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soc: mediatek: add scpsys support active_wakeup

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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>
This commit is contained in:
Eddie Huang 2015-08-26 15:14:41 +08:00 committed by Matthias Brugger
parent bbe379fc7c
commit 47e90154fa
1 changed files with 16 additions and 0 deletions
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16
drivers/soc/mediatek/mtk-scpsys.c
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@ -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