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drm/hisilicon/hibmc: Switch to generic fbdev emulation
There's nothing special about hibmc's fbdev emulation that is not provided by the generic implementation. Switch over and remove the driver's code. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20191203083819.6643-2-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
parent
0eee61521d
commit
a88248506a
@ -1,4 +1,4 @@
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# SPDX-License-Identifier: GPL-2.0-only
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hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_fbdev.o hibmc_ttm.o
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hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_ttm.o
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obj-$(CONFIG_DRM_HISI_HIBMC) += hibmc-drm.o
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@ -17,6 +17,7 @@
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#include <drm/drm_atomic_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_gem_vram_helper.h>
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#include <drm/drm_irq.h>
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#include <drm/drm_print.h>
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@ -247,8 +248,6 @@ static int hibmc_unload(struct drm_device *dev)
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{
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struct hibmc_drm_private *priv = dev->dev_private;
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hibmc_fbdev_fini(priv);
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drm_atomic_helper_shutdown(dev);
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if (dev->irq_enabled)
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@ -307,7 +306,7 @@ static int hibmc_load(struct drm_device *dev)
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/* reset all the states of crtc/plane/encoder/connector */
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drm_mode_config_reset(dev);
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ret = hibmc_fbdev_init(priv);
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ret = drm_fbdev_generic_setup(dev, 16);
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if (ret) {
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DRM_ERROR("failed to initialize fbdev: %d\n", ret);
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goto err;
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@ -25,12 +25,6 @@ struct hibmc_framebuffer {
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struct drm_gem_object *obj;
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};
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struct hibmc_fbdev {
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struct drm_fb_helper helper; /* must be first */
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struct hibmc_framebuffer *fb;
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int size;
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};
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struct hibmc_drm_private {
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/* hw */
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void __iomem *mmio;
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@ -42,9 +36,6 @@ struct hibmc_drm_private {
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/* drm */
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struct drm_device *dev;
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bool mode_config_initialized;
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/* fbdev */
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struct hibmc_fbdev *fbdev;
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};
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#define to_hibmc_framebuffer(x) container_of(x, struct hibmc_framebuffer, fb)
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@ -56,8 +47,6 @@ void hibmc_set_current_gate(struct hibmc_drm_private *priv,
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int hibmc_de_init(struct hibmc_drm_private *priv);
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int hibmc_vdac_init(struct hibmc_drm_private *priv);
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int hibmc_fbdev_init(struct hibmc_drm_private *priv);
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void hibmc_fbdev_fini(struct hibmc_drm_private *priv);
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int hibmc_gem_create(struct drm_device *dev, u32 size, bool iskernel,
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struct drm_gem_object **obj);
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@ -1,240 +0,0 @@
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// SPDX-License-Identifier: GPL-2.0-or-later
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/* Hisilicon Hibmc SoC drm driver
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*
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* Based on the bochs drm driver.
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*
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* Copyright (c) 2016 Huawei Limited.
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*
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* Author:
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* Rongrong Zou <zourongrong@huawei.com>
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* Rongrong Zou <zourongrong@gmail.com>
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* Jianhua Li <lijianhua@huawei.com>
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*/
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#include <drm/drm_crtc.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 <drm/drm_gem_vram_helper.h>
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#include <drm/drm_probe_helper.h>
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#include "hibmc_drm_drv.h"
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static int hibmcfb_create_object(
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struct hibmc_drm_private *priv,
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const struct drm_mode_fb_cmd2 *mode_cmd,
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struct drm_gem_object **gobj_p)
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{
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struct drm_gem_object *gobj;
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struct drm_device *dev = priv->dev;
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u32 size;
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int ret = 0;
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size = mode_cmd->pitches[0] * mode_cmd->height;
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ret = hibmc_gem_create(dev, size, true, &gobj);
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if (ret)
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return ret;
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*gobj_p = gobj;
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return ret;
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}
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static const struct fb_ops hibmc_drm_fb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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.fb_fillrect = drm_fb_helper_sys_fillrect,
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.fb_copyarea = drm_fb_helper_sys_copyarea,
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.fb_imageblit = drm_fb_helper_sys_imageblit,
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.fb_pan_display = drm_fb_helper_pan_display,
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.fb_blank = drm_fb_helper_blank,
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.fb_setcmap = drm_fb_helper_setcmap,
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};
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static int hibmc_drm_fb_create(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct hibmc_fbdev *hi_fbdev =
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container_of(helper, struct hibmc_fbdev, helper);
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struct hibmc_drm_private *priv = helper->dev->dev_private;
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struct fb_info *info;
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struct drm_mode_fb_cmd2 mode_cmd;
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struct drm_gem_object *gobj = NULL;
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int ret = 0;
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size_t size;
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unsigned int bytes_per_pixel;
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struct drm_gem_vram_object *gbo = NULL;
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void *base;
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DRM_DEBUG_DRIVER("surface width(%d), height(%d) and bpp(%d)\n",
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sizes->surface_width, sizes->surface_height,
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sizes->surface_bpp);
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bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
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mode_cmd.width = sizes->surface_width;
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mode_cmd.height = sizes->surface_height;
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mode_cmd.pitches[0] = mode_cmd.width * bytes_per_pixel;
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mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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size = PAGE_ALIGN(mode_cmd.pitches[0] * mode_cmd.height);
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ret = hibmcfb_create_object(priv, &mode_cmd, &gobj);
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if (ret) {
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DRM_ERROR("failed to create fbcon backing object: %d\n", ret);
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return -ENOMEM;
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}
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gbo = drm_gem_vram_of_gem(gobj);
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ret = drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM);
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if (ret) {
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DRM_ERROR("failed to pin fbcon: %d\n", ret);
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goto out_unref_gem;
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}
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base = drm_gem_vram_kmap(gbo, true, NULL);
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if (IS_ERR(base)) {
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ret = PTR_ERR(base);
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DRM_ERROR("failed to kmap fbcon: %d\n", ret);
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goto out_unpin_bo;
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}
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info = drm_fb_helper_alloc_fbi(helper);
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if (IS_ERR(info)) {
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ret = PTR_ERR(info);
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DRM_ERROR("failed to allocate fbi: %d\n", ret);
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goto out_release_fbi;
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}
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hi_fbdev->fb = hibmc_framebuffer_init(priv->dev, &mode_cmd, gobj);
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if (IS_ERR(hi_fbdev->fb)) {
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ret = PTR_ERR(hi_fbdev->fb);
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hi_fbdev->fb = NULL;
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DRM_ERROR("failed to initialize framebuffer: %d\n", ret);
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goto out_release_fbi;
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}
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priv->fbdev->size = size;
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hi_fbdev->helper.fb = &hi_fbdev->fb->fb;
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info->fbops = &hibmc_drm_fb_ops;
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drm_fb_helper_fill_info(info, &priv->fbdev->helper, sizes);
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info->screen_base = base;
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info->screen_size = size;
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info->fix.smem_start = gbo->bo.mem.bus.offset + gbo->bo.mem.bus.base;
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info->fix.smem_len = size;
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return 0;
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out_release_fbi:
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drm_gem_vram_kunmap(gbo);
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out_unpin_bo:
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drm_gem_vram_unpin(gbo);
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out_unref_gem:
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drm_gem_object_put_unlocked(gobj);
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return ret;
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}
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static void hibmc_fbdev_destroy(struct hibmc_fbdev *fbdev)
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{
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struct hibmc_framebuffer *gfb = fbdev->fb;
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struct drm_fb_helper *fbh = &fbdev->helper;
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drm_fb_helper_unregister_fbi(fbh);
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drm_fb_helper_fini(fbh);
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if (gfb)
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drm_framebuffer_put(&gfb->fb);
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}
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static const struct drm_fb_helper_funcs hibmc_fbdev_helper_funcs = {
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.fb_probe = hibmc_drm_fb_create,
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};
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int hibmc_fbdev_init(struct hibmc_drm_private *priv)
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{
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int ret;
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struct fb_var_screeninfo *var;
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struct fb_fix_screeninfo *fix;
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struct hibmc_fbdev *hifbdev;
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hifbdev = devm_kzalloc(priv->dev->dev, sizeof(*hifbdev), GFP_KERNEL);
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if (!hifbdev) {
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DRM_ERROR("failed to allocate hibmc_fbdev\n");
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return -ENOMEM;
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}
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priv->fbdev = hifbdev;
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drm_fb_helper_prepare(priv->dev, &hifbdev->helper,
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&hibmc_fbdev_helper_funcs);
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/* Now just one crtc and one channel */
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ret = drm_fb_helper_init(priv->dev, &hifbdev->helper, 1);
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if (ret) {
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DRM_ERROR("failed to initialize fb helper: %d\n", ret);
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return ret;
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}
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ret = drm_fb_helper_single_add_all_connectors(&hifbdev->helper);
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if (ret) {
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DRM_ERROR("failed to add all connectors: %d\n", ret);
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goto fini;
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}
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ret = drm_fb_helper_initial_config(&hifbdev->helper, 16);
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if (ret) {
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DRM_ERROR("failed to setup initial conn config: %d\n", ret);
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goto fini;
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}
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var = &hifbdev->helper.fbdev->var;
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fix = &hifbdev->helper.fbdev->fix;
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DRM_DEBUG_DRIVER("Member of info->var is :\n"
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"xres=%d\n"
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"yres=%d\n"
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"xres_virtual=%d\n"
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"yres_virtual=%d\n"
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"xoffset=%d\n"
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"yoffset=%d\n"
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"bits_per_pixel=%d\n"
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"...\n", var->xres, var->yres, var->xres_virtual,
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var->yres_virtual, var->xoffset, var->yoffset,
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var->bits_per_pixel);
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DRM_DEBUG_DRIVER("Member of info->fix is :\n"
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"smem_start=%lx\n"
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"smem_len=%d\n"
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"type=%d\n"
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"type_aux=%d\n"
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"visual=%d\n"
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"xpanstep=%d\n"
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"ypanstep=%d\n"
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"ywrapstep=%d\n"
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"line_length=%d\n"
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"accel=%d\n"
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"capabilities=%d\n"
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"...\n", fix->smem_start, fix->smem_len, fix->type,
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fix->type_aux, fix->visual, fix->xpanstep,
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fix->ypanstep, fix->ywrapstep, fix->line_length,
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fix->accel, fix->capabilities);
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return 0;
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fini:
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drm_fb_helper_fini(&hifbdev->helper);
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return ret;
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}
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void hibmc_fbdev_fini(struct hibmc_drm_private *priv)
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{
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if (!priv->fbdev)
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return;
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hibmc_fbdev_destroy(priv->fbdev);
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priv->fbdev = NULL;
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}
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