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282 lines
6.3 KiB
282 lines
6.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// mach-hmt.c - Platform code for Airgoo HMT |
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// |
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// Copyright 2009 Peter Korsgaard <[email protected]> |
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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/serial_s3c.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.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 <video/samsung_fimd.h> |
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#include "map.h" |
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#include <mach/irqs.h> |
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#include <asm/irq.h> |
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#include <asm/mach-types.h> |
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#include <linux/platform_data/i2c-s3c2410.h> |
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#include "gpio-samsung.h" |
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#include "fb.h" |
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#include <linux/platform_data/mtd-nand-s3c2410.h> |
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#include "devs.h" |
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#include "cpu.h" |
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#include "s3c64xx.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 struct pwm_lookup hmt_pwm_lookup[] = { |
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PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL, |
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1000000000 / (100 * 256 * 20), PWM_POLARITY_NORMAL), |
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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(struct device *dev, 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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.max_brightness = 100 * 256, |
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.dft_brightness = 40 * 256, |
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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 = &samsung_device_pwm.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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.max_bpp = 32, |
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.default_bpp = 16, |
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.xres = 800, |
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.yres = 480, |
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}; |
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static struct fb_videomode hmt_lcd_timing = { |
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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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/* 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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.vtiming = &hmt_lcd_timing, |
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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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.engine_type = NAND_ECC_ENGINE_TYPE_SOFT, |
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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_ohci, |
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&samsung_device_pwm, |
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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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s3c64xx_set_xtal_freq(12000000); |
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s3c24xx_init_uarts(hmt_uartcfgs, ARRAY_SIZE(hmt_uartcfgs)); |
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s3c64xx_set_timer_source(S3C64XX_PWM3, S3C64XX_PWM4); |
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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_nand_set_platdata(&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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pwm_add_table(hmt_pwm_lookup, ARRAY_SIZE(hmt_pwm_lookup)); |
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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 <[email protected]> */ |
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.atag_offset = 0x100, |
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.nr_irqs = S3C64XX_NR_IRQS, |
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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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.init_time = s3c64xx_timer_init, |
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MACHINE_END
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