arch/arm/mach-s5p64x0/mach-smdk6440.c

   1 /* linux/arch/arm/mach-s5p64x0/mach-smdk6440.c
   2  *
   3  * Copyright (c) 2009-2010 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/s5p6440.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 SMDK6440_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 SMDK6440_ULCON_DEFAULT  S3C2410_LCON_CS8
  57
  58 #define SMDK6440_UFCON_DEFAULT  (S3C2410_UFCON_FIFOMODE |       \
  59                                 S3C2440_UFCON_TXTRIG16 |        \
  60                                 S3C2410_UFCON_RXTRIG8)
  61
  62 static struct s3c2410_uartcfg smdk6440_uartcfgs[] __initdata = {
  63         [0] = {
  64                 .hwport         = 0,
  65                 .flags          = 0,
  66                 .ucon           = SMDK6440_UCON_DEFAULT,
  67                 .ulcon          = SMDK6440_ULCON_DEFAULT,
  68                 .ufcon          = SMDK6440_UFCON_DEFAULT,
  69         },
  70         [1] = {
  71                 .hwport         = 1,
  72                 .flags          = 0,
  73                 .ucon           = SMDK6440_UCON_DEFAULT,
  74                 .ulcon          = SMDK6440_ULCON_DEFAULT,
  75                 .ufcon          = SMDK6440_UFCON_DEFAULT,
  76         },
  77         [2] = {
  78                 .hwport         = 2,
  79                 .flags          = 0,
  80                 .ucon           = SMDK6440_UCON_DEFAULT,
  81                 .ulcon          = SMDK6440_ULCON_DEFAULT,
  82                 .ufcon          = SMDK6440_UFCON_DEFAULT,
  83         },
  84         [3] = {
  85                 .hwport         = 3,
  86                 .flags          = 0,
  87                 .ucon           = SMDK6440_UCON_DEFAULT,
  88                 .ulcon          = SMDK6440_ULCON_DEFAULT,
  89                 .ufcon          = SMDK6440_UFCON_DEFAULT,
  90         },
  91 };
  92
  93 static int smdk6440_backlight_init(struct device *dev)
  94 {
  95         int ret;
  96
  97         ret = gpio_request(S5P6440_GPF(15), "Backlight");
  98         if (ret) {
  99                 printk(KERN_ERR "failed to request GPF for PWM-OUT1\n");
 100                 return ret;
 101         }
 102
 103         /* Configure GPIO pin with S5P6440_GPF15_PWM_TOUT1 */
 104         s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_SFN(2));
 105
 106         return 0;
 107 }
 108
 109 static void smdk6440_backlight_exit(struct device *dev)
 110 {
 111         s3c_gpio_cfgpin(S5P6440_GPF(15), S3C_GPIO_OUTPUT);
 112         gpio_free(S5P6440_GPF(15));
 113 }
 114
 115 static struct platform_pwm_backlight_data smdk6440_backlight_data = {
 116         .pwm_id         = 1,
 117         .max_brightness = 255,
 118         .dft_brightness = 255,
 119         .pwm_period_ns  = 78770,
 120         .init           = smdk6440_backlight_init,
 121         .exit           = smdk6440_backlight_exit,
 122 };
 123
 124 static struct platform_device smdk6440_backlight_device = {
 125         .name           = "pwm-backlight",
 126         .dev            = {
 127                 .parent         = &s3c_device_timer[1].dev,
 128                 .platform_data  = &smdk6440_backlight_data,
 129         },
 130 };
 131
 132 static struct platform_device *smdk6440_devices[] __initdata = {
 133         &s3c_device_adc,
 134         &s3c_device_rtc,
 135         &s3c_device_i2c0,
 136         &s3c_device_i2c1,
 137         &s3c_device_ts,
 138         &s3c_device_wdt,
 139         &samsung_asoc_dma,
 140         &s5p6440_device_iis,
 141         &s3c_device_timer[1],
 142         &smdk6440_backlight_device,
 143 };
 144
 145 static struct s3c2410_platform_i2c s5p6440_i2c0_data __initdata = {
 146         .flags          = 0,
 147         .slave_addr     = 0x10,
 148         .frequency      = 100*1000,
 149         .sda_delay      = 100,
 150         .cfg_gpio       = s5p6440_i2c0_cfg_gpio,
 151 };
 152
 153 static struct s3c2410_platform_i2c s5p6440_i2c1_data __initdata = {
 154         .flags          = 0,
 155         .bus_num        = 1,
 156         .slave_addr     = 0x10,
 157         .frequency      = 100*1000,
 158         .sda_delay      = 100,
 159         .cfg_gpio       = s5p6440_i2c1_cfg_gpio,
 160 };
 161
 162 static struct i2c_board_info smdk6440_i2c_devs0[] __initdata = {
 163         { I2C_BOARD_INFO("24c08", 0x50), },
 164         { I2C_BOARD_INFO("wm8580", 0x1b), },
 165 };
 166
 167 static struct i2c_board_info smdk6440_i2c_devs1[] __initdata = {
 168         /* To be populated */
 169 };
 170
 171 static struct s3c2410_ts_mach_info s3c_ts_platform __initdata = {
 172         .delay                  = 10000,
 173         .presc                  = 49,
 174         .oversampling_shift     = 2,
 175 };
 176
 177 static void __init smdk6440_map_io(void)
 178 {
 179         s5p_init_io(NULL, 0, S5P64X0_SYS_ID);
 180         s3c24xx_init_clocks(12000000);
 181         s3c24xx_init_uarts(smdk6440_uartcfgs, ARRAY_SIZE(smdk6440_uartcfgs));
 182 }
 183
 184 static void __init smdk6440_machine_init(void)
 185 {
 186         s3c24xx_ts_set_platdata(&s3c_ts_platform);
 187
 188         s3c_i2c0_set_platdata(&s5p6440_i2c0_data);
 189         s3c_i2c1_set_platdata(&s5p6440_i2c1_data);
 190         i2c_register_board_info(0, smdk6440_i2c_devs0,
 191                         ARRAY_SIZE(smdk6440_i2c_devs0));
 192         i2c_register_board_info(1, smdk6440_i2c_devs1,
 193                         ARRAY_SIZE(smdk6440_i2c_devs1));
 194
 195         platform_add_devices(smdk6440_devices, ARRAY_SIZE(smdk6440_devices));
 196 }
 197
 198 MACHINE_START(SMDK6440, "SMDK6440")
 199         /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
 200         .boot_params    = S5P64X0_PA_SDRAM + 0x100,
 201
 202         .init_irq       = s5p6440_init_irq,
 203         .map_io         = smdk6440_map_io,
 204         .init_machine   = smdk6440_machine_init,
 205         .timer          = &s3c24xx_timer,
 206 MACHINE_END