Merge android12-gs-pixel-5.10-sc-v2 into android12-gs-pixel-5.10-sc-qpr3
Signed-off-by: Robin Peng <robinpeng@google.com>
Change-Id: I34620ef29bcf37b428ee852d3d2bfa18bf18381a
diff --git a/lwis_device.h b/lwis_device.h
index 6ecfb44..e97f257 100644
--- a/lwis_device.h
+++ b/lwis_device.h
@@ -247,6 +247,8 @@
int pm_hibernation;
/* Is device read only */
bool is_read_only;
+ /* Adjust thread priority */
+ int adjust_thread_priority;
};
/*
diff --git a/lwis_dt.c b/lwis_dt.c
index b31e043..76fac6e 100644
--- a/lwis_dt.c
+++ b/lwis_dt.c
@@ -815,11 +815,9 @@
static int parse_pm_hibernation(struct lwis_device *lwis_dev)
{
- struct device *dev;
struct device_node *dev_node;
- dev = &(lwis_dev->plat_dev->dev);
- dev_node = dev->of_node;
+ dev_node = lwis_dev->plat_dev->dev.of_node;
lwis_dev->pm_hibernation = 1;
of_property_read_u32(dev_node, "pm-hibernation", &lwis_dev->pm_hibernation);
@@ -838,6 +836,18 @@
return 0;
}
+static int parse_thread_priority(struct lwis_device *lwis_dev)
+{
+ struct device_node *dev_node;
+
+ dev_node = lwis_dev->plat_dev->dev.of_node;
+ lwis_dev->adjust_thread_priority = 0;
+
+ of_property_read_u32(dev_node, "thread-priority", &lwis_dev->adjust_thread_priority);
+
+ return 0;
+}
+
int lwis_base_parse_dt(struct lwis_device *lwis_dev)
{
struct device *dev;
@@ -940,6 +950,8 @@
parse_access_mode(lwis_dev);
+ parse_thread_priority(lwis_dev);
+
parse_bitwidths(lwis_dev);
iommus = of_find_property(dev_node, "iommus", &iommus_len);
diff --git a/lwis_transaction.c b/lwis_transaction.c
index ba1d41d..0895123 100644
--- a/lwis_transaction.c
+++ b/lwis_transaction.c
@@ -370,7 +370,14 @@
INIT_LIST_HEAD(&client->transaction_process_queue_tasklet);
tasklet_init(&client->transaction_tasklet, transaction_tasklet_func, (unsigned long)client);
INIT_LIST_HEAD(&client->transaction_process_queue);
- client->transaction_wq = create_workqueue("lwistran");
+ if (client->lwis_dev->adjust_thread_priority != 0) {
+ /* Since I2C transactions can only be executed in workqueues, putting them in high
+ * priority to avoid scheduling delays. */
+ client->transaction_wq = alloc_ordered_workqueue(
+ "lwistran-i2c", __WQ_LEGACY | WQ_MEM_RECLAIM | WQ_HIGHPRI);
+ } else {
+ client->transaction_wq = create_workqueue("lwistran");
+ }
INIT_WORK(&client->transaction_work, transaction_work_func);
client->transaction_counter = 0;
hash_init(client->transaction_list);
