Commit 6b5756f1 authored by Anton Vorontsov's avatar Anton Vorontsov Committed by Greg Kroah-Hartman
Browse files

altera_uart: Add support for getting mapbase and IRQ from resources 



This makes it much easier to integrate the driver with the rest of
the Linux (e.g. MFD subsystem).

The old method is still supported though.

Also, from now on, there is one platform device per port (no
changes are needed for the platform code, as no one registers
the devices anywhere in-tree yet).

Signed-off-by: default avatarAnton Vorontsov <cbouatmailru@gmail.com>
Acked-by: default avatarTobias Klauser <tklauser@distanz.ch>
Cc: Alan Cox <alan@linux.intel.com>,
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 2f8b9c15

drivers/serial/altera_uart.c

+38 −22
Original line number Diff line number Diff line
@@ -498,38 +498,54 @@ static int __devinit altera_uart_probe(struct platform_device *pdev) 
{

	struct altera_uart_platform_uart *platp = pdev->dev.platform_data;

	struct uart_port *port;

	int i;

	struct resource *res_mem;

	struct resource *res_irq;

	int i = pdev->id;



	/* -1 emphasizes that the platform must have one port, no .N suffix */

	if (i == -1)

		i = 0;



	if (i >= CONFIG_SERIAL_ALTERA_UART_MAXPORTS)

		return -EINVAL;



	for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS && platp[i].mapbase; i++) {

	port = &altera_uart_ports[i].port;



	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	if (res_mem)

		port->mapbase = res_mem->start;

	else if (platp->mapbase)

		port->mapbase = platp->mapbase;

	else

		return -EINVAL;



	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (res_irq)

		port->irq = res_irq->start;

	else if (platp->irq)

		port->irq = platp->irq;



	port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE);

	if (!port->membase)

		return -ENOMEM;



	port->line = i;

	port->type = PORT_ALTERA_UART;

		port->mapbase = platp[i].mapbase;

		port->membase = ioremap(port->mapbase, ALTERA_UART_SIZE);

	port->iotype = SERIAL_IO_MEM;

		port->irq = platp[i].irq;

		port->uartclk = platp[i].uartclk;

	port->uartclk = platp->uartclk;

	port->ops = &altera_uart_ops;

	port->flags = ASYNC_BOOT_AUTOCONF;



	uart_add_one_port(&altera_uart_driver, port);

	}



	return 0;

}



static int __devexit altera_uart_remove(struct platform_device *pdev)

{

	struct uart_port *port;

	int i;

	struct uart_port *port = &altera_uart_ports[pdev->id].port;



	for (i = 0; i < CONFIG_SERIAL_ALTERA_UART_MAXPORTS; i++) {

		port = &altera_uart_ports[i].port;

		if (port)

	uart_remove_one_port(&altera_uart_driver, port);

	}



	return 0;

}

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