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authorVincent Abriou <vincent.abriou@st.com>2016-02-04 16:27:54 +0100
committerVincent Abriou <vincent.abriou@st.com>2016-02-26 10:06:21 +0100
commit755ce376a4df18bd057c1a65a9c8ef665c7467be (patch)
treebd5609702ea3e70cc47550811c2f5747e1bc293c /drivers/gpu/drm/sti/sti_dvo.c
parent7ea6e6e4f96aa590702c3f6e02434ef2bb6d957d (diff)
downloadlinux-stericsson-755ce376a4df18bd057c1a65a9c8ef665c7467be.tar.gz
drm/sti: add debugfs entries for DVO connector
Signed-off-by: Vincent Abriou <vincent.abriou@st.com> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/sti/sti_dvo.c')
-rw-r--r--drivers/gpu/drm/sti/sti_dvo.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c
index 9e90b746e9b2..25f76632002c 100644
--- a/drivers/gpu/drm/sti/sti_dvo.c
+++ b/drivers/gpu/drm/sti/sti_dvo.c
@@ -6,6 +6,7 @@
#include <linux/clk.h>
#include <linux/component.h>
+#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/of_gpio.h>
#include <linux/platform_device.h>
@@ -156,6 +157,69 @@ static void dvo_awg_configure(struct sti_dvo *dvo, u32 *awg_ram_code, int nb)
writel(DVO_AWG_CTRL_EN, dvo->regs + DVO_AWG_DIGSYNC_CTRL);
}
+#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
+ readl(dvo->regs + reg))
+
+static void dvo_dbg_awg_microcode(struct seq_file *s, void __iomem *reg)
+{
+ unsigned int i;
+
+ seq_puts(s, "\n\n");
+ seq_puts(s, " DVO AWG microcode:");
+ for (i = 0; i < AWG_MAX_INST; i++) {
+ if (i % 8 == 0)
+ seq_printf(s, "\n %04X:", i);
+ seq_printf(s, " %04X", readl(reg + i * 4));
+ }
+}
+
+static int dvo_dbg_show(struct seq_file *s, void *data)
+{
+ struct drm_info_node *node = s->private;
+ struct sti_dvo *dvo = (struct sti_dvo *)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, "DVO: (vaddr = 0x%p)", dvo->regs);
+ DBGFS_DUMP(DVO_AWG_DIGSYNC_CTRL);
+ DBGFS_DUMP(DVO_DOF_CFG);
+ DBGFS_DUMP(DVO_LUT_PROG_LOW);
+ DBGFS_DUMP(DVO_LUT_PROG_MID);
+ DBGFS_DUMP(DVO_LUT_PROG_HIGH);
+ dvo_dbg_awg_microcode(s, dvo->regs + DVO_DIGSYNC_INSTR_I);
+ seq_puts(s, "\n");
+
+ mutex_unlock(&dev->struct_mutex);
+ return 0;
+}
+
+static struct drm_info_list dvo_debugfs_files[] = {
+ { "dvo", dvo_dbg_show, 0, NULL },
+};
+
+static void dvo_debugfs_exit(struct sti_dvo *dvo, struct drm_minor *minor)
+{
+ drm_debugfs_remove_files(dvo_debugfs_files,
+ ARRAY_SIZE(dvo_debugfs_files),
+ minor);
+}
+
+static int dvo_debugfs_init(struct sti_dvo *dvo, struct drm_minor *minor)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(dvo_debugfs_files); i++)
+ dvo_debugfs_files[i].data = dvo;
+
+ return drm_debugfs_create_files(dvo_debugfs_files,
+ ARRAY_SIZE(dvo_debugfs_files),
+ minor->debugfs_root, minor);
+}
+
static void sti_dvo_disable(struct drm_bridge *bridge)
{
struct sti_dvo *dvo = bridge->driver_private;
@@ -455,6 +519,9 @@ static int sti_dvo_bind(struct device *dev, struct device *master, void *data)
goto err_sysfs;
}
+ if (dvo_debugfs_init(dvo, drm_dev->primary))
+ DRM_ERROR("DVO debugfs setup failed\n");
+
return 0;
err_sysfs:
@@ -469,6 +536,9 @@ static void sti_dvo_unbind(struct device *dev,
struct device *master, void *data)
{
struct sti_dvo *dvo = dev_get_drvdata(dev);
+ struct drm_device *drm_dev = data;
+
+ dvo_debugfs_exit(dvo, drm_dev->primary);
drm_bridge_remove(dvo->bridge);
}