aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/soc/mediatek/mtk-scpsys.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/soc/mediatek/mtk-scpsys.c')
-rw-r--r--drivers/soc/mediatek/mtk-scpsys.c83
1 files changed, 60 insertions, 23 deletions
diff --git a/drivers/soc/mediatek/mtk-scpsys.c b/drivers/soc/mediatek/mtk-scpsys.c
index 164a7d8439b1..4d4203c896c4 100644
--- a/drivers/soc/mediatek/mtk-scpsys.c
+++ b/drivers/soc/mediatek/mtk-scpsys.c
@@ -54,12 +54,16 @@
#define PWR_STATUS_USB BIT(25)
enum clk_id {
+ MT8173_CLK_NONE,
MT8173_CLK_MM,
MT8173_CLK_MFG,
- MT8173_CLK_NONE,
- MT8173_CLK_MAX = MT8173_CLK_NONE,
+ MT8173_CLK_VENC,
+ MT8173_CLK_VENC_LT,
+ MT8173_CLK_MAX,
};
+#define MAX_CLKS 2
+
struct scp_domain_data {
const char *name;
u32 sta_mask;
@@ -67,7 +71,8 @@ struct scp_domain_data {
u32 sram_pdn_bits;
u32 sram_pdn_ack_bits;
u32 bus_prot_mask;
- enum clk_id clk_id;
+ enum clk_id clk_id[MAX_CLKS];
+ bool active_wakeup;
};
static const struct scp_domain_data scp_domain_data[] __initconst = {
@@ -77,7 +82,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_VDE_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(12, 12),
- .clk_id = MT8173_CLK_MM,
+ .clk_id = {MT8173_CLK_MM},
},
[MT8173_POWER_DOMAIN_VENC] = {
.name = "venc",
@@ -85,7 +90,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_VEN_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(15, 12),
- .clk_id = MT8173_CLK_MM,
+ .clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC},
},
[MT8173_POWER_DOMAIN_ISP] = {
.name = "isp",
@@ -93,7 +98,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_ISP_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(13, 12),
- .clk_id = MT8173_CLK_MM,
+ .clk_id = {MT8173_CLK_MM},
},
[MT8173_POWER_DOMAIN_MM] = {
.name = "mm",
@@ -101,7 +106,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_DIS_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(12, 12),
- .clk_id = MT8173_CLK_MM,
+ .clk_id = {MT8173_CLK_MM},
.bus_prot_mask = MT8173_TOP_AXI_PROT_EN_MM_M0 |
MT8173_TOP_AXI_PROT_EN_MM_M1,
},
@@ -111,7 +116,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_VEN2_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(15, 12),
- .clk_id = MT8173_CLK_MM,
+ .clk_id = {MT8173_CLK_MM, MT8173_CLK_VENC_LT},
},
[MT8173_POWER_DOMAIN_AUDIO] = {
.name = "audio",
@@ -119,7 +124,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_AUDIO_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(15, 12),
- .clk_id = MT8173_CLK_NONE,
+ .clk_id = {MT8173_CLK_NONE},
},
[MT8173_POWER_DOMAIN_USB] = {
.name = "usb",
@@ -127,7 +132,8 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_USB_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = GENMASK(15, 12),
- .clk_id = MT8173_CLK_NONE,
+ .clk_id = {MT8173_CLK_NONE},
+ .active_wakeup = true,
},
[MT8173_POWER_DOMAIN_MFG_ASYNC] = {
.name = "mfg_async",
@@ -135,7 +141,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_MFG_ASYNC_PWR_CON,
.sram_pdn_bits = GENMASK(11, 8),
.sram_pdn_ack_bits = 0,
- .clk_id = MT8173_CLK_MFG,
+ .clk_id = {MT8173_CLK_MFG},
},
[MT8173_POWER_DOMAIN_MFG_2D] = {
.name = "mfg_2d",
@@ -143,7 +149,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.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,
+ .clk_id = {MT8173_CLK_NONE},
},
[MT8173_POWER_DOMAIN_MFG] = {
.name = "mfg",
@@ -151,7 +157,7 @@ static const struct scp_domain_data scp_domain_data[] __initconst = {
.ctl_offs = SPM_MFG_PWR_CON,
.sram_pdn_bits = GENMASK(13, 8),
.sram_pdn_ack_bits = GENMASK(21, 16),
- .clk_id = MT8173_CLK_NONE,
+ .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 |
@@ -166,12 +172,13 @@ struct scp;
struct scp_domain {
struct generic_pm_domain genpd;
struct scp *scp;
- struct clk *clk;
+ 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 scp {
@@ -212,11 +219,16 @@ static int scpsys_power_on(struct generic_pm_domain *genpd)
u32 sram_pdn_ack = scpd->sram_pdn_ack_bits;
u32 val;
int ret;
+ int i;
+
+ for (i = 0; i < MAX_CLKS && scpd->clk[i]; i++) {
+ ret = clk_prepare_enable(scpd->clk[i]);
+ if (ret) {
+ for (--i; i >= 0; i--)
+ clk_disable_unprepare(scpd->clk[i]);
- if (scpd->clk) {
- ret = clk_prepare_enable(scpd->clk);
- if (ret)
goto err_clk;
+ }
}
val = readl(ctl_addr);
@@ -282,7 +294,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd)
return 0;
err_pwr_ack:
- clk_disable_unprepare(scpd->clk);
+ for (i = MAX_CLKS - 1; i >= 0; i--) {
+ if (scpd->clk[i])
+ clk_disable_unprepare(scpd->clk[i]);
+ }
err_clk:
dev_err(scp->dev, "Failed to power on domain %s\n", genpd->name);
@@ -299,6 +314,7 @@ static int scpsys_power_off(struct generic_pm_domain *genpd)
u32 pdn_ack = scpd->sram_pdn_ack_bits;
u32 val;
int ret;
+ int i;
if (scpd->bus_prot_mask) {
ret = mtk_infracfg_set_bus_protection(scp->infracfg,
@@ -360,8 +376,8 @@ static int scpsys_power_off(struct generic_pm_domain *genpd)
expired = true;
}
- if (scpd->clk)
- clk_disable_unprepare(scpd->clk);
+ for (i = 0; i < MAX_CLKS && scpd->clk[i]; i++)
+ clk_disable_unprepare(scpd->clk[i]);
return 0;
@@ -371,11 +387,22 @@ 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;
struct resource *res;
- int i, ret;
+ int i, j, ret;
struct scp *scp;
struct clk *clk[MT8173_CLK_MAX];
@@ -405,6 +432,14 @@ static int __init scpsys_probe(struct platform_device *pdev)
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]);
+
scp->infracfg = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
"infracfg");
if (IS_ERR(scp->infracfg)) {
@@ -428,12 +463,14 @@ 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;
- if (data->clk_id != MT8173_CLK_NONE)
- scpd->clk = clk[data->clk_id];
+ 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;
/*
* Initially turn on all domains to make the domains usable
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.