51 static s32	ixl_set_i2c_data(struct ixl_pf *pf, u32 *i2cctl, bool data);
52 static bool	ixl_get_i2c_data(struct ixl_pf *pf, u32 *i2cctl);
53 static void	ixl_raise_i2c_clk(struct ixl_pf *pf, u32 *i2cctl);
54 static void	ixl_lower_i2c_clk(struct ixl_pf *pf, u32 *i2cctl);
55 static s32	ixl_clock_out_i2c_bit(struct ixl_pf *pf, bool data);
56 static s32	ixl_get_i2c_ack(struct ixl_pf *pf);
57 static s32	ixl_clock_out_i2c_byte(struct ixl_pf *pf, u8 data);
58 static s32	ixl_clock_in_i2c_bit(struct ixl_pf *pf, bool *data);
59 static s32	ixl_clock_in_i2c_byte(struct ixl_pf *pf, u8 *data);
60 static void 	ixl_i2c_bus_clear(struct ixl_pf *pf);
61 static void	ixl_i2c_start(struct ixl_pf *pf);
62 static void	ixl_i2c_stop(struct ixl_pf *pf);
74 ixl_i2c_bus_clear(struct ixl_pf *pf)  in ixl_i2c_bus_clear()  argument
76 	struct i40e_hw *hw = &pf->hw;  in ixl_i2c_bus_clear()
82 	ixl_i2c_start(pf);  in ixl_i2c_bus_clear()
84 	ixl_set_i2c_data(pf, &i2cctl, 1);  in ixl_i2c_bus_clear()
87 		ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_i2c_bus_clear()
92 		ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_i2c_bus_clear()
98 	ixl_i2c_start(pf);  in ixl_i2c_bus_clear()
101 	ixl_i2c_stop(pf);  in ixl_i2c_bus_clear()
111 ixl_i2c_stop(struct ixl_pf *pf)  in ixl_i2c_stop()  argument
113 	struct i40e_hw *hw = &pf->hw;  in ixl_i2c_stop()
119 	ixl_set_i2c_data(pf, &i2cctl, 0);  in ixl_i2c_stop()
120 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_i2c_stop()
125 	ixl_set_i2c_data(pf, &i2cctl, 1);  in ixl_i2c_stop()
139 ixl_clock_in_i2c_byte(struct ixl_pf *pf, u8 *data)  in ixl_clock_in_i2c_byte()  argument
147 		ixl_clock_in_i2c_bit(pf, &bit);  in ixl_clock_in_i2c_byte()
162 ixl_clock_in_i2c_bit(struct ixl_pf *pf, bool *data)  in ixl_clock_in_i2c_bit()  argument
164 	struct i40e_hw *hw = &pf->hw;  in ixl_clock_in_i2c_bit()
169 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_clock_in_i2c_bit()
180 	*data = ixl_get_i2c_data(pf, &i2cctl);  in ixl_clock_in_i2c_bit()
182 	ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_clock_in_i2c_bit()
197 ixl_get_i2c_ack(struct ixl_pf *pf)  in ixl_get_i2c_ack()  argument
199 	struct i40e_hw *hw = &pf->hw;  in ixl_get_i2c_ack()
206 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_get_i2c_ack()
220 		ack = ixl_get_i2c_data(pf, &i2cctl);  in ixl_get_i2c_ack()
228 		ixl_dbg(pf, IXL_DBG_I2C, "I2C ack was not received.\n");  in ixl_get_i2c_ack()
232 	ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_get_i2c_ack()
248 ixl_clock_out_i2c_bit(struct ixl_pf *pf, bool data)  in ixl_clock_out_i2c_bit()  argument
250 	struct i40e_hw *hw = &pf->hw;  in ixl_clock_out_i2c_bit()
254 	status = ixl_set_i2c_data(pf, &i2cctl, data);  in ixl_clock_out_i2c_bit()
256 		ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_clock_out_i2c_bit()
261 		ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_clock_out_i2c_bit()
269 		ixl_dbg(pf, IXL_DBG_I2C, "I2C data was not set to %#x\n", data);  in ixl_clock_out_i2c_bit()
283 ixl_clock_out_i2c_byte(struct ixl_pf *pf, u8 data)  in ixl_clock_out_i2c_byte()  argument
285 	struct i40e_hw *hw = &pf->hw;  in ixl_clock_out_i2c_byte()
295 		status = ixl_clock_out_i2c_bit(pf, bit);  in ixl_clock_out_i2c_byte()
319 ixl_lower_i2c_clk(struct ixl_pf *pf, u32 *i2cctl)  in ixl_lower_i2c_clk()  argument
321 	struct i40e_hw *hw = &pf->hw;  in ixl_lower_i2c_clk()
341 ixl_raise_i2c_clk(struct ixl_pf *pf, u32 *i2cctl)  in ixl_raise_i2c_clk()  argument
343 	struct i40e_hw *hw = &pf->hw;  in ixl_raise_i2c_clk()
371 ixl_get_i2c_data(struct ixl_pf *pf, u32 *i2cctl)  in ixl_get_i2c_data()  argument
392 ixl_set_i2c_data(struct ixl_pf *pf, u32 *i2cctl, bool data)  in ixl_set_i2c_data()  argument
394 	struct i40e_hw *hw = &pf->hw;  in ixl_set_i2c_data()
413 	if (data != ixl_get_i2c_data(pf, i2cctl)) {  in ixl_set_i2c_data()
415 		ixl_dbg(pf, IXL_DBG_I2C, "Error - I2C data was not set to %X.\n", data);  in ixl_set_i2c_data()
426 ixl_i2c_start(struct ixl_pf *pf)  in ixl_i2c_start()  argument
428 	struct i40e_hw *hw = &pf->hw;  in ixl_i2c_start()
434 	ixl_set_i2c_data(pf, &i2cctl, 1);  in ixl_i2c_start()
435 	ixl_raise_i2c_clk(pf, &i2cctl);  in ixl_i2c_start()
440 	ixl_set_i2c_data(pf, &i2cctl, 0);  in ixl_i2c_start()
445 	ixl_lower_i2c_clk(pf, &i2cctl);  in ixl_i2c_start()
456 ixl_read_i2c_byte_bb(struct ixl_pf *pf, u8 byte_offset,  in ixl_read_i2c_byte_bb()  argument
459 	struct i40e_hw *hw = &pf->hw;  in ixl_read_i2c_byte_bb()
472 		ixl_i2c_start(pf);  in ixl_read_i2c_byte_bb()
475 		status = ixl_clock_out_i2c_byte(pf, dev_addr);  in ixl_read_i2c_byte_bb()
477 			ixl_dbg(pf, IXL_DBG_I2C, "dev_addr clock out error\n");  in ixl_read_i2c_byte_bb()
481 		status = ixl_get_i2c_ack(pf);  in ixl_read_i2c_byte_bb()
483 			ixl_dbg(pf, IXL_DBG_I2C, "dev_addr i2c ack error\n");  in ixl_read_i2c_byte_bb()
487 		status = ixl_clock_out_i2c_byte(pf, byte_offset);  in ixl_read_i2c_byte_bb()
489 			ixl_dbg(pf, IXL_DBG_I2C, "byte_offset clock out error\n");  in ixl_read_i2c_byte_bb()
493 		status = ixl_get_i2c_ack(pf);  in ixl_read_i2c_byte_bb()
495 			ixl_dbg(pf, IXL_DBG_I2C, "byte_offset i2c ack error\n");  in ixl_read_i2c_byte_bb()
499 		ixl_i2c_start(pf);  in ixl_read_i2c_byte_bb()
502 		status = ixl_clock_out_i2c_byte(pf, (dev_addr | 0x1));  in ixl_read_i2c_byte_bb()
506 		status = ixl_get_i2c_ack(pf);  in ixl_read_i2c_byte_bb()
510 		status = ixl_clock_in_i2c_byte(pf, data);  in ixl_read_i2c_byte_bb()
514 		status = ixl_clock_out_i2c_bit(pf, nack);  in ixl_read_i2c_byte_bb()
518 		ixl_i2c_stop(pf);  in ixl_read_i2c_byte_bb()
523 		ixl_i2c_bus_clear(pf);  in ixl_read_i2c_byte_bb()
527 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read error - Retrying\n");  in ixl_read_i2c_byte_bb()
529 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read error\n");  in ixl_read_i2c_byte_bb()
545 ixl_write_i2c_byte_bb(struct ixl_pf *pf, u8 byte_offset,  in ixl_write_i2c_byte_bb()  argument
548 	struct i40e_hw *hw = &pf->hw;  in ixl_write_i2c_byte_bb()
559 		ixl_i2c_start(pf);  in ixl_write_i2c_byte_bb()
561 		status = ixl_clock_out_i2c_byte(pf, dev_addr);  in ixl_write_i2c_byte_bb()
565 		status = ixl_get_i2c_ack(pf);  in ixl_write_i2c_byte_bb()
569 		status = ixl_clock_out_i2c_byte(pf, byte_offset);  in ixl_write_i2c_byte_bb()
573 		status = ixl_get_i2c_ack(pf);  in ixl_write_i2c_byte_bb()
577 		status = ixl_clock_out_i2c_byte(pf, data);  in ixl_write_i2c_byte_bb()
581 		status = ixl_get_i2c_ack(pf);  in ixl_write_i2c_byte_bb()
585 		ixl_i2c_stop(pf);  in ixl_write_i2c_byte_bb()
589 		ixl_i2c_bus_clear(pf);  in ixl_write_i2c_byte_bb()
593 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write error - Retrying\n");  in ixl_write_i2c_byte_bb()
595 			ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write error\n");  in ixl_write_i2c_byte_bb()
611 ixl_read_i2c_byte_reg(struct ixl_pf *pf, u8 byte_offset,  in ixl_read_i2c_byte_reg()  argument
614 	struct i40e_hw *hw = &pf->hw;  in ixl_read_i2c_byte_reg()
633 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read error\n");  in ixl_read_i2c_byte_reg()
641 ixl_write_i2c_byte_reg(struct ixl_pf *pf, u8 byte_offset,  in ixl_write_i2c_byte_reg()  argument
644 	struct i40e_hw *hw = &pf->hw;  in ixl_write_i2c_byte_reg()
650 	status = ixl_read_i2c_byte_reg(pf, byte_offset + 1, dev_addr, &upperbyte);  in ixl_write_i2c_byte_reg()
669 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write error\n");  in ixl_write_i2c_byte_reg()
699 ixl_read_i2c_byte_aq(struct ixl_pf *pf, u8 byte_offset,  in ixl_read_i2c_byte_aq()  argument
702 	struct i40e_hw *hw = &pf->hw;  in ixl_read_i2c_byte_aq()
713 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte read status %s, error %s\n",  in ixl_read_i2c_byte_aq()
725 ixl_write_i2c_byte_aq(struct ixl_pf *pf, u8 byte_offset,  in ixl_write_i2c_byte_aq()  argument
728 	struct i40e_hw *hw = &pf->hw;  in ixl_write_i2c_byte_aq()
738 		ixl_dbg(pf, IXL_DBG_I2C, "I2C byte write status %s, error %s\n",  in ixl_write_i2c_byte_aq()