On 14/02/2019 at 12:24, Claudiu Beznea - M18063 wrote:
> From: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
>
> Add RTT wakeup capability.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
Acked-by: Nicolas Ferre <nicolas.ferre@xxxxxxxxxxxxx>
> ---
> drivers/power/reset/at91-sama5d2_shdwc.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> 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[] = {
>
--
Nicolas Ferre
