dev/e1000/e1000_82575.c

114 static void e1000_raise_i2c_clk(struct e1000_hw *hw, u32 *i2cctl);
115 static void e1000_lower_i2c_clk(struct e1000_hw *hw, u32 *i2cctl);
116 static s32 e1000_set_i2c_data(struct e1000_hw *hw, u32 *i2cctl, bool data);
117 static bool e1000_get_i2c_data(u32 *i2cctl);
3433 	u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3438 	e1000_set_i2c_data(hw, &i2cctl, 1);
3439 	e1000_raise_i2c_clk(hw, &i2cctl);
3444 	e1000_set_i2c_data(hw, &i2cctl, 0);
3449 	e1000_lower_i2c_clk(hw, &i2cctl);
3464 	u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3469 	e1000_set_i2c_data(hw, &i2cctl, 0);
3470 	e1000_raise_i2c_clk(hw, &i2cctl);
3475 	e1000_set_i2c_data(hw, &i2cctl, 1);
3515 	u32 i2cctl;
3529 	i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3531 	i2cctl |= E1000_I2C_DATA_OE_N;
3532 	E1000_WRITE_REG(hw, E1000_I2CPARAMS, i2cctl);
3548 	u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3554 	e1000_raise_i2c_clk(hw, &i2cctl);
3562 		i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3563 		if (i2cctl & E1000_I2C_CLK_IN)
3566 	if (!(i2cctl & E1000_I2C_CLK_IN))
3569 	ack = e1000_get_i2c_data(&i2cctl);
3575 	e1000_lower_i2c_clk(hw, &i2cctl);
3592 	u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3596 	e1000_raise_i2c_clk(hw, &i2cctl);
3601 	i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3602 	*data = e1000_get_i2c_data(&i2cctl);
3604 	e1000_lower_i2c_clk(hw, &i2cctl);
3622 	u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3626 	status = e1000_set_i2c_data(hw, &i2cctl, data);
3628 		e1000_raise_i2c_clk(hw, &i2cctl);
3633 		e1000_lower_i2c_clk(hw, &i2cctl);
3649  *  @i2cctl: Current value of I2CCTL register
3653 static void e1000_raise_i2c_clk(struct e1000_hw *hw, u32 *i2cctl)
3657 	*i2cctl |= E1000_I2C_CLK_OUT;
3658 	*i2cctl &= ~E1000_I2C_CLK_OE_N;
3659 	E1000_WRITE_REG(hw, E1000_I2CPARAMS, *i2cctl);
3669  *  @i2cctl: Current value of I2CCTL register
3673 static void e1000_lower_i2c_clk(struct e1000_hw *hw, u32 *i2cctl)
3678 	*i2cctl &= ~E1000_I2C_CLK_OUT;
3679 	*i2cctl &= ~E1000_I2C_CLK_OE_N;
3680 	E1000_WRITE_REG(hw, E1000_I2CPARAMS, *i2cctl);
3690  *  @i2cctl: Current value of I2CCTL register
3695 static s32 e1000_set_i2c_data(struct e1000_hw *hw, u32 *i2cctl, bool data)
3702 		*i2cctl |= E1000_I2C_DATA_OUT;
3704 		*i2cctl &= ~E1000_I2C_DATA_OUT;
3706 	*i2cctl &= ~E1000_I2C_DATA_OE_N;
3707 	*i2cctl |= E1000_I2C_CLK_OE_N;
3708 	E1000_WRITE_REG(hw, E1000_I2CPARAMS, *i2cctl);
3714 	*i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3715 	if (data != e1000_get_i2c_data(i2cctl)) {
3726  *  @i2cctl: Current value of I2CCTL register
3730 static bool e1000_get_i2c_data(u32 *i2cctl)
3736 	if (*i2cctl & E1000_I2C_DATA_IN)
3753 	u32 i2cctl = E1000_READ_REG(hw, E1000_I2CPARAMS);
3760 	e1000_set_i2c_data(hw, &i2cctl, 1);
3763 		e1000_raise_i2c_clk(hw, &i2cctl);
3768 		e1000_lower_i2c_clk(hw, &i2cctl);