forked from luck/tmp_suning_uos_patched
28eb0e4661
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* Copyright (C) 2004-2007 Cavium Networks
|
|
*/
|
|
#include <linux/console.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_8250.h>
|
|
#include <linux/serial_reg.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/irq.h>
|
|
|
|
#include <asm/time.h>
|
|
|
|
#include <asm/octeon/octeon.h>
|
|
|
|
#define DEBUG_UART 1
|
|
|
|
unsigned int octeon_serial_in(struct uart_port *up, int offset)
|
|
{
|
|
int rv = cvmx_read_csr((uint64_t)(up->membase + (offset << 3)));
|
|
if (offset == UART_IIR && (rv & 0xf) == 7) {
|
|
/* Busy interrupt, read the USR (39) and try again. */
|
|
cvmx_read_csr((uint64_t)(up->membase + (39 << 3)));
|
|
rv = cvmx_read_csr((uint64_t)(up->membase + (offset << 3)));
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void octeon_serial_out(struct uart_port *up, int offset, int value)
|
|
{
|
|
/*
|
|
* If bits 6 or 7 of the OCTEON UART's LCR are set, it quits
|
|
* working.
|
|
*/
|
|
if (offset == UART_LCR)
|
|
value &= 0x9f;
|
|
cvmx_write_csr((uint64_t)(up->membase + (offset << 3)), (u8)value);
|
|
}
|
|
|
|
static int octeon_serial_probe(struct platform_device *pdev)
|
|
{
|
|
int irq, res;
|
|
struct resource *res_mem;
|
|
struct uart_8250_port up;
|
|
|
|
/* All adaptors have an irq. */
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
memset(&up, 0, sizeof(up));
|
|
|
|
up.port.flags = ASYNC_SKIP_TEST | UPF_SHARE_IRQ | UPF_FIXED_TYPE;
|
|
up.port.type = PORT_OCTEON;
|
|
up.port.iotype = UPIO_MEM;
|
|
up.port.regshift = 3;
|
|
up.port.dev = &pdev->dev;
|
|
|
|
if (octeon_is_simulation())
|
|
/* Make simulator output fast*/
|
|
up.port.uartclk = 115200 * 16;
|
|
else
|
|
up.port.uartclk = octeon_get_io_clock_rate();
|
|
|
|
up.port.serial_in = octeon_serial_in;
|
|
up.port.serial_out = octeon_serial_out;
|
|
up.port.irq = irq;
|
|
|
|
res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (res_mem == NULL) {
|
|
dev_err(&pdev->dev, "found no memory resource\n");
|
|
return -ENXIO;
|
|
}
|
|
up.port.mapbase = res_mem->start;
|
|
up.port.membase = ioremap(res_mem->start, resource_size(res_mem));
|
|
|
|
res = serial8250_register_8250_port(&up);
|
|
|
|
return res >= 0 ? 0 : res;
|
|
}
|
|
|
|
static struct of_device_id octeon_serial_match[] = {
|
|
{
|
|
.compatible = "cavium,octeon-3860-uart",
|
|
},
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, octeon_serial_match);
|
|
|
|
static struct platform_driver octeon_serial_driver = {
|
|
.probe = octeon_serial_probe,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "octeon_serial",
|
|
.of_match_table = octeon_serial_match,
|
|
},
|
|
};
|
|
|
|
static int __init octeon_serial_init(void)
|
|
{
|
|
return platform_driver_register(&octeon_serial_driver);
|
|
}
|
|
late_initcall(octeon_serial_init);
|