ACPI: bus: Indicate support for the Generic Event Device thru _OSC

[ Upstream commit a8a967a243d71dd635ede076020f665a4df51c63 ]

A device driver for the Generic Event Device (ACPI0013) already
exists for quite some time, but support for it was never reported
thru _OSC.

Fix this by setting bit 11 ("Generic Event Device support") when
evaluating _OSC.

Fixes: 3db80c230da1 ("ACPI: implement Generic Event Device")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index aee91fa2a45967e8ee9d3f162d3ac0a067cad832..9486c1be7258e859aaec6cfae842cd61901e03a2 100644 (file)
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -322,6 +322,7 @@ static void acpi_bus_osc_negotiate_platform_control(void)
        capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT;
        capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT;
        capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_OVER_16_PSTATES_SUPPORT;
+       capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_GED_SUPPORT;
        if (IS_ENABLED(CONFIG_ACPI_PRMT))
                capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PRM_SUPPORT;
        if (IS_ENABLED(CONFIG_ACPI_FFH))

diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 7658d06b5bccf52c3ac35db493e714d6c297b78b..60517f4650a3b3d6aa04c1659a3e6c43ac745bc3 100644 (file)
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -575,6 +575,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context);
 #define OSC_SB_OSLPI_SUPPORT                   0x00000100
 #define OSC_SB_FAST_THERMAL_SAMPLING_SUPPORT   0x00000200
 #define OSC_SB_OVER_16_PSTATES_SUPPORT         0x00000400
+#define OSC_SB_GED_SUPPORT                     0x00000800
 #define OSC_SB_CPC_DIVERSE_HIGH_SUPPORT                0x00001000
 #define OSC_SB_GENERIC_INITIATOR_SUPPORT       0x00002000
 #define OSC_SB_CPC_FLEXIBLE_ADR_SPACE          0x00004000