arch/arm/mach-s3c64xx/mach-hmt.c

   1 /* mach-hmt.c - Platform code for Airgoo HMT
   2  *
   3  * Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9 */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/serial_core.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16 #include <linux/i2c.h>
  17 #include <linux/fb.h>
  18 #include <linux/gpio.h>
  19 #include <linux/delay.h>
  20 #include <linux/leds.h>
  21 #include <linux/pwm_backlight.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.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 <mach/map.h>
  31
  32 #include <asm/hardware/vic.h>
  33 #include <asm/irq.h>
  34 #include <asm/mach-types.h>
  35
  36 #include <plat/regs-serial.h>
  37 #include <plat/iic.h>
  38 #include <plat/fb.h>
  39 #include <plat/nand.h>
  40
  41 #include <plat/clock.h>
  42 #include <plat/devs.h>
  43 #include <plat/cpu.h>
  44 #include <plat/regs-fb-v4.h>
  45
  46 #include "common.h"
  47
  48 #define UCON S3C2410_UCON_DEFAULT
  49 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  50 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  51
  52 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
  53         [0] = {
  54                 .hwport      = 0,
  55                 .flags       = 0,
  56                 .ucon        = UCON,
  57                 .ulcon       = ULCON,
  58                 .ufcon       = UFCON,
  59         },
  60         [1] = {
  61                 .hwport      = 1,
  62                 .flags       = 0,
  63                 .ucon        = UCON,
  64                 .ulcon       = ULCON,
  65                 .ufcon       = UFCON,
  66         },
  67         [2] = {
  68                 .hwport      = 2,
  69                 .flags       = 0,
  70                 .ucon        = UCON,
  71                 .ulcon       = ULCON,
  72                 .ufcon       = UFCON,
  73         },
  74 };
  75
  76 static int hmt_bl_init(struct device *dev)
  77 {
  78         int ret;
  79
  80         ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
  81         if (!ret)
  82                 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
  83
  84         return ret;
  85 }
  86
  87 static int hmt_bl_notify(struct device *dev, int brightness)
  88 {
  89         /*
  90          * translate from CIELUV/CIELAB L*->brightness, E.G. from
  91          * perceived luminance to light output. Assumes range 0..25600
  92          */
  93         if (brightness < 0x800) {
  94                 /* Y = Yn * L / 903.3 */
  95                 brightness = (100*256 * brightness + 231245/2) / 231245;
  96         } else {
  97                 /* Y = Yn * ((L + 16) / 116 )^3 */
  98                 int t = (brightness*4 + 16*1024 + 58)/116;
  99                 brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
 100         }
 101
 102         gpio_set_value(S3C64XX_GPB(4), brightness);
 103
 104         return brightness;
 105 }
 106
 107 static void hmt_bl_exit(struct device *dev)
 108 {
 109         gpio_free(S3C64XX_GPB(4));
 110 }
 111
 112 static struct platform_pwm_backlight_data hmt_backlight_data = {
 113         .pwm_id         = 1,
 114         .max_brightness = 100 * 256,
 115         .dft_brightness = 40 * 256,
 116         .pwm_period_ns  = 1000000000 / (100 * 256 * 20),
 117         .init           = hmt_bl_init,
 118         .notify         = hmt_bl_notify,
 119         .exit           = hmt_bl_exit,
 120
 121 };
 122
 123 static struct platform_device hmt_backlight_device = {
 124         .name           = "pwm-backlight",
 125         .dev            = {
 126                 .parent = &s3c_device_timer[1].dev,
 127                 .platform_data = &hmt_backlight_data,
 128         },
 129 };
 130
 131 static struct s3c_fb_pd_win hmt_fb_win0 = {
 132         .win_mode       = {
 133                 .left_margin    = 8,
 134                 .right_margin   = 13,
 135                 .upper_margin   = 7,
 136                 .lower_margin   = 5,
 137                 .hsync_len      = 3,
 138                 .vsync_len      = 1,
 139                 .xres           = 800,
 140                 .yres           = 480,
 141         },
 142         .max_bpp        = 32,
 143         .default_bpp    = 16,
 144 };
 145
 146 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
 147 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
 148         .setup_gpio     = s3c64xx_fb_gpio_setup_24bpp,
 149         .win[0]         = &hmt_fb_win0,
 150         .vidcon0        = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
 151         .vidcon1        = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
 152 };
 153
 154 static struct mtd_partition hmt_nand_part[] = {
 155         [0] = {
 156                 .name   = "uboot",
 157                 .size   = SZ_512K,
 158                 .offset = 0,
 159         },
 160         [1] = {
 161                 .name   = "uboot-env1",
 162                 .size   = SZ_256K,
 163                 .offset = SZ_512K,
 164         },
 165         [2] = {
 166                 .name   = "uboot-env2",
 167                 .size   = SZ_256K,
 168                 .offset = SZ_512K + SZ_256K,
 169         },
 170         [3] = {
 171                 .name   = "kernel",
 172                 .size   = SZ_2M,
 173                 .offset = SZ_1M,
 174         },
 175         [4] = {
 176                 .name   = "rootfs",
 177                 .size   = MTDPART_SIZ_FULL,
 178                 .offset = SZ_1M + SZ_2M,
 179         },
 180 };
 181
 182 static struct s3c2410_nand_set hmt_nand_sets[] = {
 183         [0] = {
 184                 .name           = "nand",
 185                 .nr_chips       = 1,
 186                 .nr_partitions  = ARRAY_SIZE(hmt_nand_part),
 187                 .partitions     = hmt_nand_part,
 188         },
 189 };
 190
 191 static struct s3c2410_platform_nand hmt_nand_info = {
 192         .tacls          = 25,
 193         .twrph0         = 55,
 194         .twrph1         = 40,
 195         .nr_sets        = ARRAY_SIZE(hmt_nand_sets),
 196         .sets           = hmt_nand_sets,
 197 };
 198
 199 static struct gpio_led hmt_leds[] = {
 200         { /* left function keys */
 201                 .name                   = "left:blue",
 202                 .gpio                   = S3C64XX_GPO(12),
 203                 .default_trigger        = "default-on",
 204         },
 205         { /* right function keys - red */
 206                 .name                   = "right:red",
 207                 .gpio                   = S3C64XX_GPO(13),
 208         },
 209         { /* right function keys - green */
 210                 .name                   = "right:green",
 211                 .gpio                   = S3C64XX_GPO(14),
 212         },
 213         { /* right function keys - blue */
 214                 .name                   = "right:blue",
 215                 .gpio                   = S3C64XX_GPO(15),
 216                 .default_trigger        = "default-on",
 217         },
 218 };
 219
 220 static struct gpio_led_platform_data hmt_led_data = {
 221         .num_leds = ARRAY_SIZE(hmt_leds),
 222         .leds = hmt_leds,
 223 };
 224
 225 static struct platform_device hmt_leds_device = {
 226         .name                   = "leds-gpio",
 227         .id                     = -1,
 228         .dev.platform_data      = &hmt_led_data,
 229 };
 230
 231 static struct map_desc hmt_iodesc[] = {};
 232
 233 static struct platform_device *hmt_devices[] __initdata = {
 234         &s3c_device_i2c0,
 235         &s3c_device_nand,
 236         &s3c_device_fb,
 237         &s3c_device_ohci,
 238         &s3c_device_timer[1],
 239         &hmt_backlight_device,
 240         &hmt_leds_device,
 241 };
 242
 243 static void __init hmt_map_io(void)
 244 {
 245         s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
 246         s3c24xx_init_clocks(12000000);
 247         s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
 248 }
 249
 250 static void __init hmt_machine_init(void)
 251 {
 252         s3c_i2c0_set_platdata(NULL);
 253         s3c_fb_set_platdata(&hmt_lcd_pdata);
 254         s3c_nand_set_platdata(&hmt_nand_info);
 255
 256         gpio_request(S3C64XX_GPC(7), "usb power");
 257         gpio_direction_output(S3C64XX_GPC(7), 0);
 258         gpio_request(S3C64XX_GPM(0), "usb power");
 259         gpio_direction_output(S3C64XX_GPM(0), 1);
 260         gpio_request(S3C64XX_GPK(7), "usb power");
 261         gpio_direction_output(S3C64XX_GPK(7), 1);
 262         gpio_request(S3C64XX_GPF(13), "usb power");
 263         gpio_direction_output(S3C64XX_GPF(13), 1);
 264
 265         platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
 266 }
 267
 268 MACHINE_START(HMT, "Airgoo-HMT")
 269         /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
 270         .atag_offset    = 0x100,
 271         .init_irq       = s3c6410_init_irq,
 272         .handle_irq     = vic_handle_irq,
 273         .map_io         = hmt_map_io,
 274         .init_machine   = hmt_machine_init,
 275         .timer          = &s3c24xx_timer,
 276         .restart        = s3c64xx_restart,
 277 MACHINE_END