[Intel-gfx] [PATCH 04/17] drm/i915: Add debugfs information for Displayport compliance testing

[Todd Previte]

This patch was part of "[PATCH 05/10] drm/i915: Add debugfs interface for
Displayport debug and compliance testing". That patch has been split into
smaller patches for ease of review and integration.

This patch contains the definitions/declarations for some of the constants
and data structures added to support debugfs output for Displayport compliance
testing.

Signed-off-by: Todd Previte <tprevite at gmail.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 41 +++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 479e0c1..65b4f5e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -33,6 +33,7 @@
 #include <linux/slab.h>
 #include <linux/export.h>
 #include <linux/list_sort.h>
+#include <linux/string.h>
 #include <asm/msr-index.h>
 #include <drm/drmP.h>
 #include "intel_drv.h"
@@ -51,6 +52,46 @@ static const char *yesno(int v)
 	return v ? "yes" : "no";
 }
 
+#define DP_PARAMETER_COUNT		8
+#define MAX_DP_CONFIG_LINE_COUNT	64
+
+enum dp_config_param {
+	DP_CONFIG_PARAM_INVALID = -1,
+	DP_CONFIG_PARAM_CONNECTOR = 0,
+	DP_CONFIG_PARAM_LINK_RATE,
+	DP_CONFIG_PARAM_LANE_COUNT,
+	DP_CONFIG_PARAM_VOLTAGE_SWING,
+	DP_CONFIG_PARAM_PREEMPHASIS,
+	DP_CONFIG_PARAM_HRES,
+	DP_CONFIG_PARAM_VRES,
+	DP_CONFIG_PARAM_BPP
+};
+
+struct dp_config {
+	enum dp_config_param type;
+	unsigned long value;
+};
+
+const char *dp_conf_tokens[DP_PARAMETER_COUNT] = {
+		 "Connector",
+		 "Link Rate",
+		 "Lane Count",
+		 "Voltage Swing Level",
+		 "Preemphasis Level",
+		 "Horizontal Resolution",
+		 "Vertical Resolution",
+		 "Bits Per Pixel"
+};
+/* Strings for writing out dp_configs */
+#define DP_CONF_STR_CONNECTOR	"Connector:             %s\n"
+#define DP_CONF_STR_LINKRATE	"Link Rate:             %02x\n"
+#define DP_CONF_STR_LANES	"Lane Count:            %u\n"
+#define DP_CONF_STR_VSWING	"Voltage Swing Level:   %u\n"
+#define DP_CONF_STR_PREEMP	"Preemphasis Level:     %u\n"
+#define DP_CONF_STR_HRES	"Horizontal Resolution: %d\n"
+#define DP_CONF_STR_VRES	"Vertical Resolution:   %d\n"
+#define DP_CONF_STR_BPP		"Bits Per Pixel:        %u\n"
+
 /* As the drm_debugfs_init() routines are called before dev->dev_private is
  * allocated we need to hook into the minor for release. */
 static int
-- 
1.9.1