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[ARM] 3490/1: i.MX: move uart resources to board files 

Patch from Sascha Hauer

This patch moves the i.MX uart resources and the gpio pin setup to the
board files. This allows the boards to decide how many internal uarts
are connected to the outside world and whether they use rts/cts or
not.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Sascha Hauer 2006-05-04 14:07:42 +01:00 committed by Russell King
parent b2556da55f
commit 5b80234435
4 changed files with 100 additions and 76 deletions
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52
arch/arm/mach-imx/generic.c
View File

@ -195,56 +195,6 @@ void __init imx_set_mmc_info(struct imxmmc_platform_data *info)
}
EXPORT_SYMBOL(imx_set_mmc_info);
static struct resource imx_uart1_resources[] = {
[0] = {
.start = 0x00206000,
.end = 0x002060FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (UART1_MINT_RX),
.end = (UART1_MINT_RX),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = (UART1_MINT_TX),
.end = (UART1_MINT_TX),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart1_device = {
.name = "imx-uart",
.id = 0,
.num_resources = ARRAY_SIZE(imx_uart1_resources),
.resource = imx_uart1_resources,
};
static struct resource imx_uart2_resources[] = {
[0] = {
.start = 0x00207000,
.end = 0x002070FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (UART2_MINT_RX),
.end = (UART2_MINT_RX),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = (UART2_MINT_TX),
.end = (UART2_MINT_TX),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart2_device = {
.name = "imx-uart",
.id = 1,
.num_resources = ARRAY_SIZE(imx_uart2_resources),
.resource = imx_uart2_resources,
};
static struct imxfb_mach_info imx_fb_info;
void __init set_imx_fb_info(struct imxfb_mach_info *hard_imx_fb_info)
@ -283,8 +233,6 @@ static struct platform_device imxfb_device = {
static struct platform_device *devices[] __initdata = {
&imx_mmc_device,
&imxfb_device,
&imx_uart1_device,
&imx_uart2_device,
};
static struct map_desc imx_io_desc[] __initdata = {

74
arch/arm/mach-imx/mx1ads.c
View File

@ -26,6 +26,7 @@
#include <asm/mach/arch.h>
#include <asm/arch/mmc.h>
#include <asm/arch/imx-uart.h>
#include <linux/interrupt.h>
#include "generic.h"
@ -48,8 +49,70 @@ static struct platform_device cs89x0_device = {
.resource = cs89x0_resources,
};
static struct imxuart_platform_data uart_pdata = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct resource imx_uart1_resources[] = {
[0] = {
.start = 0x00206000,
.end = 0x002060FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (UART1_MINT_RX),
.end = (UART1_MINT_RX),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = (UART1_MINT_TX),
.end = (UART1_MINT_TX),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart1_device = {
.name = "imx-uart",
.id = 0,
.num_resources = ARRAY_SIZE(imx_uart1_resources),
.resource = imx_uart1_resources,
.dev = {
.platform_data = &uart_pdata,
}
};
static struct resource imx_uart2_resources[] = {
[0] = {
.start = 0x00207000,
.end = 0x002070FF,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = (UART2_MINT_RX),
.end = (UART2_MINT_RX),
.flags = IORESOURCE_IRQ,
},
[2] = {
.start = (UART2_MINT_TX),
.end = (UART2_MINT_TX),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device imx_uart2_device = {
.name = "imx-uart",
.id = 1,
.num_resources = ARRAY_SIZE(imx_uart2_resources),
.resource = imx_uart2_resources,
.dev = {
.platform_data = &uart_pdata,
}
};
static struct platform_device *devices[] __initdata = {
&cs89x0_device,
&imx_uart1_device,
&imx_uart2_device,
};
#ifdef CONFIG_MMC_IMX
@ -75,6 +138,17 @@ mx1ads_init(void)
imx_gpio_mode(GPIO_PORTB | GPIO_GIUS | GPIO_IN | 20);
imx_set_mmc_info(&mx1ads_mmc_info);
#endif
imx_gpio_mode(PC9_PF_UART1_CTS);
imx_gpio_mode(PC10_PF_UART1_RTS);
imx_gpio_mode(PC11_PF_UART1_TXD);
imx_gpio_mode(PC12_PF_UART1_RXD);
imx_gpio_mode(PB28_PF_UART2_CTS);
imx_gpio_mode(PB29_PF_UART2_RTS);
imx_gpio_mode(PB30_PF_UART2_TXD);
imx_gpio_mode(PB31_PF_UART2_RXD);
platform_add_devices(devices, ARRAY_SIZE(devices));
}

40
drivers/serial/imx.c
View File

@ -45,6 +45,7 @@
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/arch/imx-uart.h>
/* We've been assigned a range on the "Low-density serial ports" major */
#define SERIAL_IMX_MAJOR 204
@ -73,7 +74,8 @@ struct imx_port {
struct uart_port port;
struct timer_list timer;
unsigned int old_status;
int txirq,rxirq,rtsirq;
int txirq,rxirq,rtsirq;
int have_rtscts:1;
};
/*
@ -491,8 +493,12 @@ imx_set_termios(struct uart_port *port, struct termios *termios,
ucr2 = UCR2_SRST | UCR2_IRTS;
if (termios->c_cflag & CRTSCTS) {
ucr2 &= ~UCR2_IRTS;
ucr2 |= UCR2_CTSC;
if( sport->have_rtscts ) {
ucr2 &= ~UCR2_IRTS;
ucr2 |= UCR2_CTSC;
} else {
termios->c_cflag &= ~CRTSCTS;
}
}
if (termios->c_cflag & CSTOPB)
@ -719,27 +725,6 @@ static void __init imx_init_ports(void)
imx_ports[i].timer.function = imx_timeout;
imx_ports[i].timer.data = (unsigned long)&imx_ports[i];
}
imx_gpio_mode(PC9_PF_UART1_CTS);
imx_gpio_mode(PC10_PF_UART1_RTS);
imx_gpio_mode(PC11_PF_UART1_TXD);
imx_gpio_mode(PC12_PF_UART1_RXD);
imx_gpio_mode(PB28_PF_UART2_CTS);
imx_gpio_mode(PB29_PF_UART2_RTS);
imx_gpio_mode(PB30_PF_UART2_TXD);
imx_gpio_mode(PB31_PF_UART2_RXD);
#if 0 /* We don't need these, on the mx1 the _modem_ side of the uart
* is implemented.
*/
imx_gpio_mode(PD7_AF_UART2_DTR);
imx_gpio_mode(PD8_AF_UART2_DCD);
imx_gpio_mode(PD9_AF_UART2_RI);
imx_gpio_mode(PD10_AF_UART2_DSR);
#endif
}
#ifdef CONFIG_SERIAL_IMX_CONSOLE
@ -932,7 +917,14 @@ static int serial_imx_resume(struct platform_device *dev)
static int serial_imx_probe(struct platform_device *dev)
{
struct imxuart_platform_data *pdata;
imx_ports[dev->id].port.dev = &dev->dev;
pdata = (struct imxuart_platform_data *)dev->dev.platform_data;
if(pdata && (pdata->flags & IMXUART_HAVE_RTSCTS))
imx_ports[dev->id].have_rtscts = 1;
uart_add_one_port(&imx_reg, &imx_ports[dev->id].port);
platform_set_drvdata(dev, &imx_ports[dev->id]);
return 0;

10
include/asm-arm/arch-imx/imx-uart.h Normal file
View File

@ -0,0 +1,10 @@
#ifndef ASMARM_ARCH_UART_H
#define ASMARM_ARCH_UART_H
#define IMXUART_HAVE_RTSCTS (1<<0)
struct imxuart_platform_data {
unsigned int flags;
};
#endif