drm/sti: add debugfs entries for VID plane
Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
diff --git a/drivers/gpu/drm/sti/sti_vid.c b/drivers/gpu/drm/sti/sti_vid.c
index 0a1e50c..5a2c5dc 100644
--- a/drivers/gpu/drm/sti/sti_vid.c
+++ b/drivers/gpu/drm/sti/sti_vid.c
@@ -54,6 +54,93 @@
#define VID_MIN_HD_HEIGHT 720
+#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
+ readl(vid->regs + reg))
+
+static void vid_dbg_ctl(struct seq_file *s, int val)
+{
+ val = val >> 30;
+ seq_puts(s, "\t");
+
+ if (!(val & 1))
+ seq_puts(s, "NOT ");
+ seq_puts(s, "ignored on main mixer - ");
+
+ if (!(val & 2))
+ seq_puts(s, "NOT ");
+ seq_puts(s, "ignored on aux mixer");
+}
+
+static void vid_dbg_vpo(struct seq_file *s, int val)
+{
+ seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF);
+}
+
+static void vid_dbg_vps(struct seq_file *s, int val)
+{
+ seq_printf(s, "\txds:%4d\tyds:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF);
+}
+
+static void vid_dbg_mst(struct seq_file *s, int val)
+{
+ if (val & 1)
+ seq_puts(s, "\tBUFFER UNDERFLOW!");
+}
+
+static int vid_dbg_show(struct seq_file *s, void *arg)
+{
+ struct drm_info_node *node = s->private;
+ struct sti_vid *vid = (struct sti_vid *)node->info_ent->data;
+ struct drm_device *dev = node->minor->dev;
+ int ret;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ seq_printf(s, "VID: (vaddr= 0x%p)", vid->regs);
+
+ DBGFS_DUMP(VID_CTL);
+ vid_dbg_ctl(s, readl(vid->regs + VID_CTL));
+ DBGFS_DUMP(VID_ALP);
+ DBGFS_DUMP(VID_CLF);
+ DBGFS_DUMP(VID_VPO);
+ vid_dbg_vpo(s, readl(vid->regs + VID_VPO));
+ DBGFS_DUMP(VID_VPS);
+ vid_dbg_vps(s, readl(vid->regs + VID_VPS));
+ DBGFS_DUMP(VID_KEY1);
+ DBGFS_DUMP(VID_KEY2);
+ DBGFS_DUMP(VID_MPR0);
+ DBGFS_DUMP(VID_MPR1);
+ DBGFS_DUMP(VID_MPR2);
+ DBGFS_DUMP(VID_MPR3);
+ DBGFS_DUMP(VID_MST);
+ vid_dbg_mst(s, readl(vid->regs + VID_MST));
+ DBGFS_DUMP(VID_BC);
+ DBGFS_DUMP(VID_TINT);
+ DBGFS_DUMP(VID_CSAT);
+ seq_puts(s, "\n");
+
+ mutex_unlock(&dev->struct_mutex);
+ return 0;
+}
+
+static struct drm_info_list vid_debugfs_files[] = {
+ { "vid", vid_dbg_show, 0, NULL },
+};
+
+static int vid_debugfs_init(struct sti_vid *vid, struct drm_minor *minor)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(vid_debugfs_files); i++)
+ vid_debugfs_files[i].data = vid;
+
+ return drm_debugfs_create_files(vid_debugfs_files,
+ ARRAY_SIZE(vid_debugfs_files),
+ minor->debugfs_root, minor);
+}
+
void sti_vid_commit(struct sti_vid *vid,
struct drm_plane_state *state)
{
@@ -122,8 +209,8 @@
writel(VID_CSAT_DFLT, vid->regs + VID_CSAT);
}
-struct sti_vid *sti_vid_create(struct device *dev, int id,
- void __iomem *baseaddr)
+struct sti_vid *sti_vid_create(struct device *dev, struct drm_device *drm_dev,
+ int id, void __iomem *baseaddr)
{
struct sti_vid *vid;
@@ -139,5 +226,8 @@
sti_vid_init(vid);
+ if (vid_debugfs_init(vid, drm_dev->primary))
+ DRM_ERROR("VID debugfs setup failed\n");
+
return vid;
}