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->pixel_format, 43 mode_cmd->modifier[0]); 44 if (!info || !info->depth || info->cpp[0] > 4) 45 return -EINVAL; 46 47 if (mode_cmd->pitches[0] & 63) 48 return -EINVAL; 49 50 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); 51 fb->obj[0] = obj; 52 ret = drm_framebuffer_init(dev, fb, &psb_fb_funcs); 53 if (ret) { 54 dev_err(dev->dev, "framebuffer init failed: %d\n", ret); 55 return ret; 56 } 57 return 0; 58 } 59 60 /** 61 * psb_framebuffer_create - create a framebuffer backed by gt 62 * @dev: our DRM device 63 * @mode_cmd: the description of the requested mode 64 * @obj: the backing object 65 * 66 * Create a framebuffer object backed by the gt, and fill in the 67 * boilerplate required 68 * 69 * TODO: review object references 70 */ 71 struct drm_framebuffer *psb_framebuffer_create(struct drm_device *dev, 72 const struct drm_mode_fb_cmd2 *mode_cmd, 73 struct drm_gem_object *obj) 74 { 75 struct drm_framebuffer *fb; 76 int ret; 77 78 fb = kzalloc(sizeof(*fb), GFP_KERNEL); 79 if (!fb) 80 return ERR_PTR(-ENOMEM); 81 82 ret = psb_framebuffer_init(dev, fb, mode_cmd, obj); 83 if (ret) { 84 kfree(fb); 85 return ERR_PTR(ret); 86 } 87 return fb; 88 } 89 90 /** 91 * psb_user_framebuffer_create - create framebuffer 92 * @dev: our DRM device 93 * @filp: client file 94 * @cmd: mode request 95 * 96 * Create a new framebuffer backed by a userspace GEM object 97 */ 98 static struct drm_framebuffer *psb_user_framebuffer_create 99 (struct drm_device *dev, struct drm_file *filp, 100 const struct drm_mode_fb_cmd2 *cmd) 101 { 102 struct drm_gem_object *obj; 103 struct drm_framebuffer *fb; 104 105 /* 106 * Find the GEM object and thus the gtt range object that is 107 * to back this space 108 */ 109 obj = drm_gem_object_lookup(filp, cmd->handles[0]); 110 if (obj == NULL) 111 return ERR_PTR(-ENOENT); 112 113 /* Let the core code do all the work */ 114 fb = psb_framebuffer_create(dev, cmd, obj); 115 if (IS_ERR(fb)) 116 drm_gem_object_put(obj); 117 118 return fb; 119 } 120 121 static const struct drm_mode_config_funcs psb_mode_funcs = { 122 .fb_create = psb_user_framebuffer_create, 123 }; 124 125 static void psb_setup_outputs(struct drm_device *dev) 126 { 127 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 128 struct drm_connector_list_iter conn_iter; 129 struct drm_connector *connector; 130 131 drm_mode_create_scaling_mode_property(dev); 132 133 /* It is ok for this to fail - we just don't get backlight control */ 134 if (!dev_priv->backlight_property) 135 dev_priv->backlight_property = drm_property_create_range(dev, 0, 136 "backlight", 0, 100); 137 dev_priv->ops->output_init(dev); 138 139 drm_connector_list_iter_begin(dev, &conn_iter); 140 drm_for_each_connector_iter(connector, &conn_iter) { 141 struct gma_encoder *gma_encoder = gma_attached_encoder(connector); 142 struct drm_encoder *encoder = &gma_encoder->base; 143 int crtc_mask = 0, clone_mask = 0; 144 145 /* valid crtcs */ 146 switch (gma_encoder->type) { 147 case INTEL_OUTPUT_ANALOG: 148 crtc_mask = (1 << 0); 149 clone_mask = (1 << INTEL_OUTPUT_ANALOG); 150 break; 151 case INTEL_OUTPUT_SDVO: 152 crtc_mask = dev_priv->ops->sdvo_mask; 153 clone_mask = 0; 154 break; 155 case INTEL_OUTPUT_LVDS: 156 crtc_mask = dev_priv->ops->lvds_mask; 157 clone_mask = 0; 158 break; 159 case INTEL_OUTPUT_MIPI: 160 crtc_mask = (1 << 0); 161 clone_mask = 0; 162 break; 163 case INTEL_OUTPUT_MIPI2: 164 crtc_mask = (1 << 2); 165 clone_mask = 0; 166 break; 167 case INTEL_OUTPUT_HDMI: 168 crtc_mask = dev_priv->ops->hdmi_mask; 169 clone_mask = (1 << INTEL_OUTPUT_HDMI); 170 break; 171 case INTEL_OUTPUT_DISPLAYPORT: 172 crtc_mask = (1 << 0) | (1 << 1); 173 clone_mask = 0; 174 break; 175 case INTEL_OUTPUT_EDP: 176 crtc_mask = (1 << 1); 177 clone_mask = 0; 178 } 179 encoder->possible_crtcs = crtc_mask; 180 encoder->possible_clones = 181 gma_connector_clones(dev, clone_mask); 182 } 183 drm_connector_list_iter_end(&conn_iter); 184 } 185 186 void psb_modeset_init(struct drm_device *dev) 187 { 188 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 189 struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; 190 int i; 191 192 if (drmm_mode_config_init(dev)) 193 return; 194 195 dev->mode_config.min_width = 0; 196 dev->mode_config.min_height = 0; 197 198 dev->mode_config.funcs = &psb_mode_funcs; 199 200 /* num pipes is 2 for PSB but 1 for Mrst */ 201 for (i = 0; i < dev_priv->num_pipe; i++) 202 psb_intel_crtc_init(dev, i, mode_dev); 203 204 dev->mode_config.max_width = 4096; 205 dev->mode_config.max_height = 4096; 206 207 psb_setup_outputs(dev); 208 209 if (dev_priv->ops->errata) 210 dev_priv->ops->errata(dev); 211 212 dev_priv->modeset = true; 213 } 214 215 void psb_modeset_cleanup(struct drm_device *dev) 216 { 217 struct drm_psb_private *dev_priv = to_drm_psb_private(dev); 218 if (dev_priv->modeset) { 219 drm_kms_helper_poll_fini(dev); 220 } 221 } 222