arch/arm/mach-s5p64x0/mach-smdk6450.c

   1 /* linux/arch/arm/mach-s5p64x0/mach-smdk6450.c
   2  *
   3  * Copyright (c) 2010 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9 */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/list.h>
  15 #include <linux/timer.h>
  16 #include <linux/delay.h>
  17 #include <linux/init.h>
  18 #include <linux/i2c.h>
  19 #include <linux/serial_core.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/io.h>
  22 #include <linux/module.h>
  23 #include <linux/clk.h>
  24 #include <linux/gpio.h>
  25 #include <linux/pwm_backlight.h>
  26
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/irq.h>
  30 #include <asm/mach-types.h>
  31
  32 #include <mach/hardware.h>
  33 #include <mach/map.h>
  34 #include <mach/regs-clock.h>
  35 #include <mach/i2c.h>
  36 #include <mach/regs-gpio.h>
  37
  38 #include <plat/regs-serial.h>
  39 #include <plat/gpio-cfg.h>
  40 #include <plat/s5p6450.h>
  41 #include <plat/clock.h>
  42 #include <plat/devs.h>
  43 #include <plat/cpu.h>
  44 #include <plat/iic.h>
  45 #include <plat/pll.h>
  46 #include <plat/adc.h>
  47 #include <plat/ts.h>
  48
  49 #define SMDK6450_UCON_DEFAULT   (S3C2410_UCON_TXILEVEL |        \
  50                                 S3C2410_UCON_RXILEVEL |         \
  51                                 S3C2410_UCON_TXIRQMODE |        \
  52                                 S3C2410_UCON_RXIRQMODE |        \
  53                                 S3C2410_UCON_RXFIFO_TOI |       \
  54                                 S3C2443_UCON_RXERR_IRQEN)
  55
  56 #define SMDK6450_ULCON_DEFAULT  S3C2410_LCON_CS8
  57
  58 #define SMDK6450_UFCON_DEFAULT  (S3C2410_UFCON_FIFOMODE |       \
  59                                 S3C2440_UFCON_TXTRIG16 |        \
  60                                 S3C2410_UFCON_RXTRIG8)
  61
  62 static struct s3c2410_uartcfg smdk6450_uartcfgs[] __initdata = {
  63         [0] = {
  64                 .hwport         = 0,
  65                 .flags          = 0,
  66                 .ucon           = SMDK6450_UCON_DEFAULT,
  67                 .ulcon          = SMDK6450_ULCON_DEFAULT,
  68                 .ufcon          = SMDK6450_UFCON_DEFAULT,
  69         },
  70         [1] = {
  71                 .hwport         = 1,
  72                 .flags          = 0,
  73                 .ucon           = SMDK6450_UCON_DEFAULT,
  74                 .ulcon          = SMDK6450_ULCON_DEFAULT,
  75                 .ufcon          = SMDK6450_UFCON_DEFAULT,
  76         },
  77         [2] = {
  78                 .hwport         = 2,
  79                 .flags          = 0,
  80                 .ucon           = SMDK6450_UCON_DEFAULT,
  81                 .ulcon          = SMDK6450_ULCON_DEFAULT,
  82                 .ufcon          = SMDK6450_UFCON_DEFAULT,
  83         },
  84         [3] = {
  85                 .hwport         = 3,
  86                 .flags          = 0,
  87                 .ucon           = SMDK6450_UCON_DEFAULT,
  88                 .ulcon          = SMDK6450_ULCON_DEFAULT,
  89                 .ufcon          = SMDK6450_UFCON_DEFAULT,
  90         },
  91 #if CONFIG_SERIAL_SAMSUNG_UARTS > 4
  92         [4] = {
  93                 .hwport         = 4,
  94                 .flags          = 0,
  95                 .ucon           = SMDK6450_UCON_DEFAULT,
  96                 .ulcon          = SMDK6450_ULCON_DEFAULT,
  97                 .ufcon          = SMDK6450_UFCON_DEFAULT,
  98         },
  99 #endif
 100 #if CONFIG_SERIAL_SAMSUNG_UARTS > 5
 101         [5] = {
 102                 .hwport         = 5,
 103                 .flags          = 0,
 104                 .ucon           = SMDK6450_UCON_DEFAULT,
 105                 .ulcon          = SMDK6450_ULCON_DEFAULT,
 106                 .ufcon          = SMDK6450_UFCON_DEFAULT,
 107         },
 108 #endif
 109 };
 110
 111 static int smdk6450_backlight_init(struct device *dev)
 112 {
 113         int ret;
 114
 115         ret = gpio_request(S5P6450_GPF(15), "Backlight");
 116         if (ret) {
 117                 printk(KERN_ERR "failed to request GPF for PWM-OUT1\n");
 118                 return ret;
 119         }
 120
 121         /* Configure GPIO pin with S5P6450_GPF15_PWM_TOUT1 */
 122         s3c_gpio_cfgpin(S5P6450_GPF(15), S3C_GPIO_SFN(2));
 123
 124         return 0;
 125 }
 126
 127 static void smdk6450_backlight_exit(struct device *dev)
 128 {
 129         s3c_gpio_cfgpin(S5P6450_GPF(15), S3C_GPIO_OUTPUT);
 130         gpio_free(S5P6450_GPF(15));
 131 }
 132
 133 static struct platform_pwm_backlight_data smdk6450_backlight_data = {
 134         .pwm_id         = 1,
 135         .max_brightness = 255,
 136         .dft_brightness = 255,
 137         .pwm_period_ns  = 78770,
 138         .init           = smdk6450_backlight_init,
 139         .exit           = smdk6450_backlight_exit,
 140 };
 141
 142 static struct platform_device smdk6450_backlight_device = {
 143         .name           = "pwm-backlight",
 144         .dev            = {
 145                 .parent         = &s3c_device_timer[1].dev,
 146                 .platform_data  = &smdk6450_backlight_data,
 147         },
 148 };
 149
 150 static struct platform_device *smdk6450_devices[] __initdata = {
 151         &s3c_device_adc,
 152         &s3c_device_rtc,
 153         &s3c_device_i2c0,
 154         &s3c_device_i2c1,
 155         &s3c_device_ts,
 156         &s3c_device_wdt,
 157         &samsung_asoc_dma,
 158         &s5p6450_device_iis0,
 159         &s3c_device_timer[1],
 160         &smdk6450_backlight_device,
 161         /* s5p6450_device_spi0 will be added */
 162 };
 163
 164 static struct s3c2410_platform_i2c s5p6450_i2c0_data __initdata = {
 165         .flags          = 0,
 166         .slave_addr     = 0x10,
 167         .frequency      = 100*1000,
 168         .sda_delay      = 100,
 169         .cfg_gpio       = s5p6450_i2c0_cfg_gpio,
 170 };
 171
 172 static struct s3c2410_platform_i2c s5p6450_i2c1_data __initdata = {
 173         .flags          = 0,
 174         .bus_num        = 1,
 175         .slave_addr     = 0x10,
 176         .frequency      = 100*1000,
 177         .sda_delay      = 100,
 178         .cfg_gpio       = s5p6450_i2c1_cfg_gpio,
 179 };
 180
 181 static struct i2c_board_info smdk6450_i2c_devs0[] __initdata = {
 182         { I2C_BOARD_INFO("wm8580", 0x1b), },
 183         { I2C_BOARD_INFO("24c08", 0x50), },     /* Samsung KS24C080C EEPROM */
 184 };
 185
 186 static struct i2c_board_info smdk6450_i2c_devs1[] __initdata = {
 187         { I2C_BOARD_INFO("24c128", 0x57), },/* Samsung S524AD0XD1 EEPROM */
 188 };
 189
 190 static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
 191         .delay                  = 10000,
 192         .presc                  = 49,
 193         .oversampling_shift     = 2,
 194 };
 195
 196 static void __init smdk6450_map_io(void)
 197 {
 198         s5p_init_io(NULL, 0, S5P64X0_SYS_ID);
 199         s3c24xx_init_clocks(19200000);
 200         s3c24xx_init_uarts(smdk6450_uartcfgs, ARRAY_SIZE(smdk6450_uartcfgs));
 201 }
 202
 203 static void __init smdk6450_machine_init(void)
 204 {
 205         s3c24xx_ts_set_platdata(&s3c_ts_platform);
 206
 207         s3c_i2c0_set_platdata(&s5p6450_i2c0_data);
 208         s3c_i2c1_set_platdata(&s5p6450_i2c1_data);
 209         i2c_register_board_info(0, smdk6450_i2c_devs0,
 210                         ARRAY_SIZE(smdk6450_i2c_devs0));
 211         i2c_register_board_info(1, smdk6450_i2c_devs1,
 212                         ARRAY_SIZE(smdk6450_i2c_devs1));
 213
 214         platform_add_devices(smdk6450_devices, ARRAY_SIZE(smdk6450_devices));
 215 }
 216
 217 MACHINE_START(SMDK6450, "SMDK6450")
 218         /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
 219         .boot_params    = S5P64X0_PA_SDRAM + 0x100,
 220
 221         .init_irq       = s5p6450_init_irq,
 222         .map_io         = smdk6450_map_io,
 223         .init_machine   = smdk6450_machine_init,
 224         .timer          = &s3c24xx_timer,
 225 MACHINE_END