summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/video/omap2/omapfb/omapfb-ioctl.c68
-rw-r--r--drivers/video/omap2/omapfb/omapfb-main.c40
-rw-r--r--drivers/video/omap2/omapfb/omapfb-sysfs.c87
-rw-r--r--drivers/video/omap2/omapfb/omapfb.h16
4 files changed, 79 insertions, 132 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c
index d30b45d7264..dccb158b0d0 100644
--- a/drivers/video/omap2/omapfb/omapfb-ioctl.c
+++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c
@@ -85,16 +85,6 @@ static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
goto out;
}
- /* Take the locks in a specific order to keep lockdep happy */
- if (old_rg->id < new_rg->id) {
- omapfb_get_mem_region(old_rg);
- omapfb_get_mem_region(new_rg);
- } else if (new_rg->id < old_rg->id) {
- omapfb_get_mem_region(new_rg);
- omapfb_get_mem_region(old_rg);
- } else
- omapfb_get_mem_region(old_rg);
-
if (pi->enabled && !new_rg->size) {
/*
* This plane's memory was freed, can't enable it
@@ -146,16 +136,6 @@ static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
goto undo;
}
- /* Release the locks in a specific order to keep lockdep happy */
- if (old_rg->id > new_rg->id) {
- omapfb_put_mem_region(old_rg);
- omapfb_put_mem_region(new_rg);
- } else if (new_rg->id > old_rg->id) {
- omapfb_put_mem_region(new_rg);
- omapfb_put_mem_region(old_rg);
- } else
- omapfb_put_mem_region(old_rg);
-
return 0;
undo:
@@ -166,15 +146,6 @@ static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
ovl->set_overlay_info(ovl, &old_info);
put_mem:
- /* Release the locks in a specific order to keep lockdep happy */
- if (old_rg->id > new_rg->id) {
- omapfb_put_mem_region(old_rg);
- omapfb_put_mem_region(new_rg);
- } else if (new_rg->id > old_rg->id) {
- omapfb_put_mem_region(new_rg);
- omapfb_put_mem_region(old_rg);
- } else
- omapfb_put_mem_region(old_rg);
out:
dev_err(fbdev->dev, "setup_plane failed\n");
@@ -224,10 +195,9 @@ static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
if (display && display->driver->sync)
display->driver->sync(display);
- rg = ofbi->region;
+ mutex_lock(&fbi->mm_lock);
- down_write_nested(&rg->lock, rg->id);
- atomic_inc(&rg->lock_count);
+ rg = ofbi->region;
if (rg->size == size && rg->type == mi->type)
goto out;
@@ -261,9 +231,7 @@ static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
}
out:
- atomic_dec(&rg->lock_count);
- up_write(&rg->lock);
-
+ mutex_unlock(&fbi->mm_lock);
return r;
}
@@ -272,14 +240,12 @@ static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
struct omapfb_info *ofbi = FB2OFB(fbi);
struct omapfb2_mem_region *rg;
- rg = omapfb_get_mem_region(ofbi->region);
+ rg = ofbi->region;
memset(mi, 0, sizeof(*mi));
mi->size = rg->size;
mi->type = rg->type;
- omapfb_put_mem_region(rg);
-
return 0;
}
@@ -318,14 +284,10 @@ int omapfb_set_update_mode(struct fb_info *fbi,
if (mode != OMAPFB_AUTO_UPDATE && mode != OMAPFB_MANUAL_UPDATE)
return -EINVAL;
- omapfb_lock(fbdev);
-
d = get_display_data(fbdev, display);
- if (d->update_mode == mode) {
- omapfb_unlock(fbdev);
+ if (d->update_mode == mode)
return 0;
- }
r = 0;
@@ -341,8 +303,6 @@ int omapfb_set_update_mode(struct fb_info *fbi,
r = -EINVAL;
}
- omapfb_unlock(fbdev);
-
return r;
}
@@ -357,14 +317,10 @@ int omapfb_get_update_mode(struct fb_info *fbi,
if (!display)
return -EINVAL;
- omapfb_lock(fbdev);
-
d = get_display_data(fbdev, display);
*mode = d->update_mode;
- omapfb_unlock(fbdev);
-
return 0;
}
@@ -424,13 +380,10 @@ static int omapfb_set_color_key(struct fb_info *fbi,
struct omapfb_color_key *ck)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
- struct omapfb2_device *fbdev = ofbi->fbdev;
int r;
int i;
struct omap_overlay_manager *mgr = NULL;
- omapfb_lock(fbdev);
-
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->manager) {
mgr = ofbi->overlays[i]->manager;
@@ -445,8 +398,6 @@ static int omapfb_set_color_key(struct fb_info *fbi,
r = _omapfb_set_color_key(mgr, ck);
err:
- omapfb_unlock(fbdev);
-
return r;
}
@@ -454,13 +405,10 @@ static int omapfb_get_color_key(struct fb_info *fbi,
struct omapfb_color_key *ck)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
- struct omapfb2_device *fbdev = ofbi->fbdev;
struct omap_overlay_manager *mgr = NULL;
int r = 0;
int i;
- omapfb_lock(fbdev);
-
for (i = 0; i < ofbi->num_overlays; i++) {
if (ofbi->overlays[i]->manager) {
mgr = ofbi->overlays[i]->manager;
@@ -475,8 +423,6 @@ static int omapfb_get_color_key(struct fb_info *fbi,
*ck = omapfb_color_keys[mgr->id];
err:
- omapfb_unlock(fbdev);
-
return r;
}
@@ -603,6 +549,8 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
int r = 0;
+ omapfb_lock(fbdev);
+
switch (cmd) {
case OMAPFB_SYNC_GFX:
DBG("ioctl SYNC_GFX\n");
@@ -908,6 +856,8 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
r = -EINVAL;
}
+ omapfb_unlock(fbdev);
+
if (r < 0)
DBG("ioctl failed: %d\n", r);
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index 85130fa7ae5..708f2cf9020 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -672,8 +672,6 @@ int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
DBG("check_fb_var %d\n", ofbi->id);
- WARN_ON(!atomic_read(&ofbi->region->lock_count));
-
r = fb_mode_to_dss_mode(var, &mode);
if (r) {
DBG("cannot convert var to omap dss mode\n");
@@ -855,8 +853,6 @@ int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
int rotation = var->rotate;
int i;
- WARN_ON(!atomic_read(&ofbi->region->lock_count));
-
for (i = 0; i < ofbi->num_overlays; i++) {
if (ovl != ofbi->overlays[i])
continue;
@@ -948,8 +944,6 @@ int omapfb_apply_changes(struct fb_info *fbi, int init)
fill_fb(fbi);
#endif
- WARN_ON(!atomic_read(&ofbi->region->lock_count));
-
for (i = 0; i < ofbi->num_overlays; i++) {
ovl = ofbi->overlays[i];
@@ -1008,15 +1002,16 @@ err:
static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
int r;
DBG("check_var(%d)\n", FB2OFB(fbi)->id);
- omapfb_get_mem_region(ofbi->region);
+ omapfb_lock(fbdev);
r = check_fb_var(fbi, var);
- omapfb_put_mem_region(ofbi->region);
+ omapfb_unlock(fbdev);
return r;
}
@@ -1025,11 +1020,12 @@ static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
static int omapfb_set_par(struct fb_info *fbi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
int r;
DBG("set_par(%d)\n", FB2OFB(fbi)->id);
- omapfb_get_mem_region(ofbi->region);
+ omapfb_lock(fbdev);
set_fb_fix(fbi);
@@ -1040,7 +1036,7 @@ static int omapfb_set_par(struct fb_info *fbi)
r = omapfb_apply_changes(fbi, 0);
out:
- omapfb_put_mem_region(ofbi->region);
+ omapfb_unlock(fbdev);
return r;
}
@@ -1049,6 +1045,7 @@ static int omapfb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *fbi)
{
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
struct fb_var_screeninfo new_var;
int r;
@@ -1064,11 +1061,11 @@ static int omapfb_pan_display(struct fb_var_screeninfo *var,
fbi->var = new_var;
- omapfb_get_mem_region(ofbi->region);
+ omapfb_lock(fbdev);
r = omapfb_apply_changes(fbi, 0);
- omapfb_put_mem_region(ofbi->region);
+ omapfb_unlock(fbdev);
return r;
}
@@ -1077,18 +1074,14 @@ static void mmap_user_open(struct vm_area_struct *vma)
{
struct omapfb2_mem_region *rg = vma->vm_private_data;
- omapfb_get_mem_region(rg);
atomic_inc(&rg->map_count);
- omapfb_put_mem_region(rg);
}
static void mmap_user_close(struct vm_area_struct *vma)
{
struct omapfb2_mem_region *rg = vma->vm_private_data;
- omapfb_get_mem_region(rg);
atomic_dec(&rg->map_count);
- omapfb_put_mem_region(rg);
}
static struct vm_operations_struct mmap_user_ops = {
@@ -1112,7 +1105,7 @@ static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
return -EINVAL;
off = vma->vm_pgoff << PAGE_SHIFT;
- rg = omapfb_get_mem_region(ofbi->region);
+ rg = ofbi->region;
start = omapfb_get_region_paddr(ofbi);
len = fix->smem_len;
@@ -1140,13 +1133,9 @@ static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
/* vm_ops.open won't be called for mmap itself. */
atomic_inc(&rg->map_count);
- omapfb_put_mem_region(rg);
-
return 0;
error:
- omapfb_put_mem_region(ofbi->region);
-
return r;
}
@@ -1914,7 +1903,6 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
ofbi->region = &fbdev->regions[i];
ofbi->region->id = i;
- init_rwsem(&ofbi->region->lock);
/* assign these early, so that fb alloc can use them */
ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
@@ -1946,12 +1934,8 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
/* setup fb_infos */
for (i = 0; i < fbdev->num_fbs; i++) {
struct fb_info *fbi = fbdev->fbs[i];
- struct omapfb_info *ofbi = FB2OFB(fbi);
- omapfb_get_mem_region(ofbi->region);
r = omapfb_fb_init(fbdev, fbi);
- omapfb_put_mem_region(ofbi->region);
-
if (r) {
dev_err(fbdev->dev, "failed to setup fb_info\n");
return r;
@@ -1983,12 +1967,8 @@ static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
for (i = 0; i < fbdev->num_fbs; i++) {
struct fb_info *fbi = fbdev->fbs[i];
- struct omapfb_info *ofbi = FB2OFB(fbi);
- omapfb_get_mem_region(ofbi->region);
r = omapfb_apply_changes(fbi, 1);
- omapfb_put_mem_region(ofbi->region);
-
if (r) {
dev_err(fbdev->dev, "failed to change mode\n");
return r;
diff --git a/drivers/video/omap2/omapfb/omapfb-sysfs.c b/drivers/video/omap2/omapfb/omapfb-sysfs.c
index 18fa9e1d003..be5eb074b7d 100644
--- a/drivers/video/omap2/omapfb/omapfb-sysfs.c
+++ b/drivers/video/omap2/omapfb/omapfb-sysfs.c
@@ -49,6 +49,7 @@ static ssize_t store_rotate_type(struct device *dev,
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
struct omapfb2_mem_region *rg;
int rot_type;
int r;
@@ -62,12 +63,13 @@ static ssize_t store_rotate_type(struct device *dev,
if (!lock_fb_info(fbi))
return -ENODEV;
+ omapfb_lock(fbdev);
r = 0;
if (rot_type == ofbi->rotation_type)
goto out;
- rg = omapfb_get_mem_region(ofbi->region);
+ rg = ofbi->region;
if (rg->size) {
r = -EBUSY;
@@ -81,8 +83,8 @@ static ssize_t store_rotate_type(struct device *dev,
* need to do any further parameter checking at this point.
*/
put_region:
- omapfb_put_mem_region(rg);
out:
+ omapfb_unlock(fbdev);
unlock_fb_info(fbi);
return r ? r : count;
@@ -104,6 +106,7 @@ static ssize_t store_mirror(struct device *dev,
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
bool mirror;
int r;
struct fb_var_screeninfo new_var;
@@ -114,11 +117,10 @@ static ssize_t store_mirror(struct device *dev,
if (!lock_fb_info(fbi))
return -ENODEV;
+ omapfb_lock(fbdev);
ofbi->mirror = mirror;
- omapfb_get_mem_region(ofbi->region);
-
memcpy(&new_var, &fbi->var, sizeof(new_var));
r = check_fb_var(fbi, &new_var);
if (r)
@@ -133,8 +135,7 @@ static ssize_t store_mirror(struct device *dev,
r = count;
out:
- omapfb_put_mem_region(ofbi->region);
-
+ omapfb_unlock(fbdev);
unlock_fb_info(fbi);
return r;
@@ -273,15 +274,11 @@ static ssize_t store_overlays(struct device *dev, struct device_attribute *attr,
DBG("detaching %d\n", ofbi->overlays[i]->id);
- omapfb_get_mem_region(ofbi->region);
-
omapfb_overlay_enable(ovl, 0);
if (ovl->manager)
ovl->manager->apply(ovl->manager);
- omapfb_put_mem_region(ofbi->region);
-
for (t = i + 1; t < ofbi->num_overlays; t++) {
ofbi->rotation[t-1] = ofbi->rotation[t];
ofbi->overlays[t-1] = ofbi->overlays[t];
@@ -314,12 +311,8 @@ static ssize_t store_overlays(struct device *dev, struct device_attribute *attr,
}
if (added) {
- omapfb_get_mem_region(ofbi->region);
-
r = omapfb_apply_changes(fbi, 0);
- omapfb_put_mem_region(ofbi->region);
-
if (r)
goto out;
}
@@ -337,11 +330,13 @@ static ssize_t show_overlays_rotate(struct device *dev,
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
ssize_t l = 0;
int t;
if (!lock_fb_info(fbi))
return -ENODEV;
+ omapfb_lock(fbdev);
for (t = 0; t < ofbi->num_overlays; t++) {
l += snprintf(buf + l, PAGE_SIZE - l, "%s%d",
@@ -350,6 +345,7 @@ static ssize_t show_overlays_rotate(struct device *dev,
l += snprintf(buf + l, PAGE_SIZE - l, "\n");
+ omapfb_unlock(fbdev);
unlock_fb_info(fbi);
return l;
@@ -360,6 +356,7 @@ static ssize_t store_overlays_rotate(struct device *dev,
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
int num_ovls = 0, r, i;
int len;
bool changed = false;
@@ -371,6 +368,7 @@ static ssize_t store_overlays_rotate(struct device *dev,
if (!lock_fb_info(fbi))
return -ENODEV;
+ omapfb_lock(fbdev);
if (len > 0) {
char *p = (char *)buf;
@@ -407,12 +405,7 @@ static ssize_t store_overlays_rotate(struct device *dev,
for (i = 0; i < num_ovls; ++i)
ofbi->rotation[i] = rotation[i];
- omapfb_get_mem_region(ofbi->region);
-
r = omapfb_apply_changes(fbi, 0);
-
- omapfb_put_mem_region(ofbi->region);
-
if (r)
goto out;
@@ -421,6 +414,7 @@ static ssize_t store_overlays_rotate(struct device *dev,
r = count;
out:
+ omapfb_unlock(fbdev);
unlock_fb_info(fbi);
return r;
@@ -431,8 +425,19 @@ static ssize_t show_size(struct device *dev,
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ int r;
- return snprintf(buf, PAGE_SIZE, "%lu\n", ofbi->region->size);
+ if (!lock_fb_info(fbi))
+ return -ENODEV;
+ omapfb_lock(fbdev);
+
+ r = snprintf(buf, PAGE_SIZE, "%lu\n", ofbi->region->size);
+
+ omapfb_unlock(fbdev);
+ unlock_fb_info(fbi);
+
+ return r;
}
static ssize_t store_size(struct device *dev, struct device_attribute *attr,
@@ -455,14 +460,14 @@ static ssize_t store_size(struct device *dev, struct device_attribute *attr,
if (!lock_fb_info(fbi))
return -ENODEV;
+ omapfb_lock(fbdev);
if (display && display->driver->sync)
display->driver->sync(display);
- rg = ofbi->region;
+ mutex_lock(&fbi->mm_lock);
- down_write_nested(&rg->lock, rg->id);
- atomic_inc(&rg->lock_count);
+ rg = ofbi->region;
if (atomic_read(&rg->map_count)) {
r = -EBUSY;
@@ -496,9 +501,8 @@ static ssize_t store_size(struct device *dev, struct device_attribute *attr,
r = count;
out:
- atomic_dec(&rg->lock_count);
- up_write(&rg->lock);
-
+ mutex_unlock(&fbi->mm_lock);
+ omapfb_unlock(fbdev);
unlock_fb_info(fbi);
return r;
@@ -509,8 +513,19 @@ static ssize_t show_phys(struct device *dev,
{
struct fb_info *fbi = dev_get_drvdata(dev);
struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
+ int r;
- return snprintf(buf, PAGE_SIZE, "%0x\n", ofbi->region->paddr);
+ if (!lock_fb_info(fbi))
+ return -ENODEV;
+ omapfb_lock(fbdev);
+
+ r = snprintf(buf, PAGE_SIZE, "%0x\n", ofbi->region->paddr);
+
+ omapfb_unlock(fbdev);
+ unlock_fb_info(fbi);
+
+ return r;
}
static ssize_t show_virt(struct device *dev,
@@ -526,11 +541,20 @@ static ssize_t show_upd_mode(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct fb_info *fbi = dev_get_drvdata(dev);
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
enum omapfb_update_mode mode;
int r;
+ if (!lock_fb_info(fbi))
+ return -ENODEV;
+ omapfb_lock(fbdev);
+
r = omapfb_get_update_mode(fbi, &mode);
+ omapfb_unlock(fbdev);
+ unlock_fb_info(fbi);
+
if (r)
return r;
@@ -541,6 +565,8 @@ static ssize_t store_upd_mode(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct fb_info *fbi = dev_get_drvdata(dev);
+ struct omapfb_info *ofbi = FB2OFB(fbi);
+ struct omapfb2_device *fbdev = ofbi->fbdev;
unsigned mode;
int r;
@@ -548,10 +574,17 @@ static ssize_t store_upd_mode(struct device *dev, struct device_attribute *attr,
if (r)
return r;
+ if (!lock_fb_info(fbi))
+ return -ENODEV;
+ omapfb_lock(fbdev);
+
r = omapfb_set_update_mode(fbi, mode);
if (r)
return r;
+ omapfb_unlock(fbdev);
+ unlock_fb_info(fbi);
+
return count;
}
diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h
index b93086f4306..71cd8bab31c 100644
--- a/drivers/video/omap2/omapfb/omapfb.h
+++ b/drivers/video/omap2/omapfb/omapfb.h
@@ -62,8 +62,6 @@ struct omapfb2_mem_region {
bool alloc; /* allocated by the driver */
bool map; /* kernel mapped by the driver */
atomic_t map_count;
- struct rw_semaphore lock;
- atomic_t lock_count;
};
/* appended to fb_info */
@@ -191,18 +189,4 @@ static inline int omapfb_overlay_enable(struct omap_overlay *ovl,
return ovl->disable(ovl);
}
-static inline struct omapfb2_mem_region *
-omapfb_get_mem_region(struct omapfb2_mem_region *rg)
-{
- down_read_nested(&rg->lock, rg->id);
- atomic_inc(&rg->lock_count);
- return rg;
-}
-
-static inline void omapfb_put_mem_region(struct omapfb2_mem_region *rg)
-{
- atomic_dec(&rg->lock_count);
- up_read(&rg->lock);
-}
-
#endif
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 03:43:07 +0000