diff options
| author | Claudiu Beznea <claudiu.beznea@microchip.com> | 2019-02-21 16:45:48 +0300 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2019-04-05 18:50:45 +0300 |
| commit | 5c6c513ddbc702b11ceef1e881d95a061f6b854f (patch) | |
| tree | e45ef56016b9cfa7e440708194ec46a1d386cd8c /drivers/power/reset | |
| parent | ce8873c77c840977722deb73d7649653a4fcf31a (diff) | |
| download | linux-5c6c513ddbc702b11ceef1e881d95a061f6b854f.tar.xz | |
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>
Diffstat (limited to 'drivers/power/reset')
| -rw-r--r-- | drivers/power/reset/at91-sama5d2_shdwc.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/power/reset/at91-sama5d2_shdwc.c b/drivers/power/reset/at91-sama5d2_shdwc.c index 2b686c55b717..0747e0cdf350 100644 --- a/drivers/power/reset/at91-sama5d2_shdwc.c +++ b/drivers/power/reset/at91-sama5d2_shdwc.c @@ -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[] = { |