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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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ac1a236aaa
Unlike the current code suggests, the RaQ1 actually has an UART. Only the Qube1 (Qube 2700) lacks one. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/*
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* Registration of Cobalt UART platform device.
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*
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* Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <cobalt.h>
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static struct resource cobalt_uart_resource[] __initdata = {
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{
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.start = 0x1c800000,
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.end = 0x1c800007,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = COBALT_SERIAL_IRQ,
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.end = COBALT_SERIAL_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct plat_serial8250_port cobalt_serial8250_port[] = {
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{
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.irq = COBALT_SERIAL_IRQ,
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.uartclk = 18432000,
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.iotype = UPIO_MEM,
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.flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
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.mapbase = 0x1c800000,
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},
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{},
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};
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static __init int cobalt_uart_add(void)
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{
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struct platform_device *pdev;
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int retval;
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/*
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* Cobalt Qube1 has no UART.
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*/
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if (cobalt_board_id == COBALT_BRD_ID_QUBE1)
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return 0;
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pdev = platform_device_alloc("serial8250", -1);
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if (!pdev)
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return -ENOMEM;
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pdev->id = PLAT8250_DEV_PLATFORM;
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pdev->dev.platform_data = cobalt_serial8250_port;
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retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource));
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if (retval)
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goto err_free_device;
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retval = platform_device_add(pdev);
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if (retval)
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goto err_free_device;
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return 0;
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err_free_device:
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platform_device_put(pdev);
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return retval;
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}
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device_initcall(cobalt_uart_add);
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