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Commit 13eee770 authored by Alexey Brodkin's avatar Alexey Brodkin Committed by Alexey Brodkin
Browse files

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: default avatarAlexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: default avatarLiviu Dudau <Liviu.Dudau@arm.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Jose Abreu <joabreu@synopsys.com>
parent dd24df65

drivers/gpu/drm/arc/arcpgu_drv.c

+29 −0
Original line number Diff line number Diff line
@@ -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)