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338 lines
7.7 KiB
338 lines
7.7 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* linux/arch/arm/mach-sa1100/badge4.c |
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* |
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* BadgePAD 4 specific initialization |
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* |
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* Tim Connors <[email protected]> |
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* Christopher Hoover <[email protected]> |
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* |
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* Copyright (C) 2002 Hewlett-Packard Company |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/platform_data/sa11x0-serial.h> |
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#include <linux/platform_device.h> |
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#include <linux/delay.h> |
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#include <linux/tty.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/partitions.h> |
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#include <linux/errno.h> |
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#include <linux/gpio.h> |
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#include <linux/leds.h> |
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#include <mach/hardware.h> |
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#include <asm/mach-types.h> |
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#include <asm/setup.h> |
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#include <mach/irqs.h> |
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#include <asm/mach/arch.h> |
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#include <asm/mach/flash.h> |
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#include <asm/mach/map.h> |
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#include <asm/hardware/sa1111.h> |
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#include <mach/badge4.h> |
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#include "generic.h" |
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static struct resource sa1111_resources[] = { |
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[0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000), |
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[1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111), |
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}; |
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static int badge4_sa1111_enable(void *data, unsigned devid) |
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{ |
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if (devid == SA1111_DEVID_USB) |
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badge4_set_5V(BADGE4_5V_USB, 1); |
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return 0; |
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} |
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static void badge4_sa1111_disable(void *data, unsigned devid) |
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{ |
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if (devid == SA1111_DEVID_USB) |
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badge4_set_5V(BADGE4_5V_USB, 0); |
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} |
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static struct sa1111_platform_data sa1111_info = { |
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.disable_devs = SA1111_DEVID_PS2_MSE, |
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.enable = badge4_sa1111_enable, |
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.disable = badge4_sa1111_disable, |
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}; |
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static u64 sa1111_dmamask = 0xffffffffUL; |
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static struct platform_device sa1111_device = { |
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.name = "sa1111", |
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.id = 0, |
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.dev = { |
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.dma_mask = &sa1111_dmamask, |
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.coherent_dma_mask = 0xffffffff, |
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.platform_data = &sa1111_info, |
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}, |
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.num_resources = ARRAY_SIZE(sa1111_resources), |
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.resource = sa1111_resources, |
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}; |
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/* LEDs */ |
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struct gpio_led badge4_gpio_leds[] = { |
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{ |
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.name = "badge4:red", |
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.default_trigger = "heartbeat", |
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.gpio = 7, |
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}, |
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{ |
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.name = "badge4:green", |
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.default_trigger = "cpu0", |
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.gpio = 9, |
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}, |
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}; |
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static struct gpio_led_platform_data badge4_gpio_led_info = { |
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.leds = badge4_gpio_leds, |
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.num_leds = ARRAY_SIZE(badge4_gpio_leds), |
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}; |
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static struct platform_device badge4_leds = { |
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.name = "leds-gpio", |
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.id = -1, |
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.dev = { |
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.platform_data = &badge4_gpio_led_info, |
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} |
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}; |
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static struct platform_device *devices[] __initdata = { |
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&sa1111_device, |
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&badge4_leds, |
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}; |
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static int __init badge4_sa1111_init(void) |
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{ |
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/* |
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* Ensure that the memory bus request/grant signals are setup, |
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* and the grant is held in its inactive state |
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*/ |
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sa1110_mb_disable(); |
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/* |
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* Probe for SA1111. |
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*/ |
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return platform_add_devices(devices, ARRAY_SIZE(devices)); |
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} |
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/* |
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* 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit) |
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* Eight 4 KiW Parameter Bottom Blocks (64 KiB) |
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* Sixty-three 32 KiW Main Blocks (4032 Ki b) |
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* |
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* <or> |
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* |
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* 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit) |
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* Eight 4 KiW Parameter Bottom Blocks (64 KiB) |
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* One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b) |
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*/ |
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static struct mtd_partition badge4_partitions[] = { |
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{ |
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.name = "BLOB boot loader", |
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.offset = 0, |
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.size = 0x0000A000 |
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}, { |
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.name = "params", |
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.offset = MTDPART_OFS_APPEND, |
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.size = 0x00006000 |
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}, { |
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.name = "root", |
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.offset = MTDPART_OFS_APPEND, |
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.size = MTDPART_SIZ_FULL |
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} |
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}; |
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static struct flash_platform_data badge4_flash_data = { |
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.map_name = "cfi_probe", |
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.parts = badge4_partitions, |
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.nr_parts = ARRAY_SIZE(badge4_partitions), |
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}; |
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static struct resource badge4_flash_resource = |
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DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M); |
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static int five_v_on __initdata = 0; |
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static int __init five_v_on_setup(char *ignore) |
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{ |
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five_v_on = 1; |
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return 1; |
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} |
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__setup("five_v_on", five_v_on_setup); |
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static int __init badge4_init(void) |
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{ |
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int ret; |
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if (!machine_is_badge4()) |
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return -ENODEV; |
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/* LCD */ |
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GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 | |
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BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 | |
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BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 | |
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BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 | |
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BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID | |
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BADGE4_GPIO_GPC_VID); |
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GPDR &= ~BADGE4_GPIO_INT_VID; |
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GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 | |
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BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 | |
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BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 | |
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BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 | |
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BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID | |
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BADGE4_GPIO_GPC_VID); |
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/* SDRAM SPD i2c */ |
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GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL); |
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GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL); |
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/* uart */ |
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GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2); |
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GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2); |
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/* CPLD muxsel0 input for mux/adc chip select */ |
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GPCR = BADGE4_GPIO_MUXSEL0; |
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GPDR |= BADGE4_GPIO_MUXSEL0; |
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/* test points: J5, J6 as inputs, J7 outputs */ |
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GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6); |
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GPCR = BADGE4_GPIO_TESTPT_J7; |
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GPDR |= BADGE4_GPIO_TESTPT_J7; |
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/* 5V supply rail. */ |
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GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */ |
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GPDR |= BADGE4_GPIO_PCMEN5V; |
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/* CPLD sdram type inputs; set up by blob */ |
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//GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0); |
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printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n", |
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!!(GPLR & BADGE4_GPIO_SDTYP1), |
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!!(GPLR & BADGE4_GPIO_SDTYP0)); |
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/* SA1111 reset pin; set up by blob */ |
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//GPSR = BADGE4_GPIO_SA1111_NRST; |
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//GPDR |= BADGE4_GPIO_SA1111_NRST; |
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/* power management cruft */ |
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PGSR = 0; |
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PWER = 0; |
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PCFR = 0; |
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PSDR = 0; |
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PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */ |
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PWER |= PWER_RTC; /* wake up if rtc fires */ |
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/* drive sa1111_nrst during sleep */ |
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PGSR |= BADGE4_GPIO_SA1111_NRST; |
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/* drive CPLD as is during sleep */ |
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PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1)); |
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/* Now bring up the SA-1111. */ |
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ret = badge4_sa1111_init(); |
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if (ret < 0) |
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printk(KERN_ERR |
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"%s: SA-1111 initialization failed (%d)\n", |
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__func__, ret); |
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/* maybe turn on 5v0 from the start */ |
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badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on); |
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sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1); |
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return 0; |
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} |
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arch_initcall(badge4_init); |
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static unsigned badge4_5V_bitmap = 0; |
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void badge4_set_5V(unsigned subsystem, int on) |
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{ |
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unsigned long flags; |
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unsigned old_5V_bitmap; |
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local_irq_save(flags); |
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old_5V_bitmap = badge4_5V_bitmap; |
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if (on) { |
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badge4_5V_bitmap |= subsystem; |
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} else { |
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badge4_5V_bitmap &= ~subsystem; |
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} |
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/* detect on->off and off->on transitions */ |
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if ((!old_5V_bitmap) && (badge4_5V_bitmap)) { |
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/* was off, now on */ |
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printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__); |
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GPSR = BADGE4_GPIO_PCMEN5V; |
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} else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) { |
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/* was on, now off */ |
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printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__); |
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GPCR = BADGE4_GPIO_PCMEN5V; |
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} |
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local_irq_restore(flags); |
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} |
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EXPORT_SYMBOL(badge4_set_5V); |
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static struct map_desc badge4_io_desc[] __initdata = { |
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{ /* SRAM bank 1 */ |
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.virtual = 0xf1000000, |
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.pfn = __phys_to_pfn(0x08000000), |
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.length = 0x00100000, |
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.type = MT_DEVICE |
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}, { /* SRAM bank 2 */ |
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.virtual = 0xf2000000, |
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.pfn = __phys_to_pfn(0x10000000), |
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.length = 0x00100000, |
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.type = MT_DEVICE |
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} |
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}; |
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static void |
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badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate) |
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{ |
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if (!state) { |
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Ser1SDCR0 |= SDCR0_UART; |
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} |
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} |
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static struct sa1100_port_fns badge4_port_fns __initdata = { |
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.pm = badge4_uart_pm, |
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}; |
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static void __init badge4_map_io(void) |
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{ |
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sa1100_map_io(); |
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iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc)); |
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sa1100_register_uart_fns(&badge4_port_fns); |
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sa1100_register_uart(0, 3); |
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sa1100_register_uart(1, 1); |
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} |
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MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4") |
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.atag_offset = 0x100, |
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.map_io = badge4_map_io, |
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.nr_irqs = SA1100_NR_IRQS, |
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.init_irq = sa1100_init_irq, |
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.init_late = sa11x0_init_late, |
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.init_time = sa1100_timer_init, |
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#ifdef CONFIG_SA1111 |
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.dma_zone_size = SZ_1M, |
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#endif |
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.restart = sa11x0_restart, |
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MACHINE_END
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