]> asedeno.scripts.mit.edu Git - linux.git/blobdiff - drivers/acpi/bus.c
Merge tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan...
[linux.git] / drivers / acpi / bus.c
index f87ed3be779ae3a2f2e9a354e2f55f7badc83c34..0dad0bd9327b5ac2338f0c8b1e4c021532a47196 100644 (file)
@@ -66,10 +66,37 @@ static int set_copy_dsdt(const struct dmi_system_id *id)
        return 0;
 }
 #endif
+static int set_gbl_term_list(const struct dmi_system_id *id)
+{
+       acpi_gbl_parse_table_as_term_list = 1;
+       return 0;
+}
 
-static const struct dmi_system_id dsdt_dmi_table[] __initconst = {
+static const struct dmi_system_id acpi_quirks_dmi_table[] __initconst = {
+       /*
+        * Touchpad on Dell XPS 9570/Precision M5530 doesn't work under I2C
+        * mode.
+        * https://bugzilla.kernel.org/show_bug.cgi?id=198515
+        */
+       {
+               .callback = set_gbl_term_list,
+               .ident = "Dell Precision M5530",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Precision M5530"),
+               },
+       },
+       {
+               .callback = set_gbl_term_list,
+               .ident = "Dell XPS 15 9570",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "XPS 15 9570"),
+               },
+       },
        /*
         * Invoke DSDT corruption work-around on all Toshiba Satellite.
+        * DSDT will be copied to memory.
         * https://bugzilla.kernel.org/show_bug.cgi?id=14679
         */
        {
@@ -83,7 +110,7 @@ static const struct dmi_system_id dsdt_dmi_table[] __initconst = {
        {}
 };
 #else
-static const struct dmi_system_id dsdt_dmi_table[] __initconst = {
+static const struct dmi_system_id acpi_quirks_dmi_table[] __initconst = {
        {}
 };
 #endif
@@ -108,6 +135,7 @@ acpi_status acpi_bus_get_status_handle(acpi_handle handle,
        }
        return status;
 }
+EXPORT_SYMBOL_GPL(acpi_bus_get_status_handle);
 
 int acpi_bus_get_status(struct acpi_device *device)
 {
@@ -119,6 +147,12 @@ int acpi_bus_get_status(struct acpi_device *device)
                return 0;
        }
 
+       /* Battery devices must have their deps met before calling _STA */
+       if (acpi_device_is_battery(device) && device->dep_unmet) {
+               acpi_set_device_status(device, 0);
+               return 0;
+       }
+
        status = acpi_bus_get_status_handle(device->handle, &sta);
        if (ACPI_FAILURE(status))
                return -ENODEV;
@@ -626,13 +660,15 @@ struct acpi_device *acpi_companion_match(const struct device *dev)
  * acpi_of_match_device - Match device object using the "compatible" property.
  * @adev: ACPI device object to match.
  * @of_match_table: List of device IDs to match against.
+ * @of_id: OF ID if matched
  *
  * If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID in its list of
  * identifiers and a _DSD object with the "compatible" property, use that
  * property to match against the given list of identifiers.
  */
 static bool acpi_of_match_device(struct acpi_device *adev,
-                                const struct of_device_id *of_match_table)
+                                const struct of_device_id *of_match_table,
+                                const struct of_device_id **of_id)
 {
        const union acpi_object *of_compatible, *obj;
        int i, nval;
@@ -656,8 +692,11 @@ static bool acpi_of_match_device(struct acpi_device *adev,
                const struct of_device_id *id;
 
                for (id = of_match_table; id->compatible[0]; id++)
-                       if (!strcasecmp(obj->string.pointer, id->compatible))
+                       if (!strcasecmp(obj->string.pointer, id->compatible)) {
+                               if (of_id)
+                                       *of_id = id;
                                return true;
+                       }
        }
 
        return false;
@@ -728,10 +767,11 @@ static bool __acpi_match_device_cls(const struct acpi_device_id *id,
        return true;
 }
 
-static const struct acpi_device_id *__acpi_match_device(
-       struct acpi_device *device,
-       const struct acpi_device_id *ids,
-       const struct of_device_id *of_ids)
+static bool __acpi_match_device(struct acpi_device *device,
+                               const struct acpi_device_id *acpi_ids,
+                               const struct of_device_id *of_ids,
+                               const struct acpi_device_id **acpi_id,
+                               const struct of_device_id **of_id)
 {
        const struct acpi_device_id *id;
        struct acpi_hardware_id *hwid;
@@ -741,30 +781,32 @@ static const struct acpi_device_id *__acpi_match_device(
         * driver for it.
         */
        if (!device || !device->status.present)
-               return NULL;
+               return false;
 
        list_for_each_entry(hwid, &device->pnp.ids, list) {
                /* First, check the ACPI/PNP IDs provided by the caller. */
-               for (id = ids; id->id[0] || id->cls; id++) {
-                       if (id->id[0] && !strcmp((char *) id->id, hwid->id))
-                               return id;
-                       else if (id->cls && __acpi_match_device_cls(id, hwid))
-                               return id;
+               if (acpi_ids) {
+                       for (id = acpi_ids; id->id[0] || id->cls; id++) {
+                               if (id->id[0] && !strcmp((char *)id->id, hwid->id))
+                                       goto out_acpi_match;
+                               if (id->cls && __acpi_match_device_cls(id, hwid))
+                                       goto out_acpi_match;
+                       }
                }
 
                /*
                 * Next, check ACPI_DT_NAMESPACE_HID and try to match the
                 * "compatible" property if found.
-                *
-                * The id returned by the below is not valid, but the only
-                * caller passing non-NULL of_ids here is only interested in
-                * whether or not the return value is NULL.
                 */
-               if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id)
-                   && acpi_of_match_device(device, of_ids))
-                       return id;
+               if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id))
+                       return acpi_of_match_device(device, of_ids, of_id);
        }
-       return NULL;
+       return false;
+
+out_acpi_match:
+       if (acpi_id)
+               *acpi_id = id;
+       return true;
 }
 
 /**
@@ -781,32 +823,29 @@ static const struct acpi_device_id *__acpi_match_device(
 const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
                                               const struct device *dev)
 {
-       return __acpi_match_device(acpi_companion_match(dev), ids, NULL);
+       const struct acpi_device_id *id = NULL;
+
+       __acpi_match_device(acpi_companion_match(dev), ids, NULL, &id, NULL);
+       return id;
 }
 EXPORT_SYMBOL_GPL(acpi_match_device);
 
-void *acpi_get_match_data(const struct device *dev)
+const void *acpi_device_get_match_data(const struct device *dev)
 {
        const struct acpi_device_id *match;
 
-       if (!dev->driver)
-               return NULL;
-
-       if (!dev->driver->acpi_match_table)
-               return NULL;
-
        match = acpi_match_device(dev->driver->acpi_match_table, dev);
        if (!match)
                return NULL;
 
-       return (void *)match->driver_data;
+       return (const void *)match->driver_data;
 }
-EXPORT_SYMBOL_GPL(acpi_get_match_data);
+EXPORT_SYMBOL_GPL(acpi_device_get_match_data);
 
 int acpi_match_device_ids(struct acpi_device *device,
                          const struct acpi_device_id *ids)
 {
-       return __acpi_match_device(device, ids, NULL) ? 0 : -ENOENT;
+       return __acpi_match_device(device, ids, NULL, NULL, NULL) ? 0 : -ENOENT;
 }
 EXPORT_SYMBOL(acpi_match_device_ids);
 
@@ -815,10 +854,12 @@ bool acpi_driver_match_device(struct device *dev,
 {
        if (!drv->acpi_match_table)
                return acpi_of_match_device(ACPI_COMPANION(dev),
-                                           drv->of_match_table);
+                                           drv->of_match_table,
+                                           NULL);
 
-       return !!__acpi_match_device(acpi_companion_match(dev),
-                                    drv->acpi_match_table, drv->of_match_table);
+       return __acpi_match_device(acpi_companion_match(dev),
+                                  drv->acpi_match_table, drv->of_match_table,
+                                  NULL, NULL);
 }
 EXPORT_SYMBOL_GPL(acpi_driver_match_device);
 
@@ -1019,11 +1060,8 @@ void __init acpi_early_init(void)
 
        acpi_permanent_mmap = true;
 
-       /*
-        * If the machine falls into the DMI check table,
-        * DSDT will be copied to memory
-        */
-       dmi_check_system(dsdt_dmi_table);
+       /* Check machine-specific quirks */
+       dmi_check_system(acpi_quirks_dmi_table);
 
        status = acpi_reallocate_root_table();
        if (ACPI_FAILURE(status)) {