diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-01 14:13:28 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-01 14:13:28 -0700 |
commit | 08be881064da126b8df4b96b0b3e2e307969a4a1 (patch) | |
tree | 0b51c465a0700ffc28d5083fa714285e5b894782 | |
parent | 0e285e90887bcb248178d55960e1276188c657c9 (diff) | |
parent | 52e70c8af7e5d04e3fe431066f0530a17a8147c2 (diff) |
Merge tag 'acpi-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These are some device enumeration code changes, updates of the AC and
battery drivers to help them avoid attaching to devices that cannot be
handled by them, new operation region driver for the Intel CHT Whiskey
Cove PMIC, new sysfs entries for CPPC performance capabilities, a new
_REV quirk blacklist entry and a couple of assorted minor fixes and
cleanups.
Specifics:
- Update the core device enumeration code to make it more internally
consistent and robust and drop the force_remove sysfs attribute
that could be used to tell it to ignore errors on device
hot-removal which was dangerous in general and no real and still
relevant use cases for it could be found (Rafael Wysocki, Michal
Hocko).
- Make the core device enumeration code use _PXM to associate
platform devices created by it with specific NUMA nodes (Shanker
Donthineni).
- Extend the CPPC library by adding more sysfs entries for
performance capabilities to it and making it use the lowest
nonlinear performance parameter (Prashanth Prakash).
- Make the CPU online more consistent with CPU initialization in the
ACPI processor driver (Prashanth Prakash).
- Update the AC and battery drivers to help them avoid attaching to
devices that cannot be handled by them and update the
axp288_charger power supply driver to work correctly on ACPI
systems without the INT3496 device (Hans de Goede).
- Add an ACPI operation region driver for the Intel CHT Whiskey Cove
PMIC and update the xpower operation region driver to work without
IIO which isn't really necessary for it to work (Hans de Goede).
- Add a new entry for Dell Inspiron 7537 to the _REV quirk blacklist
(Kai Heng Feng).
- Make the code in the ACPI video driver easier to follow by adding
symbols and comments to it (Dmitry Frank).
- Update ACPI documentation and drop a function that has no users
from the tables-handling code (Cao jin, Baoquan He)"
* tag 'acpi-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / PMIC: Stop xpower OPRegion handler relying on IIO
ACPI / PMIC: Add opregion driver for Intel CHT Whiskey Cove PMIC
ACPI / scan: Avoid enumerating devices more than once
ACPI / scan: Apply default enumeration to devices with ACPI drivers
power: supply: axp288_charger: Only wait for INT3496 device if present
ACPI / AC: Add a blacklist with PMIC ACPI HIDs with a native charger driver
ACPI / battery: Add a blacklist with PMIC ACPI HIDs with a native battery driver
ACPI / battery: Fix acpi_battery_exit on acpi_battery_init_async errors
ACPI / utils: Add new acpi_dev_present helper
ACPI / video: add comments about subtle cases
ACPI / video: get rid of magic numbers and use enum instead
ACPI / doc: linuxized-acpica.txt: fix typos
ACPI / blacklist: add _REV quirk for Dell Inspiron 7537
ACPI / tables: Drop acpi_parse_entries() which is not used
ACPI / CPPC: add sysfs entries for CPPC perf capabilities
ACPI / CPPC: Read lowest nonlinear perf in cppc_get_perf_caps()
ACPI / platform: Update platform device NUMA node based on _PXM method
ACPI / Processor: Drop setup_max_cpus check from acpi_processor_add()
ACPI / scan: Drop support for force_remove
-rw-r--r-- | Documentation/ABI/obsolete/sysfs-firmware-acpi | 8 | ||||
-rw-r--r-- | Documentation/ABI/testing/sysfs-firmware-acpi | 10 | ||||
-rw-r--r-- | Documentation/acpi/linuxized-acpica.txt | 10 | ||||
-rw-r--r-- | drivers/acpi/Kconfig | 8 | ||||
-rw-r--r-- | drivers/acpi/Makefile | 1 | ||||
-rw-r--r-- | drivers/acpi/ac.c | 20 | ||||
-rw-r--r-- | drivers/acpi/acpi_platform.c | 5 | ||||
-rw-r--r-- | drivers/acpi/acpi_processor.c | 5 | ||||
-rw-r--r-- | drivers/acpi/acpi_video.c | 157 | ||||
-rw-r--r-- | drivers/acpi/battery.c | 22 | ||||
-rw-r--r-- | drivers/acpi/blacklist.c | 8 | ||||
-rw-r--r-- | drivers/acpi/cppc_acpi.c | 80 | ||||
-rw-r--r-- | drivers/acpi/internal.h | 2 | ||||
-rw-r--r-- | drivers/acpi/pmic/intel_pmic_chtwc.c | 280 | ||||
-rw-r--r-- | drivers/acpi/pmic/intel_pmic_xpower.c | 21 | ||||
-rw-r--r-- | drivers/acpi/scan.c | 24 | ||||
-rw-r--r-- | drivers/acpi/sysfs.c | 9 | ||||
-rw-r--r-- | drivers/acpi/tables.c | 16 | ||||
-rw-r--r-- | drivers/acpi/utils.c | 66 | ||||
-rw-r--r-- | drivers/power/supply/axp288_charger.c | 28 | ||||
-rw-r--r-- | include/acpi/acpi_bus.h | 1 | ||||
-rw-r--r-- | include/acpi/cppc_acpi.h | 3 | ||||
-rw-r--r-- | include/linux/acpi.h | 9 |
23 files changed, 617 insertions, 176 deletions
diff --git a/Documentation/ABI/obsolete/sysfs-firmware-acpi b/Documentation/ABI/obsolete/sysfs-firmware-acpi new file mode 100644 index 000000000000..6715a71bec3d --- /dev/null +++ b/Documentation/ABI/obsolete/sysfs-firmware-acpi @@ -0,0 +1,8 @@ +What: /sys/firmware/acpi/hotplug/force_remove +Date: Mar 2017 +Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> +Description: + Since the force_remove is inherently broken and dangerous to + use for some hotplugable resources like memory (because ignoring + the offline failure might lead to memory corruption and crashes) + enabling this knob is not safe and thus unsupported. diff --git a/Documentation/ABI/testing/sysfs-firmware-acpi b/Documentation/ABI/testing/sysfs-firmware-acpi index c7fc72d4495c..613f42a9d5cd 100644 --- a/Documentation/ABI/testing/sysfs-firmware-acpi +++ b/Documentation/ABI/testing/sysfs-firmware-acpi @@ -44,16 +44,6 @@ Description: or 0 (unset). Attempts to write any other values to it will cause -EINVAL to be returned. -What: /sys/firmware/acpi/hotplug/force_remove -Date: May 2013 -Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com> -Description: - The number in this file (0 or 1) determines whether (1) or not - (0) the ACPI subsystem will allow devices to be hot-removed even - if they cannot be put offline gracefully (from the kernel's - viewpoint). That number can be changed by writing a boolean - value to this file. - What: /sys/firmware/acpi/interrupts/ Date: February 2008 Contact: Len Brown <lenb@kernel.org> diff --git a/Documentation/acpi/linuxized-acpica.txt b/Documentation/acpi/linuxized-acpica.txt index defe2eec5331..3ad7b0dfb083 100644 --- a/Documentation/acpi/linuxized-acpica.txt +++ b/Documentation/acpi/linuxized-acpica.txt @@ -24,7 +24,7 @@ upstream. The homepage of ACPICA project is: www.acpica.org, it is maintained and supported by Intel Corporation. - The following figure depicts the Linux ACPI subystem where the ACPICA + The following figure depicts the Linux ACPI subsystem where the ACPICA adaptation is included: +---------------------------------------------------------+ @@ -110,7 +110,7 @@ upstream. Linux patches. The patches generated by this process are referred to as "linuxized ACPICA patches". The release process is carried out on a local copy the ACPICA git repository. Each commit in the monthly release is - converted into a linuxized ACPICA patch. Together, they form the montly + converted into a linuxized ACPICA patch. Together, they form the monthly ACPICA release patchset for the Linux ACPI community. This process is illustrated in the following figure: @@ -165,7 +165,7 @@ upstream. <http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git>. Before the linuxized ACPICA patches are sent to the Linux ACPI community - for review, there is a quality ensurance build test process to reduce + for review, there is a quality assurance build test process to reduce porting issues. Currently this build process only takes care of the following kernel configuration options: CONFIG_ACPI/CONFIG_ACPI_DEBUG/CONFIG_ACPI_DEBUGGER @@ -195,12 +195,12 @@ upstream. release utilities (please refer to Section 4 below for the details). 3. Linux specific features - Sometimes it's impossible to use the current ACPICA APIs to implement features required by the Linux kernel, - so Linux developers occasionaly have to change ACPICA code directly. + so Linux developers occasionally have to change ACPICA code directly. Those changes may not be acceptable by ACPICA upstream and in such cases they are left as committed ACPICA divergences unless the ACPICA side can implement new mechanisms as replacements for them. 4. ACPICA release fixups - ACPICA only tests commits using a set of the - user space simulation utilies, thus the linuxized ACPICA patches may + user space simulation utilities, thus the linuxized ACPICA patches may break the Linux kernel, leaving us build/boot failures. In order to avoid breaking Linux bisection, fixes are applied directly to the linuxized ACPICA patches during the release process. When the release diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index c6db511b5f73..de3b8fce5164 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -505,7 +505,7 @@ config CRC_PMIC_OPREGION config XPOWER_PMIC_OPREGION bool "ACPI operation region support for XPower AXP288 PMIC" - depends on AXP288_ADC = y + depends on MFD_AXP20X_I2C help This config adds ACPI operation region support for XPower AXP288 PMIC. @@ -515,6 +515,12 @@ config BXT_WC_PMIC_OPREGION help This config adds ACPI operation region support for BXT WhiskeyCove PMIC. +config CHT_WC_PMIC_OPREGION + bool "ACPI operation region support for CHT Whiskey Cove PMIC" + depends on INTEL_SOC_PMIC_CHTWC + help + This config adds ACPI operation region support for CHT Whiskey Cove PMIC. + endif config ACPI_CONFIGFS diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index d94f92f88ca1..d78065cc9324 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -101,6 +101,7 @@ obj-$(CONFIG_PMIC_OPREGION) += pmic/intel_pmic.o obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.o obj-$(CONFIG_BXT_WC_PMIC_OPREGION) += pmic/intel_pmic_bxtwc.o +obj-$(CONFIG_CHT_WC_PMIC_OPREGION) += pmic/intel_pmic_chtwc.o obj-$(CONFIG_ACPI_CONFIGFS) += acpi_configfs.o diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index f71b756b05c4..8f52483219ba 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -57,12 +57,23 @@ static int acpi_ac_add(struct acpi_device *device); static int acpi_ac_remove(struct acpi_device *device); static void acpi_ac_notify(struct acpi_device *device, u32 event); +struct acpi_ac_bl { + const char *hid; + int hrv; +}; + static const struct acpi_device_id ac_device_ids[] = { {"ACPI0003", 0}, {"", 0}, }; MODULE_DEVICE_TABLE(acpi, ac_device_ids); +/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */ +static const struct acpi_ac_bl acpi_ac_blacklist[] = { + { "INT33F4", -1 }, /* X-Powers AXP288 PMIC */ + { "INT34D3", 3 }, /* Intel Cherrytrail Whiskey Cove PMIC */ +}; + #ifdef CONFIG_PM_SLEEP static int acpi_ac_resume(struct device *dev); #endif @@ -424,11 +435,20 @@ static int acpi_ac_remove(struct acpi_device *device) static int __init acpi_ac_init(void) { + unsigned int i; int result; if (acpi_disabled) return -ENODEV; + for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++) + if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1", + acpi_ac_blacklist[i].hrv)) { + pr_info(PREFIX "AC: found native %s PMIC, not loading\n", + acpi_ac_blacklist[i].hid); + return -ENODEV; + } + #ifdef CONFIG_ACPI_PROCFS_POWER acpi_ac_dir = acpi_lock_ac_dir(); if (!acpi_ac_dir) diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 03250e1f1103..88cd949003f3 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -121,11 +121,14 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev, if (IS_ERR(pdev)) dev_err(&adev->dev, "platform device creation failed: %ld\n", PTR_ERR(pdev)); - else + else { + set_dev_node(&pdev->dev, acpi_get_node(adev->handle)); dev_dbg(&adev->dev, "created platform device %s\n", dev_name(&pdev->dev)); + } kfree(resources); + return pdev; } EXPORT_SYMBOL_GPL(acpi_create_platform_device); diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 0143135b3abe..f098e25b6b41 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -388,11 +388,6 @@ static int acpi_processor_add(struct acpi_device *device, if (result) /* Processor is not physically present or unavailable */ return 0; -#ifdef CONFIG_SMP - if (pr->id >= setup_max_cpus && pr->id != 0) - return 0; -#endif - BUG_ON(pr->id >= nr_cpu_ids); /* diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index d00bc0ef87a6..e88fe3632dd6 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -73,6 +73,10 @@ module_param(report_key_events, int, 0644); MODULE_PARM_DESC(report_key_events, "0: none, 1: output changes, 2: brightness changes, 3: all"); +/* + * Whether the struct acpi_video_device_attrib::device_id_scheme bit should be + * assumed even if not actually set. + */ static bool device_id_scheme = false; module_param(device_id_scheme, bool, 0444); @@ -88,6 +92,18 @@ static int acpi_video_bus_remove(struct acpi_device *device); static void acpi_video_bus_notify(struct acpi_device *device, u32 event); void acpi_video_detect_exit(void); +/* + * Indices in the _BCL method response: the first two items are special, + * the rest are all supported levels. + * + * See page 575 of the ACPI spec 3.0 + */ +enum acpi_video_level_idx { + ACPI_VIDEO_AC_LEVEL, /* level when machine has full power */ + ACPI_VIDEO_BATTERY_LEVEL, /* level when machine is on batteries */ + ACPI_VIDEO_FIRST_LEVEL, /* actual supported levels begin here */ +}; + static const struct acpi_device_id video_device_ids[] = { {ACPI_VIDEO_HID, 0}, {"", 0}, @@ -132,7 +148,15 @@ struct acpi_video_device_attrib { the VGA device. */ u32 pipe_id:3; /* For VGA multiple-head devices. */ u32 reserved:10; /* Must be 0 */ - u32 device_id_scheme:1; /* Device ID Scheme */ + + /* + * The device ID might not actually follow the scheme described by this + * struct acpi_video_device_attrib. If it does, then this bit + * device_id_scheme is set; otherwise, other fields should be ignored. + * + * (but also see the global flag device_id_scheme) + */ + u32 device_id_scheme:1; }; struct acpi_video_enumerated_device { @@ -217,20 +241,16 @@ static int acpi_video_get_brightness(struct backlight_device *bd) if (acpi_video_device_lcd_get_level_current(vd, &cur_level, false)) return -EINVAL; - for (i = 2; i < vd->brightness->count; i++) { + for (i = ACPI_VIDEO_FIRST_LEVEL; i < vd->brightness->count; i++) { if (vd->brightness->levels[i] == cur_level) - /* - * The first two entries are special - see page 575 - * of the ACPI spec 3.0 - */ - return i - 2; + return i - ACPI_VIDEO_FIRST_LEVEL; } return 0; } static int acpi_video_set_brightness(struct backlight_device *bd) { - int request_level = bd->props.brightness + 2; + int request_level = bd->props.brightness + ACPI_VIDEO_FIRST_LEVEL; struct acpi_video_device *vd = bl_get_data(bd); cancel_delayed_work(&vd->switch_brightness_work); @@ -244,18 +264,18 @@ static const struct backlight_ops acpi_backlight_ops = { }; /* thermal cooling device callbacks */ -static int video_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned - long *state) +static int video_get_max_state(struct thermal_cooling_device *cooling_dev, + unsigned long *state) { struct acpi_device *device = cooling_dev->devdata; struct acpi_video_device *video = acpi_driver_data(device); - *state = video->brightness->count - 3; + *state = video->brightness->count - ACPI_VIDEO_FIRST_LEVEL - 1; return 0; } -static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned - long *state) +static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, + unsigned long *state) { struct acpi_device *device = cooling_dev->devdata; struct acpi_video_device *video = acpi_driver_data(device); @@ -264,7 +284,8 @@ static int video_get_cur_state(struct thermal_cooling_device *cooling_dev, unsig if (acpi_video_device_lcd_get_level_current(video, &level, false)) return -EINVAL; - for (offset = 2; offset < video->brightness->count; offset++) + for (offset = ACPI_VIDEO_FIRST_LEVEL; offset < video->brightness->count; + offset++) if (level == video->brightness->levels[offset]) { *state = video->brightness->count - offset - 1; return 0; @@ -280,7 +301,7 @@ video_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long st struct acpi_video_device *video = acpi_driver_data(device); int level; - if (state >= video->brightness->count - 2) + if (state >= video->brightness->count - ACPI_VIDEO_FIRST_LEVEL) return -EINVAL; state = video->brightness->count - state; @@ -345,10 +366,12 @@ acpi_video_device_lcd_set_level(struct acpi_video_device *device, int level) } device->brightness->curr = level; - for (state = 2; state < device->brightness->count; state++) + for (state = ACPI_VIDEO_FIRST_LEVEL; state < device->brightness->count; + state++) if (level == device->brightness->levels[state]) { if (device->backlight) - device->backlight->props.brightness = state - 2; + device->backlight->props.brightness = + state - ACPI_VIDEO_FIRST_LEVEL; return 0; } @@ -530,14 +553,16 @@ acpi_video_bqc_value_to_level(struct acpi_video_device *device, if (device->brightness->flags._BQC_use_index) { /* - * _BQC returns an index that doesn't account for - * the first 2 items with special meaning, so we need - * to compensate for that by offsetting ourselves + * _BQC returns an index that doesn't account for the first 2 + * items with special meaning (see enum acpi_video_level_idx), + * so we need to compensate for that by offsetting ourselves */ if (device->brightness->flags._BCL_reversed) - bqc_value = device->brightness->count - 3 - bqc_value; + bqc_value = device->brightness->count - + ACPI_VIDEO_FIRST_LEVEL - 1 - bqc_value; - level = device->brightness->levels[bqc_value + 2]; + level = device->brightness->levels[bqc_value + + ACPI_VIDEO_FIRST_LEVEL]; } else { level = bqc_value; } @@ -571,7 +596,8 @@ acpi_video_device_lcd_get_level_current(struct acpi_video_device *device, *level = acpi_video_bqc_value_to_level(device, *level); - for (i = 2; i < device->brightness->count; i++) + for (i = ACPI_VIDEO_FIRST_LEVEL; + i < device->brightness->count; i++) if (device->brightness->levels[i] == *level) { device->brightness->curr = *level; return 0; @@ -714,9 +740,37 @@ static int acpi_video_bqc_quirk(struct acpi_video_device *device, /* * Some systems always report current brightness level as maximum - * through _BQC, we need to test another value for them. + * through _BQC, we need to test another value for them. However, + * there is a subtlety: + * + * If the _BCL package ordering is descending, the first level + * (br->levels[2]) is likely to be 0, and if the number of levels + * matches the number of steps, we might confuse a returned level to + * mean the index. + * + * For example: + * + * current_level = max_level = 100 + * test_level = 0 + * returned level = 100 + * + * In this case 100 means the level, not the index, and _BCM failed. + * Still, if the _BCL package ordering is descending, the index of + * level 0 is also 100, so we assume _BQC is indexed, when it's not. + * + * This causes all _BQC calls to return bogus values causing weird + * behavior from the user's perspective. For example: + * + * xbacklight -set 10; xbacklight -set 20; + * + * would flash to 90% and then slowly down to the desired level (20). + * + * The solution is simple; test anything other than the first level + * (e.g. 1). */ - test_level = current_level == max_level ? br->levels[3] : max_level; + test_level = current_level == max_level + ? br->levels[ACPI_VIDEO_FIRST_LEVEL + 1] + : max_level; result = acpi_video_device_lcd_set_level(device, test_level); if (result) @@ -730,8 +784,8 @@ static int acpi_video_bqc_quirk(struct acpi_video_device *device, /* buggy _BQC found, need to find out if it uses index */ if (level < br->count) { if (br->flags._BCL_reversed) - level = br->count - 3 - level; - if (br->levels[level + 2] == test_level) + level = br->count - ACPI_VIDEO_FIRST_LEVEL - 1 - level; + if (br->levels[level + ACPI_VIDEO_FIRST_LEVEL] == test_level) br->flags._BQC_use_index = 1; } @@ -761,7 +815,7 @@ int acpi_video_get_levels(struct acpi_device *device, goto out; } - if (obj->package.count < 2) { + if (obj->package.count < ACPI_VIDEO_FIRST_LEVEL) { result = -EINVAL; goto out; } @@ -773,8 +827,13 @@ int acpi_video_get_levels(struct acpi_device *device, goto out; } - br->levels = kmalloc((obj->package.count + 2) * sizeof *(br->levels), - GFP_KERNEL); + /* + * Note that we have to reserve 2 extra items (ACPI_VIDEO_FIRST_LEVEL), + * in order to account for buggy BIOS which don't export the first two + * special levels (see below) + */ + br->levels = kmalloc((obj->package.count + ACPI_VIDEO_FIRST_LEVEL) * + sizeof(*br->levels), GFP_KERNEL); if (!br->levels) { result = -ENOMEM; goto out_free; @@ -788,7 +847,8 @@ int acpi_video_get_levels(struct acpi_device *device, } value = (u32) o->integer.value; /* Skip duplicate entries */ - if (count > 2 && br->levels[count - 1] == value) + if (count > ACPI_VIDEO_FIRST_LEVEL + && br->levels[count - 1] == value) continue; br->levels[count] = value; @@ -804,27 +864,30 @@ int acpi_video_get_levels(struct acpi_device *device, * In this case, the first two elements in _BCL packages * are also supported brightness levels that OS should take care of. */ - for (i = 2; i < count; i++) { - if (br->levels[i] == br->levels[0]) + for (i = ACPI_VIDEO_FIRST_LEVEL; i < count; i++) { + if (br->levels[i] == br->levels[ACPI_VIDEO_AC_LEVEL]) level_ac_battery++; - if (br->levels[i] == br->levels[1]) + if (br->levels[i] == br->levels[ACPI_VIDEO_BATTERY_LEVEL]) level_ac_battery++; } - if (level_ac_battery < 2) { - level_ac_battery = 2 - level_ac_battery; + if (level_ac_battery < ACPI_VIDEO_FIRST_LEVEL) { + level_ac_battery = ACPI_VIDEO_FIRST_LEVEL - level_ac_battery; br->flags._BCL_no_ac_battery_levels = 1; - for (i = (count - 1 + level_ac_battery); i >= 2; i--) + for (i = (count - 1 + level_ac_battery); + i >= ACPI_VIDEO_FIRST_LEVEL; i--) br->levels[i] = br->levels[i - level_ac_battery]; count += level_ac_battery; - } else if (level_ac_battery > 2) + } else if (level_ac_battery > ACPI_VIDEO_FIRST_LEVEL) ACPI_ERROR((AE_INFO, "Too many duplicates in _BCL package")); /* Check if the _BCL package is in a reversed order */ - if (max_level == br->levels[2]) { + if (max_level == br->levels[ACPI_VIDEO_FIRST_LEVEL]) { br->flags._BCL_reversed = 1; - sort(&br->levels[2], count - 2, sizeof(br->levels[2]), - acpi_video_cmp_level, NULL); + sort(&br->levels[ACPI_VIDEO_FIRST_LEVEL], + count - ACPI_VIDEO_FIRST_LEVEL, + sizeof(br->levels[ACPI_VIDEO_FIRST_LEVEL]), + acpi_video_cmp_level, NULL); } else if (max_level != br->levels[count - 1]) ACPI_ERROR((AE_INFO, "Found unordered _BCL package")); @@ -894,7 +957,7 @@ acpi_video_init_brightness(struct acpi_video_device *device) * level_old is invalid (no matter whether it's a level * or an index). Set the backlight to max_level in this case. */ - for (i = 2; i < br->count; i++) + for (i = ACPI_VIDEO_FIRST_LEVEL; i < br->count; i++) if (level == br->levels[i]) break; if (i == br->count || !level) @@ -906,7 +969,8 @@ set_level: goto out_free_levels; ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "found %d brightness levels\n", br->count - 2)); + "found %d brightness levels\n", + br->count - ACPI_VIDEO_FIRST_LEVEL)); return 0; out_free_levels: @@ -1297,7 +1361,7 @@ acpi_video_get_next_level(struct acpi_video_device *device, max = max_below = 0; min = min_above = 255; /* Find closest level to level_current */ - for (i = 2; i < device->brightness->count; i++) { + for (i = ACPI_VIDEO_FIRST_LEVEL; i < device->brightness->count; i++) { l = device->brightness->levels[i]; if (abs(l - level_current) < abs(delta)) { delta = l - level_current; @@ -1307,7 +1371,7 @@ acpi_video_get_next_level(struct acpi_video_device *device, } /* Ajust level_current to closest available level */ level_current += delta; - for (i = 2; i < device->brightness->count; i++) { + for (i = ACPI_VIDEO_FIRST_LEVEL; i < device->brightness->count; i++) { l = device->brightness->levels[i]; if (l < min) min = l; @@ -1680,7 +1744,8 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device) memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_FIRMWARE; - props.max_brightness = device->brightness->count - 3; + props.max_brightness = + device->brightness->count - ACPI_VIDEO_FIRST_LEVEL - 1; device->backlight = backlight_device_register(name, parent, device, diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 4ef1e4624b2b..d42eeef9d928 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -67,6 +67,7 @@ MODULE_DESCRIPTION("ACPI Battery Driver"); MODULE_LICENSE("GPL"); static async_cookie_t async_cookie; +static bool battery_driver_registered; static int battery_bix_broken_package; static int battery_notification_delay_ms; static unsigned int cache_time = 1000; @@ -93,6 +94,11 @@ static const struct acpi_device_id battery_device_ids[] = { MODULE_DEVICE_TABLE(acpi, battery_device_ids); +/* Lists of PMIC ACPI HIDs with an (often better) native battery driver */ +static const char * const acpi_battery_blacklist[] = { + "INT33F4", /* X-Powers AXP288 PMIC */ +}; + enum { ACPI_BATTERY_ALARM_PRESENT, ACPI_BATTERY_XINFO_PRESENT, @@ -1315,8 +1321,17 @@ static struct acpi_driver acpi_battery_driver = { static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie) { + unsigned int i; int result; + for (i = 0; i < ARRAY_SIZE(acpi_battery_blacklist); i++) + if (acpi_dev_present(acpi_battery_blacklist[i], "1", -1)) { + pr_info(PREFIX ACPI_BATTERY_DEVICE_NAME + ": found native %s PMIC, not loading\n", + acpi_battery_blacklist[i]); + return; + } + dmi_check_system(bat_dmi_table); #ifdef CONFIG_ACPI_PROCFS_POWER @@ -1329,6 +1344,7 @@ static void __init acpi_battery_init_async(void *unused, async_cookie_t cookie) if (result < 0) acpi_unlock_battery_dir(acpi_battery_dir); #endif + battery_driver_registered = (result == 0); } static int __init acpi_battery_init(void) @@ -1343,9 +1359,11 @@ static int __init acpi_battery_init(void) static void __exit acpi_battery_exit(void) { async_synchronize_cookie(async_cookie + 1); - acpi_bus_unregister_driver(&acpi_battery_driver); + if (battery_driver_registered) + acpi_bus_unregister_driver(&acpi_battery_driver); #ifdef CONFIG_ACPI_PROCFS_POWER - acpi_unlock_battery_dir(acpi_battery_dir); + if (acpi_battery_dir) + acpi_unlock_battery_dir(acpi_battery_dir); #endif } diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 4421f7c9981c..bb542acc0574 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -188,6 +188,14 @@ static struct dmi_system_id acpi_rev_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"), }, }, + { + .callback = dmi_enable_rev_override, + .ident = "DELL Inspiron 7537", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7537"), + }, + }, #endif {} }; diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 3ca0729f7e0e..6cbe6036da99 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -132,49 +132,54 @@ __ATTR(_name, 0444, show_##_name, NULL) #define to_cpc_desc(a) container_of(a, struct cpc_desc, kobj) +#define show_cppc_data(access_fn, struct_name, member_name) \ + static ssize_t show_##member_name(struct kobject *kobj, \ + struct attribute *attr, char *buf) \ + { \ + struct cpc_desc *cpc_ptr = to_cpc_desc(kobj); \ + struct struct_name st_name = {0}; \ + int ret; \ + \ + ret = access_fn(cpc_ptr->cpu_id, &st_name); \ + if (ret) \ + return ret; \ + \ + return scnprintf(buf, PAGE_SIZE, "%llu\n", \ + (u64)st_name.member_name); \ + } \ + define_one_cppc_ro(member_name) + +show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, highest_perf); +show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_perf); +show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, nominal_perf); +show_cppc_data(cppc_get_perf_caps, cppc_perf_caps, lowest_nonlinear_perf); +show_cppc_data(cppc_get_perf_ctrs, cppc_perf_fb_ctrs, reference_perf); +show_cppc_data(cppc_get_perf_ctrs, cppc_perf_fb_ctrs, wraparound_time); + static ssize_t show_feedback_ctrs(struct kobject *kobj, struct attribute *attr, char *buf) { struct cpc_desc *cpc_ptr = to_cpc_desc(kobj); struct cppc_perf_fb_ctrs fb_ctrs = {0}; + int ret; - cppc_get_perf_ctrs(cpc_ptr->cpu_id, &fb_ctrs); + ret = cppc_get_perf_ctrs(cpc_ptr->cpu_id, &fb_ctrs); + if (ret) + return ret; return scnprintf(buf, PAGE_SIZE, "ref:%llu del:%llu\n", fb_ctrs.reference, fb_ctrs.delivered); } define_one_cppc_ro(feedback_ctrs); -static ssize_t show_reference_perf(struct kobject *kobj, - struct attribute *attr, char *buf) -{ - struct cpc_desc *cpc_ptr = to_cpc_desc(kobj); - struct cppc_perf_fb_ctrs fb_ctrs = {0}; - - cppc_get_perf_ctrs(cpc_ptr->cpu_id, &fb_ctrs); - - return scnprintf(buf, PAGE_SIZE, "%llu\n", - fb_ctrs.reference_perf); -} -define_one_cppc_ro(reference_perf); - -static ssize_t show_wraparound_time(struct kobject *kobj, - struct attribute *attr, char *buf) -{ - struct cpc_desc *cpc_ptr = to_cpc_desc(kobj); - struct cppc_perf_fb_ctrs fb_ctrs = {0}; - - cppc_get_perf_ctrs(cpc_ptr->cpu_id, &fb_ctrs); - - return scnprintf(buf, PAGE_SIZE, "%llu\n", fb_ctrs.ctr_wrap_time); - -} -define_one_cppc_ro(wraparound_time); - static struct attribute *cppc_attrs[] = { &feedback_ctrs.attr, &reference_perf.attr, &wraparound_time.attr, + &highest_perf.attr, + &lowest_perf.attr, + &lowest_nonlinear_perf.attr, + &nominal_perf.attr, NULL }; @@ -972,9 +977,9 @@ static int cpc_write(int cpu, struct cpc_register_resource *reg_res, u64 val) int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps) { struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpunum); - struct cpc_register_resource *highest_reg, *lowest_reg, *ref_perf, - *nom_perf; - u64 high, low, nom; + struct cpc_register_resource *highest_reg, *lowest_reg, + *lowest_non_linear_reg, *nominal_reg; + u64 high, low, nom, min_nonlinear; int ret = 0, regs_in_pcc = 0; if (!cpc_desc) { @@ -984,12 +989,12 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps) highest_reg = &cpc_desc->cpc_regs[HIGHEST_PERF]; lowest_reg = &cpc_desc->cpc_regs[LOWEST_PERF]; - ref_perf = &cpc_desc->cpc_regs[REFERENCE_PERF]; - nom_perf = &cpc_desc->cpc_regs[NOMINAL_PERF]; + lowest_non_linear_reg = &cpc_desc->cpc_regs[LOW_NON_LINEAR_PERF]; + nominal_reg = &cpc_desc->cpc_regs[NOMINAL_PERF]; /* Are any of the regs PCC ?*/ if (CPC_IN_PCC(highest_reg) || CPC_IN_PCC(lowest_reg) || - CPC_IN_PCC(ref_perf) || CPC_IN_PCC(nom_perf)) { + CPC_IN_PCC(lowest_non_linear_reg) || CPC_IN_PCC(nominal_reg)) { regs_in_pcc = 1; down_write(&pcc_data.pcc_lock); /* Ring doorbell once to update PCC subspace */ @@ -1005,10 +1010,13 @@ int cppc_get_perf_caps(int cpunum, struct cppc_perf_caps *perf_caps) cpc_read(cpunum, lowest_reg, &low); perf_caps->lowest_perf = low; - cpc_read(cpunum, nom_perf, &nom); + cpc_read(cpunum, nominal_reg, &nom); perf_caps->nominal_perf = nom; - if (!high || !low || !nom) + cpc_read(cpunum, lowest_non_linear_reg, &min_nonlinear); + perf_caps->lowest_nonlinear_perf = min_nonlinear; + + if (!high || !low || !nom || !min_nonlinear) |