linux-kernel - [PATCH 2/3] soc: c3: Add support for power domains controller

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Date:   Mon, 3 Jul 2023 17:31:41 +0800
From:   =Xianwei Zhao <xianwei.zhao@...ogic.com>
To:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-amlogic@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Neil Armstrong" <neil.armstrong@...aro.org>,
        Kevin Hilman <khilman@...libre.com>,
        Xianwei Zhao <xianwei.zhao@...ogic.com>
Subject: [PATCH 2/3] soc: c3: Add support for power domains controller

From: Xianwei Zhao <xianwei.zhao@...ogic.com>

Add support for C3 Power controller. C3 power control
registers are in secure domain, and should be accessed by SMC.

Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
---
 drivers/soc/amlogic/meson-secure-pwrc.c | 28 ++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/amlogic/meson-secure-pwrc.c b/drivers/soc/amlogic/meson-secure-pwrc.c
index 25b4b71df9b8..39ccc8f2e630 100644
--- a/drivers/soc/amlogic/meson-secure-pwrc.c
+++ b/drivers/soc/amlogic/meson-secure-pwrc.c
@@ -12,6 +12,7 @@
 #include <linux/pm_domain.h>
 #include <dt-bindings/power/meson-a1-power.h>
 #include <dt-bindings/power/meson-s4-power.h>
+#include <dt-bindings/power/amlogic-c3-power.h>
 #include <linux/arm-smccc.h>
 #include <linux/firmware/meson/meson_sm.h>
 #include <linux/module.h>
@@ -132,6 +133,22 @@ static struct meson_secure_pwrc_domain_desc s4_pwrc_domains[] = {
 	SEC_PD(S4_AUDIO,	0),
 };
 
+static struct meson_secure_pwrc_domain_desc c3_pwrc_domains[] = {
+	SEC_PD(C3_NNA,	0),
+	SEC_PD(C3_AUDIO,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_SDIOA,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_EMMC,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_USB_COMB, GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_SDCARD,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_ETH,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_GE2D,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_CVE,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_GDC_WRAP,	GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_ISP_TOP,		GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_MIPI_ISP_WRAP, GENPD_FLAG_ALWAYS_ON),
+	SEC_PD(C3_VCODEC,	0),
+};
+
 static int meson_secure_pwrc_probe(struct platform_device *pdev)
 {
 	int i;
@@ -179,7 +196,7 @@ static int meson_secure_pwrc_probe(struct platform_device *pdev)
 	for (i = 0 ; i < match->count ; ++i) {
 		struct meson_secure_pwrc_domain *dom = &pwrc->domains[i];
 
-		if (!match->domains[i].index)
+		if (!match->domains[i].name)
 			continue;
 
 		dom->pwrc = pwrc;
@@ -207,6 +224,11 @@ static struct meson_secure_pwrc_domain_data meson_secure_s4_pwrc_data = {
 	.count = ARRAY_SIZE(s4_pwrc_domains),
 };
 
+static struct meson_secure_pwrc_domain_data amlogic_secure_c3_pwrc_data = {
+	.domains = c3_pwrc_domains,
+	.count = ARRAY_SIZE(c3_pwrc_domains),
+};
+
 static const struct of_device_id meson_secure_pwrc_match_table[] = {
 	{
 		.compatible = "amlogic,meson-a1-pwrc",
@@ -216,6 +238,10 @@ static const struct of_device_id meson_secure_pwrc_match_table[] = {
 		.compatible = "amlogic,meson-s4-pwrc",
 		.data = &meson_secure_s4_pwrc_data,
 	},
+	{
+		.compatible = "amlogic,c3-pwrc",
+		.data = &amlogic_secure_c3_pwrc_data,
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, meson_secure_pwrc_match_table);
-- 
2.37.1