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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>
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@ -160,6 +160,32 @@ static int arcpgu_unload(struct drm_device *drm)
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return 0;
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return 0;
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}
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}
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#ifdef CONFIG_DEBUG_FS
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static int arcpgu_show_pxlclock(struct seq_file *m, void *arg)
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{
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struct drm_info_node *node = (struct drm_info_node *)m->private;
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struct drm_device *drm = node->minor->dev;
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struct arcpgu_drm_private *arcpgu = drm->dev_private;
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unsigned long clkrate = clk_get_rate(arcpgu->clk);
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unsigned long mode_clock = arcpgu->crtc.mode.crtc_clock * 1000;
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seq_printf(m, "hw : %lu\n", clkrate);
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seq_printf(m, "mode: %lu\n", mode_clock);
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return 0;
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}
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static struct drm_info_list arcpgu_debugfs_list[] = {
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{ "clocks", arcpgu_show_pxlclock, 0 },
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{ "fb", drm_fb_cma_debugfs_show, 0 },
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};
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static int arcpgu_debugfs_init(struct drm_minor *minor)
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{
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return drm_debugfs_create_files(arcpgu_debugfs_list,
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ARRAY_SIZE(arcpgu_debugfs_list), minor->debugfs_root, minor);
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}
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#endif
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static struct drm_driver arcpgu_drm_driver = {
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static struct drm_driver arcpgu_drm_driver = {
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.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
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.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME |
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DRIVER_ATOMIC,
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DRIVER_ATOMIC,
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@ -185,6 +211,9 @@ static struct drm_driver arcpgu_drm_driver = {
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.gem_prime_vmap = drm_gem_cma_prime_vmap,
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.gem_prime_vmap = drm_gem_cma_prime_vmap,
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.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
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.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
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.gem_prime_mmap = drm_gem_cma_prime_mmap,
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.gem_prime_mmap = drm_gem_cma_prime_mmap,
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#ifdef CONFIG_DEBUG_FS
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.debugfs_init = arcpgu_debugfs_init,
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#endif
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};
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};
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static int arcpgu_probe(struct platform_device *pdev)
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static int arcpgu_probe(struct platform_device *pdev)
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