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IMX UART: remove statically initialized tables 

This patch removes the statically initialized tables from the i.MX serial
driver and makes the driver fully dependent on the information provided by
the platform_device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2008-07-05 10:02:45 +02:00 committed by Robert Schwebel
parent 2582d8c165
commit dbff4e9ea2
2 changed files with 64 additions and 75 deletions
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10
arch/arm/mach-imx/mx1ads.c
View File

@ -69,6 +69,11 @@ static struct resource imx_uart1_resources[] = {
.end = (UART1_MINT_TX),
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = UART1_MINT_RTS,
.end = UART1_MINT_RTS,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart1_device = {
@ -97,6 +102,11 @@ static struct resource imx_uart2_resources[] = {
.end = (UART2_MINT_TX),
.flags = IORESOURCE_IRQ,
},
[3] = {
.start = UART2_MINT_RTS,
.end = UART2_MINT_RTS,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart2_device = {

129
drivers/serial/imx.c
View File

@ -176,6 +176,8 @@
#define DRIVER_NAME "IMX-uart"
#define UART_NR 8
struct imx_port {
struct uart_port port;
struct timer_list timer;
@ -829,65 +831,7 @@ static struct uart_ops imx_pops = {
.verify_port = imx_verify_port,
};
static struct imx_port imx_ports[] = {
{
.txirq = UART1_MINT_TX,
.rxirq = UART1_MINT_RX,
.rtsirq = UART1_MINT_RTS,
.port = {
.type = PORT_IMX,
.iotype = UPIO_MEM,
.membase = (void *)IMX_UART1_BASE,
.mapbase = 0x00206000,
.irq = UART1_MINT_RX,
.fifosize = 32,
.flags = UPF_BOOT_AUTOCONF,
.ops = &imx_pops,
.line = 0,
},
}, {
.txirq = UART2_MINT_TX,
.rxirq = UART2_MINT_RX,
.rtsirq = UART2_MINT_RTS,
.port = {
.type = PORT_IMX,
.iotype = UPIO_MEM,
.membase = (void *)IMX_UART2_BASE,
.mapbase = 0x00207000,
.irq = UART2_MINT_RX,
.fifosize = 32,
.flags = UPF_BOOT_AUTOCONF,
.ops = &imx_pops,
.line = 1,
},
}
};
/*
* Setup the IMX serial ports.
* Note also that we support "console=ttySMXx" where "x" is either 0 or 1.
* Which serial port this ends up being depends on the machine you're
* running this kernel on. I'm not convinced that this is a good idea,
* but that's the way it traditionally works.
*
*/
static void __init imx_init_ports(void)
{
static int first = 1;
int i;
if (!first)
return;
first = 0;
for (i = 0; i < ARRAY_SIZE(imx_ports); i++) {
init_timer(&imx_ports[i].timer);
imx_ports[i].timer.function = imx_timeout;
imx_ports[i].timer.data = (unsigned long)&imx_ports[i];
imx_ports[i].port.uartclk = imx_get_perclk1();
}
}
static struct imx_port *imx_ports[UART_NR];
#ifdef CONFIG_SERIAL_IMX_CONSOLE
static void imx_console_putchar(struct uart_port *port, int ch)
@ -906,7 +850,7 @@ static void imx_console_putchar(struct uart_port *port, int ch)
static void
imx_console_write(struct console *co, const char *s, unsigned int count)
{
struct imx_port *sport = &imx_ports[co->index];
struct imx_port *sport = imx_ports[co->index];
unsigned int old_ucr1, old_ucr2;
/*
@ -1012,7 +956,7 @@ imx_console_setup(struct console *co, char *options)
*/
if (co->index == -1 || co->index >= ARRAY_SIZE(imx_ports))
co->index = 0;
sport = &imx_ports[co->index];
sport = imx_ports[co->index];
if (options)
uart_parse_options(options, &baud, &parity, &bits, &flow);
@ -1035,14 +979,6 @@ static struct console imx_console = {
.data = &imx_reg,
};
static int __init imx_rs_console_init(void)
{
imx_init_ports();
register_console(&imx_console);
return 0;
}
console_initcall(imx_rs_console_init);
#define IMX_CONSOLE &imx_console
#else
#define IMX_CONSOLE NULL
@ -1080,21 +1016,63 @@ static int serial_imx_resume(struct platform_device *dev)
static int serial_imx_probe(struct platform_device *pdev)
{
struct imx_port *sport;
struct imxuart_platform_data *pdata;
void __iomem *base;
int ret = 0;
struct resource *res;
imx_ports[pdev->id].port.dev = &pdev->dev;
sport = kzalloc(sizeof(*sport), GFP_KERNEL);
if (!sport)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
ret = -ENODEV;
goto free;
}
base = ioremap(res->start, PAGE_SIZE);
if (!base) {
ret = -ENOMEM;
goto free;
}
sport->port.dev = &pdev->dev;
sport->port.mapbase = res->start;
sport->port.membase = base;
sport->port.type = PORT_IMX,
sport->port.iotype = UPIO_MEM;
sport->port.irq = platform_get_irq(pdev, 0);
sport->rxirq = platform_get_irq(pdev, 0);
sport->txirq = platform_get_irq(pdev, 1);
sport->rtsirq = platform_get_irq(pdev, 2);
sport->port.fifosize = 32;
sport->port.ops = &imx_pops;
sport->port.flags = UPF_BOOT_AUTOCONF;
sport->port.line = pdev->id;
init_timer(&sport->timer);
sport->timer.function = imx_timeout;
sport->timer.data = (unsigned long)sport;
sport->port.uartclk = imx_get_perclk1();
imx_ports[pdev->id] = sport;
pdata = pdev->dev.platform_data;
if(pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
imx_ports[pdev->id].have_rtscts = 1;
sport->have_rtscts = 1;
if (pdata->init)
pdata->init(pdev);
uart_add_one_port(&imx_reg, &imx_ports[pdev->id].port);
platform_set_drvdata(pdev, &imx_ports[pdev->id]);
uart_add_one_port(&imx_reg, &sport->port);
platform_set_drvdata(pdev, &sport->port);
return 0;
free:
kfree(sport);
return ret;
}
static int serial_imx_remove(struct platform_device *pdev)
@ -1112,6 +1090,9 @@ static int serial_imx_remove(struct platform_device *pdev)
if (pdata->exit)
pdata->exit(pdev);
iounmap(sport->port.membase);
kfree(sport);
return 0;
}
@ -1133,8 +1114,6 @@ static int __init imx_serial_init(void)
printk(KERN_INFO "Serial: IMX driver\n");
imx_init_ports();
ret = uart_register_driver(&imx_reg);
if (ret)
return ret;