From 63bf8301aac492d4c5fdf7b0ec42b142c05080e3 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Fri, 4 Oct 2019 15:20:18 +0300 Subject: drm/i915: split out i915_switcheroo.[ch] from i915_drv.c MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Split out code related to vga switcheroo register/unregister and state handling from i915_drv.c into new i915_switcheroo.[ch] files. It's a bit difficult to draw the line how much to move to the new file from i915_drv.c, but it seemed to me keeping i915_suspend_switcheroo() and i915_resume_switcheroo() in place was the cleanest. No functional changes. Cc: Ville Syrjälä Cc: Chris Wilson Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/20191004122019.12009-2-jani.nikula@intel.com --- drivers/gpu/drm/i915/i915_switcheroo.c | 67 ++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 drivers/gpu/drm/i915/i915_switcheroo.c (limited to 'drivers/gpu/drm/i915/i915_switcheroo.c') diff --git a/drivers/gpu/drm/i915/i915_switcheroo.c b/drivers/gpu/drm/i915/i915_switcheroo.c new file mode 100644 index 000000000000..39c79e1c5b52 --- /dev/null +++ b/drivers/gpu/drm/i915/i915_switcheroo.c @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2019 Intel Corporation + */ + +#include + +#include "i915_drv.h" +#include "i915_switcheroo.h" + +static void i915_switcheroo_set_state(struct pci_dev *pdev, + enum vga_switcheroo_state state) +{ + struct drm_i915_private *i915 = pdev_to_i915(pdev); + pm_message_t pmm = { .event = PM_EVENT_SUSPEND }; + + if (!i915) { + dev_err(&pdev->dev, "DRM not initialized, aborting switch.\n"); + return; + } + + if (state == VGA_SWITCHEROO_ON) { + pr_info("switched on\n"); + i915->drm.switch_power_state = DRM_SWITCH_POWER_CHANGING; + /* i915 resume handler doesn't set to D0 */ + pci_set_power_state(pdev, PCI_D0); + i915_resume_switcheroo(i915); + i915->drm.switch_power_state = DRM_SWITCH_POWER_ON; + } else { + pr_info("switched off\n"); + i915->drm.switch_power_state = DRM_SWITCH_POWER_CHANGING; + i915_suspend_switcheroo(i915, pmm); + i915->drm.switch_power_state = DRM_SWITCH_POWER_OFF; + } +} + +static bool i915_switcheroo_can_switch(struct pci_dev *pdev) +{ + struct drm_i915_private *i915 = pdev_to_i915(pdev); + + /* + * FIXME: open_count is protected by drm_global_mutex but that would lead to + * locking inversion with the driver load path. And the access here is + * completely racy anyway. So don't bother with locking for now. + */ + return i915 && i915->drm.open_count == 0; +} + +static const struct vga_switcheroo_client_ops i915_switcheroo_ops = { + .set_gpu_state = i915_switcheroo_set_state, + .reprobe = NULL, + .can_switch = i915_switcheroo_can_switch, +}; + +int i915_switcheroo_register(struct drm_i915_private *i915) +{ + struct pci_dev *pdev = i915->drm.pdev; + + return vga_switcheroo_register_client(pdev, &i915_switcheroo_ops, false); +} + +void i915_switcheroo_unregister(struct drm_i915_private *i915) +{ + struct pci_dev *pdev = i915->drm.pdev; + + vga_switcheroo_unregister_client(pdev); +} -- cgit v1.2.3-59-g8ed1b