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-rw-r--r--drivers/acpi/Kconfig15
-rw-r--r--drivers/acpi/Makefile1
-rw-r--r--drivers/acpi/ac.c20
-rw-r--r--drivers/acpi/acpi_extlog.c8
-rw-r--r--drivers/acpi/acpi_ipmi.c3
-rw-r--r--drivers/acpi/acpi_platform.c5
-rw-r--r--drivers/acpi/acpi_processor.c5
-rw-r--r--drivers/acpi/acpi_video.c157
-rw-r--r--drivers/acpi/acpica/utresrc.c17
-rw-r--r--drivers/acpi/arm64/Kconfig3
-rw-r--r--drivers/acpi/arm64/Makefile1
-rw-r--r--drivers/acpi/arm64/gtdt.c417
-rw-r--r--drivers/acpi/battery.c22
-rw-r--r--drivers/acpi/bgrt.c6
-rw-r--r--drivers/acpi/blacklist.c8
-rw-r--r--drivers/acpi/cppc_acpi.c80
-rw-r--r--drivers/acpi/internal.h2
-rw-r--r--drivers/acpi/nfit/core.c6
-rw-r--r--drivers/acpi/pmic/intel_pmic_chtwc.c280
-rw-r--r--drivers/acpi/pmic/intel_pmic_xpower.c21
-rw-r--r--drivers/acpi/power.c1
-rw-r--r--drivers/acpi/property.c259
-rw-r--r--drivers/acpi/scan.c37
-rw-r--r--drivers/acpi/sysfs.c9
-rw-r--r--drivers/acpi/tables.c16
-rw-r--r--drivers/acpi/utils.c66
26 files changed, 1262 insertions, 203 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 83e5f7e1a20d..18f3036fcb82 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -256,7 +256,7 @@ config ACPI_PROCESSOR
config ACPI_IPMI
tristate "IPMI"
- depends on IPMI_SI
+ depends on IPMI_HANDLER
default n
help
This driver enables the ACPI to access the BMC controller. And it
@@ -440,7 +440,7 @@ config ACPI_CUSTOM_METHOD
config ACPI_BGRT
bool "Boottime Graphics Resource Table support"
- depends on EFI && X86
+ depends on EFI && (X86 || ARM64)
help
This driver adds support for exposing the ACPI Boottime Graphics
Resource Table, which allows the operating system to obtain
@@ -469,9 +469,8 @@ config ACPI_WATCHDOG
config ACPI_EXTLOG
tristate "Extended Error Log support"
- depends on X86_MCE && X86_LOCAL_APIC
+ depends on X86_MCE && X86_LOCAL_APIC && EDAC
select UEFI_CPER
- select RAS
default n
help
Certain usages such as Predictive Failure Analysis (PFA) require
@@ -506,7 +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.
@@ -516,6 +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_extlog.c b/drivers/acpi/acpi_extlog.c
index a15270a806fc..502ea4dc2080 100644
--- a/drivers/acpi/acpi_extlog.c
+++ b/drivers/acpi/acpi_extlog.c
@@ -229,7 +229,7 @@ static int __init extlog_init(void)
if (!(cap & MCG_ELOG_P) || !extlog_get_l1addr())
return -ENODEV;
- if (get_edac_report_status() == EDAC_REPORTING_FORCE) {
+ if (edac_get_report_status() == EDAC_REPORTING_FORCE) {
pr_warn("Not loading eMCA, error reporting force-enabled through EDAC.\n");
return -EPERM;
}
@@ -285,8 +285,8 @@ static int __init extlog_init(void)
* eMCA event report method has higher priority than EDAC method,
* unless EDAC event report method is mandatory.
*/
- old_edac_report_status = get_edac_report_status();
- set_edac_report_status(EDAC_REPORTING_DISABLED);
+ old_edac_report_status = edac_get_report_status();
+ edac_set_report_status(EDAC_REPORTING_DISABLED);
mce_register_decode_chain(&extlog_mce_dec);
/* enable OS to be involved to take over management from BIOS */
((struct extlog_l1_head *)extlog_l1_addr)->flags |= FLAG_OS_OPTIN;
@@ -308,7 +308,7 @@ err:
static void __exit extlog_exit(void)
{
- set_edac_report_status(old_edac_report_status);
+ edac_set_report_status(old_edac_report_status);
mce_unregister_decode_chain(&extlog_mce_dec);
((struct extlog_l1_head *)extlog_l1_addr)->flags &= ~FLAG_OS_OPTIN;
if (extlog_l1_addr)
diff --git a/drivers/acpi/acpi_ipmi.c b/drivers/acpi/acpi_ipmi.c
index 747c2ba98534..1b64419e2fec 100644
--- a/drivers/acpi/acpi_ipmi.c
+++ b/drivers/acpi/acpi_ipmi.c
@@ -429,8 +429,7 @@ static void ipmi_msg_handler(struct ipmi_recv_msg *msg, void *user_msg_data)
if (msg->recv_type == IPMI_RESPONSE_RECV_TYPE &&
msg->msg.data_len == 1) {
if (msg->msg.data[0] == IPMI_TIMEOUT_COMPLETION_CODE) {
- dev_WARN_ONCE(dev, true,
- "Unexpected response (timeout).\n");
+ dev_dbg_once(dev, "Unexpected response (timeout).\n");
tx_msg->msg_done = ACPI_IPMI_TIMEOUT;
}
goto out_comp;
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/acpica/utresrc.c b/drivers/acpi/acpica/utresrc.c
index c86bae7b1d0f..ff096d9755b9 100644
--- a/drivers/acpi/acpica/utresrc.c
+++ b/drivers/acpi/acpica/utresrc.c
@@ -421,10 +421,8 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
ACPI_FUNCTION_TRACE(ut_walk_aml_resources);
- /*
- * The absolute minimum resource template is one end_tag descriptor.
- * However, we will treat a lone end_tag as just a simple buffer.
- */
+ /* The absolute minimum resource template is one end_tag descriptor */
+
if (aml_length < sizeof(struct aml_resource_end_tag)) {
return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
}
@@ -456,8 +454,9 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
/* Invoke the user function */
if (user_function) {
- status = user_function(aml, length, offset,
- resource_index, context);
+ status =
+ user_function(aml, length, offset, resource_index,
+ context);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
@@ -481,12 +480,6 @@ acpi_ut_walk_aml_resources(struct acpi_walk_state *walk_state,
*context = aml;
}
- /* Check if buffer is defined to be longer than the resource length */
-
- if (aml_length > (offset + length)) {
- return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
- }
-
/* Normal exit */
return_ACPI_STATUS(AE_OK);
diff --git a/drivers/acpi/arm64/Kconfig b/drivers/acpi/arm64/Kconfig
index 4616da4c15be..5a6f80fce0d6 100644
--- a/drivers/acpi/arm64/Kconfig
+++ b/drivers/acpi/arm64/Kconfig
@@ -4,3 +4,6 @@
config ACPI_IORT
bool
+
+config ACPI_GTDT
+ bool
diff --git a/drivers/acpi/arm64/Makefile b/drivers/acpi/arm64/Makefile
index 72331f2ce0e9..1017def2ea12 100644
--- a/drivers/acpi/arm64/Makefile
+++ b/drivers/acpi/arm64/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_ACPI_IORT) += iort.o
+obj-$(CONFIG_ACPI_GTDT) += gtdt.o
diff --git a/drivers/acpi/arm64/gtdt.c b/drivers/acpi/arm64/gtdt.c
new file mode 100644
index 000000000000..597a737d538f
--- /dev/null
+++ b/drivers/acpi/arm64/gtdt.c
@@ -0,0 +1,417 @@
+/*
+ * ARM Specific GTDT table Support
+ *
+ * Copyright (C) 2016, Linaro Ltd.
+ * Author: Daniel Lezcano <daniel.lezcano@linaro.org>
+ * Fu Wei <fu.wei@linaro.org>
+ * Hanjun Guo <hanjun.guo@linaro.org>
+ *
+ * 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 <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/irqdomain.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <clocksource/arm_arch_timer.h>
+
+#undef pr_fmt
+#define pr_fmt(fmt) "ACPI GTDT: " fmt
+
+/**
+ * struct acpi_gtdt_descriptor - Store the key info of GTDT for all functions
+ * @gtdt: The pointer to the struct acpi_table_gtdt of GTDT table.
+ * @gtdt_end: The pointer to the end of GTDT table.
+ * @platform_timer: The pointer to the start of Platform Timer Structure
+ *
+ * The struct store the key info of GTDT table, it should be initialized by
+ * acpi_gtdt_init.
+ */
+struct acpi_gtdt_descriptor {
+ struct acpi_table_gtdt *gtdt;
+ void *gtdt_end;
+ void *platform_timer;
+};
+
+static struct acpi_gtdt_descriptor acpi_gtdt_desc __initdata;
+
+static inline void *next_platform_timer(void *platform_timer)
+{
+ struct acpi_gtdt_header *gh = platform_timer;
+
+ platform_timer += gh->length;
+ if (platform_timer < acpi_gtdt_desc.gtdt_end)
+ return platform_timer;
+
+ return NULL;
+}
+
+#define for_each_platform_timer(_g) \
+ for (_g = acpi_gtdt_desc.platform_timer; _g; \
+ _g = next_platform_timer(_g))
+
+static inline bool is_timer_block(void *platform_timer)
+{
+ struct acpi_gtdt_header *gh = platform_timer;
+
+ return gh->type == ACPI_GTDT_TYPE_TIMER_BLOCK;
+}
+
+static inline bool is_non_secure_watchdog(void *platform_timer)
+{
+ struct acpi_gtdt_header *gh = platform_timer;
+ struct acpi_gtdt_watchdog *wd = platform_timer;
+
+ if (gh->type != ACPI_GTDT_TYPE_WATCHDOG)
+ return false;
+
+ return !(wd->timer_flags & ACPI_GTDT_WATCHDOG_SECURE);
+}
+
+static int __init map_gt_gsi(u32 interrupt, u32 flags)
+{
+ int trigger, polarity;
+
+ trigger = (flags & ACPI_GTDT_INTERRUPT_MODE) ? ACPI_EDGE_SENSITIVE
+ : ACPI_LEVEL_SENSITIVE;
+
+ polarity = (flags & ACPI_GTDT_INTERRUPT_POLARITY) ? ACPI_ACTIVE_LOW
+ : ACPI_ACTIVE_HIGH;
+
+ return acpi_register_gsi(NULL, interrupt, trigger, polarity);
+}
+
+/**
+ * acpi_gtdt_map_ppi() - Map the PPIs of per-cpu arch_timer.
+ * @type: the type of PPI.
+ *
+ * Note: Secure state is not managed by the kernel on ARM64 systems.
+ * So we only handle the non-secure timer PPIs,
+ * ARCH_TIMER_PHYS_SECURE_PPI is treated as invalid type.
+ *
+ * Return: the mapped PPI value, 0 if error.
+ */
+int __init acpi_gtdt_map_ppi(int type)
+{
+ struct acpi_table_gtdt *gtdt = acpi_gtdt_desc.gtdt;
+
+ switch (type) {
+ case ARCH_TIMER_PHYS_NONSECURE_PPI:
+ return map_gt_gsi(gtdt->non_secure_el1_interrupt,
+ gtdt->non_secure_el1_flags);
+ case ARCH_TIMER_VIRT_PPI:
+ return map_gt_gsi(gtdt->virtual_timer_interrupt,
+ gtdt->virtual_timer_flags);
+
+ case ARCH_TIMER_HYP_PPI:
+ return map_gt_gsi(gtdt->non_secure_el2_interrupt,
+ gtdt->non_secure_el2_flags);
+ default:
+ pr_err("Failed to map timer interrupt: invalid type.\n");
+ }
+
+ return 0;
+}
+
+/**
+ * acpi_gtdt_c3stop() - Got c3stop info from GTDT according to the type of PPI.
+ * @type: the type of PPI.
+ *
+ * Return: true if the timer HW state is lost when a CPU enters an idle state,
+ * false otherwise
+ */
+bool __init acpi_gtdt_c3stop(int type)
+{
+ struct acpi_table_gtdt *gtdt = acpi_gtdt_desc.gtdt;
+
+ switch (type) {
+ case ARCH_TIMER_PHYS_NONSECURE_PPI:
+ return !(gtdt->non_secure_el1_flags & ACPI_GTDT_ALWAYS_ON);
+
+ case ARCH_TIMER_VIRT_PPI:
+ return !(gtdt->virtual_timer_flags & ACPI_GTDT_ALWAYS_ON);
+
+ case ARCH_TIMER_HYP_PPI:
+ return !(gtdt->non_secure_el2_flags & ACPI_GTDT_ALWAYS_ON);
+
+ default:
+ pr_err("Failed to get c3stop info: invalid type.\n");
+ }
+
+ return false;
+}
+
+/**
+ * acpi_gtdt_init() - Get the info of GTDT table to prepare for further init.
+ * @table: The pointer to GTDT table.
+ * @platform_timer_count: It points to a integer variable which is used
+ * for storing the number of platform timers.
+ * This pointer could be NULL, if the caller
+ * doesn't need this info.
+ *
+ * Return: 0 if success, -EINVAL if error.
+ */
+int __init acpi_gtdt_init(struct acpi_table_header *table,
+ int *platform_timer_count)
+{
+ void *platform_timer;
+ struct acpi_table_gtdt *gtdt;
+
+ gtdt = container_of(table, struct acpi_table_gtdt, header);
+ acpi_gtdt_desc.gtdt = gtdt;
+ acpi_gtdt_desc.gtdt_end = (void *)table + table->length;
+ acpi_gtdt_desc.platform_timer = NULL;
+ if (platform_timer_count)
+ *platform_timer_count = 0;
+
+ if (table->revision < 2) {
+ pr_warn("Revision:%d doesn't support Platform Timers.\n",
+ table->revision);
+ return 0;
+ }
+
+ if (!gtdt->platform_timer_count) {
+ pr_debug("No Platform Timer.\n");
+ return 0;
+ }
+
+ platform_timer = (void *)gtdt + gtdt->platform_timer_offset;
+ if (platform_timer < (void *)table + sizeof(struct acpi_table_gtdt)) {
+ pr_err(FW_BUG "invalid timer data.\n");
+ return -EINVAL;
+ }
+ acpi_gtdt_desc.platform_timer = platform_timer;
+ if (platform_timer_count)
+ *platform_timer_count = gtdt->platform_timer_count;
+
+ return 0;
+}
+
+static int __init gtdt_parse_timer_block(struct acpi_gtdt_timer_block *block,
+ struct arch_timer_mem *timer_mem)
+{
+ int i;
+ struct arch_timer_mem_frame *frame;
+ struct acpi_gtdt_timer_entry *gtdt_frame;
+
+ if (!block->timer_count) {
+ pr_err(FW_BUG "GT block present, but frame count is zero.");
+ return -ENODEV;
+ }
+
+ if (block->timer_count > ARCH_TIMER_MEM_MAX_FRAMES) {
+ pr_err(FW_BUG "GT block lists %d frames, ACPI spec only allows 8\n",
+ block->timer_count);
+ return -EINVAL;
+ }
+
+ timer_mem->cntctlbase = (phys_addr_t)block->block_address;
+ /*
+ * The CNTCTLBase frame is 4KB (register offsets 0x000 - 0xFFC).
+ * See ARM DDI 0487A.k_iss10775, page I1-5129, Table I1-3
+ * "CNTCTLBase memory map".
+ */
+ timer_mem->size = SZ_4K;
+
+ gtdt_frame = (void *)block + block->timer_offset;
+ if (gtdt_frame + block->timer_count != (void *)block + block->header.length)
+ return -EINVAL;
+
+ /*
+ * Get the GT timer Frame data for every GT Block Timer
+ */
+ for (i = 0; i < block->timer_count; i++, gtdt_frame++) {
+ if (gtdt_frame->common_flags & ACPI_GTDT_GT_IS_SECURE_TIMER)
+ continue;
+ if (gtdt_frame->frame_number >= ARCH_TIMER_MEM_MAX_FRAMES ||
+ !gtdt_frame->base_address || !gtdt_frame->timer_interrupt)
+ goto error;
+
+ frame = &timer_mem->frame[gtdt_frame->frame_number];
+
+ /* duplicate frame */
+ if (frame->valid)
+ goto error;
+
+ frame->phys_irq = map_gt_gsi(gtdt_frame->timer_interrupt,
+ gtdt_frame->timer_flags);
+ if (frame->phys_irq <= 0) {
+ pr_warn("failed to map physical timer irq in frame %d.\n",
+ gtdt_frame->frame_number);
+ goto error;
+ }
+
+ if (gtdt_frame->virtual_timer_interrupt) {
+ frame->virt_irq =
+ map_gt_gsi(gtdt_frame->virtual_timer_interrupt,
+ gtdt_frame->virtual_timer_flags);
+ if (frame->virt_irq <= 0) {
+ pr_warn("failed to map virtual timer irq in frame %d.\n",
+ gtdt_frame->frame_number);
+ goto error;
+ }
+ } else {
+ pr_debug("virtual timer in frame %d not implemented.\n",
+ gtdt_frame->frame_number);
+ }
+
+ frame->cntbase = gtdt_frame->base_address;
+ /*
+ * The CNTBaseN frame is 4KB (register offsets 0x000 - 0xFFC).
+ * See ARM DDI 0487A.k_iss10775, page I1-5130, Table I1-4
+ * "CNTBaseN memory map".
+ */
+ frame->size = SZ_4K;
+ frame->valid = true;
+ }
+
+ return 0;
+
+error:
+ do {
+ if (gtdt_frame->common_flags & ACPI_GTDT_GT_IS_SECURE_TIMER ||
+ gtdt_frame->frame_number >= ARCH_TIMER_MEM_MAX_FRAMES)
+ continue;
+
+ frame = &timer_mem->frame[gtdt_frame->frame_number];
+
+ if (frame->phys_irq > 0)
+ acpi_unregister_gsi(gtdt_frame->timer_interrupt);
+ frame->phys_irq = 0;
+
+ if (frame->virt_irq > 0)
+ acpi_unregister_gsi(gtdt_frame->virtual_timer_interrupt);
+ frame->virt_irq = 0;
+ } while (i-- >= 0 && gtdt_frame--);
+
+ return -EINVAL;
+}
+
+/**
+ * acpi_arch_timer_mem_init() - Get the info of all GT blocks in GTDT table.
+ * @timer_mem: The pointer to the array of struct arch_timer_mem for returning
+ * the result of parsing. The element number of this array should
+ * be platform_timer_count(the total number of platform timers).
+ * @timer_count: It points to a integer variable which is used for storing the
+ * number of GT blocks we have parsed.
+ *
+ * Return: 0 if success, -EINVAL/-ENODEV if error.
+ */
+int __init acpi_arch_timer_mem_init(struct arch_timer_mem *timer_mem,
+ int *timer_count)
+{
+ int ret;
+ void *platform_timer;
+
+ *timer_count = 0;
+ for_each_platform_timer(platform_timer) {
+ if (is_timer_block(platform_timer)) {
+ ret = gtdt_parse_timer_block(platform_timer, timer_mem);
+ if (ret)
+ return ret;
+ timer_mem++;
+ (*timer_count)++;
+ }
+ }
+
+ if (*timer_count)
+ pr_info("found %d memory-mapped timer block(s).\n",
+ *timer_count);
+
+ return 0;
+}
+
+/*
+ * Initialize a SBSA generic Watchdog platform device info from GTDT
+ */
+static int __init gtdt_import_sbsa_gwdt(struct acpi_gtdt_watchdog *wd,
+ int index)
+{
+ struct platform_device *pdev;
+ int irq = map_gt_gsi(wd->timer_interrupt, wd->timer_flags);
+
+ /*
+ * According to SBSA specification the size of refresh and control
+ * frames of SBSA Generic Watchdog is SZ_4K(Offset 0x000 – 0xFFF).
+ */
+ struct resource res[] = {
+ DEFINE_RES_MEM(wd->control_frame_address, SZ_4K),
+ DEFINE_RES_MEM(wd->refresh_frame_address, SZ_4K),
+ DEFINE_RES_IRQ(irq),
+ };
+ int nr_res = ARRAY_SIZE(res);
+
+ pr_debug("found a Watchdog (0x%llx/0x%llx gsi:%u flags:0x%x).\n",
+ wd->refresh_frame_address, wd->control_frame_address,
+ wd->timer_interrupt, wd->timer_flags);
+
+ if (!(wd->refresh_frame_address && wd->control_frame_address)) {
+ pr_err(FW_BUG "failed to get the Watchdog base address.\n");
+ acpi_unregister_gsi(wd->timer_interrupt);
+ return -EINVAL;
+ }
+
+ if (irq <= 0) {
+ pr_warn("failed to map the Watchdog interrupt.\n");
+ nr_res--;
+ }
+
+ /*
+ * Add a platform device named "sbsa-gwdt" to match the platform driver.
+ * "sbsa-gwdt": SBSA(Server Base System Architecture) Generic Watchdog
+ * The platform driver can get device info below by matching this name.
+ */
+ pdev = platform_device_register_simple("sbsa-gwdt", index, res, nr_res);
+ if (IS_ERR(pdev)) {
+ acpi_unregister_gsi(wd->timer_interrupt);
+ return PTR_ERR(pdev);
+ }
+
+ return 0;
+}
+
+static int __init gtdt_sbsa_gwdt_init(void)
+{
+ void *platform_timer;
+ struct acpi_table_header *table;
+ int ret, timer_count, gwdt_count = 0;
+
+ if (acpi_disabled)
+ return 0;
+
+ if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_GTDT, 0, &table)))
+ return -EINVAL;
+
+ /*
+ * Note: Even though the global variable acpi_gtdt_desc has been
+ * initialized by acpi_gtdt_init() while initializing the arch timers,
+ * when we call this function to get SBSA watchdogs info from GTDT, the
+ * pointers stashed in it are stale (since they are early temporary
+ * mappings carried out before acpi_permanent_mmap is set) and we need
+ * to re-initialize them with permanent mapped pointer values to let the
+ * GTDT parsing possible.
+ */
+ ret = acpi_gtdt_init(table, &timer_count);
+ if (ret || !timer_count)
+ return ret;
+
+ for_each_platform_timer(platform_timer) {
+ if (is_non_secure_watchdog(platform_timer)) {
+ ret = gtdt_import_sbsa_gwdt(platform_timer, gwdt_count);
+ if (ret)
+ break;
+ gwdt_count++;
+ }
+ }
+
+ if (gwdt_count)
+ pr_info("found %d SBSA generic Watchdog(s).\n", gwdt_count);
+
+ return ret;
+}
+
+device_initcall(gtdt_sbsa_gwdt_init);
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/bgrt.c b/drivers/acpi/bgrt.c
index ca28aa572aa9..df1c629205e7 100644
--- a/drivers/acpi/bgrt.c
+++ b/drivers/acpi/bgrt.c
@@ -81,6 +81,12 @@ static struct attribute_group bgrt_attribute_group = {
.bin_attrs = bgrt_bin_attributes,
};
+int __init acpi_parse_bgrt(struct acpi_table_header *table)
+{
+ efi_bgrt_init(table);
+ return 0;
+}
+
static int __init bgrt_init(void)
{
int ret;
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)
ret = -EFAULT;
out_err:
@@ -1083,7 +1091,7 @@ int cppc_get_perf_ctrs(int cpunum, struct cppc_perf_fb_ctrs *perf_fb_ctrs)
perf_fb_ctrs->delivered = delivered;
perf_fb_ctrs->reference = reference;
perf_fb_ctrs->reference_perf = ref_perf;
- perf_fb_ctrs->ctr_wrap_time = ctr_wrap_time;
+ perf_fb_ctrs->wraparound_time = ctr_wrap_time;
out_err:
if (regs_in_pcc)
up_write(&pcc_data.pcc_lock);
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index f15900132912..66229ffa909b 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -65,8 +65,6 @@ static inline void acpi_cmos_rtc_init(void) {}
#endif
int acpi_rev_override_setup(char *str);
-extern bool acpi_force_hot_remove;
-
void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
const char *name);
int acpi_scan_add_handler_with_hotplug(struct acpi_scan_handler *handler,
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 662036bdc65e..c8ea9d698cd0 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1617,7 +1617,11 @@ static int cmp_map(const void *m0, const void *m1)
const struct nfit_set_info_map *map0 = m0;
const struct nfit_set_info_map *map1 = m1;
- return map0->region_offset - map1->region_offset;
+ if (map0->region_offset < map1->region_offset)
+ return -1;
+ else if (map0->region_offset > map1->region_offset)
+ return 1;
+ return 0;
}
/* Retrieve the nth entry referencing this spa */
diff --git a/drivers/acpi/pmic/intel_pmic_chtwc.c b/drivers/acpi/pmic/intel_pmic_chtwc.c
new file mode 100644
index 000000000000..85636d7a9d39
--- /dev/null
+++ b/drivers/acpi/pmic/intel_pmic_chtwc.c
@@ -0,0 +1,280 @@
+/*
+ * Intel CHT Whiskey Cove PMIC operation region driver
+ * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on various non upstream patches to support the CHT Whiskey Cove PMIC:
+ * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/mfd/intel_soc_pmic.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include "intel_pmic.h"
+
+#define CHT_WC_V1P05A_CTRL 0x6e3b
+#define CHT_WC_V1P15_CTRL 0x6e3c
+#define CHT_WC_V1P05A_VSEL 0x6e3d
+#define CHT_WC_V1P15_VSEL 0x6e3e
+#define CHT_WC_V1P8A_CTRL 0x6e56
+#define CHT_WC_V1P8SX_CTRL 0x6e57
+#define CHT_WC_VDDQ_CTRL 0x6e58
+#define CHT_WC_V1P2A_CTRL 0x6e59
+#define CHT_WC_V1P2SX_CTRL 0x6e5a
+#define CHT_WC_V1P8A_VSEL 0x6e5b
+#define CHT_WC_VDDQ_VSEL 0x6e5c
+#define CHT_WC_V2P8SX_CTRL 0x6e5d
+#define CHT_WC_V3P3A_CTRL 0x6e5e
+#define CHT_WC_V3P3SD_CTRL 0x6e5f
+#define CHT_WC_VSDIO_CTRL 0x6e67
+#define CHT_WC_V3P3A_VSEL 0x6e68
+#define CHT_WC_VPROG1A_CTRL 0x6e90
+#define CHT_WC_VPROG1B_CTRL 0x6e91
+#define CHT_WC_VPROG1F_CTRL 0x6e95
+#define CHT_WC_VPROG2D_CTRL 0x6e99
+#define CHT_WC_VPROG3A_CTRL 0x6e9a
+#define CHT_WC_VPROG3B_CTRL 0x6e9b
+#define CHT_WC_VPROG4A_CTRL 0x6e9c
+#define CHT_WC_VPROG4B_CTRL 0x6e9d
+#define CHT_WC_VPROG4C_CTRL 0x6e9e
+#define CHT_WC_VPROG4D_CTRL 0x6e9f
+#define CHT_WC_VPROG5A_CTRL 0x6ea0
+#define CHT_WC_VPROG5B_CTRL 0x6ea1
+#define CHT_WC_VPROG6A_CTRL 0x6ea2
+#define CHT_WC_VPROG6B_CTRL 0x6ea3
+#define CHT_WC_VPROG1A_VSEL 0x6ec0
+#define CHT_WC_VPROG1B_VSEL 0x6ec1
+#define CHT_WC_V1P8SX_VSEL 0x6ec2
+#define CHT_WC_V1P2SX_VSEL 0x6ec3
+#define CHT_WC_V1P2A_VSEL 0x6ec4
+#define CHT_WC_VPROG1F_VSEL 0x6ec5
+#define CHT_WC_VSDIO_VSEL 0x6ec6
+#define CHT_WC_V2P8SX_VSEL 0x6ec7
+#define CHT_WC_V3P3SD_VSEL 0x6ec8
+#define CHT_WC_VPROG2D_VSEL 0x6ec9
+#define CHT_WC_VPROG3A_VSEL 0x6eca
+#define CHT_WC_VPROG3B_VSEL 0x6ecb
+#define CHT_WC_VPROG4A_VSEL 0x6ecc
+#define CHT_WC_VPROG4B_VSEL 0x6ecd
+#define CHT_WC_VPROG4C_VSEL 0x6ece
+#define CHT_WC_VPROG4D_VSEL 0x6ecf
+#define CHT_WC_VPROG5A_VSEL 0x6ed0
+#define CHT_WC_VPROG5B_VSEL 0x6ed1
+#define CHT_WC_VPROG6A_VSEL 0x6ed2
+#define CHT_WC_VPROG6B_VSEL 0x6ed3
+
+/*
+ * Regulator support is based on the non upstream patch:
+ * "regulator: whiskey_cove: implements Whiskey Cove pmic VRF support"
+ * https://github.com/intel-aero/meta-intel-aero/blob/master/recipes-kernel/linux/linux-yocto/0019-regulator-whiskey_cove-implements-WhiskeyCove-pmic-V.patch
+ */
+static struct pmic_table power_table[] = {
+ {
+ .address = 0x0,
+ .reg = CHT_WC_V1P8A_CTRL,
+ .bit = 0x01,
+ }, /* V18A */
+ {
+ .address = 0x04,
+ .reg = CHT_WC_V1P8SX_CTRL,
+ .bit = 0x07,
+ }, /* V18X */
+ {
+ .address = 0x08,
+ .reg = CHT_WC_VDDQ_CTRL,
+ .bit = 0x01,
+ }, /* VDDQ */
+ {
+ .address = 0x0c,
+ .reg = CHT_WC_V1P2A_CTRL,
+ .bit = 0x07,
+ }, /* V12A */
+ {
+ .address = 0x10,
+ .reg = CHT_WC_V1P2SX_CTRL,
+ .bit = 0x07,
+ }, /* V12X */
+ {
+ .address = 0x14,
+ .reg = CHT_WC_V2P8SX_CTRL,
+ .bit = 0x07,
+ }, /* V28X */
+ {
+ .address = 0x18,
+ .reg = CHT_WC_V3P3A_CTRL,
+ .bit = 0x01,
+ }, /* V33A */
+ {
+ .address = 0x1c,
+ .reg = CHT_WC_V3P3SD_CTRL,
+ .bit = 0x07,
+ }, /* V3SD */
+ {
+ .address = 0x20,
+ .reg = CHT_WC_VSDIO_CTRL,
+ .bit = 0x07,
+ }, /* VSD */
+/* {
+ .address = 0x24,
+ .reg = ??,
+ .bit = ??,
+ }, ** VSW2 */
+/* {
+ .address = 0x28,
+ .reg = ??,
+ .bit = ??,
+ }, ** VSW1 */
+/* {
+ .address = 0x2c,
+ .reg = ??,
+ .bit = ??,
+ }, ** VUPY */
+/* {
+ .address = 0x30,
+ .reg = ??,
+ .bit = ??,
+ }, ** VRSO */
+ {
+ .address = 0x34,
+ .reg = CHT_WC_VPROG1A_CTRL,
+ .bit = 0x07,
+ }, /* VP1A */
+ {
+ .address = 0x38,
+ .reg = CHT_WC_VPROG1B_CTRL,
+ .bit = 0x07,
+ }, /* VP1B */
+ {
+ .address = 0x3c,
+ .reg = CHT_WC_VPROG1F_CTRL,
+ .bit = 0x07,
+ }, /* VP1F */
+ {
+ .address = 0x40,
+ .reg = CHT_WC_VPROG2D_CTRL,
+ .bit = 0x07,
+ }, /* VP2D */
+ {
+ .address = 0x44,
+ .reg = CHT_WC_VPROG3A_CTRL,
+ .bit = 0x07,
+ }, /* VP3A */
+ {
+ .address = 0x48,
+ .reg = CHT_WC_VPROG3B_CTRL,
+ .bit = 0x07,
+ }, /* VP3B */
+ {
+ .address = 0x4c,
+ .reg = CHT_WC_VPROG4A_CTRL,
+ .bit = 0x07,
+ }, /* VP4A */
+ {
+ .address = 0x50,
+ .reg = CHT_WC_VPROG4B_CTRL,
+ .bit = 0x07,
+ }, /* VP4B */
+ {
+ .address = 0x54,
+ .reg = CHT_WC_VPROG4C_CTRL,
+ .bit = 0x07,
+ }, /* VP4C */
+ {
+ .address = 0x58,
+ .reg = CHT_WC_VPROG4D_CTRL,
+ .bit = 0x07,
+ }, /* VP4D */
+ {
+ .address = 0x5c,
+ .reg = CHT_WC_VPROG5A_CTRL,
+ .bit = 0x07,
+ }, /* VP5A */
+ {
+ .address = 0x60,
+ .reg = CHT_WC_VPROG5B_CTRL,
+ .bit = 0x07,
+ }, /* VP5B */
+ {
+ .address = 0x64,
+ .reg = CHT_WC_VPROG6A_CTRL,
+ .bit = 0x07,
+ }, /* VP6A */
+ {
+ .address = 0x68,
+ .reg = CHT_WC_VPROG6B_CTRL,
+ .bit = 0x07,
+ }, /* VP6B */
+/* {
+ .address = 0x6c,
+ .reg = ??,
+ .bit = ??,
+ } ** VP7A */
+};
+
+static int intel_cht_wc_pmic_get_power(struct regmap *regmap, int reg,
+ int bit, u64 *value)
+{
+ int data;
+
+ if (regmap_read(regmap, reg, &data))
+ return -EIO;
+
+ *value = (data & bit) ? 1 : 0;
+ return 0;
+}
+
+static int intel_cht_wc_pmic_update_power(struct regmap *regmap, int reg,
+ int bitmask, bool on)
+{
+ return regmap_update_bits(regmap, reg, bitmask, on ? 1 : 0);
+}
+
+/*
+ * The thermal table and ops are empty, we do not support the Thermal opregion
+ * (DPTF) due to lacking documentation.
+ */
+static struct intel_pmic_opregion_data intel_cht_wc_pmic_opregion_data = {
+ .get_power = intel_cht_wc_pmic_get_power,
+ .update_power = intel_cht_wc_pmic_update_power,
+ .power_table = power_table,
+ .power_table_count = ARRAY_SIZE(power_table),
+};
+
+static int intel_cht_wc_pmic_opregion_probe(struct platform_device *pdev)
+{
+ struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
+
+ return intel_pmic_install_opregion_handler(&pdev->dev,
+ ACPI_HANDLE(pdev->dev.parent),
+ pmic->regmap,
+ &intel_cht_wc_pmic_opregion_data);
+}
+
+static struct platform_device_id cht_wc_opregion_id_table[] = {
+ { .name = "cht_wcove_region" },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, cht_wc_opregion_id_table);
+
+static struct platform_driver intel_cht_wc_pmic_opregion_driver = {
+ .probe = intel_cht_wc_pmic_opregion_probe,
+ .driver = {
+ .name = "cht_whiskey_cove_pmic",
+ },
+ .id_table = cht_wc_opregion_id_table,
+};
+module_platform_driver(intel_cht_wc_pmic_opregion_driver);
+
+MODULE_DESCRIPTION("Intel CHT Whiskey Cove PMIC operation region driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c
index e6e991ac20f3..55f51115f016 100644
--- a/drivers/acpi/pmic/intel_pmic_xpower.c
+++ b/drivers/acpi/pmic/intel_pmic_xpower.c
@@ -18,7 +18,6 @@
#include <linux/mfd/axp20x.h>
#include <linux/regmap.h>
#include <linux/platform_device.h>
-#include <linux/iio/consumer.h>
#include "intel_pmic.h"
#define XPOWER_GPADC_LOW 0x5b
@@ -186,28 +185,16 @@ static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg,
* @regmap: regmap of the PMIC device
* @reg: register to get the reading
*
- * We could get the sensor value by manipulating the HW regs here, but since
- * the axp288 IIO driver may also access the same regs at the same time, the
- * APIs provided by IIO subsystem are used here instead to avoid problems. As
- * a result, the two passed in params are of no actual use.
- *
* Return a positive value on success, errno on failure.
*/
static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
{
- struct iio_channel *gpadc_chan;
- int ret, val;
-
- gpadc_chan = iio_channel_get(NULL, "axp288-system-temp");
- if (IS_ERR_OR_NULL(gpadc_chan))
- return -EACCES;
+ u8 buf[2];
- ret = iio_read_channel_raw(gpadc_chan, &val);
- if (ret < 0)
- val = ret;
+ if (regmap_bulk_read(regmap, AXP288_GP_ADC_H, buf, 2))
+ return -EIO;
- iio_channel_release(gpadc_chan);
- return val;
+ return (buf[0] << 4) + ((buf[1] >> 4) & 0x0F);
}
static struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index fcd4ce6f78d5..1c2b846c5776 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -200,6 +200,7 @@ static int acpi_power_get_list_state(struct list_head *list, int *state)
return -EINVAL;
/* The state of the list is 'on' IFF all resources are 'on'. */
+ cur_state = 0;
list_for_each_entry(entry, list, node) {
struct acpi_power_resource *resource = entry->resource;
acpi_handle handle = resource->device.handle;
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c
index 3afddcd834ef..9364398204e9 100644
--- a/drivers/acpi/property.c
+++ b/drivers/acpi/property.c
@@ -37,14 +37,16 @@ static const u8 ads_uuid[16] = {
static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
const union acpi_object *desc,
- struct acpi_device_data *data);
+ struct acpi_device_data *data,
+ struct fwnode_handle *parent);
static bool acpi_extract_properties(const union acpi_object *desc,
struct acpi_device_data *data);
static bool acpi_nondev_subnode_extract(const union acpi_object *desc,
acpi_handle handle,
const union acpi_object *link,
- struct list_head *list)
+ struct list_head *list,
+ struct fwnode_handle *parent)
{
struct acpi_data_node *dn;
bool result;
@@ -55,6 +57,7 @@ static bool acpi_nondev_subnode_extract(const union acpi_object *desc,
dn->name = link->package.elements[0].string.pointer;
dn->fwnode.type = FWNODE_ACPI_DATA;
+ dn->parent = parent;
INIT_LIST_HEAD(&dn->data.subnodes);
result = acpi_extract_properties(desc, &dn->data);
@@ -71,9 +74,11 @@ static bool acpi_nondev_subnode_extract(const union acpi_object *desc,
*/
status = acpi_get_parent(handle, &scope);
if (ACPI_SUCCESS(status)
- && acpi_enumerate_nondev_subnodes(scope, desc, &dn->data))
+ && acpi_enumerate_nondev_subnodes(scope, desc, &dn->data,
+ &dn->fwnode))
result = true;
- } else if (acpi_enumerate_nondev_subnodes(NULL, desc, &dn->data)) {
+ } else if (acpi_enumerate_nondev_subnodes(NULL, desc, &dn->data,
+ &dn->fwnode)) {
result = true;
}
@@ -91,7 +96,8 @@ static bool acpi_nondev_subnode_extract(const union acpi_object *desc,
static bool acpi_nondev_subnode_data_ok(acpi_handle handle,
const union acpi_object *link,
- struct list_head *list)
+ struct list_head *list,
+ struct fwnode_handle *parent)
{
struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
acpi_status status;
@@ -101,7 +107,8 @@ static bool acpi_nondev_subnode_data_ok(acpi_handle handle,
if (ACPI_FAILURE(status))
return false;
- if (acpi_nondev_subnode_extract(buf.pointer, handle, link, list))
+ if (acpi_nondev_subnode_extract(buf.pointer, handle, link, list,
+ parent))
return true;
ACPI_FREE(buf.pointer);
@@ -110,7 +117,8 @@ static bool acpi_nondev_subnode_data_ok(acpi_handle handle,
static bool acpi_nondev_subnode_ok(acpi_handle scope,
const union acpi_object *link,
- struct list_head *list)
+ struct list_head *list,
+ struct fwnode_handle *parent)
{
acpi_handle handle;
acpi_status status;
@@ -123,12 +131,13 @@ static bool acpi_nondev_subnode_ok(acpi_handle scope,
if (ACPI_FAILURE(status))
return false;
- return acpi_nondev_subnode_data_ok(handle, link, list);
+ return acpi_nondev_subnode_data_ok(handle, link, list, parent);
}
static int acpi_add_nondev_subnodes(acpi_handle scope,
const union acpi_object *links,
- struct list_head *list)
+ struct list_head *list,
+ struct fwnode_handle *parent)
{
bool ret = false;
int i;
@@ -150,15 +159,18 @@ static int acpi_add_nondev_subnodes(acpi_handle scope,
/* The second one may be a string, a reference or a package. */
switch (link->package.elements[1].type) {
case ACPI_TYPE_STRING:
- result = acpi_nondev_subnode_ok(scope, link, list);
+ result = acpi_nondev_subnode_ok(scope, link, list,
+ parent);
break;
case ACPI_TYPE_LOCAL_REFERENCE:
handle = link->package.elements[1].reference.handle;
- result = acpi_nondev_subnode_data_ok(handle, link, list);
+ result = acpi_nondev_subnode_data_ok(handle, link, list,
+ parent);
break;
case ACPI_TYPE_PACKAGE:
desc = &link->package.elements[1];
- result = acpi_nondev_subnode_extract(desc, NULL, link, list);
+ result = acpi_nondev_subnode_extract(desc, NULL, link,
+ list, parent);
break;
default:
result = false;
@@ -172,7 +184,8 @@ static int acpi_add_nondev_subnodes(acpi_handle scope,
static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
const union acpi_object *desc,
- struct acpi_device_data *data)
+ struct acpi_device_data *data,
+ struct fwnode_handle *parent)
{
int i;
@@ -194,7 +207,8 @@ static bool acpi_enumerate_nondev_subnodes(acpi_handle scope,
if (memcmp(uuid->buffer.pointer, ads_uuid, sizeof(ads_uuid)))
continue;
- return acpi_add_nondev_subnodes(scope, links, &data->subnodes);
+ return acpi_add_nondev_subnodes(scope, links, &data->subnodes,
+ parent);
}
return false;
@@ -345,7 +359,8 @@ void acpi_init_properties(struct acpi_device *adev)
if (acpi_of)
acpi_init_of_compatible(adev);
}
- if (acpi_enumerate_nondev_subnodes(adev->handle, buf.pointer, &adev->data))
+ if (acpi_enumerate_nondev_subnodes(adev->handle, buf.pointer,
+ &adev->data, acpi_fwnode_handle(adev)))
adev->data.pointer = buf.pointer;
if (!adev->data.pointer) {
@@ -699,6 +714,8 @@ static int acpi_data_prop_read_single(struct acpi_device_data *data,
return ret;
*(char **)val = obj->string.pointer;
+
+ return 1;
} else {
ret = -EINVAL;
}
@@ -708,7 +725,15 @@ static int acpi_data_prop_read_single(struct acpi_device_data *data,
int acpi_dev_prop_read_single(struct acpi_device *adev, const char *propname,
enum dev_prop_type proptype, void *val)
{
- return adev ? acpi_data_prop_read_single(&adev->data, propname, proptype, val) : -EINVAL;
+ int ret;
+
+ if (!adev)
+ return -EINVAL;
+
+ ret = acpi_data_prop_read_single(&adev->data, propname, proptype, val);
+ if (ret < 0 || proptype != ACPI_TYPE_STRING)
+ return ret;
+ return 0;
}
static int acpi_copy_property_array_u8(const union acpi_object *items, u8 *val,
@@ -784,7 +809,7 @@ static int acpi_copy_property_array_string(const union acpi_object *items,
val[i] = items[i].string.pointer;
}
- return 0;
+ return nval;
}
static int acpi_data_prop_read(struct acpi_device_data *data,
@@ -798,7 +823,7 @@ static int acpi_data_prop_read(struct acpi_device_data *data,
if (val && nval == 1) {
ret = acpi_data_prop_read_single(data, propname, proptype, val);
- if (!ret)
+ if (ret >= 0)
return ret;
}
@@ -809,7 +834,7 @@ static int acpi_data_prop_read(struct acpi_device_data *data,
if (!val)
return obj->package.count;
- if (nval > obj->package.count)
+ if (proptype != DEV_PROP_STRING && nval > obj->package.count)
return -EOVERFLOW;
else if (nval <= 0)
return -EINVAL;
@@ -830,7 +855,9 @@ static int acpi_data_prop_read(struct acpi_device_data *data,
ret = acpi_copy_property_array_u64(items, (u64 *)val, nval);
break;
case DEV_PROP_STRING:
- ret = acpi_copy_property_array_string(items, (char **)val, nval);
+ ret = acpi_copy_property_array_string(
+ items, (char **)val,
+ min_t(u32, nval, obj->package.count));
break;
default:
ret = -EINVAL;
@@ -865,21 +892,22 @@ int acpi_node_prop_read(struct fwnode_handle *fwnode, const char *propname,
}
/**
- * acpi_get_next_subnode - Return the next child node handle for a device.
- * @dev: Device to find the next child node for.
+ * acpi_get_next_subnode - Return the next child node handle for a fwnode
+ * @fwnode: Firmware node to find the next child node for.
* @child: Handle to one of the device's child nodes or a null handle.
*/
-struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
+struct fwnode_handle *acpi_get_next_subnode(struct fwnode_handle *fwnode,
struct fwnode_handle *child)
{
- struct acpi_device *adev = ACPI_COMPANION(dev);
+ struct acpi_device *adev = to_acpi_device_node(fwnode);
struct list_head *head, *next;
- if (!adev)
- return NULL;
-
if (!child || child->type == FWNODE_ACPI) {
- head = &adev->children;
+ if (adev)
+ head = &adev->children;
+ else
+ goto nondev;
+
if (list_empty(head))
goto nondev;
@@ -888,7 +916,6 @@ struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
next = adev->node.next;
if (next == head) {
child = NULL;
- adev = ACPI_COMPANION(dev);
goto nondev;
}
adev = list_entry(next, struct acpi_device, node);
@@ -900,9 +927,16 @@ struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
nondev:
if (!child || child->type == FWNODE_ACPI_DATA) {
+ struct acpi_data_node *data = to_acpi_data_node(fwnode);
struct acpi_data_node *dn;
- head = &adev->data.subnodes;
+ if (adev)
+ head = &adev->data.subnodes;
+ else if (data)
+ head = &data->data.subnodes;
+ else
+ return NULL;
+
if (list_empty(head))
return NULL;
@@ -920,3 +954,168 @@ struct fwnode_handle *acpi_get_next_subnode(struct device *dev,
}
return NULL;
}
+
+/**
+ * acpi_node_get_parent - Return parent fwnode of this fwnode
+ * @fwnode: Firmware node whose parent to get
+ *
+ * Returns parent node of an ACPI device or data firmware node or %NULL if
+ * not available.
+ */
+struct fwnode_handle *acpi_node_get_parent(struct fwnode_handle *fwnode)
+{
+ if (is_acpi_data_node(fwnode)) {
+ /* All data nodes have parent pointer so just return that */
+ return to_acpi_data_node(fwnode)->parent;
+ } else if (is_acpi_device_node(fwnode)) {
+ acpi_handle handle, parent_handle;
+
+ handle = to_acpi_device_node(fwnode)->handle;
+ if (ACPI_SUCCESS(acpi_get_parent(handle, &parent_handle))) {
+ struct acpi_device *adev;
+
+ if (!acpi_bus_get_device(parent_handle, &adev))
+ return acpi_fwnode_handle(adev);
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * acpi_graph_get_next_endpoint - Get next endpoint ACPI firmware node
+ * @fwnode: Pointer to the parent firmware node
+ * @prev: Previous endpoint node or %NULL to get the first
+ *
+ * Looks up next endpoint ACPI firmware node below a given @fwnode. Returns
+ * %NULL if there is no next endpoint, ERR_PTR() in case of error. In case
+ * of success the next endpoint is returned.
+ */
+struct fwnode_handle *acpi_graph_get_next_endpoint(struct fwnode_handle *fwnode,
+ struct fwnode_handle *prev)
+{
+ struct fwnode_handle *port = NULL;
+ struct fwnode_handle *endpoint;
+
+ if (!prev) {
+ do {
+ port = fwnode_get_next_child_node(fwnode, port);
+ /* Ports must have port property */
+ if (fwnode_property_present(port, "port"))
+ break;
+ } while (port);
+ } else {
+ port = fwnode_get_parent(prev);
+ }
+
+ if (!port)
+ return NULL;
+
+ endpoint = fwnode_get_next_child_node(port, prev);
+ while (!endpoint) {
+ port = fwnode_get_next_child_node(fwnode, port);
+ if (!port)
+ break;
+ if (fwnode_property_present(port, "port"))
+ endpoint = fwnode_get_next_child_node(port, NULL);
+ }
+
+ if (endpoint) {
+ /* Endpoints must have "endpoint" property */
+ if (!fwnode_property_present(endpoint, "endpoint"))
+ return ERR_PTR(-EPROTO);
+ }
+
+ return endpoint;
+}
+
+/**
+ * acpi_graph_get_child_prop_value - Return a child with a given property value
+ * @fwnode: device fwnode
+ * @prop_name: The name of the property to look for
+ * @val: the desired property value
+ *
+ * Return the port node corresponding to a given port number. Returns
+ * the child node on success, NULL otherwise.
+ */
+static struct fwnode_handle *acpi_graph_get_child_prop_value(
+ struct fwnode_handle *fwnode, const char *prop_name, unsigned int val)
+{
+ struct fwnode_handle *child;
+
+ fwnode_for_each_child_node(fwnode, child) {
+ u32 nr;
+
+ if (!fwnode_property_read_u32(fwnode, prop_name, &nr))
+ continue;
+
+ if (val == nr)
+ return child;
+ }
+
+ return NULL;
+}
+
+
+/**
+ * acpi_graph_get_remote_enpoint - Parses and returns remote end of an endpoint
+ * @fwnode: Endpoint firmware node pointing to a remote device
+ * @parent: Firmware node of remote port parent is filled here if not %NULL
+ * @port: Firmware node of remote port is filled here if not %NULL
+ * @endpoint: Firmware node of remote endpoint is filled here if not %NULL
+ *
+ * Function parses remote end of ACPI firmware remote endpoint and fills in
+ * fields requested by the caller. Returns %0 in case of success and
+ * negative errno otherwise.
+ */
+int acpi_graph_get_remote_endpoint(struct fwnode_handle *fwnode,
+ struct fwnode_handle **parent,
+ struct fwnode_handle **port,
+ struct fwnode_handle **endpoint)
+{
+ unsigned int port_nr, endpoint_nr;
+ struct acpi_reference_args args;
+ int ret;
+
+ memset(&args, 0, sizeof(args));
+ ret = acpi_node_get_property_reference(fwnode, "remote-endpoint", 0,
+ &args);
+ if (ret)
+ return ret;
+
+ /*
+ * Always require two arguments with the reference: port and
+ * endpoint indices.
+ */
+ if (args.nargs != 2)
+ return -EPROTO;
+
+ fwnode = acpi_fwnode_handle(args.adev);
+ port_nr = args.args[0];
+ endpoint_nr = args.args[1];
+
+ if (parent)
+ *parent = fwnode;
+
+ if (!port && !endpoint)
+ return 0;
+
+ fwnode = acpi_graph_get_child_prop_value(fwnode, "port", port_nr);
+ if (!fwnode)
+ return -EPROTO;
+
+ if (port)
+ *port = fwnode;
+
+ if (!endpoint)
+ return 0;
+
+ fwnode = acpi_graph_get_child_prop_value(fwnode, "endpoint",
+ endpoint_nr);
+ if (!fwnode)
+ return -EPROTO;
+
+ *endpoint = fwnode;
+
+ return 0;
+}
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 192691880d55..c26931067415 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -30,12 +30,6 @@ extern struct acpi_device *acpi_root;
#define INVALID_ACPI_HANDLE ((acpi_handle)empty_zero_page)
-/*
- * If set, devices will be hot-removed even if they cannot be put offline
- * gracefully (from the kernel's standpoint).
- */
-bool acpi_force_hot_remove;
-
static const char *dummy_hid = "device";
static LIST_HEAD(acpi_dep_list);
@@ -170,9 +164,6 @@ static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data,
pn->put_online = false;
}
ret = device_offline(pn->dev);
- if (acpi_force_hot_remove)
- continue;
-
if (ret >= 0) {
pn->put_online = !ret;
} else {
@@ -241,11 +232,11 @@ static int acpi_scan_try_to_offline(struct acpi_device *device)
acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
NULL, acpi_bus_offline, (void *)true,
(void **)&errdev);
- if (!errdev || acpi_force_hot_remove)
+ if (!errdev)
acpi_bus_offline(handle, 0, (void *)true,
(void **)&errdev);
- if (errdev && !acpi_force_hot_remove) {
+ if (errdev) {
dev_warn(errdev, "Offline failed.\n");
acpi_bus_online(handle, 0, NULL, NULL);
acpi_walk_namespace(ACPI_TYPE_ANY, handle,
@@ -263,8 +254,7 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
unsigned long long sta;
acpi_status status;
- if (device->handler && device->handler->hotplug.demand_offline
- && !acpi_force_hot_remove) {
+ if (device->handler && device->handler->hotplug.demand_offline) {
if (!acpi_scan_is_offline(device, true))
return -EBUSY;
} else {
@@ -1850,6 +1840,8 @@ static void acpi_bus_attach(struct acpi_device *device)
device->flags.power_manageable = 0;
device->flags.initialized = true;
+ } else if (device->flags.visited) {
+ goto ok;
}
ret = acpi_scan_attach_handler(device);
@@ -1857,15 +1849,20 @@ static void acpi_bus_attach(struct acpi_device *device)
return;
device->flags.match_driver = true;
- if (!ret) {
- ret = device_attach(&device->dev);
- if (ret < 0)
- return;
-
- if (!ret && device->pnp.type.platform_id)
- acpi_default_enumeration(device);
+ if (ret > 0) {
+ acpi_device_set_enumerated(device);
+ goto ok;
}
+ ret = device_attach(&device->dev);
+ if (ret < 0)
+ return;
+
+ if (device->pnp.type.platform_id)
+ acpi_default_enumeration(device);
+ else
+ acpi_device_set_enumerated(device);
+
ok:
list_for_each_entry(child, &device->children, node)
acpi_bus_attach(child);
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index cf05ae973381..1b5ee1e0e5a3 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -921,7 +921,7 @@ void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
static ssize_t force_remove_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
- return sprintf(buf, "%d\n", !!acpi_force_hot_remove);
+ return sprintf(buf, "%d\n", 0);
}
static ssize_t force_remove_store(struct kobject *kobj,
@@ -935,9 +935,10 @@ static ssize_t force_remove_store(struct kobject *kobj,
if (ret < 0)
return ret;
- lock_device_hotplug();
- acpi_force_hot_remove = val;
- unlock_device_hotplug();
+ if (val) {
+ pr_err("Enabling force_remove is not supported anymore. Please report to linux-acpi@vger.kernel.org if you depend on this functionality\n");
+ return -EINVAL;
+ }
return size;
}
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 2604189d6cd1..0dae722ab2ec 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -311,22 +311,6 @@ acpi_parse_entries_array(char *id, unsigned long table_size,
}
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)
-{
- struct acpi_subtable_proc proc = {
- .id = entry_id,
- .handler = handler,
- };
-
- return acpi_parse_entries_array(id, table_size, table_header,
- &proc, 1, max_entries);
-}
-
-int __init
acpi_table_parse_entries_array(char *id,
unsigned long table_size,
struct acpi_subtable_proc *proc, int proc_num,
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 22c09952e177..27d0dcfcf47d 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -736,6 +736,72 @@ bool acpi_dev_found(const char *hid)
}
EXPORT_SYMBOL(acpi_dev_found);
+struct acpi_dev_present_info {
+ struct acpi_device_id hid[2];
+ const char *uid;
+ s64 hrv;
+};
+
+static int acpi_dev_present_cb(struct device *dev, void *data)
+{
+ struct acpi_device *adev = to_acpi_device(dev);
+ struct acpi_dev_present_info *match = data;
+ unsigned long long hrv;
+ acpi_status status;
+
+ if (acpi_match_device_ids(adev, match->hid))
+ return 0;
+
+ if (match->uid && (!adev->pnp.unique_id ||
+ strcmp(adev->pnp.unique_id, match->uid)))
+ return 0;
+
+ if (match->hrv == -1)
+ return 1;
+
+ status = acpi_evaluate_integer(adev->handle, "_HRV", NULL, &hrv);
+ if (ACPI_FAILURE(status))
+ return 0;
+
+ return hrv == match->hrv;
+}
+
+/**
+ * acpi_dev_present - Detect that a given ACPI device is present
+ * @hid: Hardware ID of the device.
+ * @uid: Unique ID of the device, pass NULL to not check _UID
+ * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
+ *
+ * Return %true if a matching device was present at the moment of invocation.
+ * Note that if the device is pluggable, it may since have disappeared.
+ *
+ * Note that unlike acpi_dev_found() this function checks the status
+ * of the device. So for devices which are present in the dsdt, but
+ * which are disabled (their _STA callback returns 0) this function
+ * will return false.
+ *
+ * For this function to work, acpi_bus_scan() must have been executed
+ * which happens in the subsys_initcall() subsection. Hence, do not
+ * call from a subsys_initcall() or earlier (use acpi_get_devices()
+ * instead). Calling from module_init() is fine (which is synonymous
+ * with device_initcall()).
+ */
+bool acpi_dev_present(const char *hid, const char *uid, s64 hrv)
+{
+ struct acpi_dev_present_info match = {};
+ struct device *dev;
+
+ strlcpy(match.hid[0].id, hid, sizeof(match.hid[0].id));
+ match.uid = uid;
+ match.hrv = hrv;
+
+ dev = bus_find_device(&acpi_bus_type, NULL, &match,
+ acpi_dev_present_cb);
+
+ return !!dev;
+}
+EXPORT_SYMBOL(acpi_dev_present);
+
/*
* acpi_backlight= handling, this is done here rather then in video_detect.c
* because __setup cannot be used in modules.
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-23 14:18:31 +0300