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 15static 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 */ 30static 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, &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 */ 70struct 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(sizeof(*fb), GFP_KERNEL); 78 if (!fb) 79 return ERR_PTR(-ENOMEM); 80 81 ret = psb_framebuffer_init(dev, fb, mode_cmd, obj); 82 if (ret) { 83 kfree(fb); 84 return ERR_PTR(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 */ 97static 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, cmd->handles[0]); 109 if (obj == NULL) 110 return ERR_PTR(-ENOENT); 111 112 /* Let the core code do all the work */ 113 fb = psb_framebuffer_create(dev, cmd, obj); 114 if (IS_ERR(fb)) 115 drm_gem_object_put(obj); 116 117 return fb; 118} 119 120static const struct drm_mode_config_funcs psb_mode_funcs = { 121 .fb_create = psb_user_framebuffer_create, 122}; 123 124static 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, 0, 135 "backlight", 0, 100); 136 dev_priv->ops->output_init(dev); 137 138 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; 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, clone_mask); 181 } 182 drm_connector_list_iter_end(&conn_iter); 183} 184 185void 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, 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 214void 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