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| author | Lucas Stach <l.stach@pengutronix.de> | 2021-05-10 12:00:38 +0800 |
|---|---|---|
| committer | Lucas Stach <l.stach@pengutronix.de> | 2021-07-21 22:25:56 +0200 |
| commit | 4884392d4d5296326a805f886a97615a61bb2524 (patch) | |
| tree | 34221312d12781225a4c95ed6b3ede220860d39d | |
| parent | 6044408c09eab27fb42d12ba45fe5271ebfb8d91 (diff) | |
| download | linux-4884392d4d5296326a805f886a97615a61bb2524.tar.gz linux-4884392d4d5296326a805f886a97615a61bb2524.tar.xz | |
soc: imx: gpcv2: add runtime PM support for power-domains
This allows to nest domains into other power domains and have the
parent domain powered up/down as required by the child domains.
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
| -rw-r--r-- | drivers/soc/imx/gpcv2.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c index c449cd0e1499..800287abdbea 100644 --- a/drivers/soc/imx/gpcv2.c +++ b/drivers/soc/imx/gpcv2.c @@ -12,6 +12,7 @@ #include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/pm_domain.h> +#include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/sizes.h> @@ -141,11 +142,17 @@ static int imx_pgc_power_up(struct generic_pm_domain *genpd) u32 reg_val; int ret; + ret = pm_runtime_get_sync(domain->dev); + if (ret < 0) { + pm_runtime_put_noidle(domain->dev); + return ret; + } + if (!IS_ERR(domain->regulator)) { ret = regulator_enable(domain->regulator); if (ret) { dev_err(domain->dev, "failed to enable regulator\n"); - return ret; + goto out_put_pm; } } @@ -204,6 +211,8 @@ out_clk_disable: out_regulator_disable: if (!IS_ERR(domain->regulator)) regulator_disable(domain->regulator); +out_put_pm: + pm_runtime_put(domain->dev); return ret; } @@ -266,6 +275,8 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd) } } + pm_runtime_put(domain->dev); + return 0; out_clk_disable: @@ -523,6 +534,8 @@ static int imx_pgc_domain_probe(struct platform_device *pdev) return dev_err_probe(domain->dev, domain->num_clks, "Failed to get domain's clocks\n"); + pm_runtime_enable(domain->dev); + regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING, domain->bits.map, domain->bits.map); @@ -546,6 +559,7 @@ out_genpd_remove: out_domain_unmap: regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING, domain->bits.map, 0); + pm_runtime_disable(domain->dev); return ret; } @@ -560,6 +574,8 @@ static int imx_pgc_domain_remove(struct platform_device *pdev) regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING, domain->bits.map, 0); + pm_runtime_disable(domain->dev); + return 0; } |