linux-kernel - [PATCH v3 02/24] ARM: at91: pm: move the setup of soc

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Message-ID: <20210415105010.569620-3-claudiu.beznea@microchip.com>
Date:   Thu, 15 Apr 2021 13:49:48 +0300
From:   Claudiu Beznea <claudiu.beznea@...rochip.com>
To:     <nicolas.ferre@...rochip.com>, <alexandre.belloni@...tlin.com>,
        <ludovic.desroches@...rochip.com>, <robh+dt@...nel.org>,
        <linux@...linux.org.uk>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: [PATCH v3 02/24] ARM: at91: pm: move the setup of soc_pm.bu->suspended

Move the setup of soc_pm.bu->suspended in platform_suspend::begin
function so that the PMC code in charge with clocks suspend/resume
to differentiate b/w standard PM mode and backup mode.

Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 arch/arm/mach-at91/pm.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index e13ceef7ac9a..3742a1fb76db 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -214,6 +214,8 @@ static int at91_sam9x60_config_pmc_ws(void __iomem *pmc, u32 mode, u32 polarity)
  */
 static int at91_pm_begin(suspend_state_t state)
 {
+	int ret;
+
 	switch (state) {
 	case PM_SUSPEND_MEM:
 		soc_pm.data.mode = soc_pm.data.suspend_mode;
@@ -227,7 +229,16 @@ static int at91_pm_begin(suspend_state_t state)
 		soc_pm.data.mode = -1;
 	}
 
-	return at91_pm_config_ws(soc_pm.data.mode, true);
+	ret = at91_pm_config_ws(soc_pm.data.mode, true);
+	if (ret)
+		return ret;
+
+	if (soc_pm.data.mode == AT91_PM_BACKUP)
+		soc_pm.bu->suspended = 1;
+	else if (soc_pm.bu)
+		soc_pm.bu->suspended = 0;
+
+	return 0;
 }
 
 /*
@@ -296,8 +307,6 @@ static int at91_suspend_finish(unsigned long val)
 static void at91_pm_suspend(suspend_state_t state)
 {
 	if (soc_pm.data.mode == AT91_PM_BACKUP) {
-		soc_pm.bu->suspended = 1;
-
 		cpu_suspend(0, at91_suspend_finish);
 
 		/* The SRAM is lost between suspend cycles */
-- 
2.25.1