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Diffstat (limited to 'arch/mips/netlogic/xlp/platform.c')
| -rw-r--r-- | arch/mips/netlogic/xlp/platform.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/platform.c b/arch/mips/netlogic/xlp/platform.c new file mode 100644 index 000000000000..1f5e4cba891d --- /dev/null +++ b/arch/mips/netlogic/xlp/platform.c @@ -0,0 +1,108 @@ +/* + * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights + * reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the NetLogic + * license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/serial.h> +#include <linux/serial_8250.h> +#include <linux/pci.h> +#include <linux/serial_reg.h> +#include <linux/spinlock.h> + +#include <asm/time.h> +#include <asm/addrspace.h> +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/pic.h> +#include <asm/netlogic/xlp-hal/uart.h> + +static unsigned int nlm_xlp_uart_in(struct uart_port *p, int offset) +{ + return nlm_read_reg(p->iobase, offset); +} + +static void nlm_xlp_uart_out(struct uart_port *p, int offset, int value) +{ + nlm_write_reg(p->iobase, offset, value); +} + +#define PORT(_irq) \ + { \ + .irq = _irq, \ + .regshift = 2, \ + .iotype = UPIO_MEM32, \ + .flags = (UPF_SKIP_TEST|UPF_FIXED_TYPE|\ + UPF_BOOT_AUTOCONF), \ + .uartclk = XLP_IO_CLK, \ + .type = PORT_16550A, \ + .serial_in = nlm_xlp_uart_in, \ + .serial_out = nlm_xlp_uart_out, \ + } + +static struct plat_serial8250_port xlp_uart_data[] = { + PORT(PIC_UART_0_IRQ), + PORT(PIC_UART_1_IRQ), + {}, +}; + +static struct platform_device uart_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM, + .dev = { + .platform_data = xlp_uart_data, + }, +}; + +static int __init nlm_platform_uart_init(void) +{ + unsigned long mmio; + + mmio = (unsigned long)nlm_get_uart_regbase(0, 0); + xlp_uart_data[0].iobase = mmio; + xlp_uart_data[0].membase = (void __iomem *)mmio; + xlp_uart_data[0].mapbase = mmio; + + mmio = (unsigned long)nlm_get_uart_regbase(0, 1); + xlp_uart_data[1].iobase = mmio; + xlp_uart_data[1].membase = (void __iomem *)mmio; + xlp_uart_data[1].mapbase = mmio; + + return platform_device_register(&uart_device); +} + +arch_initcall(nlm_platform_uart_init); |