![Andy Shevchenko](/assets/img/avatar_default.png)
Instead of custom approach let's use generic helper function. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Detlef Vollmann <dv@vollmann.ch> Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Tested-by: Tested-by: Detlef Vollmann <dv@vollmann.ch> #on DNS-323 Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
677 lines
17 KiB
C
677 lines
17 KiB
C
/*
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* arch/arm/mach-orion5x/dns323-setup.c
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*
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* Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
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*
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* Support for HW Rev C1:
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*
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* Copyright (C) 2010 Benjamin Herrenschmidt <benh@kernel.crashing.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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*/
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#include <linux/gpio.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/pci.h>
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#include <linux/irq.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mv643xx_eth.h>
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#include <linux/leds.h>
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#include <linux/gpio_keys.h>
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#include <linux/input.h>
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#include <linux/i2c.h>
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#include <linux/ata_platform.h>
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#include <linux/phy.h>
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#include <linux/marvell_phy.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/pci.h>
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#include <asm/system_info.h>
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#include <mach/orion5x.h>
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#include <plat/orion-gpio.h>
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#include "common.h"
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#include "mpp.h"
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/* Rev A1 and B1 */
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#define DNS323_GPIO_LED_RIGHT_AMBER 1
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#define DNS323_GPIO_LED_LEFT_AMBER 2
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#define DNS323_GPIO_SYSTEM_UP 3
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#define DNS323_GPIO_LED_POWER1 4
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#define DNS323_GPIO_LED_POWER2 5
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#define DNS323_GPIO_OVERTEMP 6
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#define DNS323_GPIO_RTC 7
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#define DNS323_GPIO_POWER_OFF 8
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#define DNS323_GPIO_KEY_POWER 9
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#define DNS323_GPIO_KEY_RESET 10
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/* Rev C1 */
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#define DNS323C_GPIO_KEY_POWER 1
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#define DNS323C_GPIO_POWER_OFF 2
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#define DNS323C_GPIO_LED_RIGHT_AMBER 8
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#define DNS323C_GPIO_LED_LEFT_AMBER 9
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#define DNS323C_GPIO_LED_POWER 17
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#define DNS323C_GPIO_FAN_BIT1 18
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#define DNS323C_GPIO_FAN_BIT0 19
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/* Exposed to userspace, do not change */
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enum {
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DNS323_REV_A1, /* 0 */
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DNS323_REV_B1, /* 1 */
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DNS323_REV_C1, /* 2 */
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};
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/****************************************************************************
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* PCI setup
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*/
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static int __init dns323_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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/*
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* Check for devices with hard-wired IRQs.
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*/
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irq = orion5x_pci_map_irq(dev, slot, pin);
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if (irq != -1)
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return irq;
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return -1;
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}
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static struct hw_pci dns323_pci __initdata = {
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.nr_controllers = 2,
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.setup = orion5x_pci_sys_setup,
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.scan = orion5x_pci_sys_scan_bus,
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.map_irq = dns323_pci_map_irq,
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};
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static int __init dns323_pci_init(void)
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{
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/* Rev B1 and C1 doesn't really use its PCI bus, and initialising PCI
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* gets in the way of initialising the SATA controller.
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*/
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if (machine_is_dns323() && system_rev == DNS323_REV_A1)
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pci_common_init(&dns323_pci);
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return 0;
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}
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subsys_initcall(dns323_pci_init);
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/****************************************************************************
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* 8MiB NOR flash (Spansion S29GL064M90TFIR4)
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*
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* Layout as used by D-Link:
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* 0x00000000-0x00010000 : "MTD1"
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* 0x00010000-0x00020000 : "MTD2"
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* 0x00020000-0x001a0000 : "Linux Kernel"
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* 0x001a0000-0x007d0000 : "File System"
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* 0x007d0000-0x00800000 : "u-boot"
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*/
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#define DNS323_NOR_BOOT_BASE 0xf4000000
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#define DNS323_NOR_BOOT_SIZE SZ_8M
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static struct mtd_partition dns323_partitions[] = {
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{
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.name = "MTD1",
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.size = 0x00010000,
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.offset = 0,
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}, {
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.name = "MTD2",
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.size = 0x00010000,
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.offset = 0x00010000,
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}, {
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.name = "Linux Kernel",
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.size = 0x00180000,
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.offset = 0x00020000,
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}, {
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.name = "File System",
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.size = 0x00630000,
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.offset = 0x001A0000,
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}, {
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.name = "u-boot",
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.size = 0x00030000,
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.offset = 0x007d0000,
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},
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};
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static struct physmap_flash_data dns323_nor_flash_data = {
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.width = 1,
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.parts = dns323_partitions,
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.nr_parts = ARRAY_SIZE(dns323_partitions)
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};
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static struct resource dns323_nor_flash_resource = {
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.flags = IORESOURCE_MEM,
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.start = DNS323_NOR_BOOT_BASE,
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.end = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
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};
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static struct platform_device dns323_nor_flash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &dns323_nor_flash_data,
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},
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.resource = &dns323_nor_flash_resource,
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.num_resources = 1,
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};
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/****************************************************************************
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* Ethernet
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*/
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static struct mv643xx_eth_platform_data dns323_eth_data = {
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.phy_addr = MV643XX_ETH_PHY_ADDR(8),
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};
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static int __init dns323_read_mac_addr(void)
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{
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u_int8_t addr[6];
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void __iomem *mac_page;
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/* MAC address is stored as a regular ol' string in /dev/mtdblock4
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* (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
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*/
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mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
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if (!mac_page)
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return -ENOMEM;
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if (!mac_pton((__force const char *) mac_page, addr))
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goto error_fail;
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iounmap(mac_page);
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printk("DNS-323: Found ethernet MAC address: %pM\n", addr);
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memcpy(dns323_eth_data.mac_addr, addr, 6);
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return 0;
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error_fail:
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iounmap(mac_page);
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return -EINVAL;
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}
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/****************************************************************************
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* GPIO LEDs (simple - doesn't use hardware blinking support)
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*/
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static struct gpio_led dns323ab_leds[] = {
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{
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.name = "power:blue",
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.gpio = DNS323_GPIO_LED_POWER2,
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.default_trigger = "default-on",
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}, {
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.name = "right:amber",
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.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
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.active_low = 1,
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}, {
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.name = "left:amber",
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.gpio = DNS323_GPIO_LED_LEFT_AMBER,
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.active_low = 1,
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},
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};
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static struct gpio_led dns323c_leds[] = {
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{
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.name = "power:blue",
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.gpio = DNS323C_GPIO_LED_POWER,
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.default_trigger = "timer",
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.active_low = 1,
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}, {
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.name = "right:amber",
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.gpio = DNS323C_GPIO_LED_RIGHT_AMBER,
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.active_low = 1,
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}, {
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.name = "left:amber",
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.gpio = DNS323C_GPIO_LED_LEFT_AMBER,
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.active_low = 1,
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},
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};
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static struct gpio_led_platform_data dns323ab_led_data = {
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.num_leds = ARRAY_SIZE(dns323ab_leds),
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.leds = dns323ab_leds,
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.gpio_blink_set = orion_gpio_led_blink_set,
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};
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static struct gpio_led_platform_data dns323c_led_data = {
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.num_leds = ARRAY_SIZE(dns323c_leds),
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.leds = dns323c_leds,
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.gpio_blink_set = orion_gpio_led_blink_set,
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};
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static struct platform_device dns323_gpio_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 = &dns323ab_led_data,
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},
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};
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/****************************************************************************
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* GPIO Attached Keys
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*/
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static struct gpio_keys_button dns323ab_buttons[] = {
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{
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.code = KEY_RESTART,
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.gpio = DNS323_GPIO_KEY_RESET,
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.desc = "Reset Button",
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.active_low = 1,
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}, {
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.code = KEY_POWER,
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.gpio = DNS323_GPIO_KEY_POWER,
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.desc = "Power Button",
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.active_low = 1,
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},
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};
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static struct gpio_keys_platform_data dns323ab_button_data = {
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.buttons = dns323ab_buttons,
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.nbuttons = ARRAY_SIZE(dns323ab_buttons),
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};
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static struct gpio_keys_button dns323c_buttons[] = {
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{
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.code = KEY_POWER,
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.gpio = DNS323C_GPIO_KEY_POWER,
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.desc = "Power Button",
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.active_low = 1,
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},
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};
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static struct gpio_keys_platform_data dns323c_button_data = {
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.buttons = dns323c_buttons,
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.nbuttons = ARRAY_SIZE(dns323c_buttons),
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};
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static struct platform_device dns323_button_device = {
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.name = "gpio-keys",
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.id = -1,
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.num_resources = 0,
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.dev = {
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.platform_data = &dns323ab_button_data,
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},
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};
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/*****************************************************************************
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* SATA
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*/
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static struct mv_sata_platform_data dns323_sata_data = {
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.n_ports = 2,
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};
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/****************************************************************************
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* General Setup
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*/
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static unsigned int dns323a_mpp_modes[] __initdata = {
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MPP0_PCIE_RST_OUTn,
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MPP1_GPIO, /* right amber LED (sata ch0) */
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MPP2_GPIO, /* left amber LED (sata ch1) */
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MPP3_UNUSED,
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MPP4_GPIO, /* power button LED */
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MPP5_GPIO, /* power button LED */
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MPP6_GPIO, /* GMT G751-2f overtemp */
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MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
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MPP8_GPIO, /* triggers power off */
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MPP9_GPIO, /* power button switch */
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MPP10_GPIO, /* reset button switch */
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MPP11_UNUSED,
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MPP12_UNUSED,
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MPP13_UNUSED,
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MPP14_UNUSED,
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MPP15_UNUSED,
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MPP16_UNUSED,
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MPP17_UNUSED,
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MPP18_UNUSED,
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MPP19_UNUSED,
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0,
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};
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static unsigned int dns323b_mpp_modes[] __initdata = {
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MPP0_UNUSED,
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MPP1_GPIO, /* right amber LED (sata ch0) */
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MPP2_GPIO, /* left amber LED (sata ch1) */
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MPP3_GPIO, /* system up flag */
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MPP4_GPIO, /* power button LED */
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MPP5_GPIO, /* power button LED */
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MPP6_GPIO, /* GMT G751-2f overtemp */
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MPP7_GPIO, /* M41T80 nIRQ/OUT/SQW */
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MPP8_GPIO, /* triggers power off */
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MPP9_GPIO, /* power button switch */
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MPP10_GPIO, /* reset button switch */
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MPP11_UNUSED,
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MPP12_SATA_LED,
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MPP13_SATA_LED,
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MPP14_SATA_LED,
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MPP15_SATA_LED,
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MPP16_UNUSED,
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MPP17_UNUSED,
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MPP18_UNUSED,
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MPP19_UNUSED,
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0,
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};
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static unsigned int dns323c_mpp_modes[] __initdata = {
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MPP0_GPIO, /* ? input */
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MPP1_GPIO, /* input power switch (0 = pressed) */
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MPP2_GPIO, /* output power off */
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MPP3_UNUSED, /* ? output */
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MPP4_UNUSED, /* ? output */
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MPP5_UNUSED, /* ? output */
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MPP6_UNUSED, /* ? output */
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MPP7_UNUSED, /* ? output */
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MPP8_GPIO, /* i/o right amber LED */
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MPP9_GPIO, /* i/o left amber LED */
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MPP10_GPIO, /* input */
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MPP11_UNUSED,
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MPP12_SATA_LED,
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MPP13_SATA_LED,
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MPP14_SATA_LED,
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MPP15_SATA_LED,
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MPP16_UNUSED,
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MPP17_GPIO, /* power button LED */
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MPP18_GPIO, /* fan speed bit 0 */
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MPP19_GPIO, /* fan speed bit 1 */
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0,
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};
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/* Rev C1 Fan speed notes:
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*
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* The fan is controlled by 2 GPIOs on this board. The settings
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* of the bits is as follow:
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*
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* GPIO 18 GPIO 19 Fan
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*
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* 0 0 stopped
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* 0 1 low speed
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* 1 0 high speed
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* 1 1 don't do that (*)
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*
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* (*) I think the two bits control two feed-in resistors into a fixed
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* PWN circuit, setting both bits will basically go a 'bit' faster
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* than high speed, but d-link doesn't do it and you may get out of
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* HW spec so don't do it.
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*/
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/*
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* On the DNS-323 A1 and B1 the following devices are attached via I2C:
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*
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* i2c addr | chip | description
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* 0x3e | GMT G760Af | fan speed PWM controller
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* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
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* 0x68 | ST M41T80 | RTC w/ alarm
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*/
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static struct i2c_board_info __initdata dns323ab_i2c_devices[] = {
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{
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I2C_BOARD_INFO("g760a", 0x3e),
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}, {
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I2C_BOARD_INFO("lm75", 0x48),
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}, {
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I2C_BOARD_INFO("m41t80", 0x68),
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},
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};
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/*
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* On the DNS-323 C1 the following devices are attached via I2C:
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*
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* i2c addr | chip | description
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* 0x48 | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
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* 0x68 | ST M41T80 | RTC w/ alarm
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*/
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static struct i2c_board_info __initdata dns323c_i2c_devices[] = {
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{
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I2C_BOARD_INFO("lm75", 0x48),
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}, {
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I2C_BOARD_INFO("m41t80", 0x68),
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},
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};
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/* DNS-323 rev. A specific power off method */
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static void dns323a_power_off(void)
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{
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pr_info("DNS-323: Triggering power-off...\n");
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gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
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}
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/* DNS-323 rev B specific power off method */
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static void dns323b_power_off(void)
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{
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pr_info("DNS-323: Triggering power-off...\n");
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/* Pin has to be changed to 1 and back to 0 to do actual power off. */
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gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
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mdelay(100);
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gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
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}
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/* DNS-323 rev. C specific power off method */
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static void dns323c_power_off(void)
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{
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pr_info("DNS-323: Triggering power-off...\n");
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gpio_set_value(DNS323C_GPIO_POWER_OFF, 1);
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}
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static int dns323c_phy_fixup(struct phy_device *phy)
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{
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phy->dev_flags |= MARVELL_PHY_M1118_DNS323_LEDS;
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return 0;
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}
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static int __init dns323_identify_rev(void)
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{
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u32 dev, rev, i, reg;
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pr_debug("DNS-323: Identifying board ... \n");
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/* Rev A1 has a 5181 */
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orion5x_pcie_id(&dev, &rev);
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if (dev == MV88F5181_DEV_ID) {
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pr_debug("DNS-323: 5181 found, board is A1\n");
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return DNS323_REV_A1;
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}
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pr_debug("DNS-323: 5182 found, board is B1 or C1, checking PHY...\n");
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/* Rev B1 and C1 both have 5182, let's poke at the eth PHY. This is
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* a bit gross but we want to do that without links into the eth
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* driver so let's poke at it directly. We default to rev B1 in
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* case the accesses fail
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*/
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#define ETH_SMI_REG (ORION5X_ETH_VIRT_BASE + 0x2000 + 0x004)
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#define SMI_BUSY 0x10000000
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#define SMI_READ_VALID 0x08000000
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#define SMI_OPCODE_READ 0x04000000
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#define SMI_OPCODE_WRITE 0x00000000
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|
|
for (i = 0; i < 1000; i++) {
|
|
reg = readl(ETH_SMI_REG);
|
|
if (!(reg & SMI_BUSY))
|
|
break;
|
|
}
|
|
if (i >= 1000) {
|
|
pr_warn("DNS-323: Timeout accessing PHY, assuming rev B1\n");
|
|
return DNS323_REV_B1;
|
|
}
|
|
writel((3 << 21) /* phy ID reg */ |
|
|
(8 << 16) /* phy addr */ |
|
|
SMI_OPCODE_READ, ETH_SMI_REG);
|
|
for (i = 0; i < 1000; i++) {
|
|
reg = readl(ETH_SMI_REG);
|
|
if (reg & SMI_READ_VALID)
|
|
break;
|
|
}
|
|
if (i >= 1000) {
|
|
pr_warn("DNS-323: Timeout reading PHY, assuming rev B1\n");
|
|
return DNS323_REV_B1;
|
|
}
|
|
pr_debug("DNS-323: Ethernet PHY ID 0x%x\n", reg & 0xffff);
|
|
|
|
/* Note: the Marvell tools mask the ID with 0x3f0 before comparison
|
|
* but I don't see that making a difference here, at least with
|
|
* any known Marvell PHY ID
|
|
*/
|
|
switch(reg & 0xfff0) {
|
|
case 0x0cc0: /* MV88E1111 */
|
|
return DNS323_REV_B1;
|
|
case 0x0e10: /* MV88E1118 */
|
|
return DNS323_REV_C1;
|
|
default:
|
|
pr_warn("DNS-323: Unknown PHY ID 0x%04x, assuming rev B1\n",
|
|
reg & 0xffff);
|
|
}
|
|
return DNS323_REV_B1;
|
|
}
|
|
|
|
static void __init dns323_init(void)
|
|
{
|
|
/* Setup basic Orion functions. Need to be called early. */
|
|
orion5x_init();
|
|
|
|
/* Identify revision */
|
|
system_rev = dns323_identify_rev();
|
|
pr_info("DNS-323: Identified HW revision %c1\n", 'A' + system_rev);
|
|
|
|
/* Just to be tricky, the 5182 has a completely different
|
|
* set of MPP modes to the 5181.
|
|
*/
|
|
switch(system_rev) {
|
|
case DNS323_REV_A1:
|
|
orion5x_mpp_conf(dns323a_mpp_modes);
|
|
writel(0, MPP_DEV_CTRL); /* DEV_D[31:16] */
|
|
break;
|
|
case DNS323_REV_B1:
|
|
orion5x_mpp_conf(dns323b_mpp_modes);
|
|
break;
|
|
case DNS323_REV_C1:
|
|
orion5x_mpp_conf(dns323c_mpp_modes);
|
|
break;
|
|
}
|
|
|
|
/* setup flash mapping
|
|
* CS3 holds a 8 MB Spansion S29GL064M90TFIR4
|
|
*/
|
|
mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
|
|
ORION_MBUS_DEVBUS_BOOT_ATTR,
|
|
DNS323_NOR_BOOT_BASE,
|
|
DNS323_NOR_BOOT_SIZE);
|
|
platform_device_register(&dns323_nor_flash);
|
|
|
|
/* Sort out LEDs, Buttons and i2c devices */
|
|
switch(system_rev) {
|
|
case DNS323_REV_A1:
|
|
/* The 5181 power LED is active low and requires
|
|
* DNS323_GPIO_LED_POWER1 to also be low.
|
|
*/
|
|
dns323ab_leds[0].active_low = 1;
|
|
gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
|
|
gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
|
|
/* Fall through */
|
|
case DNS323_REV_B1:
|
|
i2c_register_board_info(0, dns323ab_i2c_devices,
|
|
ARRAY_SIZE(dns323ab_i2c_devices));
|
|
break;
|
|
case DNS323_REV_C1:
|
|
/* Hookup LEDs & Buttons */
|
|
dns323_gpio_leds.dev.platform_data = &dns323c_led_data;
|
|
dns323_button_device.dev.platform_data = &dns323c_button_data;
|
|
|
|
/* Hookup i2c devices and fan driver */
|
|
i2c_register_board_info(0, dns323c_i2c_devices,
|
|
ARRAY_SIZE(dns323c_i2c_devices));
|
|
platform_device_register_simple("dns323c-fan", 0, NULL, 0);
|
|
|
|
/* Register fixup for the PHY LEDs */
|
|
if (!IS_BUILTIN(CONFIG_PHYLIB))
|
|
break;
|
|
phy_register_fixup_for_uid(MARVELL_PHY_ID_88E1118,
|
|
MARVELL_PHY_ID_MASK,
|
|
dns323c_phy_fixup);
|
|
}
|
|
|
|
platform_device_register(&dns323_gpio_leds);
|
|
platform_device_register(&dns323_button_device);
|
|
|
|
/*
|
|
* Configure peripherals.
|
|
*/
|
|
if (dns323_read_mac_addr() < 0)
|
|
printk("DNS-323: Failed to read MAC address\n");
|
|
orion5x_ehci0_init();
|
|
orion5x_eth_init(&dns323_eth_data);
|
|
orion5x_i2c_init();
|
|
orion5x_uart0_init();
|
|
|
|
/* Remaining GPIOs */
|
|
switch(system_rev) {
|
|
case DNS323_REV_A1:
|
|
/* Poweroff GPIO */
|
|
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
|
|
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
|
|
pr_err("DNS-323: failed to setup power-off GPIO\n");
|
|
pm_power_off = dns323a_power_off;
|
|
break;
|
|
case DNS323_REV_B1:
|
|
/* 5182 built-in SATA init */
|
|
orion5x_sata_init(&dns323_sata_data);
|
|
|
|
/* The DNS323 rev B1 has flag to indicate the system is up.
|
|
* Without this flag set, power LED will flash and cannot be
|
|
* controlled via leds-gpio.
|
|
*/
|
|
if (gpio_request(DNS323_GPIO_SYSTEM_UP, "SYS_READY") == 0)
|
|
gpio_direction_output(DNS323_GPIO_SYSTEM_UP, 1);
|
|
|
|
/* Poweroff GPIO */
|
|
if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
|
|
gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
|
|
pr_err("DNS-323: failed to setup power-off GPIO\n");
|
|
pm_power_off = dns323b_power_off;
|
|
break;
|
|
case DNS323_REV_C1:
|
|
/* 5182 built-in SATA init */
|
|
orion5x_sata_init(&dns323_sata_data);
|
|
|
|
/* Poweroff GPIO */
|
|
if (gpio_request(DNS323C_GPIO_POWER_OFF, "POWEROFF") != 0 ||
|
|
gpio_direction_output(DNS323C_GPIO_POWER_OFF, 0) != 0)
|
|
pr_err("DNS-323: failed to setup power-off GPIO\n");
|
|
pm_power_off = dns323c_power_off;
|
|
|
|
/* Now, -this- should theorically be done by the sata_mv driver
|
|
* once I figure out what's going on there. Maybe the behaviour
|
|
* of the LEDs should be somewhat passed via the platform_data.
|
|
* for now, just whack the register and make the LEDs happy
|
|
*
|
|
* Note: AFAIK, rev B1 needs the same treatement but I'll let
|
|
* somebody else test it.
|
|
*/
|
|
writel(0x5, ORION5X_SATA_VIRT_BASE + 0x2c);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
|
|
MACHINE_START(DNS323, "D-Link DNS-323")
|
|
/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
|
|
.atag_offset = 0x100,
|
|
.init_machine = dns323_init,
|
|
.map_io = orion5x_map_io,
|
|
.init_early = orion5x_init_early,
|
|
.init_irq = orion5x_init_irq,
|
|
.init_time = orion5x_timer_init,
|
|
.fixup = tag_fixup_mem32,
|
|
.restart = orion5x_restart,
|
|
MACHINE_END
|