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drm/sti: add debugfs entries for TVOUT encoders
Signed-off-by: Vincent Abriou <vincent.abriou@st.com> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
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‎drivers/gpu/drm/sti/sti_tvout.c

Lines changed: 157 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -462,6 +462,157 @@ static void tvout_hda_start(struct sti_tvout *tvout, bool main_path)
462462
tvout_write(tvout, 0, TVO_HD_DAC_CFG_OFF);
463463
}
464464

465+
#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
466+
readl(tvout->regs + reg))
467+
468+
static void tvout_dbg_vip(struct seq_file *s, int val)
469+
{
470+
int r, g, b, tmp, mask;
471+
char *const reorder[] = {"Y_G", "Cb_B", "Cr_R"};
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char *const clipping[] = {"No", "EAV/SAV", "Limited range RGB/Y",
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"Limited range Cb/Cr", "decided by register"};
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char *const round[] = {"8-bit", "10-bit", "12-bit"};
475+
char *const input_sel[] = {"Main (color matrix enabled)",
476+
"Main (color matrix by-passed)",
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"", "", "", "", "", "",
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"Aux (color matrix enabled)",
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"Aux (color matrix by-passed)",
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"", "", "", "", "", "Force value"};
481+
482+
seq_puts(s, "\t");
483+
mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_R_SHIFT;
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r = (val & mask) >> TVO_VIP_REORDER_R_SHIFT;
485+
mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_G_SHIFT;
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g = (val & mask) >> TVO_VIP_REORDER_G_SHIFT;
487+
mask = TVO_VIP_REORDER_MASK << TVO_VIP_REORDER_B_SHIFT;
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b = (val & mask) >> TVO_VIP_REORDER_B_SHIFT;
489+
seq_printf(s, "%-24s %s->%s %s->%s %s->%s\n", "Reorder:",
490+
reorder[r], reorder[TVO_VIP_REORDER_CR_R_SEL],
491+
reorder[g], reorder[TVO_VIP_REORDER_Y_G_SEL],
492+
reorder[b], reorder[TVO_VIP_REORDER_CB_B_SEL]);
493+
seq_puts(s, "\t\t\t\t\t");
494+
mask = TVO_VIP_CLIP_MASK << TVO_VIP_CLIP_SHIFT;
495+
tmp = (val & mask) >> TVO_VIP_CLIP_SHIFT;
496+
seq_printf(s, "%-24s %s\n", "Clipping:", clipping[tmp]);
497+
seq_puts(s, "\t\t\t\t\t");
498+
mask = TVO_VIP_RND_MASK << TVO_VIP_RND_SHIFT;
499+
tmp = (val & mask) >> TVO_VIP_RND_SHIFT;
500+
seq_printf(s, "%-24s input data rounded to %s per component\n",
501+
"Round:", round[tmp]);
502+
seq_puts(s, "\t\t\t\t\t");
503+
tmp = (val & TVO_VIP_SEL_INPUT_MASK);
504+
seq_printf(s, "%-24s %s", "Input selection:", input_sel[tmp]);
505+
}
506+
507+
static void tvout_dbg_hd_dac_cfg(struct seq_file *s, int val)
508+
{
509+
seq_printf(s, "\t%-24s %s", "HD DAC:",
510+
val & 1 ? "disabled" : "enabled");
511+
}
512+
513+
static int tvout_dbg_show(struct seq_file *s, void *data)
514+
{
515+
struct drm_info_node *node = s->private;
516+
struct sti_tvout *tvout = (struct sti_tvout *)node->info_ent->data;
517+
struct drm_device *dev = node->minor->dev;
518+
struct drm_crtc *crtc;
519+
int ret;
520+
521+
ret = mutex_lock_interruptible(&dev->struct_mutex);
522+
if (ret)
523+
return ret;
524+
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seq_printf(s, "TVOUT: (vaddr = 0x%p)", tvout->regs);
526+
527+
seq_puts(s, "\n\n HDMI encoder: ");
528+
crtc = tvout->hdmi->crtc;
529+
if (crtc) {
530+
seq_printf(s, "connected to %s path",
531+
sti_crtc_is_main(crtc) ? "main" : "aux");
532+
DBGFS_DUMP(TVO_HDMI_SYNC_SEL);
533+
DBGFS_DUMP(TVO_VIP_HDMI);
534+
tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDMI));
535+
} else {
536+
seq_puts(s, "disabled");
537+
}
538+
539+
seq_puts(s, "\n\n DVO encoder: ");
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crtc = tvout->dvo->crtc;
541+
if (crtc) {
542+
seq_printf(s, "connected to %s path",
543+
sti_crtc_is_main(crtc) ? "main" : "aux");
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DBGFS_DUMP(TVO_DVO_SYNC_SEL);
545+
DBGFS_DUMP(TVO_DVO_CONFIG);
546+
DBGFS_DUMP(TVO_VIP_DVO);
547+
tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_DVO));
548+
} else {
549+
seq_puts(s, "disabled");
550+
}
551+
552+
seq_puts(s, "\n\n HDA encoder: ");
553+
crtc = tvout->hda->crtc;
554+
if (crtc) {
555+
seq_printf(s, "connected to %s path",
556+
sti_crtc_is_main(crtc) ? "main" : "aux");
557+
DBGFS_DUMP(TVO_HD_SYNC_SEL);
558+
DBGFS_DUMP(TVO_HD_DAC_CFG_OFF);
559+
tvout_dbg_hd_dac_cfg(s,
560+
readl(tvout->regs + TVO_HD_DAC_CFG_OFF));
561+
DBGFS_DUMP(TVO_VIP_HDF);
562+
tvout_dbg_vip(s, readl(tvout->regs + TVO_VIP_HDF));
563+
} else {
564+
seq_puts(s, "disabled");
565+
}
566+
567+
seq_puts(s, "\n\n main path configuration");
568+
DBGFS_DUMP(TVO_CSC_MAIN_M0);
569+
DBGFS_DUMP(TVO_CSC_MAIN_M1);
570+
DBGFS_DUMP(TVO_CSC_MAIN_M2);
571+
DBGFS_DUMP(TVO_CSC_MAIN_M3);
572+
DBGFS_DUMP(TVO_CSC_MAIN_M4);
573+
DBGFS_DUMP(TVO_CSC_MAIN_M5);
574+
DBGFS_DUMP(TVO_CSC_MAIN_M6);
575+
DBGFS_DUMP(TVO_CSC_MAIN_M7);
576+
DBGFS_DUMP(TVO_MAIN_IN_VID_FORMAT);
577+
578+
seq_puts(s, "\n\n auxiliary path configuration");
579+
DBGFS_DUMP(TVO_CSC_AUX_M0);
580+
DBGFS_DUMP(TVO_CSC_AUX_M2);
581+
DBGFS_DUMP(TVO_CSC_AUX_M3);
582+
DBGFS_DUMP(TVO_CSC_AUX_M4);
583+
DBGFS_DUMP(TVO_CSC_AUX_M5);
584+
DBGFS_DUMP(TVO_CSC_AUX_M6);
585+
DBGFS_DUMP(TVO_CSC_AUX_M7);
586+
DBGFS_DUMP(TVO_AUX_IN_VID_FORMAT);
587+
seq_puts(s, "\n");
588+
589+
mutex_unlock(&dev->struct_mutex);
590+
return 0;
591+
}
592+
593+
static struct drm_info_list tvout_debugfs_files[] = {
594+
{ "tvout", tvout_dbg_show, 0, NULL },
595+
};
596+
597+
static void tvout_debugfs_exit(struct sti_tvout *tvout, struct drm_minor *minor)
598+
{
599+
drm_debugfs_remove_files(tvout_debugfs_files,
600+
ARRAY_SIZE(tvout_debugfs_files),
601+
minor);
602+
}
603+
604+
static int tvout_debugfs_init(struct sti_tvout *tvout, struct drm_minor *minor)
605+
{
606+
unsigned int i;
607+
608+
for (i = 0; i < ARRAY_SIZE(tvout_debugfs_files); i++)
609+
tvout_debugfs_files[i].data = tvout;
610+
611+
return drm_debugfs_create_files(tvout_debugfs_files,
612+
ARRAY_SIZE(tvout_debugfs_files),
613+
minor->debugfs_root, minor);
614+
}
615+
465616
static void sti_tvout_encoder_dpms(struct drm_encoder *encoder, int mode)
466617
{
467618
}
@@ -668,15 +819,21 @@ static int sti_tvout_bind(struct device *dev, struct device *master, void *data)
668819

669820
sti_tvout_create_encoders(drm_dev, tvout);
670821

822+
if (tvout_debugfs_init(tvout, drm_dev->primary))
823+
DRM_ERROR("TVOUT debugfs setup failed\n");
824+
671825
return 0;
672826
}
673827

674828
static void sti_tvout_unbind(struct device *dev, struct device *master,
675829
void *data)
676830
{
677831
struct sti_tvout *tvout = dev_get_drvdata(dev);
832+
struct drm_device *drm_dev = data;
678833

679834
sti_tvout_destroy_encoders(tvout);
835+
836+
tvout_debugfs_exit(tvout, drm_dev->primary);
680837
}
681838

682839
static const struct component_ops sti_tvout_ops = {

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