linux-kernel - Re: [PATCH v2 07/10] soc: mediatek: refine scysys for mediatek platforms

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Date:   Sun, 12 Feb 2017 00:15:14 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Mars Cheng <mars.cheng@...iatek.com>
Cc:     CC Hwang <cc.hwang@...iatek.com>,
        Loda Chou <loda.chou@...iatek.com>,
        Miles Chen <miles.chen@...iatek.com>,
        Jades Shih <jades.shih@...iatek.com>,
        Yingjoe Chen <yingjoe.chen@...iatek.com>,
        My Chuang <my.chuang@...iatek.com>,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        devicetree@...r.kernel.org, wsd_upstream@...iatek.com,
        Marc Zyngier <marc.zyngier@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <will.deacon@....com>,
        Stephen Boyd <sboyd@...eaurora.org>, linux-clk@...r.kernel.org,
        Chieh-Jay Liu <Chieh-Jay.Liu@...iatek.com>,
        Kevin-CW Chen <kevin-cw.chen@...iatek.com>
Subject: Re: [PATCH v2 07/10] soc: mediatek: refine scysys for mediatek
 platforms



On 02/06/2017 01:15 PM, Mars Cheng wrote:
> This adds 2 refinements: avoid fixed spm power statue and add vdec item
>

Please be more explicit in the commit message.

> Signed-off-by: Mars Cheng <mars.cheng@...iatek.com>
> Signed-off-by: Kevin-CW Chen <kevin-cw.chen@...iatek.com>
> ---
>  drivers/soc/mediatek/mtk-scpsys.c |   35 +++++++++++++++++++++++++++++------
>  1 file changed, 29 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
> index beb7916..a8ba800 100644
> --- a/drivers/soc/mediatek/mtk-scpsys.c
> +++ b/drivers/soc/mediatek/mtk-scpsys.c
> @@ -71,6 +71,7 @@ enum clk_id {
>  	CLK_VENC,
>  	CLK_VENC_LT,
>  	CLK_ETHIF,
> +	CLK_VDEC,
>  	CLK_MAX,
>  };
>
> @@ -81,6 +82,7 @@ enum clk_id {
>  	"venc",
>  	"venc_lt",
>  	"ethif",
> +	"vdec",
>  	NULL,
>  };

Put CLK_VDEC addition in the patch where you add support for mt6797.

Thanks,
Matthias

>
> @@ -107,21 +109,28 @@ struct scp_domain {
>  	struct regulator *supply;
>  };
>
> +struct scp_ctrl_reg {
> +	int pwr_sta_offs;
> +	int pwr_sta2nd_offs;
> +};
> +
>  struct scp {
>  	struct scp_domain *domains;
>  	struct genpd_onecell_data pd_data;
>  	struct device *dev;
>  	void __iomem *base;
>  	struct regmap *infracfg;
> +	struct scp_ctrl_reg ctrl_reg;
>  };
>
>  static int scpsys_domain_is_on(struct scp_domain *scpd)
>  {
>  	struct scp *scp = scpd->scp;
>
> -	u32 status = readl(scp->base + SPM_PWR_STATUS) & scpd->data->sta_mask;
> -	u32 status2 = readl(scp->base + SPM_PWR_STATUS_2ND) &
> -				scpd->data->sta_mask;
> +	u32 status = readl(scp->base + scp->ctrl_reg.pwr_sta_offs) &
> +						scpd->data->sta_mask;
> +	u32 status2 = readl(scp->base + scp->ctrl_reg.pwr_sta2nd_offs) &
> +						scpd->data->sta_mask;
>
>  	/*
>  	 * A domain is on when both status bits are set. If only one is set
> @@ -346,7 +355,8 @@ static void init_clks(struct platform_device *pdev, struct clk **clk)
>  }
>
>  static struct scp *init_scp(struct platform_device *pdev,
> -			const struct scp_domain_data *scp_domain_data, int num)
> +			const struct scp_domain_data *scp_domain_data, int num,
> +			struct scp_ctrl_reg *scp_ctrl_reg)
>  {
>  	struct genpd_onecell_data *pd_data;
>  	struct resource *res;
> @@ -358,6 +368,9 @@ static struct scp *init_scp(struct platform_device *pdev,
>  	if (!scp)
>  		return ERR_PTR(-ENOMEM);
>
> +	scp->ctrl_reg.pwr_sta_offs = scp_ctrl_reg->pwr_sta_offs;
> +	scp->ctrl_reg.pwr_sta2nd_offs = scp_ctrl_reg->pwr_sta2nd_offs;
> +
>  	scp->dev = &pdev->dev;
>
>  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> @@ -556,8 +569,13 @@ static void mtk_register_power_domains(struct platform_device *pdev,
>  static int __init scpsys_probe_mt2701(struct platform_device *pdev)
>  {
>  	struct scp *scp;
> +	struct scp_ctrl_reg scp_reg;
>
> -	scp = init_scp(pdev, scp_domain_data_mt2701, NUM_DOMAINS_MT2701);
> +	scp_reg.pwr_sta_offs = SPM_PWR_STATUS;
> +	scp_reg.pwr_sta2nd_offs = SPM_PWR_STATUS_2ND;
> +
> +	scp = init_scp(pdev, scp_domain_data_mt2701, NUM_DOMAINS_MT2701,
> +		       &scp_reg);
>  	if (IS_ERR(scp))
>  		return PTR_ERR(scp);
>
> @@ -667,8 +685,13 @@ static int __init scpsys_probe_mt8173(struct platform_device *pdev)
>  	struct scp *scp;
>  	struct genpd_onecell_data *pd_data;
>  	int ret;
> +	struct scp_ctrl_reg scp_reg;
> +
> +	scp_reg.pwr_sta_offs = SPM_PWR_STATUS;
> +	scp_reg.pwr_sta2nd_offs = SPM_PWR_STATUS_2ND;
>
> -	scp = init_scp(pdev, scp_domain_data_mt8173, NUM_DOMAINS_MT8173);
> +	scp = init_scp(pdev, scp_domain_data_mt8173, NUM_DOMAINS_MT8173,
> +		       &scp_reg);
>  	if (IS_ERR(scp))
>  		return PTR_ERR(scp);
>
>