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[ARM] mv78xx0: wire i2c support

Browse source 
All the pieces were ready, just matter of assembling
them together.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This commit is contained in:
Riku Voipio 2009-03-03 21:13:50 +02:00 committed by Nicolas Pitre
parent 5b99d53483
commit 6935994389
4 changed files with 87 additions and 0 deletions
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76
arch/arm/mach-mv78xx0/common.c
View file

@ -14,6 +14,7 @@
#include <linux/serial_8250.h>
#include <linux/mbus.h>
#include <linux/mv643xx_eth.h>
#include <linux/mv643xx_i2c.h>
#include <linux/ata_platform.h>
#include <linux/ethtool.h>
#include <asm/mach/map.h>
@ -518,6 +519,81 @@ void __init mv78xx0_ge11_init(struct mv643xx_eth_platform_data *eth_data)
platform_device_register(&mv78xx0_ge11);
}
/*****************************************************************************
* I2C bus 0
****************************************************************************/
static struct mv64xxx_i2c_pdata mv78xx0_i2c_0_pdata = {
.freq_m = 8, /* assumes 166 MHz TCLK */
.freq_n = 3,
.timeout = 1000, /* Default timeout of 1 second */
};
static struct resource mv78xx0_i2c_0_resources[] = {
{
.name = "i2c 0 base",
.start = I2C_0_PHYS_BASE,
.end = I2C_0_PHYS_BASE + 0x1f,
.flags = IORESOURCE_MEM,
}, {
.name = "i2c 0 irq",
.start = IRQ_MV78XX0_I2C_0,
.end = IRQ_MV78XX0_I2C_0,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_i2c_0 = {
.name = MV64XXX_I2C_CTLR_NAME,
.id = 0,
.num_resources = ARRAY_SIZE(mv78xx0_i2c_0_resources),
.resource = mv78xx0_i2c_0_resources,
.dev = {
.platform_data = &mv78xx0_i2c_0_pdata,
},
};
/*****************************************************************************
* I2C bus 1
****************************************************************************/
static struct mv64xxx_i2c_pdata mv78xx0_i2c_1_pdata = {
.freq_m = 8, /* assumes 166 MHz TCLK */
.freq_n = 3,
.timeout = 1000, /* Default timeout of 1 second */
};
static struct resource mv78xx0_i2c_1_resources[] = {
{
.name = "i2c 1 base",
.start = I2C_1_PHYS_BASE,
.end = I2C_1_PHYS_BASE + 0x1f,
.flags = IORESOURCE_MEM,
}, {
.name = "i2c 1 irq",
.start = IRQ_MV78XX0_I2C_1,
.end = IRQ_MV78XX0_I2C_1,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device mv78xx0_i2c_1 = {
.name = MV64XXX_I2C_CTLR_NAME,
.id = 1,
.num_resources = ARRAY_SIZE(mv78xx0_i2c_1_resources),
.resource = mv78xx0_i2c_1_resources,
.dev = {
.platform_data = &mv78xx0_i2c_1_pdata,
},
};
void __init mv78xx0_i2c_init(void)
{
platform_device_register(&mv78xx0_i2c_0);
platform_device_register(&mv78xx0_i2c_1);
}
/*****************************************************************************
* SATA

1
arch/arm/mach-mv78xx0/common.h
View file

@ -44,6 +44,7 @@ void mv78xx0_uart0_init(void);
void mv78xx0_uart1_init(void);
void mv78xx0_uart2_init(void);
void mv78xx0_uart3_init(void);
void mv78xx0_i2c_init(void);
extern struct sys_timer mv78xx0_timer;

8
arch/arm/mach-mv78xx0/db78x00-bp-setup.c
View file

@ -14,6 +14,7 @@
#include <linux/ata_platform.h>
#include <linux/mv643xx_eth.h>
#include <linux/ethtool.h>
#include <linux/i2c.h>
#include <mach/mv78xx0.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -39,6 +40,11 @@ static struct mv_sata_platform_data db78x00_sata_data = {
.n_ports = 2,
};
static struct i2c_board_info __initdata db78x00_i2c_rtc = {
I2C_BOARD_INFO("ds1338", 0x68),
};
static void __init db78x00_init(void)
{
/*
@ -60,6 +66,8 @@ static void __init db78x00_init(void)
mv78xx0_sata_init(&db78x00_sata_data);
mv78xx0_uart0_init();
mv78xx0_uart2_init();
mv78xx0_i2c_init();
i2c_register_board_info(0, &db78x00_i2c_rtc, 1);
} else {
mv78xx0_uart1_init();
mv78xx0_uart3_init();

2
arch/arm/mach-mv78xx0/include/mach/mv78xx0.h
View file

@ -102,6 +102,8 @@
#define DEV_BUS_VIRT_BASE (MV78XX0_REGS_VIRT_BASE | 0x10000)
#define SAMPLE_AT_RESET_LOW (DEV_BUS_VIRT_BASE | 0x0030)
#define SAMPLE_AT_RESET_HIGH (DEV_BUS_VIRT_BASE | 0x0034)
#define I2C_0_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x1000)
#define I2C_1_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x1100)
#define UART0_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x2000)
#define UART0_VIRT_BASE (DEV_BUS_VIRT_BASE | 0x2000)
#define UART1_PHYS_BASE (DEV_BUS_PHYS_BASE | 0x2100)