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Commit 6c84578c authored by Vincent Abriou's avatar Vincent Abriou
Browse files

drm/sti: add debugfs entries for HDA connector 



Signed-off-by: default avatarVincent Abriou <vincent.abriou@st.com>
Reviewed-by: default avatarBenjamin Gaignard <benjamin.gaignard@linaro.org>
parent 755ce376

drivers/gpu/drm/sti/sti_hda.c

+104 −1
Original line number Diff line number Diff line
@@ -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 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data) 
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 = {