path: root/drivers/gpu/drm/i915/display/intel_display_debugfs.c

// SPDX-License-Identifier: MIT
/*
 * Copyright © 2020 Intel Corporation
 */

#include <linux/string_helpers.h>

#include <drm/drm_debugfs.h>
#include <drm/drm_edid.h>
#include <drm/drm_fourcc.h>

#include "hsw_ips.h"
#include "i915_debugfs.h"
#include "i915_irq.h"
#include "i915_reg.h"
#include "intel_alpm.h"
#include "intel_crtc.h"
#include "intel_de.h"
#include "intel_crtc_state_dump.h"
#include "intel_display_debugfs.h"
#include "intel_display_debugfs_params.h"
#include "intel_display_power.h"
#include "intel_display_power_well.h"
#include "intel_display_types.h"
#include "intel_dmc.h"
#include "intel_dp.h"
#include "intel_dp_link_training.h"
#include "intel_dp_mst.h"
#include "intel_drrs.h"
#include "intel_fbc.h"
#include "intel_fbdev.h"
#include "intel_hdcp.h"
#include "intel_hdmi.h"
#include "intel_hotplug.h"
#include "intel_panel.h"
#include "intel_pps.h"
#include "intel_psr.h"
#include "intel_psr_regs.h"
#include "intel_vdsc.h"
#include "intel_wm.h"

static inline struct drm_i915_private *node_to_i915(struct drm_info_node *node)
{
	return to_i915(node->minor->dev);
}

static int i915_frontbuffer_tracking(struct seq_file *m, void *unused)
{
	struct drm_i915_private *dev_priv = node_to_i915(m->private);

	spin_lock(&dev_priv->display.fb_tracking.lock);

	seq_printf(m, "FB tracking busy bits: 0x%08x\n",
		   dev_priv->display.fb_tracking.busy_bits);

	seq_printf(m, "FB tracking flip bits: 0x%08x\n",
		   dev_priv->display.fb_tracking.flip_bits);

	spin_unlock(&dev_priv->display.fb_tracking.lock);

	return 0;
}

static int i915_sr_status(struct seq_file *m, void *unused)
{
	struct drm_i915_private *dev_priv = node_to_i915(m->private);
	intel_wakeref_t wakeref;
	bool sr_enabled = false;

	wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);

	if (DISPLAY_VER(dev_priv) >= 9)
		/* no global SR status; inspect per-plane WM */;
	else if (HAS_PCH_SPLIT(dev_priv))
		sr_enabled = intel_de_read(dev_priv, WM1_LP_ILK) & WM_LP_ENABLE;
	else if (IS_I965GM(dev_priv) || IS_G4X(dev_priv) ||
		 IS_I945G(dev_priv) || IS_I945GM(dev_priv))
		sr_enabled = intel_de_read(dev_priv, FW_BLC_SELF) & FW_BLC_SELF_EN;
	else if (IS_I915GM(dev_priv))
		sr_enabled = intel_de_read(dev_priv, INSTPM) & INSTPM_SELF_EN;
	else if (IS_PINEVIEW(dev_priv))
		sr_enabled = intel_de_read(dev_priv, DSPFW3(dev_priv)) & PINEVIEW_SELF_REFRESH_EN;
	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
		sr_enabled = intel_de_read(dev_priv, FW_BLC_SELF_VLV) & FW_CSPWRDWNEN;

	intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);

	seq_printf(m, "self-refresh: %s\n", str_enabled_disabled(sr_enabled));

	return 0;
}

static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
{
	struct drm_i915_private *dev_priv = node_to_i915(m->private);
	struct intel_framebuffer *fbdev_fb = NULL;
	struct drm_framebuffer *drm_fb;

#ifdef CONFIG_DRM_FBDEV_EMULATION
	fbdev_fb = intel_fbdev_framebuffer(dev_priv->display.fbdev.fbdev);
	if (fbdev_fb) {
		seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
			   fbdev_fb->base.width,
			   fbdev_fb->base.height,
			   fbdev_fb->base.format->depth,
			   fbdev_fb->base.format->cpp[0] * 8,
			   fbdev_fb->base.modifier,
			   drm_framebuffer_read_refcount(&fbdev_fb->base));
		i915_debugfs_describe_obj(m, intel_fb_obj(&fbdev_fb->base));
		seq_putc(m, '\n');
	}
#endif

	mutex_lock(&dev_priv->drm.mode_config.fb_lock);
	drm_for_each_fb(drm_fb, &dev_priv->drm) {
		struct intel_framebuffer *fb = to_intel_framebuffer(drm_fb);
		if (fb == fbdev_fb)
			continue;

		seq_printf(m, "user size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ",
			   fb->base.width,
			   fb->base.height,
			   fb->base.format->depth,
			   fb->base.format->cpp[0] * 8,
			   fb->base.modifier,
			   drm_framebuffer_read_refcount(&fb->base));
		i915_debugfs_describe_obj(m, intel_fb_obj(&fb->base));
		seq_putc(m, '\n');
	}
	mutex_unlock(&dev_priv->drm.mode_config.fb_lock);

	return 0;
}

static int i915_power_domain_info(struct seq_file *m, void *unused)
{
	struct drm_i915_private *i915 = node_to_i915(m->private);

	intel_display_power_debug(i915, m);

	return 0;
}

static void intel_seq_print_mode(struct seq_file *m, int tabs,
				 const struct drm_display_mode *mode)
{
	int i;

	for (i = 0; i < tabs; i++)
		seq_putc(m, '\t');

	seq_printf(m, DRM_MODE_FMT "\n", DRM_MODE_ARG(mode));
}

static void intel_encoder_info(struct seq_file *m,
			       struct intel_crtc *crtc,
			       struct intel_encoder *encoder)
{
	struct drm_i915_private *dev_priv = node_to_i915(m->private);
	struct drm_connector_list_iter conn_iter;
	stru