diff options
Diffstat (limited to 'drivers/gpu/drm/drm_client_modeset.c')
| -rw-r--r-- | drivers/gpu/drm/drm_client_modeset.c | 144 |
1 files changed, 126 insertions, 18 deletions
diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c index 56d36779d213..e6346a67cd98 100644 --- a/drivers/gpu/drm/drm_client_modeset.c +++ b/drivers/gpu/drm/drm_client_modeset.c @@ -7,9 +7,11 @@ * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> */ +#include "drm/drm_modeset_lock.h" #include <linux/module.h> #include <linux/mutex.h> #include <linux/slab.h> +#include <linux/string_helpers.h> #include <drm/drm_atomic.h> #include <drm/drm_client.h> @@ -115,6 +117,33 @@ drm_client_find_modeset(struct drm_client_dev *client, struct drm_crtc *crtc) } static struct drm_display_mode * +drm_connector_get_tiled_mode(struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + list_for_each_entry(mode, &connector->modes, head) { + if (mode->hdisplay == connector->tile_h_size && + mode->vdisplay == connector->tile_v_size) + return mode; + } + return NULL; +} + +static struct drm_display_mode * +drm_connector_fallback_non_tiled_mode(struct drm_connector *connector) +{ + struct drm_display_mode *mode; + + list_for_each_entry(mode, &connector->modes, head) { + if (mode->hdisplay == connector->tile_h_size && + mode->vdisplay == connector->tile_v_size) + continue; + return mode; + } + return NULL; +} + +static struct drm_display_mode * drm_connector_has_preferred_mode(struct drm_connector *connector, int width, int height) { struct drm_display_mode *mode; @@ -159,7 +188,7 @@ again: continue; if (cmdline_mode->refresh_specified) { - if (mode->vrefresh != cmdline_mode->refresh) + if (drm_mode_vrefresh(mode) != cmdline_mode->refresh) continue; } @@ -213,7 +242,7 @@ static void drm_client_connectors_enabled(struct drm_connector **connectors, connector = connectors[i]; enabled[i] = drm_connector_enabled(connector, true); DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, - connector->display_info.non_desktop ? "non desktop" : enabled[i] ? "yes" : "no"); + connector->display_info.non_desktop ? "non desktop" : str_yes_no(enabled[i])); any_enabled |= enabled[i]; } @@ -348,8 +377,15 @@ static bool drm_client_target_preferred(struct drm_connector **connectors, struct drm_connector *connector; u64 conn_configured = 0; int tile_pass = 0; + int num_tiled_conns = 0; int i; + for (i = 0; i < connector_count; i++) { + if (connectors[i]->has_tile && + connectors[i]->status == connector_status_connected) + num_tiled_conns++; + } + retry: for (i = 0; i < connector_count; i++) { connector = connectors[i]; @@ -399,6 +435,28 @@ retry: list_for_each_entry(modes[i], &connector->modes, head) break; } + /* + * In case of tiled mode if all tiles not present fallback to + * first available non tiled mode. + * After all tiles are present, try to find the tiled mode + * for all and if tiled mode not present due to fbcon size + * limitations, use first non tiled mode only for + * tile 0,0 and set to no mode for all other tiles. + */ + if (connector->has_tile) { + if (num_tiled_conns < + connector->num_h_tile * connector->num_v_tile || + (connector->tile_h_loc == 0 && + connector->tile_v_loc == 0 && + !drm_connector_get_tiled_mode(connector))) { + DRM_DEBUG_KMS("Falling back to non tiled mode on Connector %d\n", + connector->base.id); + modes[i] = drm_connector_fallback_non_tiled_mode(connector); + } else { + modes[i] = drm_connector_get_tiled_mode(connector); + } + } + DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : "none"); conn_configured |= BIT_ULL(i); @@ -415,9 +473,8 @@ static bool connector_has_possible_crtc(struct drm_connector *connector, struct drm_crtc *crtc) { struct drm_encoder *encoder; - int i; - drm_connector_for_each_possible_encoder(connector, encoder, i) { + drm_connector_for_each_possible_encoder(connector, encoder) { if (encoder->possible_crtcs & drm_crtc_mask(crtc)) return true; } @@ -508,7 +565,7 @@ static bool drm_client_firmware_config(struct drm_client_dev *client, struct drm_client_offset *offsets, bool *enabled, int width, int height) { - unsigned int count = min_t(unsigned int, connector_count, BITS_PER_LONG); + const int count = min_t(unsigned int, connector_count, BITS_PER_LONG); unsigned long conn_configured, conn_seq, mask; struct drm_device *dev = client->dev; int i, j; @@ -516,11 +573,15 @@ static bool drm_client_firmware_config(struct drm_client_dev *client, bool fallback = true, ret = true; int num_connectors_enabled = 0; int num_connectors_detected = 0; + int num_tiled_conns = 0; struct drm_modeset_acquire_ctx ctx; if (!drm_drv_uses_atomic_modeset(dev)) return false; + if (WARN_ON(count <= 0)) + return false; + save_enabled = kcalloc(count, sizeof(bool), GFP_KERNEL); if (!save_enabled) return false; @@ -533,6 +594,11 @@ static bool drm_client_firmware_config(struct drm_client_dev *client, memcpy(save_enabled, enabled, count); mask = GENMASK(count - 1, 0); conn_configured = 0; + for (i = 0; i < count; i++) { + if (connectors[i]->has_tile && + connectors[i]->status == connector_status_connected) + num_tiled_conns++; + } retry: conn_seq = conn_configured; for (i = 0; i < count; i++) { @@ -632,6 +698,16 @@ retry: connector->name); modes[i] = &connector->state->crtc->mode; } + /* + * In case of tiled modes, if all tiles are not present + * then fallback to a non tiled mode. + */ + if (connector->has_tile && + num_tiled_conns < connector->num_h_tile * connector->num_v_tile) { + DRM_DEBUG_KMS("Falling back to non tiled mode on Connector %d\n", + connector->base.id); + modes[i] = drm_connector_fallback_non_tiled_mode(connector); + } crtcs[i] = new_crtc; DRM_DEBUG_KMS("connector %s on [CRTC:%d:%s]: %dx%d%s\n", @@ -859,7 +935,7 @@ bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation) * simple XOR between the two handle the addition nicely. */ cmdline = &connector->cmdline_mode; - if (cmdline->specified) { + if (cmdline->specified && cmdline->rotation_reflection) { unsigned int cmdline_rest, panel_rest; unsigned int cmdline_rot, panel_rot; unsigned int sum_rot, sum_rest; @@ -880,7 +956,8 @@ bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation) * depending on the hardware this may require the framebuffer * to be in a specific tiling format. */ - if ((*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_180 || + if (((*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_0 && + (*rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_180) || !plane->rotation_property) return false; @@ -894,7 +971,7 @@ bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation) } EXPORT_SYMBOL(drm_client_rotation); -static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool active) +static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool active, bool check) { struct drm_device *dev = client->dev; struct drm_plane *plane; @@ -961,7 +1038,10 @@ retry: } } - ret = drm_atomic_commit(state); + if (check) + ret = drm_atomic_check_only(state); + else + ret = drm_atomic_commit(state); out_state: if (ret == -EDEADLK) @@ -1023,29 +1103,55 @@ out: } /** - * drm_client_modeset_commit_force() - Force commit CRTC configuration + * drm_client_modeset_check() - Check modeset configuration + * @client: DRM client + * + * Check modeset configuration. + * + * Returns: + * Zero on success or negative error code on failure. + */ +int drm_client_modeset_check(struct drm_client_dev *client) +{ + int ret; + + if (!drm_drv_uses_atomic_modeset(client->dev)) + return 0; + + mutex_lock(&client->modeset_mutex); + ret = drm_client_modeset_commit_atomic(client, true, true); + mutex_unlock(&client->modeset_mutex); + + return ret; +} +EXPORT_SYMBOL(drm_client_modeset_check); + +/** + * drm_client_modeset_commit_locked() - Force commit CRTC configuration * @client: DRM client * - * Commit modeset configuration to crtcs without checking if there is a DRM master. + * Commit modeset configuration to crtcs without checking if there is a DRM + * master. The assumption is that the caller already holds an internal DRM + * master reference acquired with drm_master_internal_acquire(). * * Returns: * Zero on success or negative error code on failure. */ -int drm_client_modeset_commit_force(struct drm_client_dev *client) +int drm_client_modeset_commit_locked(struct drm_client_dev *client) { struct drm_device *dev = client->dev; int ret; mutex_lock(&client->modeset_mutex); if (drm_drv_uses_atomic_modeset(dev)) - ret = drm_client_modeset_commit_atomic(client, true); + ret = drm_client_modeset_commit_atomic(client, true, false); else ret = drm_client_modeset_commit_legacy(client); mutex_unlock(&client->modeset_mutex); return ret; } -EXPORT_SYMBOL(drm_client_modeset_commit_force); +EXPORT_SYMBOL(drm_client_modeset_commit_locked); /** * drm_client_modeset_commit() - Commit CRTC configuration @@ -1064,7 +1170,7 @@ int drm_client_modeset_commit(struct drm_client_dev *client) if (!drm_master_internal_acquire(dev)) return -EBUSY; - ret = drm_client_modeset_commit_force(client); + ret = drm_client_modeset_commit_locked(client); drm_master_internal_release(dev); @@ -1077,9 +1183,11 @@ static void drm_client_modeset_dpms_legacy(struct drm_client_dev *client, int dp struct drm_device *dev = client->dev; struct drm_connector *connector; struct drm_mode_set *modeset; + struct drm_modeset_acquire_ctx ctx; int j; + int ret; - drm_modeset_lock_all(dev); + DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); drm_client_for_each_modeset(modeset, client) { if (!modeset->crtc->enabled) continue; @@ -1091,7 +1199,7 @@ static void drm_client_modeset_dpms_legacy(struct drm_client_dev *client, int dp dev->mode_config.dpms_property, dpms_mode); } } - drm_modeset_unlock_all(dev); + DRM_MODESET_LOCK_ALL_END(dev, ctx, ret); } /** @@ -1114,7 +1222,7 @@ int drm_client_modeset_dpms(struct drm_client_dev *client, int mode) mutex_lock(&client->modeset_mutex); if (drm_drv_uses_atomic_modeset(dev)) - ret = drm_client_modeset_commit_atomic(client, mode == DRM_MODE_DPMS_ON); + ret = drm_client_modeset_commit_atomic(client, mode == DRM_MODE_DPMS_ON, false); else drm_client_modeset_dpms_legacy(client, mode); mutex_unlock(&client->modeset_mutex); |