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linux-sg2042/drivers/gpu/drm/msm/msm_drv.c

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/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "msm_drv.h"
#include "msm_gpu.h"
#include "msm_kms.h"
static void msm_fb_output_poll_changed(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
if (priv->fbdev)
drm_fb_helper_hotplug_event(priv->fbdev);
}
static const struct drm_mode_config_funcs mode_config_funcs = {
.fb_create = msm_framebuffer_create,
.output_poll_changed = msm_fb_output_poll_changed,
};
int msm_register_mmu(struct drm_device *dev, struct msm_mmu *mmu)
{
struct msm_drm_private *priv = dev->dev_private;
int idx = priv->num_mmus++;
if (WARN_ON(idx >= ARRAY_SIZE(priv->mmus)))
return -EINVAL;
priv->mmus[idx] = mmu;
return idx;
}
#ifdef CONFIG_DRM_MSM_REGISTER_LOGGING
static bool reglog = false;
MODULE_PARM_DESC(reglog, "Enable register read/write logging");
module_param(reglog, bool, 0600);
#else
#define reglog 0
#endif
static char *vram = "16m";
MODULE_PARM_DESC(vram, "Configure VRAM size (for devices without IOMMU/GPUMMU");
module_param(vram, charp, 0);
/*
* Util/helpers:
*/
void __iomem *msm_ioremap(struct platform_device *pdev, const char *name,
const char *dbgname)
{
struct resource *res;
unsigned long size;
void __iomem *ptr;
if (name)
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
else
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "failed to get memory resource: %s\n", name);
return ERR_PTR(-EINVAL);
}
size = resource_size(res);
ptr = devm_ioremap_nocache(&pdev->dev, res->start, size);
if (!ptr) {
dev_err(&pdev->dev, "failed to ioremap: %s\n", name);
return ERR_PTR(-ENOMEM);
}
if (reglog)
printk(KERN_DEBUG "IO:region %s %08x %08lx\n", dbgname, (u32)ptr, size);
return ptr;
}
void msm_writel(u32 data, void __iomem *addr)
{
if (reglog)
printk(KERN_DEBUG "IO:W %08x %08x\n", (u32)addr, data);
writel(data, addr);
}
u32 msm_readl(const void __iomem *addr)
{
u32 val = readl(addr);
if (reglog)
printk(KERN_ERR "IO:R %08x %08x\n", (u32)addr, val);
return val;
}
/*
* DRM operations:
*/
static int msm_unload(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
struct msm_gpu *gpu = priv->gpu;
drm_kms_helper_poll_fini(dev);
drm_mode_config_cleanup(dev);
drm_vblank_cleanup(dev);
pm_runtime_get_sync(dev->dev);
drm_irq_uninstall(dev);
pm_runtime_put_sync(dev->dev);
flush_workqueue(priv->wq);
destroy_workqueue(priv->wq);
if (kms) {
pm_runtime_disable(dev->dev);
kms->funcs->destroy(kms);
}
if (gpu) {
mutex_lock(&dev->struct_mutex);
gpu->funcs->pm_suspend(gpu);
gpu->funcs->destroy(gpu);
mutex_unlock(&dev->struct_mutex);
}
if (priv->vram.paddr) {
DEFINE_DMA_ATTRS(attrs);
dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
drm_mm_takedown(&priv->vram.mm);
dma_free_attrs(dev->dev, priv->vram.size, NULL,
priv->vram.paddr, &attrs);
}
component_unbind_all(dev->dev, dev);
dev->dev_private = NULL;
kfree(priv);
return 0;
}
static int get_mdp_ver(struct platform_device *pdev)
{
#ifdef CONFIG_OF
static const struct of_device_id match_types[] = { {
.compatible = "qcom,mdss_mdp",
.data = (void *)5,
}, {
/* end node */
} };
struct device *dev = &pdev->dev;
const struct of_device_id *match;
match = of_match_node(match_types, dev->of_node);
if (match)
return (int)match->data;
#endif
return 4;
}
static int msm_load(struct drm_device *dev, unsigned long flags)
{
struct platform_device *pdev = dev->platformdev;
struct msm_drm_private *priv;
struct msm_kms *kms;
int ret;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv) {
dev_err(dev->dev, "failed to allocate private data\n");
return -ENOMEM;
}
dev->dev_private = priv;
priv->wq = alloc_ordered_workqueue("msm", 0);
init_waitqueue_head(&priv->fence_event);
INIT_LIST_HEAD(&priv->inactive_list);
INIT_LIST_HEAD(&priv->fence_cbs);
drm_mode_config_init(dev);
/* if we have no IOMMU, then we need to use carveout allocator.
* Grab the entire CMA chunk carved out in early startup in
* mach-msm:
*/
if (!iommu_present(&platform_bus_type)) {
DEFINE_DMA_ATTRS(attrs);
unsigned long size;
void *p;
DBG("using %s VRAM carveout", vram);
size = memparse(vram, NULL);
priv->vram.size = size;
drm_mm_init(&priv->vram.mm, 0, (size >> PAGE_SHIFT) - 1);
dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
/* note that for no-kernel-mapping, the vaddr returned
* is bogus, but non-null if allocation succeeded:
*/
p = dma_alloc_attrs(dev->dev, size,
&priv->vram.paddr, GFP_KERNEL, &attrs);
if (!p) {
dev_err(dev->dev, "failed to allocate VRAM\n");
priv->vram.paddr = 0;
ret = -ENOMEM;
goto fail;
}
dev_info(dev->dev, "VRAM: %08x->%08x\n",
(uint32_t)priv->vram.paddr,
(uint32_t)(priv->vram.paddr + size));
}
platform_set_drvdata(pdev, dev);
/* Bind all our sub-components: */
ret = component_bind_all(dev->dev, dev);
if (ret)
return ret;
switch (get_mdp_ver(pdev)) {
case 4:
kms = mdp4_kms_init(dev);
break;
case 5:
kms = mdp5_kms_init(dev);
break;
default:
kms = ERR_PTR(-ENODEV);
break;
}
if (IS_ERR(kms)) {
/*
* NOTE: once we have GPU support, having no kms should not
* be considered fatal.. ideally we would still support gpu
* and (for example) use dmabuf/prime to share buffers with
* imx drm driver on iMX5
*/
dev_err(dev->dev, "failed to load kms\n");
ret = PTR_ERR(kms);
goto fail;
}
priv->kms = kms;
if (kms) {
pm_runtime_enable(dev->dev);
ret = kms->funcs->hw_init(kms);
if (ret) {
dev_err(dev->dev, "kms hw init failed: %d\n", ret);
goto fail;
}
}
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
dev->mode_config.funcs = &mode_config_funcs;
ret = drm_vblank_init(dev, priv->num_crtcs);
if (ret < 0) {
dev_err(dev->dev, "failed to initialize vblank\n");
goto fail;
}
pm_runtime_get_sync(dev->dev);
ret = drm_irq_install(dev, platform_get_irq(dev->platformdev, 0));
pm_runtime_put_sync(dev->dev);
if (ret < 0) {
dev_err(dev->dev, "failed to install IRQ handler\n");
goto fail;
}
#ifdef CONFIG_DRM_MSM_FBDEV
priv->fbdev = msm_fbdev_init(dev);
#endif
ret = msm_debugfs_late_init(dev);
if (ret)
goto fail;
drm_kms_helper_poll_init(dev);
return 0;
fail:
msm_unload(dev);
return ret;
}
static void load_gpu(struct drm_device *dev)
{
static DEFINE_MUTEX(init_lock);
struct msm_drm_private *priv = dev->dev_private;
mutex_lock(&init_lock);
if (!priv->gpu)
priv->gpu = adreno_load_gpu(dev);
mutex_unlock(&init_lock);
}
static int msm_open(struct drm_device *dev, struct drm_file *file)
{
struct msm_file_private *ctx;
/* For now, load gpu on open.. to avoid the requirement of having
* firmware in the initrd.
*/
load_gpu(dev);
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
file->driver_priv = ctx;
return 0;
}
static void msm_preclose(struct drm_device *dev, struct drm_file *file)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_file_private *ctx = file->driver_priv;
struct msm_kms *kms = priv->kms;
if (kms)
kms->funcs->preclose(kms, file);
mutex_lock(&dev->struct_mutex);
if (ctx == priv->lastctx)
priv->lastctx = NULL;
mutex_unlock(&dev->struct_mutex);
kfree(ctx);
}
static void msm_lastclose(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
if (priv->fbdev)
drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev);
}
static irqreturn_t msm_irq(int irq, void *arg)
{
struct drm_device *dev = arg;
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
BUG_ON(!kms);
return kms->funcs->irq(kms);
}
static void msm_irq_preinstall(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
BUG_ON(!kms);
kms->funcs->irq_preinstall(kms);
}
static int msm_irq_postinstall(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
BUG_ON(!kms);
return kms->funcs->irq_postinstall(kms);
}
static void msm_irq_uninstall(struct drm_device *dev)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
BUG_ON(!kms);
kms->funcs->irq_uninstall(kms);
}
static int msm_enable_vblank(struct drm_device *dev, int crtc_id)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
if (!kms)
return -ENXIO;
DBG("dev=%p, crtc=%d", dev, crtc_id);
return kms->funcs->enable_vblank(kms, priv->crtcs[crtc_id]);
}
static void msm_disable_vblank(struct drm_device *dev, int crtc_id)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
if (!kms)
return;
DBG("dev=%p, crtc=%d", dev, crtc_id);
kms->funcs->disable_vblank(kms, priv->crtcs[crtc_id]);
}
/*
* DRM debugfs:
*/
#ifdef CONFIG_DEBUG_FS
static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
if (gpu) {
seq_printf(m, "%s Status:\n", gpu->name);
gpu->funcs->show(gpu, m);
}
return 0;
}
static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
if (gpu) {
seq_printf(m, "Active Objects (%s):\n", gpu->name);
msm_gem_describe_objects(&gpu->active_list, m);
}
seq_printf(m, "Inactive Objects:\n");
msm_gem_describe_objects(&priv->inactive_list, m);
return 0;
}
static int msm_mm_show(struct drm_device *dev, struct seq_file *m)
{
return drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
}
static int msm_fb_show(struct drm_device *dev, struct seq_file *m)
{
struct msm_drm_private *priv = dev->dev_private;
struct drm_framebuffer *fb, *fbdev_fb = NULL;
if (priv->fbdev) {
seq_printf(m, "fbcon ");
fbdev_fb = priv->fbdev->fb;
msm_framebuffer_describe(fbdev_fb, m);
}
mutex_lock(&dev->mode_config.fb_lock);
list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
if (fb == fbdev_fb)
continue;
seq_printf(m, "user ");
msm_framebuffer_describe(fb, m);
}
mutex_unlock(&dev->mode_config.fb_lock);
return 0;
}
static int show_locked(struct seq_file *m, void *arg)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_device *dev = node->minor->dev;
int (*show)(struct drm_device *dev, struct seq_file *m) =
node->info_ent->data;
int ret;
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
return ret;
ret = show(dev, m);
mutex_unlock(&dev->struct_mutex);
return ret;
}
static struct drm_info_list msm_debugfs_list[] = {
{"gpu", show_locked, 0, msm_gpu_show},
{"gem", show_locked, 0, msm_gem_show},
{ "mm", show_locked, 0, msm_mm_show },
{ "fb", show_locked, 0, msm_fb_show },
};
static int late_init_minor(struct drm_minor *minor)
{
int ret;
if (!minor)
return 0;
ret = msm_rd_debugfs_init(minor);
if (ret) {
dev_err(minor->dev->dev, "could not install rd debugfs\n");
return ret;
}
ret = msm_perf_debugfs_init(minor);
if (ret) {
dev_err(minor->dev->dev, "could not install perf debugfs\n");
return ret;
}
return 0;
}
int msm_debugfs_late_init(struct drm_device *dev)
{
int ret;
ret = late_init_minor(dev->primary);
if (ret)
return ret;
ret = late_init_minor(dev->render);
if (ret)
return ret;
ret = late_init_minor(dev->control);
return ret;
}
static int msm_debugfs_init(struct drm_minor *minor)
{
struct drm_device *dev = minor->dev;
int ret;
ret = drm_debugfs_create_files(msm_debugfs_list,
ARRAY_SIZE(msm_debugfs_list),
minor->debugfs_root, minor);
if (ret) {
dev_err(dev->dev, "could not install msm_debugfs_list\n");
return ret;
}
return 0;
}
static void msm_debugfs_cleanup(struct drm_minor *minor)
{
drm_debugfs_remove_files(msm_debugfs_list,
ARRAY_SIZE(msm_debugfs_list), minor);
if (!minor->dev->dev_private)
return;
msm_rd_debugfs_cleanup(minor);
msm_perf_debugfs_cleanup(minor);
}
#endif
/*
* Fences:
*/
int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
struct timespec *timeout)
{
struct msm_drm_private *priv = dev->dev_private;
int ret;
if (!priv->gpu)
return 0;
if (fence > priv->gpu->submitted_fence) {
DRM_ERROR("waiting on invalid fence: %u (of %u)\n",
fence, priv->gpu->submitted_fence);
return -EINVAL;
}
if (!timeout) {
/* no-wait: */
ret = fence_completed(dev, fence) ? 0 : -EBUSY;
} else {
unsigned long timeout_jiffies = timespec_to_jiffies(timeout);
unsigned long start_jiffies = jiffies;
unsigned long remaining_jiffies;
if (time_after(start_jiffies, timeout_jiffies))
remaining_jiffies = 0;
else
remaining_jiffies = timeout_jiffies - start_jiffies;
ret = wait_event_interruptible_timeout(priv->fence_event,
fence_completed(dev, fence),
remaining_jiffies);
if (ret == 0) {
DBG("timeout waiting for fence: %u (completed: %u)",
fence, priv->completed_fence);
ret = -ETIMEDOUT;
} else if (ret != -ERESTARTSYS) {
ret = 0;
}
}
return ret;
}
/* called from workqueue */
void msm_update_fence(struct drm_device *dev, uint32_t fence)
{
struct msm_drm_private *priv = dev->dev_private;
mutex_lock(&dev->struct_mutex);
priv->completed_fence = max(fence, priv->completed_fence);
while (!list_empty(&priv->fence_cbs)) {
struct msm_fence_cb *cb;
cb = list_first_entry(&priv->fence_cbs,
struct msm_fence_cb, work.entry);
if (cb->fence > priv->completed_fence)
break;
list_del_init(&cb->work.entry);
queue_work(priv->wq, &cb->work);
}
mutex_unlock(&dev->struct_mutex);
wake_up_all(&priv->fence_event);
}
void __msm_fence_worker(struct work_struct *work)
{
struct msm_fence_cb *cb = container_of(work, struct msm_fence_cb, work);
cb->func(cb);
}
/*
* DRM ioctls:
*/
static int msm_ioctl_get_param(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct msm_drm_private *priv = dev->dev_private;
struct drm_msm_param *args = data;
struct msm_gpu *gpu;
/* for now, we just have 3d pipe.. eventually this would need to
* be more clever to dispatch to appropriate gpu module:
*/
if (args->pipe != MSM_PIPE_3D0)
return -EINVAL;
gpu = priv->gpu;
if (!gpu)
return -ENXIO;
return gpu->funcs->get_param(gpu, args->param, &args->value);
}
static int msm_ioctl_gem_new(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_msm_gem_new *args = data;
if (args->flags & ~MSM_BO_FLAGS) {
DRM_ERROR("invalid flags: %08x\n", args->flags);
return -EINVAL;
}
return msm_gem_new_handle(dev, file, args->size,
args->flags, &args->handle);
}
#define TS(t) ((struct timespec){ .tv_sec = (t).tv_sec, .tv_nsec = (t).tv_nsec })
static int msm_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_msm_gem_cpu_prep *args = data;
struct drm_gem_object *obj;
int ret;
if (args->op & ~MSM_PREP_FLAGS) {
DRM_ERROR("invalid op: %08x\n", args->op);
return -EINVAL;
}
obj = drm_gem_object_lookup(dev, file, args->handle);
if (!obj)
return -ENOENT;
ret = msm_gem_cpu_prep(obj, args->op, &TS(args->timeout));
drm_gem_object_unreference_unlocked(obj);
return ret;
}
static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_msm_gem_cpu_fini *args = data;
struct drm_gem_object *obj;
int ret;
obj = drm_gem_object_lookup(dev, file, args->handle);
if (!obj)
return -ENOENT;
ret = msm_gem_cpu_fini(obj);
drm_gem_object_unreference_unlocked(obj);
return ret;
}
static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_msm_gem_info *args = data;
struct drm_gem_object *obj;
int ret = 0;
if (args->pad)
return -EINVAL;
obj = drm_gem_object_lookup(dev, file, args->handle);
if (!obj)
return -ENOENT;
args->offset = msm_gem_mmap_offset(obj);
drm_gem_object_unreference_unlocked(obj);
return ret;
}
static int msm_ioctl_wait_fence(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_msm_wait_fence *args = data;
if (args->pad) {
DRM_ERROR("invalid pad: %08x\n", args->pad);
return -EINVAL;
}
return msm_wait_fence_interruptable(dev, args->fence,
&TS(args->timeout));
}
static const struct drm_ioctl_desc msm_ioctls[] = {
DRM_IOCTL_DEF_DRV(MSM_GET_PARAM, msm_ioctl_get_param, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(MSM_GEM_NEW, msm_ioctl_gem_new, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(MSM_GEM_INFO, msm_ioctl_gem_info, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_PREP, msm_ioctl_gem_cpu_prep, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(MSM_GEM_CPU_FINI, msm_ioctl_gem_cpu_fini, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(MSM_GEM_SUBMIT, msm_ioctl_gem_submit, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(MSM_WAIT_FENCE, msm_ioctl_wait_fence, DRM_UNLOCKED|DRM_AUTH|DRM_RENDER_ALLOW),
};
static const struct vm_operations_struct vm_ops = {
.fault = msm_gem_fault,
.open = drm_gem_vm_open,
.close = drm_gem_vm_close,
};
static const struct file_operations fops = {
.owner = THIS_MODULE,
.open = drm_open,
.release = drm_release,
.unlocked_ioctl = drm_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
.poll = drm_poll,
.read = drm_read,
.llseek = no_llseek,
.mmap = msm_gem_mmap,
};
static struct drm_driver msm_driver = {
.driver_features = DRIVER_HAVE_IRQ |
DRIVER_GEM |
DRIVER_PRIME |
DRIVER_RENDER |
DRIVER_MODESET,
.load = msm_load,
.unload = msm_unload,
.open = msm_open,
.preclose = msm_preclose,
.lastclose = msm_lastclose,
.set_busid = drm_platform_set_busid,
.irq_handler = msm_irq,
.irq_preinstall = msm_irq_preinstall,
.irq_postinstall = msm_irq_postinstall,
.irq_uninstall = msm_irq_uninstall,
.get_vblank_counter = drm_vblank_count,
.enable_vblank = msm_enable_vblank,
.disable_vblank = msm_disable_vblank,
.gem_free_object = msm_gem_free_object,
.gem_vm_ops = &vm_ops,
.dumb_create = msm_gem_dumb_create,
.dumb_map_offset = msm_gem_dumb_map_offset,
.dumb_destroy = drm_gem_dumb_destroy,
.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_export = drm_gem_prime_export,
.gem_prime_import = drm_gem_prime_import,
.gem_prime_pin = msm_gem_prime_pin,
.gem_prime_unpin = msm_gem_prime_unpin,
.gem_prime_get_sg_table = msm_gem_prime_get_sg_table,
.gem_prime_import_sg_table = msm_gem_prime_import_sg_table,
.gem_prime_vmap = msm_gem_prime_vmap,
.gem_prime_vunmap = msm_gem_prime_vunmap,
#ifdef CONFIG_DEBUG_FS
.debugfs_init = msm_debugfs_init,
.debugfs_cleanup = msm_debugfs_cleanup,
#endif
.ioctls = msm_ioctls,
.num_ioctls = DRM_MSM_NUM_IOCTLS,
.fops = &fops,
.name = "msm",
.desc = "MSM Snapdragon DRM",
.date = "20130625",
.major = 1,
.minor = 0,
};
#ifdef CONFIG_PM_SLEEP
static int msm_pm_suspend(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
drm_kms_helper_poll_disable(ddev);
return 0;
}
static int msm_pm_resume(struct device *dev)
{
struct drm_device *ddev = dev_get_drvdata(dev);
drm_kms_helper_poll_enable(ddev);
return 0;
}
#endif
static const struct dev_pm_ops msm_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(msm_pm_suspend, msm_pm_resume)
};
/*
* Componentized driver support:
*/
#ifdef CONFIG_OF
/* NOTE: the CONFIG_OF case duplicates the same code as exynos or imx
* (or probably any other).. so probably some room for some helpers
*/
static int compare_of(struct device *dev, void *data)
{
return dev->of_node == data;
}
static int add_components(struct device *dev, struct component_match **matchptr,
const char *name)
{
struct device_node *np = dev->of_node;
unsigned i;
for (i = 0; ; i++) {
struct device_node *node;
node = of_parse_phandle(np, name, i);
if (!node)
break;
component_match_add(dev, matchptr, compare_of, node);
}
return 0;
}
#else
static int compare_dev(struct device *dev, void *data)
{
return dev == data;
}
#endif
static int msm_drm_bind(struct device *dev)
{
return drm_platform_init(&msm_driver, to_platform_device(dev));
}
static void msm_drm_unbind(struct device *dev)
{
drm_put_dev(platform_get_drvdata(to_platform_device(dev)));
}
static const struct component_master_ops msm_drm_ops = {
.bind = msm_drm_bind,
.unbind = msm_drm_unbind,
};
/*
* Platform driver:
*/
static int msm_pdev_probe(struct platform_device *pdev)
{
struct component_match *match = NULL;
#ifdef CONFIG_OF
add_components(&pdev->dev, &match, "connectors");
add_components(&pdev->dev, &match, "gpus");
#else
/* For non-DT case, it kinda sucks. We don't actually have a way
* to know whether or not we are waiting for certain devices (or if
* they are simply not present). But for non-DT we only need to
* care about apq8064/apq8060/etc (all mdp4/a3xx):
*/
static const char *devnames[] = {
"hdmi_msm.0", "kgsl-3d0.0",
};
int i;
DBG("Adding components..");
for (i = 0; i < ARRAY_SIZE(devnames); i++) {
struct device *dev;
dev = bus_find_device_by_name(&platform_bus_type,
NULL, devnames[i]);
if (!dev) {
dev_info(&pdev->dev, "still waiting for %s\n", devnames[i]);
return -EPROBE_DEFER;
}
component_match_add(&pdev->dev, &match, compare_dev, dev);
}
#endif
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
return component_master_add_with_match(&pdev->dev, &msm_drm_ops, match);
}
static int msm_pdev_remove(struct platform_device *pdev)
{
component_master_del(&pdev->dev, &msm_drm_ops);
return 0;
}
static const struct platform_device_id msm_id[] = {
{ "mdp", 0 },
{ }
};
static const struct of_device_id dt_match[] = {
{ .compatible = "qcom,mdp" }, /* mdp4 */
{ .compatible = "qcom,mdss_mdp" }, /* mdp5 */
{}
};
MODULE_DEVICE_TABLE(of, dt_match);
static struct platform_driver msm_platform_driver = {
.probe = msm_pdev_probe,
.remove = msm_pdev_remove,
.driver = {
.owner = THIS_MODULE,
.name = "msm",
.of_match_table = dt_match,
.pm = &msm_pm_ops,
},
.id_table = msm_id,
};
static int __init msm_drm_register(void)
{
DBG("init");
hdmi_register();
adreno_register();
return platform_driver_register(&msm_platform_driver);
}
static void __exit msm_drm_unregister(void)
{
DBG("fini");
platform_driver_unregister(&msm_platform_driver);
hdmi_unregister();
adreno_unregister();
}
module_init(msm_drm_register);
module_exit(msm_drm_unregister);
MODULE_AUTHOR("Rob Clark <robdclark@gmail.com");
MODULE_DESCRIPTION("MSM DRM Driver");
MODULE_LICENSE("GPL");
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