diff mbox series

[PATCH/RFC,2/5] ravb: Split delay handling in parsing and applying

Message ID 20200619191554.24942-3-geert+renesas@glider.be (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series ravb: Add support for explicit internal clock delay configuration | expand

Commit Message

Geert Uytterhoeven June 19, 2020, 7:15 p.m. UTC 
Currently, full delay handling is done in both the probe and resume
paths.  Split it in two parts, so the resume path doesn't have to redo
the parsing part over and over again.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 drivers/net/ethernet/renesas/ravb.h      |  4 +++-
 drivers/net/ethernet/renesas/ravb_main.c | 21 ++++++++++++++++-----
 2 files changed, 19 insertions(+), 6 deletions(-)

Comments

Sergei Shtylyov June 20, 2020, 6:34 p.m. UTC | #1 
On 06/19/2020 10:15 PM, Geert Uytterhoeven wrote:

> Currently, full delay handling is done in both the probe and resume
> paths.  Split it in two parts, so the resume path doesn't have to redo
> the parsing part over and over again.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

[...]

MBR, Sergei
diff mbox series

Patch

diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index 9f88b5db4f89843a..e5ca12ce93c730a9 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -1036,7 +1036,9 @@  struct ravb_private {
 	unsigned no_avb_link:1;
 	unsigned avb_link_active_low:1;
 	unsigned wol_enabled:1;
-	int num_tx_desc;	/* TX descriptors per packet */
+	unsigned rxcidm:1;		/* RX Clock Internal Delay Mode */
+	unsigned txcidm:1;		/* TX Clock Internal Delay Mode */
+	int num_tx_desc;		/* TX descriptors per packet */
 };
 
 static inline u32 ravb_read(struct net_device *ndev, enum ravb_reg reg)
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index a442bcf64b9cd875..f326234d1940f43e 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -1967,23 +1967,32 @@  static const struct soc_device_attribute ravb_delay_mode_quirk_match[] = {
 };
 
 /* Set tx and rx clock internal delay modes */
-static void ravb_set_delay_mode(struct net_device *ndev)
+static void ravb_parse_delay_mode(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
-	int set = 0;
 
 	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
 	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID)
-		set |= APSR_DM_RDM;
+		priv->rxcidm = true;
 
 	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
 	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) {
 		if (!WARN(soc_device_match(ravb_delay_mode_quirk_match),
 			  "phy-mode %s requires TX clock internal delay mode which is not supported by this hardware revision. Please update device tree",
 			  phy_modes(priv->phy_interface)))
-			set |= APSR_DM_TDM;
+			priv->txcidm = true;
 	}
+}
 
+static void ravb_set_delay_mode(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	u32 set = 0;
+
+	if (priv->rxcidm)
+		set |= APSR_DM_RDM;
+	if (priv->txcidm)
+		set |= APSR_DM_TDM;
 	ravb_modify(ndev, APSR, APSR_DM, set);
 }
 
@@ -2116,8 +2125,10 @@  static int ravb_probe(struct platform_device *pdev)
 	/* Request GTI loading */
 	ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
 
-	if (priv->chip_id != RCAR_GEN2)
+	if (priv->chip_id != RCAR_GEN2) {
+		ravb_parse_delay_mode(ndev);
 		ravb_set_delay_mode(ndev);
+	}
 
 	/* Allocate descriptor base address table */
 	priv->desc_bat_size = sizeof(struct ravb_desc) * DBAT_ENTRY_NUM;