diff options
author | Elaine Zhang <zhangqing@rock-chips.com> | 2018-10-16 15:26:42 +0800 |
---|---|---|
committer | Tao Huang <huangtao@rock-chips.com> | 2018-10-19 10:56:29 +0800 |
commit | 30b2b0583c6ad3ddf7ca2d0b81cc9d11e6b8efcc (patch) | |
tree | eaf5a46cfafd5e3e6ef1851d234f25b38adaf140 /drivers/soc | |
parent | 4ebc216df25ec673fb5eefd1d4f42487c4c2c06c (diff) |
soc: rockchip: power-domain: Add regulator support
The power domains are supplied by regulators. Add support for them so
that the regulators are properly turned on before a domain is powered up
and turned off when a domain is powered down.
Change-Id: I43ad569e1b82a8e818cbbf2ffcfa6a965d993bbf
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Diffstat (limited to 'drivers/soc')
-rw-r--r-- | drivers/soc/rockchip/pm_domains.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c index 031aafef33f8..ab3674527ea8 100644 --- a/drivers/soc/rockchip/pm_domains.c +++ b/drivers/soc/rockchip/pm_domains.c @@ -18,6 +18,7 @@ #include <linux/clk.h> #include <linux/regmap.h> #include <linux/mfd/syscon.h> +#include <linux/regulator/consumer.h> #include <soc/rockchip/pm_domains.h> #include <soc/rockchip/rockchip_dmc.h> #include <dt-bindings/power/px30-power.h> @@ -76,6 +77,7 @@ struct rockchip_pm_domain { int num_clks; bool is_ignore_pwr; bool is_qos_saved; + struct regulator *supply; struct clk *clks[]; }; @@ -392,6 +394,21 @@ static int rockchip_pd_power(struct rockchip_pm_domain *pd, bool power_on) rockchip_pmu_lock(pd); if (rockchip_pmu_domain_is_on(pd) != power_on) { + if (IS_ERR_OR_NULL(pd->supply) && + PTR_ERR(pd->supply) != -ENODEV) + pd->supply = devm_regulator_get_optional(pd->pmu->dev, + genpd->name); + + if (power_on && !IS_ERR(pd->supply)) { + ret = regulator_enable(pd->supply); + if (ret < 0) { + dev_err(pd->pmu->dev, "failed to set vdd supply enable '%s',\n", + genpd->name); + rockchip_pmu_unlock(pd); + return ret; + } + } + for (i = 0; i < pd->num_clks; i++) clk_enable(pd->clks[i]); @@ -430,6 +447,9 @@ static int rockchip_pd_power(struct rockchip_pm_domain *pd, bool power_on) out: for (i = pd->num_clks - 1; i >= 0; i--) clk_disable(pd->clks[i]); + + if (!power_on && !IS_ERR(pd->supply)) + ret = regulator_disable(pd->supply); } rockchip_pmu_unlock(pd); |