1 /* mach-hmt.c - Platform code for Airgoo HMT
3 * Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
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.
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/serial_core.h>
14 #include <linux/platform_device.h>
16 #include <linux/i2c.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>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/map.h>
27 #include <asm/mach/irq.h>
29 #include <mach/hardware.h>
32 #include <asm/hardware/vic.h>
34 #include <asm/mach-types.h>
36 #include <plat/regs-serial.h>
39 #include <plat/nand.h>
41 #include <plat/clock.h>
42 #include <plat/devs.h>
44 #include <plat/regs-fb-v4.h>
48 #define UCON S3C2410_UCON_DEFAULT
49 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
50 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
52 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
76 static int hmt_bl_init(struct device *dev)
80 ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
82 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
87 static int hmt_bl_notify(struct device *dev, int brightness)
90 * translate from CIELUV/CIELAB L*->brightness, E.G. from
91 * perceived luminance to light output. Assumes range 0..25600
93 if (brightness < 0x800) {
94 /* Y = Yn * L / 903.3 */
95 brightness = (100*256 * brightness + 231245/2) / 231245;
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);
102 gpio_set_value(S3C64XX_GPB(4), brightness);
107 static void hmt_bl_exit(struct device *dev)
109 gpio_free(S3C64XX_GPB(4));
112 static struct platform_pwm_backlight_data hmt_backlight_data = {
114 .max_brightness = 100 * 256,
115 .dft_brightness = 40 * 256,
116 .pwm_period_ns = 1000000000 / (100 * 256 * 20),
118 .notify = hmt_bl_notify,
123 static struct platform_device hmt_backlight_device = {
124 .name = "pwm-backlight",
126 .parent = &s3c_device_timer[1].dev,
127 .platform_data = &hmt_backlight_data,
131 static struct s3c_fb_pd_win hmt_fb_win0 = {
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,
154 static struct mtd_partition hmt_nand_part[] = {
161 .name = "uboot-env1",
166 .name = "uboot-env2",
168 .offset = SZ_512K + SZ_256K,
177 .size = MTDPART_SIZ_FULL,
178 .offset = SZ_1M + SZ_2M,
182 static struct s3c2410_nand_set hmt_nand_sets[] = {
186 .nr_partitions = ARRAY_SIZE(hmt_nand_part),
187 .partitions = hmt_nand_part,
191 static struct s3c2410_platform_nand hmt_nand_info = {
195 .nr_sets = ARRAY_SIZE(hmt_nand_sets),
196 .sets = hmt_nand_sets,
199 static struct gpio_led hmt_leds[] = {
200 { /* left function keys */
202 .gpio = S3C64XX_GPO(12),
203 .default_trigger = "default-on",
205 { /* right function keys - red */
207 .gpio = S3C64XX_GPO(13),
209 { /* right function keys - green */
210 .name = "right:green",
211 .gpio = S3C64XX_GPO(14),
213 { /* right function keys - blue */
214 .name = "right:blue",
215 .gpio = S3C64XX_GPO(15),
216 .default_trigger = "default-on",
220 static struct gpio_led_platform_data hmt_led_data = {
221 .num_leds = ARRAY_SIZE(hmt_leds),
225 static struct platform_device hmt_leds_device = {
228 .dev.platform_data = &hmt_led_data,
231 static struct map_desc hmt_iodesc[] = {};
233 static struct platform_device *hmt_devices[] __initdata = {
238 &s3c_device_timer[1],
239 &hmt_backlight_device,
243 static void __init hmt_map_io(void)
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));
250 static void __init hmt_machine_init(void)
252 s3c_i2c0_set_platdata(NULL);
253 s3c_fb_set_platdata(&hmt_lcd_pdata);
254 s3c_nand_set_platdata(&hmt_nand_info);
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);
265 platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
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,