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>
39 #include <linux/platform_data/mtd-nand-s3c2410.h>
41 #include <plat/clock.h>
42 #include <plat/devs.h>
47 #define UCON S3C2410_UCON_DEFAULT
48 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
49 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
51 static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
75 static int hmt_bl_init(struct device *dev)
79 ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
81 ret = gpio_direction_output(S3C64XX_GPB(4), 0);
86 static int hmt_bl_notify(struct device *dev, int brightness)
89 * translate from CIELUV/CIELAB L*->brightness, E.G. from
90 * perceived luminance to light output. Assumes range 0..25600
92 if (brightness < 0x800) {
93 /* Y = Yn * L / 903.3 */
94 brightness = (100*256 * brightness + 231245/2) / 231245;
96 /* Y = Yn * ((L + 16) / 116 )^3 */
97 int t = (brightness*4 + 16*1024 + 58)/116;
98 brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
101 gpio_set_value(S3C64XX_GPB(4), brightness);
106 static void hmt_bl_exit(struct device *dev)
108 gpio_free(S3C64XX_GPB(4));
111 static struct platform_pwm_backlight_data hmt_backlight_data = {
113 .max_brightness = 100 * 256,
114 .dft_brightness = 40 * 256,
115 .pwm_period_ns = 1000000000 / (100 * 256 * 20),
117 .notify = hmt_bl_notify,
122 static struct platform_device hmt_backlight_device = {
123 .name = "pwm-backlight",
125 .parent = &s3c_device_timer[1].dev,
126 .platform_data = &hmt_backlight_data,
130 static struct s3c_fb_pd_win hmt_fb_win0 = {
137 static struct fb_videomode hmt_lcd_timing = {
148 /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
149 static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
150 .setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
151 .vtiming = &hmt_lcd_timing,
152 .win[0] = &hmt_fb_win0,
153 .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
154 .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
157 static struct mtd_partition hmt_nand_part[] = {
164 .name = "uboot-env1",
169 .name = "uboot-env2",
171 .offset = SZ_512K + SZ_256K,
180 .size = MTDPART_SIZ_FULL,
181 .offset = SZ_1M + SZ_2M,
185 static struct s3c2410_nand_set hmt_nand_sets[] = {
189 .nr_partitions = ARRAY_SIZE(hmt_nand_part),
190 .partitions = hmt_nand_part,
194 static struct s3c2410_platform_nand hmt_nand_info = {
198 .nr_sets = ARRAY_SIZE(hmt_nand_sets),
199 .sets = hmt_nand_sets,
202 static struct gpio_led hmt_leds[] = {
203 { /* left function keys */
205 .gpio = S3C64XX_GPO(12),
206 .default_trigger = "default-on",
208 { /* right function keys - red */
210 .gpio = S3C64XX_GPO(13),
212 { /* right function keys - green */
213 .name = "right:green",
214 .gpio = S3C64XX_GPO(14),
216 { /* right function keys - blue */
217 .name = "right:blue",
218 .gpio = S3C64XX_GPO(15),
219 .default_trigger = "default-on",
223 static struct gpio_led_platform_data hmt_led_data = {
224 .num_leds = ARRAY_SIZE(hmt_leds),
228 static struct platform_device hmt_leds_device = {
231 .dev.platform_data = &hmt_led_data,
234 static struct map_desc hmt_iodesc[] = {};
236 static struct platform_device *hmt_devices[] __initdata = {
241 &s3c_device_timer[1],
242 &hmt_backlight_device,
246 static void __init hmt_map_io(void)
248 s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
249 s3c24xx_init_clocks(12000000);
250 s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
253 static void __init hmt_machine_init(void)
255 s3c_i2c0_set_platdata(NULL);
256 s3c_fb_set_platdata(&hmt_lcd_pdata);
257 s3c_nand_set_platdata(&hmt_nand_info);
259 gpio_request(S3C64XX_GPC(7), "usb power");
260 gpio_direction_output(S3C64XX_GPC(7), 0);
261 gpio_request(S3C64XX_GPM(0), "usb power");
262 gpio_direction_output(S3C64XX_GPM(0), 1);
263 gpio_request(S3C64XX_GPK(7), "usb power");
264 gpio_direction_output(S3C64XX_GPK(7), 1);
265 gpio_request(S3C64XX_GPF(13), "usb power");
266 gpio_direction_output(S3C64XX_GPF(13), 1);
268 platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
271 MACHINE_START(HMT, "Airgoo-HMT")
272 /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
273 .atag_offset = 0x100,
274 .init_irq = s3c6410_init_irq,
275 .map_io = hmt_map_io,
276 .init_machine = hmt_machine_init,
277 .init_late = s3c64xx_init_late,
278 .init_time = s3c24xx_timer_init,
279 .restart = s3c64xx_restart,