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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>
This commit is contained in:
Vincent Abriou 2016-02-04 16:27:54 +01:00
parent 7ea6e6e4f9
commit 755ce376a4
1 changed files with 70 additions and 0 deletions
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70
drivers/gpu/drm/sti/sti_dvo.c
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@ -6,6 +6,7 @@
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/component.h> #include <linux/component.h>
#include <linux/debugfs.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/of_gpio.h> #include <linux/of_gpio.h>
#include <linux/platform_device.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); 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) static void sti_dvo_disable(struct drm_bridge *bridge)
{ {
struct sti_dvo *dvo = bridge->driver_private; 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; goto err_sysfs;
} }
if (dvo_debugfs_init(dvo, drm_dev->primary))
DRM_ERROR("DVO debugfs setup failed\n");
return 0; return 0;
err_sysfs: err_sysfs:
@ -469,6 +536,9 @@ static void sti_dvo_unbind(struct device *dev,
struct device *master, void *data) struct device *master, void *data)
{ {
struct sti_dvo *dvo = dev_get_drvdata(dev); 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); drm_bridge_remove(dvo->bridge);
} }