Input: pm8941-pwrkey - respect reboot_mode for warm reset

On some devices, e.g. Sony Xperia M4 Aqua, warm reset is used to reboot
device into bootloader and recovery mode.  Instead of always doing hard
reset, add a check on reboot_mode for possible warm reset.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Luca Weiss <luca@z3ntu.xyz>
Link: https://lore.kernel.org/r/20210714095850.27185-3-shawn.guo@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c
index 3360960..89af524 100644 (file)
--- a/drivers/input/misc/pm8941-pwrkey.c
+++ b/drivers/input/misc/pm8941-pwrkey.c
@@ -29,6 +29,7 @@
 #define PON_PS_HOLD_RST_CTL2           0x5b
 #define  PON_PS_HOLD_ENABLE            BIT(7)
 #define  PON_PS_HOLD_TYPE_MASK         0x0f
+#define  PON_PS_HOLD_TYPE_WARM_RESET   1
 #define  PON_PS_HOLD_TYPE_SHUTDOWN     4
 #define  PON_PS_HOLD_TYPE_HARD_RESET   7
 
@@ -99,7 +100,10 @@ static int pm8941_reboot_notify(struct notifier_block *nb,
                break;
        case SYS_RESTART:
        default:
-               reset_type = PON_PS_HOLD_TYPE_HARD_RESET;
+               if (reboot_mode == REBOOT_WARM)
+                       reset_type = PON_PS_HOLD_TYPE_WARM_RESET;
+               else
+                       reset_type = PON_PS_HOLD_TYPE_HARD_RESET;
                break;
        }