openwrt/target/linux/imx6/patches-4.4/203-net-igb-add-phy-read-write-functions-that-accept-phy.patch

From 16df7dc5901c1cb2a40f6adbd0d9423768ed8210 Mon Sep 17 00:00:00 2001
From: Tim Harvey <tharvey@gateworks.com>
Date: Thu, 15 May 2014 00:29:18 -0700
Subject: [PATCH] net: igb: add phy read/write functions that accept phy addr

Add igb_write_reg_gs40g/igb_read_reg_gs40g that can be passed a phy address.
The existing igb_write_phy_reg_gs40g/igb_read_phy_reg_gs40g become wrappers
to this function.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
 drivers/net/ethernet/intel/igb/e1000_82575.c |  4 +-
 drivers/net/ethernet/intel/igb/e1000_phy.c   | 74 +++++++++++++++++++---------
 drivers/net/ethernet/intel/igb/e1000_phy.h   |  6 ++-
 3 files changed, 58 insertions(+), 26 deletions(-)

--- a/drivers/net/ethernet/intel/igb/e1000_82575.c
+++ b/drivers/net/ethernet/intel/igb/e1000_82575.c
@@ -2153,7 +2153,7 @@ static s32 igb_read_phy_reg_82580(struct
 	if (ret_val)
 		goto out;
 
-	ret_val = igb_read_phy_reg_mdic(hw, offset, data);
+	ret_val = igb_read_phy_reg_mdic(hw, hw->phy.addr, offset, data);
 
 	hw->phy.ops.release(hw);
 
@@ -2178,7 +2178,7 @@ static s32 igb_write_phy_reg_82580(struc
 	if (ret_val)
 		goto out;
 
-	ret_val = igb_write_phy_reg_mdic(hw, offset, data);
+	ret_val = igb_write_phy_reg_mdic(hw, hw->phy.addr, offset, data);
 
 	hw->phy.ops.release(hw);
 
--- a/drivers/net/ethernet/intel/igb/e1000_phy.c
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.c
@@ -126,9 +126,8 @@ out:
  *  Reads the MDI control regsiter in the PHY at offset and stores the
  *  information read to data.
  **/
-s32 igb_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data)
+s32 igb_read_phy_reg_mdic(struct e1000_hw *hw, u8 addr, u32 offset, u16 *data)
 {
-	struct e1000_phy_info *phy = &hw->phy;
 	u32 i, mdicnfg, mdic = 0;
 	s32 ret_val = 0;
 
@@ -147,14 +146,14 @@ s32 igb_read_phy_reg_mdic(struct e1000_h
 	case e1000_i211:
 		mdicnfg = rd32(E1000_MDICNFG);
 		mdicnfg &= ~(E1000_MDICNFG_PHY_MASK);
-		mdicnfg |= (phy->addr << E1000_MDICNFG_PHY_SHIFT);
+		mdicnfg |= (addr << E1000_MDICNFG_PHY_SHIFT);
 		wr32(E1000_MDICNFG, mdicnfg);
 		mdic = ((offset << E1000_MDIC_REG_SHIFT) |
 			(E1000_MDIC_OP_READ));
 		break;
 	default:
 		mdic = ((offset << E1000_MDIC_REG_SHIFT) |
-			(phy->addr << E1000_MDIC_PHY_SHIFT) |
+			(addr << E1000_MDIC_PHY_SHIFT) |
 			(E1000_MDIC_OP_READ));
 		break;
 	}
@@ -208,9 +207,8 @@ out:
  *
  *  Writes data to MDI control register in the PHY at offset.
  **/
-s32 igb_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data)
+s32 igb_write_phy_reg_mdic(struct e1000_hw *hw, u8 addr, u32 offset, u16 data)
 {
-	struct e1000_phy_info *phy = &hw->phy;
 	u32 i, mdicnfg, mdic = 0;
 	s32 ret_val = 0;
 
@@ -229,7 +227,7 @@ s32 igb_write_phy_reg_mdic(struct e1000_
 		case e1000_i211:
 			mdicnfg = rd32(E1000_MDICNFG);
 			mdicnfg &= ~(E1000_MDICNFG_PHY_MASK);
-			mdicnfg |= (phy->addr << E1000_MDICNFG_PHY_SHIFT);
+			mdicnfg |= (addr << E1000_MDICNFG_PHY_SHIFT);
 			wr32(E1000_MDICNFG, mdicnfg);
 			mdic = (((u32)data) |
 				(offset << E1000_MDIC_REG_SHIFT) |
@@ -238,7 +236,7 @@ s32 igb_write_phy_reg_mdic(struct e1000_
 		default:
 			mdic = (((u32)data) |
 				(offset << E1000_MDIC_REG_SHIFT) |
-				(phy->addr << E1000_MDIC_PHY_SHIFT) |
+				(addr << E1000_MDIC_PHY_SHIFT) |
 				(E1000_MDIC_OP_WRITE));
 			break;
 	}
@@ -458,7 +456,7 @@ s32 igb_read_phy_reg_igp(struct e1000_hw
 		goto out;
 
 	if (offset > MAX_PHY_MULTI_PAGE_REG) {
-		ret_val = igb_write_phy_reg_mdic(hw,
+		ret_val = igb_write_phy_reg_mdic(hw, hw->phy.addr,
 						 IGP01E1000_PHY_PAGE_SELECT,
 						 (u16)offset);
 		if (ret_val) {
@@ -467,8 +465,8 @@ s32 igb_read_phy_reg_igp(struct e1000_hw
 		}
 	}
 
-	ret_val = igb_read_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
-					data);
+	ret_val = igb_read_phy_reg_mdic(hw, hw->phy.addr,
+					MAX_PHY_REG_ADDRESS & offset, data);
 
 	hw->phy.ops.release(hw);
 
@@ -497,7 +495,7 @@ s32 igb_write_phy_reg_igp(struct e1000_h
 		goto out;
 
 	if (offset > MAX_PHY_MULTI_PAGE_REG) {
-		ret_val = igb_write_phy_reg_mdic(hw,
+		ret_val = igb_write_phy_reg_mdic(hw, hw->phy.addr,
 						 IGP01E1000_PHY_PAGE_SELECT,
 						 (u16)offset);
 		if (ret_val) {
@@ -506,8 +504,8 @@ s32 igb_write_phy_reg_igp(struct e1000_h
 		}
 	}
 
-	ret_val = igb_write_phy_reg_mdic(hw, MAX_PHY_REG_ADDRESS & offset,
-					 data);
+	ret_val = igb_write_phy_reg_mdic(hw, hw->phy.addr,
+					 MAX_PHY_REG_ADDRESS & offset, data);
 
 	hw->phy.ops.release(hw);
 
@@ -2547,8 +2545,9 @@ out:
 }
 
 /**
- *  igb_write_phy_reg_gs40g - Write GS40G PHY register
+ *  igb_write_reg_gs40g - Write GS40G PHY register
  *  @hw: pointer to the HW structure
+ *  @addr: phy address to write to
  *  @offset: lower half is register offset to write to
  *     upper half is page to use.
  *  @data: data to write at register offset
@@ -2556,7 +2555,7 @@ out:
  *  Acquires semaphore, if necessary, then writes the data to PHY register
  *  at the offset.  Release any acquired semaphores before exiting.
  **/
-s32 igb_write_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 data)
+s32 igb_write_reg_gs40g(struct e1000_hw *hw, u8 addr, u32 offset, u16 data)
 {
 	s32 ret_val;
 	u16 page = offset >> GS40G_PAGE_SHIFT;
@@ -2566,10 +2565,10 @@ s32 igb_write_phy_reg_gs40g(struct e1000
 	if (ret_val)
 		return ret_val;
 
-	ret_val = igb_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page);
+	ret_val = igb_write_phy_reg_mdic(hw, addr, GS40G_PAGE_SELECT, page);
 	if (ret_val)
 		goto release;
-	ret_val = igb_write_phy_reg_mdic(hw, offset, data);
+	ret_val = igb_write_phy_reg_mdic(hw, addr, offset, data);
 
 release:
 	hw->phy.ops.release(hw);
@@ -2577,8 +2576,24 @@ release:
 }
 
 /**
- *  igb_read_phy_reg_gs40g - Read GS40G  PHY register
+ *  igb_write_phy_reg_gs40g - Write GS40G PHY register
+ *  @hw: pointer to the HW structure
+ *  @offset: lower half is register offset to write to
+ *     upper half is page to use.
+ *  @data: data to write at register offset
+ *
+ *  Acquires semaphore, if necessary, then writes the data to PHY register
+ *  at the offset.  Release any acquired semaphores before exiting.
+ **/
+s32 igb_write_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 data)
+{
+	return igb_write_reg_gs40g(hw, hw->phy.addr, offset, data);
+}
+
+/**
+ *  igb_read_reg_gs40g - Read GS40G  PHY register
  *  @hw: pointer to the HW structure
+ *  @addr: phy address to read from
  *  @offset: lower half is register offset to read to
  *     upper half is page to use.
  *  @data: data to read at register offset
@@ -2586,7 +2601,7 @@ release:
  *  Acquires semaphore, if necessary, then reads the data in the PHY register
  *  at the offset.  Release any acquired semaphores before exiting.
  **/
-s32 igb_read_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 *data)
+s32 igb_read_reg_gs40g(struct e1000_hw *hw, u8 addr, u32 offset, u16 *data)
 {
 	s32 ret_val;
 	u16 page = offset >> GS40G_PAGE_SHIFT;
@@ -2596,10 +2611,10 @@ s32 igb_read_phy_reg_gs40g(struct e1000_
 	if (ret_val)
 		return ret_val;
 
-	ret_val = igb_write_phy_reg_mdic(hw, GS40G_PAGE_SELECT, page);
+	ret_val = igb_write_phy_reg_mdic(hw, addr, GS40G_PAGE_SELECT, page);
 	if (ret_val)
 		goto release;
-	ret_val = igb_read_phy_reg_mdic(hw, offset, data);
+	ret_val = igb_read_phy_reg_mdic(hw, addr, offset, data);
 
 release:
 	hw->phy.ops.release(hw);
@@ -2607,6 +2622,21 @@ release:
 }
 
 /**
+ *  igb_read_phy_reg_gs40g - Read GS40G  PHY register
+ *  @hw: pointer to the HW structure
+ *  @offset: lower half is register offset to read to
+ *     upper half is page to use.
+ *  @data: data to read at register offset
+ *
+ *  Acquires semaphore, if necessary, then reads the data in the PHY register
+ *  at the offset.  Release any acquired semaphores before exiting.
+ **/
+s32 igb_read_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 *data)
+{
+	return igb_read_reg_gs40g(hw, hw->phy.addr, offset, data);
+}
+
+/**
  *  igb_set_master_slave_mode - Setup PHY for Master/slave mode
  *  @hw: pointer to the HW structure
  *
--- a/drivers/net/ethernet/intel/igb/e1000_phy.h
+++ b/drivers/net/ethernet/intel/igb/e1000_phy.h
@@ -62,8 +62,8 @@ void igb_power_up_phy_copper(struct e100
 void igb_power_down_phy_copper(struct e1000_hw *hw);
 s32  igb_phy_init_script_igp3(struct e1000_hw *hw);
 s32  igb_initialize_M88E1512_phy(struct e1000_hw *hw);
-s32  igb_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data);
-s32  igb_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data);
+s32  igb_read_phy_reg_mdic(struct e1000_hw *hw, u8 addr, u32 offset, u16 *data);
+s32  igb_write_phy_reg_mdic(struct e1000_hw *hw, u8 addr, u32 offset, u16 data);
 s32  igb_read_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 *data);
 s32  igb_write_phy_reg_i2c(struct e1000_hw *hw, u32 offset, u16 data);
 s32  igb_read_sfp_data_byte(struct e1000_hw *hw, u16 offset, u8 *data);
@@ -73,6 +73,8 @@ s32  igb_phy_force_speed_duplex_82580(st
 s32  igb_get_cable_length_82580(struct e1000_hw *hw);
 s32  igb_read_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 *data);
 s32  igb_write_phy_reg_gs40g(struct e1000_hw *hw, u32 offset, u16 data);
+s32  igb_read_reg_gs40g(struct e1000_hw *hw, u8 addr, u32 offset, u16 *data);
+s32  igb_write_reg_gs40g(struct e1000_hw *hw, u8 addr, u32 offset, u16 data);
 s32  igb_check_polarity_m88(struct e1000_hw *hw);
 
 /* IGP01E1000 Specific Registers */