diff options
Diffstat (limited to 'drivers/gpu/drm/gma500/framebuffer.c')
| -rw-r--r-- | drivers/gpu/drm/gma500/framebuffer.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c new file mode 100644 index 0000000000..1a374702b6 --- /dev/null +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0-only +/************************************************************************** + * Copyright (c) 2007-2011, Intel Corporation. + * All Rights Reserved. + * + **************************************************************************/ + +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_modeset_helper.h> + +#include "framebuffer.h" +#include "psb_drv.h" + +static const struct drm_framebuffer_funcs psb_fb_funcs = { + .destroy = drm_gem_fb_destroy, + .create_handle = drm_gem_fb_create_handle, +}; + +/** + * psb_framebuffer_init - initialize a framebuffer + * @dev: our DRM device + * @fb: framebuffer to set up + * @mode_cmd: mode description + * @obj: backing object + * + * Configure and fill in the boilerplate for our frame buffer. Return + * 0 on success or an error code if we fail. + */ +static int psb_framebuffer_init(struct drm_device *dev, + struct drm_framebuffer *fb, + const struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object *obj) +{ + const struct drm_format_info *info; + int ret; + + /* + * Reject unknown formats, YUV formats, and formats with more than + * 4 bytes per pixel. + */ + info = drm_get_format_info(dev, mode_cmd); + if (!info || !info->depth || info->cpp[0] > 4) + return -EINVAL; + + if (mode_cmd->pitches[0] & 63) + return -EINVAL; + + drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); + fb->obj[0] = obj; + ret = drm_framebuffer_init(dev, fb, &psb_fb_funcs); + if (ret) { + dev_err(dev->dev, "framebuffer init failed: %d\n", ret); + return ret; + } + return 0; +} + +/** + * psb_framebuffer_create - create a framebuffer backed by gt + * @dev: our DRM device + * @mode_cmd: the description of the requested mode + * @obj: the backing object + * + * Create a framebuffer object backed by the gt, and fill in the + * boilerplate required + * + * TODO: review object references + */ +struct drm_framebuffer *psb_framebuffer_create(struct drm_device *dev, + const struct drm_mode_fb_cmd2 *mode_cmd, + struct drm_gem_object *obj) +{ + struct drm_framebuffer *fb; + int ret; + + fb = kzalloc(sizeof(*fb), GFP_KERNEL); + if (!fb) + return ERR_PTR(-ENOMEM); + + ret = psb_framebuffer_init(dev, fb, mode_cmd, obj); + if (ret) { + kfree(fb); + return ERR_PTR(ret); + } + return fb; +} + +/** + * psb_user_framebuffer_create - create framebuffer + * @dev: our DRM device + * @filp: client file + * @cmd: mode request + * + * Create a new framebuffer backed by a userspace GEM object + */ +static struct drm_framebuffer *psb_user_framebuffer_create + (struct drm_device *dev, struct drm_file *filp, + const struct drm_mode_fb_cmd2 *cmd) +{ + struct drm_gem_object *obj; + struct drm_framebuffer *fb; + + /* + * Find the GEM object and thus the gtt range object that is + * to back this space + */ + obj = drm_gem_object_lookup(filp, cmd->handles[0]); + if (obj == NULL) + return ERR_PTR(-ENOENT); + + /* Let the core code do all the work */ + fb = psb_framebuffer_create(dev, cmd, obj); + if (IS_ERR(fb)) + drm_gem_object_put(obj); + + return fb; +} + +static const struct drm_mode_config_funcs psb_mode_funcs = { + .fb_create = psb_user_framebuffer_create, +}; + +static void psb_setup_outputs(struct drm_device *dev) +{ + struct drm_psb_private *dev_priv = to_drm_psb_private(dev); + struct drm_connector_list_iter conn_iter; + struct drm_connector *connector; + + drm_mode_create_scaling_mode_property(dev); + + /* It is ok for this to fail - we just don't get backlight control */ + if (!dev_priv->backlight_property) + dev_priv->backlight_property = drm_property_create_range(dev, 0, + "backlight", 0, 100); + dev_priv->ops->output_init(dev); + + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + struct gma_encoder *gma_encoder = gma_attached_encoder(connector); + struct drm_encoder *encoder = &gma_encoder->base; + int crtc_mask = 0, clone_mask = 0; + + /* valid crtcs */ + switch (gma_encoder->type) { + case INTEL_OUTPUT_ANALOG: + crtc_mask = (1 << 0); + clone_mask = (1 << INTEL_OUTPUT_ANALOG); + break; + case INTEL_OUTPUT_SDVO: + crtc_mask = dev_priv->ops->sdvo_mask; + clone_mask = 0; + break; + case INTEL_OUTPUT_LVDS: + crtc_mask = dev_priv->ops->lvds_mask; + clone_mask = 0; + break; + case INTEL_OUTPUT_MIPI: + crtc_mask = (1 << 0); + clone_mask = 0; + break; + case INTEL_OUTPUT_MIPI2: + crtc_mask = (1 << 2); + clone_mask = 0; + break; + case INTEL_OUTPUT_HDMI: + crtc_mask = dev_priv->ops->hdmi_mask; + clone_mask = (1 << INTEL_OUTPUT_HDMI); + break; + case INTEL_OUTPUT_DISPLAYPORT: + crtc_mask = (1 << 0) | (1 << 1); + clone_mask = 0; + break; + case INTEL_OUTPUT_EDP: + crtc_mask = (1 << 1); + clone_mask = 0; + } + encoder->possible_crtcs = crtc_mask; + encoder->possible_clones = + gma_connector_clones(dev, clone_mask); + } + drm_connector_list_iter_end(&conn_iter); +} + +void psb_modeset_init(struct drm_device *dev) +{ + struct drm_psb_private *dev_priv = to_drm_psb_private(dev); + struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev; + int i; + + if (drmm_mode_config_init(dev)) + return; + + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + + dev->mode_config.funcs = &psb_mode_funcs; + + /* num pipes is 2 for PSB but 1 for Mrst */ + for (i = 0; i < dev_priv->num_pipe; i++) + psb_intel_crtc_init(dev, i, mode_dev); + + dev->mode_config.max_width = 4096; + dev->mode_config.max_height = 4096; + + psb_setup_outputs(dev); + + if (dev_priv->ops->errata) + dev_priv->ops->errata(dev); + + dev_priv->modeset = true; +} + +void psb_modeset_cleanup(struct drm_device *dev) +{ + struct drm_psb_private *dev_priv = to_drm_psb_private(dev); + if (dev_priv->modeset) { + drm_kms_helper_poll_fini(dev); + } +} |