210b94e864
Now the needed structs are allocated dynamically from __init code reducing memory usage if the kernel runs on a board different from a9m9750dev. Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
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* arch/arm/mach-ns9xxx/plat-serial8250.c
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*
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* Copyright (C) 2008 by Digi International Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*/
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <asm/arch-ns9xxx/regs-board-a9m9750dev.h>
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#include <asm/arch-ns9xxx/board.h>
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#define DRIVER_NAME "serial8250"
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static int __init ns9xxx_plat_serial8250_init(void)
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{
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struct plat_serial8250_port *pdata;
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struct platform_device *pdev;
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int ret = -ENOMEM;
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int i;
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if (!board_is_a9m9750dev())
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return -ENODEV;
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pdev = platform_device_alloc(DRIVER_NAME, 0);
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if (!pdev)
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goto err;
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pdata = kzalloc(5 * sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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goto err;
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pdev->dev.platform_data = pdata;
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pdata[0].iobase = FPGA_UARTA_BASE;
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pdata[1].iobase = FPGA_UARTB_BASE;
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pdata[2].iobase = FPGA_UARTC_BASE;
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pdata[3].iobase = FPGA_UARTD_BASE;
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for (i = 0; i < 4; ++i) {
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pdata[i].membase = (void __iomem *)pdata[i].iobase;
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pdata[i].mapbase = pdata[i].iobase;
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pdata[i].iotype = UPIO_MEM;
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pdata[i].uartclk = 18432000;
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pdata[i].flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
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}
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pdata[0].irq = IRQ_FPGA_UARTA;
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pdata[1].irq = IRQ_FPGA_UARTB;
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pdata[2].irq = IRQ_FPGA_UARTC;
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pdata[3].irq = IRQ_FPGA_UARTD;
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ret = platform_device_add(pdev);
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if (ret) {
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err:
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platform_device_put(pdev);
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printk(KERN_WARNING "Could not add %s (errno=%d)\n",
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DRIVER_NAME, ret);
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}
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return 0;
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}
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arch_initcall(ns9xxx_plat_serial8250_init);
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