,
161 MACHINE_END
162 
163 MACHINE_START(SMDK2412, "SMDK2412")
164         /* Maintainer: Ben Dooks <ben@fluff.org> */
165         .phys_io        = S3C2410_PA_UART,
166         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
167         .boot_params    = S3C2410_SDRAM_PA + 0x100,
168 
169         .fixup          = smdk2413_fixup,
170         .init_irq       = s3c24xx_init_irq,
171         .map_io         = smdk2413_map_io,
172         .init_machine   = smdk2413_machine_init,
173         .timer          = &s3c24xx_timer,
174 MACHINE_END
175 
176 MACHINE_START(SMDK2413, "SMDK2413")
177         /* Maintainer: Ben Dooks <ben@fluff.org> */
178         .phys_io        = S3C2410_PA_UART,
179         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
180         .boot_params    = S3C2410_SDRAM_PA + 0x100,
181 
182         .fixup          = smdk2413_fixup,
183         .init_irq       = s3c24xx_init_irq,
184         .map_io         = smdk2413_map_io,
185         .init_machine   = smdk2413_machine_init,
186         .timer          = &s3c24xx_timer,
187 MACHINE_END
188 
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