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drm/sti: add debugfs entries for HDA connector 

Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
This commit is contained in:
Vincent Abriou 2016-02-04 16:32:06 +01:00
parent 755ce376a4
commit 6c84578c2c
1 changed files with 104 additions and 1 deletions
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105
drivers/gpu/drm/sti/sti_hda.c
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@ -326,6 +326,103 @@ static void hda_enable_hd_dacs(struct sti_hda *hda, bool enable)
}
}
#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
readl(hda->regs + reg))
static void hda_dbg_cfg(struct seq_file *s, int val)
{
seq_puts(s, "\tAWG ");
seq_puts(s, val & CFG_AWG_ASYNC_EN ? "enabled" : "disabled");
}
static void hda_dbg_awg_microcode(struct seq_file *s, void __iomem *reg)
{
unsigned int i;
seq_puts(s, "\n\n");
seq_puts(s, " HDA 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 void hda_dbg_video_dacs_ctrl(struct seq_file *s, void __iomem *reg)
{
u32 val = readl(reg);
u32 mask;
switch ((u32)reg & VIDEO_DACS_CONTROL_MASK) {
case VIDEO_DACS_CONTROL_SYSCFG2535:
mask = DAC_CFG_HD_OFF_MASK;
break;
case VIDEO_DACS_CONTROL_SYSCFG5072:
mask = DAC_CFG_HD_HZUVW_OFF_MASK;
break;
default:
DRM_DEBUG_DRIVER("Warning: DACS ctrl register not supported!");
return;
}
seq_puts(s, "\n");
seq_printf(s, "\n %-25s 0x%08X", "VIDEO_DACS_CONTROL", val);
seq_puts(s, "\tHD DACs ");
seq_puts(s, val & mask ? "disabled" : "enabled");
}
static int hda_dbg_show(struct seq_file *s, void *data)
{
struct drm_info_node *node = s->private;
struct sti_hda *hda = (struct sti_hda *)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, "HD Analog: (vaddr = 0x%p)", hda->regs);
DBGFS_DUMP(HDA_ANA_CFG);
hda_dbg_cfg(s, readl(hda->regs + HDA_ANA_CFG));
DBGFS_DUMP(HDA_ANA_SCALE_CTRL_Y);
DBGFS_DUMP(HDA_ANA_SCALE_CTRL_CB);
DBGFS_DUMP(HDA_ANA_SCALE_CTRL_CR);
DBGFS_DUMP(HDA_ANA_ANC_CTRL);
DBGFS_DUMP(HDA_ANA_SRC_Y_CFG);
DBGFS_DUMP(HDA_ANA_SRC_C_CFG);
hda_dbg_awg_microcode(s, hda->regs + HDA_SYNC_AWGI);
if (hda->video_dacs_ctrl)
hda_dbg_video_dacs_ctrl(s, hda->video_dacs_ctrl);
seq_puts(s, "\n");
mutex_unlock(&dev->struct_mutex);
return 0;
}
static struct drm_info_list hda_debugfs_files[] = {
{ "hda", hda_dbg_show, 0, NULL },
};
static void hda_debugfs_exit(struct sti_hda *hda, struct drm_minor *minor)
{
drm_debugfs_remove_files(hda_debugfs_files,
ARRAY_SIZE(hda_debugfs_files),
minor);
}
static int hda_debugfs_init(struct sti_hda *hda, struct drm_minor *minor)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(hda_debugfs_files); i++)
hda_debugfs_files[i].data = hda;
return drm_debugfs_create_files(hda_debugfs_files,
ARRAY_SIZE(hda_debugfs_files),
minor->debugfs_root, minor);
}
/**
* Configure AWG, writing instructions
*
@ -688,6 +785,9 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data)
/* force to disable hd dacs at startup */
hda_enable_hd_dacs(hda, false);
if (hda_debugfs_init(hda, drm_dev->primary))
DRM_ERROR("HDA debugfs setup failed\n");
return 0;
err_sysfs:
@ -700,7 +800,10 @@ err_connector:
static void sti_hda_unbind(struct device *dev,
struct device *master, void *data)
{
/* do nothing */
struct sti_hda *hda = dev_get_drvdata(dev);
struct drm_device *drm_dev = data;
hda_debugfs_exit(hda, drm_dev->primary);
}
static const struct component_ops sti_hda_ops = {