diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2021-12-01 02:23:15 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-12-16 14:07:07 +0100 |
| commit | 6b6776e2ab8ac7086cf31ad339411df7681715b7 (patch) | |
| tree | b084eddd879c84c74c8549a47335d0a40843aaf3 /drivers/gpu/host1x/debug.c | |
| parent | d53830eec05561a0e9918fff8df3861bde74d159 (diff) | |
gpu: host1x: Add initial runtime PM and OPP support
Add runtime PM and OPP support to the Host1x driver. For the starter we
will keep host1x always-on because dynamic power management require a major
refactoring of the driver code since lot's of code paths are missing the
RPM handling and we're going to remove some of these paths in the future.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30
Tested-by: Paul Fertser <fercerpav@gmail.com> # PAZ00 T20
Tested-by: Nicolas Chauvet <kwizart@gmail.com> # PAZ00 T20 and TK1 T124
Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/host1x/debug.c')
| -rw-r--r-- | drivers/gpu/host1x/debug.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/debug.c b/drivers/gpu/host1x/debug.c index 8a14880c61bb..18d9c8d206e3 100644 --- a/drivers/gpu/host1x/debug.c +++ b/drivers/gpu/host1x/debug.c @@ -7,6 +7,7 @@ */ #include <linux/debugfs.h> +#include <linux/pm_runtime.h> #include <linux/seq_file.h> #include <linux/uaccess.h> @@ -52,6 +53,11 @@ static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo) { struct host1x *m = dev_get_drvdata(ch->dev->parent); struct output *o = data; + int err; + + err = pm_runtime_resume_and_get(m->dev); + if (err < 0) + return err; mutex_lock(&ch->cdma.lock); mutex_lock(&debug_lock); @@ -64,6 +70,8 @@ static int show_channel(struct host1x_channel *ch, void *data, bool show_fifo) mutex_unlock(&debug_lock); mutex_unlock(&ch->cdma.lock); + pm_runtime_put(m->dev); + return 0; } @@ -71,9 +79,14 @@ static void show_syncpts(struct host1x *m, struct output *o) { struct list_head *pos; unsigned int i; + int err; host1x_debug_output(o, "---- syncpts ----\n"); + err = pm_runtime_resume_and_get(m->dev); + if (err < 0) + return; + 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); @@ -101,6 +114,8 @@ static void show_syncpts(struct host1x *m, struct output *o) base_val); } + pm_runtime_put(m->dev); + host1x_debug_output(o, "\n"); } |