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authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 11:44:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 11:44:24 -0700
commit2f34c1231bfc9f2550f934acb268ac7315fb3837 (patch)
treeff8114b3b4ec4723a11b041c6b74c389e9f0eeb9 /drivers/platform
parenta3719f34fdb664ffcfaec2160ef20fca7becf2ee (diff)
parent8b03d1ed2c43a2ba5ef3381322ee4515b97381bf (diff)
downloadlinux-2f34c1231bfc9f2550f934acb268ac7315fb3837.tar.bz2
Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux
Pull drm u pdates from Dave Airlie: "This is the main drm pull request for v4.12. Apart from two fixes pulls, everything should have been in drm-next for at least 2 weeks. The biggest thing in here is AMD released the public headers for their upcoming VEGA GPUs. These as always are quite a sizeable chunk of header files. They've also added initial non-display support for those GPUs, though they aren't available in production yet. Otherwise it's pretty much normal. New bridge drivers: - megachips-stdpxxxx-ge-b850v3-fw LVDS->DP++ - generic LVDS bridge support. Core: - Displayport link train failure reporting to userspace - debugfs interface cleaned up - subsystem TODO in kerneldoc now - Extended fbdev support (flipping and vblank wait) - drm_platform removed - EDP CRC support in helper - HF-VSDB SCDC support in EDID parser - Lots of code cleanups and header extraction - Thunderbolt external GPU awareness - Atomic helper improvements - Documentation improvements panel: - Sitronix and Samsung new panel support amdgpu: - Preliminary vega10 support - Multi-level page table support - GPU sensor support for userspace - PRT support for sparse buffers - SR-IOV improvements - Non-contig VRAM CPU mapping i915: - Atomic modesetting enabled by default on Gen5+ - LSPCON improvements - Atomic state handling for cdclk - GPU reset improvements - In-kernel unit tests - Geminilake improvements and color manager support - Designware i2c fixes - vblank evasion improvements - Hotplug safe connector iterators - GVT scheduler QoS support - GVT Kabylake support nouveau: - Acceleration support for Pascal (GP10x). - Rearchitecture of code handling proprietary signed firmware - Fix GTX 970 with odd MMU configuration - GP10B support - GP107 acceleration support vmwgfx: - Atomic modesetting support for vmwgfx omapdrm: - Support for render nodes - Refactor omapdss code - Fix some probe ordering issues - Fix too dark RGB565 rendering sunxi: - prelim rework for multiple pipes. mali-dp: - Color management support - Plane scaling - Power management improvements imx-drm: - Prefetch Resolve Engine/Gasket on i.MX6QP - Deferred plane disabling - Separate alpha support mediatek: - Mediatek SoC MT2701 support rcar-du: - Gen3 HDMI support msm: - 4k support for newer chips - OPP bindings for gpu - prep work for per-process pagetables vc4: - HDMI audio support - fixes qxl: - minor fixes. dw-hdmi: - PHY improvements - CSC fixes - Amlogic GX SoC support" * tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux: (1778 commits) drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr() drm/nouveau/kms: Increase max retries in scanout position queries. drm/nouveau/bios/bitP: check that table is long enough for optional pointers drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine drm: mali-dp: use div_u64 for expensive 64-bit divisions drm/i915: Confirm the request is still active before adding it to the await drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio drm/i915/selftests: Allocate inode/file dynamically drm/i915: Fix system hang with EI UP masked on Haswell drm/i915: checking for NULL instead of IS_ERR() in mock selftests drm/i915: Perform link quality check unconditionally during long pulse drm/i915: Fix use after free in lpe_audio_platdev_destroy() drm/i915: Use the right mapping_gfp_mask for final shmem allocation drm/i915: Make legacy cursor updates more unsynced drm/i915: Apply a cond_resched() to the saturated signaler drm/i915: Park the signaler before sleeping drm: mali-dp: Check the mclk rate and allow up/down scaling drm: mali-dp: Enable image enhancement when scaling drm: mali-dp: Add plane upscaling support ...
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/apple-gmux.c31
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
index a66be137324c..623d322447a2 100644
--- a/drivers/platform/x86/apple-gmux.c
+++ b/drivers/platform/x86/apple-gmux.c
@@ -60,6 +60,7 @@ struct apple_gmux_data {
/* switcheroo data */
acpi_handle dhandle;
int gpe;
+ bool external_switchable;
enum vga_switcheroo_client_id switch_state_display;
enum vga_switcheroo_client_id switch_state_ddc;
enum vga_switcheroo_client_id switch_state_external;
@@ -358,6 +359,19 @@ static const struct backlight_ops gmux_bl_ops = {
* ports while the discrete GPU is asleep, but currently we do not make use
* of this feature.
*
+ * Our switching policy for the external port is that on those generations
+ * which are able to switch it fully, the port is switched together with the
+ * panel when IGD / DIS commands are issued to vga_switcheroo. It is thus
+ * possible to drive e.g. a beamer on battery power with the integrated GPU.
+ * The user may manually switch to the discrete GPU if more performance is
+ * needed.
+ *
+ * On all newer generations, the external port can only be driven by the
+ * discrete GPU. If a display is plugged in while the panel is switched to
+ * the integrated GPU, *both* GPUs will be in use for maximum performance.
+ * To decrease power consumption, the user may manually switch to the
+ * discrete GPU, thereby suspending the integrated GPU.
+ *
* gmux' initial switch state on bootup is user configurable via the EFI
* variable ``gpu-power-prefs-fa4ce28d-b62f-4c99-9cc3-6815686e30f9`` (5th byte,
* 1 = IGD, 0 = DIS). Based on this setting, the EFI firmware tells gmux to
@@ -414,7 +428,8 @@ static int gmux_switchto(enum vga_switcheroo_client_id id)
{
apple_gmux_data->switch_state_ddc = id;
apple_gmux_data->switch_state_display = id;
- apple_gmux_data->switch_state_external = id;
+ if (apple_gmux_data->external_switchable)
+ apple_gmux_data->switch_state_external = id;
gmux_write_switch_state(apple_gmux_data);
@@ -601,6 +616,11 @@ static struct pci_dev *gmux_get_io_pdev(void)
return NULL;
}
+static int is_thunderbolt(struct device *dev, void *data)
+{
+ return to_pci_dev(dev)->is_thunderbolt;
+}
+
static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
{
struct apple_gmux_data *gmux_data;
@@ -755,6 +775,15 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
gmux_data->gpe = -1;
}
+ /*
+ * If Thunderbolt is present, the external DP port is not fully
+ * switchable. Force its AUX channel to the discrete GPU.
+ */
+ gmux_data->external_switchable =
+ !bus_for_each_dev(&pci_bus_type, NULL, NULL, is_thunderbolt);
+ if (!gmux_data->external_switchable)
+ gmux_write8(gmux_data, GMUX_PORT_SWITCH_EXTERNAL, 3);
+
apple_gmux_data = gmux_data;
init_completion(&gmux_data->powerchange_done);
gmux_enable_interrupts(gmux_data);