From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/mips/alchemy/board-gpr.c | 322 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 322 insertions(+) create mode 100644 arch/mips/alchemy/board-gpr.c (limited to 'arch/mips/alchemy/board-gpr.c') diff --git a/arch/mips/alchemy/board-gpr.c b/arch/mips/alchemy/board-gpr.c new file mode 100644 index 000000000..ddff9a025 --- /dev/null +++ b/arch/mips/alchemy/board-gpr.c @@ -0,0 +1,322 @@ +/* + * GPR board platform device registration (Au1550) + * + * Copyright (C) 2010 Wolfgang Grandegger + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +const char *get_system_type(void) +{ + return "GPR"; +} + +void __init prom_init(void) +{ + unsigned char *memsize_str; + unsigned long memsize; + + prom_argc = fw_arg0; + prom_argv = (char **)fw_arg1; + prom_envp = (char **)fw_arg2; + + prom_init_cmdline(); + + memsize_str = prom_getenv("memsize"); + if (!memsize_str || kstrtoul(memsize_str, 0, &memsize)) + memsize = 0x04000000; + add_memory_region(0, memsize, BOOT_MEM_RAM); +} + +void prom_putchar(char c) +{ + alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); +} + +static void gpr_reset(char *c) +{ + /* switch System-LED to orange (red# and green# on) */ + alchemy_gpio_direction_output(4, 0); + alchemy_gpio_direction_output(5, 0); + + /* trigger watchdog to reset board in 200ms */ + printk(KERN_EMERG "Triggering watchdog soft reset...\n"); + raw_local_irq_disable(); + alchemy_gpio_direction_output(1, 0); + udelay(1); + alchemy_gpio_set_value(1, 1); + while (1) + cpu_wait(); +} + +static void gpr_power_off(void) +{ + while (1) + cpu_wait(); +} + +void __init board_setup(void) +{ + printk(KERN_INFO "Trapeze ITS GPR board\n"); + + pm_power_off = gpr_power_off; + _machine_halt = gpr_power_off; + _machine_restart = gpr_reset; + + /* Enable UART1/3 */ + alchemy_uart_enable(AU1000_UART3_PHYS_ADDR); + alchemy_uart_enable(AU1000_UART1_PHYS_ADDR); + + /* Take away Reset of UMTS-card */ + alchemy_gpio_direction_output(215, 1); +} + +/* + * Watchdog + */ +static struct resource gpr_wdt_resource[] = { + [0] = { + .start = 1, + .end = 1, + .name = "gpr-adm6320-wdt", + .flags = IORESOURCE_IRQ, + } +}; + +static struct platform_device gpr_wdt_device = { + .name = "adm6320-wdt", + .id = 0, + .num_resources = ARRAY_SIZE(gpr_wdt_resource), + .resource = gpr_wdt_resource, +}; + +/* + * FLASH + * + * 0x00000000-0x00200000 : "kernel" + * 0x00200000-0x00a00000 : "rootfs" + * 0x01d00000-0x01f00000 : "config" + * 0x01c00000-0x01d00000 : "yamon" + * 0x01d00000-0x01d40000 : "yamon env vars" + * 0x00000000-0x00a00000 : "kernel+rootfs" + */ +static struct mtd_partition gpr_mtd_partitions[] = { + { + .name = "kernel", + .size = 0x00200000, + .offset = 0, + }, + { + .name = "rootfs", + .size = 0x00800000, + .offset = MTDPART_OFS_APPEND, + .mask_flags = MTD_WRITEABLE, + }, + { + .name = "config", + .size = 0x00200000, + .offset = 0x01d00000, + }, + { + .name = "yamon", + .size = 0x00100000, + .offset = 0x01c00000, + }, + { + .name = "yamon env vars", + .size = 0x00040000, + .offset = MTDPART_OFS_APPEND, + }, + { + .name = "kernel+rootfs", + .size = 0x00a00000, + .offset = 0, + }, +}; + +static struct physmap_flash_data gpr_flash_data = { + .width = 4, + .nr_parts = ARRAY_SIZE(gpr_mtd_partitions), + .parts = gpr_mtd_partitions, +}; + +static struct resource gpr_mtd_resource = { + .start = 0x1e000000, + .end = 0x1fffffff, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device gpr_mtd_device = { + .name = "physmap-flash", + .dev = { + .platform_data = &gpr_flash_data, + }, + .num_resources = 1, + .resource = &gpr_mtd_resource, +}; + +/* + * LEDs + */ +static const struct gpio_led gpr_gpio_leds[] = { + { /* green */ + .name = "gpr:green", + .gpio = 4, + .active_low = 1, + }, + { /* red */ + .name = "gpr:red", + .gpio = 5, + .active_low = 1, + } +}; + +static struct gpio_led_platform_data gpr_led_data = { + .num_leds = ARRAY_SIZE(gpr_gpio_leds), + .leds = gpr_gpio_leds, +}; + +static struct platform_device gpr_led_devices = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &gpr_led_data, + } +}; + +/* + * I2C + */ +static struct gpiod_lookup_table gpr_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + /* + * This should be on "GPIO2" which has base at 200 so + * the global numbers 209 and 210 should correspond to + * local offsets 9 and 10. + */ + GPIO_LOOKUP_IDX("alchemy-gpio2", 9, NULL, 0, + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("alchemy-gpio2", 10, NULL, 1, + GPIO_ACTIVE_HIGH), + }, +}; + +static struct i2c_gpio_platform_data gpr_i2c_data = { + /* + * The open drain mode is hardwired somewhere or an electrical + * property of the alchemy GPIO controller. + */ + .sda_is_open_drain = 1, + .scl_is_open_drain = 1, + .udelay = 2, /* ~100 kHz */ + .timeout = HZ, +}; + +static struct platform_device gpr_i2c_device = { + .name = "i2c-gpio", + .id = -1, + .dev.platform_data = &gpr_i2c_data, +}; + +static struct i2c_board_info gpr_i2c_info[] __initdata = { + { + I2C_BOARD_INFO("lm83", 0x18), + } +}; + + + +static struct resource alchemy_pci_host_res[] = { + [0] = { + .start = AU1500_PCI_PHYS_ADDR, + .end = AU1500_PCI_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, +}; + +static int gpr_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) +{ + if ((slot == 0) && (pin == 1)) + return AU1550_PCI_INTA; + else if ((slot == 0) && (pin == 2)) + return AU1550_PCI_INTB; + + return 0xff; +} + +static struct alchemy_pci_platdata gpr_pci_pd = { + .board_map_irq = gpr_map_pci_irq, + .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | + PCI_CONFIG_CH | +#if defined(__MIPSEB__) + PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, +#else + 0, +#endif +}; + +static struct platform_device gpr_pci_host_dev = { + .dev.platform_data = &gpr_pci_pd, + .name = "alchemy-pci", + .id = 0, + .num_resources = ARRAY_SIZE(alchemy_pci_host_res), + .resource = alchemy_pci_host_res, +}; + +static struct platform_device *gpr_devices[] __initdata = { + &gpr_wdt_device, + &gpr_mtd_device, + &gpr_i2c_device, + &gpr_led_devices, +}; + +static int __init gpr_pci_init(void) +{ + return platform_device_register(&gpr_pci_host_dev); +} +/* must be arch_initcall; MIPS PCI scans busses in a subsys_initcall */ +arch_initcall(gpr_pci_init); + + +static int __init gpr_dev_init(void) +{ + gpiod_add_lookup_table(&gpr_i2c_gpiod_table); + i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info)); + + return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices)); +} +device_initcall(gpr_dev_init); -- cgit v1.2.3