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serial/arc: remove earlyprintk support and switch to earlycon 

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vineet Gupta 2014-06-24 13:55:10 +05:30 committed by Greg Kroah-Hartman
parent 27cfe4ec17
commit 2e6fb7cbd0
2 changed files with 13 additions and 76 deletions
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2
arch/arc/boot/dts/angel4.dts
View File

@ -17,7 +17,7 @@
interrupt-parent = <&intc>;
chosen {
bootargs = "console=ttyARC0,115200n8 earlyprintk=ttyARC0";
bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8";
};
aliases {

87
drivers/tty/serial/arc_uart.c
View File

@ -492,33 +492,23 @@ static int
arc_uart_init_one(struct platform_device *pdev, int dev_id)
{
struct resource *res, *res2;
unsigned long *plat_data;
struct arc_uart_port *uart = &arc_uart_ports[dev_id];
struct uart_port *port = &uart->port;
plat_data = dev_get_platdata(&pdev->dev);
if (!plat_data)
return -ENODEV;
struct device_node *np = pdev->dev.of_node;
u32 val;
if (is_early_platform_device(pdev)) {
port->uartclk = plat_data[1];
uart->baud = plat_data[2];
} else {
struct device_node *np = pdev->dev.of_node;
u32 val;
if (of_property_read_u32(np, "clock-frequency", &val)) {
dev_err(&pdev->dev, "clock-frequency property NOTset\n");
return -EINVAL;
}
port->uartclk = val;
if (of_property_read_u32(np, "current-speed", &val)) {
dev_err(&pdev->dev, "current-speed property NOT set\n");
return -EINVAL;
}
uart->baud = val;
if (of_property_read_u32(np, "clock-frequency", &val)) {
dev_err(&pdev->dev, "clock-frequency property NOTset\n");
return -EINVAL;
}
port->uartclk = val;
if (of_property_read_u32(np, "current-speed", &val)) {
dev_err(&pdev->dev, "current-speed property NOT set\n");
return -EINVAL;
}
uart->baud = val;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
@ -607,38 +597,6 @@ static struct console arc_console = {
.data = &arc_uart_driver
};
static __init void early_serial_write(struct console *con, const char *s,
unsigned int n)
{
struct uart_port *port = &arc_uart_ports[con->index].port;
uart_console_write(port, s, n, arc_serial_poll_putchar);
}
static struct console arc_early_serial_console __initdata = {
.name = "early_ARCuart",
.write = early_serial_write,
.flags = CON_PRINTBUFFER | CON_BOOT,
.index = -1
};
static int __init arc_serial_probe_earlyprintk(struct platform_device *pdev)
{
int dev_id = pdev->id < 0 ? 0 : pdev->id;
int rc;
arc_early_serial_console.index = dev_id;
rc = arc_uart_init_one(pdev, dev_id);
if (rc)
panic("early console init failed\n");
arc_serial_console_setup(&arc_early_serial_console, NULL);
register_console(&arc_early_serial_console);
return 0;
}
static __init void arc_early_serial_write(struct console *con, const char *s,
unsigned int n)
{
@ -713,27 +671,6 @@ static struct platform_driver arc_platform_driver = {
},
};
#ifdef CONFIG_SERIAL_ARC_CONSOLE
static struct platform_driver early_arc_platform_driver __initdata = {
.probe = arc_serial_probe_earlyprintk,
.remove = arc_serial_remove,
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
},
};
/*
* Register an early platform driver of "earlyprintk" class.
* ARCH platform code installs the driver and probes the early devices
* The installation could rely on user specifying earlyprintk=xyx in cmd line
* or it could be done independently, for all "earlyprintk" class drivers.
* [see arch/arc/plat-arcfpga/platform.c]
*/
early_platform_init("earlyprintk", &early_arc_platform_driver);
#endif /* CONFIG_SERIAL_ARC_CONSOLE */
static int __init arc_serial_init(void)
{
int ret;