diff mbox series

[net-next,08/13] net: pcs: xpcs: use FIELD_PREP() and FIELD_GET()

Message ID E1swfQz-006Dfg-5U@rmk-PC.armlinux.org.uk (mailing list archive)
State Accepted
Commit f6818918106113e04796c4558cbd98d01e04f002
Delegated to: Netdev Maintainers
Headers show
Series net: pcs: xpcs: cleanups batch 2 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 6 this patch: 6
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 6 this patch: 6
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 5 this patch: 5
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 63 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-10-06--15-00 (tests: 775)

Commit Message

Russell King (Oracle) Oct. 4, 2024, 10:21 a.m. UTC 
Convert xpcs to use the bitfield macros rather than definining the
bitfield shifts and open-coding the insertion and extraction of these
bitfields.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/pcs/pcs-xpcs.c | 14 ++++++--------
 drivers/net/pcs/pcs-xpcs.h |  4 ----
 2 files changed, 6 insertions(+), 12 deletions(-)

Comments

Paolo Abeni Oct. 8, 2024, 9:01 a.m. UTC | #1 
Hi,

On 10/4/24 12:21, Russell King (Oracle) wrote:
> diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
> index 805856cabba1..f55bc180c624 100644
> --- a/drivers/net/pcs/pcs-xpcs.c
> +++ b/drivers/net/pcs/pcs-xpcs.c
> @@ -592,7 +592,8 @@ int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
>   		ret = DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
>   		      DW_VR_MII_EEE_TX_QUIET_EN | DW_VR_MII_EEE_RX_QUIET_EN |
>   		      DW_VR_MII_EEE_TX_EN_CTRL | DW_VR_MII_EEE_RX_EN_CTRL |
> -		      mult_fact_100ns << DW_VR_MII_EEE_MULT_FACT_100NS_SHIFT;
> +		      FIELD_PREP(DW_VR_MII_EEE_MULT_FACT_100NS,
> +				 mult_fact_100ns);
>   	} else {
>   		ret &= ~(DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
>   		       DW_VR_MII_EEE_TX_QUIET_EN | DW_VR_MII_EEE_RX_QUIET_EN |

Very minor and non blocking thing: perhaps consider renaming 
DW_VR_MII_EEE_MULT_FACT_100NS to DW_VR_MII_EEE_MULT_FACT_100NS_MASK - 
possibly in a later work?

Cheers,

Paolo
diff mbox series

Patch

diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
index 805856cabba1..f55bc180c624 100644
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -592,7 +592,8 @@  int xpcs_config_eee(struct dw_xpcs *xpcs, int mult_fact_100ns, int enable)
 		ret = DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
 		      DW_VR_MII_EEE_TX_QUIET_EN | DW_VR_MII_EEE_RX_QUIET_EN |
 		      DW_VR_MII_EEE_TX_EN_CTRL | DW_VR_MII_EEE_RX_EN_CTRL |
-		      mult_fact_100ns << DW_VR_MII_EEE_MULT_FACT_100NS_SHIFT;
+		      FIELD_PREP(DW_VR_MII_EEE_MULT_FACT_100NS,
+				 mult_fact_100ns);
 	} else {
 		ret &= ~(DW_VR_MII_EEE_LTX_EN | DW_VR_MII_EEE_LRX_EN |
 		       DW_VR_MII_EEE_TX_QUIET_EN | DW_VR_MII_EEE_RX_QUIET_EN |
@@ -681,9 +682,8 @@  static int xpcs_config_aneg_c37_sgmii(struct dw_xpcs *xpcs,
 		return ret;
 
 	ret &= ~(DW_VR_MII_PCS_MODE_MASK | DW_VR_MII_TX_CONFIG_MASK);
-	ret |= (DW_VR_MII_PCS_MODE_C37_SGMII <<
-		DW_VR_MII_AN_CTRL_PCS_MODE_SHIFT &
-		DW_VR_MII_PCS_MODE_MASK);
+	ret |= FIELD_PREP(DW_VR_MII_PCS_MODE_MASK,
+			  DW_VR_MII_PCS_MODE_C37_SGMII);
 	if (xpcs->info.pma == WX_TXGBE_XPCS_PMA_10G_ID) {
 		ret |= DW_VR_MII_AN_CTRL_8BIT;
 		/* Hardware requires it to be PHY side SGMII */
@@ -691,8 +691,7 @@  static int xpcs_config_aneg_c37_sgmii(struct dw_xpcs *xpcs,
 	} else {
 		tx_conf = DW_VR_MII_TX_CONFIG_MAC_SIDE_SGMII;
 	}
-	ret |= tx_conf << DW_VR_MII_AN_CTRL_TX_CONFIG_SHIFT &
-		DW_VR_MII_TX_CONFIG_MASK;
+	ret |= FIELD_PREP(DW_VR_MII_TX_CONFIG_MASK, tx_conf);
 	ret = xpcs_write(xpcs, MDIO_MMD_VEND2, DW_VR_MII_AN_CTRL, ret);
 	if (ret < 0)
 		return ret;
@@ -971,8 +970,7 @@  static int xpcs_get_state_c37_sgmii(struct dw_xpcs *xpcs,
 
 		state->link = true;
 
-		speed_value = (ret & DW_VR_MII_AN_STS_C37_ANSGM_SP) >>
-			      DW_VR_MII_AN_STS_C37_ANSGM_SP_SHIFT;
+		speed_value = FIELD_GET(DW_VR_MII_AN_STS_C37_ANSGM_SP, ret);
 		if (speed_value == DW_VR_MII_C37_ANSGM_SP_1000)
 			state->speed = SPEED_1000;
 		else if (speed_value == DW_VR_MII_C37_ANSGM_SP_100)
diff --git a/drivers/net/pcs/pcs-xpcs.h b/drivers/net/pcs/pcs-xpcs.h
index 1b546eae8280..8902485730a2 100644
--- a/drivers/net/pcs/pcs-xpcs.h
+++ b/drivers/net/pcs/pcs-xpcs.h
@@ -77,11 +77,9 @@ 
 
 /* VR_MII_AN_CTRL */
 #define DW_VR_MII_AN_CTRL_8BIT			BIT(8)
-#define DW_VR_MII_AN_CTRL_TX_CONFIG_SHIFT	3
 #define DW_VR_MII_TX_CONFIG_MASK		BIT(3)
 #define DW_VR_MII_TX_CONFIG_PHY_SIDE_SGMII	0x1
 #define DW_VR_MII_TX_CONFIG_MAC_SIDE_SGMII	0x0
-#define DW_VR_MII_AN_CTRL_PCS_MODE_SHIFT	1
 #define DW_VR_MII_PCS_MODE_MASK			GENMASK(2, 1)
 #define DW_VR_MII_PCS_MODE_C37_1000BASEX	0x0
 #define DW_VR_MII_PCS_MODE_C37_SGMII		0x2
@@ -90,7 +88,6 @@ 
 /* VR_MII_AN_INTR_STS */
 #define DW_VR_MII_AN_STS_C37_ANCMPLT_INTR	BIT(0)
 #define DW_VR_MII_AN_STS_C37_ANSGM_FD		BIT(1)
-#define DW_VR_MII_AN_STS_C37_ANSGM_SP_SHIFT	2
 #define DW_VR_MII_AN_STS_C37_ANSGM_SP		GENMASK(3, 2)
 #define DW_VR_MII_C37_ANSGM_SP_10		0x0
 #define DW_VR_MII_C37_ANSGM_SP_100		0x1
@@ -114,7 +111,6 @@ 
 #define DW_VR_MII_EEE_TX_EN_CTRL		BIT(4)  /* Tx Control Enable */
 #define DW_VR_MII_EEE_RX_EN_CTRL		BIT(7)  /* Rx Control Enable */
 
-#define DW_VR_MII_EEE_MULT_FACT_100NS_SHIFT	8
 #define DW_VR_MII_EEE_MULT_FACT_100NS		GENMASK(11, 8)
 
 /* VR MII EEE Control 1 defines */