From: Lucas Stach <l.stach@pengutronix.de>
To: Shawn Guo <shawnguo@kernel.org>, Rob Herring <robh+dt@kernel.org>
Cc: Marek Vasut <marex@denx.de>,
devicetree@vger.kernel.org, Fabio Estevam <festevam@gmail.com>,
Frieder Schrempf <frieder.schrempf@kontron.de>,
patchwork-lst@pengutronix.de, NXP Linux Team <linux-imx@nxp.com>,
kernel@pengutronix.de, Adam Ford <aford173@gmail.com>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 06/13] soc: imx: gpcv2: add runtime PM support for power-domains
Date: Thu, 5 Nov 2020 18:44:27 +0100 [thread overview]
Message-ID: <20201105174434.1817539-7-l.stach@pengutronix.de> (raw)
In-Reply-To: <20201105174434.1817539-1-l.stach@pengutronix.de>
This allows to nest domains into other power domains and have the
parent domain powered up/down as required by the child domains.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
drivers/soc/imx/gpcv2.c | 18 +++++++++++++++++-
1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index d27025e37a9e..87165619a689 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) {
+ 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;
}
}
@@ -200,6 +207,8 @@ static int imx_pgc_power_up(struct generic_pm_domain *genpd)
out_regulator_disable:
if (!IS_ERR(domain->regulator))
regulator_disable(domain->regulator);
+out_put_pm:
+ pm_runtime_put(domain->dev);
return ret;
}
@@ -262,6 +271,8 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd)
}
}
+ pm_runtime_put(domain->dev);
+
return 0;
out_clk_disable:
@@ -519,6 +530,8 @@ 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);
@@ -542,6 +555,7 @@ static int imx_pgc_domain_probe(struct platform_device *pdev)
out_domain_unmap:
regmap_update_bits(domain->regmap, GPC_PGC_CPU_MAPPING,
domain->bits.map, 0);
+ pm_runtime_disable(domain->dev);
return ret;
}
@@ -556,6 +570,8 @@ 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;
}
--
2.20.1
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next prev parent reply other threads:[~2020-11-05 17:46 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-05 17:44 [PATCH v2 00/13] i.MX8MM power domain support Lucas Stach
2020-11-05 17:44 ` [PATCH v2 01/13] soc: imx: gpcv2: move to more ideomatic error handling in probe Lucas Stach
2020-11-16 14:10 ` Adam Ford
2020-11-05 17:44 ` [PATCH v2 02/13] soc: imx: gpcv2: move domain mapping to domain driver probe Lucas Stach
2020-11-05 17:44 ` [PATCH v2 03/13] soc: imx: gpcv2: switch to clk_bulk_* API Lucas Stach
2020-11-05 17:44 ` [PATCH v2 04/13] soc: imx: gpcv2: split power up and power down sequence control Lucas Stach
2020-11-05 17:44 ` [PATCH v2 05/13] soc: imx: gpcv2: wait for ADB400 handshake Lucas Stach
2020-11-05 17:44 ` Lucas Stach [this message]
2020-11-05 17:44 ` [PATCH v2 07/13] soc: imx: gpcv2: allow domains without power-sequence control Lucas Stach
2020-11-05 17:44 ` [PATCH v2 08/13] dt-bindings: imx: gpcv2: add support for optional resets Lucas Stach
2020-11-09 20:15 ` Rob Herring
2020-11-17 14:11 ` Lucas Stach
2020-11-30 9:57 ` Lucas Stach
2021-02-10 14:35 ` Lucas Stach
2021-02-10 14:42 ` Marek Vasut
2021-04-26 9:24 ` Frieder Schrempf
2021-04-29 14:38 ` Frieder Schrempf
2021-03-22 18:19 ` Adam Ford
2020-11-05 17:44 ` [PATCH v2 09/13] soc: " Lucas Stach
2020-11-05 17:44 ` [PATCH v2 10/13] dt-bindings: add defines for i.MX8MM power domains Lucas Stach
2020-11-09 20:34 ` Rob Herring
2020-11-05 17:44 ` [PATCH v2 11/13] soc: imx: gpcv2: add support " Lucas Stach
2020-11-05 17:44 ` [PATCH v2 12/13] arm64: dts: imx8mm: add GPC node and " Lucas Stach
2020-12-09 15:26 ` Frieder Schrempf
2021-01-14 10:39 ` Frieder Schrempf
2021-02-18 12:54 ` Adam Ford
2021-02-18 15:19 ` Adam Ford
2021-03-02 15:01 ` Frieder Schrempf
2021-03-02 16:46 ` Adam Ford
2020-11-05 17:44 ` [PATCH v2 13/13] arm64: dts: imx8mm: put USB controllers into power-domains Lucas Stach
2021-05-06 1:04 [PATCH V2 00/13] soc: imx: gpcv2: support i.MX8MM Peng Fan (OSS)
2021-05-06 1:04 ` [PATCH V2 06/13] soc: imx: gpcv2: add runtime PM support for power-domains Peng Fan (OSS)
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