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| author | Jayachandran C <jayachandranc@netlogicmicro.com> | 2012-07-24 17:28:54 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2012-07-24 17:28:54 +0200 |
| commit | 77c8da014afcc0ea7a522faad1824771dbe21577 (patch) | |
| tree | 833a3623546f42933357ffddc1dead9d55e7f6b7 | |
| parent | 3a2f9b99058cbe3f1b01297d29dc5b376563f670 (diff) | |
| download | talos-obmc-linux-77c8da014afcc0ea7a522faad1824771dbe21577.tar.gz talos-obmc-linux-77c8da014afcc0ea7a522faad1824771dbe21577.zip | |
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: Jayachandran C <jayachandranc@netlogicmicro.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3757/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/configs/nlm_xlr_defconfig | 4 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlr/platform.c | 51 |
2 files changed, 55 insertions, 0 deletions
diff --git a/arch/mips/configs/nlm_xlr_defconfig b/arch/mips/configs/nlm_xlr_defconfig index d0b857d98c91..138f698d7c00 100644 --- a/arch/mips/configs/nlm_xlr_defconfig +++ b/arch/mips/configs/nlm_xlr_defconfig @@ -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 diff --git a/arch/mips/netlogic/xlr/platform.c b/arch/mips/netlogic/xlr/platform.c index cb0ab63089db..71b44d82621d 100644 --- a/arch/mips/netlogic/xlr/platform.c +++ b/arch/mips/netlogic/xlr/platform.c @@ -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 |
