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([2a05:6e02:1041:c10:c456:8337:99aa:2667]) by smtp.gmail.com with ESMTPSA id l19-20020a5d5273000000b00228dbf15072sm13060941wrc.62.2022.10.04.10.27.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Oct 2022 10:27:14 -0700 (PDT) From: Daniel Lezcano To: rafael@kernel.org Cc: linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Zhang Rui , Len Brown Subject: [PATCH RFC 6/9] thermal/acpi: Encapsualte in functions the trip initialization Date: Tue, 4 Oct 2022 19:26:55 +0200 Message-Id: <20221004172658.2302511-7-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221004172658.2302511-1-daniel.lezcano@linaro.org> References: <12068304.O9o76ZdvQC@kreacher> <20221004172658.2302511-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org The thermal trip update function is a bit difficult to read. In order to improve its readability, let's encapuslate the different parts into dedicated functions. Signed-off-by: Daniel Lezcano --- drivers/acpi/thermal.c | 267 ++++++++++++++++++++++++----------------- 1 file changed, 159 insertions(+), 108 deletions(-) diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 9841b597a9c7..e62381561255 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -246,117 +246,123 @@ do { \ "Please report to linux-acpi@vger.kernel.org\n", str); \ } while (0) -static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) +static int acpi_thermal_trips_update_critical(struct acpi_thermal *tz, int flag) { acpi_status status = AE_OK; unsigned long long tmp; - struct acpi_handle_list devices; - int valid = 0; - int i; - /* Critical Shutdown */ - if (flag & ACPI_TRIPS_CRITICAL) { - status = acpi_evaluate_integer(tz->device->handle, + status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL, &tmp); - tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature = tmp; - /* - * Treat freezing temperatures as invalid as well; some - * BIOSes return really low values and cause reboots at startup. - * Below zero (Celsius) values clearly aren't right for sure.. - * ... so lets discard those as invalid. - */ - if (ACPI_FAILURE(status)) { - tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0; - acpi_handle_debug(tz->device->handle, - "No critical threshold\n"); - } else if (tmp <= 2732) { - pr_info(FW_BUG "Invalid critical threshold (%llu)\n", - tmp); + tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature = tmp; + /* + * Treat freezing temperatures as invalid as well; some + * BIOSes return really low values and cause reboots at startup. + * Below zero (Celsius) values clearly aren't right for sure.. + * ... so lets discard those as invalid. + */ + if (ACPI_FAILURE(status)) { + tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0; + acpi_handle_debug(tz->device->handle, + "No critical threshold\n"); + } else if (tmp <= 2732) { + pr_info(FW_BUG "Invalid critical threshold (%llu)\n", + tmp); + tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0; + } else { + tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 1; + acpi_handle_debug(tz->device->handle, + "Found critical threshold [%lu]\n", + tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature); + } + if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid == 1) { + if (crt == -1) { tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0; - } else { - tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 1; - acpi_handle_debug(tz->device->handle, - "Found critical threshold [%lu]\n", - tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature); - } - if (tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid == 1) { - if (crt == -1) { - tz->trips[ACPI_THERMAL_TRIP_CRITICAL].flags.valid = 0; - } else if (crt > 0) { - unsigned long crt_k = celsius_to_deci_kelvin(crt); - - /* - * Allow override critical threshold - */ - if (crt_k > tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature) - pr_info("Critical threshold %d C\n", crt); - - tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature = crt_k; - } + } else if (crt > 0) { + unsigned long crt_k = celsius_to_deci_kelvin(crt); + + /* + * Allow override critical threshold + */ + if (crt_k > tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature) + pr_info("Critical threshold %d C\n", crt); + + tz->trips[ACPI_THERMAL_TRIP_CRITICAL].temperature = crt_k; } } - /* Critical Sleep (optional) */ - if (flag & ACPI_TRIPS_HOT) { - status = acpi_evaluate_integer(tz->device->handle, - "_HOT", NULL, &tmp); - if (ACPI_FAILURE(status)) { - tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid = 0; - acpi_handle_debug(tz->device->handle, - "No hot threshold\n"); - } else { - tz->trips[ACPI_THERMAL_TRIP_HOT].temperature = tmp; - tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid = 1; - acpi_handle_debug(tz->device->handle, - "Found hot threshold [%lu]\n", - tz->trips[ACPI_THERMAL_TRIP_HOT].temperature); - } + return 0; +} + +static int acpi_thermal_trips_update_hot(struct acpi_thermal *tz, int flag) +{ + acpi_status status = AE_OK; + unsigned long long tmp; + + status = acpi_evaluate_integer(tz->device->handle, + "_HOT", NULL, &tmp); + if (ACPI_FAILURE(status)) { + tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid = 0; + acpi_handle_debug(tz->device->handle, + "No hot threshold\n"); + } else { + tz->trips[ACPI_THERMAL_TRIP_HOT].temperature = tmp; + tz->trips[ACPI_THERMAL_TRIP_HOT].flags.valid = 1; + acpi_handle_debug(tz->device->handle, + "Found hot threshold [%lu]\n", + tz->trips[ACPI_THERMAL_TRIP_HOT].temperature); } - /* Passive (optional) */ - if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) || - (flag == ACPI_TRIPS_INIT)) { - valid = tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid; - if (psv == -1) { - status = AE_SUPPORT; - } else if (psv > 0) { - tmp = celsius_to_deci_kelvin(psv); - status = AE_OK; - } else { - status = acpi_evaluate_integer(tz->device->handle, - "_PSV", NULL, &tmp); - } + return 0; +} - if (ACPI_FAILURE(status)) - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; - else { - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].temperature = tmp; - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 1; - if (flag == ACPI_TRIPS_INIT) { - status = acpi_evaluate_integer( - tz->device->handle, "_TC1", - NULL, &tmp); - if (ACPI_FAILURE(status)) - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; - else - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc1 = tmp; - status = acpi_evaluate_integer( - tz->device->handle, "_TC2", - NULL, &tmp); - if (ACPI_FAILURE(status)) - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; - else - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc2 = tmp; - status = acpi_evaluate_integer( - tz->device->handle, "_TSP", - NULL, &tmp); - if (ACPI_FAILURE(status)) - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; - else - tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tsp = tmp; - } +static int acpi_thermal_trips_update_passive(struct acpi_thermal *tz, int flag) +{ + acpi_status status = AE_OK; + unsigned long long tmp; + struct acpi_handle_list devices; + int valid = 0; + + valid = tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid; + if (psv == -1) { + status = AE_SUPPORT; + } else if (psv > 0) { + tmp = celsius_to_deci_kelvin(psv); + status = AE_OK; + } else { + status = acpi_evaluate_integer(tz->device->handle, + "_PSV", NULL, &tmp); + } + + if (ACPI_FAILURE(status)) + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; + else { + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].temperature = tmp; + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 1; + if (flag == ACPI_TRIPS_INIT) { + status = acpi_evaluate_integer( + tz->device->handle, "_TC1", + NULL, &tmp); + if (ACPI_FAILURE(status)) + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; + else + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc1 = tmp; + status = acpi_evaluate_integer( + tz->device->handle, "_TC2", + NULL, &tmp); + if (ACPI_FAILURE(status)) + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; + else + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tc2 = tmp; + status = acpi_evaluate_integer( + tz->device->handle, "_TSP", + NULL, &tmp); + if (ACPI_FAILURE(status)) + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid = 0; + else + tz->trips[ACPI_THERMAL_TRIP_PASSIVE].tsp = tmp; } } + if ((flag & ACPI_TRIPS_DEVICES) && tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) { memset(&devices, 0, sizeof(struct acpi_handle_list)); status = acpi_evaluate_reference(tz->device->handle, "_PSL", @@ -376,12 +382,23 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device"); } } + if ((flag & ACPI_TRIPS_PASSIVE) || (flag & ACPI_TRIPS_DEVICES)) { if (valid != tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state"); + ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "state"); } - /* Active (optional) */ + return 0; +} + +static int acpi_thermal_trips_update_active(struct acpi_thermal *tz, int flag) +{ + acpi_status status = AE_OK; + unsigned long long tmp; + struct acpi_handle_list devices; + int valid = 0; + int i; + for (i = ACPI_THERMAL_TRIP_ACTIVE; i < ACPI_THERMAL_MAX_ACTIVE; i++) { char name[5] = { '_', 'A', 'C', ('0' + i), '\0' }; valid = tz->trips[i].flags.valid; @@ -447,17 +464,51 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) break; } - if (flag & ACPI_TRIPS_DEVICES) { - memset(&devices, 0, sizeof(devices)); - status = acpi_evaluate_reference(tz->device->handle, "_TZD", - NULL, &devices); - if (ACPI_SUCCESS(status) - && memcmp(&tz->devices, &devices, sizeof(devices))) { - tz->devices = devices; - ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device"); - } + return 0; +} + +static int acpi_thermal_trips_update_devices(struct acpi_thermal *tz, int flag) +{ + acpi_status status = AE_OK; + struct acpi_handle_list devices; + + memset(&devices, 0, sizeof(devices)); + status = acpi_evaluate_reference(tz->device->handle, "_TZD", + NULL, &devices); + if (ACPI_SUCCESS(status) + && memcmp(&tz->devices, &devices, sizeof(devices))) { + tz->devices = devices; + ACPI_THERMAL_TRIPS_EXCEPTION(flag, tz, "device"); + } + + return 0; +} + +static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) +{ + /* Critical Shutdown */ + if (flag & ACPI_TRIPS_CRITICAL) { + acpi_thermal_trips_update_critical(tz, flag); } + /* Critical Sleep (optional) */ + if (flag & ACPI_TRIPS_HOT) { + acpi_thermal_trips_update_hot(tz, flag); + } + + /* Passive (optional) */ + if (((flag & ACPI_TRIPS_PASSIVE) && tz->trips[ACPI_THERMAL_TRIP_PASSIVE].flags.valid) || + (flag == ACPI_TRIPS_INIT)) { + acpi_thermal_trips_update_passive(tz, flag); + } + + /* Active (optional) */ + acpi_thermal_trips_update_active(tz, flag); + + if (flag & ACPI_TRIPS_DEVICES) { + acpi_thermal_trips_update_devices(tz, flag); + } + return 0; }