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1// SPDX-License-Identifier: GPL-2.0-only2/**************************************************************************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 framebuffer22 * @dev: our DRM device23 * @fb: framebuffer to set up24 * @mode_cmd: mode description25 * @obj: backing object26 *27 * Configure and fill in the boilerplate for our frame buffer. Return28 * 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 than40 * 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 gt61 * @dev: our DRM device62 * @mode_cmd: the description of the requested mode63 * @obj: the backing object64 *65 * Create a framebuffer object backed by the gt, and fill in the66 * boilerplate required67 *68 * TODO: review object references69 */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 framebuffer91 * @dev: our DRM device92 * @filp: client file93 * @cmd: mode request94 *95 * Create a new framebuffer backed by a userspace GEM object96 */97static struct drm_framebuffer *psb_user_framebuffer_create98 (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 is106 * to back this space107 */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