linux-kernel - [RFC PATCH 2/4] power: reset: reboot-mode: Wire reboot

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Message-ID: <20230724223057.1208122-3-quic_eberman@quicinc.com>
Date:   Mon, 24 Jul 2023 15:30:52 -0700
From:   Elliot Berman <quic_eberman@...cinc.com>
To:     Mark Rutland <mark.rutland@....com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Sebastian Reichel <sre@...nel.org>
CC:     Elliot Berman <quic_eberman@...cinc.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Rob Herring" <robh+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <linux-pm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <kernel@...cinc.com>,
        Satya Durga Srinivasu Prabhala <quic_satyap@...cinc.com>,
        Melody Olvera <quic_molvera@...cinc.com>,
        "Prasad Sodagudi" <quic_psodagud@...cinc.com>
Subject: [RFC PATCH 2/4] power: reset: reboot-mode: Wire reboot_mode enum to magic

Allow the reboot mode type to be wired to magic.

Signed-off-by: Elliot Berman <quic_eberman@...cinc.com>
---
 drivers/power/reset/reboot-mode.c | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/drivers/power/reset/reboot-mode.c b/drivers/power/reset/reboot-mode.c
index a646aefa041b..4ea97ccbaf51 100644
--- a/drivers/power/reset/reboot-mode.c
+++ b/drivers/power/reset/reboot-mode.c
@@ -22,12 +22,8 @@ struct mode_info {
 static bool get_reboot_mode_magic(struct reboot_mode_driver *reboot,
 					  const char *cmd, unsigned int *magic)
 {
-	const char *normal = "normal";
 	struct mode_info *info;
 
-	if (!cmd)
-		cmd = normal;
-
 	list_for_each_entry(info, &reboot->head, list) {
 		if (!strcmp(info->mode, cmd)) {
 			*magic = info->magic;
@@ -45,6 +41,32 @@ static int reboot_mode_notify(struct notifier_block *this,
 	unsigned int magic;
 
 	reboot = container_of(this, struct reboot_mode_driver, reboot_notifier);
+
+	if (!cmd) {
+		switch (mode) {
+		case REBOOT_COLD:
+			cmd = "cold";
+			break;
+		case REBOOT_WARM:
+			cmd = "warm";
+			break;
+		case REBOOT_HARD:
+			cmd = "hard";
+			break;
+		case REBOOT_SOFT:
+			cmd = "soft";
+			break;
+		case REBOOT_GPIO:
+			cmd = "gpio";
+			break;
+		}
+		if (get_reboot_mode_magic(reboot, cmd, &magic)) {
+			reboot->write(reboot, magic);
+			return NOTIFY_DONE;
+		}
+		cmd = "normal";
+	}
+
 	if (get_reboot_mode_magic(reboot, cmd, &magic))
 		reboot->write(reboot, magic);
 
-- 
2.41.0