From 368520a6b2dd232ea5743a6acd9f056bc30e05b4 Mon Sep 17 00:00:00 2001 From: "Prakash, Prashanth" Date: Wed, 29 Mar 2017 13:49:59 -0600 Subject: ACPI / CPPC: Read lowest nonlinear perf in cppc_get_perf_caps() Read lowest non linear perf in cppc_get_perf_caps so that it can be exposed via sysfs to the usespace. Lowest non linear perf is the lowest performance level at which nonlinear power savings are achieved. Signed-off-by: Prashanth Prakash Signed-off-by: Rafael J. Wysocki --- include/acpi/cppc_acpi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 427a7c3e6c75..34e9680c55db 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -103,6 +103,7 @@ struct cppc_perf_caps { u32 highest_perf; u32 nominal_perf; u32 lowest_perf; + u32 lowest_nonlinear_perf; }; struct cppc_perf_ctrls { -- cgit v1.2.3 From 2c74d8473d19c159a3c3eabaa4819e110c97e8ec Mon Sep 17 00:00:00 2001 From: "Prakash, Prashanth" Date: Wed, 29 Mar 2017 13:50:00 -0600 Subject: ACPI / CPPC: add sysfs entries for CPPC perf capabilities Computed delivered performance using CPPC feedback counters are in the CPPC abstract scale, whereas cppc_cpufreq driver operates in KHz scale. Exposing the CPPC performance capabilities (highest,lowest, nominal, lowest non-linear) will allow userspace to figure out the conversion factor from CPPC abstract scale to KHz. Also rename ctr_wrap_time to wraparound_time so that show_cppc_data() macro will work with it. Signed-off-by: Prashanth Prakash Signed-off-by: Rafael J. Wysocki --- include/acpi/cppc_acpi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 34e9680c55db..2010c0516f27 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -116,7 +116,7 @@ struct cppc_perf_fb_ctrs { u64 reference; u64 delivered; u64 reference_perf; - u64 ctr_wrap_time; + u64 wraparound_time; }; /* Per CPU container for runtime CPPC management. */ -- cgit v1.2.3 From f49c3f90a31f6e19ef3343dcc8809dac1019b59e Mon Sep 17 00:00:00 2001 From: Baoquan He Date: Fri, 7 Apr 2017 16:22:47 +0800 Subject: ACPI / tables: Drop acpi_parse_entries() which is not used Function acpi_parse_entries() is not used any more and if necessary, acpi_table_parse_entries() can be used instead of it, so drop it. Signed-off-by: Baoquan He [ rjw: Subject / changelog ] Signed-off-by: Rafael J. Wysocki --- include/linux/acpi.h | 4 ---- 1 file changed, 4 deletions(-) (limited to 'include') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 9b05886f9773..83abbfceabad 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -233,10 +233,6 @@ int acpi_numa_init (void); int acpi_table_init (void); int acpi_table_parse(char *id, acpi_tbl_table_handler handler); -int __init acpi_parse_entries(char *id, unsigned long table_size, - acpi_tbl_entry_handler handler, - struct acpi_table_header *table_header, - int entry_id, unsigned int max_entries); int __init acpi_table_parse_entries(char *id, unsigned long table_size, int entry_id, acpi_tbl_entry_handler handler, -- cgit v1.2.3 From 8661423eea1a1b58417014716e3f1ba286072379 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Wed, 19 Apr 2017 14:02:08 +0200 Subject: ACPI / utils: Add new acpi_dev_present helper acpi_dev_found just iterates over all ACPI-ids and sees if one matches. This means that it will return true for devices which are in the DSDT but disabled (their _STA method returns 0). For some drivers it is useful to be able to check if a certain HID is not only present in the namespace, but also actually present as in acpi_device_is_present() will return true for the device. For example because if a certain device is present then the driver will want to use an extcon or IIO ADC channel provided by that device. This commit adds a new acpi_dev_present helper which drivers can use to this end. Like acpi_dev_found, acpi_dev_present take a HID as argument, but it also has 2 extra optional arguments to only check for an ACPI device with a specific UID and/or HRV value. This makes it more generic and allows it to replace custom code doing similar checks in several places. Arguably acpi_dev_present is what acpi_dev_found should have been, but there are too many users to just change acpi_dev_found without the risk of breaking something. Signed-off-by: Hans de Goede Reviewed-by: Lukas Wunner Reviewed-by: Mika Westerberg Signed-off-by: Rafael J. Wysocki --- include/acpi/acpi_bus.h | 1 + include/linux/acpi.h | 5 +++++ 2 files changed, 6 insertions(+) (limited to 'include') diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index ef0ae8aaa567..b53c058e7009 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -88,6 +88,7 @@ acpi_evaluate_dsm_typed(acpi_handle handle, const u8 *uuid, u64 rev, u64 func, } bool acpi_dev_found(const char *hid); +bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); #ifdef CONFIG_ACPI diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 9b05886f9773..841a8dc55ade 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -611,6 +611,11 @@ static inline bool acpi_dev_found(const char *hid) return false; } +static inline bool acpi_dev_present(const char *hid, const char *uid, s64 hrv) +{ + return false; +} + static inline bool is_acpi_node(struct fwnode_handle *fwnode) { return false; -- cgit v1.2.3