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[ARM] 3819/1: iop3xx: factor out shared i2c code

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Move the i2c bits shared between iop32x and iop33x to plat-iop/i2c.c
and include/asm-arm/hardware/iop3xx.h.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Lennert Buytenhek 2006-09-18 23:15:21 +01:00 committed by Russell King
parent 7ae1f7ec52
commit e25d64f124
8 changed files with 111 additions and 131 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/arm/mach-iop32x/common.c
View File

@ -14,6 +14,7 @@
#include <linux/delay.h>
#include <asm/hardware.h>
#include <asm/hardware/iop3xx.h>
/*
* Shared variables
@ -39,23 +40,23 @@ void ep80219_power_off(void)
*/
/* Send the Address byte w/ the start condition */
*IOP321_IDBR1 = 0x60;
*IOP321_ICR1 = 0xE9;
*IOP3XX_IDBR1 = 0x60;
*IOP3XX_ICR1 = 0xE9;
mdelay(1);
/* Send the START_MSG byte w/ no start or stop condition */
*IOP321_IDBR1 = 0x0F;
*IOP321_ICR1 = 0xE8;
*IOP3XX_IDBR1 = 0x0F;
*IOP3XX_ICR1 = 0xE8;
mdelay(1);
/* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or stop condition */
*IOP321_IDBR1 = 0x03;
*IOP321_ICR1 = 0xE8;
*IOP3XX_IDBR1 = 0x03;
*IOP3XX_ICR1 = 0xE8;
mdelay(1);
/* Send an ignored byte w/ stop condition */
*IOP321_IDBR1 = 0x00;
*IOP321_ICR1 = 0xEA;
*IOP3XX_IDBR1 = 0x00;
*IOP3XX_ICR1 = 0xEA;
while (1) ;
}

53
arch/arm/mach-iop32x/setup.c
View File

@ -29,6 +29,7 @@
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/hardware/iop3xx.h>
#define IOP321_UART_XTAL 1843200
@ -57,58 +58,10 @@ static struct uart_port iop321_serial_ports[] = {
}
};
static struct resource iop32x_i2c_0_resources[] = {
[0] = {
.start = 0xfffff680,
.end = 0xfffff698,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_IOP321_I2C_0,
.end = IRQ_IOP321_I2C_0,
.flags = IORESOURCE_IRQ
}
};
static struct resource iop32x_i2c_1_resources[] = {
[0] = {
.start = 0xfffff6a0,
.end = 0xfffff6b8,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_IOP321_I2C_1,
.end = IRQ_IOP321_I2C_1,
.flags = IORESOURCE_IRQ
}
};
static struct platform_device iop32x_i2c_0_controller = {
.name = "IOP3xx-I2C",
.id = 0,
.num_resources = 2,
.resource = iop32x_i2c_0_resources
};
static struct platform_device iop32x_i2c_1_controller = {
.name = "IOP3xx-I2C",
.id = 1,
.num_resources = 2,
.resource = iop32x_i2c_1_resources
};
static struct platform_device *iop32x_devices[] __initdata = {
&iop32x_i2c_0_controller,
&iop32x_i2c_1_controller
};
void __init iop32x_init(void)
{
if(iop_is_321())
{
platform_add_devices(iop32x_devices,
ARRAY_SIZE(iop32x_devices));
}
platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device);
early_serial_setup(&iop321_serial_ports[0]);
}

44
arch/arm/mach-iop33x/setup.c
View File

@ -100,51 +100,9 @@ static struct platform_device iop33x_uart1 = {
.resource = iop33x_uart1_resources,
};
static struct resource iop33x_i2c_0_resources[] = {
[0] = {
.start = 0xfffff680,
.end = 0xfffff698,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_IOP331_I2C_0,
.end = IRQ_IOP331_I2C_0,
.flags = IORESOURCE_IRQ
}
};
static struct resource iop33x_i2c_1_resources[] = {
[0] = {
.start = 0xfffff6a0,
.end = 0xfffff6b8,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_IOP331_I2C_1,
.end = IRQ_IOP331_I2C_1,
.flags = IORESOURCE_IRQ
}
};
static struct platform_device iop33x_i2c_0_controller = {
.name = "IOP3xx-I2C",
.id = 0,
.num_resources = 2,
.resource = iop33x_i2c_0_resources
};
static struct platform_device iop33x_i2c_1_controller = {
.name = "IOP3xx-I2C",
.id = 1,
.num_resources = 2,
.resource = iop33x_i2c_1_resources
};
static struct platform_device *iop33x_devices[] __initdata = {
&iop33x_uart0,
&iop33x_uart1,
&iop33x_i2c_0_controller,
&iop33x_i2c_1_controller
};
void __init iop33x_init(void)
@ -154,6 +112,8 @@ void __init iop33x_init(void)
platform_add_devices(iop33x_devices,
ARRAY_SIZE(iop33x_devices));
}
platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device);
}
#ifdef CONFIG_ARCH_IOP33X

2
arch/arm/plat-iop/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
obj-y := setup.o
obj-y := i2c.o setup.o
obj-m :=
obj-n :=
obj- :=

81
arch/arm/plat-iop/i2c.c Normal file
View File

@ -0,0 +1,81 @@
/*
* arch/arm/plat-iop/i2c.c
*
* Author: Nicolas Pitre <nico@cam.org>
* Copyright (C) 2001 MontaVista Software, Inc.
* Copyright (C) 2004 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/fs.h>
#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/mach/map.h>
#include <asm/setup.h>
#include <asm/system.h>
#include <asm/memory.h>
#include <asm/hardware.h>
#include <asm/hardware/iop3xx.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#ifdef CONFIG_ARCH_IOP32X
#define IRQ_IOP3XX_I2C_0 IRQ_IOP321_I2C_0
#define IRQ_IOP3XX_I2C_1 IRQ_IOP321_I2C_1
#endif
#ifdef CONFIG_ARCH_IOP33X
#define IRQ_IOP3XX_I2C_0 IRQ_IOP331_I2C_0
#define IRQ_IOP3XX_I2C_1 IRQ_IOP331_I2C_1
#endif
static struct resource iop3xx_i2c0_resources[] = {
[0] = {
.start = 0xfffff680,
.end = 0xfffff697,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_IOP3XX_I2C_0,
.end = IRQ_IOP3XX_I2C_0,
.flags = IORESOURCE_IRQ,
},
};
struct platform_device iop3xx_i2c0_device = {
.name = "IOP3xx-I2C",
.id = 0,
.num_resources = 2,
.resource = iop3xx_i2c0_resources,
};
static struct resource iop3xx_i2c1_resources[] = {
[0] = {
.start = 0xfffff6a0,
.end = 0xfffff6b7,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = IRQ_IOP3XX_I2C_1,
.end = IRQ_IOP3XX_I2C_1,
.flags = IORESOURCE_IRQ,
}
};
struct platform_device iop3xx_i2c1_device = {
.name = "IOP3xx-I2C",
.id = 1,
.num_resources = 2,
.resource = iop3xx_i2c1_resources,
};

14
include/asm-arm/arch-iop32x/iop321.h
View File

@ -314,20 +314,6 @@
/* SSP serial port unit 0x00001600 - 0x0000167F */
/* I2C bus interface unit 0x00001680 - 0x000016FF */
#define IOP321_ICR0 (volatile u32 *)IOP321_REG_ADDR(0x00001680)
#define IOP321_ISR0 (volatile u32 *)IOP321_REG_ADDR(0x00001684)
#define IOP321_ISAR0 (volatile u32 *)IOP321_REG_ADDR(0x00001688)
#define IOP321_IDBR0 (volatile u32 *)IOP321_REG_ADDR(0x0000168C)
/* Reserved 0x00001690 */
#define IOP321_IBMR0 (volatile u32 *)IOP321_REG_ADDR(0x00001694)
/* Reserved 0x00001698 */
/* Reserved 0x0000169C */
#define IOP321_ICR1 (volatile u32 *)IOP321_REG_ADDR(0x000016A0)
#define IOP321_ISR1 (volatile u32 *)IOP321_REG_ADDR(0x000016A4)
#define IOP321_ISAR1 (volatile u32 *)IOP321_REG_ADDR(0x000016A8)
#define IOP321_IDBR1 (volatile u32 *)IOP321_REG_ADDR(0x000016AC)
#define IOP321_IBMR1 (volatile u32 *)IOP321_REG_ADDR(0x000016B4)
/* Reserved 0x000016B8 through 0x000016FC */
/* for I2C bit defs see drivers/i2c/i2c-iop3xx.h */

16
include/asm-arm/arch-iop33x/iop331.h
View File

@ -311,22 +311,6 @@
/* SSP serial port unit 0x00001600 - 0x0000167F */
/* I2C bus interface unit 0x00001680 - 0x000016FF */
/* for I2C bit defs see drivers/i2c/i2c-iop3xx.h */
#define IOP331_ICR0 (volatile u32 *)IOP331_REG_ADDR(0x00001680)
#define IOP331_ISR0 (volatile u32 *)IOP331_REG_ADDR(0x00001684)
#define IOP331_ISAR0 (volatile u32 *)IOP331_REG_ADDR(0x00001688)
#define IOP331_IDBR0 (volatile u32 *)IOP331_REG_ADDR(0x0000168C)
/* Reserved 0x00001690 */
#define IOP331_IBMR0 (volatile u32 *)IOP331_REG_ADDR(0x00001694)
/* Reserved 0x00001698 */
/* Reserved 0x0000169C */
#define IOP331_ICR1 (volatile u32 *)IOP331_REG_ADDR(0x000016A0)
#define IOP331_ISR1 (volatile u32 *)IOP331_REG_ADDR(0x000016A4)
#define IOP331_ISAR1 (volatile u32 *)IOP331_REG_ADDR(0x000016A8)
#define IOP331_IDBR1 (volatile u32 *)IOP331_REG_ADDR(0x000016AC)
#define IOP331_IBMR1 (volatile u32 *)IOP331_REG_ADDR(0x000016B4)
/* Reserved 0x000016B8 through 0x000016FF */
/* 0x00001700 through 0x0000172C UART 0 */

15
include/asm-arm/hardware/iop3xx.h
View File

@ -23,6 +23,18 @@
#define IOP3XX_PERIPHERAL_SIZE 0x00002000
#define IOP3XX_REG_ADDR(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + (reg))
/* I2C bus interface unit */
#define IOP3XX_ICR0 (volatile u32 *)IOP3XX_REG_ADDR(0x1680)
#define IOP3XX_ISR0 (volatile u32 *)IOP3XX_REG_ADDR(0x1684)
#define IOP3XX_ISAR0 (volatile u32 *)IOP3XX_REG_ADDR(0x1688)
#define IOP3XX_IDBR0 (volatile u32 *)IOP3XX_REG_ADDR(0x168c)
#define IOP3XX_IBMR0 (volatile u32 *)IOP3XX_REG_ADDR(0x1694)
#define IOP3XX_ICR1 (volatile u32 *)IOP3XX_REG_ADDR(0x16a0)
#define IOP3XX_ISR1 (volatile u32 *)IOP3XX_REG_ADDR(0x16a4)
#define IOP3XX_ISAR1 (volatile u32 *)IOP3XX_REG_ADDR(0x16a8)
#define IOP3XX_IDBR1 (volatile u32 *)IOP3XX_REG_ADDR(0x16ac)
#define IOP3XX_IBMR1 (volatile u32 *)IOP3XX_REG_ADDR(0x16b4)
/*
* IOP3XX I/O and Mem space regions for PCI autoconfiguration
@ -37,6 +49,9 @@
#ifndef __ASSEMBLY__
void iop3xx_map_io(void);
extern struct platform_device iop3xx_i2c0_device;
extern struct platform_device iop3xx_i2c1_device;
#endif