b7d91a62cb
This commit splits the support code for LogicPD's mx31lite hardware into module and board specific parts. This introduces a new mandatory coreparam called 'mx31lite_baseboard' which specifies the base board support to use. For now, only the LiteKit development board is supported, and developers of own boards are encouraged to use that as reference. The UART support moved to the board code. Some comments were amended along the way. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
164 lines
4.2 KiB
C
164 lines
4.2 KiB
C
/*
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* Copyright (C) 2000 Deep Blue Solutions Ltd
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* Copyright (C) 2002 Shane Nay (shane@minirl.com)
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* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
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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 General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/memory.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/smsc911x.h>
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#include <mach/hardware.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/time.h>
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#include <asm/mach/map.h>
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#include <mach/common.h>
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#include <asm/page.h>
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#include <asm/setup.h>
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#include <mach/board-mx31lite.h>
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#include <mach/imx-uart.h>
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#include <mach/iomux-mx3.h>
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#include <mach/irqs.h>
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#include <mach/mxc_nand.h>
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#include "devices.h"
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/*
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* This file contains the module-specific initialization routines.
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*/
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static unsigned int mx31lite_pins[] = {
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/* LAN9117 IRQ pin */
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IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
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};
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static struct mxc_nand_platform_data mx31lite_nand_board_info = {
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.width = 1,
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.hw_ecc = 1,
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};
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static struct smsc911x_platform_config smsc911x_config = {
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.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
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.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
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.flags = SMSC911X_USE_16BIT,
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};
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static struct resource smsc911x_resources[] = {
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{
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.start = CS4_BASE_ADDR,
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.end = CS4_BASE_ADDR + 0x100,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IOMUX_TO_IRQ(MX31_PIN_SFS6),
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.end = IOMUX_TO_IRQ(MX31_PIN_SFS6),
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device smsc911x_device = {
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.name = "smsc911x",
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.id = -1,
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.num_resources = ARRAY_SIZE(smsc911x_resources),
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.resource = smsc911x_resources,
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.dev = {
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.platform_data = &smsc911x_config,
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},
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};
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/*
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* This structure defines the MX31 memory map.
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*/
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static struct map_desc mx31lite_io_desc[] __initdata = {
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{
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.virtual = SPBA0_BASE_ADDR_VIRT,
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.pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
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.length = SPBA0_SIZE,
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.type = MT_DEVICE_NONSHARED
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}, {
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.virtual = CS4_BASE_ADDR_VIRT,
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.pfn = __phys_to_pfn(CS4_BASE_ADDR),
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.length = CS4_SIZE,
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.type = MT_DEVICE
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}
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};
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/*
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* Set up static virtual mappings.
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*/
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void __init mx31lite_map_io(void)
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{
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mx31_map_io();
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iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
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}
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static int mx31lite_baseboard;
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core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
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static void __init mxc_board_init(void)
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{
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int ret;
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switch (mx31lite_baseboard) {
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case MX31LITE_NOBOARD:
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break;
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case MX31LITE_DB:
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mx31lite_db_init();
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break;
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default:
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printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
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mx31lite_baseboard);
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}
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mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
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"mx31lite");
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mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);
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/* SMSC9117 IRQ pin */
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ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
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if (ret)
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pr_warning("could not get LAN irq gpio\n");
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else {
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gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
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platform_device_register(&smsc911x_device);
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}
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}
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static void __init mx31lite_timer_init(void)
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{
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mx31_clocks_init(26000000);
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}
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struct sys_timer mx31lite_timer = {
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.init = mx31lite_timer_init,
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};
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MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
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/* Maintainer: Freescale Semiconductor, Inc. */
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.phys_io = AIPS1_BASE_ADDR,
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.io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
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.boot_params = PHYS_OFFSET + 0x100,
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.map_io = mx31lite_map_io,
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.init_irq = mx31_init_irq,
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.init_machine = mxc_board_init,
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.timer = &mx31lite_timer,
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MACHINE_END
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