Shared_tod_mcp7940m_rtc

RTC driver for the MCP7940M. More...

Files
file	mcp7940m-rtc.h
	This file provides the interfaces of Shared_tod_mcp7940m_rtc.
file	mcp7940m.c
	This file provides the interfaces of Shared_tod_mcp7940m_rtc.

Data Structures
struct	mcp7940m_rtc

Macros
#define	MCP7940M_RTC_INITIALIZER(i2c_path, i2c_address, has_crystal)
#define	MCP7940M_RTC_TBL_ENTRY(dev_name, mcp7940m_rtc_ctx)    I2C_RTC_TBL_ENTRY(dev_name, mcp7940m_rtc_ctx)

Functions
int	mcp7940m_hw_init (struct i2c_rtc_base *base)

Detailed Description

RTC driver for the MCP7940M.

To use this driver, use the following initialization:

Define a context for the RTC somewhere:

static struct mcp7940m_rtc rtc_ctx = MCP7940M_RTC_INITIALIZER("/dev/i2c-1", 0x6F, true);

Then you can use the following for the RTC_Table:

MCP7940M_RTC_TBL_ENTRY("/dev/rtc", &rtc_ctx)

Macro Definition Documentation

MCP7940M_RTC_INITIALIZER

#define MCP7940M_RTC_INITIALIZER	(		i2c_path,
			i2c_address,
			has_crystal
	)

Value:

    { \
    .base = I2C_RTC_INITIALIZER( \
        i2c_path, \
        i2c_address, \
        0, \
        I2C_RTC_ORDER_sec_min_hour_wkday_day_month_year, \
        "mcp7940", \
        mcp7940m_hw_init), \
    .crystal = has_crystal, \
  }

Function Documentation

mcp7940m_hw_init()

int mcp7940m_hw_init

(

struct i2c_rtc_base *

base

)

Hardware init. Used internally.