From: Ulf Hansson <ulf.hansson@linaro.org>
To: "Rafael J . Wysocki" <rjw@rjwysocki.net>,
Sudeep Holla <sudeep.holla@arm.com>,
Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
linux-pm@vger.kernel.org
Cc: Kevin Hilman <khilman@kernel.org>,
Lina Iyer <ilina@codeaurora.org>,
Lina Iyer <lina.iyer@linaro.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Vincent Guittot <vincent.guittot@linaro.org>,
Stephen Boyd <sboyd@kernel.org>, Juri Lelli <juri.lelli@arm.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v8 15/26] drivers: firmware: psci: Split psci_dt_cpu_init_idle()
Date: Wed, 20 Jun 2018 19:22:15 +0200 [thread overview]
Message-ID: <20180620172226.15012-16-ulf.hansson@linaro.org> (raw)
In-Reply-To: <20180620172226.15012-1-ulf.hansson@linaro.org>
Let's split psci_dt_cpu_init_idle() function into two functions, as to
allow following changes to re-use some of the code.
Cc: Lina Iyer <ilina@codeaurora.org>
Co-developed-by: Lina Iyer <lina.iyer@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/firmware/psci/psci.c | 42 ++++++++++++++++++++----------------
1 file changed, 23 insertions(+), 19 deletions(-)
diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index c80ec1d03274..9788bfc1cf8b 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -270,9 +270,26 @@ static int __init psci_features(u32 psci_func_id)
#ifdef CONFIG_CPU_IDLE
static DEFINE_PER_CPU_READ_MOSTLY(u32 *, psci_power_state);
+static int psci_dt_parse_state_node(struct device_node *np, u32 *state)
+{
+ int err = of_property_read_u32(np, "arm,psci-suspend-param", state);
+
+ if (err) {
+ pr_warn("%pOF missing arm,psci-suspend-param property\n", np);
+ return err;
+ }
+
+ if (!psci_power_state_is_valid(*state)) {
+ pr_warn("Invalid PSCI power state %#x\n", *state);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
{
- int i, ret, count = 0;
+ int i, ret = 0, count = 0;
u32 *psci_states;
struct device_node *state_node;
@@ -291,29 +308,16 @@ static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
return -ENOMEM;
for (i = 0; i < count; i++) {
- u32 state;
-
state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);
+ ret = psci_dt_parse_state_node(state_node, &psci_states[i]);
+ of_node_put(state_node);
- ret = of_property_read_u32(state_node,
- "arm,psci-suspend-param",
- &state);
- if (ret) {
- pr_warn(" * %pOF missing arm,psci-suspend-param property\n",
- state_node);
- of_node_put(state_node);
+ if (ret)
goto free_mem;
- }
- of_node_put(state_node);
- pr_debug("psci-power-state %#x index %d\n", state, i);
- if (!psci_power_state_is_valid(state)) {
- pr_warn("Invalid PSCI power state %#x\n", state);
- ret = -EINVAL;
- goto free_mem;
- }
- psci_states[i] = state;
+ pr_debug("psci-power-state %#x index %d\n", psci_states[i], i);
}
+
/* Idle states parsed correctly, initialize per-cpu pointer */
per_cpu(psci_power_state, cpu) = psci_states;
return 0;
--
2.17.1
next prev parent reply other threads:[~2018-06-20 17:26 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-20 17:22 [PATCH v8 00/26] PM / Domains: Support hierarchical CPU arrangement (PSCI/ARM) Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 01/26] PM / Domains: Don't treat zero found compatible idle states as an error Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 02/26] PM / Domains: Deal with multiple states but no governor in genpd Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 03/26] PM / Domains: Add generic data pointer to genpd_power_state struct Ulf Hansson
2018-06-24 21:09 ` Rafael J. Wysocki
2018-06-25 8:34 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 04/26] PM / Domains: Add support for CPU devices to genpd Ulf Hansson
2018-07-19 10:25 ` Rafael J. Wysocki
2018-08-03 11:43 ` Ulf Hansson
2018-08-06 9:36 ` Rafael J. Wysocki
2018-08-24 6:47 ` Ulf Hansson
2018-09-14 9:26 ` Rafael J. Wysocki
2018-06-20 17:22 ` [PATCH v8 05/26] PM / Domains: Add helper functions to attach/detach CPUs to/from genpd Ulf Hansson
2018-07-19 10:22 ` Rafael J. Wysocki
2018-08-03 11:44 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 06/26] timer: Export next wakeup time of a CPU Ulf Hansson
2018-07-19 10:15 ` Rafael J. Wysocki
2018-06-20 17:22 ` [PATCH v8 07/26] PM / Domains: Add genpd governor for CPUs Ulf Hansson
2018-07-19 10:32 ` Rafael J. Wysocki
2018-07-26 9:14 ` Rafael J. Wysocki
2018-08-03 14:28 ` Ulf Hansson
2018-08-06 9:20 ` Rafael J. Wysocki
2018-08-09 15:39 ` Lorenzo Pieralisi
2018-08-24 9:26 ` Ulf Hansson
2018-08-24 10:38 ` Lorenzo Pieralisi
2018-08-30 13:36 ` Ulf Hansson
2018-09-13 15:37 ` Lorenzo Pieralisi
2018-09-14 9:50 ` Rafael J. Wysocki
2018-09-14 10:44 ` Lorenzo Pieralisi
2018-09-14 11:34 ` Rafael J. Wysocki
2018-09-14 12:30 ` Lorenzo Pieralisi
2018-08-24 8:29 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 08/26] PM / Domains: Extend genpd CPU governor to cope with QoS constraints Ulf Hansson
2018-07-19 10:35 ` Rafael J. Wysocki
2018-08-03 11:42 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 09/26] kernel/cpu_pm: Manage runtime PM in the idle path for CPUs Ulf Hansson
2018-07-18 10:11 ` Rafael J. Wysocki
2018-07-19 10:12 ` Rafael J. Wysocki
2018-07-19 10:39 ` Rafael J. Wysocki
2018-08-03 11:42 ` Ulf Hansson
2018-08-06 9:37 ` Rafael J. Wysocki
2018-08-08 10:56 ` Lorenzo Pieralisi
2018-08-08 18:02 ` Lina Iyer
2018-08-09 8:16 ` Rafael J. Wysocki
2018-08-10 20:36 ` Lina Iyer
2018-08-12 9:53 ` Rafael J. Wysocki
2018-08-09 9:58 ` Sudeep Holla
2018-08-09 10:25 ` Lorenzo Pieralisi
2018-08-10 20:18 ` Lina Iyer
2018-08-15 10:44 ` Lorenzo Pieralisi
2018-08-24 12:24 ` Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 10/26] dt: psci: Update DT bindings to support hierarchical PSCI states Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 11/26] of: base: Add of_get_cpu_state_node() to get idle states for a CPU node Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 12/26] cpuidle: dt: Support hierarchical CPU idle states Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 13/26] drivers: firmware: psci: Move psci to separate directory Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 14/26] MAINTAINERS: Update files for PSCI Ulf Hansson
2018-06-20 17:22 ` Ulf Hansson [this message]
2018-06-20 17:22 ` [PATCH v8 16/26] drivers: firmware: psci: Support hierarchical CPU idle states Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 17/26] drivers: firmware: psci: Simplify error path of psci_dt_init() Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 18/26] drivers: firmware: psci: Announce support for OS initiated suspend mode Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 19/26] drivers: firmware: psci: Prepare to use " Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 20/26] drivers: firmware: psci: Share a few internal PSCI functions Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 21/26] drivers: firmware: psci: Add support for PM domains using genpd Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 22/26] drivers: firmware: psci: Introduce psci_dt_topology_init() Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 23/26] drivers: firmware: psci: Try to attach CPU devices to their PM domains Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 24/26] drivers: firmware: psci: Deal with CPU hotplug when using OSI mode Ulf Hansson
2018-11-19 19:50 ` Raju P L S S S N
2018-11-20 9:50 ` Ulf Hansson
2018-11-20 10:47 ` Raju P L S S S N
2018-06-20 17:22 ` [PATCH v8 25/26] arm64: kernel: Respect the hierarchical CPU topology in DT for PSCI Ulf Hansson
2018-06-20 17:22 ` [PATCH v8 26/26] arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 Ulf Hansson
2018-07-03 5:44 ` [PATCH v8 00/26] PM / Domains: Support hierarchical CPU arrangement (PSCI/ARM) Ulf Hansson
2018-07-03 7:54 ` Rafael J. Wysocki
2018-07-09 11:42 ` Ulf Hansson
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