gpu: host1x: Whitespace cleanup for readability
Insert a number of blank lines in places where they increase readability
of the code. Also collapse various variable declarations to shorten some
functions and finally rewrite some code for readability.
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c
index b83b0a0..c5d82a8 100644
--- a/drivers/gpu/host1x/cdma.c
+++ b/drivers/gpu/host1x/cdma.c
@@ -134,14 +134,19 @@
enum cdma_event event)
{
for (;;) {
+ struct push_buffer *pb = &cdma->push_buffer;
unsigned int space;
- if (event == CDMA_EVENT_SYNC_QUEUE_EMPTY)
+ switch (event) {
+ case CDMA_EVENT_SYNC_QUEUE_EMPTY:
space = list_empty(&cdma->sync_queue) ? 1 : 0;
- else if (event == CDMA_EVENT_PUSH_BUFFER_SPACE) {
- struct push_buffer *pb = &cdma->push_buffer;
+ break;
+
+ case CDMA_EVENT_PUSH_BUFFER_SPACE:
space = host1x_pushbuffer_space(pb);
- } else {
+ break;
+
+ default:
WARN_ON(1);
return -EINVAL;
}
@@ -159,12 +164,14 @@
mutex_lock(&cdma->lock);
continue;
}
+
cdma->event = event;
mutex_unlock(&cdma->lock);
down(&cdma->sem);
mutex_lock(&cdma->lock);
}
+
return 0;
}
@@ -234,6 +241,7 @@
/* Start timer on next pending syncpt */
if (job->timeout)
cdma_start_timer_locked(cdma, job);
+
break;
}
@@ -249,6 +257,7 @@
struct push_buffer *pb = &cdma->push_buffer;
host1x_pushbuffer_pop(pb, job->num_slots);
+
if (cdma->event == CDMA_EVENT_PUSH_BUFFER_SPACE)
signal = true;
}
@@ -270,11 +279,9 @@
void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma,
struct device *dev)
{
- u32 restart_addr;
- u32 syncpt_incrs;
- struct host1x_job *job = NULL;
- u32 syncpt_val;
struct host1x *host1x = cdma_to_host1x(cdma);
+ u32 restart_addr, syncpt_incrs, syncpt_val;
+ struct host1x_job *job = NULL;
syncpt_val = host1x_syncpt_load(cdma->timeout.syncpt);
@@ -378,6 +385,7 @@
err = host1x_pushbuffer_init(&cdma->push_buffer);
if (err)
return err;
+
return 0;
}
@@ -422,6 +430,7 @@
}
}
}
+
if (!cdma->running)
host1x_hw_cdma_start(host1x, cdma);
@@ -452,6 +461,7 @@
slots_free = host1x_cdma_wait_locked(cdma,
CDMA_EVENT_PUSH_BUFFER_SPACE);
}
+
cdma->slots_free = slots_free - 1;
cdma->slots_used++;
host1x_pushbuffer_push(pb, op1, op2);
diff --git a/drivers/gpu/host1x/debug.c b/drivers/gpu/host1x/debug.c
index 7bb86b92..d9330fc 100644
--- a/drivers/gpu/host1x/debug.c
+++ b/drivers/gpu/host1x/debug.c
@@ -39,6 +39,7 @@
va_start(args, fmt);
len = vsnprintf(o->buf, sizeof(o->buf), fmt, args);
va_end(args);
+
o->fn(o->ctx, o->buf, len);
}
@@ -48,13 +49,17 @@
struct output *o = data;
mutex_lock(&ch->reflock);
+
if (ch->refcount) {
mutex_lock(&ch->cdma.lock);
+
if (show_fifo)
host1x_hw_show_channel_fifo(m, ch, o);
+
host1x_hw_show_channel_cdma(m, ch, o);
mutex_unlock(&ch->cdma.lock);
}
+
mutex_unlock(&ch->reflock);
return 0;
@@ -65,6 +70,7 @@
unsigned int i;
host1x_debug_output(o, "---- syncpts ----\n");
+
for (i = 0; i < host1x_syncpt_nb_pts(m); i++) {
u32 max = host1x_syncpt_read_max(m->syncpt + i);
u32 min = host1x_syncpt_load(m->syncpt + i);
@@ -118,7 +124,9 @@
.fn = write_to_seqfile,
.ctx = s
};
+
show_all(s->private, &o);
+
return 0;
}
@@ -128,7 +136,9 @@
.fn = write_to_seqfile,
.ctx = s
};
+
show_all_no_fifo(s->private, &o);
+
return 0;
}
@@ -138,10 +148,10 @@
}
static const struct file_operations host1x_debug_all_fops = {
- .open = host1x_debug_open_all,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+ .open = host1x_debug_open_all,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
};
static int host1x_debug_open(struct inode *inode, struct file *file)
@@ -150,10 +160,10 @@
}
static const struct file_operations host1x_debug_fops = {
- .open = host1x_debug_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
+ .open = host1x_debug_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
};
static void host1x_debugfs_init(struct host1x *host1x)
@@ -205,6 +215,7 @@
struct output o = {
.fn = write_to_printk
};
+
show_all(host1x, &o);
}
@@ -213,5 +224,6 @@
struct output o = {
.fn = write_to_printk
};
+
show_syncpts(host1x, &o);
}
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index 320caf9..a62317a 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -63,13 +63,13 @@
}
static const struct host1x_info host1x01_info = {
- .nb_channels = 8,
- .nb_pts = 32,
- .nb_mlocks = 16,
- .nb_bases = 8,
- .init = host1x01_init,
- .sync_offset = 0x3000,
- .dma_mask = DMA_BIT_MASK(32),
+ .nb_channels = 8,
+ .nb_pts = 32,
+ .nb_mlocks = 16,
+ .nb_bases = 8,
+ .init = host1x01_init,
+ .sync_offset = 0x3000,
+ .dma_mask = DMA_BIT_MASK(32),
};
static const struct host1x_info host1x02_info = {
diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c
index e0db006..5c39f1b 100644
--- a/drivers/gpu/host1x/hw/cdma_hw.c
+++ b/drivers/gpu/host1x/hw/cdma_hw.c
@@ -58,6 +58,7 @@
&pb->phys, getptr);
getptr = (getptr + 8) & (pb->size_bytes - 1);
}
+
wmb();
}
@@ -162,12 +163,14 @@
struct host1x_channel *ch = cdma_to_channel(cdma);
mutex_lock(&cdma->lock);
+
if (cdma->running) {
host1x_cdma_wait_locked(cdma, CDMA_EVENT_SYNC_QUEUE_EMPTY);
host1x_ch_writel(ch, HOST1X_CHANNEL_DMACTRL_DMASTOP,
HOST1X_CHANNEL_DMACTRL);
cdma->running = false;
}
+
mutex_unlock(&cdma->lock);
}
@@ -231,14 +234,11 @@
*/
static void cdma_timeout_handler(struct work_struct *work)
{
+ u32 prev_cmdproc, cmdproc_stop, syncpt_val;
struct host1x_cdma *cdma;
struct host1x *host1x;
struct host1x_channel *ch;
- u32 syncpt_val;
-
- u32 prev_cmdproc, cmdproc_stop;
-
cdma = container_of(to_delayed_work(work), struct host1x_cdma,
timeout.wq);
host1x = cdma_to_host1x(cdma);
@@ -278,8 +278,8 @@
}
dev_warn(host1x->dev, "%s: timeout: %u (%s), HW thresh %d, done %d\n",
- __func__, cdma->timeout.syncpt->id, cdma->timeout.syncpt->name,
- syncpt_val, cdma->timeout.syncpt_val);
+ __func__, cdma->timeout.syncpt->id, cdma->timeout.syncpt->name,
+ syncpt_val, cdma->timeout.syncpt_val);
/* stop HW, resetting channel/module */
host1x_hw_cdma_freeze(host1x, cdma);
@@ -306,6 +306,7 @@
{
if (cdma->timeout.initialized)
cancel_delayed_work(&cdma->timeout.wq);
+
cdma->timeout.initialized = false;
}
diff --git a/drivers/gpu/host1x/hw/channel_hw.c b/drivers/gpu/host1x/hw/channel_hw.c
index f359b7e..5e8df78 100644
--- a/drivers/gpu/host1x/hw/channel_hw.c
+++ b/drivers/gpu/host1x/hw/channel_hw.c
@@ -46,6 +46,7 @@
*/
for (i = 0; i < words; i += TRACE_MAX_LENGTH) {
u32 num_words = min(words - i, TRACE_MAX_LENGTH);
+
offset += i * sizeof(u32);
trace_host1x_cdma_push_gather(dev_name(dev), bo,
@@ -66,6 +67,7 @@
struct host1x_job_gather *g = &job->gathers[i];
u32 op1 = host1x_opcode_gather(g->words);
u32 op2 = g->base + g->offset;
+
trace_write_gather(cdma, g->bo, g->offset, op1 & 0xffff);
host1x_cdma_push(cdma, op1, op2);
}
diff --git a/drivers/gpu/host1x/hw/debug_hw.c b/drivers/gpu/host1x/hw/debug_hw.c
index d2c96dd..7a4a328 100644
--- a/drivers/gpu/host1x/hw/debug_hw.c
+++ b/drivers/gpu/host1x/hw/debug_hw.c
@@ -40,8 +40,7 @@
static unsigned int show_channel_command(struct output *o, u32 val)
{
- unsigned mask;
- unsigned subop;
+ unsigned int mask, subop;
switch (val >> 28) {
case HOST1X_OPCODE_SETCLASS:
@@ -200,14 +199,13 @@
if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) == HOST1X_CLASS_HOST1X &&
HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
- HOST1X_UCLASS_WAIT_SYNCPT)
+ HOST1X_UCLASS_WAIT_SYNCPT)
host1x_debug_output(o, "waiting on syncpt %d val %d\n",
cbread >> 24, cbread & 0xffffff);
else if (HOST1X_SYNC_CBSTAT_CBCLASS_V(cbstat) ==
- HOST1X_CLASS_HOST1X &&
- HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
- HOST1X_UCLASS_WAIT_SYNCPT_BASE) {
-
+ HOST1X_CLASS_HOST1X &&
+ HOST1X_SYNC_CBSTAT_CBOFFSET_V(cbstat) ==
+ HOST1X_UCLASS_WAIT_SYNCPT_BASE) {
base = (cbread >> 16) & 0xff;
baseval =
host1x_sync_readl(host, HOST1X_SYNC_SYNCPT_BASE(base));
@@ -293,6 +291,7 @@
unsigned int i;
host1x_debug_output(o, "---- mlocks ----\n");
+
for (i = 0; i < host1x_syncpt_nb_mlocks(host); i++) {
u32 owner =
host1x_sync_readl(host, HOST1X_SYNC_MLOCK_OWNER(i));
@@ -304,6 +303,7 @@
else
host1x_debug_output(o, "%u: unlocked\n", i);
}
+
host1x_debug_output(o, "\n");
}
diff --git a/drivers/gpu/host1x/hw/intr_hw.c b/drivers/gpu/host1x/hw/intr_hw.c
index f50c689..dacb800 100644
--- a/drivers/gpu/host1x/hw/intr_hw.c
+++ b/drivers/gpu/host1x/hw/intr_hw.c
@@ -72,8 +72,9 @@
}
}
-static int _host1x_intr_init_host_sync(struct host1x *host, u32 cpm,
- void (*syncpt_thresh_work)(struct work_struct *))
+static int
+_host1x_intr_init_host_sync(struct host1x *host, u32 cpm,
+ void (*syncpt_thresh_work)(struct work_struct *))
{
unsigned int i;
int err;
@@ -137,6 +138,7 @@
for (i = 0; i < host->info->nb_pts; i++)
cancel_work_sync(&host->syncpt[i].intr.work);
+
return 0;
}
diff --git a/drivers/gpu/host1x/hw/syncpt_hw.c b/drivers/gpu/host1x/hw/syncpt_hw.c
index 310f24f..c93f74f 100644
--- a/drivers/gpu/host1x/hw/syncpt_hw.c
+++ b/drivers/gpu/host1x/hw/syncpt_hw.c
@@ -88,6 +88,7 @@
if (!host1x_syncpt_client_managed(sp) &&
host1x_syncpt_idle(sp))
return -EINVAL;
+
host1x_sync_writel(host, BIT_MASK(sp->id),
HOST1X_SYNC_SYNCPT_CPU_INCR(reg_offset));
wmb();
@@ -98,10 +99,10 @@
/* remove a wait pointed to by patch_addr */
static int syncpt_patch_wait(struct host1x_syncpt *sp, void *patch_addr)
{
- u32 override = host1x_class_host_wait_syncpt(
- HOST1X_SYNCPT_RESERVED, 0);
+ u32 override = host1x_class_host_wait_syncpt(HOST1X_SYNCPT_RESERVED, 0);
*((u32 *)patch_addr) = override;
+
return 0;
}
diff --git a/drivers/gpu/host1x/job.c b/drivers/gpu/host1x/job.c
index 1bff367..a91b7c4 100644
--- a/drivers/gpu/host1x/job.c
+++ b/drivers/gpu/host1x/job.c
@@ -577,11 +577,12 @@
host1x_bo_unpin(unpin->bo, unpin->sgt);
host1x_bo_put(unpin->bo);
}
+
job->num_unpins = 0;
if (job->gather_copy_size)
dma_free_wc(job->channel->dev, job->gather_copy_size,
- job->gather_copy_mapped, job->gather_copy);
+ job->gather_copy_mapped, job->gather_copy);
}
EXPORT_SYMBOL(host1x_job_unpin);
diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
index 7c4848f..73b43c2 100644
--- a/drivers/gpu/host1x/syncpt.c
+++ b/drivers/gpu/host1x/syncpt.c
@@ -114,8 +114,10 @@
for (i = 0; i < host1x_syncpt_nb_pts(host); i++)
host1x_hw_syncpt_restore(host, sp_base + i);
+
for (i = 0; i < host1x_syncpt_nb_bases(host); i++)
host1x_hw_syncpt_restore_wait_base(host, sp_base + i);
+
wmb();
}
@@ -181,6 +183,7 @@
static bool syncpt_load_min_is_expired(struct host1x_syncpt *sp, u32 thresh)
{
host1x_hw_syncpt_load(sp->host, sp);
+
return host1x_syncpt_is_expired(sp, thresh);
}
@@ -188,7 +191,7 @@
* Main entrypoint for syncpoint value waits.
*/
int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, long timeout,
- u32 *value)
+ u32 *value)
{
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
void *ref;
@@ -203,6 +206,7 @@
if (host1x_syncpt_is_expired(sp, thresh)) {
if (value)
*value = host1x_syncpt_load(sp);
+
return 0;
}
@@ -211,6 +215,7 @@
if (host1x_syncpt_is_expired(sp, thresh)) {
if (value)
*value = val;
+
goto done;
}
@@ -241,20 +246,27 @@
/* wait for the syncpoint, or timeout, or signal */
while (timeout) {
long check = min_t(long, SYNCPT_CHECK_PERIOD, timeout);
- int remain = wait_event_interruptible_timeout(wq,
+ int remain;
+
+ remain = wait_event_interruptible_timeout(wq,
syncpt_load_min_is_expired(sp, thresh),
check);
if (remain > 0 || host1x_syncpt_is_expired(sp, thresh)) {
if (value)
*value = host1x_syncpt_load(sp);
+
err = 0;
+
break;
}
+
if (remain < 0) {
err = remain;
break;
}
+
timeout -= check;
+
if (timeout && check_count <= MAX_STUCK_CHECK_COUNT) {
dev_warn(sp->host->dev,
"%s: syncpoint id %u (%s) stuck waiting %d, timeout=%ld\n",
@@ -262,11 +274,14 @@
thresh, timeout);
host1x_debug_dump_syncpts(sp->host);
+
if (check_count == MAX_STUCK_CHECK_COUNT)
host1x_debug_dump(sp->host);
+
check_count++;
}
}
+
host1x_intr_put_ref(sp->host, sp->id, ref);
done:
@@ -283,6 +298,7 @@
u32 future_val;
smp_rmb();
+
current_val = (u32)atomic_read(&sp->min_val);
future_val = (u32)atomic_read(&sp->max_val);
@@ -381,6 +397,7 @@
unsigned long flags)
{
struct host1x *host = dev_get_drvdata(dev->parent);
+
return host1x_syncpt_alloc(host, dev, flags);
}
EXPORT_SYMBOL(host1x_syncpt_request);
@@ -415,6 +432,7 @@
u32 host1x_syncpt_read_max(struct host1x_syncpt *sp)
{
smp_rmb();
+
return (u32)atomic_read(&sp->max_val);
}
EXPORT_SYMBOL(host1x_syncpt_read_max);
@@ -425,6 +443,7 @@
u32 host1x_syncpt_read_min(struct host1x_syncpt *sp)
{
smp_rmb();
+
return (u32)atomic_read(&sp->min_val);
}
EXPORT_SYMBOL(host1x_syncpt_read_min);
@@ -454,6 +473,7 @@
{
if (host->info->nb_pts < id)
return NULL;
+
return host->syncpt + id;
}
EXPORT_SYMBOL(host1x_syncpt_get);