283 lines
6.3 KiB
C
283 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
//
|
|
// mach-hmt.c - Platform code for Airgoo HMT
|
|
//
|
|
// Copyright 2009 Peter Korsgaard <jacmet@sunsite.dk>
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/serial_core.h>
|
|
#include <linux/serial_s3c.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.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 <video/samsung_fimd.h>
|
|
#include "map.h"
|
|
#include "irqs.h"
|
|
|
|
#include <asm/irq.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
#include <linux/platform_data/i2c-s3c2410.h>
|
|
#include "gpio-samsung.h"
|
|
#include "fb.h"
|
|
#include <linux/platform_data/mtd-nand-s3c2410.h>
|
|
|
|
#include "devs.h"
|
|
#include "cpu.h"
|
|
|
|
#include "s3c64xx.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 struct pwm_lookup hmt_pwm_lookup[] = {
|
|
PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
|
|
1000000000 / (100 * 256 * 20), PWM_POLARITY_NORMAL),
|
|
};
|
|
|
|
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 = {
|
|
.max_brightness = 100 * 256,
|
|
.dft_brightness = 40 * 256,
|
|
.init = hmt_bl_init,
|
|
.notify = hmt_bl_notify,
|
|
.exit = hmt_bl_exit,
|
|
|
|
};
|
|
|
|
static struct platform_device hmt_backlight_device = {
|
|
.name = "pwm-backlight",
|
|
.dev = {
|
|
.parent = &samsung_device_pwm.dev,
|
|
.platform_data = &hmt_backlight_data,
|
|
},
|
|
};
|
|
|
|
static struct s3c_fb_pd_win hmt_fb_win0 = {
|
|
.max_bpp = 32,
|
|
.default_bpp = 16,
|
|
.xres = 800,
|
|
.yres = 480,
|
|
};
|
|
|
|
static struct fb_videomode hmt_lcd_timing = {
|
|
.left_margin = 8,
|
|
.right_margin = 13,
|
|
.upper_margin = 7,
|
|
.lower_margin = 5,
|
|
.hsync_len = 3,
|
|
.vsync_len = 1,
|
|
.xres = 800,
|
|
.yres = 480,
|
|
};
|
|
|
|
/* 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,
|
|
.vtiming = &hmt_lcd_timing,
|
|
.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,
|
|
.engine_type = NAND_ECC_ENGINE_TYPE_SOFT,
|
|
};
|
|
|
|
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,
|
|
&samsung_device_pwm,
|
|
&hmt_backlight_device,
|
|
&hmt_leds_device,
|
|
};
|
|
|
|
static void __init hmt_map_io(void)
|
|
{
|
|
s3c64xx_init_io(hmt_iodesc, ARRAY_SIZE(hmt_iodesc));
|
|
s3c64xx_set_xtal_freq(12000000);
|
|
s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs));
|
|
s3c64xx_set_timer_source(S3C64XX_PWM3, S3C64XX_PWM4);
|
|
}
|
|
|
|
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);
|
|
|
|
pwm_add_table(hmt_pwm_lookup, ARRAY_SIZE(hmt_pwm_lookup));
|
|
platform_add_devices(hmt_devices, ARRAY_SIZE(hmt_devices));
|
|
}
|
|
|
|
MACHINE_START(HMT, "Airgoo-HMT")
|
|
/* Maintainer: Peter Korsgaard <jacmet@sunsite.dk> */
|
|
.atag_offset = 0x100,
|
|
.nr_irqs = S3C64XX_NR_IRQS,
|
|
.init_irq = s3c6410_init_irq,
|
|
.map_io = hmt_map_io,
|
|
.init_machine = hmt_machine_init,
|
|
.init_time = s3c64xx_timer_init,
|
|
MACHINE_END
|