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/gpio.h>
 21 #include <linux/serial_core.h>
 22 #include <linux/platform_device.h>
 23 #include <linux/io.h>
 24 
 25 #include <asm/mach/arch.h>
 26 #include <asm/mach/map.h>
 27 #include <asm/mach/irq.h>
 28 
 29 #include <mach/hardware.h>
 30 #include <asm/hardware/iomd.h>
 31 #include <asm/setup.h>
 32 #include <asm/irq.h>
 33 #include <asm/mach-types.h>
 34 
 35 //#include <asm/debug-ll.h>
 36 #include <plat/regs-serial.h>
 37 #include <mach/regs-gpio.h>
 38 #include <mach/regs-lcd.h>
 39 
 40 #include <mach/idle.h>
 41 #include <plat/udc.h>
 42 #include <plat/iic.h>
 43 #include <mach/fb.h>
 44 
 45 #include <plat/s3c2410.h>
 46 #include <plat/s3c2412.h>
 47 #include <plat/clock.h>
 48 #include <plat/devs.h>
 49 #include <plat/cpu.h>
 50 
 51 #include <plat/common-smdk.h>
 52 
 53 static struct map_desc smdk2413_iodesc[] __initdata = {
 54 };
 55 
 56 static struct s3c2410_uartcfg smdk2413_uartcfgs[] __initdata = {
 57         [0] = {
 58                 .hwport      = 0,
 59                 .flags       = 0,
 60                 .ucon        = 0x3c5,
 61                 .ulcon       = 0x03,
 62                 .ufcon       = 0x51,
 63         },
 64         [1] = {
 65                 .hwport      = 1,
 66                 .flags       = 0,
 67                 .ucon        = 0x3c5,
 68                 .ulcon       = 0x03,
 69                 .ufcon       = 0x51,
 70         },
 71         /* IR port */
 72         [2] = {
 73                 .hwport      = 2,
 74                 .flags       = 0,
 75                 .ucon        = 0x3c5,
 76                 .ulcon       = 0x43,
 77                 .ufcon       = 0x51,
 78         }
 79 };
 80 
 81 static void smdk2413_udc_pullup(enum s3c2410_udc_cmd_e cmd)
 82 {
 83         printk(KERN_DEBUG "udc: pullup(%d)\n",cmd);
 84 
 85         switch (cmd)
 86         {
 87                 case S3C2410_UDC_P_ENABLE :
 88                         s3c2410_gpio_setpin(S3C2410_GPF(2), 1);
 89                         break;
 90                 case S3C2410_UDC_P_DISABLE :
 91                         s3c2410_gpio_setpin(S3C2410_GPF(2), 0);
 92                         break;
 93                 case S3C2410_UDC_P_RESET :
 94                         break;
 95                 default:
 96                         break;
 97         }
 98 }
 99 
100 
101 static struct s3c2410_udc_mach_info smdk2413_udc_cfg __initdata = {
102         .udc_command            = smdk2413_udc_pullup,
103 };
104 
105 
106 static struct platform_device *smdk2413_devices[] __initdata = {
107         &s3c_device_usb,
108         //&s3c_device_lcd,
109         &s3c_device_wdt,
110         &s3c_device_i2c0,
111         &s3c_device_iis,
112         &s3c_device_usbgadget,
113 };
114 
115 static void __init smdk2413_fixup(struct machine_desc *desc,
116                                   struct tag *tags, char **cmdline,
117                                   struct meminfo *mi)
118 {
119         if (tags != phys_to_virt(S3C2410_SDRAM_PA + 0x100)) {
120                 mi->nr_banks=1;
121                 mi->bank[0].start = 0x30000000;
122                 mi->bank[0].size = SZ_64M;
123                 mi->bank[0].node = 0;
124         }
125 }
126 
127 static void __init smdk2413_map_io(void)
128 {
129         s3c24xx_init_io(smdk2413_iodesc, ARRAY_SIZE(smdk2413_iodesc));
130         s3c24xx_init_clocks(12000000);
131         s3c24xx_init_uarts(smdk2413_uartcfgs, ARRAY_SIZE(smdk2413_uartcfgs));
132 }
133 
134 static void __init smdk2413_machine_init(void)
135 {       /* Turn off suspend on both USB ports, and switch the
136          * selectable USB port to USB device mode. */
137 
138         s3c2410_gpio_setpin(S3C2410_GPF(2), 0);
139         s3c2410_gpio_cfgpin(S3C2410_GPF(2), S3C2410_GPIO_OUTPUT);
140 
141         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
142                               S3C2410_MISCCR_USBSUSPND0 |
143                               S3C2410_MISCCR_USBSUSPND1, 0x0);
144 
145 
146         s3c24xx_udc_set_platdata(&smdk2413_udc_cfg);
147         s3c_i2c0_set_platdata(NULL);
148 
149         platform_add_devices(smdk2413_devices, ARRAY_SIZE(smdk2413_devices));
150         smdk_machine_init();
151 }
152 
153 MACHINE_START(S3C2413, "S3C2413")
154         /* Maintainer: Ben Dooks <ben@fluff.org> */
155         .phys_io        = S3C2410_PA_UART,
156         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
157         .boot_params    = S3C2410_SDRAM_PA + 0x100,
158 
159         .fixup          = smdk2413_fixup,
160         .init_irq       = s3c24xx_init_irq,
161         .map_io         = smdk2413_map_io,
162         .init_machine   = smdk2413_machine_init,
163         .timer          = &s3c24xx_timer,
164 MACHINE_END
165 
166 MACHINE_START(SMDK2412, "SMDK2412")
167         /* Maintainer: Ben Dooks <ben@fluff.org> */
168         .phys_io        = S3C2410_PA_UART,
169         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
170         .boot_params    = S3C2410_SDRAM_PA + 0x100,
171 
172         .fixup          = smdk2413_fixup,
173         .init_irq       = s3c24xx_init_irq,
174         .map_io         = smdk2413_map_io,
175         .init_machine   = smdk2413_machine_init,
176         .timer          = &s3c24xx_timer,
177 MACHINE_END
178 
179 MACHINE_START(SMDK2413, "SMDK2413")
180         /* Maintainer: Ben Dooks <ben@fluff.org> */
181         .phys_io        = S3C2410_PA_UART,
182         .io_pg_offst    = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
183         .boot_params    = S3C2410_SDRAM_PA + 0x100,
184 
185         .fixup          = smdk2413_fixup,
186         .init_irq       = s3c24xx_init_irq,
187         .map_io         = smdk2413_map_io,
188         .init_machine   = smdk2413_machine_init,
189         .timer          = &s3c24xx_timer,
190 MACHINE_END
191 
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