diff options
Diffstat (limited to 'drivers/soc/mediatek/mtk-pm-domains.c')
| -rw-r--r-- | drivers/soc/mediatek/mtk-pm-domains.c | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c index fb70cb3b07b3..b7f697666bdd 100644 --- a/drivers/soc/mediatek/mtk-pm-domains.c +++ b/drivers/soc/mediatek/mtk-pm-domains.c @@ -13,8 +13,10 @@ #include <linux/platform_device.h> #include <linux/pm_domain.h> #include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include <linux/soc/mediatek/infracfg.h> +#include "mt8167-pm-domains.h" #include "mt8173-pm-domains.h" #include "mt8183-pm-domains.h" #include "mt8192-pm-domains.h" @@ -40,6 +42,7 @@ struct scpsys_domain { struct clk_bulk_data *subsys_clks; struct regmap *infracfg; struct regmap *smi; + struct regulator *supply; }; struct scpsys { @@ -187,6 +190,16 @@ static int scpsys_bus_protect_disable(struct scpsys_domain *pd) return _scpsys_bus_protect_disable(pd->data->bp_infracfg, pd->infracfg); } +static int scpsys_regulator_enable(struct regulator *supply) +{ + return supply ? regulator_enable(supply) : 0; +} + +static int scpsys_regulator_disable(struct regulator *supply) +{ + return supply ? regulator_disable(supply) : 0; +} + static int scpsys_power_on(struct generic_pm_domain *genpd) { struct scpsys_domain *pd = container_of(genpd, struct scpsys_domain, genpd); @@ -194,10 +207,14 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) bool tmp; int ret; - ret = clk_bulk_enable(pd->num_clks, pd->clks); + ret = scpsys_regulator_enable(pd->supply); if (ret) return ret; + ret = clk_bulk_enable(pd->num_clks, pd->clks); + if (ret) + goto err_reg; + /* subsys power on */ regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_BIT); regmap_set_bits(scpsys->base, pd->data->ctl_offs, PWR_ON_2ND_BIT); @@ -232,6 +249,8 @@ err_disable_subsys_clks: clk_bulk_disable(pd->num_subsys_clks, pd->subsys_clks); err_pwr_ack: clk_bulk_disable(pd->num_clks, pd->clks); +err_reg: + scpsys_regulator_disable(pd->supply); return ret; } @@ -267,6 +286,8 @@ static int scpsys_power_off(struct generic_pm_domain *genpd) clk_bulk_disable(pd->num_clks, pd->clks); + scpsys_regulator_disable(pd->supply); + return 0; } @@ -275,6 +296,7 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no { const struct scpsys_domain_data *domain_data; struct scpsys_domain *pd; + struct device_node *root_node = scpsys->dev->of_node; struct property *prop; const char *clk_name; int i, ret, num_clks; @@ -307,6 +329,25 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no pd->data = domain_data; pd->scpsys = scpsys; + if (MTK_SCPD_CAPS(pd, MTK_SCPD_DOMAIN_SUPPLY)) { + /* + * Find regulator in current power domain node. + * devm_regulator_get() finds regulator in a node and its child + * node, so set of_node to current power domain node then change + * back to original node after regulator is found for current + * power domain node. + */ + scpsys->dev->of_node = node; + pd->supply = devm_regulator_get(scpsys->dev, "domain"); + scpsys->dev->of_node = root_node; + if (IS_ERR(pd->supply)) { + dev_err_probe(scpsys->dev, PTR_ERR(pd->supply), + "%pOF: failed to get power supply.\n", + node); + return ERR_CAST(pd->supply); + } + } + pd->infracfg = syscon_regmap_lookup_by_phandle_optional(node, "mediatek,infracfg"); if (IS_ERR(pd->infracfg)) return ERR_CAST(pd->infracfg); @@ -446,8 +487,8 @@ static int scpsys_add_subdomain(struct scpsys *scpsys, struct device_node *paren child_pd = scpsys_add_one_domain(scpsys, child); if (IS_ERR(child_pd)) { - ret = PTR_ERR(child_pd); - dev_err(scpsys->dev, "%pOF: failed to get child domain id\n", child); + dev_err_probe(scpsys->dev, PTR_ERR(child_pd), + "%pOF: failed to get child domain id\n", child); goto err_put_node; } @@ -515,6 +556,10 @@ static void scpsys_domain_cleanup(struct scpsys *scpsys) static const struct of_device_id scpsys_of_match[] = { { + .compatible = "mediatek,mt8167-power-controller", + .data = &mt8167_scpsys_data, + }, + { .compatible = "mediatek,mt8173-power-controller", .data = &mt8173_scpsys_data, }, |