diff options
| author | Alexey Brodkin <Alexey.Brodkin@synopsys.com> | 2017-03-03 15:30:35 +0300 |
|---|---|---|
| committer | Alexey Brodkin <abrodkin@synopsys.com> | 2017-08-03 00:11:00 +0300 |
| commit | 13eee7706549333d7d73638e99a264b085df852f (patch) | |
| tree | 8edfed855fe25393147a7885df7babe14db6f8ca /drivers/gpu/drm/arc | |
| parent | dd24df657075fdf1e850612ea50634816f3c3581 (diff) | |
| download | linux-13eee7706549333d7d73638e99a264b085df852f.tar.xz | |
drm/arcpgu: Opt in debugfs
This change adopts debugfs usage for outputting useful data.
As of today we print:
* Mode and real HW clock values
* Standard FB info
Code is heavily borrowed from ARM's HDLCD thus adding Liviu in Cc.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jose Abreu <joabreu@synopsys.com>
Diffstat (limited to 'drivers/gpu/drm/arc')
| -rw-r--r-- | drivers/gpu/drm/arc/arcpgu_drv.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arc/arcpgu_drv.c b/drivers/gpu/drm/arc/arcpgu_drv.c index 3e43a5d4fb09..b43ddf00b50e 100644 --- a/drivers/gpu/drm/arc/arcpgu_drv.c +++ b/drivers/gpu/drm/arc/arcpgu_drv.c @@ -160,6 +160,32 @@ static int arcpgu_unload(struct drm_device *drm) return 0; } +#ifdef CONFIG_DEBUG_FS +static int arcpgu_show_pxlclock(struct seq_file *m, void *arg) +{ + struct drm_info_node *node = (struct drm_info_node *)m->private; + struct drm_device *drm = node->minor->dev; + struct arcpgu_drm_private *arcpgu = drm->dev_private; + unsigned long clkrate = clk_get_rate(arcpgu->clk); + unsigned long mode_clock = arcpgu->crtc.mode.crtc_clock * 1000; + + seq_printf(m, "hw : %lu\n", clkrate); + seq_printf(m, "mode: %lu\n", mode_clock); + return 0; +} + +static struct drm_info_list arcpgu_debugfs_list[] = { + { "clocks", arcpgu_show_pxlclock, 0 }, + { "fb", drm_fb_cma_debugfs_show, 0 }, +}; + +static int arcpgu_debugfs_init(struct drm_minor *minor) +{ + return drm_debugfs_create_files(arcpgu_debugfs_list, + ARRAY_SIZE(arcpgu_debugfs_list), minor->debugfs_root, minor); +} +#endif + static struct drm_driver arcpgu_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC, @@ -185,6 +211,9 @@ static struct drm_driver arcpgu_drm_driver = { .gem_prime_vmap = drm_gem_cma_prime_vmap, .gem_prime_vunmap = drm_gem_cma_prime_vunmap, .gem_prime_mmap = drm_gem_cma_prime_mmap, +#ifdef CONFIG_DEBUG_FS + .debugfs_init = arcpgu_debugfs_init, +#endif }; static int arcpgu_probe(struct platform_device *pdev) |