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366 lines
7.9 KiB
366 lines
7.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* arch/arm/mach-iop32x/n2100.c |
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* |
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* Board support code for the Thecus N2100 platform. |
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* |
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* Author: Rory Bolt <[email protected]> |
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* Copyright (C) 2002 Rory Bolt |
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* Copyright 2003 (c) MontaVista, Software, Inc. |
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* Copyright (C) 2004 Intel Corp. |
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*/ |
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#include <linux/mm.h> |
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#include <linux/init.h> |
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#include <linux/f75375s.h> |
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#include <linux/leds-pca9532.h> |
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#include <linux/delay.h> |
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#include <linux/kernel.h> |
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#include <linux/pci.h> |
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#include <linux/pm.h> |
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#include <linux/string.h> |
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#include <linux/serial_core.h> |
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#include <linux/serial_8250.h> |
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#include <linux/mtd/physmap.h> |
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#include <linux/i2c.h> |
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#include <linux/platform_device.h> |
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#include <linux/reboot.h> |
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#include <linux/io.h> |
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#include <linux/gpio.h> |
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#include <linux/gpio/machine.h> |
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#include <asm/irq.h> |
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#include <asm/mach/arch.h> |
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#include <asm/mach/map.h> |
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#include <asm/mach/pci.h> |
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#include <asm/mach/time.h> |
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#include <asm/mach-types.h> |
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#include <asm/page.h> |
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#include "hardware.h" |
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#include "irqs.h" |
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#include "gpio-iop32x.h" |
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/* |
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* N2100 timer tick configuration. |
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*/ |
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static void __init n2100_timer_init(void) |
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{ |
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/* 33.000 MHz crystal. */ |
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iop_init_time(198000000); |
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} |
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/* |
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* N2100 I/O. |
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*/ |
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static struct map_desc n2100_io_desc[] __initdata = { |
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{ /* on-board devices */ |
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.virtual = N2100_UART, |
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.pfn = __phys_to_pfn(N2100_UART), |
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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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void __init n2100_map_io(void) |
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{ |
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iop3xx_map_io(); |
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iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc)); |
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} |
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/* |
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* N2100 PCI. |
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*/ |
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static int n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
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{ |
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int irq; |
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if (PCI_SLOT(dev->devfn) == 1) { |
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/* RTL8110SB #1 */ |
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irq = IRQ_IOP32X_XINT0; |
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} else if (PCI_SLOT(dev->devfn) == 2) { |
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/* RTL8110SB #2 */ |
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irq = IRQ_IOP32X_XINT3; |
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} else if (PCI_SLOT(dev->devfn) == 3) { |
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/* Sil3512 */ |
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irq = IRQ_IOP32X_XINT2; |
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} else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) { |
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/* VT6212 INTA */ |
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irq = IRQ_IOP32X_XINT1; |
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} else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) { |
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/* VT6212 INTB */ |
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irq = IRQ_IOP32X_XINT0; |
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} else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) { |
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/* VT6212 INTC */ |
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irq = IRQ_IOP32X_XINT2; |
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} else if (PCI_SLOT(dev->devfn) == 5) { |
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/* Mini-PCI slot */ |
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irq = IRQ_IOP32X_XINT3; |
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} else { |
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printk(KERN_ERR "n2100_pci_map_irq() called for unknown " |
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"device PCI:%d:%d:%d\n", dev->bus->number, |
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PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); |
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irq = -1; |
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} |
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return irq; |
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} |
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static struct hw_pci n2100_pci __initdata = { |
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.nr_controllers = 1, |
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.ops = &iop3xx_ops, |
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.setup = iop3xx_pci_setup, |
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.preinit = iop3xx_pci_preinit, |
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.map_irq = n2100_pci_map_irq, |
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}; |
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/* |
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* Both r8169 chips on the n2100 exhibit PCI parity problems. Turn |
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* off parity reporting for both ports so we don't get error interrupts |
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* for them. |
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*/ |
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static void n2100_fixup_r8169(struct pci_dev *dev) |
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{ |
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if (dev->bus->number == 0 && |
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(dev->devfn == PCI_DEVFN(1, 0) || |
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dev->devfn == PCI_DEVFN(2, 0))) |
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pci_disable_parity(dev); |
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} |
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169); |
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static int __init n2100_pci_init(void) |
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{ |
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if (machine_is_n2100()) |
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pci_common_init(&n2100_pci); |
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return 0; |
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} |
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subsys_initcall(n2100_pci_init); |
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/* |
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* N2100 machine initialisation. |
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*/ |
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static struct physmap_flash_data n2100_flash_data = { |
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.width = 2, |
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}; |
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static struct resource n2100_flash_resource = { |
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.start = 0xf0000000, |
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.end = 0xf0ffffff, |
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.flags = IORESOURCE_MEM, |
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}; |
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static struct platform_device n2100_flash_device = { |
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.name = "physmap-flash", |
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.id = 0, |
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.dev = { |
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.platform_data = &n2100_flash_data, |
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}, |
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.num_resources = 1, |
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.resource = &n2100_flash_resource, |
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}; |
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static struct plat_serial8250_port n2100_serial_port[] = { |
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{ |
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.mapbase = N2100_UART, |
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.membase = (char *)N2100_UART, |
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.irq = 0, |
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.flags = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ, |
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.iotype = UPIO_MEM, |
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.regshift = 0, |
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.uartclk = 1843200, |
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}, |
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{ }, |
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}; |
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static struct resource n2100_uart_resource = { |
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.start = N2100_UART, |
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.end = N2100_UART + 7, |
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.flags = IORESOURCE_MEM, |
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}; |
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static struct platform_device n2100_serial_device = { |
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.name = "serial8250", |
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.id = PLAT8250_DEV_PLATFORM, |
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.dev = { |
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.platform_data = n2100_serial_port, |
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}, |
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.num_resources = 1, |
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.resource = &n2100_uart_resource, |
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}; |
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static struct f75375s_platform_data n2100_f75375s = { |
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.pwm = { 255, 255 }, |
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.pwm_enable = { 0, 0 }, |
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}; |
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static struct pca9532_platform_data n2100_leds = { |
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.leds = { |
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{ .name = "n2100:red:satafail0", |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_LED, |
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}, |
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{ .name = "n2100:red:satafail1", |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_LED, |
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}, |
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{ .name = "n2100:blue:usb", |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_LED, |
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}, |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .name = "n2100:red:usb", |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_LED, |
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}, |
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{ .type = PCA9532_TYPE_NONE }, /* power OFF gpio */ |
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{ .type = PCA9532_TYPE_NONE }, /* reset gpio */ |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .type = PCA9532_TYPE_NONE }, |
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{ .name = "n2100:orange:system", |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_LED, |
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}, |
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{ .name = "n2100:red:system", |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_LED, |
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}, |
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{ .name = "N2100 beeper" , |
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.state = PCA9532_OFF, |
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.type = PCA9532_TYPE_N2100_BEEP, |
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}, |
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}, |
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.psc = { 0, 0 }, |
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.pwm = { 0, 0 }, |
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}; |
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static struct i2c_board_info __initdata n2100_i2c_devices[] = { |
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{ |
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I2C_BOARD_INFO("rs5c372b", 0x32), |
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}, |
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{ |
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I2C_BOARD_INFO("f75375", 0x2e), |
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.platform_data = &n2100_f75375s, |
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}, |
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{ |
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I2C_BOARD_INFO("pca9532", 0x60), |
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.platform_data = &n2100_leds, |
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}, |
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}; |
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/* |
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* Pull PCA9532 GPIO #8 low to power off the machine. |
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*/ |
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static void n2100_power_off(void) |
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{ |
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local_irq_disable(); |
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/* Start condition, I2C address of PCA9532, write transaction. */ |
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*IOP3XX_IDBR0 = 0xc0; |
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*IOP3XX_ICR0 = 0xe9; |
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mdelay(1); |
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/* Write address 0x08. */ |
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*IOP3XX_IDBR0 = 0x08; |
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*IOP3XX_ICR0 = 0xe8; |
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mdelay(1); |
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/* Write data 0x01, stop condition. */ |
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*IOP3XX_IDBR0 = 0x01; |
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*IOP3XX_ICR0 = 0xea; |
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while (1) |
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; |
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} |
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static void n2100_restart(enum reboot_mode mode, const char *cmd) |
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{ |
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int ret; |
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ret = gpio_direction_output(N2100_HARDWARE_RESET, 0); |
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if (ret) { |
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pr_crit("could not drive reset GPIO low\n"); |
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return; |
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} |
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/* Wait for reset to happen */ |
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while (1) |
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; |
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} |
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static struct timer_list power_button_poll_timer; |
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static void power_button_poll(struct timer_list *unused) |
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{ |
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if (gpio_get_value(N2100_POWER_BUTTON) == 0) { |
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ctrl_alt_del(); |
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return; |
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} |
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power_button_poll_timer.expires = jiffies + (HZ / 10); |
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add_timer(&power_button_poll_timer); |
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} |
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static int __init n2100_request_gpios(void) |
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{ |
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int ret; |
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if (!machine_is_n2100()) |
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return 0; |
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ret = gpio_request(N2100_HARDWARE_RESET, "reset"); |
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if (ret) |
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pr_err("could not request reset GPIO\n"); |
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ret = gpio_request(N2100_POWER_BUTTON, "power"); |
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if (ret) |
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pr_err("could not request power GPIO\n"); |
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else { |
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ret = gpio_direction_input(N2100_POWER_BUTTON); |
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if (ret) |
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pr_err("could not set power GPIO as input\n"); |
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} |
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/* Set up power button poll timer */ |
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timer_setup(&power_button_poll_timer, power_button_poll, 0); |
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power_button_poll_timer.expires = jiffies + (HZ / 10); |
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add_timer(&power_button_poll_timer); |
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return 0; |
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} |
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device_initcall(n2100_request_gpios); |
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static void __init n2100_init_machine(void) |
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{ |
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register_iop32x_gpio(); |
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gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup); |
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platform_device_register(&iop3xx_i2c0_device); |
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platform_device_register(&n2100_flash_device); |
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platform_device_register(&n2100_serial_device); |
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platform_device_register(&iop3xx_dma_0_channel); |
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platform_device_register(&iop3xx_dma_1_channel); |
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i2c_register_board_info(0, n2100_i2c_devices, |
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ARRAY_SIZE(n2100_i2c_devices)); |
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pm_power_off = n2100_power_off; |
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} |
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MACHINE_START(N2100, "Thecus N2100") |
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/* Maintainer: Lennert Buytenhek <[email protected]> */ |
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.atag_offset = 0x100, |
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.map_io = n2100_map_io, |
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.init_irq = iop32x_init_irq, |
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.init_time = n2100_timer_init, |
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.init_machine = n2100_init_machine, |
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.restart = n2100_restart, |
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MACHINE_END
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