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Linux/arch/avr32/mach-at32ap/pdc.c

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  1 /*
  2  * Copyright (C) 2006 Atmel Corporation
  3  *
  4  * This program is free software; you can redistribute it and/or modify
  5  * it under the terms of the GNU General Public License version 2 as
  6  * published by the Free Software Foundation.
  7  */
  8 
  9 #include <linux/clk.h>
 10 #include <linux/err.h>
 11 #include <linux/init.h>
 12 #include <linux/platform_device.h>
 13 
 14 static int __init pdc_probe(struct platform_device *pdev)
 15 {
 16         struct clk *pclk, *hclk;
 17 
 18         pclk = clk_get(&pdev->dev, "pclk");
 19         if (IS_ERR(pclk)) {
 20                 dev_err(&pdev->dev, "no pclk defined\n");
 21                 return PTR_ERR(pclk);
 22         }
 23         hclk = clk_get(&pdev->dev, "hclk");
 24         if (IS_ERR(hclk)) {
 25                 dev_err(&pdev->dev, "no hclk defined\n");
 26                 clk_put(pclk);
 27                 return PTR_ERR(hclk);
 28         }
 29 
 30         clk_enable(pclk);
 31         clk_enable(hclk);
 32 
 33         dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n");
 34         return 0;
 35 }
 36 
 37 static struct platform_driver pdc_driver = {
 38         .driver         = {
 39                 .name   = "pdc",
 40         },
 41 };
 42 
 43 static int __init pdc_init(void)
 44 {
 45         return platform_driver_probe(&pdc_driver, pdc_probe);
 46 }
 47 arch_initcall(pdc_init);
 48 

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