/* * INT3406 thermal driver for display participant device * * Copyright (C) 2016, Intel Corporation * Authors: Aaron Lu * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ #include #include #include #include #include #include #define INT3406_BRIGHTNESS_LIMITS_CHANGED 0x80 struct int3406_thermal_data { int upper_limit; int upper_limit_index; int lower_limit; int lower_limit_index; acpi_handle handle; struct acpi_video_device_brightness *br; struct backlight_device *raw_bd; struct thermal_cooling_device *cooling_dev; }; static int int3406_thermal_to_raw(int level, struct int3406_thermal_data *d) { int max_level = d->br->levels[d->br->count - 1]; int raw_max = d->raw_bd->props.max_brightness; return level * raw_max / max_level; } static int int3406_thermal_to_acpi(int level, struct int3406_thermal_data *d) { int raw_max = d->raw_bd->props.max_brightness; int max_level = d->br->levels[d->br->count - 1]; return level * max_level / raw_max; } static int int3406_thermal_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned long *state) { struct int3406_thermal_data *d = cooling_dev->devdata; int index = d->lower_limit_index ? d->lower_limit_index : 2; *state = d->br->count - 1 - index; return 0; } static int int3406_thermal_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long state) { struct int3406_thermal_data *d = cooling_dev->devdata; int level, raw_level; if (state > d->br->count - 3) return -EINVAL; state = d->br->count - 1 - state; level = d->br->levels[state]; if ((d->upper_limit && level > d->upper_limit) || (d->lower_limit && level < d->lower_limit)) return -EINVAL; raw_level = int3406_thermal_to_raw(level, d); return backlight_device_set_brightness(d->raw_bd, raw_level); } static int int3406_thermal_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long *state) { struct int3406_thermal_data *d = cooling_dev->devdata; int raw_level, level, i; int *levels = d->br->levels; raw_level = d->raw_bd->props.brightness; level = int3406_thermal_to_acpi(raw_level, d); /* * There is no 1:1 mapping between the firmware interface level with the * raw interface level, we will have to find one that is close enough. */ for (i = 2; i < d->br->count; i++) { if (level < levels[i]) { if (i == 2) break; if ((level - levels[i - 1]) < (levels[i] - level)) i--; break; } } *state = d->br->count - 1 - i; return 0; } static const struct thermal_cooling_device_ops video_cooling_ops = { .get_max_state = int3406_thermal_get_max_state, .get_cur_state = int3406_thermal_get_cur_state, .set_cur_state = int3406_thermal_set_cur_state, }; static int int3406_thermal_get_index(int *array, int nr, int value) { int i; for (i = 0; i < nr; i++) { if (array[i] == value) break; } return i == nr ? -ENOENT : i; } static void int3406_thermal_get_limit(struct int3406_thermal_data *d) { acpi_status status; unsigned long long lower_limit, upper_limit; int index; status = acpi_evaluate_integer(d->handle, "DDDL", NULL, &lower_limit); if (ACPI_SUCCESS(status)) { index = int3406_thermal_get_index(d->br->levels, d->br->count, lower_limit); if (index > 0) { d->lower_limit = (int)lower_limit; d->lower_limit_index = index; } } status = acpi_evaluate_integer(d->handle, "DDPC", NULL, &upper_limit); if (ACPI_SUCCESS(status)) { index = int3406_thermal_get_index(d->br->levels, d->br->count, upper_limit); if (index > 0) { d->upper_limit = (int)upper_limit; d->upper_limit_index = index; } } } static void int3406_notify(acpi_handle handle, u32 event, void *data) { if (event == INT3406_BRIGHTNESS_LIMITS_CHANGED) int3406_thermal_get_limit(data); } static int int3406_thermal_probe(struct platform_device *pdev) { struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); struct int3406_thermal_data *d; struct backlight_device *bd; int ret; if (!ACPI_HANDLE(&pdev->dev)) return -ENODEV; d = devm_kzalloc(&pdev->dev, sizeof(*d), GFP_KERNEL); if (!d) return -ENOMEM; d->handle = ACPI_HANDLE(&pdev->dev); bd = backlight_device_get_by_type(BACKLIGHT_RAW); if (!bd) return -ENODEV; d->raw_bd = bd; ret = acpi_video_get_levels(ACPI_COMPANION(&pdev->dev), &d->br, NULL); if (ret) return ret; int3406_thermal_get_limit(d); d->cooling_dev = thermal_cooling_device_register(acpi_device_bid(adev), d, &video_cooling_ops); if (IS_ERR(d->cooling_dev)) goto err; ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, int3406_notify, d); if (ret) goto err_cdev; platform_set_drvdata(pdev, d); return 0; err_cdev: thermal_cooling_device_unregister(d->cooling_dev); err: kfree(d->br); return -ENODEV; } static int int3406_thermal_remove(struct platform_device *pdev) { struct int3406_thermal_data *d = platform_get_drvdata(pdev); thermal_cooling_device_unregister(d->cooling_dev); kfree(d->br); return 0; } static const struct acpi_device_id int3406_thermal_match[] = { {"INT3406", 0}, {} }; MODULE_DEVICE_TABLE(acpi, int3406_thermal_match); static struct platform_driver int3406_thermal_driver = { .probe = int3406_thermal_probe, .remove = int3406_thermal_remove, .driver = { .name = "int3406 thermal", .acpi_match_table = int3406_thermal_match, }, }; module_platform_driver(int3406_thermal_driver); MODULE_DESCRIPTION("INT3406 Thermal driver"); MODULE_LICENSE("GPL v2"); perf/Documentation/perf-help.txt?id=11e3b725cfc282efe9d4a354153e99d86a16af08'>patch) tree8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6 /tools/perf/Documentation/perf-help.txt parentd6040764adcb5cb6de1489422411d701c158bb69 (diff)
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
Update the ARMv8 Crypto Extensions and the plain NEON AES implementations in CBC and CTR modes to return the next IV back to the skcipher API client. This is necessary for chaining to work correctly. Note that for CTR, this is only done if the request is a round multiple of the block size, since otherwise, chaining is impossible anyway. Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'tools/perf/Documentation/perf-help.txt')