soc: mediatek: add scpsys support active_wakeup

Register gpd_dev_ops.active_wakeup function to support keep power
during suspend state. And add flag to each power domain to
decide whether keep power during suspend or not.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index 164a7d8439b148de97d7a3f4153786c52277df5b..55ab08ffc01099313545129327149ccee83f3bf5 100644 (file)
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -68,6 +68,7 @@ struct scp_domain_data {
        u32 sram_pdn_ack_bits;
        u32 bus_prot_mask;
        enum clk_id clk_id;
+       bool active_wakeup;
 };
 
 static const struct scp_domain_data scp_domain_data[] __initconst = {
@@ -128,6 +129,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
                .sram_pdn_bits = GENMASK(11, 8),
                .sram_pdn_ack_bits = GENMASK(15, 12),
                .clk_id = MT8173_CLK_NONE,
+               .active_wakeup = true,
        },
        [MT8173_POWER_DOMAIN_MFG_ASYNC] = {
                .name = "mfg_async",
@@ -172,6 +174,7 @@ struct scp_domain {
        u32 sram_pdn_bits;
        u32 sram_pdn_ack_bits;
        u32 bus_prot_mask;
+       bool active_wakeup;
 };
 
 struct scp {
@@ -371,6 +374,17 @@ out:
        return ret;
 }
 
+static bool scpsys_active_wakeup(struct device *dev)
+{
+       struct generic_pm_domain *genpd;
+       struct scp_domain *scpd;
+
+       genpd = pd_to_genpd(dev->pm_domain);
+       scpd = container_of(genpd, struct scp_domain, genpd);
+
+       return scpd->active_wakeup;
+}
+
 static int __init scpsys_probe(struct platform_device *pdev)
 {
        struct genpd_onecell_data *pd_data;
@@ -428,12 +442,14 @@ static int __init scpsys_probe(struct platform_device *pdev)
                scpd->sram_pdn_bits = data->sram_pdn_bits;
                scpd->sram_pdn_ack_bits = data->sram_pdn_ack_bits;
                scpd->bus_prot_mask = data->bus_prot_mask;
+               scpd->active_wakeup = data->active_wakeup;
                if (data->clk_id != MT8173_CLK_NONE)
                        scpd->clk = clk[data->clk_id];
 
                genpd->name = data->name;
                genpd->power_off = scpsys_power_off;
                genpd->power_on = scpsys_power_on;
+               genpd->dev_ops.active_wakeup = scpsys_active_wakeup;
 
                /*
                 * Initially turn on all domains to make the domains usable