linux-kernel - [PATCH net-next v1 5/5] net: dsa: microchip: Add register access control for KSZ8873 chip

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Message-Id: <20230524123220.2481565-6-o.rempel@pengutronix.de>
Date:   Wed, 24 May 2023 14:32:20 +0200
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     "David S. Miller" <davem@...emloft.net>,
        Andrew Lunn <andrew@...n.ch>,
        Eric Dumazet <edumazet@...gle.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Arun Ramadoss <arun.ramadoss@...rochip.com>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        UNGLinuxDriver@...rochip.com,
        "Russell King (Oracle)" <linux@...linux.org.uk>
Subject: [PATCH net-next v1 5/5] net: dsa: microchip: Add register access control for KSZ8873 chip

This update introduces specific register access boundaries for the
KSZ8873 and KSZ8863 chips within the DSA Microchip driver. The outlined
ranges target global control registers, port registers, and advanced
control registers.

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 drivers/net/dsa/microchip/ksz_common.c | 41 ++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 53bb7d9712d0..768f649d2f40 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1075,6 +1075,45 @@ static const struct regmap_access_table ksz9896_register_set = {
 	.n_yes_ranges = ARRAY_SIZE(ksz9896_valid_regs),
 };
 
+static const struct regmap_range ksz8873_valid_regs[] = {
+	regmap_reg_range(0x00, 0x01),
+	/* global control register */
+	regmap_reg_range(0x02, 0x0f),
+
+	/* port registers */
+	regmap_reg_range(0x10, 0x1d),
+	regmap_reg_range(0x1e, 0x1f),
+	regmap_reg_range(0x20, 0x2d),
+	regmap_reg_range(0x2e, 0x2f),
+	regmap_reg_range(0x30, 0x39),
+	regmap_reg_range(0x3f, 0x3f),
+
+	/* advanced control registers */
+	regmap_reg_range(0x60, 0x6f),
+	regmap_reg_range(0x70, 0x75),
+	regmap_reg_range(0x76, 0x78),
+	regmap_reg_range(0x79, 0x7a),
+	regmap_reg_range(0x7b, 0x83),
+	regmap_reg_range(0x8e, 0x99),
+	regmap_reg_range(0x9a, 0xa5),
+	regmap_reg_range(0xa6, 0xa6),
+	regmap_reg_range(0xa7, 0xaa),
+	regmap_reg_range(0xab, 0xae),
+	regmap_reg_range(0xaf, 0xba),
+	regmap_reg_range(0xbb, 0xbc),
+	regmap_reg_range(0xbd, 0xbd),
+	regmap_reg_range(0xc0, 0xc0),
+	regmap_reg_range(0xc2, 0xc2),
+	regmap_reg_range(0xc3, 0xc3),
+	regmap_reg_range(0xc4, 0xc4),
+	regmap_reg_range(0xc6, 0xc6),
+};
+
+static const struct regmap_access_table ksz8873_register_set = {
+	.yes_ranges = ksz8873_valid_regs,
+	.n_yes_ranges = ARRAY_SIZE(ksz8873_valid_regs),
+};
+
 const struct ksz_chip_data ksz_switch_chips[] = {
 	[KSZ8563] = {
 		.chip_id = KSZ8563_CHIP_ID,
@@ -1214,6 +1253,8 @@ const struct ksz_chip_data ksz_switch_chips[] = {
 		.supports_mii = {false, false, true},
 		.supports_rmii = {false, false, true},
 		.internal_phy = {true, true, false},
+		.wr_table = &ksz8873_register_set,
+		.rd_table = &ksz8873_register_set,
 	},
 
 	[KSZ9477] = {
-- 
2.39.2