0d69704ae3
For optimus and powerxpress muxless we really want the GPU driver deciding when to power up/down the GPU, not userspace. This adds the ability for a driver to dynamically power up/down the GPU and remove the switcheroo from controlling it, the switcheroo reports the dynamic state to userspace also. It also adds 2 power domains, one for machine where the power switch is controlled outside the GPU D3 state, so the powerdown ordering is done correctly, and the second for the hdmi audio device to make sure it can resume for PCI config space accesses. v1.1: fix build with switcheroo off v2: add power domain support for radeon and v1 nvidia dsms v2.1: fix typo in off case v3: add audio power domain for hdmi audio + misc audio fixes v4: use PCI_SLOT macro, drop power reference on hdmi audio resume failure also. Signed-off-by: Dave Airlie <airlied@redhat.com>
98 lines
2.4 KiB
C
98 lines
2.4 KiB
C
#include <linux/vgaarb.h>
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#include <linux/vga_switcheroo.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc_helper.h>
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#include "nouveau_drm.h"
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#include "nouveau_acpi.h"
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#include "nouveau_fbcon.h"
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#include "nouveau_vga.h"
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static unsigned int
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nouveau_vga_set_decode(void *priv, bool state)
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{
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struct nouveau_device *device = nouveau_dev(priv);
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if (device->chipset >= 0x40)
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nv_wr32(device, 0x088054, state);
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else
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nv_wr32(device, 0x001854, state);
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if (state)
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return VGA_RSRC_LEGACY_IO | VGA_RSRC_LEGACY_MEM |
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VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
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else
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return VGA_RSRC_NORMAL_IO | VGA_RSRC_NORMAL_MEM;
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}
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static void
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nouveau_switcheroo_set_state(struct pci_dev *pdev,
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enum vga_switcheroo_state state)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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if (state == VGA_SWITCHEROO_ON) {
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printk(KERN_ERR "VGA switcheroo: switched nouveau on\n");
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dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
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nouveau_pmops_resume(&pdev->dev);
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drm_kms_helper_poll_enable(dev);
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dev->switch_power_state = DRM_SWITCH_POWER_ON;
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} else {
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printk(KERN_ERR "VGA switcheroo: switched nouveau off\n");
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dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
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drm_kms_helper_poll_disable(dev);
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nouveau_switcheroo_optimus_dsm();
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nouveau_pmops_suspend(&pdev->dev);
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dev->switch_power_state = DRM_SWITCH_POWER_OFF;
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}
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}
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static void
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nouveau_switcheroo_reprobe(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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nouveau_fbcon_output_poll_changed(dev);
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}
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static bool
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nouveau_switcheroo_can_switch(struct pci_dev *pdev)
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{
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struct drm_device *dev = pci_get_drvdata(pdev);
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bool can_switch;
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spin_lock(&dev->count_lock);
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can_switch = (dev->open_count == 0);
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spin_unlock(&dev->count_lock);
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return can_switch;
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}
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static const struct vga_switcheroo_client_ops
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nouveau_switcheroo_ops = {
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.set_gpu_state = nouveau_switcheroo_set_state,
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.reprobe = nouveau_switcheroo_reprobe,
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.can_switch = nouveau_switcheroo_can_switch,
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};
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void
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nouveau_vga_init(struct nouveau_drm *drm)
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{
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struct drm_device *dev = drm->dev;
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vga_client_register(dev->pdev, dev, NULL, nouveau_vga_set_decode);
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vga_switcheroo_register_client(dev->pdev, &nouveau_switcheroo_ops, false);
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}
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void
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nouveau_vga_fini(struct nouveau_drm *drm)
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{
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struct drm_device *dev = drm->dev;
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vga_switcheroo_unregister_client(dev->pdev);
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vga_client_register(dev->pdev, NULL, NULL, NULL);
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}
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void
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nouveau_vga_lastclose(struct drm_device *dev)
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{
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vga_switcheroo_process_delayed_switch();
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}
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