[PATCH v4 1/4] soc: mediatek: Refine scpsys to support multiple platform
James Liao
jamesjj.liao at mediatek.com
Mon Feb 1 22:56:52 PST 2016
Hi Matthias,
On Sun, 2016-01-31 at 12:51 +0100, Matthias Brugger wrote:
>
> On 20/01/16 07:08, James Liao wrote:
> > Refine scpsys driver common code to support multiple SoC / platform.
> >
> > Signed-off-by: James Liao <jamesjj.liao at mediatek.com>
> > ---
> > drivers/soc/mediatek/mtk-scpsys.c | 418 ++++++++++++++++++++------------------
> > drivers/soc/mediatek/mtk-scpsys.h | 55 +++++
> > 2 files changed, 270 insertions(+), 203 deletions(-)
> > create mode 100644 drivers/soc/mediatek/mtk-scpsys.h
>
> In general this approach looks fine to me, comments below.
>
> >
> > diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
> > index 0221387..339adfc 100644
> > --- a/drivers/soc/mediatek/mtk-scpsys.c
> > +++ b/drivers/soc/mediatek/mtk-scpsys.c
> > @@ -11,29 +11,17 @@
> > * GNU General Public License for more details.
> > */
> > #include <linux/clk.h>
> > -#include <linux/delay.h>
> > +#include <linux/init.h>
> > #include <linux/io.h>
> > -#include <linux/kernel.h>
> > #include <linux/mfd/syscon.h>
>
> When at it, do we need this include?
syscon_regmap_lookup_by_phandle() is declared in this head file.
> > -#include <linux/init.h>
> > #include <linux/of_device.h>
> > #include <linux/platform_device.h>
> > #include <linux/pm_domain.h>
> > -#include <linux/regmap.h>
> > -#include <linux/soc/mediatek/infracfg.h>
> > #include <linux/regulator/consumer.h>
> > -#include <dt-bindings/power/mt8173-power.h>
> > +#include <linux/soc/mediatek/infracfg.h>
> > +
> > +#include "mtk-scpsys.h"
> >
> > -#define SPM_VDE_PWR_CON 0x0210
> > -#define SPM_MFG_PWR_CON 0x0214
> > -#define SPM_VEN_PWR_CON 0x0230
> > -#define SPM_ISP_PWR_CON 0x0238
> > -#define SPM_DIS_PWR_CON 0x023c
> > -#define SPM_VEN2_PWR_CON 0x0298
> > -#define SPM_AUDIO_PWR_CON 0x029c
> > -#define SPM_MFG_2D_PWR_CON 0x02c0
> > -#define SPM_MFG_ASYNC_PWR_CON 0x02c4
> > -#define SPM_USB_PWR_CON 0x02cc
>
> I would prefer to keep this defines and declare SoC specific ones where
> necessary. It makes the code more readable.
Some register address may be reused by other modules among SoCs, so it's
not easy to maintain the defines when we implement multiple SoC drivers
in the same file. For example, offset 0x0298 is VEN2_PWR_CON on MT8173,
but it is MJC_PWR_CON on other chips.
Furthermore, these register offsets are only used in scp_domain_data[],
and each element has its own power domain name. So I think it's enough
to know which power domain are using these registers and status bits.
> > #define SPM_PWR_STATUS 0x060c
> > #define SPM_PWR_STATUS_2ND 0x0610
> >
> > @@ -43,154 +31,6 @@
> > #define PWR_ON_2ND_BIT BIT(3)
> > #define PWR_CLK_DIS_BIT BIT(4)
> >
> > -#define PWR_STATUS_DISP BIT(3)
> > -#define PWR_STATUS_MFG BIT(4)
> > -#define PWR_STATUS_ISP BIT(5)
> > -#define PWR_STATUS_VDEC BIT(7)
> > -#define PWR_STATUS_VENC_LT BIT(20)
> > -#define PWR_STATUS_VENC BIT(21)
> > -#define PWR_STATUS_MFG_2D BIT(22)
> > -#define PWR_STATUS_MFG_ASYNC BIT(23)
> > -#define PWR_STATUS_AUDIO BIT(24)
> > -#define PWR_STATUS_USB BIT(25)
> > -
>
> Same here.
>
> > -enum clk_id {
> > - MT8173_CLK_NONE,
> > - MT8173_CLK_MM,
> > - MT8173_CLK_MFG,
> > - MT8173_CLK_VENC,
> > - MT8173_CLK_VENC_LT,
> > - MT8173_CLK_MAX,
> > -};
> > -
> > -#define MAX_CLKS 2
> > -
> > -struct scp_domain_data {
> > - const char *name;
> > - u32 sta_mask;
> > - int ctl_offs;
> > - u32 sram_pdn_bits;
> > - u32 sram_pdn_ack_bits;
> > - u32 bus_prot_mask;
> > - enum clk_id clk_id[MAX_CLKS];
> > - bool active_wakeup;
> > -};
> > -
> > -static const struct scp_domain_data scp_domain_data[] __initconst = {
> > - [MT8173_POWER_DOMAIN_VDEC] = {
> > - .name = "vdec",
> > - .sta_mask = PWR_STATUS_VDEC,
> > - .ctl_offs = SPM_VDE_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(12, 12),
> > - .clk_id = {MT8173_CLK_MM},
> > - },
> > - [MT8173_POWER_DOMAIN_VENC] = {
> > - .name = "venc",
> > - .sta_mask = PWR_STATUS_VENC,
> > - .ctl_offs = SPM_VEN_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(15, 12),
> > - .clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC},
> > - },
> > - [MT8173_POWER_DOMAIN_ISP] = {
> > - .name = "isp",
> > - .sta_mask = PWR_STATUS_ISP,
> > - .ctl_offs = SPM_ISP_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(13, 12),
> > - .clk_id = {MT8173_CLK_MM},
> > - },
> > - [MT8173_POWER_DOMAIN_MM] = {
> > - .name = "mm",
> > - .sta_mask = PWR_STATUS_DISP,
> > - .ctl_offs = SPM_DIS_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(12, 12),
> > - .clk_id = {MT8173_CLK_MM},
> > - .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 |
> > - MT8173_TOP_AXI_PROT_EN_MM_M1,
> > - },
> > - [MT8173_POWER_DOMAIN_VENC_LT] = {
> > - .name = "venc_lt",
> > - .sta_mask = PWR_STATUS_VENC_LT,
> > - .ctl_offs = SPM_VEN2_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(15, 12),
> > - .clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC_LT},
> > - },
> > - [MT8173_POWER_DOMAIN_AUDIO] = {
> > - .name = "audio",
> > - .sta_mask = PWR_STATUS_AUDIO,
> > - .ctl_offs = SPM_AUDIO_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(15, 12),
> > - .clk_id = {MT8173_CLK_NONE},
> > - },
> > - [MT8173_POWER_DOMAIN_USB] = {
> > - .name = "usb",
> > - .sta_mask = PWR_STATUS_USB,
> > - .ctl_offs = SPM_USB_PWR_CON,
> > - .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",
> > - .sta_mask = PWR_STATUS_MFG_ASYNC,
> > - .ctl_offs = SPM_MFG_ASYNC_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = 0,
> > - .clk_id = {MT8173_CLK_MFG},
> > - },
> > - [MT8173_POWER_DOMAIN_MFG_2D] = {
> > - .name = "mfg_2d",
> > - .sta_mask = PWR_STATUS_MFG_2D,
> > - .ctl_offs = SPM_MFG_2D_PWR_CON,
> > - .sram_pdn_bits = GENMASK(11, 8),
> > - .sram_pdn_ack_bits = GENMASK(13, 12),
> > - .clk_id = {MT8173_CLK_NONE},
> > - },
> > - [MT8173_POWER_DOMAIN_MFG] = {
> > - .name = "mfg",
> > - .sta_mask = PWR_STATUS_MFG,
> > - .ctl_offs = SPM_MFG_PWR_CON,
> > - .sram_pdn_bits = GENMASK(13, 8),
> > - .sram_pdn_ack_bits = GENMASK(21, 16),
> > - .clk_id = {MT8173_CLK_NONE},
> > - .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S |
> > - MT8173_TOP_AXI_PROT_EN_MFG_M0 |
> > - MT8173_TOP_AXI_PROT_EN_MFG_M1 |
> > - MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT,
> > - },
> > -};
> > -
> > -#define NUM_DOMAINS ARRAY_SIZE(scp_domain_data)
> > -
> > -struct scp;
> > -
> > -struct scp_domain {
> > - struct generic_pm_domain genpd;
> > - struct scp *scp;
> > - struct clk *clk[MAX_CLKS];
> > - u32 sta_mask;
> > - void __iomem *ctl_addr;
> > - u32 sram_pdn_bits;
> > - u32 sram_pdn_ack_bits;
> > - u32 bus_prot_mask;
> > - bool active_wakeup;
> > - struct regulator *supply;
> > -};
> > -
> > -struct scp {
> > - struct scp_domain domains[NUM_DOMAINS];
> > - struct genpd_onecell_data pd_data;
> > - struct device *dev;
> > - void __iomem *base;
> > - struct regmap *infracfg;
> > -};
> > -
> > static int scpsys_domain_is_on(struct scp_domain *scpd)
> > {
> > struct scp *scp = scpd->scp;
> > @@ -412,57 +252,69 @@ static bool scpsys_active_wakeup(struct device *dev)
> > return scpd->active_wakeup;
> > }
> >
> > -static int __init scpsys_probe(struct platform_device *pdev)
> > +static void init_clks(struct platform_device *pdev, struct clk *clk[CLK_MAX])
> > +{
> > + enum clk_id clk_ids[] = {
> > + CLK_MM,
> > + CLK_MFG,
> > + CLK_VENC,
> > + CLK_VENC_LT
> > + };
> > +
> > + static const char * const clk_names[] = {
> > + "mm",
> > + "mfg",
> > + "venc",
> > + "venc_lt",
> > + };
> > +
> > + int i;
> > +
> > + for (i = 0; i < ARRAY_SIZE(clk_ids); i++)
> > + clk[clk_ids[i]] = devm_clk_get(&pdev->dev, clk_names[i]);
> > +}
> > +
> > +struct scp *init_scp(struct platform_device *pdev,
> > + const struct scp_domain_data *scp_domain_data, int num)
> > {
> > struct genpd_onecell_data *pd_data;
> > struct resource *res;
> > - int i, j, ret;
> > + int i, j;
> > struct scp *scp;
> > - struct clk *clk[MT8173_CLK_MAX];
> > + struct clk *clk[CLK_MAX];
> >
> > scp = devm_kzalloc(&pdev->dev, sizeof(*scp), GFP_KERNEL);
> > if (!scp)
> > - return -ENOMEM;
> > + return ERR_PTR(-ENOMEM);
> >
> > scp->dev = &pdev->dev;
> >
> > res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > scp->base = devm_ioremap_resource(&pdev->dev, res);
> > if (IS_ERR(scp->base))
> > - return PTR_ERR(scp->base);
> > -
> > - pd_data = &scp->pd_data;
> > -
> > - pd_data->domains = devm_kzalloc(&pdev->dev,
> > - sizeof(*pd_data->domains) * NUM_DOMAINS, GFP_KERNEL);
> > - if (!pd_data->domains)
> > - return -ENOMEM;
> > -
> > - clk[MT8173_CLK_MM] = devm_clk_get(&pdev->dev, "mm");
> > - if (IS_ERR(clk[MT8173_CLK_MM]))
> > - return PTR_ERR(clk[MT8173_CLK_MM]);
> > -
> > - clk[MT8173_CLK_MFG] = devm_clk_get(&pdev->dev, "mfg");
> > - if (IS_ERR(clk[MT8173_CLK_MFG]))
> > - return PTR_ERR(clk[MT8173_CLK_MFG]);
> > -
> > - clk[MT8173_CLK_VENC] = devm_clk_get(&pdev->dev, "venc");
> > - if (IS_ERR(clk[MT8173_CLK_VENC]))
> > - return PTR_ERR(clk[MT8173_CLK_VENC]);
> > -
> > - clk[MT8173_CLK_VENC_LT] = devm_clk_get(&pdev->dev, "venc_lt");
> > - if (IS_ERR(clk[MT8173_CLK_VENC_LT]))
> > - return PTR_ERR(clk[MT8173_CLK_VENC_LT]);
> > + return ERR_CAST(scp->base);
> >
> > scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
> > "infracfg");
> > if (IS_ERR(scp->infracfg)) {
> > dev_err(&pdev->dev, "Cannot find infracfg controller: %ld\n",
> > PTR_ERR(scp->infracfg));
> > - return PTR_ERR(scp->infracfg);
> > + return ERR_CAST(scp->infracfg);
> > }
> >
> > - for (i = 0; i < NUM_DOMAINS; i++) {
> > + scp->domains = devm_kzalloc(&pdev->dev,
> > + sizeof(*scp->domains) * num, GFP_KERNEL);
> > + if (!scp->domains)
> > + return ERR_PTR(-ENOMEM);
> > +
> > + pd_data = &scp->pd_data;
> > +
> > + pd_data->domains = devm_kzalloc(&pdev->dev,
> > + sizeof(*pd_data->domains) * num, GFP_KERNEL);
> > + if (!pd_data->domains)
> > + return ERR_PTR(-ENOMEM);
> > +
> > + for (i = 0; i < num; i++) {
> > struct scp_domain *scpd = &scp->domains[i];
> > const struct scp_domain_data *data = &scp_domain_data[i];
> >
> > @@ -471,17 +323,31 @@ static int __init scpsys_probe(struct platform_device *pdev)
> > if (PTR_ERR(scpd->supply) == -ENODEV)
> > scpd->supply = NULL;
> > else
> > - return PTR_ERR(scpd->supply);
> > + return ERR_CAST(scpd->supply);
> > }
> > }
> >
> > - pd_data->num_domains = NUM_DOMAINS;
> > + pd_data->num_domains = num;
> >
> > - for (i = 0; i < NUM_DOMAINS; i++) {
> > + init_clks(pdev, clk);
> > +
> > + for (i = 0; i < num; i++) {
> > struct scp_domain *scpd = &scp->domains[i];
> > struct generic_pm_domain *genpd = &scpd->genpd;
> > const struct scp_domain_data *data = &scp_domain_data[i];
> >
> > + for (j = 0; j < MAX_CLKS && data->clk_id[j]; j++) {
> > + struct clk *c = clk[data->clk_id[j]];
> > +
> > + if (IS_ERR(c)) {
> > + dev_err(&pdev->dev, "%s: clk unavailable\n",
> > + data->name);
> > + return ERR_CAST(c);
> > + }
> > +
> > + scpd->clk[j] = c;
> > + }
> > +
> > pd_data->domains[i] = genpd;
> > scpd->scp = scp;
> >
> > @@ -491,13 +357,25 @@ static int __init scpsys_probe(struct platform_device *pdev)
> > scpd->sram_pdn_ack_bits = data->sram_pdn_ack_bits;
> > scpd->bus_prot_mask = data->bus_prot_mask;
> > scpd->active_wakeup = data->active_wakeup;
> > - for (j = 0; j < MAX_CLKS && data->clk_id[j]; j++)
> > - scpd->clk[j] = clk[data->clk_id[j]];
> >
> > genpd->name = data->name;
> > genpd->power_off = scpsys_power_off;
> > genpd->power_on = scpsys_power_on;
> > genpd->dev_ops.active_wakeup = scpsys_active_wakeup;
> > + }
> > +
> > + return scp;
> > +}
> > +
> > +void mtk_register_power_domains(struct platform_device *pdev,
> > + struct scp *scp, int num)
> > +{
> > + struct genpd_onecell_data *pd_data;
> > + int i, ret;
> > +
> > + for (i = 0; i < num; i++) {
> > + struct scp_domain *scpd = &scp->domains[i];
> > + struct generic_pm_domain *genpd = &scpd->genpd;
> >
> > /*
> > * Initially turn on all domains to make the domains usable
> > @@ -516,6 +394,125 @@ static int __init scpsys_probe(struct platform_device *pdev)
> > * valid.
> > */
> >
> > + pd_data = &scp->pd_data;
> > +
> > + ret = of_genpd_add_provider_onecell(pdev->dev.of_node, pd_data);
> > + if (ret)
> > + dev_err(&pdev->dev, "Failed to add OF provider: %d\n", ret);
> > +}
> > +
> > +/*
> > + * MT8173 power domain support
> > + */
> > +
> > +#include <dt-bindings/power/mt8173-power.h>
>
> Please put the includes at the beginning of the file.
> Same for mt2701 of course.
OK, I'll change it in next patch.
Best regards,
James
> > +
> > +static const struct scp_domain_data scp_domain_data_mt8173[] __initconst = {
> > + [MT8173_POWER_DOMAIN_VDEC] = {
> > + .name = "vdec",
> > + .sta_mask = BIT(7),
> > + .ctl_offs = 0x0210,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(12, 12),
> > + .clk_id = {CLK_MM},
> > + },
> > + [MT8173_POWER_DOMAIN_VENC] = {
> > + .name = "venc",
> > + .sta_mask = BIT(21),
> > + .ctl_offs = 0x0230,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(15, 12),
> > + .clk_id = {CLK_MM, CLK_VENC},
> > + },
> > + [MT8173_POWER_DOMAIN_ISP] = {
> > + .name = "isp",
> > + .sta_mask = BIT(5),
> > + .ctl_offs = 0x0238,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(13, 12),
> > + .clk_id = {CLK_MM},
> > + },
> > + [MT8173_POWER_DOMAIN_MM] = {
> > + .name = "mm",
> > + .sta_mask = BIT(3),
> > + .ctl_offs = 0x023c,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(12, 12),
> > + .clk_id = {CLK_MM},
> > + .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 |
> > + MT8173_TOP_AXI_PROT_EN_MM_M1,
> > + },
> > + [MT8173_POWER_DOMAIN_VENC_LT] = {
> > + .name = "venc_lt",
> > + .sta_mask = BIT(20),
> > + .ctl_offs = 0x0298,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(15, 12),
> > + .clk_id = {CLK_MM, CLK_VENC_LT},
> > + },
> > + [MT8173_POWER_DOMAIN_AUDIO] = {
> > + .name = "audio",
> > + .sta_mask = BIT(24),
> > + .ctl_offs = 0x029c,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(15, 12),
> > + .clk_id = {CLK_NONE},
> > + },
> > + [MT8173_POWER_DOMAIN_USB] = {
> > + .name = "usb",
> > + .sta_mask = BIT(25),
> > + .ctl_offs = 0x02cc,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(15, 12),
> > + .clk_id = {CLK_NONE},
> > + .active_wakeup = true,
> > + },
> > + [MT8173_POWER_DOMAIN_MFG_ASYNC] = {
> > + .name = "mfg_async",
> > + .sta_mask = BIT(23),
> > + .ctl_offs = 0x02c4,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = 0,
> > + .clk_id = {CLK_MFG},
> > + },
> > + [MT8173_POWER_DOMAIN_MFG_2D] = {
> > + .name = "mfg_2d",
> > + .sta_mask = BIT(22),
> > + .ctl_offs = 0x02c0,
> > + .sram_pdn_bits = GENMASK(11, 8),
> > + .sram_pdn_ack_bits = GENMASK(13, 12),
> > + .clk_id = {CLK_NONE},
> > + },
> > + [MT8173_POWER_DOMAIN_MFG] = {
> > + .name = "mfg",
> > + .sta_mask = BIT(4),
> > + .ctl_offs = 0x0214,
> > + .sram_pdn_bits = GENMASK(13, 8),
> > + .sram_pdn_ack_bits = GENMASK(21, 16),
> > + .clk_id = {CLK_NONE},
> > + .bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MFG_S |
> > + MT8173_TOP_AXI_PROT_EN_MFG_M0 |
> > + MT8173_TOP_AXI_PROT_EN_MFG_M1 |
> > + MT8173_TOP_AXI_PROT_EN_MFG_SNOOP_OUT,
> > + },
> > +};
> > +
> > +#define NUM_DOMAINS_MT8173 ARRAY_SIZE(scp_domain_data_mt8173)
> > +
> > +static int __init scpsys_probe_mt8173(struct platform_device *pdev)
> > +{
> > + struct scp *scp;
> > + struct genpd_onecell_data *pd_data;
> > + int ret;
> > +
> > + scp = init_scp(pdev, scp_domain_data_mt8173, NUM_DOMAINS_MT8173);
> > + if (IS_ERR(scp))
> > + return PTR_ERR(scp);
> > +
> > + mtk_register_power_domains(pdev, scp, NUM_DOMAINS_MT8173);
> > +
> > + pd_data = &scp->pd_data;
> > +
> > ret = pm_genpd_add_subdomain(pd_data->domains[MT8173_POWER_DOMAIN_MFG_ASYNC],
> > pd_data->domains[MT8173_POWER_DOMAIN_MFG_2D]);
> > if (ret && IS_ENABLED(CONFIG_PM))
> > @@ -526,21 +523,36 @@ static int __init scpsys_probe(struct platform_device *pdev)
> > if (ret && IS_ENABLED(CONFIG_PM))
> > dev_err(&pdev->dev, "Failed to add subdomain: %d\n", ret);
> >
> > - ret = of_genpd_add_provider_onecell(pdev->dev.of_node, pd_data);
> > - if (ret)
> > - dev_err(&pdev->dev, "Failed to add OF provider: %d\n", ret);
> > -
> > return 0;
> > }
> >
> > +/*
> > + * scpsys driver init
> > + */
> > +
> > static const struct of_device_id of_scpsys_match_tbl[] = {
> > {
> > .compatible = "mediatek,mt8173-scpsys",
> > + .data = scpsys_probe_mt8173,
> > }, {
> > /* sentinel */
> > }
> > };
> >
> > +static int __init scpsys_probe(struct platform_device *pdev)
> > +{
> > + int (*probe)(struct platform_device *);
> > + const struct of_device_id *of_id;
> > +
> > + of_id = of_match_node(of_scpsys_match_tbl, pdev->dev.of_node);
> > + if (!of_id || !of_id->data)
> > + return -EINVAL;
> > +
> > + probe = of_id->data;
> > +
> > + return probe(pdev);
> > +}
> > +
> > static struct platform_driver scpsys_drv = {
> > .driver = {
> > .name = "mtk-scpsys",
> > diff --git a/drivers/soc/mediatek/mtk-scpsys.h b/drivers/soc/mediatek/mtk-scpsys.h
> > new file mode 100644
> > index 0000000..e435bc3
> > --- /dev/null
> > +++ b/drivers/soc/mediatek/mtk-scpsys.h
> > @@ -0,0 +1,55 @@
> > +#ifndef __DRV_SOC_MTK_H
> > +#define __DRV_SOC_MTK_H
> > +
> > +enum clk_id {
> > + CLK_NONE,
> > + CLK_MM,
> > + CLK_MFG,
> > + CLK_VENC,
> > + CLK_VENC_LT,
> > + CLK_MAX,
> > +};
> > +
> > +#define MAX_CLKS 2
> > +
> > +struct scp_domain_data {
> > + const char *name;
> > + u32 sta_mask;
> > + int ctl_offs;
> > + u32 sram_pdn_bits;
> > + u32 sram_pdn_ack_bits;
> > + u32 bus_prot_mask;
> > + enum clk_id clk_id[MAX_CLKS];
> > + bool active_wakeup;
> > +};
> > +
> > +struct scp;
> > +
> > +struct scp_domain {
> > + struct generic_pm_domain genpd;
> > + struct scp *scp;
> > + struct clk *clk[MAX_CLKS];
> > + u32 sta_mask;
> > + void __iomem *ctl_addr;
> > + u32 sram_pdn_bits;
> > + u32 sram_pdn_ack_bits;
> > + u32 bus_prot_mask;
> > + bool active_wakeup;
> > + struct regulator *supply;
> > +};
> > +
> > +struct scp {
> > + struct scp_domain *domains;
> > + struct genpd_onecell_data pd_data;
> > + struct device *dev;
> > + void __iomem *base;
> > + struct regmap *infracfg;
> > +};
> > +
> > +struct scp *init_scp(struct platform_device *pdev,
> > + const struct scp_domain_data *scp_domain_data, int num);
> > +
> > +void mtk_register_power_domains(struct platform_device *pdev,
> > + struct scp *scp, int num);
> > +
> > +#endif /* __DRV_SOC_MTK_H */
> >
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