From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
To: robh+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de
Cc: kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com,
p.zabel@pengutronix.de, l.stach@pengutronix.de, krzk@kernel.org,
agx@sigxcpu.org, marex@denx.de, andrew.smirnov@gmail.com,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, ping.bai@nxp.com,
frieder.schrempf@kontron.de, aford173@gmail.com,
abel.vesa@nxp.com
Subject: [PATCH 06/16] soc: imx: gpcv2: add runtime PM support for power-domains
Date: Thu, 29 Apr 2021 15:30:40 +0800 [thread overview]
Message-ID: <20210429073050.21039-7-peng.fan@oss.nxp.com> (raw)
In-Reply-To: <20210429073050.21039-1-peng.fan@oss.nxp.com>
From: Lucas Stach <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;
}
--
2.30.0
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next prev parent reply other threads:[~2021-04-29 7:02 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 7:30 [PATCH 00/16] soc: imx: gpcv2: support i.MX8MM Peng Fan (OSS)
2021-04-29 7:30 ` [PATCH 01/16] soc: imx: gpcv2: move to more ideomatic error handling in probe Peng Fan (OSS)
2021-05-03 13:26 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 02/16] soc: imx: gpcv2: move domain mapping to domain driver probe Peng Fan (OSS)
2021-05-03 13:27 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 03/16] soc: imx: gpcv2: switch to clk_bulk_* API Peng Fan (OSS)
2021-05-03 13:37 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 04/16] soc: imx: gpcv2: split power up and power down sequence control Peng Fan (OSS)
2021-05-03 14:13 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 05/16] soc: imx: gpcv2: wait for ADB400 handshake Peng Fan (OSS)
2021-04-29 7:30 ` Peng Fan (OSS) [this message]
2021-05-03 14:18 ` [PATCH 06/16] soc: imx: gpcv2: add runtime PM support for power-domains Frieder Schrempf
2021-04-29 7:30 ` [PATCH 07/16] soc: imx: gpcv2: allow domains without power-sequence control Peng Fan (OSS)
2021-05-03 14:21 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 08/16] dt-bindings: imx: gpcv2: add support for optional resets Peng Fan (OSS)
2021-05-03 14:27 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 09/16] soc: " Peng Fan (OSS)
2021-05-03 14:30 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 10/16] dt-bindings: power: add defines for i.MX8MM power domains Peng Fan (OSS)
2021-05-03 19:37 ` Rob Herring
2021-04-29 7:30 ` [PATCH 11/16] soc: imx: gpcv2: add support " Peng Fan (OSS)
2021-05-03 14:37 ` Frieder Schrempf
2021-04-29 7:30 ` [PATCH 12/16] soc: imx: gpcv2: Add support for missing i.MX8MM VPU/DISPMIX " Peng Fan (OSS)
2021-04-29 7:30 ` [PATCH 13/16] soc: imx: gpcv2: correct pm_runtime_get_sync usage Peng Fan (OSS)
2021-04-29 14:25 ` Lucas Stach
2021-04-30 4:43 ` Peng Fan (OSS)
2021-04-29 7:30 ` [PATCH 14/16] soc: imx: gpcv2: move reset assert after requesting domain power up Peng Fan (OSS)
2021-04-29 14:28 ` Lucas Stach
2021-04-30 4:51 ` Peng Fan (OSS)
2021-04-29 7:30 ` [PATCH 15/16] soc: imx: gpcv2: support reset defer probe Peng Fan (OSS)
2021-04-29 8:39 ` Ahmad Fatoum
2021-04-29 14:30 ` Lucas Stach
2021-04-30 4:51 ` Peng Fan (OSS)
2021-04-29 7:30 ` [PATCH 16/16] soc: imx: gpcv2: remove waiting handshake in power up Peng Fan (OSS)
2021-04-29 14:34 ` Lucas Stach
2021-04-30 4:52 ` Peng Fan (OSS)
2021-04-30 7:14 ` Peng Fan (OSS)
2021-04-30 8:47 ` Lucas Stach
2021-04-29 12:39 ` [PATCH 00/16] soc: imx: gpcv2: support i.MX8MM Adam Ford
2021-04-30 1:33 ` Peng Fan
2021-04-30 3:05 ` Adam Ford
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