linux-kernel - [PATCH v7 3/8] soc: mediatek: pm-domains: Split bus_prot

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Message-Id: <20230713150414.891893-4-msp@baylibre.com>
Date:   Thu, 13 Jul 2023 17:04:09 +0200
From:   Markus Schneider-Pargmann <msp@...libre.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     Chun-Jie Chen <chun-jie.chen@...iatek.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        Fabien Parent <parent.f@...il.com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Markus Schneider-Pargmann <msp@...libre.com>,
        Alexandre Mergnat <amergnat@...libre.com>
Subject: [PATCH v7 3/8] soc: mediatek: pm-domains: Split bus_prot_mask

bus_prot_mask is used for all operations, set clear and acknowledge. In
preparation of m8365 power domain support split this one mask into two,
one mask for set and clear, another one for acknowledge.

Signed-off-by: Markus Schneider-Pargmann <msp@...libre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Reviewed-by: Alexandre Mergnat <amergnat@...libre.com>
Tested-by: Alexandre Mergnat <amergnat@...libre.com>
---
 drivers/soc/mediatek/mtk-pm-domains.c | 24 ++++++++++++++----------
 drivers/soc/mediatek/mtk-pm-domains.h | 14 ++++++++------
 2 files changed, 22 insertions(+), 16 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c
index aa9ab413479e..a2c8f5313124 100644
--- a/drivers/soc/mediatek/mtk-pm-domains.c
+++ b/drivers/soc/mediatek/mtk-pm-domains.c
@@ -123,18 +123,20 @@ static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, st
 	int i, ret;
 
 	for (i = 0; i < SPM_MAX_BUS_PROT_DATA; i++) {
-		u32 val, mask = bpd[i].bus_prot_mask;
+		u32 set_clr_mask = bpd[i].bus_prot_set_clr_mask;
+		u32 sta_mask = bpd[i].bus_prot_sta_mask;
+		u32 val;
 
-		if (!mask)
+		if (!set_clr_mask)
 			break;
 
 		if (bpd[i].flags & BUS_PROT_REG_UPDATE)
-			regmap_set_bits(regmap, bpd[i].bus_prot_set, mask);
+			regmap_set_bits(regmap, bpd[i].bus_prot_set, set_clr_mask);
 		else
-			regmap_write(regmap, bpd[i].bus_prot_set, mask);
+			regmap_write(regmap, bpd[i].bus_prot_set, set_clr_mask);
 
 		ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta,
-					       val, (val & mask) == mask,
+					       val, (val & sta_mask) == sta_mask,
 					       MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
 		if (ret)
 			return ret;
@@ -160,21 +162,23 @@ static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd,
 	int i, ret;
 
 	for (i = SPM_MAX_BUS_PROT_DATA - 1; i >= 0; i--) {
-		u32 val, mask = bpd[i].bus_prot_mask;
+		u32 set_clr_mask = bpd[i].bus_prot_set_clr_mask;
+		u32 sta_mask = bpd[i].bus_prot_sta_mask;
+		u32 val;
 
-		if (!mask)
+		if (!set_clr_mask)
 			continue;
 
 		if (bpd[i].flags & BUS_PROT_REG_UPDATE)
-			regmap_clear_bits(regmap, bpd[i].bus_prot_clr, mask);
+			regmap_clear_bits(regmap, bpd[i].bus_prot_clr, set_clr_mask);
 		else
-			regmap_write(regmap, bpd[i].bus_prot_clr, mask);
+			regmap_write(regmap, bpd[i].bus_prot_clr, set_clr_mask);
 
 		if (bpd[i].flags & BUS_PROT_IGNORE_CLR_ACK)
 			continue;
 
 		ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta,
-					       val, !(val & mask),
+					       val, !(val & sta_mask),
 					       MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT);
 		if (ret)
 			return ret;
diff --git a/drivers/soc/mediatek/mtk-pm-domains.h b/drivers/soc/mediatek/mtk-pm-domains.h
index d8c0c299dd45..4c3ab72a907b 100644
--- a/drivers/soc/mediatek/mtk-pm-domains.h
+++ b/drivers/soc/mediatek/mtk-pm-domains.h
@@ -47,22 +47,23 @@ enum scpsys_bus_prot_flags {
 	BUS_PROT_IGNORE_CLR_ACK = BIT(2),
 };
 
-#define _BUS_PROT(_mask, _set, _clr, _sta, _flags) {		\
-		.bus_prot_mask = (_mask),			\
+#define _BUS_PROT(_set_clr_mask, _set, _clr, _sta_mask, _sta, _flags) {	\
+		.bus_prot_set_clr_mask = (_set_clr_mask),	\
 		.bus_prot_set = _set,				\
 		.bus_prot_clr = _clr,				\
+		.bus_prot_sta_mask = (_sta_mask),		\
 		.bus_prot_sta = _sta,				\
 		.flags = _flags					\
 	}
 
 #define BUS_PROT_WR(_mask, _set, _clr, _sta)			\
-		_BUS_PROT(_mask, _set, _clr, _sta, 0)
+		_BUS_PROT(_mask, _set, _clr, _mask, _sta, 0)
 
 #define BUS_PROT_WR_IGN(_mask, _set, _clr, _sta)		\
-		_BUS_PROT(_mask, _set, _clr, _sta, BUS_PROT_IGNORE_CLR_ACK)
+		_BUS_PROT(_mask, _set, _clr, _mask, _sta, BUS_PROT_IGNORE_CLR_ACK)
 
 #define BUS_PROT_UPDATE(_mask, _set, _clr, _sta)		\
-		_BUS_PROT(_mask, _set, _clr, _sta, BUS_PROT_REG_UPDATE)
+		_BUS_PROT(_mask, _set, _clr, _mask, _sta, BUS_PROT_REG_UPDATE)
 
 #define BUS_PROT_UPDATE_TOPAXI(_mask)				\
 		BUS_PROT_UPDATE(_mask,				\
@@ -71,9 +72,10 @@ enum scpsys_bus_prot_flags {
 				INFRA_TOPAXI_PROTECTSTA1)
 
 struct scpsys_bus_prot_data {
-	u32 bus_prot_mask;
+	u32 bus_prot_set_clr_mask;
 	u32 bus_prot_set;
 	u32 bus_prot_clr;
+	u32 bus_prot_sta_mask;
 	u32 bus_prot_sta;
 	u8 flags;
 };
-- 
2.40.1