diff --git a/drivers/ssb/pci.c b/drivers/ssb/pci.c
index f52966305e05..158449e55044 100644
--- a/drivers/ssb/pci.c
+++ b/drivers/ssb/pci.c
@@ -406,6 +406,46 @@ static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
 	out->antenna_gain.ghz5.a3 = gain;
 }
 
+/* Revs 4 5 and 8 have partially shared layout */
+static void sprom_extract_r458(struct ssb_sprom *out, const u16 *in)
+{
+	SPEX(txpid2g[0], SSB_SPROM4_TXPID2G01,
+	     SSB_SPROM4_TXPID2G0, SSB_SPROM4_TXPID2G0_SHIFT);
+	SPEX(txpid2g[1], SSB_SPROM4_TXPID2G01,
+	     SSB_SPROM4_TXPID2G1, SSB_SPROM4_TXPID2G1_SHIFT);
+	SPEX(txpid2g[2], SSB_SPROM4_TXPID2G23,
+	     SSB_SPROM4_TXPID2G2, SSB_SPROM4_TXPID2G2_SHIFT);
+	SPEX(txpid2g[3], SSB_SPROM4_TXPID2G23,
+	     SSB_SPROM4_TXPID2G3, SSB_SPROM4_TXPID2G3_SHIFT);
+
+	SPEX(txpid5gl[0], SSB_SPROM4_TXPID5GL01,
+	     SSB_SPROM4_TXPID5GL0, SSB_SPROM4_TXPID5GL0_SHIFT);
+	SPEX(txpid5gl[1], SSB_SPROM4_TXPID5GL01,
+	     SSB_SPROM4_TXPID5GL1, SSB_SPROM4_TXPID5GL1_SHIFT);
+	SPEX(txpid5gl[2], SSB_SPROM4_TXPID5GL23,
+	     SSB_SPROM4_TXPID5GL2, SSB_SPROM4_TXPID5GL2_SHIFT);
+	SPEX(txpid5gl[3], SSB_SPROM4_TXPID5GL23,
+	     SSB_SPROM4_TXPID5GL3, SSB_SPROM4_TXPID5GL3_SHIFT);
+
+	SPEX(txpid5g[0], SSB_SPROM4_TXPID5G01,
+	     SSB_SPROM4_TXPID5G0, SSB_SPROM4_TXPID5G0_SHIFT);
+	SPEX(txpid5g[1], SSB_SPROM4_TXPID5G01,
+	     SSB_SPROM4_TXPID5G1, SSB_SPROM4_TXPID5G1_SHIFT);
+	SPEX(txpid5g[2], SSB_SPROM4_TXPID5G23,
+	     SSB_SPROM4_TXPID5G2, SSB_SPROM4_TXPID5G2_SHIFT);
+	SPEX(txpid5g[3], SSB_SPROM4_TXPID5G23,
+	     SSB_SPROM4_TXPID5G3, SSB_SPROM4_TXPID5G3_SHIFT);
+
+	SPEX(txpid5gh[0], SSB_SPROM4_TXPID5GH01,
+	     SSB_SPROM4_TXPID5GH0, SSB_SPROM4_TXPID5GH0_SHIFT);
+	SPEX(txpid5gh[1], SSB_SPROM4_TXPID5GH01,
+	     SSB_SPROM4_TXPID5GH1, SSB_SPROM4_TXPID5GH1_SHIFT);
+	SPEX(txpid5gh[2], SSB_SPROM4_TXPID5GH23,
+	     SSB_SPROM4_TXPID5GH2, SSB_SPROM4_TXPID5GH2_SHIFT);
+	SPEX(txpid5gh[3], SSB_SPROM4_TXPID5GH23,
+	     SSB_SPROM4_TXPID5GH3, SSB_SPROM4_TXPID5GH3_SHIFT);
+}
+
 static void sprom_extract_r45(struct ssb_sprom *out, const u16 *in)
 {
 	int i;
@@ -471,6 +511,8 @@ static void sprom_extract_r45(struct ssb_sprom *out, const u16 *in)
 	memcpy(&out->antenna_gain.ghz5, &out->antenna_gain.ghz24,
 	       sizeof(out->antenna_gain.ghz5));
 
+	sprom_extract_r458(out, in);
+
 	/* TODO - get remaining rev 4 stuff needed */
 }
 
@@ -561,6 +603,8 @@ static void sprom_extract_r8(struct ssb_sprom *out, const u16 *in)
 	memcpy(&out->antenna_gain.ghz5, &out->antenna_gain.ghz24,
 	       sizeof(out->antenna_gain.ghz5));
 
+	sprom_extract_r458(out, in);
+
 	/* TODO - get remaining rev 8 stuff needed */
 }
 
diff --git a/include/linux/ssb/ssb.h b/include/linux/ssb/ssb.h
index 623b704fdc42..9659eff52ca2 100644
--- a/include/linux/ssb/ssb.h
+++ b/include/linux/ssb/ssb.h
@@ -55,6 +55,10 @@ struct ssb_sprom {
 	u8 tri5gl;		/* 5.2GHz TX isolation */
 	u8 tri5g;		/* 5.3GHz TX isolation */
 	u8 tri5gh;		/* 5.8GHz TX isolation */
+	u8 txpid2g[4];		/* 2GHz TX power index */
+	u8 txpid5gl[4];		/* 4.9 - 5.1GHz TX power index */
+	u8 txpid5g[4];		/* 5.1 - 5.5GHz TX power index */
+	u8 txpid5gh[4];		/* 5.5 - ...GHz TX power index */
 	u8 rxpo2g;		/* 2GHz RX power offset */
 	u8 rxpo5g;		/* 5GHz RX power offset */
 	u8 rssisav2g;		/* 2GHz RSSI params */
diff --git a/include/linux/ssb/ssb_regs.h b/include/linux/ssb/ssb_regs.h
index 11daf9c140e7..489f7b6d61c5 100644
--- a/include/linux/ssb/ssb_regs.h
+++ b/include/linux/ssb/ssb_regs.h
@@ -299,6 +299,46 @@
 #define  SSB_SPROM4_AGAIN2_SHIFT	0
 #define  SSB_SPROM4_AGAIN3		0xFF00	/* Antenna 3 */
 #define  SSB_SPROM4_AGAIN3_SHIFT	8
+#define SSB_SPROM4_TXPID2G01		0x0062 	/* TX Power Index 2GHz */
+#define  SSB_SPROM4_TXPID2G0		0x00FF
+#define  SSB_SPROM4_TXPID2G0_SHIFT	0
+#define  SSB_SPROM4_TXPID2G1		0xFF00
+#define  SSB_SPROM4_TXPID2G1_SHIFT	8
+#define SSB_SPROM4_TXPID2G23		0x0064 	/* TX Power Index 2GHz */
+#define  SSB_SPROM4_TXPID2G2		0x00FF
+#define  SSB_SPROM4_TXPID2G2_SHIFT	0
+#define  SSB_SPROM4_TXPID2G3		0xFF00
+#define  SSB_SPROM4_TXPID2G3_SHIFT	8
+#define SSB_SPROM4_TXPID5G01		0x0066 	/* TX Power Index 5GHz middle subband */
+#define  SSB_SPROM4_TXPID5G0		0x00FF
+#define  SSB_SPROM4_TXPID5G0_SHIFT	0
+#define  SSB_SPROM4_TXPID5G1		0xFF00
+#define  SSB_SPROM4_TXPID5G1_SHIFT	8
+#define SSB_SPROM4_TXPID5G23		0x0068 	/* TX Power Index 5GHz middle subband */
+#define  SSB_SPROM4_TXPID5G2		0x00FF
+#define  SSB_SPROM4_TXPID5G2_SHIFT	0
+#define  SSB_SPROM4_TXPID5G3		0xFF00
+#define  SSB_SPROM4_TXPID5G3_SHIFT	8
+#define SSB_SPROM4_TXPID5GL01		0x006A 	/* TX Power Index 5GHz low subband */
+#define  SSB_SPROM4_TXPID5GL0		0x00FF
+#define  SSB_SPROM4_TXPID5GL0_SHIFT	0
+#define  SSB_SPROM4_TXPID5GL1		0xFF00
+#define  SSB_SPROM4_TXPID5GL1_SHIFT	8
+#define SSB_SPROM4_TXPID5GL23		0x006C 	/* TX Power Index 5GHz low subband */
+#define  SSB_SPROM4_TXPID5GL2		0x00FF
+#define  SSB_SPROM4_TXPID5GL2_SHIFT	0
+#define  SSB_SPROM4_TXPID5GL3		0xFF00
+#define  SSB_SPROM4_TXPID5GL3_SHIFT	8
+#define SSB_SPROM4_TXPID5GH01		0x006E 	/* TX Power Index 5GHz high subband */
+#define  SSB_SPROM4_TXPID5GH0		0x00FF
+#define  SSB_SPROM4_TXPID5GH0_SHIFT	0
+#define  SSB_SPROM4_TXPID5GH1		0xFF00
+#define  SSB_SPROM4_TXPID5GH1_SHIFT	8
+#define SSB_SPROM4_TXPID5GH23		0x0070 	/* TX Power Index 5GHz high subband */
+#define  SSB_SPROM4_TXPID5GH2		0x00FF
+#define  SSB_SPROM4_TXPID5GH2_SHIFT	0
+#define  SSB_SPROM4_TXPID5GH3		0xFF00
+#define  SSB_SPROM4_TXPID5GH3_SHIFT	8
 #define SSB_SPROM4_MAXP_BG		0x0080  /* Max Power BG in path 1 */
 #define  SSB_SPROM4_MAXP_BG_MASK	0x00FF  /* Mask for Max Power BG */
 #define  SSB_SPROM4_ITSSI_BG		0xFF00	/* Mask for path 1 itssi_bg */