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power: reset: at91-poweroff: add RTT wakeup capability
Add RTT wakeup capability. Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
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1 changed files with 14 additions and 0 deletions
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@ -57,15 +57,21 @@
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#define SHDW_WK_PIN(reg, cfg) ((reg) & AT91_SHDW_WKUPIS((cfg)->wkup_pin_input))
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#define SHDW_RTCWK(reg, cfg) (((reg) >> ((cfg)->sr_rtcwk_shift)) & 0x1)
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#define SHDW_RTTWK(reg, cfg) (((reg) >> ((cfg)->sr_rttwk_shift)) & 0x1)
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#define SHDW_RTCWKEN(cfg) (1 << ((cfg)->mr_rtcwk_shift))
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#define SHDW_RTTWKEN(cfg) (1 << ((cfg)->mr_rttwk_shift))
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#define DBC_PERIOD_US(x) DIV_ROUND_UP_ULL((1000000 * (x)), \
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SLOW_CLOCK_FREQ)
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#define SHDW_CFG_NOT_USED (32)
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struct shdwc_config {
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u8 wkup_pin_input;
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u8 mr_rtcwk_shift;
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u8 mr_rttwk_shift;
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u8 sr_rtcwk_shift;
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u8 sr_rttwk_shift;
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};
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struct shdwc {
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@ -104,6 +110,8 @@ static void __init at91_wakeup_status(struct platform_device *pdev)
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reason = "WKUP pin";
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else if (SHDW_RTCWK(reg, shdw->cfg))
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reason = "RTC";
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else if (SHDW_RTTWK(reg, shdw->cfg))
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reason = "RTT";
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pr_info("AT91: Wake-Up source: %s\n", reason);
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}
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@ -221,6 +229,9 @@ static void at91_shdwc_dt_configure(struct platform_device *pdev)
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if (of_property_read_bool(np, "atmel,wakeup-rtc-timer"))
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mode |= SHDW_RTCWKEN(shdw->cfg);
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if (of_property_read_bool(np, "atmel,wakeup-rtt-timer"))
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mode |= SHDW_RTTWKEN(shdw->cfg);
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dev_dbg(&pdev->dev, "%s: mode = %#x\n", __func__, mode);
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writel(mode, shdw->shdwc_base + AT91_SHDW_MR);
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@ -231,7 +242,10 @@ static void at91_shdwc_dt_configure(struct platform_device *pdev)
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static const struct shdwc_config sama5d2_shdwc_config = {
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.wkup_pin_input = 0,
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.mr_rtcwk_shift = 17,
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.mr_rttwk_shift = SHDW_CFG_NOT_USED,
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.sr_rtcwk_shift = 5,
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.sr_rttwk_shift = SHDW_CFG_NOT_USED,
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};
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};
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static const struct of_device_id at91_shdwc_of_match[] = {
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