linux-kernel - [PATCH v2 04/12] soc: samsung: Re-introduce Exynos4212 support

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Message-Id: <20230416133422.1949-5-aweber.kernel@gmail.com>
Date:   Sun, 16 Apr 2023 15:34:14 +0200
From:   Artur Weber <aweber.kernel@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Rob Herring <robh+dt@...nel.org>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Olof Johansson <olof@...om.net>, soc@...nel.org,
        Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Kukjin Kim <kgene@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-media@...r.kernel.org,
        linux-phy@...ts.infradead.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Artur Weber <aweber.kernel@...il.com>
Subject: [PATCH v2 04/12] soc: samsung: Re-introduce Exynos4212 support

The platform was originally dropped in commit bca9085e0ae9 ("ARM:
dts: exynos: remove Exynos4212 support (dead code)"), as there were
no boards using it.

We will be adding a device that uses it, so add it back.

This effectively reverts commit c40610198f35 ("soc: samsung: Remove
Exynos4212 related dead code").

Signed-off-by: Artur Weber <aweber.kernel@...il.com>
---
 drivers/soc/samsung/exynos-pmu.c  |  9 +++++++++
 drivers/soc/samsung/exynos-pmu.h  |  2 ++
 drivers/soc/samsung/exynos4-pmu.c | 13 +++++++++++--
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/samsung/exynos-pmu.c b/drivers/soc/samsung/exynos-pmu.c
index 732c86ce2be8..f3437db2fbdc 100644
--- a/drivers/soc/samsung/exynos-pmu.c
+++ b/drivers/soc/samsung/exynos-pmu.c
@@ -57,6 +57,12 @@ void exynos_sys_powerdown_conf(enum sys_powerdown mode)
 
 	if (pmu_data->powerdown_conf_extra)
 		pmu_data->powerdown_conf_extra(mode);
+
+	if (pmu_data->pmu_config_extra) {
+		for (i = 0; pmu_data->pmu_config_extra[i].offset != PMU_TABLE_END; i++)
+			pmu_raw_writel(pmu_data->pmu_config_extra[i].val[mode],
+					pmu_data->pmu_config_extra[i].offset);
+	}
 }
 
 /*
@@ -79,6 +85,9 @@ static const struct of_device_id exynos_pmu_of_device_ids[] = {
 	}, {
 		.compatible = "samsung,exynos4210-pmu",
 		.data = exynos_pmu_data_arm_ptr(exynos4210_pmu_data),
+	}, {
+		.compatible = "samsung,exynos4212-pmu",
+		.data = exynos_pmu_data_arm_ptr(exynos4212_pmu_data),
 	}, {
 		.compatible = "samsung,exynos4412-pmu",
 		.data = exynos_pmu_data_arm_ptr(exynos4412_pmu_data),
diff --git a/drivers/soc/samsung/exynos-pmu.h b/drivers/soc/samsung/exynos-pmu.h
index 5e851f32307e..1c652ffd79b4 100644
--- a/drivers/soc/samsung/exynos-pmu.h
+++ b/drivers/soc/samsung/exynos-pmu.h
@@ -20,6 +20,7 @@ struct exynos_pmu_conf {
 
 struct exynos_pmu_data {
 	const struct exynos_pmu_conf *pmu_config;
+	const struct exynos_pmu_conf *pmu_config_extra;
 
 	void (*pmu_init)(void);
 	void (*powerdown_conf)(enum sys_powerdown);
@@ -32,6 +33,7 @@ extern void __iomem *pmu_base_addr;
 /* list of all exported SoC specific data */
 extern const struct exynos_pmu_data exynos3250_pmu_data;
 extern const struct exynos_pmu_data exynos4210_pmu_data;
+extern const struct exynos_pmu_data exynos4212_pmu_data;
 extern const struct exynos_pmu_data exynos4412_pmu_data;
 extern const struct exynos_pmu_data exynos5250_pmu_data;
 extern const struct exynos_pmu_data exynos5420_pmu_data;
diff --git a/drivers/soc/samsung/exynos4-pmu.c b/drivers/soc/samsung/exynos4-pmu.c
index cb35103565a6..f8092190b938 100644
--- a/drivers/soc/samsung/exynos4-pmu.c
+++ b/drivers/soc/samsung/exynos4-pmu.c
@@ -86,7 +86,7 @@ static const struct exynos_pmu_conf exynos4210_pmu_config[] = {
 	{ PMU_TABLE_END,},
 };
 
-static const struct exynos_pmu_conf exynos4412_pmu_config[] = {
+static const struct exynos_pmu_conf exynos4x12_pmu_config[] = {
 	{ S5P_ARM_CORE0_LOWPWR,			{ 0x0, 0x0, 0x2 } },
 	{ S5P_DIS_IRQ_CORE0,			{ 0x0, 0x0, 0x0 } },
 	{ S5P_DIS_IRQ_CENTRAL0,			{ 0x0, 0x0, 0x0 } },
@@ -191,6 +191,10 @@ static const struct exynos_pmu_conf exynos4412_pmu_config[] = {
 	{ S5P_GPS_ALIVE_LOWPWR,			{ 0x7, 0x0, 0x0 } },
 	{ S5P_CMU_SYSCLK_ISP_LOWPWR,		{ 0x1, 0x0, 0x0 } },
 	{ S5P_CMU_SYSCLK_GPS_LOWPWR,		{ 0x1, 0x0, 0x0 } },
+	{ PMU_TABLE_END,},
+};
+
+static const struct exynos_pmu_conf exynos4412_pmu_config[] = {
 	{ S5P_ARM_CORE2_LOWPWR,			{ 0x0, 0x0, 0x2 } },
 	{ S5P_DIS_IRQ_CORE2,			{ 0x0, 0x0, 0x0 } },
 	{ S5P_DIS_IRQ_CENTRAL2,			{ 0x0, 0x0, 0x0 } },
@@ -204,6 +208,11 @@ const struct exynos_pmu_data exynos4210_pmu_data = {
 	.pmu_config	= exynos4210_pmu_config,
 };
 
+const struct exynos_pmu_data exynos4212_pmu_data = {
+	.pmu_config	= exynos4x12_pmu_config,
+};
+
 const struct exynos_pmu_data exynos4412_pmu_data = {
-	.pmu_config		= exynos4412_pmu_config,
+	.pmu_config		= exynos4x12_pmu_config,
+	.pmu_config_extra	= exynos4412_pmu_config,
 };
-- 
2.40.0