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mutter/src/backends/native/meta-monitor-manager-kms.c
Jonas Ådahl b69111d8e6 monitor-manager: Rename *Info structs to *Assignment 
MetaCrtcInfo and MetaOutputInfo did not represent information about
MetaCrtc and MetaOutput, but the result of the monitor configuration
assignment algorithm, thus rename it to MetaCrtcAssignment and
MetaOutputAssignment.

The purpose for this is to be able to introduce a struct that actually
carries information about the CRTCs and outputs, as retrieved from the
backend implementations.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1287
2020-06-10 18:54:50 +00:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2013 Red Hat Inc.
* Copyright (C) 2018 DisplayLink (UK) Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Author: Giovanni Campagna <gcampagn@redhat.com>
*/
/**
* SECTION:meta-monitor-manager-kms
* @title: MetaMonitorManagerKms
* @short_description: A subclass of #MetaMonitorManager using Linux DRM
*
* #MetaMonitorManagerKms is a subclass of #MetaMonitorManager which
* implements its functionality "natively": it uses the appropriate
* functions of the Linux DRM kernel module and using a udev client.
*
* See also #MetaMonitorManagerXrandr for an implementation using XRandR.
*/
#include "config.h"
#include "backends/native/meta-monitor-manager-kms.h"
#include <drm.h>
#include <errno.h>
#include <gudev/gudev.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <unistd.h>
#include "backends/meta-backend-private.h"
#include "backends/meta-crtc.h"
#include "backends/meta-monitor-config-manager.h"
#include "backends/meta-output.h"
#include "backends/native/meta-backend-native.h"
#include "backends/native/meta-crtc-kms.h"
#include "backends/native/meta-gpu-kms.h"
#include "backends/native/meta-kms-update.h"
#include "backends/native/meta-kms.h"
#include "backends/native/meta-launcher.h"
#include "backends/native/meta-output-kms.h"
#include "backends/native/meta-renderer-native.h"
#include "clutter/clutter.h"
#include "meta/main.h"
#include "meta/meta-x11-errors.h"
typedef struct
{
GSource source;
gpointer fd_tag;
MetaMonitorManagerKms *manager_kms;
} MetaKmsSource;
struct _MetaMonitorManagerKms
{
MetaMonitorManager parent_instance;
gulong kms_resources_changed_handler_id;
};
struct _MetaMonitorManagerKmsClass
{
MetaMonitorManagerClass parent_class;
};
static void
initable_iface_init (GInitableIface *initable_iface);
G_DEFINE_TYPE_WITH_CODE (MetaMonitorManagerKms, meta_monitor_manager_kms,
META_TYPE_MONITOR_MANAGER,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
initable_iface_init))
static GBytes *
meta_monitor_manager_kms_read_edid (MetaMonitorManager *manager,
MetaOutput *output)
{
return meta_output_kms_read_edid (output);
}
static void
meta_monitor_manager_kms_read_current_state (MetaMonitorManager *manager)
{
MetaMonitorManagerClass *parent_class =
META_MONITOR_MANAGER_CLASS (meta_monitor_manager_kms_parent_class);
MetaPowerSave power_save_mode;
power_save_mode = meta_monitor_manager_get_power_save_mode (manager);
if (power_save_mode != META_POWER_SAVE_ON)
meta_monitor_manager_power_save_mode_changed (manager,
META_POWER_SAVE_ON);
parent_class->read_current_state (manager);
}
static void
meta_monitor_manager_kms_set_power_save_mode (MetaMonitorManager *manager,
MetaPowerSave mode)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaBackendNative *backend_native = META_BACKEND_NATIVE (backend);
MetaKms *kms = meta_backend_native_get_kms (backend_native);
MetaKmsUpdate *kms_update;
uint64_t state;
GList *l;
g_autoptr (MetaKmsFeedback) kms_feedback = NULL;
switch (mode) {
case META_POWER_SAVE_ON:
state = DRM_MODE_DPMS_ON;
break;
case META_POWER_SAVE_STANDBY:
state = DRM_MODE_DPMS_STANDBY;
break;
case META_POWER_SAVE_SUSPEND:
state = DRM_MODE_DPMS_SUSPEND;
break;
case META_POWER_SAVE_OFF:
state = DRM_MODE_DPMS_OFF;
break;
default:
return;
}
kms_update = meta_kms_ensure_pending_update (kms);
for (l = meta_backend_get_gpus (backend); l; l = l->next)
{
MetaGpuKms *gpu_kms = l->data;
meta_gpu_kms_set_power_save_mode (gpu_kms, state, kms_update);
}
kms_feedback = meta_kms_post_pending_update_sync (kms);
if (meta_kms_feedback_get_result (kms_feedback) != META_KMS_FEEDBACK_PASSED)
{
g_warning ("Failed to set DPMS: %s",
meta_kms_feedback_get_error (kms_feedback)->message);
}
}
static void
meta_monitor_manager_kms_ensure_initial_config (MetaMonitorManager *manager)
{
MetaMonitorsConfig *config;
config = meta_monitor_manager_ensure_configured (manager);
meta_monitor_manager_update_logical_state (manager, config);
}
static void
apply_crtc_assignments (MetaMonitorManager *manager,
MetaCrtcAssignment **crtcs,
unsigned int n_crtcs,
MetaOutputAssignment **outputs,
unsigned int n_outputs)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
g_autoptr (GList) to_configure_outputs = NULL;
g_autoptr (GList) to_configure_crtcs = NULL;
unsigned i;
GList *gpus;
GList *l;
gpus = meta_backend_get_gpus (backend);
for (l = gpus; l; l = l->next)
{
MetaGpu *gpu = l->data;
GList *crtcs;
GList *outputs;
outputs = g_list_copy (meta_gpu_get_outputs (gpu));
to_configure_outputs = g_list_concat (to_configure_outputs, outputs);
crtcs = g_list_copy (meta_gpu_get_crtcs (gpu));
to_configure_crtcs = g_list_concat (to_configure_crtcs, crtcs);
}
for (i = 0; i < n_crtcs; i++)
{
MetaCrtcAssignment *crtc_assignment = crtcs[i];
MetaCrtc *crtc = crtc_assignment->crtc;
to_configure_crtcs = g_list_remove (to_configure_crtcs, crtc);
if (crtc_assignment->mode == NULL)
{
meta_crtc_unset_config (crtc);
}
else
{
unsigned int j;
meta_crtc_set_config (crtc,
&crtc_assignment->layout,
crtc_assignment->mode,
crtc_assignment->transform);
for (j = 0; j < crtc_assignment->outputs->len; j++)
{
MetaOutput *output = g_ptr_array_index (crtc_assignment->outputs,
j);
MetaOutputAssignment *output_assignment;
to_configure_outputs = g_list_remove (to_configure_outputs,
output);
output_assignment = meta_find_output_assignment (outputs,
n_outputs,
output);
meta_output_assign_crtc (output, crtc, output_assignment);
}
}
}
g_list_foreach (to_configure_crtcs,
(GFunc) meta_crtc_unset_config,
NULL);
g_list_foreach (to_configure_outputs,
(GFunc) meta_output_unassign_crtc,
NULL);
}
static void
update_screen_size (MetaMonitorManager *manager,
MetaMonitorsConfig *config)
{
GList *l;
int screen_width = 0;
int screen_height = 0;
for (l = config->logical_monitor_configs; l; l = l->next)
{
MetaLogicalMonitorConfig *logical_monitor_config = l->data;
int right_edge;
int bottom_edge;
right_edge = (logical_monitor_config->layout.width +
logical_monitor_config->layout.x);
if (right_edge > screen_width)
screen_width = right_edge;
bottom_edge = (logical_monitor_config->layout.height +
logical_monitor_config->layout.y);
if (bottom_edge > screen_height)
screen_height = bottom_edge;
}
manager->screen_width = screen_width;
manager->screen_height = screen_height;
}
static gboolean
meta_monitor_manager_kms_apply_monitors_config (MetaMonitorManager *manager,
MetaMonitorsConfig *config,
MetaMonitorsConfigMethod method,
GError **error)
{
GPtrArray *crtc_assignments;
GPtrArray *output_assignments;
if (!config)
{
manager->screen_width = META_MONITOR_MANAGER_MIN_SCREEN_WIDTH;
manager->screen_height = META_MONITOR_MANAGER_MIN_SCREEN_HEIGHT;
meta_monitor_manager_rebuild (manager, NULL);
return TRUE;
}
if (!meta_monitor_config_manager_assign (manager, config,
&crtc_assignments,
&output_assignments,
error))
return FALSE;
if (method == META_MONITORS_CONFIG_METHOD_VERIFY)
{
g_ptr_array_free (crtc_assignments, TRUE);
g_ptr_array_free (output_assignments, TRUE);
return TRUE;
}
apply_crtc_assignments (manager,
(MetaCrtcAssignment **) crtc_assignments->pdata,
crtc_assignments->len,
(MetaOutputAssignment **) output_assignments->pdata,
output_assignments->len);
g_ptr_array_free (crtc_assignments, TRUE);
g_ptr_array_free (output_assignments, TRUE);
update_screen_size (manager, config);
meta_monitor_manager_rebuild (manager, config);
return TRUE;
}
static void
meta_monitor_manager_kms_get_crtc_gamma (MetaMonitorManager *manager,
MetaCrtc *crtc,
gsize *size,
unsigned short **red,
unsigned short **green,
unsigned short **blue)
{
MetaKmsCrtc *kms_crtc;
const MetaKmsCrtcState *crtc_state;
kms_crtc = meta_crtc_kms_get_kms_crtc (crtc);
crtc_state = meta_kms_crtc_get_current_state (kms_crtc);
*size = crtc_state->gamma.size;
*red = g_memdup (crtc_state->gamma.red, *size * sizeof **red);
*green = g_memdup (crtc_state->gamma.green, *size * sizeof **green);
*blue = g_memdup (crtc_state->gamma.blue, *size * sizeof **blue);
}
static char *
generate_gamma_ramp_string (size_t size,
unsigned short *red,
unsigned short *green,
unsigned short *blue)
{
GString *string;
int color;
string = g_string_new ("[");
for (color = 0; color < 3; color++)
{
unsigned short **color_ptr;
char color_char;
size_t i;
switch (color)
{
case 0:
color_ptr = &red;
color_char = 'r';
break;
case 1:
color_ptr = &green;
color_char = 'g';
break;
case 2:
color_ptr = &blue;
color_char = 'b';
break;
}
g_string_append_printf (string, " %c: ", color_char);
for (i = 0; i < MIN (4, size); i++)
{
int j;
if (size > 4)
{
if (i == 2)
g_string_append (string, ",...");
if (i >= 2)
j = i + (size - 4);
else
j = i;
}
else
{
j = i;
}
g_string_append_printf (string, "%s%hu",
j == 0 ? "" : ",",
(*color_ptr)[i]);
}
}
g_string_append (string, " ]");
return g_string_free (string, FALSE);
}
static void
meta_monitor_manager_kms_set_crtc_gamma (MetaMonitorManager *manager,
MetaCrtc *crtc,
gsize size,
unsigned short *red,
unsigned short *green,
unsigned short *blue)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaBackendNative *backend_native = META_BACKEND_NATIVE (backend);
MetaKms *kms = meta_backend_native_get_kms (backend_native);
MetaKmsCrtc *kms_crtc;
g_autofree char *gamma_ramp_string = NULL;
MetaKmsUpdate *kms_update;
g_autoptr (MetaKmsFeedback) kms_feedback = NULL;
gamma_ramp_string = generate_gamma_ramp_string (size, red, green, blue);
g_debug ("Setting CRTC (%ld) gamma to %s",
meta_crtc_get_id (crtc), gamma_ramp_string);
kms_update = meta_kms_ensure_pending_update (kms);
kms_crtc = meta_crtc_kms_get_kms_crtc (crtc);
meta_kms_crtc_set_gamma (kms_crtc, kms_update,
size, red, green, blue);
kms_feedback = meta_kms_post_pending_update_sync (kms);
if (meta_kms_feedback_get_result (kms_feedback) != META_KMS_FEEDBACK_PASSED)
{
g_warning ("Failed to set CRTC gamma: %s",
meta_kms_feedback_get_error (kms_feedback)->message);
}
}
static void
handle_hotplug_event (MetaMonitorManager *manager)
{
meta_monitor_manager_read_current_state (manager);
meta_monitor_manager_on_hotplug (manager);
}
static void
on_kms_resources_changed (MetaKms *kms,
MetaMonitorManager *manager)
{
handle_hotplug_event (manager);
}
static void
meta_monitor_manager_kms_connect_hotplug_handler (MetaMonitorManagerKms *manager_kms)
{
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_kms);
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaBackendNative *backend_native = META_BACKEND_NATIVE (backend);
MetaKms *kms = meta_backend_native_get_kms (backend_native);
manager_kms->kms_resources_changed_handler_id =
g_signal_connect (kms, "resources-changed",
G_CALLBACK (on_kms_resources_changed), manager);
}
static void
meta_monitor_manager_kms_disconnect_hotplug_handler (MetaMonitorManagerKms *manager_kms)
{
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_kms);
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaBackendNative *backend_native = META_BACKEND_NATIVE (backend);
MetaKms *kms = meta_backend_native_get_kms (backend_native);
g_clear_signal_handler (&manager_kms->kms_resources_changed_handler_id, kms);
}
void
meta_monitor_manager_kms_pause (MetaMonitorManagerKms *manager_kms)
{
meta_monitor_manager_kms_disconnect_hotplug_handler (manager_kms);
}
void
meta_monitor_manager_kms_resume (MetaMonitorManagerKms *manager_kms)
{
meta_monitor_manager_kms_connect_hotplug_handler (manager_kms);
handle_hotplug_event (META_MONITOR_MANAGER (manager_kms));
}
static gboolean
meta_monitor_manager_kms_is_transform_handled (MetaMonitorManager *manager,
MetaCrtc *crtc,
MetaMonitorTransform transform)
{
return meta_crtc_kms_is_transform_handled (crtc, transform);
}
static float
meta_monitor_manager_kms_calculate_monitor_mode_scale (MetaMonitorManager *manager,
MetaMonitor *monitor,
MetaMonitorMode *monitor_mode)
{
return meta_monitor_calculate_mode_scale (monitor, monitor_mode);
}
static float *
meta_monitor_manager_kms_calculate_supported_scales (MetaMonitorManager *manager,
MetaLogicalMonitorLayoutMode layout_mode,
MetaMonitor *monitor,
MetaMonitorMode *monitor_mode,
int *n_supported_scales)
{
MetaMonitorScalesConstraint constraints =
META_MONITOR_SCALES_CONSTRAINT_NONE;
switch (layout_mode)
{
case META_LOGICAL_MONITOR_LAYOUT_MODE_LOGICAL:
break;
case META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL:
constraints |= META_MONITOR_SCALES_CONSTRAINT_NO_FRAC;
break;
}
return meta_monitor_calculate_supported_scales (monitor, monitor_mode,
constraints,
n_supported_scales);
}
static MetaMonitorManagerCapability
meta_monitor_manager_kms_get_capabilities (MetaMonitorManager *manager)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaSettings *settings = meta_backend_get_settings (backend);
MetaMonitorManagerCapability capabilities =
META_MONITOR_MANAGER_CAPABILITY_NONE;
if (meta_settings_is_experimental_feature_enabled (
settings,
META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER))
capabilities |= META_MONITOR_MANAGER_CAPABILITY_LAYOUT_MODE;
return capabilities;
}
static gboolean
meta_monitor_manager_kms_get_max_screen_size (MetaMonitorManager *manager,
int *max_width,
int *max_height)
{
return FALSE;
}
static MetaLogicalMonitorLayoutMode
meta_monitor_manager_kms_get_default_layout_mode (MetaMonitorManager *manager)
{
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
MetaSettings *settings = meta_backend_get_settings (backend);
if (meta_settings_is_experimental_feature_enabled (
settings,
META_EXPERIMENTAL_FEATURE_SCALE_MONITOR_FRAMEBUFFER))
return META_LOGICAL_MONITOR_LAYOUT_MODE_LOGICAL;
else
return META_LOGICAL_MONITOR_LAYOUT_MODE_PHYSICAL;
}
static gboolean
meta_monitor_manager_kms_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaMonitorManagerKms *manager_kms = META_MONITOR_MANAGER_KMS (initable);
MetaMonitorManager *manager = META_MONITOR_MANAGER (manager_kms);
MetaBackend *backend = meta_monitor_manager_get_backend (manager);
gboolean can_have_outputs;
GList *l;
meta_monitor_manager_kms_connect_hotplug_handler (manager_kms);
can_have_outputs = FALSE;
for (l = meta_backend_get_gpus (backend); l; l = l->next)
{
MetaGpuKms *gpu_kms = l->data;
if (meta_gpu_kms_can_have_outputs (gpu_kms))
{
can_have_outputs = TRUE;
break;
}
}
if (!can_have_outputs)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
"No GPUs with outputs found");
return FALSE;
}
return TRUE;
}
static void
initable_iface_init (GInitableIface *initable_iface)
{
initable_iface->init = meta_monitor_manager_kms_initable_init;
}
static void
meta_monitor_manager_kms_init (MetaMonitorManagerKms *manager_kms)
{
}
static void
meta_monitor_manager_kms_class_init (MetaMonitorManagerKmsClass *klass)
{
MetaMonitorManagerClass *manager_class = META_MONITOR_MANAGER_CLASS (klass);
manager_class->read_edid = meta_monitor_manager_kms_read_edid;
manager_class->read_current_state = meta_monitor_manager_kms_read_current_state;
manager_class->ensure_initial_config = meta_monitor_manager_kms_ensure_initial_config;
manager_class->apply_monitors_config = meta_monitor_manager_kms_apply_monitors_config;
manager_class->set_power_save_mode = meta_monitor_manager_kms_set_power_save_mode;
manager_class->get_crtc_gamma = meta_monitor_manager_kms_get_crtc_gamma;
manager_class->set_crtc_gamma = meta_monitor_manager_kms_set_crtc_gamma;
manager_class->is_transform_handled = meta_monitor_manager_kms_is_transform_handled;
manager_class->calculate_monitor_mode_scale = meta_monitor_manager_kms_calculate_monitor_mode_scale;
manager_class->calculate_supported_scales = meta_monitor_manager_kms_calculate_supported_scales;
manager_class->get_capabilities = meta_monitor_manager_kms_get_capabilities;
manager_class->get_max_screen_size = meta_monitor_manager_kms_get_max_screen_size;
manager_class->get_default_layout_mode = meta_monitor_manager_kms_get_default_layout_mode;
}
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