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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-02-24 20:00:32 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-02-24 20:00:32 +0100
commit46501add157dd9ff34b70380baee4915b2aa04f1 (patch)
treedc71df4dd8bce2b7fb531e3e7aa498547ea7d2fc /drivers/soc
parentcfb92440ee71adcc2105b0890bb01ac3cddb8507 (diff)
parentf1ebef9e55f3c49063b575e97d2019832b8f8ef9 (diff)
Merge tag 'dtpm-v5.18' of https://git.linaro.org/people/daniel.lezcano/linux
Pull DTPM (Dynamic Thermal Power Management) changes for 5.18-rc1 from Daniel Lezcano: "- Added dtpm hierarchy description (Daniel Lezcano) - Changed the locking scheme (Daniel Lezcano) - Fixed dtpm_cpu cleanup at exit time and missing virtual dtpm pointer release (Daniel Lezcano)" * tag 'dtpm-v5.18' of https://git.linaro.org/people/daniel.lezcano/linux: dtpm/soc/rk3399: Add the ability to unload the module powercap/dtpm_cpu: Add exit function powercap/dtpm: Move the 'root' reset place powercap/dtpm: Destroy hierarchy function powercap/dtpm: Fixup kfree for virtual node powercap/dtpm_cpu: Reset per_cpu variable in the release function powercap/dtpm: Change locking scheme rockchip/soc/drivers: Add DTPM description for rk3399 powercap/drivers/dtpm: Add dtpm devfreq with energy model support powercap/drivers/dtpm: Add CPU DT initialization support powercap/drivers/dtpm: Add hierarchy creation powercap/drivers/dtpm: Convert the init table section to a simple array
Diffstat (limited to 'drivers/soc')
-rw-r--r--drivers/soc/rockchip/Kconfig8
-rw-r--r--drivers/soc/rockchip/Makefile1
-rw-r--r--drivers/soc/rockchip/dtpm.c65
3 files changed, 74 insertions, 0 deletions
diff --git a/drivers/soc/rockchip/Kconfig b/drivers/soc/rockchip/Kconfig
index 25eb2c1e31bb..156ac0e0c8fe 100644
--- a/drivers/soc/rockchip/Kconfig
+++ b/drivers/soc/rockchip/Kconfig
@@ -34,4 +34,12 @@ config ROCKCHIP_PM_DOMAINS
If unsure, say N.
+config ROCKCHIP_DTPM
+ tristate "Rockchip DTPM hierarchy"
+ depends on DTPM && m
+ help
+ Describe the hierarchy for the Dynamic Thermal Power
+ Management tree on this platform. That will create all the
+ power capping capable devices.
+
endif
diff --git a/drivers/soc/rockchip/Makefile b/drivers/soc/rockchip/Makefile
index 875032f7344e..05f31a4e743c 100644
--- a/drivers/soc/rockchip/Makefile
+++ b/drivers/soc/rockchip/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_ROCKCHIP_GRF) += grf.o
obj-$(CONFIG_ROCKCHIP_IODOMAIN) += io-domain.o
obj-$(CONFIG_ROCKCHIP_PM_DOMAINS) += pm_domains.o
+obj-$(CONFIG_ROCKCHIP_DTPM) += dtpm.o
diff --git a/drivers/soc/rockchip/dtpm.c b/drivers/soc/rockchip/dtpm.c
new file mode 100644
index 000000000000..5a23784b5221
--- /dev/null
+++ b/drivers/soc/rockchip/dtpm.c
@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2021 Linaro Limited
+ *
+ * Author: Daniel Lezcano <daniel.lezcano@linaro.org>
+ *
+ * DTPM hierarchy description
+ */
+#include <linux/dtpm.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+static struct dtpm_node __initdata rk3399_hierarchy[] = {
+ [0]{ .name = "rk3399",
+ .type = DTPM_NODE_VIRTUAL },
+ [1]{ .name = "package",
+ .type = DTPM_NODE_VIRTUAL,
+ .parent = &rk3399_hierarchy[0] },
+ [2]{ .name = "/cpus/cpu@0",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [3]{ .name = "/cpus/cpu@1",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [4]{ .name = "/cpus/cpu@2",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [5]{ .name = "/cpus/cpu@3",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [6]{ .name = "/cpus/cpu@100",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [7]{ .name = "/cpus/cpu@101",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [8]{ .name = "/gpu@ff9a0000",
+ .type = DTPM_NODE_DT,
+ .parent = &rk3399_hierarchy[1] },
+ [9]{ /* sentinel */ }
+};
+
+static struct of_device_id __initdata rockchip_dtpm_match_table[] = {
+ { .compatible = "rockchip,rk3399", .data = rk3399_hierarchy },
+ {},
+};
+
+static int __init rockchip_dtpm_init(void)
+{
+ return dtpm_create_hierarchy(rockchip_dtpm_match_table);
+}
+module_init(rockchip_dtpm_init);
+
+static void __exit rockchip_dtpm_exit(void)
+{
+ return dtpm_destroy_hierarchy();
+}
+module_exit(rockchip_dtpm_exit);
+
+MODULE_SOFTDEP("pre: panfrost cpufreq-dt");
+MODULE_DESCRIPTION("Rockchip DTPM driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:dtpm");
+MODULE_AUTHOR("Daniel Lezcano <daniel.lezcano@kernel.org");