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From:   Claudiu <claudiu.beznea@tuxon.dev>
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Cc:     linux-renesas-soc@vger.kernel.org, netdev@vger.kernel.org,
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        linux-gpio@vger.kernel.org, claudiu.beznea@tuxon.dev,
        Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Subject: [PATCH 06/14] pinctrl: renesas: rzg2l: Add pin configuration support for pinmux groups
Date:   Mon, 20 Nov 2023 09:00:16 +0200
Message-Id: <20231120070024.4079344-7-claudiu.beznea.uj@bp.renesas.com>
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From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

On RZ/G3S different Ethernet pins needs to be configured with different
settings (e.g. power-source need to be set, RGMII TXC, TX_CTL pins need
output-enable). Commit adjust driver to allow specifying pin configuration
for pinmux groups. With this DT settings like the following are taken
into account by driver:

eth0_pins: eth0 {
	tx_ctl {
		pinmux = <RZG2L_PORT_PINMUX(1, 1, 1)>;  /* ET0_TX_CTL */
		power-source = <1800>;
		output-enable;
		drive-strength-microamp = <5200>;
	};
};

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 21ee628363fa..819698dacef0 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -376,8 +376,11 @@ static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 		goto done;
 	}
 
-	if (num_pinmux)
+	if (num_pinmux) {
 		nmaps += 1;
+		if (num_configs)
+			nmaps += 1;
+	}
 
 	if (num_pins)
 		nmaps += num_pins;
@@ -462,6 +465,16 @@ static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 	maps[idx].data.mux.function = name;
 	idx++;
 
+	if (num_configs) {
+		ret = rzg2l_map_add_config(&maps[idx], name,
+					   PIN_MAP_TYPE_CONFIGS_GROUP,
+					   configs, num_configs);
+		if (ret < 0)
+			goto remove_group;
+
+		idx++;
+	};
+
 	dev_dbg(pctrl->dev, "Parsed %pOF with %d pins\n", np, num_pinmux);
 	ret = 0;
 	goto done;
-- 
2.39.2