46 static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
47 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl);
48 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data);
49 static bool ixgbe_get_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl);
2229 	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_i2c_start()  local
2233 	i2cctl |= IXGBE_I2C_BB_EN_BY_MAC(hw);  in ixgbe_i2c_start()
2236 	ixgbe_set_i2c_data(hw, &i2cctl, 1);  in ixgbe_i2c_start()
2237 	ixgbe_raise_i2c_clk(hw, &i2cctl);  in ixgbe_i2c_start()
2242 	ixgbe_set_i2c_data(hw, &i2cctl, 0);  in ixgbe_i2c_start()
2247 	ixgbe_lower_i2c_clk(hw, &i2cctl);  in ixgbe_i2c_start()
2264 	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_i2c_stop()  local
2272 	ixgbe_set_i2c_data(hw, &i2cctl, 0);  in ixgbe_i2c_stop()
2273 	ixgbe_raise_i2c_clk(hw, &i2cctl);  in ixgbe_i2c_stop()
2278 	ixgbe_set_i2c_data(hw, &i2cctl, 1);  in ixgbe_i2c_stop()
2284 		i2cctl &= ~bb_en_bit;  in ixgbe_i2c_stop()
2285 		i2cctl |= data_oe_bit | clk_oe_bit;  in ixgbe_i2c_stop()
2286 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);  in ixgbe_i2c_stop()
2323 	u32 i2cctl;  in ixgbe_clock_out_i2c_byte()  local
2337 	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_clock_out_i2c_byte()
2338 	i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);  in ixgbe_clock_out_i2c_byte()
2339 	i2cctl |= IXGBE_I2C_DATA_OE_N_EN_BY_MAC(hw);  in ixgbe_clock_out_i2c_byte()
2340 	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);  in ixgbe_clock_out_i2c_byte()
2357 	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_get_i2c_ack()  local
2364 		i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);  in ixgbe_get_i2c_ack()
2365 		i2cctl |= data_oe_bit;  in ixgbe_get_i2c_ack()
2366 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);  in ixgbe_get_i2c_ack()
2369 	ixgbe_raise_i2c_clk(hw, &i2cctl);  in ixgbe_get_i2c_ack()
2377 		i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_get_i2c_ack()
2378 		ack = ixgbe_get_i2c_data(hw, &i2cctl);  in ixgbe_get_i2c_ack()
2390 	ixgbe_lower_i2c_clk(hw, &i2cctl);  in ixgbe_get_i2c_ack()
2407 	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_clock_in_i2c_bit()  local
2413 		i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);  in ixgbe_clock_in_i2c_bit()
2414 		i2cctl |= data_oe_bit;  in ixgbe_clock_in_i2c_bit()
2415 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), i2cctl);  in ixgbe_clock_in_i2c_bit()
2418 	ixgbe_raise_i2c_clk(hw, &i2cctl);  in ixgbe_clock_in_i2c_bit()
2423 	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_clock_in_i2c_bit()
2424 	*data = ixgbe_get_i2c_data(hw, &i2cctl);  in ixgbe_clock_in_i2c_bit()
2426 	ixgbe_lower_i2c_clk(hw, &i2cctl);  in ixgbe_clock_in_i2c_bit()
2442 	u32 i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_clock_out_i2c_bit()  local
2446 	status = ixgbe_set_i2c_data(hw, &i2cctl, data);  in ixgbe_clock_out_i2c_bit()
2448 		ixgbe_raise_i2c_clk(hw, &i2cctl);  in ixgbe_clock_out_i2c_bit()
2453 		ixgbe_lower_i2c_clk(hw, &i2cctl);  in ixgbe_clock_out_i2c_bit()
2476 static void ixgbe_raise_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)  in ixgbe_raise_i2c_clk()  argument
2486 		*i2cctl |= clk_oe_bit;  in ixgbe_raise_i2c_clk()
2487 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);  in ixgbe_raise_i2c_clk()
2491 		*i2cctl |= IXGBE_I2C_CLK_OUT_BY_MAC(hw);  in ixgbe_raise_i2c_clk()
2493 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);  in ixgbe_raise_i2c_clk()
2512 static void ixgbe_lower_i2c_clk(struct ixgbe_hw *hw, u32 *i2cctl)  in ixgbe_lower_i2c_clk()  argument
2516 	*i2cctl &= ~(IXGBE_I2C_CLK_OUT_BY_MAC(hw));  in ixgbe_lower_i2c_clk()
2517 	*i2cctl &= ~IXGBE_I2C_CLK_OE_N_EN_BY_MAC(hw);  in ixgbe_lower_i2c_clk()
2519 	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);  in ixgbe_lower_i2c_clk()
2535 static s32 ixgbe_set_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl, bool data)  in ixgbe_set_i2c_data()  argument
2543 		*i2cctl |= IXGBE_I2C_DATA_OUT_BY_MAC(hw);  in ixgbe_set_i2c_data()
2545 		*i2cctl &= ~(IXGBE_I2C_DATA_OUT_BY_MAC(hw));  in ixgbe_set_i2c_data()
2546 	*i2cctl &= ~data_oe_bit;  in ixgbe_set_i2c_data()
2548 	IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);  in ixgbe_set_i2c_data()
2557 		*i2cctl |= data_oe_bit;  in ixgbe_set_i2c_data()
2558 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);  in ixgbe_set_i2c_data()
2563 	*i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_set_i2c_data()
2564 	if (data != ixgbe_get_i2c_data(hw, i2cctl)) {  in ixgbe_set_i2c_data()
2582 static bool ixgbe_get_i2c_data(struct ixgbe_hw *hw, u32 *i2cctl)  in ixgbe_get_i2c_data()  argument
2590 		*i2cctl |= data_oe_bit;  in ixgbe_get_i2c_data()
2591 		IXGBE_WRITE_REG(hw, IXGBE_I2CCTL_BY_MAC(hw), *i2cctl);  in ixgbe_get_i2c_data()
2596 	if (*i2cctl & IXGBE_I2C_DATA_IN_BY_MAC(hw))  in ixgbe_get_i2c_data()
2613 	u32 i2cctl;  in ixgbe_i2c_bus_clear()  local
2619 	i2cctl = IXGBE_READ_REG(hw, IXGBE_I2CCTL_BY_MAC(hw));  in ixgbe_i2c_bus_clear()
2621 	ixgbe_set_i2c_data(hw, &i2cctl, 1);  in ixgbe_i2c_bus_clear()
2624 		ixgbe_raise_i2c_clk(hw, &i2cctl);  in ixgbe_i2c_bus_clear()
2629 		ixgbe_lower_i2c_clk(hw, &i2cctl);  in ixgbe_i2c_bus_clear()