Commit 2896bda4 authored by Peter Korsgaard's avatar Peter Korsgaard Committed by Ben Dooks
Browse files

ARM: S3C6410: airgoo hmt board support 

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: default avatarPeter Korsgaard <jacmet@sunsite.dk>
[ben-linux@fluff.org: subject rewrite]
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent 9b71de49

arch/arm/mach-s3c6410/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -97,3 +97,13 @@ config MACH_NCP 
	select S3C64XX_SETUP_I2C1

	help

          Machine support for the Samsung NCP



config MACH_HMT

	bool "Airgoo HMT"

	select CPU_S3C6410

	select S3C_DEV_FB

	select S3C_DEV_USB_HOST

	select S3C64XX_SETUP_FB_24BPP

	select HAVE_PWM

	help

	  Machine support for the Airgoo HMT

arch/arm/mach-s3c6410/Makefile

+1 −2
Original line number Diff line number Diff line
@@ -23,5 +23,4 @@ obj-$(CONFIG_S3C6410_SETUP_SDHCI) += setup-sdhci.o 
obj-$(CONFIG_MACH_ANW6410)	+= mach-anw6410.o

obj-$(CONFIG_MACH_SMDK6410)	+= mach-smdk6410.o

obj-$(CONFIG_MACH_NCP)		+= mach-ncp.o



obj-$(CONFIG_MACH_HMT)		+= mach-hmt.o

arch/arm/mach-s3c6410/mach-hmt.c

0 → 100644
+276 −0
Original line number Diff line number Diff line 
/* 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 <plat/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(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	= {

		.pixclock	= 41094,

		.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_usb,

	&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_device_nand.dev.platform_data = &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> */

	.phys_io	= S3C_PA_UART & 0xfff00000,

	.io_pg_offst	= (((u32)S3C_VA_UART) >> 18) & 0xfffc,

	.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

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