Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5c6c513d authored by Claudiu Beznea's avatar Claudiu Beznea Committed by Sebastian Reichel
Browse files

power: reset: at91-poweroff: add RTT wakeup capability 



Add RTT wakeup capability.

Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@microchip.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.com>
parent ce8873c7

drivers/power/reset/at91-sama5d2_shdwc.c

+14 −0
Original line number Diff line number Diff line
@@ -57,15 +57,21 @@ 


#define SHDW_WK_PIN(reg, cfg)	((reg) & AT91_SHDW_WKUPIS((cfg)->wkup_pin_input))

#define SHDW_RTCWK(reg, cfg)	(((reg) >> ((cfg)->sr_rtcwk_shift)) & 0x1)

#define SHDW_RTTWK(reg, cfg)	(((reg) >> ((cfg)->sr_rttwk_shift)) & 0x1)

#define SHDW_RTCWKEN(cfg)	(1 << ((cfg)->mr_rtcwk_shift))

#define SHDW_RTTWKEN(cfg)	(1 << ((cfg)->mr_rttwk_shift))



#define DBC_PERIOD_US(x)	DIV_ROUND_UP_ULL((1000000 * (x)), \

							SLOW_CLOCK_FREQ)



#define SHDW_CFG_NOT_USED	(32)



struct shdwc_config {

	u8 wkup_pin_input;

	u8 mr_rtcwk_shift;

	u8 mr_rttwk_shift;

	u8 sr_rtcwk_shift;

	u8 sr_rttwk_shift;

};



struct shdwc {
@@ -104,6 +110,8 @@ static void __init at91_wakeup_status(struct platform_device *pdev) 
		reason = "WKUP pin";

	else if (SHDW_RTCWK(reg, shdw->cfg))

		reason = "RTC";

	else if (SHDW_RTTWK(reg, shdw->cfg))

		reason = "RTT";



	pr_info("AT91: Wake-Up source: %s\n", reason);

}
@@ -221,6 +229,9 @@ static void at91_shdwc_dt_configure(struct platform_device *pdev) 
	if (of_property_read_bool(np, "atmel,wakeup-rtc-timer"))

		mode |= SHDW_RTCWKEN(shdw->cfg);



	if (of_property_read_bool(np, "atmel,wakeup-rtt-timer"))

		mode |= SHDW_RTTWKEN(shdw->cfg);



	dev_dbg(&pdev->dev, "%s: mode = %#x\n", __func__, mode);

	writel(mode, shdw->shdwc_base + AT91_SHDW_MR);
@@ -231,7 +242,10 @@ static void at91_shdwc_dt_configure(struct platform_device *pdev) 
static const struct shdwc_config sama5d2_shdwc_config = {

	.wkup_pin_input = 0,

	.mr_rtcwk_shift = 17,

	.mr_rttwk_shift	= SHDW_CFG_NOT_USED,

	.sr_rtcwk_shift = 5,

	.sr_rttwk_shift = SHDW_CFG_NOT_USED,

};

};



static const struct of_device_id at91_shdwc_of_match[] = {