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
WARNING: multiple messages have this Message-ID (diff)
From: ulf.hansson@linaro.org (Ulf Hansson) To: linux-arm-kernel@lists.infradead.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 17:22 UTC|newest] Thread overview: 165+ 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 ` 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 ` Ulf Hansson 2018-06-20 17:22 ` 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 ` Ulf Hansson 2018-06-20 17:22 ` [PATCH v8 03/26] PM / Domains: Add generic data pointer to genpd_power_state struct Ulf Hansson 2018-06-20 17:22 ` Ulf Hansson 2018-06-24 21:09 ` Rafael J. Wysocki 2018-06-24 21:09 ` Rafael J. Wysocki 2018-06-25 8:34 ` Ulf Hansson 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 2018-06-20 17:22 ` Ulf Hansson 2018-07-19 10:25 ` Rafael J. Wysocki 2018-07-19 10:25 ` Rafael J. Wysocki 2018-08-03 11:43 ` Ulf Hansson 2018-08-03 11:43 ` Ulf Hansson 2018-08-06 9:36 ` Rafael J. Wysocki 2018-08-06 9:36 ` Rafael J. Wysocki 2018-08-24 6:47 ` Ulf Hansson 2018-08-24 6:47 ` Ulf Hansson 2018-09-14 9:26 ` Rafael J. Wysocki 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 2018-06-20 17:22 ` Ulf Hansson 2018-07-19 10:22 ` Rafael J. Wysocki 2018-07-19 10:22 ` Rafael J. Wysocki 2018-08-03 11:44 ` Ulf Hansson 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 2018-06-20 17:22 ` Ulf Hansson 2018-07-19 10:15 ` Rafael J. Wysocki 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 2018-06-20 17:22 ` Ulf Hansson 2018-06-20 17:22 ` Ulf Hansson 2018-07-19 10:32 ` Rafael J. Wysocki 2018-07-19 10:32 ` Rafael J. Wysocki 2018-07-26 9:14 ` Rafael J. Wysocki 2018-07-26 9:14 ` Rafael J. Wysocki 2018-08-03 14:28 ` Ulf Hansson 2018-08-03 14:28 ` Ulf Hansson 2018-08-03 14:28 ` Ulf Hansson 2018-08-06 9:20 ` Rafael J. Wysocki 2018-08-06 9:20 ` Rafael J. Wysocki 2018-08-06 9:20 ` Rafael J. Wysocki 2018-08-09 15:39 ` Lorenzo Pieralisi 2018-08-09 15:39 ` Lorenzo Pieralisi 2018-08-09 15:39 ` Lorenzo Pieralisi 2018-08-24 9:26 ` Ulf Hansson 2018-08-24 9:26 ` Ulf Hansson 2018-08-24 9:26 ` Ulf Hansson 2018-08-24 10:38 ` Lorenzo Pieralisi 2018-08-24 10:38 ` Lorenzo Pieralisi 2018-08-24 10:38 ` Lorenzo Pieralisi 2018-08-30 13:36 ` Ulf Hansson 2018-08-30 13:36 ` Ulf Hansson 2018-08-30 13:36 ` Ulf Hansson 2018-09-13 15:37 ` Lorenzo Pieralisi 2018-09-13 15:37 ` Lorenzo Pieralisi 2018-09-13 15:37 ` Lorenzo Pieralisi 2018-09-14 9:50 ` Rafael J. Wysocki 2018-09-14 9:50 ` Rafael J. Wysocki 2018-09-14 9:50 ` Rafael J. Wysocki 2018-09-14 10:44 ` Lorenzo Pieralisi 2018-09-14 10:44 ` Lorenzo Pieralisi 2018-09-14 10:44 ` Lorenzo Pieralisi 2018-09-14 11:34 ` Rafael J. Wysocki 2018-09-14 11:34 ` Rafael J. Wysocki 2018-09-14 11:34 ` Rafael J. Wysocki 2018-09-14 12:30 ` Lorenzo Pieralisi 2018-09-14 12:30 ` Lorenzo Pieralisi 2018-09-14 12:30 ` Lorenzo Pieralisi 2018-08-24 8:29 ` Ulf Hansson 2018-08-24 8:29 ` Ulf Hansson 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 2018-06-20 17:22 ` Ulf Hansson 2018-07-19 10:35 ` Rafael J. Wysocki 2018-07-19 10:35 ` Rafael J. Wysocki 2018-08-03 11:42 ` Ulf Hansson 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 2018-06-20 17:22 ` Ulf Hansson 2018-07-18 10:11 ` Rafael J. Wysocki 2018-07-18 10:11 ` Rafael J. Wysocki 2018-07-19 10:12 ` Rafael J. Wysocki 2018-07-19 10:12 ` Rafael J. Wysocki 2018-07-19 10:39 ` Rafael J. Wysocki 2018-07-19 10:39 ` Rafael J. Wysocki 2018-08-03 11:42 ` Ulf Hansson 2018-08-03 11:42 ` Ulf Hansson 2018-08-06 9:37 ` Rafael J. Wysocki 2018-08-06 9:37 ` Rafael J. Wysocki 2018-08-08 10:56 ` Lorenzo Pieralisi 2018-08-08 10:56 ` Lorenzo Pieralisi 2018-08-08 18:02 ` Lina Iyer 2018-08-08 18:02 ` Lina Iyer 2018-08-09 8:16 ` Rafael J. Wysocki 2018-08-09 8:16 ` Rafael J. Wysocki 2018-08-09 8:16 ` Rafael J. Wysocki 2018-08-10 20:36 ` Lina Iyer 2018-08-10 20:36 ` Lina Iyer 2018-08-12 9:53 ` Rafael J. Wysocki 2018-08-12 9:53 ` Rafael J. Wysocki 2018-08-12 9:53 ` Rafael J. Wysocki 2018-08-09 9:58 ` Sudeep Holla 2018-08-09 9:58 ` Sudeep Holla 2018-08-09 9:58 ` Sudeep Holla 2018-08-09 10:25 ` Lorenzo Pieralisi 2018-08-09 10:25 ` Lorenzo Pieralisi 2018-08-10 20:18 ` Lina Iyer 2018-08-10 20:18 ` Lina Iyer 2018-08-15 10:44 ` Lorenzo Pieralisi 2018-08-15 10:44 ` Lorenzo Pieralisi 2018-08-24 12:24 ` Ulf Hansson 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 ` 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 ` 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 ` 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 ` 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 2018-06-20 17:22 ` Ulf Hansson [this message] 2018-06-20 17:22 ` [PATCH v8 15/26] drivers: firmware: psci: Split psci_dt_cpu_init_idle() Ulf Hansson 2018-06-20 17:22 ` [PATCH v8 16/26] drivers: firmware: psci: Support hierarchical CPU idle states Ulf Hansson 2018-06-20 17:22 ` 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 ` 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 ` Ulf Hansson 2018-06-20 17:22 ` [PATCH v8 19/26] drivers: firmware: psci: Prepare to use " Ulf Hansson 2018-06-20 17:22 ` 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 ` 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 ` 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 ` 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 ` Ulf Hansson 2018-06-20 17:22 ` [PATCH v8 24/26] drivers: firmware: psci: Deal with CPU hotplug when using OSI mode Ulf Hansson 2018-06-20 17:22 ` Ulf Hansson 2018-11-19 19:50 ` Raju P L S S S N 2018-11-19 19:50 ` Raju P L S S S N 2018-11-20 9:50 ` Ulf Hansson 2018-11-20 9:50 ` Ulf Hansson 2018-11-20 10:47 ` Raju P L S S S N 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 ` Ulf Hansson 2018-06-20 17:22 ` [PATCH v8 26/26] arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 Ulf Hansson 2018-06-20 17:22 ` Ulf Hansson 2018-07-03 5:44 ` [PATCH v8 00/26] PM / Domains: Support hierarchical CPU arrangement (PSCI/ARM) Ulf Hansson 2018-07-03 5:44 ` Ulf Hansson 2018-07-03 7:54 ` Rafael J. Wysocki 2018-07-03 7:54 ` Rafael J. Wysocki 2018-07-09 11:42 ` Ulf Hansson 2018-07-09 11:42 ` Ulf Hansson
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