/* * linux/arch/arm/mach-s3c2442/mach-gta02.c * * S3C2442 Machine Support for Openmoko GTA02 / FreeRunner. * * Copyright (C) 2006-2009 by Openmoko, Inc. * Authors: Harald Welte * Andy Green * Werner Almesberger * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static struct pcf50633 *gta02_pcf; /* * This gets called every 1ms when we paniced. */ static long gta02_panic_blink(long count) { long delay = 0; static long last_blink; static char led; /* Fast blink: 200ms period. */ if (count - last_blink < 100) return 0; led ^= 1; gpio_direction_output(GTA02_GPIO_AUX_LED, led); last_blink = count; 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(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", }; 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, .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, .state_mem = { .enabled = 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, .state_mem = { .enabled = 1, }, }, }, [PCF50633_REGULATOR_HCLDO] = { .constraints = { .min_uV = 2000000, .max_uV = 3300000, .valid_modes_mask = REGULATOR_MODE_NORMAL, .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE, .always_on = 1, }, }, [PCF50633_REGULATOR_LDO1] = { .constraints = { .min_uV = 3300000, .max_uV = 3300000, .valid_modes_mask = REGULATOR_MODE_NORMAL, .apply_uV = 1, .state_mem = { .enabled = 0, }, }, }, [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, .apply_uV = 1, }, }, [PCF50633_REGULATOR_LDO5] = { .constraints = { .min_uV = 3000000, .max_uV = 3000000, .valid_modes_mask = REGULATOR_MODE_NORMAL, .apply_uV = 1, .state_mem = { .enabled = 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, .state_mem = { .enabled = 1, }, }, }, }, .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 = { .start = GTA02_FLASH_BASE, .end = GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1, .flags = IORESOURCE_MEM, }; 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, }; struct platform_device s3c24xx_pwm_device = { .name = "s3c24xx_pwm", .num_resources = 0, }; 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, }; static void gta02_udc_command(enum s3c2410_udc_cmd_e cmd) { switch (cmd) { case S3C2410_UDC_P_ENABLE: pr_debug("%s S3C2410_UDC_P_ENABLE\n", __func__); gpio_direction_output(GTA02_GPIO_USB_PULLUP, 1); break; case S3C2410_UDC_P_DISABLE: pr_debug("%s S3C2410_UDC_P_DISABLE\n", __func__); gpio_direction_output(GTA02_GPIO_USB_PULLUP, 0); break; case S3C2410_UDC_P_RESET: pr_debug("%s S3C2410_UDC_P_RESET\n", __func__); /* FIXME: Do something here. */ } } /* Get PMU to set USB current limit accordingly. */ static struct s3c2410_udc_mach_info gta02_udc_cfg = { .vbus_draw = gta02_udc_vbus_draw, .udc_command = gta02_udc_command, }; static void gta02_bl_set_intensity(int intensity) { struct pcf50633 *pcf = gta02_pcf; int old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT); /* We map 8-bit intensity to 6-bit intensity in hardware. */ intensity >>= 2; /* * This can happen during, eg, print of panic on blanked console, * but we can't service i2c without interrupts active, so abort. */ if (in_atomic()) { printk(KERN_ERR "gta02_bl_set_intensity called while atomic\n"); return; } old_intensity = pcf50633_reg_read(pcf, PCF50633_REG_LEDOUT); if (intensity == old_intensity) return; /* We can't do this anywhere else. */ pcf50633_reg_write(pcf, PCF50633_REG_LEDDIM, 5); if (!(pcf50633_reg_read(pcf, PCF50633_REG_LEDENA) & 3)) old_intensity = 0; /* * The PCF50633 cannot handle LEDOUT = 0 (datasheet p60) * if seen, you have to re-enable the LED unit. */ if (!intensity || !old_intensity) pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 0); /* Illegal to set LEDOUT to 0. */ if (!intensity) pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, 2); else pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_LEDOUT, 0x3f, intensity); if (intensity) pcf50633_reg_write(pcf, PCF50633_REG_LEDENA, 2); } static struct generic_bl_info gta02_bl_info = { .name = "gta02-bl", .max_intensity = 0xff, .default_intensity = 0xff, .set_bl_intensity = gta02_bl_set_intensity, }; static struct platform_device gta02_bl_dev = { .name = "generic-bl", .id = 1, .dev = { .platform_data = >a02_bl_info, }, }; /* USB */ static struct s3c2410_hcd_info gta02_usb_info __initdata = { .port[0] = { .flags = S3C_HCDFLG_USED, }, .port[1] = { .flags = 0, }, }; 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)); } /* 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, }; /* These guys DO need to be children of PMU. */ static struct platform_device *gta02_devices_pmu_children[] = { >a02_bl_dev, }; /* * 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 make AUX LED blink at ~5Hz. */ 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); 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; } MACHINE_START(NEO1973_GTA02, "GTA02") /* Maintainer: Nelson Castillo */ .phys_io = S3C2410_PA_UART, .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc, .boot_params = S3C2410_SDRAM_PA + 0x100, .map_io = gta02_map_io, .init_irq = s3c24xx_init_irq, .init_machine = gta02_machine_init, .timer = &s3c24xx_timer, MACHINE_END