c194588dba
Allow the board to remap actual USART peripheral devices to serial devices by calling at32_map_usart(hw_id, serial_line). This ensures that even though ATSTK1002 uses USART1 as the first serial port, it will still have a ttyS0 device. This also adds a board-specific early setup hook and moves the at32_setup_serial_console() call there from the platform code. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
87 lines
1.7 KiB
C
87 lines
1.7 KiB
C
/*
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* Copyright (C) 2006 Atmel Corporation
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <asm/io.h>
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#include <asm/arch/init.h>
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#include <asm/arch/sm.h>
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struct at32_sm system_manager;
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static int __init at32_sm_init(void)
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{
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struct resource *regs;
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struct at32_sm *sm = &system_manager;
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int ret = -ENXIO;
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regs = platform_get_resource(&at32_sm_device, IORESOURCE_MEM, 0);
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if (!regs)
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goto fail;
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spin_lock_init(&sm->lock);
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sm->pdev = &at32_sm_device;
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ret = -ENOMEM;
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sm->regs = ioremap(regs->start, regs->end - regs->start + 1);
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if (!sm->regs)
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goto fail;
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return 0;
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fail:
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printk(KERN_ERR "Failed to initialize System Manager: %d\n", ret);
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return ret;
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}
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void __init setup_platform(void)
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{
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at32_sm_init();
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at32_clock_init();
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at32_portmux_init();
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}
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static int __init pdc_probe(struct platform_device *pdev)
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{
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struct clk *pclk, *hclk;
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pclk = clk_get(&pdev->dev, "pclk");
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if (IS_ERR(pclk)) {
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dev_err(&pdev->dev, "no pclk defined\n");
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return PTR_ERR(pclk);
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}
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hclk = clk_get(&pdev->dev, "hclk");
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if (IS_ERR(hclk)) {
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dev_err(&pdev->dev, "no hclk defined\n");
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clk_put(pclk);
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return PTR_ERR(hclk);
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}
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clk_enable(pclk);
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clk_enable(hclk);
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dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
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return 0;
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}
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static struct platform_driver pdc_driver = {
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.probe = pdc_probe,
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.driver = {
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.name = "pdc",
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},
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};
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static int __init pdc_init(void)
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{
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return platform_driver_register(&pdc_driver);
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}
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arch_initcall(pdc_init);
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