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 <video/samsung_fimd.h>
30 #include <mach/hardware.h>
34 #include <asm/mach-types.h>
36 #include <plat/regs-serial.h>
37 #include <linux/platform_data/i2c-s3c2410.h>
38 #include <mach/gpio-samsung.h>
40 #include <linux/platform_data/mtd-nand-s3c2410.h>
42 #include <plat/clock.h>
43 #include <plat/devs.h>
45 #include <plat/samsung-time.h>
49 #define UCON S3C2410_UCON_DEFAULT
50 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
51 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
53 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
77 static int hmt_bl_init(struct device *dev)
81 ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
83 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
88 static int hmt_bl_notify(struct device *dev, int brightness)
91 * translate from CIELUV/CIELAB L*->brightness, E.G. from
92 * perceived luminance to light output. Assumes range 0..25600
94 if (brightness < 0x800) {
95 /* Y = Yn * L / 903.3 */
96 brightness = (100*256 * brightness + 231245/2) / 231245;
98 /* Y = Yn * ((L + 16) / 116 )^3 */
99 int t = (brightness*4 + 16*1024 + 58)/116;
100 brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
103 gpio_set_value(S3C64XX_GPB(4), brightness);
108 static void hmt_bl_exit(struct device *dev)
110 gpio_free(S3C64XX_GPB(4));
113 static struct platform_pwm_backlight_data hmt_backlight_data = {
115 .max_brightness = 100 * 256,
116 .dft_brightness = 40 * 256,
117 .pwm_period_ns = 1000000000 / (100 * 256 * 20),
120 .notify = hmt_bl_notify,
125 static struct platform_device hmt_backlight_device = {
126 .name = "pwm-backlight",
128 .parent = &samsung_device_pwm.dev,
129 .platform_data = &hmt_backlight_data,
133 static struct s3c_fb_pd_win hmt_fb_win0 = {
140 static struct fb_videomode hmt_lcd_timing = {
151 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
152 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
153 .setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
154 .vtiming = &hmt_lcd_timing,
155 .win[0] = &hmt_fb_win0,
156 .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
157 .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
160 static struct mtd_partition hmt_nand_part[] = {
167 .name = "uboot-env1",
172 .name = "uboot-env2",
174 .offset = SZ_512K + SZ_256K,
183 .size = MTDPART_SIZ_FULL,
184 .offset = SZ_1M + SZ_2M,
188 static struct s3c2410_nand_set hmt_nand_sets[] = {
192 .nr_partitions = ARRAY_SIZE(hmt_nand_part),
193 .partitions = hmt_nand_part,
197 static struct s3c2410_platform_nand hmt_nand_info = {
201 .nr_sets = ARRAY_SIZE(hmt_nand_sets),
202 .sets = hmt_nand_sets,
205 static struct gpio_led hmt_leds[] = {
206 { /* left function keys */
208 .gpio = S3C64XX_GPO(12),
209 .default_trigger = "default-on",
211 { /* right function keys - red */
213 .gpio = S3C64XX_GPO(13),
215 { /* right function keys - green */
216 .name = "right:green",
217 .gpio = S3C64XX_GPO(14),
219 { /* right function keys - blue */
220 .name = "right:blue",
221 .gpio = S3C64XX_GPO(15),
222 .default_trigger = "default-on",
226 static struct gpio_led_platform_data hmt_led_data = {
227 .num_leds = ARRAY_SIZE(hmt_leds),
231 static struct platform_device hmt_leds_device = {
234 .dev.platform_data = &hmt_led_data,
237 static struct map_desc hmt_iodesc[] = {};
239 static struct platform_device *hmt_devices[] __initdata = {
245 &hmt_backlight_device,
249 static void __init hmt_map_io(void)
251 s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
252 s3c64xx_set_xtal_freq(12000000);
253 s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
254 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
257 static void __init hmt_machine_init(void)
259 s3c_i2c0_set_platdata(NULL);
260 s3c_fb_set_platdata(&hmt_lcd_pdata);
261 s3c_nand_set_platdata(&hmt_nand_info);
263 gpio_request(S3C64XX_GPC(7), "usb power");
264 gpio_direction_output(S3C64XX_GPC(7), 0);
265 gpio_request(S3C64XX_GPM(0), "usb power");
266 gpio_direction_output(S3C64XX_GPM(0), 1);
267 gpio_request(S3C64XX_GPK(7), "usb power");
268 gpio_direction_output(S3C64XX_GPK(7), 1);
269 gpio_request(S3C64XX_GPF(13), "usb power");
270 gpio_direction_output(S3C64XX_GPF(13), 1);
272 platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
275 MACHINE_START(HMT, "Airgoo-HMT")
276 /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
277 .atag_offset = 0x100,
278 .init_irq = s3c6410_init_irq,
279 .map_io = hmt_map_io,
280 .init_machine = hmt_machine_init,
281 .init_late = s3c64xx_init_late,
282 .init_time = samsung_timer_init,
283 .restart = s3c64xx_restart,