[Intel-gfx] [PATCH 1/7] drm/i915/skl: Print the DMC firmware status in debugfs

[Mika Kuoppala]

From: Damien Lespiau <damien.lespiau at intel.com>

Create a new debufs file for it, we'll have a few more things to add
there.

v2: Fix checkpatch warning about static const array

Signed-off-by: Damien Lespiau <damien.lespiau at intel.com> (v1)
Signed-off-by: Mika Kuoppala <mika.kuoppala at intel.com>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index a3b22bd..ceae425 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2777,6 +2777,27 @@ static int i915_power_domain_info(struct seq_file *m, void *unused)
 	return 0;
 }
 
+static int i915_dmc_info(struct seq_file *m, void *unused)
+{
+	struct drm_info_node *node = m->private;
+	struct drm_device *dev = node->minor->dev;
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	enum csr_state csr_state;
+	static const char * const csr_state_str[] = {
+		"unknown", "loaded", "error"
+	};
+
+	if (!HAS_CSR(dev)) {
+		seq_puts(m, "not supported\n");
+		return 0;
+	}
+
+	csr_state = intel_csr_load_status_get(dev_priv);
+	seq_printf(m, "status: %s\n", csr_state_str[csr_state]);
+
+	return 0;
+}
+
 static void intel_seq_print_mode(struct seq_file *m, int tabs,
 				 struct drm_display_mode *mode)
 {
@@ -5236,6 +5257,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
 	{"i915_energy_uJ", i915_energy_uJ, 0},
 	{"i915_runtime_pm_status", i915_runtime_pm_status, 0},
 	{"i915_power_domain_info", i915_power_domain_info, 0},
+	{"i915_dmc_info", i915_dmc_info, 0},
 	{"i915_display_info", i915_display_info, 0},
 	{"i915_semaphore_status", i915_semaphore_status, 0},
 	{"i915_shared_dplls_info", i915_shared_dplls_info, 0},
-- 
2.1.4