linux-kernel - [PATCH 26/37] pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration

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Message-Id: <20230912045157.177966-27-claudiu.beznea.uj@bp.renesas.com>
Date:   Tue, 12 Sep 2023 07:51:46 +0300
From:   Claudiu <claudiu.beznea@...on.dev>
To:     geert+renesas@...der.be, mturquette@...libre.com, sboyd@...nel.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, ulf.hansson@...aro.org,
        linus.walleij@...aro.org, gregkh@...uxfoundation.org,
        jirislaby@...nel.org, magnus.damm@...il.com,
        catalin.marinas@....com, will@...nel.org,
        prabhakar.mahadev-lad.rj@...renesas.com,
        biju.das.jz@...renesas.com, quic_bjorande@...cinc.com,
        arnd@...db.de, konrad.dybcio@...aro.org, neil.armstrong@...aro.org,
        nfraprado@...labora.com, rafal@...ecki.pl,
        wsa+renesas@...g-engineering.com
Cc:     linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mmc@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: [PATCH 26/37] pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration

From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Move drive strength and output impedance values to SoC specific
configuration data structure (struct rzg2l_hwcfg). This allows extending
the drive strength support for RZ/G3S. Along with this the DS values
were converted to uA for simple integration with RZ/G3S support.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
---
 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 38 ++++++++++++++++++-------
 1 file changed, 27 insertions(+), 11 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 80cacac7ec95..1277bb26069c 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -133,13 +133,27 @@ struct rzg2l_register_offsets {
 	u16 sd_ch;
 };
 
+/**
+ * enum rzg2l_iolh_index - starting indexes in IOLH specific arrays
+ * @RZG2L_IOLH_IDX_3V3: starting index for 3V3 power source
+ * @RZG2L_IOLH_IDX_MAX: maximum index
+ */
+enum rzg2l_iolh_index {
+	RZG2L_IOLH_IDX_3V3 = 0,
+	RZG2L_IOLH_IDX_MAX = 4,
+};
+
 /**
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
+ * @iolh_groupa_ua: IOLH group A micro amps specific values
+ * @iolh_groupb_oi: IOLH group B output impedance specific values
  * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
+	u16 iolh_groupa_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupb_oi[RZG2L_IOLH_IDX_MAX];
 	u8 func_base;
 };
 
@@ -177,9 +191,6 @@ struct rzg2l_pinctrl {
 	struct mutex			mutex; /* serialize adding groups and functions */
 };
 
-static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
-static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
-
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
@@ -609,7 +620,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
-		arg = iolh_groupa_mA[index];
+		arg = hwcfg->iolh_groupa_ua[index + RZG2L_IOLH_IDX_3V3] / 1000;
 		break;
 	}
 
@@ -620,7 +631,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
-		arg = iolh_groupb_oi[index];
+		arg = hwcfg->iolh_groupb_oi[index];
 		break;
 	}
 
@@ -708,11 +719,11 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_A))
 				return -EINVAL;
 
-			for (index = 0; index < ARRAY_SIZE(iolh_groupa_mA); index++) {
-				if (arg == iolh_groupa_mA[index])
+			for (index = RZG2L_IOLH_IDX_3V3; index < RZG2L_IOLH_IDX_3V3 + 4; index++) {
+				if (arg == (hwcfg->iolh_groupa_ua[index] / 1000))
 					break;
 			}
-			if (index >= ARRAY_SIZE(iolh_groupa_mA))
+			if (index == (RZG2L_IOLH_IDX_3V3 + 4))
 				return -EINVAL;
 
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
@@ -726,11 +737,11 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_B))
 				return -EINVAL;
 
-			for (index = 0; index < ARRAY_SIZE(iolh_groupb_oi); index++) {
-				if (arg == iolh_groupb_oi[index])
+			for (index = 0; index < ARRAY_SIZE(hwcfg->iolh_groupb_oi); index++) {
+				if (arg == hwcfg->iolh_groupb_oi[index])
 					break;
 			}
-			if (index >= ARRAY_SIZE(iolh_groupb_oi))
+			if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))
 				return -EINVAL;
 
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
@@ -1562,6 +1573,11 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
 		.pwpr = 0x3014,
 		.sd_ch = 0x3000,
 	},
+	.iolh_groupa_ua = {
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 2000, 4000, 8000, 12000,
+	},
+	.iolh_groupb_oi = { 100, 66, 50, 33, },
 };
 
 static struct rzg2l_pinctrl_data r9a07g043_data = {
-- 
2.39.2