Contributors: 25
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jesse Barnes |
544 |
40.42% |
3 |
8.33% |
| Rajat Jain |
292 |
21.69% |
1 |
2.78% |
| Heikki Krogerus |
148 |
11.00% |
1 |
2.78% |
| Takashi Iwai |
80 |
5.94% |
1 |
2.78% |
| Kai-Heng Feng |
59 |
4.38% |
1 |
2.78% |
| Hans de Goede |
47 |
3.49% |
1 |
2.78% |
| Jani Nikula |
35 |
2.60% |
7 |
19.44% |
| Jiang Liu |
29 |
2.15% |
1 |
2.78% |
| Chris Wilson |
28 |
2.08% |
3 |
8.33% |
| Andy Shevchenko |
19 |
1.41% |
1 |
2.78% |
| Zenghui Yu |
16 |
1.19% |
1 |
2.78% |
| Daniel Vetter |
9 |
0.67% |
1 |
2.78% |
| Keith Packard |
9 |
0.67% |
1 |
2.78% |
| Manasi D Navare |
6 |
0.45% |
1 |
2.78% |
| Thomas Zimmermann |
4 |
0.30% |
1 |
2.78% |
| Yakui Zhao |
3 |
0.22% |
1 |
2.78% |
| Rui Zhang |
3 |
0.22% |
1 |
2.78% |
| Linus Torvalds (pre-git) |
3 |
0.22% |
2 |
5.56% |
| Matthew Garrett |
3 |
0.22% |
1 |
2.78% |
| Dave Airlie |
3 |
0.22% |
1 |
2.78% |
| Rafael J. Wysocki |
2 |
0.15% |
1 |
2.78% |
| Lukas Wunner |
1 |
0.07% |
1 |
2.78% |
| Greg Kroah-Hartman |
1 |
0.07% |
1 |
2.78% |
| Adam Jackson |
1 |
0.07% |
1 |
2.78% |
| Ville Syrjälä |
1 |
0.07% |
1 |
2.78% |
| Total |
1346 |
|
36 |
|
// SPDX-License-Identifier: GPL-2.0
/*
* Intel ACPI functions
*
* _DSM related code stolen from nouveau_acpi.c.
*/
#include <linux/pci.h>
#include <linux/acpi.h>
#include <acpi/video.h>
#include "i915_drv.h"
#include "intel_acpi.h"
#include "intel_display_types.h"
#define INTEL_DSM_REVISION_ID 1 /* For Calpella anyway... */
#define INTEL_DSM_FN_PLATFORM_MUX_INFO 1 /* No args */
static const guid_t intel_dsm_guid =
GUID_INIT(0x7ed873d3, 0xc2d0, 0x4e4f,
0xa8, 0x54, 0x0f, 0x13, 0x17, 0xb0, 0x1c, 0x2c);
#define INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED 0 /* No args */
static const guid_t intel_dsm_guid2 =
GUID_INIT(0x3e5b41c6, 0xeb1d, 0x4260,
0x9d, 0x15, 0xc7, 0x1f, 0xba, 0xda, 0xe4, 0x14);
static char *intel_dsm_port_name(u8 id)
{
switch (id) {
case 0:
return "Reserved";
case 1:
return "Analog VGA";
case 2:
return "LVDS";
case 3:
return "Reserved";
case 4:
return "HDMI/DVI_B";
case 5:
return "HDMI/DVI_C";
case 6:
return "HDMI/DVI_D";
case 7:
return "DisplayPort_A";
case 8:
return "DisplayPort_B";
case 9:
return "DisplayPort_C";
case 0xa:
return "DisplayPort_D";
case 0xb:
case 0xc:
case 0xd:
return "Reserved";
case 0xe:
return "WiDi";
default:
return "bad type";
}
}
static char *intel_dsm_mux_type(u8 type)
{
switch (type) {
case 0:
return "unknown";
case 1:
return "No MUX, iGPU only";
case 2:
return "No MUX, dGPU only";
case 3:
return "MUXed between iGPU and dGPU";
default:
return "bad type";
}
}
static void intel_dsm_platform_mux_info(acpi_handle dhandle)
{
int i;
union acpi_object *pkg, *connector_count;
pkg = acpi_evaluate_dsm_typed(dhandle, &intel_dsm_guid,
INTEL_DSM_REVISION_ID, INTEL_DSM_FN_PLATFORM_MUX_INFO,
NULL, ACPI_TYPE_PACKAGE);
if (!pkg) {
DRM_DEBUG_DRIVER("failed to evaluate _DSM\n");
return;
}
if (!pkg->package.count) {
DRM_DEBUG_DRIVER("no connection in _DSM\n");
return;
}
connector_count = &pkg->package.elements[0];
DRM_DEBUG_DRIVER("MUX info connectors: %lld\n",
(unsigned long long)connector_count->integer.value);
for (i = 1; i < pkg->package.count; i++) {
union acpi_object *obj = &pkg->package.elements[i];
union acpi_object *connector_id;
union acpi_object *info;
if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count < 2) {
DRM_DEBUG_DRIVER("Invalid object for MUX #%d\n", i);
continue;
}
connector_id = &obj->package.elements[0];
info = &obj->package.elements[1];
if (info->type != ACPI_TYPE_BUFFER || info->buffer.length < 4) {
DRM_DEBUG_DRIVER("Invalid info for MUX obj #%d\n", i);
continue;
}
DRM_DEBUG_DRIVER("Connector id: 0x%016llx\n",
(unsigned long long)connector_id->integer.value);
DRM_DEBUG_DRIVER(" port id: %s\n",
intel_dsm_port_name(info->buffer.pointer[0]));
DRM_DEBUG_DRIVER(" display mux info: %s\n",
intel_dsm_mux_type(info->buffer.pointer[1]));
DRM_DEBUG_DRIVER(" aux/dc mux info: %s\n",
intel_dsm_mux_type(info->buffer.pointer[2]));
DRM_DEBUG_DRIVER(" hpd mux info: %s\n",
intel_dsm_mux_type(info->buffer.pointer[3]));
}
ACPI_FREE(pkg);
}
static acpi_handle intel_dsm_pci_probe(struct pci_dev *pdev)
{
acpi_handle dhandle;
dhandle = ACPI_HANDLE(&pdev->dev);
if (!dhandle)
return NULL;
if (!acpi_check_dsm(dhandle, &intel_dsm_guid, INTEL_DSM_REVISION_ID,
1 << INTEL_DSM_FN_PLATFORM_MUX_INFO)) {
DRM_DEBUG_KMS("no _DSM method for intel device\n");
return NULL;
}
intel_dsm_platform_mux_info(dhandle);
return dhandle;
}
static bool intel_dsm_detect(void)
{
acpi_handle dhandle = NULL;
char acpi_method_name[255] = {};
struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name};
struct pci_dev *pdev = NULL;
int vga_count = 0;
while ((pdev = pci_get_class(PCI_CLASS_DISPLAY_VGA << 8, pdev)) != NULL) {
vga_count++;
dhandle = intel_dsm_pci_probe(pdev) ?: dhandle;
}
if (vga_count == 2 && dhandle) {
acpi_get_name(dhandle, ACPI_FULL_PATHNAME, &buffer);
DRM_DEBUG_DRIVER("vga_switcheroo: detected DSM switching method %s handle\n",
acpi_method_name);
return true;
}
return false;
}
void intel_register_dsm_handler(void)
{
if (!intel_dsm_detect())
return;
}
void intel_unregister_dsm_handler(void)
{
}
void intel_dsm_get_bios_data_funcs_supported(struct drm_i915_private *i915)
{
struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
acpi_handle dhandle;
union acpi_object *obj;
dhandle = ACPI_HANDLE(&pdev->dev);
if (!dhandle)
return;
obj = acpi_evaluate_dsm(dhandle, &intel_dsm_guid2, INTEL_DSM_REVISION_ID,
INTEL_DSM_FN_GET_BIOS_DATA_FUNCS_SUPPORTED, NULL);
if (obj)
ACPI_FREE(obj);
}
/*
* ACPI Specification, Revision 5.0, Appendix B.3.2 _DOD (Enumerate All Devices
* Attached to the Display Adapter).
*/
#define ACPI_DISPLAY_INDEX_SHIFT 0
#define ACPI_DISPLAY_INDEX_MASK (0xf << 0)
#define ACPI_DISPLAY_PORT_ATTACHMENT_SHIFT 4
#define ACPI_DISPLAY_PORT_ATTACHMENT_MASK (0xf << 4)
#define ACPI_DISPLAY_TYPE_SHIFT 8
#define ACPI_DISPLAY_TYPE_MASK (0xf << 8)
#define ACPI_DISPLAY_TYPE_OTHER (0 << 8)
#define ACPI_DISPLAY_TYPE_VGA (1 << 8)
#define ACPI_DISPLAY_TYPE_TV (2 << 8)
#define ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL (3 << 8)
#define ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL (4 << 8)
#define ACPI_VENDOR_SPECIFIC_SHIFT 12
#define ACPI_VENDOR_SPECIFIC_MASK (0xf << 12)
#define ACPI_BIOS_CAN_DETECT (1 << 16)
#define ACPI_DEPENDS_ON_VGA (1 << 17)
#define ACPI_PIPE_ID_SHIFT 18
#define ACPI_PIPE_ID_MASK (7 << 18)
#define ACPI_DEVICE_ID_SCHEME (1ULL << 31)
static u32 acpi_display_type(struct intel_connector *connector)
{
u32 display_type;
switch (connector->base.connector_type) {
case DRM_MODE_CONNECTOR_VGA:
case DRM_MODE_CONNECTOR_DVIA:
display_type = ACPI_DISPLAY_TYPE_VGA;
break;
case DRM_MODE_CONNECTOR_Composite:
case DRM_MODE_CONNECTOR_SVIDEO:
case DRM_MODE_CONNECTOR_Component:
case DRM_MODE_CONNECTOR_9PinDIN:
case DRM_MODE_CONNECTOR_TV:
display_type = ACPI_DISPLAY_TYPE_TV;
break;
case DRM_MODE_CONNECTOR_DVII:
case DRM_MODE_CONNECTOR_DVID:
case DRM_MODE_CONNECTOR_DisplayPort:
case DRM_MODE_CONNECTOR_HDMIA:
case DRM_MODE_CONNECTOR_HDMIB:
display_type = ACPI_DISPLAY_TYPE_EXTERNAL_DIGITAL;
break;
case DRM_MODE_CONNECTOR_LVDS:
case DRM_MODE_CONNECTOR_eDP:
case DRM_MODE_CONNECTOR_DSI:
display_type = ACPI_DISPLAY_TYPE_INTERNAL_DIGITAL;
break;
case DRM_MODE_CONNECTOR_Unknown:
case DRM_MODE_CONNECTOR_VIRTUAL:
display_type = ACPI_DISPLAY_TYPE_OTHER;
break;
default:
MISSING_CASE(connector->base.connector_type);
display_type = ACPI_DISPLAY_TYPE_OTHER;
break;
}
return display_type;
}
void intel_acpi_device_id_update(struct drm_i915_private *dev_priv)
{
struct drm_device *drm_dev = &dev_priv->drm;
struct intel_connector *connector;
struct drm_connector_list_iter conn_iter;
u8 display_index[16] = {};
/* Populate the ACPI IDs for all connectors for a given drm_device */
drm_connector_list_iter_begin(drm_dev, &conn_iter);
for_each_intel_connector_iter(connector, &conn_iter) {
u32 device_id, type;
device_id = acpi_display_type(connector);
/* Use display type specific display index. */
type = (device_id & ACPI_DISPLAY_TYPE_MASK)
>> ACPI_DISPLAY_TYPE_SHIFT;
device_id |= display_index[type]++ << ACPI_DISPLAY_INDEX_SHIFT;
connector->acpi_device_id = device_id;
}
drm_connector_list_iter_end(&conn_iter);
}
/* NOTE: The connector order must be final before this is called. */
void intel_acpi_assign_connector_fwnodes(struct drm_i915_private *i915)
{
struct drm_connector_list_iter conn_iter;
struct drm_device *drm_dev = &i915->drm;
struct fwnode_handle *fwnode = NULL;
struct drm_connector *connector;
struct acpi_device *adev;
drm_connector_list_iter_begin(drm_dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
/* Always getting the next, even when the last was not used. */
fwnode = device_get_next_child_node(drm_dev->dev, fwnode);
if (!fwnode)
break;
switch (connector->connector_type) {
case DRM_MODE_CONNECTOR_LVDS:
case DRM_MODE_CONNECTOR_eDP:
case DRM_MODE_CONNECTOR_DSI:
/*
* Integrated displays have a specific address 0x1f on
* most Intel platforms, but not on all of them.
*/
adev = acpi_find_child_device(ACPI_COMPANION(drm_dev->dev),
0x1f, 0);
if (adev) {
connector->fwnode =
fwnode_handle_get(acpi_fwnode_handle(adev));
break;
}
fallthrough;
default:
connector->fwnode = fwnode_handle_get(fwnode);
break;
}
}
drm_connector_list_iter_end(&conn_iter);
/*
* device_get_next_child_node() takes a reference on the fwnode, if
* we stopped iterating because we are out of connectors we need to
* put this, otherwise fwnode is NULL and the put is a no-op.
*/
fwnode_handle_put(fwnode);
}
void intel_acpi_video_register(struct drm_i915_private *i915)
{
struct drm_connector_list_iter conn_iter;
struct drm_connector *connector;
acpi_video_register();
/*
* If i915 is driving an internal panel without registering its native
* backlight handler try to register the acpi_video backlight.
* For panels not driven by i915 another GPU driver may still register
* a native backlight later and acpi_video_register_backlight() should
* only be called after any native backlights have been registered.
*/
drm_connector_list_iter_begin(&i915->drm, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
struct intel_panel *panel = &to_intel_connector(connector)->panel;
if (panel->backlight.funcs && !panel->backlight.device) {
acpi_video_register_backlight();
break;
}
}
drm_connector_list_iter_end(&conn_iter);
}