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797f8fc4cc
Plumb the format info from .fb_create() all the way to drm_helper_mode_fill_fb_struct() to avoid the redundant lookup. For the fbdev case a manual drm_get_format_info() lookup is needed. Cc: Russell King <linux@armlinux.org.uk> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250701090722.13645-11-ville.syrjala@linux.intel.com
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2012 Russell King
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* Written from the i915 driver.
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*/
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#include <linux/errno.h>
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#include <linux/fb.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_fourcc.h>
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#include "armada_crtc.h"
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#include "armada_drm.h"
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#include "armada_fb.h"
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#include "armada_gem.h"
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static void armada_fbdev_fb_destroy(struct fb_info *info)
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{
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struct drm_fb_helper *fbh = info->par;
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drm_fb_helper_fini(fbh);
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fbh->fb->funcs->destroy(fbh->fb);
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drm_client_release(&fbh->client);
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drm_fb_helper_unprepare(fbh);
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kfree(fbh);
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}
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static const struct fb_ops armada_fb_ops = {
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.owner = THIS_MODULE,
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FB_DEFAULT_IOMEM_OPS,
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DRM_FB_HELPER_DEFAULT_OPS,
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.fb_destroy = armada_fbdev_fb_destroy,
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};
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static const struct drm_fb_helper_funcs armada_fbdev_helper_funcs;
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int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct drm_device *dev = fbh->dev;
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struct drm_mode_fb_cmd2 mode;
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struct armada_framebuffer *dfb;
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struct armada_gem_object *obj;
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struct fb_info *info;
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int size, ret;
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void *ptr;
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memset(&mode, 0, sizeof(mode));
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mode.width = sizes->surface_width;
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mode.height = sizes->surface_height;
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mode.pitches[0] = armada_pitch(mode.width, sizes->surface_bpp);
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mode.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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size = mode.pitches[0] * mode.height;
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obj = armada_gem_alloc_private_object(dev, size);
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if (!obj) {
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DRM_ERROR("failed to allocate fb memory\n");
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return -ENOMEM;
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}
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ret = armada_gem_linear_back(dev, obj);
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if (ret) {
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drm_gem_object_put(&obj->obj);
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return ret;
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}
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ptr = armada_gem_map_object(dev, obj);
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if (!ptr) {
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drm_gem_object_put(&obj->obj);
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return -ENOMEM;
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}
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dfb = armada_framebuffer_create(dev,
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drm_get_format_info(dev, mode.pixel_format,
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mode.modifier[0]),
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&mode, obj);
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/*
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* A reference is now held by the framebuffer object if
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* successful, otherwise this drops the ref for the error path.
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*/
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drm_gem_object_put(&obj->obj);
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if (IS_ERR(dfb))
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return PTR_ERR(dfb);
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info = drm_fb_helper_alloc_info(fbh);
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if (IS_ERR(info)) {
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ret = PTR_ERR(info);
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goto err_fballoc;
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}
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info->fbops = &armada_fb_ops;
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info->fix.smem_start = obj->phys_addr;
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info->fix.smem_len = obj->obj.size;
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info->screen_size = obj->obj.size;
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info->screen_base = ptr;
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fbh->funcs = &armada_fbdev_helper_funcs;
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fbh->fb = &dfb->fb;
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drm_fb_helper_fill_info(info, fbh, sizes);
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DRM_DEBUG_KMS("allocated %dx%d %dbpp fb: 0x%08llx\n",
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dfb->fb.width, dfb->fb.height, dfb->fb.format->cpp[0] * 8,
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(unsigned long long)obj->phys_addr);
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return 0;
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err_fballoc:
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dfb->fb.funcs->destroy(&dfb->fb);
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return ret;
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}
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