Orange Pi5 kernel

// 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 <mach/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