1 // SPDX-License-Identifier: GPL-2.0-only
2 /**************************************************************************
3 * Copyright (c) 2007-2011, Intel Corporation.
6 **************************************************************************/
8 #include <drm/drm_framebuffer.h>
9 #include <drm/drm_gem_framebuffer_helper.h>
10 #include <drm/drm_modeset_helper.h>
12 #include "framebuffer.h"
15 static const struct drm_framebuffer_funcs psb_fb_funcs = {
16 .destroy = drm_gem_fb_destroy,
17 .create_handle = drm_gem_fb_create_handle,
21 * psb_framebuffer_init - initialize a framebuffer
22 * @dev: our DRM device
23 * @fb: framebuffer to set up
24 * @mode_cmd: mode description
25 * @obj: backing object
27 * Configure and fill in the boilerplate for our frame buffer. Return
28 * 0 on success or an error code if we fail.
30 static int psb_framebuffer_init(struct drm_device *dev,
31 struct drm_framebuffer *fb,
32 const struct drm_mode_fb_cmd2 *mode_cmd,
33 struct drm_gem_object *obj)
35 const struct drm_format_info *info;
39 * Reject unknown formats, YUV formats, and formats with more than
42 info = drm_get_format_info(dev, mode_cmd);
43 if (!info || !info->depth || info->cpp[0] > 4)
46 if (mode_cmd->pitches[0] & 63)
49 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
51 ret = drm_framebuffer_init(dev, fb, &psb_fb_funcs);
53 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
60 * psb_framebuffer_create - create a framebuffer backed by gt
61 * @dev: our DRM device
62 * @mode_cmd: the description of the requested mode
63 * @obj: the backing object
65 * Create a framebuffer object backed by the gt, and fill in the
66 * boilerplate required
68 * TODO: review object references
70 struct drm_framebuffer *psb_framebuffer_create(struct drm_device *dev,
71 const struct drm_mode_fb_cmd2 *mode_cmd,
72 struct drm_gem_object *obj)
74 struct drm_framebuffer *fb;
77 fb = kzalloc(sizeof(*fb), GFP_KERNEL);
79 return ERR_PTR(-ENOMEM);
81 ret = psb_framebuffer_init(dev, fb, mode_cmd, obj);
90 * psb_user_framebuffer_create - create framebuffer
91 * @dev: our DRM device
95 * Create a new framebuffer backed by a userspace GEM object
97 static struct drm_framebuffer *psb_user_framebuffer_create
98 (struct drm_device *dev, struct drm_file *filp,
99 const struct drm_mode_fb_cmd2 *cmd)
101 struct drm_gem_object *obj;
102 struct drm_framebuffer *fb;
105 * Find the GEM object and thus the gtt range object that is
108 obj = drm_gem_object_lookup(filp, cmd->handles[0]);
110 return ERR_PTR(-ENOENT);
112 /* Let the core code do all the work */
113 fb = psb_framebuffer_create(dev, cmd, obj);
115 drm_gem_object_put(obj);
120 static const struct drm_mode_config_funcs psb_mode_funcs = {
121 .fb_create = psb_user_framebuffer_create,
124 static void psb_setup_outputs(struct drm_device *dev)
126 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
127 struct drm_connector_list_iter conn_iter;
128 struct drm_connector *connector;
130 drm_mode_create_scaling_mode_property(dev);
132 /* It is ok for this to fail - we just don't get backlight control */
133 if (!dev_priv->backlight_property)
134 dev_priv->backlight_property = drm_property_create_range(dev, 0,
135 "backlight", 0, 100);
136 dev_priv->ops->output_init(dev);
138 drm_connector_list_iter_begin(dev, &conn_iter);
139 drm_for_each_connector_iter(connector, &conn_iter) {
140 struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
141 struct drm_encoder *encoder = &gma_encoder->base;
142 int crtc_mask = 0, clone_mask = 0;
145 switch (gma_encoder->type) {
146 case INTEL_OUTPUT_ANALOG:
147 crtc_mask = (1 << 0);
148 clone_mask = (1 << INTEL_OUTPUT_ANALOG);
150 case INTEL_OUTPUT_SDVO:
151 crtc_mask = dev_priv->ops->sdvo_mask;
154 case INTEL_OUTPUT_LVDS:
155 crtc_mask = dev_priv->ops->lvds_mask;
158 case INTEL_OUTPUT_MIPI:
159 crtc_mask = (1 << 0);
162 case INTEL_OUTPUT_MIPI2:
163 crtc_mask = (1 << 2);
166 case INTEL_OUTPUT_HDMI:
167 crtc_mask = dev_priv->ops->hdmi_mask;
168 clone_mask = (1 << INTEL_OUTPUT_HDMI);
170 case INTEL_OUTPUT_DISPLAYPORT:
171 crtc_mask = (1 << 0) | (1 << 1);
174 case INTEL_OUTPUT_EDP:
175 crtc_mask = (1 << 1);
178 encoder->possible_crtcs = crtc_mask;
179 encoder->possible_clones =
180 gma_connector_clones(dev, clone_mask);
182 drm_connector_list_iter_end(&conn_iter);
185 void psb_modeset_init(struct drm_device *dev)
187 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
188 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
191 if (drmm_mode_config_init(dev))
194 dev->mode_config.min_width = 0;
195 dev->mode_config.min_height = 0;
197 dev->mode_config.funcs = &psb_mode_funcs;
199 /* num pipes is 2 for PSB but 1 for Mrst */
200 for (i = 0; i < dev_priv->num_pipe; i++)
201 psb_intel_crtc_init(dev, i, mode_dev);
203 dev->mode_config.max_width = 4096;
204 dev->mode_config.max_height = 4096;
206 psb_setup_outputs(dev);
208 if (dev_priv->ops->errata)
209 dev_priv->ops->errata(dev);
211 dev_priv->modeset = true;
214 void psb_modeset_cleanup(struct drm_device *dev)
216 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
217 if (dev_priv->modeset) {
218 drm_kms_helper_poll_fini(dev);