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authorXinming Hu <huxm@marvell.com>2016-04-26 16:57:27 +0300
committerMarcel Holtmann <marcel@holtmann.org>2016-05-02 20:26:15 +0300
commitbb7f4f0bcee6844632d7366d6abff4b9996ad454 (patch)
tree7a3bf4a02c6b4a2a4ef6e79f940c7edf1ffdf15e /drivers/bluetooth/btmrvl_main.c
parent0065d1c5acdb60ee2c0e54585a29243718465bb7 (diff)
downloadlinux-bb7f4f0bcee6844632d7366d6abff4b9996ad454.tar.xz
btmrvl: add platform specific wakeup interrupt support
On some arm-based platforms, we need to configure platform specific parameters by device tree node and also define our node as a child node of parent SDIO host controller. This patch parses these parameters from device tree. It includes calibration data download to firmware, wakeup pin configured to firmware, and soc specific wake up gpio, which will be set as wakeup interrupt pin. Signed-off-by: Xinming Hu <huxm@marvell.com> Signed-off-by: Amitkumar Karwar <akarwar@marvell.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btmrvl_main.c')
-rw-r--r--drivers/bluetooth/btmrvl_main.c35
1 files changed, 20 insertions, 15 deletions
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c
index f25a825a693f..7ad8d61c0c61 100644
--- a/drivers/bluetooth/btmrvl_main.c
+++ b/drivers/bluetooth/btmrvl_main.c
@@ -510,34 +510,39 @@ static int btmrvl_download_cal_data(struct btmrvl_private *priv,
static int btmrvl_check_device_tree(struct btmrvl_private *priv)
{
struct device_node *dt_node;
+ struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
u8 cal_data[BT_CAL_HDR_LEN + BT_CAL_DATA_SIZE];
- int ret;
- u32 val;
+ int ret = 0;
+ u16 gpio, gap;
+
+ if (card->plt_of_node) {
+ dt_node = card->plt_of_node;
+ ret = of_property_read_u16(dt_node, "marvell,wakeup-pin",
+ &gpio);
+ if (ret)
+ gpio = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
+
+ ret = of_property_read_u16(dt_node, "marvell,wakeup-gap-ms",
+ &gap);
+ if (ret)
+ gap = (u8)(priv->btmrvl_dev.gpio_gap & 0x00ff);
- for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
- ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
- if (!ret)
- priv->btmrvl_dev.gpio_gap = val;
+ priv->btmrvl_dev.gpio_gap = (gpio << 8) + gap;
- ret = of_property_read_u8_array(dt_node, "btmrvl,cal-data",
+ ret = of_property_read_u8_array(dt_node, "marvell,cal-data",
cal_data + BT_CAL_HDR_LEN,
BT_CAL_DATA_SIZE);
- if (ret) {
- of_node_put(dt_node);
+ if (ret)
return ret;
- }
BT_DBG("Use cal data from device tree");
ret = btmrvl_download_cal_data(priv, cal_data,
BT_CAL_DATA_SIZE);
- if (ret) {
+ if (ret)
BT_ERR("Fail to download calibrate data");
- of_node_put(dt_node);
- return ret;
- }
}
- return 0;
+ return ret;
}
static int btmrvl_setup(struct hci_dev *hdev)