1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /************************************************************************** |
3 | * Copyright (c) 2007-2011, Intel Corporation. |
4 | * All Rights Reserved. |
5 | * |
6 | **************************************************************************/ |
7 | |
8 | #include <drm/drm_framebuffer.h> |
9 | #include <drm/drm_gem_framebuffer_helper.h> |
10 | #include <drm/drm_modeset_helper.h> |
11 | |
12 | #include "framebuffer.h" |
13 | #include "psb_drv.h" |
14 | |
15 | static const struct drm_framebuffer_funcs psb_fb_funcs = { |
16 | .destroy = drm_gem_fb_destroy, |
17 | .create_handle = drm_gem_fb_create_handle, |
18 | }; |
19 | |
20 | /** |
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 |
26 | * |
27 | * Configure and fill in the boilerplate for our frame buffer. Return |
28 | * 0 on success or an error code if we fail. |
29 | */ |
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) |
34 | { |
35 | const struct drm_format_info *info; |
36 | int ret; |
37 | |
38 | /* |
39 | * Reject unknown formats, YUV formats, and formats with more than |
40 | * 4 bytes per pixel. |
41 | */ |
42 | info = drm_get_format_info(dev, mode_cmd); |
43 | if (!info || !info->depth || info->cpp[0] > 4) |
44 | return -EINVAL; |
45 | |
46 | if (mode_cmd->pitches[0] & 63) |
47 | return -EINVAL; |
48 | |
49 | drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); |
50 | fb->obj[0] = obj; |
51 | ret = drm_framebuffer_init(dev, fb, funcs: &psb_fb_funcs); |
52 | if (ret) { |
53 | dev_err(dev->dev, "framebuffer init failed: %d\n" , ret); |
54 | return ret; |
55 | } |
56 | return 0; |
57 | } |
58 | |
59 | /** |
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 |
64 | * |
65 | * Create a framebuffer object backed by the gt, and fill in the |
66 | * boilerplate required |
67 | * |
68 | * TODO: review object references |
69 | */ |
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) |
73 | { |
74 | struct drm_framebuffer *fb; |
75 | int ret; |
76 | |
77 | fb = kzalloc(size: sizeof(*fb), GFP_KERNEL); |
78 | if (!fb) |
79 | return ERR_PTR(error: -ENOMEM); |
80 | |
81 | ret = psb_framebuffer_init(dev, fb, mode_cmd, obj); |
82 | if (ret) { |
83 | kfree(objp: fb); |
84 | return ERR_PTR(error: ret); |
85 | } |
86 | return fb; |
87 | } |
88 | |
89 | /** |
90 | * psb_user_framebuffer_create - create framebuffer |
91 | * @dev: our DRM device |
92 | * @filp: client file |
93 | * @cmd: mode request |
94 | * |
95 | * Create a new framebuffer backed by a userspace GEM object |
96 | */ |
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) |
100 | { |
101 | struct drm_gem_object *obj; |
102 | struct drm_framebuffer *fb; |
103 | |
104 | /* |
105 | * Find the GEM object and thus the gtt range object that is |
106 | * to back this space |
107 | */ |
108 | obj = drm_gem_object_lookup(filp, handle: cmd->handles[0]); |
109 | if (obj == NULL) |
110 | return ERR_PTR(error: -ENOENT); |
111 | |
112 | /* Let the core code do all the work */ |
113 | fb = psb_framebuffer_create(dev, mode_cmd: cmd, obj); |
114 | if (IS_ERR(ptr: fb)) |
115 | drm_gem_object_put(obj); |
116 | |
117 | return fb; |
118 | } |
119 | |
120 | static const struct drm_mode_config_funcs psb_mode_funcs = { |
121 | .fb_create = psb_user_framebuffer_create, |
122 | }; |
123 | |
124 | static void psb_setup_outputs(struct drm_device *dev) |
125 | { |
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; |
129 | |
130 | drm_mode_create_scaling_mode_property(dev); |
131 | |
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, flags: 0, |
135 | name: "backlight" , min: 0, max: 100); |
136 | dev_priv->ops->output_init(dev); |
137 | |
138 | drm_connector_list_iter_begin(dev, iter: &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; |
143 | |
144 | /* valid crtcs */ |
145 | switch (gma_encoder->type) { |
146 | case INTEL_OUTPUT_ANALOG: |
147 | crtc_mask = (1 << 0); |
148 | clone_mask = (1 << INTEL_OUTPUT_ANALOG); |
149 | break; |
150 | case INTEL_OUTPUT_SDVO: |
151 | crtc_mask = dev_priv->ops->sdvo_mask; |
152 | clone_mask = 0; |
153 | break; |
154 | case INTEL_OUTPUT_LVDS: |
155 | crtc_mask = dev_priv->ops->lvds_mask; |
156 | clone_mask = 0; |
157 | break; |
158 | case INTEL_OUTPUT_MIPI: |
159 | crtc_mask = (1 << 0); |
160 | clone_mask = 0; |
161 | break; |
162 | case INTEL_OUTPUT_MIPI2: |
163 | crtc_mask = (1 << 2); |
164 | clone_mask = 0; |
165 | break; |
166 | case INTEL_OUTPUT_HDMI: |
167 | crtc_mask = dev_priv->ops->hdmi_mask; |
168 | clone_mask = (1 << INTEL_OUTPUT_HDMI); |
169 | break; |
170 | case INTEL_OUTPUT_DISPLAYPORT: |
171 | crtc_mask = (1 << 0) | (1 << 1); |
172 | clone_mask = 0; |
173 | break; |
174 | case INTEL_OUTPUT_EDP: |
175 | crtc_mask = (1 << 1); |
176 | clone_mask = 0; |
177 | } |
178 | encoder->possible_crtcs = crtc_mask; |
179 | encoder->possible_clones = |
180 | gma_connector_clones(dev, type_mask: clone_mask); |
181 | } |
182 | drm_connector_list_iter_end(iter: &conn_iter); |
183 | } |
184 | |
185 | void psb_modeset_init(struct drm_device *dev) |
186 | { |
187 | struct drm_psb_private *dev_priv = to_drm_psb_private(dev); |
188 | struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; |
189 | int i; |
190 | |
191 | if (drmm_mode_config_init(dev)) |
192 | return; |
193 | |
194 | dev->mode_config.min_width = 0; |
195 | dev->mode_config.min_height = 0; |
196 | |
197 | dev->mode_config.funcs = &psb_mode_funcs; |
198 | |
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, pipe: i, mode_dev); |
202 | |
203 | dev->mode_config.max_width = 4096; |
204 | dev->mode_config.max_height = 4096; |
205 | |
206 | psb_setup_outputs(dev); |
207 | |
208 | if (dev_priv->ops->errata) |
209 | dev_priv->ops->errata(dev); |
210 | |
211 | dev_priv->modeset = true; |
212 | } |
213 | |
214 | void psb_modeset_cleanup(struct drm_device *dev) |
215 | { |
216 | struct drm_psb_private *dev_priv = to_drm_psb_private(dev); |
217 | if (dev_priv->modeset) { |
218 | drm_kms_helper_poll_fini(dev); |
219 | } |
220 | } |
221 | |