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Merge branches 'acpi-apei', 'acpi-pmic', 'acpi-video' and 'acpi-dptf'

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* acpi-apei:
  arm64: acpi: Make apei_claim_sea() synchronise with APEI's irq work
  ACPI: APEI: Kick the memory_failure() queue for synchronous errors
  mm/memory-failure: Add memory_failure_queue_kick()

* acpi-pmic:
  ACPI / PMIC: Add i2c address for thermal control

* acpi-video:
  ACPI: video: Use native backlight on Acer TravelMate 5735Z

* acpi-dptf:
  ACPI: DPTF: Add battery participant driver
  ACPI: DPTF: Additional sysfs attributes for power participant driver
This commit is contained in:
Rafael J. Wysocki 2020-06-01 17:19:43 +02:00
commit 48ccdeddc5
10 changed files with 314 additions and 31 deletions
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62
Documentation/ABI/testing/sysfs-platform-dptf
View File

@ -27,10 +27,12 @@ KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Display the platform power source
0x00 = DC
0x01 = AC
0x02 = USB
0x03 = Wireless Charger
bits[3:0] Current power source
0x00 = DC
0x01 = AC
0x02 = USB
0x03 = Wireless Charger
bits[7:4] Power source sequence number
What: /sys/bus/platform/devices/INT3407:00/dptf_power/battery_steady_power
Date: Jul, 2016
@ -38,3 +40,55 @@ KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The maximum sustained power for battery in milliwatts.
What: /sys/bus/platform/devices/INT3407:00/dptf_power/rest_of_platform_power_mw
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Shows the rest (outside of SoC) of worst-case platform power.
What: /sys/bus/platform/devices/INT3407:00/dptf_power/prochot_confirm
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(WO) Confirm embedded controller about a prochot notification.
What: /sys/bus/platform/devices/INT3532:00/dptf_battery/max_platform_power_mw
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The maximum platform power that can be supported by the battery in milli watts.
What: /sys/bus/platform/devices/INT3532:00/dptf_battery/max_steady_state_power_mw
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The maximum sustained power for battery in milli watts.
What: /sys/bus/platform/devices/INT3532:00/dptf_battery/high_freq_impedance_mohm
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The high frequency impedance value that can be obtained from battery
fuel gauge in milli Ohms.
What: /sys/bus/platform/devices/INT3532:00/dptf_battery/no_load_voltage_mv
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The no-load voltage that can be obtained from battery fuel gauge in
milli volts.
What: /sys/bus/platform/devices/INT3532:00/dptf_battery/current_discharge_capbility_ma
Date: June, 2020
KernelVersion: v5.8
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The battery discharge current capability obtained from battery fuel gauge in
milli Amps.

25
arch/arm64/kernel/acpi.c
View File

@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/irq_work.h>
#include <linux/memblock.h>
#include <linux/of_fdt.h>
#include <linux/smp.h>
@ -269,6 +270,7 @@ pgprot_t __acpi_get_mem_attribute(phys_addr_t addr)
int apei_claim_sea(struct pt_regs *regs)
{
int err = -ENOENT;
bool return_to_irqs_enabled;
unsigned long current_flags;
if (!IS_ENABLED(CONFIG_ACPI_APEI_GHES))
@ -276,6 +278,12 @@ int apei_claim_sea(struct pt_regs *regs)
current_flags = local_daif_save_flags();
/* current_flags isn't useful here as daif doesn't tell us about pNMI */
return_to_irqs_enabled = !irqs_disabled_flags(arch_local_save_flags());
if (regs)
return_to_irqs_enabled = interrupts_enabled(regs);
/*
* SEA can interrupt SError, mask it and describe this as an NMI so
* that APEI defers the handling.
@ -284,6 +292,23 @@ int apei_claim_sea(struct pt_regs *regs)
nmi_enter();
err = ghes_notify_sea();
nmi_exit();
/*
* APEI NMI-like notifications are deferred to irq_work. Unless
* we interrupted irqs-masked code, we can do that now.
*/
if (!err) {
if (return_to_irqs_enabled) {
local_daif_restore(DAIF_PROCCTX_NOIRQ);
__irq_enter();
irq_work_run();
__irq_exit();
} else {
pr_warn_ratelimited("APEI work queued but not completed");
err = -EINPROGRESS;
}
}
local_daif_restore(current_flags);
return err;

12
arch/arm64/mm/fault.c
View File

@ -635,11 +635,13 @@ static int do_sea(unsigned long addr, unsigned int esr, struct pt_regs *regs)
inf = esr_to_fault_info(esr);
/*
* Return value ignored as we rely on signal merging.
* Future patches will make this more robust.
*/
apei_claim_sea(regs);
if (user_mode(regs) && apei_claim_sea(regs) == 0) {
/*
* APEI claimed this as a firmware-first notification.
* Some processing deferred to task_work before ret_to_user().
*/
return 0;
}
if (esr & ESR_ELx_FnV)
siaddr = NULL;

67
drivers/acpi/apei/ghes.c
View File

@ -40,6 +40,7 @@
#include <linux/sched/clock.h>
#include <linux/uuid.h>
#include <linux/ras.h>
#include <linux/task_work.h>
#include <acpi/actbl1.h>
#include <acpi/ghes.h>
@ -414,23 +415,46 @@ static void ghes_clear_estatus(struct ghes *ghes,
ghes_ack_error(ghes->generic_v2);
}
static void ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata, int sev)
/*
* Called as task_work before returning to user-space.
* Ensure any queued work has been done before we return to the context that
* triggered the notification.
*/
static void ghes_kick_task_work(struct callback_head *head)
{
struct acpi_hest_generic_status *estatus;
struct ghes_estatus_node *estatus_node;
u32 node_len;
estatus_node = container_of(head, struct ghes_estatus_node, task_work);
if (IS_ENABLED(CONFIG_ACPI_APEI_MEMORY_FAILURE))
memory_failure_queue_kick(estatus_node->task_work_cpu);
estatus = GHES_ESTATUS_FROM_NODE(estatus_node);
node_len = GHES_ESTATUS_NODE_LEN(cper_estatus_len(estatus));
gen_pool_free(ghes_estatus_pool, (unsigned long)estatus_node, node_len);
}
static bool ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata,
int sev)
{
#ifdef CONFIG_ACPI_APEI_MEMORY_FAILURE
unsigned long pfn;
int flags = -1;
int sec_sev = ghes_severity(gdata->error_severity);
struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
if (!IS_ENABLED(CONFIG_ACPI_APEI_MEMORY_FAILURE))
return false;
if (!(mem_err->validation_bits & CPER_MEM_VALID_PA))
return;
return false;
pfn = mem_err->physical_addr >> PAGE_SHIFT;
if (!pfn_valid(pfn)) {
pr_warn_ratelimited(FW_WARN GHES_PFX
"Invalid address in generic error data: %#llx\n",
mem_err->physical_addr);
return;
return false;
}
/* iff following two events can be handled properly by now */
@ -440,9 +464,12 @@ static void ghes_handle_memory_failure(struct acpi_hest_generic_data *gdata, int
if (sev == GHES_SEV_RECOVERABLE && sec_sev == GHES_SEV_RECOVERABLE)
flags = 0;
if (flags != -1)
if (flags != -1) {
memory_failure_queue(pfn, flags);
#endif
return true;
}
return false;
}
/*
@ -490,7 +517,7 @@ static void ghes_handle_aer(struct acpi_hest_generic_data *gdata)
#endif
}
static void ghes_do_proc(struct ghes *ghes,
static bool ghes_do_proc(struct ghes *ghes,
const struct acpi_hest_generic_status *estatus)
{
int sev, sec_sev;
@ -498,6 +525,7 @@ static void ghes_do_proc(struct ghes *ghes,
guid_t *sec_type;
const guid_t *fru_id = &guid_null;
char *fru_text = "";
bool queued = false;
sev = ghes_severity(estatus->error_severity);
apei_estatus_for_each_section(estatus, gdata) {
@ -515,7 +543,7 @@ static void ghes_do_proc(struct ghes *ghes,
ghes_edac_report_mem_error(sev, mem_err);
arch_apei_report_mem_error(sev, mem_err);
ghes_handle_memory_failure(gdata, sev);
queued = ghes_handle_memory_failure(gdata, sev);
}
else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
ghes_handle_aer(gdata);
@ -532,6 +560,8 @@ static void ghes_do_proc(struct ghes *ghes,
gdata->error_data_length);
}
}
return queued;
}
static void __ghes_print_estatus(const char *pfx,
@ -827,7 +857,9 @@ static void ghes_proc_in_irq(struct irq_work *irq_work)
struct ghes_estatus_node *estatus_node;
struct acpi_hest_generic *generic;
struct acpi_hest_generic_status *estatus;
bool task_work_pending;
u32 len, node_len;
int ret;
llnode = llist_del_all(&ghes_estatus_llist);
/*
@ -842,14 +874,26 @@ static void ghes_proc_in_irq(struct irq_work *irq_work)
estatus = GHES_ESTATUS_FROM_NODE(estatus_node);
len = cper_estatus_len(estatus);
node_len = GHES_ESTATUS_NODE_LEN(len);
ghes_do_proc(estatus_node->ghes, estatus);
task_work_pending = ghes_do_proc(estatus_node->ghes, estatus);
if (!ghes_estatus_cached(estatus)) {
generic = estatus_node->generic;
if (ghes_print_estatus(NULL, generic, estatus))
ghes_estatus_cache_add(generic, estatus);
}
gen_pool_free(ghes_estatus_pool, (unsigned long)estatus_node,
node_len);
if (task_work_pending && current->mm != &init_mm) {
estatus_node->task_work.func = ghes_kick_task_work;
estatus_node->task_work_cpu = smp_processor_id();
ret = task_work_add(current, &estatus_node->task_work,
true);
if (ret)
estatus_node->task_work.func = NULL;
}
if (!estatus_node->task_work.func)
gen_pool_free(ghes_estatus_pool,
(unsigned long)estatus_node, node_len);
llnode = next;
}
}
@ -909,6 +953,7 @@ static int ghes_in_nmi_queue_one_entry(struct ghes *ghes,
estatus_node->ghes = ghes;
estatus_node->generic = ghes->generic;
estatus_node->task_work.func = NULL;
estatus = GHES_ESTATUS_FROM_NODE(estatus_node);
if (__ghes_read_estatus(estatus, buf_paddr, fixmap_idx, len)) {

149
drivers/acpi/dptf/dptf_power.c
View File

@ -10,12 +10,19 @@
#include <linux/platform_device.h>
/*
* Presentation of attributes which are defined for INT3407. They are:
* Presentation of attributes which are defined for INT3407 and INT3532.
* They are:
* PMAX : Maximum platform powe
* PSRC : Platform power source
* ARTG : Adapter rating
* CTYP : Charger type
* PBSS : Battery steady power
* PROP : Rest of worst case platform Power
* PBSS : Power Battery Steady State
* PBSS : Power Battery Steady State
* RBHF : High Frequency Impedance
* VBNL : Instantaneous No-Load Voltage
* CMPP : Current Discharge Capability
*/
#define DPTF_POWER_SHOW(name, object) \
static ssize_t name##_show(struct device *dev,\
@ -39,12 +46,42 @@ DPTF_POWER_SHOW(platform_power_source, PSRC)
DPTF_POWER_SHOW(adapter_rating_mw, ARTG)
DPTF_POWER_SHOW(battery_steady_power_mw, PBSS)
DPTF_POWER_SHOW(charger_type, CTYP)
DPTF_POWER_SHOW(rest_of_platform_power_mw, PROP)
DPTF_POWER_SHOW(max_steady_state_power_mw, PBSS)
DPTF_POWER_SHOW(high_freq_impedance_mohm, RBHF)
DPTF_POWER_SHOW(no_load_voltage_mv, VBNL)
DPTF_POWER_SHOW(current_discharge_capbility_ma, CMPP);
static DEVICE_ATTR_RO(max_platform_power_mw);
static DEVICE_ATTR_RO(platform_power_source);
static DEVICE_ATTR_RO(adapter_rating_mw);
static DEVICE_ATTR_RO(battery_steady_power_mw);
static DEVICE_ATTR_RO(charger_type);
static DEVICE_ATTR_RO(rest_of_platform_power_mw);
static DEVICE_ATTR_RO(max_steady_state_power_mw);
static DEVICE_ATTR_RO(high_freq_impedance_mohm);
static DEVICE_ATTR_RO(no_load_voltage_mv);
static DEVICE_ATTR_RO(current_discharge_capbility_ma);
static ssize_t prochot_confirm_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct acpi_device *acpi_dev = dev_get_drvdata(dev);
acpi_status status;
int seq_no;
if (kstrtouint(buf, 0, &seq_no) < 0)
return -EINVAL;
status = acpi_execute_simple_method(acpi_dev->handle, "PBOK", seq_no);
if (ACPI_SUCCESS(status))
return count;
return -EINVAL;
}
static DEVICE_ATTR_WO(prochot_confirm);
static struct attribute *dptf_power_attrs[] = {
&dev_attr_max_platform_power_mw.attr,
@ -52,6 +89,8 @@ static struct attribute *dptf_power_attrs[] = {
&dev_attr_adapter_rating_mw.attr,
&dev_attr_battery_steady_power_mw.attr,
&dev_attr_charger_type.attr,
&dev_attr_rest_of_platform_power_mw.attr,
&dev_attr_prochot_confirm.attr,
NULL
};
@ -60,10 +99,79 @@ static const struct attribute_group dptf_power_attribute_group = {
.name = "dptf_power"
};
static struct attribute *dptf_battery_attrs[] = {
&dev_attr_max_platform_power_mw.attr,
&dev_attr_max_steady_state_power_mw.attr,
&dev_attr_high_freq_impedance_mohm.attr,
&dev_attr_no_load_voltage_mv.attr,
&dev_attr_current_discharge_capbility_ma.attr,
NULL
};
static const struct attribute_group dptf_battery_attribute_group = {
.attrs = dptf_battery_attrs,
.name = "dptf_battery"
};
#define MAX_POWER_CHANGED 0x80
#define POWER_STATE_CHANGED 0x81
#define STEADY_STATE_POWER_CHANGED 0x83
#define POWER_PROP_CHANGE_EVENT 0x84
#define IMPEDANCED_CHNGED 0x85
#define VOLTAGE_CURRENT_CHANGED 0x86
static long long dptf_participant_type(acpi_handle handle)
{
unsigned long long ptype;
acpi_status status;
status = acpi_evaluate_integer(handle, "PTYP", NULL, &ptype);
if (ACPI_FAILURE(status))
return -ENODEV;
return ptype;
}
static void dptf_power_notify(acpi_handle handle, u32 event, void *data)
{
struct platform_device *pdev = data;
char *attr;
switch (event) {
case POWER_STATE_CHANGED:
attr = "platform_power_source";
break;
case POWER_PROP_CHANGE_EVENT:
attr = "rest_of_platform_power_mw";
break;
case MAX_POWER_CHANGED:
attr = "max_platform_power_mw";
break;
case STEADY_STATE_POWER_CHANGED:
attr = "max_steady_state_power_mw";
break;
case VOLTAGE_CURRENT_CHANGED:
attr = "no_load_voltage_mv";
break;
default:
dev_err(&pdev->dev, "Unsupported event [0x%x]\n", event);
return;
}
/*
* Notify that an attribute is changed, so that user space can read
* again.
*/
if (dptf_participant_type(handle) == 0x0CULL)
sysfs_notify(&pdev->dev.kobj, "dptf_battery", attr);
else
sysfs_notify(&pdev->dev.kobj, "dptf_power", attr);
}
static int dptf_power_add(struct platform_device *pdev)
{
const struct attribute_group *attr_group;
struct acpi_device *acpi_dev;
acpi_status status;
unsigned long long ptype;
int result;
@ -71,18 +179,30 @@ static int dptf_power_add(struct platform_device *pdev)
if (!acpi_dev)
return -ENODEV;
status = acpi_evaluate_integer(acpi_dev->handle, "PTYP", NULL, &ptype);
if (ACPI_FAILURE(status))
ptype = dptf_participant_type(acpi_dev->handle);
if (ptype == 0x11)
attr_group = &dptf_power_attribute_group;
else if (ptype == 0x0C)
attr_group = &dptf_battery_attribute_group;
else
return -ENODEV;
if (ptype != 0x11)
return -ENODEV;
result = sysfs_create_group(&pdev->dev.kobj,
&dptf_power_attribute_group);
result = acpi_install_notify_handler(acpi_dev->handle,
ACPI_DEVICE_NOTIFY,
dptf_power_notify,
(void *)pdev);
if (result)
return result;
result = sysfs_create_group(&pdev->dev.kobj,
attr_group);
if (result) {
acpi_remove_notify_handler(acpi_dev->handle,
ACPI_DEVICE_NOTIFY,
dptf_power_notify);
return result;
}
platform_set_drvdata(pdev, acpi_dev);
return 0;
@ -90,14 +210,23 @@ static int dptf_power_add(struct platform_device *pdev)
static int dptf_power_remove(struct platform_device *pdev)
{
struct acpi_device *acpi_dev = platform_get_drvdata(pdev);
sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
acpi_remove_notify_handler(acpi_dev->handle,
ACPI_DEVICE_NOTIFY,
dptf_power_notify);
if (dptf_participant_type(acpi_dev->handle) == 0x0CULL)
sysfs_remove_group(&pdev->dev.kobj, &dptf_battery_attribute_group);
else
sysfs_remove_group(&pdev->dev.kobj, &dptf_power_attribute_group);
return 0;
}
static const struct acpi_device_id int3407_device_ids[] = {
{"INT3407", 0},
{"INT3532", 0},
{"INTC1047", 0},
{"", 0},
};

1
drivers/acpi/pmic/intel_pmic_chtdc_ti.c
View File

@ -102,6 +102,7 @@ static struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = {
.power_table_count = ARRAY_SIZE(chtdc_ti_power_table),
.thermal_table = chtdc_ti_thermal_table,
.thermal_table_count = ARRAY_SIZE(chtdc_ti_thermal_table),
.pmic_i2c_address = 0x5e,
};
static int chtdc_ti_pmic_opregion_probe(struct platform_device *pdev)

10
drivers/acpi/video_detect.c
View File

@ -361,6 +361,16 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_BOARD_NAME, "JV50"),
},
},
{
/* https://bugzilla.kernel.org/show_bug.cgi?id=207835 */
.callback = video_detect_force_native,
.ident = "Acer TravelMate 5735Z",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 5735Z"),
DMI_MATCH(DMI_BOARD_NAME, "BA51_MV"),
},
},
/*
* Desktops which falsely report a backlight and which our heuristics

3
include/acpi/ghes.h
View File

@ -33,6 +33,9 @@ struct ghes_estatus_node {
struct llist_node llnode;
struct acpi_hest_generic *generic;
struct ghes *ghes;
int task_work_cpu;
struct callback_head task_work;
};
struct ghes_estatus_cache {

1
include/linux/mm.h
View File

@ -3012,6 +3012,7 @@ enum mf_flags {
};
extern int memory_failure(unsigned long pfn, int flags);
extern void memory_failure_queue(unsigned long pfn, int flags);
extern void memory_failure_queue_kick(int cpu);
extern int unpoison_memory(unsigned long pfn);
extern int get_hwpoison_page(struct page *page);
#define put_hwpoison_page(page) put_page(page)

15
mm/memory-failure.c
View File

@ -1493,7 +1493,7 @@ static void memory_failure_work_func(struct work_struct *work)
unsigned long proc_flags;
int gotten;
mf_cpu = this_cpu_ptr(&memory_failure_cpu);
mf_cpu = container_of(work, struct memory_failure_cpu, work);
for (;;) {
spin_lock_irqsave(&mf_cpu->lock, proc_flags);
gotten = kfifo_get(&mf_cpu->fifo, &entry);
@ -1507,6 +1507,19 @@ static void memory_failure_work_func(struct work_struct *work)
}
}
/*
* Process memory_failure work queued on the specified CPU.
* Used to avoid return-to-userspace racing with the memory_failure workqueue.
*/
void memory_failure_queue_kick(int cpu)
{
struct memory_failure_cpu *mf_cpu;
mf_cpu = &per_cpu(memory_failure_cpu, cpu);
cancel_work_sync(&mf_cpu->work);
memory_failure_work_func(&mf_cpu->work);
}
static int __init memory_failure_init(void)
{
struct memory_failure_cpu *mf_cpu;