Commit 260a127b authored by Lee Jones's avatar Lee Jones
Browse files

mfd: 88pm860x-i2c: Purge unused functions 



The following functions appear to be unused since v2.6.39:

  pm860x_page_reg_read()
  pm860x_page_bulk_write()
  pm860x_page_set_bits()

Let's remove them.

Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent fea31042

drivers/mfd/88pm860x-i2c.c

+0 −64
Original line number Diff line number Diff line
@@ -140,26 +140,6 @@ static int write_device(struct i2c_client *i2c, int reg, 
	return 0;

}



int pm860x_page_reg_read(struct i2c_client *i2c, int reg)

{

	unsigned char zero = 0;

	unsigned char data;

	int ret;



	i2c_lock_adapter(i2c->adapter);

	read_device(i2c, 0xFA, 0, &zero);

	read_device(i2c, 0xFB, 0, &zero);

	read_device(i2c, 0xFF, 0, &zero);

	ret = read_device(i2c, reg, 1, &data);

	if (ret >= 0)

		ret = (int)data;

	read_device(i2c, 0xFE, 0, &zero);

	read_device(i2c, 0xFC, 0, &zero);

	i2c_unlock_adapter(i2c->adapter);

	return ret;

}

EXPORT_SYMBOL(pm860x_page_reg_read);



int pm860x_page_reg_write(struct i2c_client *i2c, int reg,

			  unsigned char data)

{
@@ -195,47 +175,3 @@ int pm860x_page_bulk_read(struct i2c_client *i2c, int reg, 
	return ret;

}

EXPORT_SYMBOL(pm860x_page_bulk_read);
 


int pm860x_page_bulk_write(struct i2c_client *i2c, int reg,

			   int count, unsigned char *buf)

{

	unsigned char zero = 0;

	int ret;



	i2c_lock_adapter(i2c->adapter);

	read_device(i2c, 0xFA, 0, &zero);

	read_device(i2c, 0xFB, 0, &zero);

	read_device(i2c, 0xFF, 0, &zero);

	ret = write_device(i2c, reg, count, buf);

	read_device(i2c, 0xFE, 0, &zero);

	read_device(i2c, 0xFC, 0, &zero);

	i2c_unlock_adapter(i2c->adapter);

	i2c_unlock_adapter(i2c->adapter);

	return ret;

}

EXPORT_SYMBOL(pm860x_page_bulk_write);



int pm860x_page_set_bits(struct i2c_client *i2c, int reg,

			 unsigned char mask, unsigned char data)

{

	unsigned char zero;

	unsigned char value;

	int ret;



	i2c_lock_adapter(i2c->adapter);

	read_device(i2c, 0xFA, 0, &zero);

	read_device(i2c, 0xFB, 0, &zero);

	read_device(i2c, 0xFF, 0, &zero);

	ret = read_device(i2c, reg, 1, &value);

	if (ret < 0)

		goto out;

	value &= ~mask;

	value |= data;

	ret = write_device(i2c, reg, 1, &value);

out:

	read_device(i2c, 0xFE, 0, &zero);

	read_device(i2c, 0xFC, 0, &zero);

	i2c_unlock_adapter(i2c->adapter);

	return ret;

}

EXPORT_SYMBOL(pm860x_page_set_bits);

CRA Git | Maintained and supported by SUSTech CRA and CCSE