[PATCH] soc: mediatek: add scpsys support active_wakeup

[Eddie Huang]

On Thu, 2015-07-23 at 14:00 +0800, Eddie Huang wrote:
> 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 at mediatek.com>
> Signed-off-by: Eddie Huang <eddie.huang at mediatek.com>
> ---
>  drivers/soc/mediatek/mtk-scpsys.c | 28 ++++++++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
> 
> diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
> index 43a79ed..fc78b70 100644
> --- a/drivers/soc/mediatek/mtk-scpsys.c
> +++ b/drivers/soc/mediatek/mtk-scpsys.c
> @@ -67,6 +67,7 @@ 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 = {
> @@ -77,6 +78,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
>                 .sram_pdn_bits = GENMASK(11, 8),
>                 .sram_pdn_ack_bits = GENMASK(12, 12),
>                 .clk_id = MT8173_CLK_MM,
> +               .active_wakeup = false,
>         },
>         [MT8173_POWER_DOMAIN_VENC] = {
>                 .name = "venc",
> @@ -85,6 +87,7 @@ 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_MM,
> +               .active_wakeup = false,
>         },
>         [MT8173_POWER_DOMAIN_ISP] = {
>                 .name = "isp",
> @@ -93,6 +96,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
>                 .sram_pdn_bits = GENMASK(11, 8),
>                 .sram_pdn_ack_bits = GENMASK(13, 12),
>                 .clk_id = MT8173_CLK_MM,
> +               .active_wakeup = false,
>         },
>         [MT8173_POWER_DOMAIN_MM] = {
>                 .name = "mm",
> @@ -101,6 +105,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
>                 .sram_pdn_bits = GENMASK(11, 8),
>                 .sram_pdn_ack_bits = GENMASK(12, 12),
>                 .clk_id = MT8173_CLK_MM,
> +               .active_wakeup = false,
>                 .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 |
>                         MT8173_TOP_AXI_PROT_EN_MM_M1,
>         },
> @@ -111,6 +116,7 @@ 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_MM,
> +               .active_wakeup = false,
>         },
>         [MT8173_POWER_DOMAIN_AUDIO] = {
>                 .name = "audio",
> @@ -119,6 +125,7 @@ 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 = false,
>         },
>         [MT8173_POWER_DOMAIN_USB] = {
>                 .name = "usb",
> @@ -127,6 +134,7 @@ 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",
> @@ -135,6 +143,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
>                 .sram_pdn_bits = GENMASK(11, 8),
>                 .sram_pdn_ack_bits = 0,
>                 .clk_id = MT8173_CLK_MFG,
> +               .active_wakeup = false,
>         },
>         [MT8173_POWER_DOMAIN_MFG_2D] = {
>                 .name = "mfg_2d",
> @@ -143,6 +152,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
>                 .sram_pdn_bits = GENMASK(11, 8),
>                 .sram_pdn_ack_bits = GENMASK(13, 12),
>                 .clk_id = MT8173_CLK_NONE,
> +               .active_wakeup = false,
>         },
>         [MT8173_POWER_DOMAIN_MFG] = {
>                 .name = "mfg",
> @@ -151,6 +161,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
>                 .sram_pdn_bits = GENMASK(13, 8),
>                 .sram_pdn_ack_bits = GENMASK(21, 16),
>                 .clk_id = MT8173_CLK_NONE,
> +               .active_wakeup = false,
>                 .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S |
>                         MT8173_TOP_AXI_PROT_EN_MFG_M0 |
>                         MT8173_TOP_AXI_PROT_EN_MFG_M1 |
> @@ -171,6 +182,7 @@ struct scp_domain {
>         u32 sram_pdn_bits;
>         u32 sram_pdn_ack_bits;
>         u32 bus_prot_mask;
> +       bool active_wakeup;
>  };
> 
>  struct scp {
> @@ -370,6 +382,20 @@ out:
>         return ret;
>  }
> 
> +static bool scpsys_active_wakeup(struct device *dev)
> +{
> +       struct generic_pm_domain *genpd;
> +       struct scp_domain *scpd;
> +
> +       if (IS_ERR_OR_NULL(dev->pm_domain))
> +               return false;
> +
> +       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;
> @@ -427,12 +453,14 @@ 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
> --
> 1.8.1.1.dirty
> 

Hi Sascha, Matthias,

Any comment about this patch ?

Eddie
Thanks