netdev - [PATCH net-next 10/22] can: rcar_canfd: Add max_aflpn variable to struct rcar_canfd_hw

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Message-ID: <20250522084128.501049-11-mkl@pengutronix.de>
Date: Thu, 22 May 2025 10:36:38 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net,
	kuba@...nel.org,
	linux-can@...r.kernel.org,
	kernel@...gutronix.de,
	Biju Das <biju.das.jz@...renesas.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 10/22] can: rcar_canfd: Add max_aflpn variable to struct rcar_canfd_hw_info

From: Biju Das <biju.das.jz@...renesas.com>

R-Car Gen3 has maximum acceptance filter list page number of 31 whereas on
R-Car Gen4 it is 127. Add max_aflpn variable to struct rcar_canfd_hw_info
in order to support RZ/G3E that has max AFLPN of 63.

While at it, rename the parameter x->page_num in RCANFD_GAFLECTR_AFLPN
macro to make it clear.

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>
Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
Link: https://patch.msgid.link/20250417054320.14100-11-biju.das.jz@bp.renesas.com
Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/can/rcar/rcar_canfd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 558291a36043..322d72df10ed 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -92,7 +92,7 @@
 
 /* RSCFDnCFDGAFLECTR / RSCFDnGAFLECTR */
 #define RCANFD_GAFLECTR_AFLDAE		BIT(8)
-#define RCANFD_GAFLECTR_AFLPN(gpriv, x)	((x) & reg_gen4(gpriv, 0x7f, 0x1f))
+#define RCANFD_GAFLECTR_AFLPN(gpriv, page_num)	((page_num) & (gpriv)->info->max_aflpn)
 
 /* RSCFDnCFDGAFLIDj / RSCFDnGAFLIDj */
 #define RCANFD_GAFLID_GAFLLB		BIT(29)
@@ -504,6 +504,7 @@ struct rcar_canfd_global;
 
 struct rcar_canfd_hw_info {
 	u8 rnc_field_width;
+	u8 max_aflpn;
 	u8 max_channels;
 	u8 postdiv;
 	/* hardware features */
@@ -581,6 +582,7 @@ static const struct can_bittiming_const rcar_canfd_bittiming_const = {
 
 static const struct rcar_canfd_hw_info rcar_gen3_hw_info = {
 	.rnc_field_width = 8,
+	.max_aflpn = 31,
 	.max_channels = 2,
 	.postdiv = 2,
 	.shared_global_irqs = 1,
@@ -588,6 +590,7 @@ static const struct rcar_canfd_hw_info rcar_gen3_hw_info = {
 
 static const struct rcar_canfd_hw_info rcar_gen4_hw_info = {
 	.rnc_field_width = 16,
+	.max_aflpn = 127,
 	.max_channels = 8,
 	.postdiv = 2,
 	.shared_global_irqs = 1,
@@ -595,6 +598,7 @@ static const struct rcar_canfd_hw_info rcar_gen4_hw_info = {
 
 static const struct rcar_canfd_hw_info rzg2l_hw_info = {
 	.rnc_field_width = 8,
+	.max_aflpn = 31,
 	.max_channels = 2,
 	.postdiv = 1,
 	.multi_channel_irqs = 1,
-- 
2.47.2