Handshake pin is used for Lattice MIPI aggregator to enable the
camera sensor. After pulled up, recommend to wail ~250ms to get
everything ready.
Signed-off-by: Hao Yao <hao.yao@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/platform/x86/intel/int3472/common.h | 1 +
drivers/platform/x86/intel/int3472/discrete.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/drivers/platform/x86/intel/int3472/common.h b/drivers/platform/x86/intel/int3472/common.h
index 655ae3ec0593..3ad4c72afb45 100644
--- a/drivers/platform/x86/intel/int3472/common.h
+++ b/drivers/platform/x86/intel/int3472/common.h
@@ -23,6 +23,7 @@
#define INT3472_GPIO_TYPE_POWER_ENABLE 0x0b
#define INT3472_GPIO_TYPE_CLK_ENABLE 0x0c
#define INT3472_GPIO_TYPE_PRIVACY_LED 0x0d
+#define INT3472_GPIO_TYPE_HANDSHAKE 0x12
#define INT3472_PDEV_MAX_NAME_LEN 23
#define INT3472_MAX_SENSOR_GPIOS 3
diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
index b644ce65c990..4753161b4080 100644
--- a/drivers/platform/x86/intel/int3472/discrete.c
+++ b/drivers/platform/x86/intel/int3472/discrete.c
@@ -111,6 +111,10 @@ static void int3472_get_func_and_polarity(u8 type, const char **func, u32 *polar
*func = "power-enable";
*polarity = GPIO_ACTIVE_HIGH;
break;
+ case INT3472_GPIO_TYPE_HANDSHAKE:
+ *func = "handshake";
+ *polarity = GPIO_ACTIVE_HIGH;
+ break;
default:
*func = "unknown";
*polarity = GPIO_ACTIVE_HIGH;
@@ -201,6 +205,7 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
switch (type) {
case INT3472_GPIO_TYPE_RESET:
case INT3472_GPIO_TYPE_POWERDOWN:
+ case INT3472_GPIO_TYPE_HANDSHAKE:
ret = skl_int3472_map_gpio_to_sensor(int3472, agpio, func, polarity);
if (ret)
err_msg = "Failed to map GPIO pin to sensor\n";
--
2.34.1
