2896bda482
Add support for the Airgoo HMT (home media terminal) device. The HMT is a tablet device with a s3c6410, a 7" LCD and a number of peripheral connections. For more details of the hardware specs, see: http://article.gmane.org/gmane.linux.debian.devel.embedded/4307 Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> [ben-linux@fluff.org: subject rewrite] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
276 lines
6.2 KiB
C
276 lines
6.2 KiB
C
/* mach-hmt.c - Platform code for Airgoo HMT
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*
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* Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/serial_core.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/i2c.h>
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#include <linux/fb.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/leds.h>
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#include <linux/pwm_backlight.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/hardware.h>
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#include <mach/regs-fb.h>
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#include <mach/map.h>
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#include <asm/irq.h>
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#include <asm/mach-types.h>
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#include <plat/regs-serial.h>
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#include <plat/iic.h>
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#include <plat/fb.h>
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#include <plat/nand.h>
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#include <plat/s3c6410.h>
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#include <plat/clock.h>
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#include <plat/devs.h>
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#include <plat/cpu.h>
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#define UCON S3C2410_UCON_DEFAULT
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#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
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#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
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static struct s3c2410_uartcfg hmt_uartcfgs[] __initdata = {
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[0] = {
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.hwport = 0,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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},
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[1] = {
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.hwport = 1,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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},
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[2] = {
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.hwport = 2,
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.flags = 0,
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.ucon = UCON,
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.ulcon = ULCON,
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.ufcon = UFCON,
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},
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};
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static int hmt_bl_init(struct device *dev)
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{
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int ret;
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ret = gpio_request(S3C64XX_GPB(4), "lcd backlight enable");
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if (!ret)
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ret = gpio_direction_output(S3C64XX_GPB(4), 0);
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return ret;
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}
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static int hmt_bl_notify(int brightness)
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{
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/*
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* translate from CIELUV/CIELAB L*->brightness, E.G. from
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* perceived luminance to light output. Assumes range 0..25600
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*/
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if (brightness < 0x800) {
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/* Y = Yn * L / 903.3 */
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brightness = (100*256 * brightness + 231245/2) / 231245;
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} else {
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/* Y = Yn * ((L + 16) / 116 )^3 */
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int t = (brightness*4 + 16*1024 + 58)/116;
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brightness = 25 * ((t * t * t + 0x100000/2) / 0x100000);
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}
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gpio_set_value(S3C64XX_GPB(4), brightness);
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return brightness;
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}
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static void hmt_bl_exit(struct device *dev)
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{
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gpio_free(S3C64XX_GPB(4));
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}
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static struct platform_pwm_backlight_data hmt_backlight_data = {
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.pwm_id = 1,
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.max_brightness = 100 * 256,
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.dft_brightness = 40 * 256,
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.pwm_period_ns = 1000000000 / (100 * 256 * 20),
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.init = hmt_bl_init,
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.notify = hmt_bl_notify,
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.exit = hmt_bl_exit,
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};
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static struct platform_device hmt_backlight_device = {
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.name = "pwm-backlight",
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.dev = {
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.parent = &s3c_device_timer[1].dev,
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.platform_data = &hmt_backlight_data,
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},
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};
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static struct s3c_fb_pd_win hmt_fb_win0 = {
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.win_mode = {
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.pixclock = 41094,
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.left_margin = 8,
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.right_margin = 13,
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.upper_margin = 7,
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.lower_margin = 5,
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.hsync_len = 3,
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.vsync_len = 1,
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.xres = 800,
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.yres = 480,
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},
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.max_bpp = 32,
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.default_bpp = 16,
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};
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/* 405566 clocks per frame => 60Hz refresh requires 24333960Hz clock */
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static struct s3c_fb_platdata hmt_lcd_pdata __initdata = {
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.setup_gpio = s3c64xx_fb_gpio_setup_24bpp,
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.win[0] = &hmt_fb_win0,
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.vidcon0 = VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB,
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.vidcon1 = VIDCON1_INV_HSYNC | VIDCON1_INV_VSYNC,
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};
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static struct mtd_partition hmt_nand_part[] = {
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[0] = {
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.name = "uboot",
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.size = SZ_512K,
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.offset = 0,
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},
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[1] = {
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.name = "uboot-env1",
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.size = SZ_256K,
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.offset = SZ_512K,
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},
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[2] = {
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.name = "uboot-env2",
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.size = SZ_256K,
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.offset = SZ_512K + SZ_256K,
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},
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[3] = {
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.name = "kernel",
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.size = SZ_2M,
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.offset = SZ_1M,
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},
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[4] = {
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.name = "rootfs",
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.size = MTDPART_SIZ_FULL,
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.offset = SZ_1M + SZ_2M,
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},
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};
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static struct s3c2410_nand_set hmt_nand_sets[] = {
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[0] = {
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.name = "nand",
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.nr_chips = 1,
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.nr_partitions = ARRAY_SIZE(hmt_nand_part),
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.partitions = hmt_nand_part,
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},
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};
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static struct s3c2410_platform_nand hmt_nand_info = {
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.tacls = 25,
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.twrph0 = 55,
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.twrph1 = 40,
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.nr_sets = ARRAY_SIZE(hmt_nand_sets),
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.sets = hmt_nand_sets,
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};
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static struct gpio_led hmt_leds[] = {
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{ /* left function keys */
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.name = "left:blue",
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.gpio = S3C64XX_GPO(12),
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.default_trigger = "default-on",
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},
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{ /* right function keys - red */
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.name = "right:red",
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.gpio = S3C64XX_GPO(13),
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},
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{ /* right function keys - green */
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.name = "right:green",
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.gpio = S3C64XX_GPO(14),
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},
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{ /* right function keys - blue */
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.name = "right:blue",
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.gpio = S3C64XX_GPO(15),
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.default_trigger = "default-on",
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},
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};
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static struct gpio_led_platform_data hmt_led_data = {
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.num_leds = ARRAY_SIZE(hmt_leds),
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.leds = hmt_leds,
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};
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static struct platform_device hmt_leds_device = {
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.name = "leds-gpio",
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.id = -1,
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.dev.platform_data = &hmt_led_data,
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};
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static struct map_desc hmt_iodesc[] = {};
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static struct platform_device *hmt_devices[] __initdata = {
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&s3c_device_i2c0,
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&s3c_device_nand,
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&s3c_device_fb,
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&s3c_device_usb,
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&s3c_device_timer[1],
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&hmt_backlight_device,
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&hmt_leds_device,
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};
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static void __init hmt_map_io(void)
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{
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s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
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s3c24xx_init_clocks(12000000);
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s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
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}
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static void __init hmt_machine_init(void)
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{
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s3c_i2c0_set_platdata(NULL);
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s3c_fb_set_platdata(&hmt_lcd_pdata);
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s3c_device_nand.dev.platform_data = &hmt_nand_info;
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gpio_request(S3C64XX_GPC(7), "usb power");
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gpio_direction_output(S3C64XX_GPC(7), 0);
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gpio_request(S3C64XX_GPM(0), "usb power");
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gpio_direction_output(S3C64XX_GPM(0), 1);
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gpio_request(S3C64XX_GPK(7), "usb power");
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gpio_direction_output(S3C64XX_GPK(7), 1);
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gpio_request(S3C64XX_GPF(13), "usb power");
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gpio_direction_output(S3C64XX_GPF(13), 1);
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platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
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}
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MACHINE_START(HMT, "Airgoo-HMT")
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/* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
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.phys_io = S3C_PA_UART & 0xfff00000,
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.io_pg_offst = (((u32)S3C_VA_UART) >> 18) & 0xfffc,
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.boot_params = S3C64XX_PA_SDRAM + 0x100,
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.init_irq = s3c6410_init_irq,
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.map_io = hmt_map_io,
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.init_machine = hmt_machine_init,
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.timer = &s3c24xx_timer,
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MACHINE_END
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