drm/sti: add debugfs entries for DVO connector (755ce376) · Commits · 戴 / test

drivers/gpu/drm/sti/sti_dvo.c

+70 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

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