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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e917ba44f8
Remove existing tricks for handling PWM and use CLPS711X PWM driver. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
189 lines
5.1 KiB
C
189 lines
5.1 KiB
C
/*
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* Copyright (C) 2000, 2001 Blue Mug, Inc. All Rights Reserved.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/memblock.h>
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#include <linux/types.h>
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#include <linux/i2c-gpio.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/pwm.h>
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#include <linux/pwm_backlight.h>
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#include <linux/memblock.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/partitions.h>
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#include <asm/setup.h>
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#include <asm/mach/map.h>
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#include <asm/mach/arch.h>
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#include <asm/mach-types.h>
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#include <video/platform_lcd.h>
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#include <mach/hardware.h>
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#include "common.h"
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#include "devices.h"
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#define VIDEORAM_SIZE SZ_128K
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#define EDB7211_LCD_DC_DC_EN CLPS711X_GPIO(3, 1)
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#define EDB7211_LCDEN CLPS711X_GPIO(3, 2)
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#define EDB7211_LCDBL CLPS711X_GPIO(3, 3)
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#define EDB7211_I2C_SDA CLPS711X_GPIO(3, 4)
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#define EDB7211_I2C_SCL CLPS711X_GPIO(3, 5)
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#define EDB7211_FLASH0_BASE (CS0_PHYS_BASE)
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#define EDB7211_FLASH1_BASE (CS1_PHYS_BASE)
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#define EDB7211_CS8900_BASE (CS2_PHYS_BASE + 0x300)
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#define EDB7211_CS8900_IRQ (IRQ_EINT3)
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/* The extra 8 lines of the keyboard matrix */
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#define EDB7211_EXTKBD_BASE (CS3_PHYS_BASE)
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static struct i2c_gpio_platform_data edb7211_i2c_pdata __initdata = {
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.sda_pin = EDB7211_I2C_SDA,
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.scl_pin = EDB7211_I2C_SCL,
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.scl_is_output_only = 1,
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};
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static struct resource edb7211_cs8900_resource[] __initdata = {
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DEFINE_RES_MEM(EDB7211_CS8900_BASE, SZ_1K),
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DEFINE_RES_IRQ(EDB7211_CS8900_IRQ),
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};
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static struct mtd_partition edb7211_flash_partitions[] __initdata = {
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{
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.name = "Flash",
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.offset = 0,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct physmap_flash_data edb7211_flash_pdata __initdata = {
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.width = 4,
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.parts = edb7211_flash_partitions,
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.nr_parts = ARRAY_SIZE(edb7211_flash_partitions),
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};
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static struct resource edb7211_flash_resources[] __initdata = {
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DEFINE_RES_MEM(EDB7211_FLASH0_BASE, SZ_8M),
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DEFINE_RES_MEM(EDB7211_FLASH1_BASE, SZ_8M),
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};
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static struct platform_device edb7211_flash_pdev __initdata = {
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.name = "physmap-flash",
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.id = 0,
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.resource = edb7211_flash_resources,
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.num_resources = ARRAY_SIZE(edb7211_flash_resources),
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.dev = {
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.platform_data = &edb7211_flash_pdata,
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},
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};
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static void edb7211_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
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{
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if (power) {
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gpio_set_value(EDB7211_LCDEN, 1);
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udelay(100);
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gpio_set_value(EDB7211_LCD_DC_DC_EN, 1);
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} else {
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gpio_set_value(EDB7211_LCD_DC_DC_EN, 0);
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udelay(100);
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gpio_set_value(EDB7211_LCDEN, 0);
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}
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}
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static struct plat_lcd_data edb7211_lcd_power_pdata = {
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.set_power = edb7211_lcd_power_set,
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};
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static struct pwm_lookup edb7211_pwm_lookup[] = {
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PWM_LOOKUP("clps711x-pwm", 0, "pwm-backlight.0", NULL,
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0, PWM_POLARITY_NORMAL),
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};
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static struct platform_pwm_backlight_data pwm_bl_pdata = {
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.dft_brightness = 0x01,
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.max_brightness = 0x0f,
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.enable_gpio = EDB7211_LCDBL,
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};
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static struct resource clps711x_pwm_res =
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DEFINE_RES_MEM(CLPS711X_PHYS_BASE + PMPCON, SZ_4);
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static struct gpio edb7211_gpios[] __initconst = {
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{ EDB7211_LCD_DC_DC_EN, GPIOF_OUT_INIT_LOW, "LCD DC-DC" },
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{ EDB7211_LCDEN, GPIOF_OUT_INIT_LOW, "LCD POWER" },
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};
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/* Reserve screen memory region at the start of main system memory. */
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static void __init edb7211_reserve(void)
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{
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memblock_reserve(PHYS_OFFSET, VIDEORAM_SIZE);
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}
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static void __init
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fixup_edb7211(struct tag *tags, char **cmdline)
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{
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/*
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* Bank start addresses are not present in the information
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* passed in from the boot loader. We could potentially
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* detect them, but instead we hard-code them.
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*
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* Banks sizes _are_ present in the param block, but we're
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* not using that information yet.
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*/
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memblock_add(0xc0000000, SZ_8M);
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memblock_add(0xc1000000, SZ_8M);
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}
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static void __init edb7211_init_late(void)
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{
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gpio_request_array(edb7211_gpios, ARRAY_SIZE(edb7211_gpios));
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platform_device_register(&edb7211_flash_pdev);
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platform_device_register_data(NULL, "platform-lcd", 0,
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&edb7211_lcd_power_pdata,
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sizeof(edb7211_lcd_power_pdata));
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platform_device_register_simple("clps711x-pwm", PLATFORM_DEVID_NONE,
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&clps711x_pwm_res, 1);
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pwm_add_table(edb7211_pwm_lookup, ARRAY_SIZE(edb7211_pwm_lookup));
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platform_device_register_data(&platform_bus, "pwm-backlight", 0,
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&pwm_bl_pdata, sizeof(pwm_bl_pdata));
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platform_device_register_simple("video-clps711x", 0, NULL, 0);
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platform_device_register_simple("cs89x0", 0, edb7211_cs8900_resource,
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ARRAY_SIZE(edb7211_cs8900_resource));
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platform_device_register_data(NULL, "i2c-gpio", 0,
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&edb7211_i2c_pdata,
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sizeof(edb7211_i2c_pdata));
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}
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MACHINE_START(EDB7211, "CL-EDB7211 (EP7211 eval board)")
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/* Maintainer: Jon McClintock */
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.atag_offset = VIDEORAM_SIZE + 0x100,
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.fixup = fixup_edb7211,
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.reserve = edb7211_reserve,
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.map_io = clps711x_map_io,
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.init_irq = clps711x_init_irq,
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.init_time = clps711x_timer_init,
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.init_machine = clps711x_devices_init,
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.init_late = edb7211_init_late,
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.restart = clps711x_restart,
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MACHINE_END
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