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path: root/drivers/bluetooth/btmrvl_sdio.c
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Diffstat (limited to 'drivers/bluetooth/btmrvl_sdio.c')
-rw-r--r--drivers/bluetooth/btmrvl_sdio.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index c6ef248de5e4..f425ddf91a24 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -52,6 +52,68 @@ static struct memory_type_mapping mem_type_mapping_tbl[] = {
{"EXTLAST", NULL, 0, 0xFE},
};
+static const struct of_device_id btmrvl_sdio_of_match_table[] = {
+ { .compatible = "marvell,sd8897-bt" },
+ { .compatible = "marvell,sd8997-bt" },
+ { }
+};
+
+static irqreturn_t btmrvl_wake_irq_bt(int irq, void *priv)
+{
+ struct btmrvl_plt_wake_cfg *cfg = priv;
+
+ if (cfg->irq_bt >= 0) {
+ pr_info("%s: wake by bt", __func__);
+ cfg->wake_by_bt = true;
+ disable_irq_nosync(irq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+/* This function parses device tree node using mmc subnode devicetree API.
+ * The device node is saved in card->plt_of_node.
+ * If the device tree node exists and includes interrupts attributes, this
+ * function will request platform specific wakeup interrupt.
+ */
+static int btmrvl_sdio_probe_of(struct device *dev,
+ struct btmrvl_sdio_card *card)
+{
+ struct btmrvl_plt_wake_cfg *cfg;
+ int ret;
+
+ if (!dev->of_node ||
+ !of_match_node(btmrvl_sdio_of_match_table, dev->of_node)) {
+ pr_err("sdio platform data not available");
+ return -1;
+ }
+
+ card->plt_of_node = dev->of_node;
+
+ card->plt_wake_cfg = devm_kzalloc(dev, sizeof(*card->plt_wake_cfg),
+ GFP_KERNEL);
+ cfg = card->plt_wake_cfg;
+ if (cfg && card->plt_of_node) {
+ cfg->irq_bt = irq_of_parse_and_map(card->plt_of_node, 0);
+ if (!cfg->irq_bt) {
+ dev_err(dev, "fail to parse irq_bt from device tree");
+ } else {
+ ret = devm_request_irq(dev, cfg->irq_bt,
+ btmrvl_wake_irq_bt,
+ IRQF_TRIGGER_LOW,
+ "bt_wake", cfg);
+ if (ret) {
+ dev_err(dev,
+ "Failed to request irq_bt %d (%d)\n",
+ cfg->irq_bt, ret);
+ }
+ disable_irq(cfg->irq_bt);
+ }
+ }
+
+ return 0;
+}
+
/* The btmrvl_sdio_remove() callback function is called
* when user removes this module from kernel space or ejects
* the card from the slot. The driver handles these 2 cases
@@ -1464,6 +1526,9 @@ static int btmrvl_sdio_probe(struct sdio_func *func,
btmrvl_sdio_enable_host_int(card);
+ /* Device tree node parsing and platform specific configuration*/
+ btmrvl_sdio_probe_of(&func->dev, card);
+
priv = btmrvl_add_card(card);
if (!priv) {
BT_ERR("Initializing card failed!");
@@ -1544,6 +1609,13 @@ static int btmrvl_sdio_suspend(struct device *dev)
return 0;
}
+ /* Enable platform specific wakeup interrupt */
+ if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
+ card->plt_wake_cfg->wake_by_bt = false;
+ enable_irq(card->plt_wake_cfg->irq_bt);
+ enable_irq_wake(card->plt_wake_cfg->irq_bt);
+ }
+
priv = card->priv;
priv->adapter->is_suspending = true;
hcidev = priv->btmrvl_dev.hcidev;
@@ -1606,6 +1678,13 @@ static int btmrvl_sdio_resume(struct device *dev)
BT_DBG("%s: SDIO resume", hcidev->name);
hci_resume_dev(hcidev);
+ /* Disable platform specific wakeup interrupt */
+ if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
+ disable_irq_wake(card->plt_wake_cfg->irq_bt);
+ if (!card->plt_wake_cfg->wake_by_bt)
+ disable_irq(card->plt_wake_cfg->irq_bt);
+ }
+
return 0;
}