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BT: g12a_skt: initial host wake bt pin [1/1]

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PD#156734: bt: g12a_skt: initial host wake bt pin

1.host wake bt pin (gpiox_19) should keep high when bt
lpm function is enabled, otherwise bt moudle would go
to sleep.
2.set this pin in dts

Change-Id: I401fa158bf11b60ef1a7727ea25e55f94cf273a8
Signed-off-by: kuibao zhang <kuibao.zhang@amlogic.com>
This commit is contained in:
kuibao zhang
2018-02-02 21:28:39 +08:00
committed by Yixun Lan
parent b6129f2a0d
commit c6ef988be4
3 changed files with 30 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/amlogic/g12a_skt.dts
View File

@@ -234,6 +234,7 @@
dev_name = "bt-dev";
status = "okay";
gpio_reset = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
gpio_hostwake = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>;
};
wifi{

31
drivers/amlogic/bluetooth/bt_device.c
View File

@@ -57,6 +57,17 @@ static void bt_device_init(struct bt_dev_data *pdata)
if (pdata->gpio_en > 0)
gpio_request(pdata->gpio_en, BT_RFKILL);
if (pdata->gpio_hostwake > 0) {
gpio_request(pdata->gpio_hostwake, BT_RFKILL);
if ((pdata->power_on_pin_OD) && (!pdata->power_low_level)) {
gpio_direction_input(pdata->gpio_hostwake);
} else {
gpio_direction_output(pdata->gpio_hostwake,
!pdata->power_low_level);
}
}
}
static void bt_device_deinit(struct bt_dev_data *pdata)
@@ -67,6 +78,9 @@ static void bt_device_deinit(struct bt_dev_data *pdata)
if (pdata->gpio_en > 0)
gpio_free(pdata->gpio_en);
if (pdata->gpio_hostwake > 0)
gpio_free(pdata->gpio_hostwake);
}
static void bt_device_on(struct bt_dev_data *pdata)
@@ -133,6 +147,7 @@ static void bt_device_off(struct bt_dev_data *pdata)
set_usb_bt_power(0);
}
}
msleep(20);
}
@@ -143,10 +158,10 @@ static int bt_set_block(void *data, bool blocked)
pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on");
if (!blocked) {
pr_info("BCM_BT: going ON\n");
pr_info("AML_BT: going ON\n");
bt_device_on(pdata);
} else {
pr_info("BCM_BT: going OFF\n");
pr_info("AML_BT: going OFF\n");
bt_device_off(pdata);
}
return 0;
@@ -205,7 +220,7 @@ static int bt_probe(struct platform_device *pdev)
pdata->gpio_reset = desc_to_gpio(desc);
}
ret = of_property_read_string(pdev->dev.of_node,
ret = of_property_read_string(pdev->dev.of_node,
"gpio_en", &str);
if (ret) {
pr_warn("not get gpio_en\n");
@@ -215,6 +230,16 @@ static int bt_probe(struct platform_device *pdev)
"gpio_en", 0, NULL);
pdata->gpio_en = desc_to_gpio(desc);
}
ret = of_property_read_string(pdev->dev.of_node,
"gpio_hostwake", &str);
if (ret) {
pr_warn("not get gpio_hostwake\n");
pdata->gpio_hostwake = 0;
} else {
desc = of_get_named_gpiod_flags(pdev->dev.of_node,
"gpio_hostwake", 0, NULL);
pdata->gpio_hostwake = desc_to_gpio(desc);
}
prop = of_get_property(pdev->dev.of_node,
"power_low_level", NULL);

1
include/linux/amlogic/bt_device.h
View File

@@ -21,6 +21,7 @@
struct bt_dev_data {
int gpio_reset;
int gpio_en;
int gpio_hostwake;
int power_low_level;
int power_on_pin_OD;
};