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[PATCH] ARM: 2793/1: platform serial support for ixp2000

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Patch from Lennert Buytenhek

This patch converts the ixp2000 serial port over to a platform
serial device.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Lennert Buytenhek 2005-07-10 19:44:53 +01:00 committed by Russell King
parent f179bc77d0
commit 28187f2ce3
5 changed files with 44 additions and 15 deletions
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55
arch/arm/mach-ixp2000/core.c
View file

@ -23,7 +23,7 @@
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/bitops.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mm.h>
#include <asm/types.h>
@ -125,19 +125,6 @@ static struct map_desc ixp2000_io_desc[] __initdata = {
}
};
static struct uart_port ixp2000_serial_port = {
.membase = (char *)(IXP2000_UART_VIRT_BASE + 3),
.mapbase = IXP2000_UART_PHYS_BASE + 3,
.irq = IRQ_IXP2000_UART,
.flags = UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 50000000,
.line = 0,
.type = PORT_XSCALE,
.fifosize = 16
};
void __init ixp2000_map_io(void)
{
extern unsigned int processor_id;
@ -157,12 +144,50 @@ void __init ixp2000_map_io(void)
}
iotable_init(ixp2000_io_desc, ARRAY_SIZE(ixp2000_io_desc));
early_serial_setup(&ixp2000_serial_port);
/* Set slowport to 8-bit mode. */
ixp2000_reg_write(IXP2000_SLOWPORT_FRM, 1);
}
/*************************************************************************
* Serial port support for IXP2000
*************************************************************************/
static struct plat_serial8250_port ixp2000_serial_port[] = {
{
.mapbase = IXP2000_UART_PHYS_BASE,
.membase = (char *)(IXP2000_UART_VIRT_BASE + 3),
.irq = IRQ_IXP2000_UART,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 2,
.uartclk = 50000000,
},
{ },
};
static struct resource ixp2000_uart_resource = {
.start = IXP2000_UART_PHYS_BASE,
.end = IXP2000_UART_PHYS_BASE + 0xffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device ixp2000_serial_device = {
.name = "serial8250",
.id = 0,
.dev = {
.platform_data = ixp2000_serial_port,
},
.num_resources = 1,
.resource = &ixp2000_uart_resource,
};
void __init ixp2000_uart_init(void)
{
platform_device_register(&ixp2000_serial_device);
}
/*************************************************************************
* Timer-tick functions for IXP2000
*************************************************************************/

1
arch/arm/mach-ixp2000/enp2611.c
View file

@ -219,6 +219,7 @@ static struct platform_device *enp2611_devices[] __initdata = {
static void __init enp2611_init_machine(void)
{
platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
ixp2000_uart_init();
}

1
arch/arm/mach-ixp2000/ixdp2x00.c
View file

@ -303,5 +303,6 @@ void __init ixdp2x00_init_machine(void)
gpio_line_config(IXDP2X00_GPIO_I2C_ENABLE, GPIO_OUT);
platform_add_devices(ixdp2x00_devices, ARRAY_SIZE(ixdp2x00_devices));
ixp2000_uart_init();
}

1
arch/arm/mach-ixp2000/ixdp2x01.c
View file

@ -370,6 +370,7 @@ static void __init ixdp2x01_init_machine(void)
((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);
platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
ixp2000_uart_init();
}

1
include/asm-arm/arch-ixp2000/platform.h
View file

@ -115,6 +115,7 @@ static inline unsigned int ixp2000_is_pcimaster(void)
}
void ixp2000_map_io(void);
void ixp2000_uart_init(void);
void ixp2000_init_irq(void);
void ixp2000_init_time(unsigned long);
unsigned long ixp2000_gettimeoffset(void);