52 static s32	ixl_set_i2c_data(struct ixl_pf *pf, u32 *i2cctl, bool data);
53 static bool	ixl_get_i2c_data(struct ixl_pf *pf, u32 *i2cctl);
54 static void	ixl_raise_i2c_clk(struct ixl_pf *pf, u32 *i2cctl);
55 static void	ixl_lower_i2c_clk(struct ixl_pf *pf, u32 *i2cctl);
56 static s32	ixl_clock_out_i2c_bit(struct ixl_pf *pf, bool data);
57 static s32	ixl_get_i2c_ack(struct ixl_pf *pf);
58 static s32	ixl_clock_out_i2c_byte(struct ixl_pf *pf, u8 data);
59 static s32	ixl_clock_in_i2c_bit(struct ixl_pf *pf, bool *data);
60 static s32	ixl_clock_in_i2c_byte(struct ixl_pf *pf, u8 *data);
61 static void 	ixl_i2c_bus_clear(struct ixl_pf *pf);
62 static void	ixl_i2c_start(struct ixl_pf *pf);
63 static void	ixl_i2c_stop(struct ixl_pf *pf);
75 ixl_i2c_bus_clear(struct ixl_pf *pf)  in ixl_i2c_bus_clear()  argument
77 	struct i40e_hw *hw = &pf->hw;  in ixl_i2c_bus_clear()
83 	ixl_i2c_start(pf);  in ixl_i2c_bus_clear()
85 	ixl_set_i2c_data(pf, &i2cctl, 1);  in ixl_i2c_bus_clear()
88 		ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_i2c_bus_clear()
93 		ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_i2c_bus_clear()
99 	ixl_i2c_start(pf);  in ixl_i2c_bus_clear()
102 	ixl_i2c_stop(pf);  in ixl_i2c_bus_clear()
112 ixl_i2c_stop(struct ixl_pf *pf)  in ixl_i2c_stop()  argument
114 	struct i40e_hw *hw = &pf->hw;  in ixl_i2c_stop()
120 	ixl_set_i2c_data(pf, &i2cctl, 0);  in ixl_i2c_stop()
121 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_i2c_stop()
126 	ixl_set_i2c_data(pf, &i2cctl, 1);  in ixl_i2c_stop()
140 ixl_clock_in_i2c_byte(struct ixl_pf *pf, u8 *data)  in ixl_clock_in_i2c_byte()  argument
148 		ixl_clock_in_i2c_bit(pf, &bit);  in ixl_clock_in_i2c_byte()
163 ixl_clock_in_i2c_bit(struct ixl_pf *pf, bool *data)  in ixl_clock_in_i2c_bit()  argument
165 	struct i40e_hw *hw = &pf->hw;  in ixl_clock_in_i2c_bit()
170 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_clock_in_i2c_bit()
181 	*data = ixl_get_i2c_data(pf, &i2cctl);  in ixl_clock_in_i2c_bit()
183 	ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_clock_in_i2c_bit()
198 ixl_get_i2c_ack(struct ixl_pf *pf)  in ixl_get_i2c_ack()  argument
200 	struct i40e_hw *hw = &pf->hw;  in ixl_get_i2c_ack()
207 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_get_i2c_ack()
221 		ack = ixl_get_i2c_data(pf, &i2cctl);  in ixl_get_i2c_ack()
229 		ixl_dbg(pf, IXL_DBG_I2C, "I2C ack was not received.\n");  in ixl_get_i2c_ack()
233 	ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_get_i2c_ack()
249 ixl_clock_out_i2c_bit(struct ixl_pf *pf, bool data)  in ixl_clock_out_i2c_bit()  argument
251 	struct i40e_hw *hw = &pf->hw;  in ixl_clock_out_i2c_bit()
255 	status = ixl_set_i2c_data(pf, &i2cctl, data);  in ixl_clock_out_i2c_bit()
257 		ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_clock_out_i2c_bit()
262 		ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_clock_out_i2c_bit()
270 		ixl_dbg(pf, IXL_DBG_I2C, "I2C data was not set to %#x\n", data);  in ixl_clock_out_i2c_bit()
284 ixl_clock_out_i2c_byte(struct ixl_pf *pf, u8 data)  in ixl_clock_out_i2c_byte()  argument
286 	struct i40e_hw *hw = &pf->hw;  in ixl_clock_out_i2c_byte()
296 		status = ixl_clock_out_i2c_bit(pf, bit);  in ixl_clock_out_i2c_byte()
320 ixl_lower_i2c_clk(struct ixl_pf *pf, u32 *i2cctl)  in ixl_lower_i2c_clk()  argument
322 	struct i40e_hw *hw = &pf->hw;  in ixl_lower_i2c_clk()
342 ixl_raise_i2c_clk(struct ixl_pf *pf, u32 *i2cctl)  in ixl_raise_i2c_clk()  argument
344 	struct i40e_hw *hw = &pf->hw;  in ixl_raise_i2c_clk()
372 ixl_get_i2c_data(struct ixl_pf *pf, u32 *i2cctl)  in ixl_get_i2c_data()  argument
393 ixl_set_i2c_data(struct ixl_pf *pf, u32 *i2cctl, bool data)  in ixl_set_i2c_data()  argument
395 	struct i40e_hw *hw = &pf->hw;  in ixl_set_i2c_data()
414 	if (data != ixl_get_i2c_data(pf, i2cctl)) {  in ixl_set_i2c_data()
416 		ixl_dbg(pf, IXL_DBG_I2C, "Error - I2C data was not set to %X.\n", data);  in ixl_set_i2c_data()
427 ixl_i2c_start(struct ixl_pf *pf)  in ixl_i2c_start()  argument
429 	struct i40e_hw *hw = &pf->hw;  in ixl_i2c_start()
435 	ixl_set_i2c_data(pf, &i2cctl, 1);  in ixl_i2c_start()
436 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_i2c_start()
441 	ixl_set_i2c_data(pf, &i2cctl, 0);  in ixl_i2c_start()
446 	ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_i2c_start()
457 ixl_read_i2c_byte_bb(struct ixl_pf *pf, u8 byte_offset,  in ixl_read_i2c_byte_bb()  argument
460 	struct i40e_hw *hw = &pf->hw;  in ixl_read_i2c_byte_bb()
473 		ixl_i2c_start(pf);  in ixl_read_i2c_byte_bb()
476 		status = ixl_clock_out_i2c_byte(pf, dev_addr);  in ixl_read_i2c_byte_bb()
478 			ixl_dbg(pf, IXL_DBG_I2C, "dev_addr clock out error\n");  in ixl_read_i2c_byte_bb()
482 		status = ixl_get_i2c_ack(pf);  in ixl_read_i2c_byte_bb()
484 			ixl_dbg(pf, IXL_DBG_I2C, "dev_addr i2c ack error\n");  in ixl_read_i2c_byte_bb()
488 		status = ixl_clock_out_i2c_byte(pf, byte_offset);  in ixl_read_i2c_byte_bb()
490 			ixl_dbg(pf, IXL_DBG_I2C, "byte_offset clock out error\n");  in ixl_read_i2c_byte_bb()
494 		status = ixl_get_i2c_ack(pf);  in ixl_read_i2c_byte_bb()
496 			ixl_dbg(pf, IXL_DBG_I2C, "byte_offset i2c ack error\n");  in ixl_read_i2c_byte_bb()
500 		ixl_i2c_start(pf);  in ixl_read_i2c_byte_bb()
503 		status = ixl_clock_out_i2c_byte(pf, (dev_addr | 0x1));  in ixl_read_i2c_byte_bb()
507 		status = ixl_get_i2c_ack(pf);  in ixl_read_i2c_byte_bb()
511 		status = ixl_clock_in_i2c_byte(pf, data);  in ixl_read_i2c_byte_bb()
515 		status = ixl_clock_out_i2c_bit(pf, nack);  in ixl_read_i2c_byte_bb()
519 		ixl_i2c_stop(pf);  in ixl_read_i2c_byte_bb()
524 		ixl_i2c_bus_clear(pf);  in ixl_read_i2c_byte_bb()
528 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read error - Retrying\n");  in ixl_read_i2c_byte_bb()
530 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read error\n");  in ixl_read_i2c_byte_bb()
546 ixl_write_i2c_byte_bb(struct ixl_pf *pf, u8 byte_offset,  in ixl_write_i2c_byte_bb()  argument
549 	struct i40e_hw *hw = &pf->hw;  in ixl_write_i2c_byte_bb()
560 		ixl_i2c_start(pf);  in ixl_write_i2c_byte_bb()
562 		status = ixl_clock_out_i2c_byte(pf, dev_addr);  in ixl_write_i2c_byte_bb()
566 		status = ixl_get_i2c_ack(pf);  in ixl_write_i2c_byte_bb()
570 		status = ixl_clock_out_i2c_byte(pf, byte_offset);  in ixl_write_i2c_byte_bb()
574 		status = ixl_get_i2c_ack(pf);  in ixl_write_i2c_byte_bb()
578 		status = ixl_clock_out_i2c_byte(pf, data);  in ixl_write_i2c_byte_bb()
582 		status = ixl_get_i2c_ack(pf);  in ixl_write_i2c_byte_bb()
586 		ixl_i2c_stop(pf);  in ixl_write_i2c_byte_bb()
590 		ixl_i2c_bus_clear(pf);  in ixl_write_i2c_byte_bb()
594 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write error - Retrying\n");  in ixl_write_i2c_byte_bb()
596 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write error\n");  in ixl_write_i2c_byte_bb()
612 ixl_read_i2c_byte_reg(struct ixl_pf *pf, u8 byte_offset,  in ixl_read_i2c_byte_reg()  argument
615 	struct i40e_hw *hw = &pf->hw;  in ixl_read_i2c_byte_reg()
634 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read error\n");  in ixl_read_i2c_byte_reg()
642 ixl_write_i2c_byte_reg(struct ixl_pf *pf, u8 byte_offset,  in ixl_write_i2c_byte_reg()  argument
645 	struct i40e_hw *hw = &pf->hw;  in ixl_write_i2c_byte_reg()
651 	status = ixl_read_i2c_byte_reg(pf, byte_offset + 1, dev_addr, &upperbyte);  in ixl_write_i2c_byte_reg()
670 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write error\n");  in ixl_write_i2c_byte_reg()
700 ixl_read_i2c_byte_aq(struct ixl_pf *pf, u8 byte_offset,  in ixl_read_i2c_byte_aq()  argument
703 	struct i40e_hw *hw = &pf->hw;  in ixl_read_i2c_byte_aq()
714 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read status %s, error %s\n",  in ixl_read_i2c_byte_aq()
726 ixl_write_i2c_byte_aq(struct ixl_pf *pf, u8 byte_offset,  in ixl_write_i2c_byte_aq()  argument
729 	struct i40e_hw *hw = &pf->hw;  in ixl_write_i2c_byte_aq()
739 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write status %s, error %s\n",  in ixl_write_i2c_byte_aq()