/* mach-hmt.c - Platform code for Airgoo HMT * * Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ #include <linux/kernel.h> #include <linux/init.h> #include <linux/serial_core.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/i2c.h> #include <linux/fb.h> #include <linux/gpio.h> #include <linux/delay.h> #include <linux/leds.h> #include <linux/pwm_backlight.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/irq.h> #include <mach/hardware.h> #include <mach/regs-fb.h> #include <mach/map.h> #include <asm/irq.h> #include <asm/mach-types.h> #include <plat/regs-serial.h> #include <plat/iic.h> #include <plat/fb.h> #include <plat/nand.h> #include <mach/s3c6410.h> #include <plat/clock.h> #include <plat/devs.h> #include <plat/cpu.h> #define UCON S3C2410_UCON_DEFAULT #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE) #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE) static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = { [0] = { .hwport = 0, .flags = 0, .ucon = UCON, .ulcon = ULCON, .ufcon = UFCON, }, [1] = { .hwport = 1, .flags = 0, .ucon = UCON, .ulcon = ULCON, .ufcon = UFCON, }, [2] = { .hwport = 2, .flags = 0, .ucon = UCON, .ulcon = ULCON, .ufcon = UFCON, }, }; static int hmt_bl_init(struct device *dev) { int ret; ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable"); if (!ret) ret = gpio_direction_output(S3C64XX_GPB(4), 0); return ret; } static int hmt_bl_notify(struct device *dev, int brightness) { /* * translate from CIELUV/CIELAB L*->brightness, E.G. from * perceived luminance to light output. Assumes range 0..25600 */ if (brightness < 0x800) { /* Y = Yn * L / 903.3 */ brightness = (100*256 * brightness + 231245/2) / 231245; } else { /* Y = Yn * ((L + 16) / 116 )^3 */ int t = (brightness*4 + 16*1024 + 58)/116; brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000); } gpio_set_value(S3C64XX_GPB(4), brightness); return brightness; } static void hmt_bl_exit(struct device *dev) { gpio_free(S3C64XX_GPB(4)); } static struct platform_pwm_backlight_data hmt_backlight_data = { .pwm_id = 1, .max_brightness = 100 * 256, .dft_brightness = 40 * 256, .pwm_period_ns = 1000000000 / (100 * 256 * 20), .init = hmt_bl_init, .notify = hmt_bl_notify, .exit = hmt_bl_exit, }; static struct platform_device hmt_backlight_device = { .name = "pwm-backlight", .dev = { .parent = &s3c_device_timer[1].dev, .platform_data = &hmt_backlight_data, }, }; static struct s3c_fb_pd_win hmt_fb_win0 = { .win_mode = { .left_margin = 8, .right_margin = 13, .upper_margin = 7, .lower_margin = 5, .hsync_len = 3, .vsync_len = 1, .xres = 800, .yres = 480, }, .max_bpp = 32, .default_bpp = 16, }; /* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */ static struct s3c_fb_platdata hmt_lcd_pdata __initdata = { .setup_gpio = s3c64xx_fb_gpio_setup_24bpp, .win[0] = &hmt_fb_win0, .vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB, .vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC, }; static struct mtd_partition hmt_nand_part[] = { [0] = { .name = "uboot", .size = SZ_512K, .offset = 0, }, [1] = { .name = "uboot-env1", .size = SZ_256K, .offset = SZ_512K, }, [2] = { .name = "uboot-env2", .size = SZ_256K, .offset = SZ_512K + SZ_256K, }, [3] = { .name = "kernel", .size = SZ_2M, .offset = SZ_1M, }, [4] = { .name = "rootfs", .size = MTDPART_SIZ_FULL, .offset = SZ_1M + SZ_2M, }, }; static struct s3c2410_nand_set hmt_nand_sets[] = { [0] = { .name = "nand", .nr_chips = 1, .nr_partitions = ARRAY_SIZE(hmt_nand_part), .partitions = hmt_nand_part, }, }; static struct s3c2410_platform_nand hmt_nand_info = { .tacls = 25, .twrph0 = 55, .twrph1 = 40, .nr_sets = ARRAY_SIZE(hmt_nand_sets), .sets = hmt_nand_sets, }; static struct gpio_led hmt_leds[] = { { /* left function keys */ .name = "left:blue", .gpio = S3C64XX_GPO(12), .default_trigger = "default-on", }, { /* right function keys - red */ .name = "right:red", .gpio = S3C64XX_GPO(13), }, { /* right function keys - green */ .name = "right:green", .gpio = S3C64XX_GPO(14), }, { /* right function keys - blue */ .name = "right:blue", .gpio = S3C64XX_GPO(15), .default_trigger = "default-on", }, }; static struct gpio_led_platform_data hmt_led_data = { .num_leds = ARRAY_SIZE(hmt_leds), .leds = hmt_leds, }; static struct platform_device hmt_leds_device = { .name = "leds-gpio", .id = -1, .dev.platform_data = &hmt_led_data, }; static struct map_desc hmt_iodesc[] = {}; static struct platform_device *hmt_devices[] __initdata = { &s3c_device_i2c0, &s3c_device_nand, &s3c_device_fb, &s3c_device_ohci, &s3c_device_timer[1], &hmt_backlight_device, &hmt_leds_device, }; static void __init hmt_map_io(void) { s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc)); s3c24xx_init_clocks(12000000); s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs)); } static void __init hmt_machine_init(void) { s3c_i2c0_set_platdata(NULL); s3c_fb_set_platdata(&hmt_lcd_pdata); s3c_nand_set_platdata(&hmt_nand_info); gpio_request(S3C64XX_GPC(7), "usb power"); gpio_direction_output(S3C64XX_GPC(7), 0); gpio_request(S3C64XX_GPM(0), "usb power"); gpio_direction_output(S3C64XX_GPM(0), 1); gpio_request(S3C64XX_GPK(7), "usb power"); gpio_direction_output(S3C64XX_GPK(7), 1); gpio_request(S3C64XX_GPF(13), "usb power"); gpio_direction_output(S3C64XX_GPF(13), 1); platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices)); } MACHINE_START(HMT, "Airgoo-HMT") /* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */ .boot_params = S3C64XX_PA_SDRAM + 0x100, .init_irq = s3c6410_init_irq, .map_io = hmt_map_io, .init_machine = hmt_machine_init, .timer = &s3c24xx_timer, MACHINE_END