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Commit 77c8da01 authored by Jayachandran C's avatar Jayachandran C Committed by Ralf Baechle
Browse files

MIPS: Netlogic: Platform changes for XLR/XLS I2C 



Add platform code for XLR/XLS I2C controller and devices. Add
devices on the I2C bus on the XLR/XLS developement boards.

Signed-off-by: default avatarJayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3757/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent 3a2f9b99

arch/mips/configs/nlm_xlr_defconfig

+4 −0
Original line number Diff line number Diff line
@@ -367,6 +367,10 @@ CONFIG_SERIAL_8250_RSA=y 
CONFIG_HW_RANDOM=y

CONFIG_HW_RANDOM_TIMERIOMEM=m

CONFIG_RAW_DRIVER=m

CONFIG_I2C=y

CONFIG_I2C_XLR=y

CONFIG_RTC_CLASS=y

CONFIG_RTC_DRV_DS1374=y

# CONFIG_HWMON is not set

# CONFIG_VGA_CONSOLE is not set

# CONFIG_HID_SUPPORT is not set

arch/mips/netlogic/xlr/platform.c

+51 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/resource.h>

#include <linux/serial_8250.h>

#include <linux/serial_reg.h>

#include <linux/i2c.h>



#include <asm/netlogic/haldefs.h>

#include <asm/netlogic/xlr/iomap.h>
@@ -186,3 +187,53 @@ int xls_platform_usb_init(void) 


arch_initcall(xls_platform_usb_init);

#endif



#ifdef CONFIG_I2C

static struct i2c_board_info nlm_i2c_board_info1[] __initdata = {

	/* All XLR boards have this RTC and Max6657 Temp Chip */

	[0] = {

		.type	= "ds1374",

		.addr	= 0x68

	},

	[1] = {

		.type	= "lm90",

		.addr	= 0x4c

	},

};



static struct resource i2c_resources[] = {

	[0] = {

		.start	= 0,	/* filled at init */

		.end	= 0,

		.flags	= IORESOURCE_MEM,

	},

};



static struct platform_device nlm_xlr_i2c_1 = {

	.name           = "xlr-i2cbus",

	.id             = 1,

	.num_resources	= 1,

	.resource	= i2c_resources,

};



static int __init nlm_i2c_init(void)

{

	int err = 0;

	unsigned int offset;



	/* I2C bus 0 does not have any useful devices, configure only bus 1 */

	offset = NETLOGIC_IO_I2C_1_OFFSET;

	nlm_xlr_i2c_1.resource[0].start = CPHYSADDR(nlm_mmio_base(offset));

	nlm_xlr_i2c_1.resource[0].end = nlm_xlr_i2c_1.resource[0].start + 0xfff;



	platform_device_register(&nlm_xlr_i2c_1);



	err = i2c_register_board_info(1, nlm_i2c_board_info1,

				ARRAY_SIZE(nlm_i2c_board_info1));

	if (err < 0)

		pr_err("nlm-i2c: cannot register board I2C devices\n");

	return err;

}



arch_initcall(nlm_i2c_init);

#endif