| /* |
| * S3C2442 Machine Support for Openmoko GTA02 / FreeRunner. |
| * |
| * Copyright (C) 2006-2009 by Openmoko, Inc. |
| * Authors: Harald Welte <laforge@openmoko.org> |
| * Andy Green <andy@openmoko.org> |
| * Werner Almesberger <werner@openmoko.org> |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/interrupt.h> |
| #include <linux/list.h> |
| #include <linux/delay.h> |
| #include <linux/timer.h> |
| #include <linux/init.h> |
| #include <linux/gpio.h> |
| #include <linux/gpio_keys.h> |
| #include <linux/workqueue.h> |
| #include <linux/platform_device.h> |
| #include <linux/serial_core.h> |
| #include <linux/input.h> |
| #include <linux/io.h> |
| #include <linux/i2c.h> |
| |
| #include <linux/mmc/host.h> |
| |
| #include <linux/mfd/pcf50633/adc.h> |
| #include <linux/mfd/pcf50633/backlight.h> |
| #include <linux/mfd/pcf50633/core.h> |
| #include <linux/mfd/pcf50633/gpio.h> |
| #include <linux/mfd/pcf50633/mbc.h> |
| #include <linux/mfd/pcf50633/pmic.h> |
| |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/nand.h> |
| #include <linux/mtd/nand_ecc.h> |
| #include <linux/mtd/partitions.h> |
| #include <linux/mtd/physmap.h> |
| |
| #include <linux/regulator/machine.h> |
| |
| #include <linux/spi/spi.h> |
| #include <linux/spi/s3c24xx.h> |
| |
| #include <asm/irq.h> |
| #include <asm/mach-types.h> |
| #include <asm/mach/arch.h> |
| #include <asm/mach/map.h> |
| #include <asm/mach/irq.h> |
| |
| #include <linux/platform_data/i2c-s3c2410.h> |
| #include <linux/platform_data/mtd-nand-s3c2410.h> |
| #include <linux/platform_data/touchscreen-s3c2410.h> |
| #include <linux/platform_data/usb-ohci-s3c2410.h> |
| #include <linux/platform_data/usb-s3c2410_udc.h> |
| |
| #include <mach/fb.h> |
| #include <mach/hardware.h> |
| #include <mach/regs-gpio.h> |
| #include <mach/regs-irq.h> |
| #include <mach/gpio-samsung.h> |
| |
| #include <plat/cpu.h> |
| #include <plat/devs.h> |
| #include <plat/gpio-cfg.h> |
| #include <plat/pm.h> |
| #include <plat/regs-serial.h> |
| #include <plat/samsung-time.h> |
| |
| #include "common.h" |
| #include "gta02.h" |
| |
| static struct pcf50633 *gta02_pcf; |
| |
| /* |
| * This gets called frequently when we paniced. |
| */ |
| |
| static long gta02_panic_blink(int state) |
| { |
| long delay = 0; |
| char led; |
| |
| led = (state) ? 1 : 0; |
| gpio_direction_output(GTA02_GPIO_AUX_LED, led); |
| |
| return delay; |
| } |
| |
| |
| static struct map_desc gta02_iodesc[] __initdata = { |
| { |
| .virtual = 0xe0000000, |
| .pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000), |
| .length = SZ_1M, |
| .type = MT_DEVICE |
| }, |
| }; |
| |
| #define UCON (S3C2410_UCON_DEFAULT | S3C2443_UCON_RXERR_IRQEN) |
| #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB) |
| #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE) |
| |
| static struct s3c2410_uartcfg gta02_uartcfgs[] = { |
| [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, |
| }, |
| }; |
| |
| #ifdef CONFIG_CHARGER_PCF50633 |
| /* |
| * On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin. |
| * We use this to recognize that we can pull 1A from the USB socket. |
| * |
| * These constants are the measured pcf50633 ADC levels with the 1A |
| * charger / 48K resistor, and with no pulldown resistor. |
| */ |
| |
| #define ADC_NOM_CHG_DETECT_1A 6 |
| #define ADC_NOM_CHG_DETECT_USB 43 |
| |
| static void |
| gta02_configure_pmu_for_charger(struct pcf50633 *pcf, void *unused, int res) |
| { |
| int ma; |
| |
| /* Interpret charger type */ |
| if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) { |
| |
| /* |
| * Sanity - stop GPO driving out now that we have a 1A charger |
| * GPO controls USB Host power generation on GTA02 |
| */ |
| pcf50633_gpio_set(pcf, PCF50633_GPO, 0); |
| |
| ma = 1000; |
| } else |
| ma = 100; |
| |
| pcf50633_mbc_usb_curlim_set(pcf, ma); |
| } |
| |
| static struct delayed_work gta02_charger_work; |
| static int gta02_usb_vbus_draw; |
| |
| static void gta02_charger_worker(struct work_struct *work) |
| { |
| if (gta02_usb_vbus_draw) { |
| pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw); |
| return; |
| } |
| |
| #ifdef CONFIG_PCF50633_ADC |
| pcf50633_adc_async_read(gta02_pcf, |
| PCF50633_ADCC1_MUX_ADCIN1, |
| PCF50633_ADCC1_AVERAGE_16, |
| gta02_configure_pmu_for_charger, |
| NULL); |
| #else |
| /* |
| * If the PCF50633 ADC is disabled we fallback to a |
| * 100mA limit for safety. |
| */ |
| pcf50633_mbc_usb_curlim_set(gta02_pcf, 100); |
| #endif |
| } |
| |
| #define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000) |
| |
| static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq) |
| { |
| if (irq == PCF50633_IRQ_USBINS) { |
| schedule_delayed_work(>a02_charger_work, |
| GTA02_CHARGER_CONFIGURE_TIMEOUT); |
| |
| return; |
| } |
| |
| if (irq == PCF50633_IRQ_USBREM) { |
| cancel_delayed_work_sync(>a02_charger_work); |
| gta02_usb_vbus_draw = 0; |
| } |
| } |
| |
| static void gta02_udc_vbus_draw(unsigned int ma) |
| { |
| if (!gta02_pcf) |
| return; |
| |
| gta02_usb_vbus_draw = ma; |
| |
| schedule_delayed_work(>a02_charger_work, |
| GTA02_CHARGER_CONFIGURE_TIMEOUT); |
| } |
| #else /* !CONFIG_CHARGER_PCF50633 */ |
| #define gta02_pmu_event_callback NULL |
| #define gta02_udc_vbus_draw NULL |
| #endif |
| |
| /* |
| * This is called when pc50633 is probed, unfortunately quite late in the |
| * day since it is an I2C bus device. Here we can belatedly define some |
| * platform devices with the advantage that we can mark the pcf50633 as the |
| * parent. This makes them get suspended and resumed with their parent |
| * the pcf50633 still around. |
| */ |
| |
| static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf); |
| |
| |
| static char *gta02_batteries[] = { |
| "battery", |
| }; |
| |
| static struct pcf50633_bl_platform_data gta02_backlight_data = { |
| .default_brightness = 0x3f, |
| .default_brightness_limit = 0, |
| .ramp_time = 5, |
| }; |
| |
| static struct pcf50633_platform_data gta02_pcf_pdata = { |
| .resumers = { |
| [0] = PCF50633_INT1_USBINS | |
| PCF50633_INT1_USBREM | |
| PCF50633_INT1_ALARM, |
| [1] = PCF50633_INT2_ONKEYF, |
| [2] = PCF50633_INT3_ONKEY1S, |
| [3] = PCF50633_INT4_LOWSYS | |
| PCF50633_INT4_LOWBAT | |
| PCF50633_INT4_HIGHTMP, |
| }, |
| |
| .batteries = gta02_batteries, |
| .num_batteries = ARRAY_SIZE(gta02_batteries), |
| |
| .charger_reference_current_ma = 1000, |
| |
| .backlight_data = >a02_backlight_data, |
| |
| .reg_init_data = { |
| [PCF50633_REGULATOR_AUTO] = { |
| .constraints = { |
| .min_uV = 3300000, |
| .max_uV = 3300000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .always_on = 1, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_DOWN1] = { |
| .constraints = { |
| .min_uV = 1300000, |
| .max_uV = 1600000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .always_on = 1, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_DOWN2] = { |
| .constraints = { |
| .min_uV = 1800000, |
| .max_uV = 1800000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .apply_uV = 1, |
| .always_on = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_HCLDO] = { |
| .constraints = { |
| .min_uV = 2000000, |
| .max_uV = 3300000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE | |
| REGULATOR_CHANGE_STATUS, |
| }, |
| }, |
| [PCF50633_REGULATOR_LDO1] = { |
| .constraints = { |
| .min_uV = 3300000, |
| .max_uV = 3300000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_LDO2] = { |
| .constraints = { |
| .min_uV = 3300000, |
| .max_uV = 3300000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_LDO3] = { |
| .constraints = { |
| .min_uV = 3000000, |
| .max_uV = 3000000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_LDO4] = { |
| .constraints = { |
| .min_uV = 3200000, |
| .max_uV = 3200000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_LDO5] = { |
| .constraints = { |
| .min_uV = 3000000, |
| .max_uV = 3000000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
| .apply_uV = 1, |
| }, |
| }, |
| [PCF50633_REGULATOR_LDO6] = { |
| .constraints = { |
| .min_uV = 3000000, |
| .max_uV = 3000000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| }, |
| }, |
| [PCF50633_REGULATOR_MEMLDO] = { |
| .constraints = { |
| .min_uV = 1800000, |
| .max_uV = 1800000, |
| .valid_modes_mask = REGULATOR_MODE_NORMAL, |
| }, |
| }, |
| |
| }, |
| .probe_done = gta02_pmu_attach_child_devices, |
| .mbc_event_callback = gta02_pmu_event_callback, |
| }; |
| |
| |
| /* NOR Flash. */ |
| |
| #define GTA02_FLASH_BASE 0x18000000 /* GCS3 */ |
| #define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */ |
| |
| static struct physmap_flash_data gta02_nor_flash_data = { |
| .width = 2, |
| }; |
| |
| static struct resource gta02_nor_flash_resource = |
| DEFINE_RES_MEM(GTA02_FLASH_BASE, GTA02_FLASH_SIZE); |
| |
| static struct platform_device gta02_nor_flash = { |
| .name = "physmap-flash", |
| .id = 0, |
| .dev = { |
| .platform_data = >a02_nor_flash_data, |
| }, |
| .resource = >a02_nor_flash_resource, |
| .num_resources = 1, |
| }; |
| |
| |
| static struct platform_device s3c24xx_pwm_device = { |
| .name = "s3c24xx_pwm", |
| .num_resources = 0, |
| }; |
| |
| static struct platform_device gta02_dfbmcs320_device = { |
| .name = "dfbmcs320", |
| }; |
| |
| static struct i2c_board_info gta02_i2c_devs[] __initdata = { |
| { |
| I2C_BOARD_INFO("pcf50633", 0x73), |
| .irq = GTA02_IRQ_PCF50633, |
| .platform_data = >a02_pcf_pdata, |
| }, |
| { |
| I2C_BOARD_INFO("wm8753", 0x1a), |
| }, |
| }; |
| |
| static struct s3c2410_nand_set __initdata gta02_nand_sets[] = { |
| [0] = { |
| /* |
| * This name is also hard-coded in the boot loaders, so |
| * changing it would would require all users to upgrade |
| * their boot loaders, some of which are stored in a NOR |
| * that is considered to be immutable. |
| */ |
| .name = "neo1973-nand", |
| .nr_chips = 1, |
| .flash_bbt = 1, |
| }, |
| }; |
| |
| /* |
| * Choose a set of timings derived from S3C@2442B MCP54 |
| * data sheet (K5D2G13ACM-D075 MCP Memory). |
| */ |
| |
| static struct s3c2410_platform_nand __initdata gta02_nand_info = { |
| .tacls = 0, |
| .twrph0 = 25, |
| .twrph1 = 15, |
| .nr_sets = ARRAY_SIZE(gta02_nand_sets), |
| .sets = gta02_nand_sets, |
| }; |
| |
| |
| /* Get PMU to set USB current limit accordingly. */ |
| static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = { |
| .vbus_draw = gta02_udc_vbus_draw, |
| .pullup_pin = GTA02_GPIO_USB_PULLUP, |
| }; |
| |
| /* USB */ |
| static struct s3c2410_hcd_info gta02_usb_info __initdata = { |
| .port[0] = { |
| .flags = S3C_HCDFLG_USED, |
| }, |
| .port[1] = { |
| .flags = 0, |
| }, |
| }; |
| |
| /* Touchscreen */ |
| static struct s3c2410_ts_mach_info gta02_ts_info = { |
| .delay = 10000, |
| .presc = 0xff, /* slow as we can go */ |
| .oversampling_shift = 2, |
| }; |
| |
| /* Buttons */ |
| static struct gpio_keys_button gta02_buttons[] = { |
| { |
| .gpio = GTA02_GPIO_AUX_KEY, |
| .code = KEY_PHONE, |
| .desc = "Aux", |
| .type = EV_KEY, |
| .debounce_interval = 100, |
| }, |
| { |
| .gpio = GTA02_GPIO_HOLD_KEY, |
| .code = KEY_PAUSE, |
| .desc = "Hold", |
| .type = EV_KEY, |
| .debounce_interval = 100, |
| }, |
| }; |
| |
| static struct gpio_keys_platform_data gta02_buttons_pdata = { |
| .buttons = gta02_buttons, |
| .nbuttons = ARRAY_SIZE(gta02_buttons), |
| }; |
| |
| static struct platform_device gta02_buttons_device = { |
| .name = "gpio-keys", |
| .id = -1, |
| .dev = { |
| .platform_data = >a02_buttons_pdata, |
| }, |
| }; |
| |
| static void __init gta02_map_io(void) |
| { |
| s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc)); |
| s3c24xx_init_clocks(12000000); |
| s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs)); |
| samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4); |
| } |
| |
| |
| /* These are the guys that don't need to be children of PMU. */ |
| |
| static struct platform_device *gta02_devices[] __initdata = { |
| &s3c_device_ohci, |
| &s3c_device_wdt, |
| &s3c_device_sdi, |
| &s3c_device_usbgadget, |
| &s3c_device_nand, |
| >a02_nor_flash, |
| &s3c24xx_pwm_device, |
| &s3c_device_iis, |
| &s3c_device_i2c0, |
| >a02_dfbmcs320_device, |
| >a02_buttons_device, |
| &s3c_device_adc, |
| &s3c_device_ts, |
| }; |
| |
| /* These guys DO need to be children of PMU. */ |
| |
| static struct platform_device *gta02_devices_pmu_children[] = { |
| }; |
| |
| |
| /* |
| * This is called when pc50633 is probed, quite late in the day since it is an |
| * I2C bus device. Here we can define platform devices with the advantage that |
| * we can mark the pcf50633 as the parent. This makes them get suspended and |
| * resumed with their parent the pcf50633 still around. All devices whose |
| * operation depends on something from pcf50633 must have this relationship |
| * made explicit like this, or suspend and resume will become an unreliable |
| * hellworld. |
| */ |
| |
| static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf) |
| { |
| int n; |
| |
| /* Grab a copy of the now probed PMU pointer. */ |
| gta02_pcf = pcf; |
| |
| for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++) |
| gta02_devices_pmu_children[n]->dev.parent = pcf->dev; |
| |
| platform_add_devices(gta02_devices_pmu_children, |
| ARRAY_SIZE(gta02_devices_pmu_children)); |
| } |
| |
| static void gta02_poweroff(void) |
| { |
| pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1); |
| } |
| |
| static void __init gta02_machine_init(void) |
| { |
| /* Set the panic callback to turn AUX LED on or off. */ |
| panic_blink = gta02_panic_blink; |
| |
| s3c_pm_init(); |
| |
| #ifdef CONFIG_CHARGER_PCF50633 |
| INIT_DELAYED_WORK(>a02_charger_work, gta02_charger_worker); |
| #endif |
| |
| s3c24xx_udc_set_platdata(>a02_udc_cfg); |
| s3c24xx_ts_set_platdata(>a02_ts_info); |
| s3c_ohci_set_platdata(>a02_usb_info); |
| s3c_nand_set_platdata(>a02_nand_info); |
| s3c_i2c0_set_platdata(NULL); |
| |
| i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs)); |
| |
| platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices)); |
| pm_power_off = gta02_poweroff; |
| |
| regulator_has_full_constraints(); |
| } |
| |
| |
| MACHINE_START(NEO1973_GTA02, "GTA02") |
| /* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */ |
| .atag_offset = 0x100, |
| .map_io = gta02_map_io, |
| .init_irq = s3c2442_init_irq, |
| .init_machine = gta02_machine_init, |
| .init_time = samsung_timer_init, |
| .restart = s3c244x_restart, |
| MACHINE_END |