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![Noralf Trønnes](/assets/img/avatar_default.png)
Use drm_fb_cma_fbdev_init() and drm_fb_cma_fbdev_fini() which relies on the fact that drm_device holds a pointer to the drm_fb_helper structure. This means that the driver doesn't have to keep track of that. Also use the drm_fb_helper functions directly. Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20171115142001.45358-13-noralf@tronnes.org
357 lines
7.9 KiB
C
357 lines
7.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) STMicroelectronics SA 2014
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* Author: Benjamin Gaignard <benjamin.gaignard@st.com> for STMicroelectronics.
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*/
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#include <drm/drmP.h>
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#include <linux/component.h>
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#include <linux/debugfs.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_fb_helper.h>
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#include <drm/drm_fb_cma_helper.h>
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#include <drm/drm_of.h>
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#include "sti_crtc.h"
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#include "sti_drv.h"
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#include "sti_plane.h"
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#define DRIVER_NAME "sti"
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#define DRIVER_DESC "STMicroelectronics SoC DRM"
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#define DRIVER_DATE "20140601"
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#define DRIVER_MAJOR 1
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#define DRIVER_MINOR 0
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#define STI_MAX_FB_HEIGHT 4096
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#define STI_MAX_FB_WIDTH 4096
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static int sti_drm_fps_get(void *data, u64 *val)
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{
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struct drm_device *drm_dev = data;
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struct drm_plane *p;
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unsigned int i = 0;
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*val = 0;
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list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
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struct sti_plane *plane = to_sti_plane(p);
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*val |= plane->fps_info.output << i;
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i++;
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}
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return 0;
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}
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static int sti_drm_fps_set(void *data, u64 val)
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{
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struct drm_device *drm_dev = data;
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struct drm_plane *p;
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unsigned int i = 0;
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list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
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struct sti_plane *plane = to_sti_plane(p);
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memset(&plane->fps_info, 0, sizeof(plane->fps_info));
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plane->fps_info.output = (val >> i) & 1;
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i++;
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}
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(sti_drm_fps_fops,
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sti_drm_fps_get, sti_drm_fps_set, "%llu\n");
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static int sti_drm_fps_dbg_show(struct seq_file *s, void *data)
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{
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struct drm_info_node *node = s->private;
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struct drm_device *dev = node->minor->dev;
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struct drm_plane *p;
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list_for_each_entry(p, &dev->mode_config.plane_list, head) {
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struct sti_plane *plane = to_sti_plane(p);
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seq_printf(s, "%s%s\n",
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plane->fps_info.fps_str,
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plane->fps_info.fips_str);
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}
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return 0;
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}
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static struct drm_info_list sti_drm_dbg_list[] = {
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{"fps_get", sti_drm_fps_dbg_show, 0},
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};
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static int sti_drm_dbg_init(struct drm_minor *minor)
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{
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struct dentry *dentry;
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int ret;
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ret = drm_debugfs_create_files(sti_drm_dbg_list,
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ARRAY_SIZE(sti_drm_dbg_list),
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minor->debugfs_root, minor);
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if (ret)
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goto err;
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dentry = debugfs_create_file("fps_show", S_IRUGO | S_IWUSR,
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minor->debugfs_root, minor->dev,
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&sti_drm_fps_fops);
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if (!dentry) {
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ret = -ENOMEM;
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goto err;
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}
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DRM_INFO("%s: debugfs installed\n", DRIVER_NAME);
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return 0;
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err:
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DRM_ERROR("%s: cannot install debugfs\n", DRIVER_NAME);
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return ret;
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}
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static int sti_atomic_check(struct drm_device *dev,
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struct drm_atomic_state *state)
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{
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int ret;
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ret = drm_atomic_helper_check_modeset(dev, state);
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if (ret)
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return ret;
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ret = drm_atomic_normalize_zpos(dev, state);
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if (ret)
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return ret;
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ret = drm_atomic_helper_check_planes(dev, state);
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if (ret)
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return ret;
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return ret;
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}
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static const struct drm_mode_config_funcs sti_mode_config_funcs = {
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.fb_create = drm_gem_fb_create,
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.output_poll_changed = drm_fb_helper_output_poll_changed,
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.atomic_check = sti_atomic_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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static void sti_mode_config_init(struct drm_device *dev)
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{
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dev->mode_config.min_width = 0;
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dev->mode_config.min_height = 0;
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/*
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* set max width and height as default value.
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* this value would be used to check framebuffer size limitation
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* at drm_mode_addfb().
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*/
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dev->mode_config.max_width = STI_MAX_FB_WIDTH;
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dev->mode_config.max_height = STI_MAX_FB_HEIGHT;
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dev->mode_config.funcs = &sti_mode_config_funcs;
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}
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DEFINE_DRM_GEM_CMA_FOPS(sti_driver_fops);
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static struct drm_driver sti_driver = {
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.driver_features = DRIVER_MODESET |
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DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
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.gem_free_object_unlocked = drm_gem_cma_free_object,
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.gem_vm_ops = &drm_gem_cma_vm_ops,
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.dumb_create = drm_gem_cma_dumb_create,
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.fops = &sti_driver_fops,
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.enable_vblank = sti_crtc_enable_vblank,
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.disable_vblank = sti_crtc_disable_vblank,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_export = drm_gem_prime_export,
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.gem_prime_import = drm_gem_prime_import,
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.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
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.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
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.gem_prime_vmap = drm_gem_cma_prime_vmap,
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.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
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.gem_prime_mmap = drm_gem_cma_prime_mmap,
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.debugfs_init = sti_drm_dbg_init,
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.name = DRIVER_NAME,
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.desc = DRIVER_DESC,
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.date = DRIVER_DATE,
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.major = DRIVER_MAJOR,
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.minor = DRIVER_MINOR,
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};
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static int compare_of(struct device *dev, void *data)
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{
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return dev->of_node == data;
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}
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static int sti_init(struct drm_device *ddev)
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{
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struct sti_private *private;
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private = kzalloc(sizeof(*private), GFP_KERNEL);
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if (!private)
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return -ENOMEM;
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ddev->dev_private = (void *)private;
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dev_set_drvdata(ddev->dev, ddev);
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private->drm_dev = ddev;
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drm_mode_config_init(ddev);
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sti_mode_config_init(ddev);
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drm_kms_helper_poll_init(ddev);
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return 0;
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}
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static void sti_cleanup(struct drm_device *ddev)
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{
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struct sti_private *private = ddev->dev_private;
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drm_fb_cma_fbdev_fini(ddev);
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drm_kms_helper_poll_fini(ddev);
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component_unbind_all(ddev->dev, ddev);
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kfree(private);
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ddev->dev_private = NULL;
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}
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static int sti_bind(struct device *dev)
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{
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struct drm_device *ddev;
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int ret;
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ddev = drm_dev_alloc(&sti_driver, dev);
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if (IS_ERR(ddev))
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return PTR_ERR(ddev);
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ret = sti_init(ddev);
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if (ret)
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goto err_drm_dev_unref;
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ret = component_bind_all(ddev->dev, ddev);
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if (ret)
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goto err_cleanup;
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ret = drm_dev_register(ddev, 0);
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if (ret)
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goto err_register;
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drm_mode_config_reset(ddev);
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if (ddev->mode_config.num_connector) {
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ret = drm_fb_cma_fbdev_init(ddev, 32, 0);
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if (ret)
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DRM_DEBUG_DRIVER("Warning: fails to create fbdev\n");
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}
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return 0;
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err_register:
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drm_mode_config_cleanup(ddev);
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err_cleanup:
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sti_cleanup(ddev);
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err_drm_dev_unref:
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drm_dev_unref(ddev);
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return ret;
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}
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static void sti_unbind(struct device *dev)
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{
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struct drm_device *ddev = dev_get_drvdata(dev);
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drm_dev_unregister(ddev);
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sti_cleanup(ddev);
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drm_dev_unref(ddev);
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}
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static const struct component_master_ops sti_ops = {
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.bind = sti_bind,
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.unbind = sti_unbind,
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};
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static int sti_platform_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct device_node *node = dev->of_node;
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struct device_node *child_np;
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struct component_match *match = NULL;
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dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
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devm_of_platform_populate(dev);
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child_np = of_get_next_available_child(node, NULL);
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while (child_np) {
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drm_of_component_match_add(dev, &match, compare_of,
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child_np);
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child_np = of_get_next_available_child(node, child_np);
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}
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return component_master_add_with_match(dev, &sti_ops, match);
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}
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static int sti_platform_remove(struct platform_device *pdev)
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{
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component_master_del(&pdev->dev, &sti_ops);
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return 0;
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}
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static const struct of_device_id sti_dt_ids[] = {
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{ .compatible = "st,sti-display-subsystem", },
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{ /* end node */ },
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};
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MODULE_DEVICE_TABLE(of, sti_dt_ids);
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static struct platform_driver sti_platform_driver = {
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.probe = sti_platform_probe,
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.remove = sti_platform_remove,
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.driver = {
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.name = DRIVER_NAME,
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.of_match_table = sti_dt_ids,
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},
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};
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static struct platform_driver * const drivers[] = {
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&sti_tvout_driver,
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&sti_hqvdp_driver,
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&sti_hdmi_driver,
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&sti_hda_driver,
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&sti_dvo_driver,
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&sti_vtg_driver,
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&sti_compositor_driver,
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&sti_platform_driver,
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};
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static int sti_drm_init(void)
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{
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return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
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}
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module_init(sti_drm_init);
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static void sti_drm_exit(void)
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{
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platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
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}
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module_exit(sti_drm_exit);
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MODULE_AUTHOR("Benjamin Gaignard <benjamin.gaignard@st.com>");
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MODULE_DESCRIPTION("STMicroelectronics SoC DRM driver");
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MODULE_LICENSE("GPL");
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