[PATCH 3/7] drm/i915/skl: Print the DMC firmware status in debugfs

Mika Kuoppala
2015-10-27T12:47:08Z

From: Damien Lespiau <damien.lespiau@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
v3: use named initializers (Ville)
v4: strip out csr_state as it will be removed in future (Ville, Imre)

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com> (v1)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 89ba549..2f53cb1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2783,6 +2783,32 @@ 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;
+ struct intel_csr *csr;
+
+ if (!HAS_CSR(dev)) {
+ seq_puts(m, "not supported\n");
+ return 0;
+ }
+
+ csr = &dev_priv->csr;
+
+ seq_printf(m, "fw loaded: %s\n", yesno(csr->dmc_payload != NULL));
+ seq_printf(m, "path: %s\n", csr->fw_path);
+
+ if (!csr->dmc_payload)
+ return 0;
+
+ seq_printf(m, "version: %d.%d\n", CSR_VERSION_MAJOR(csr->version),
+ CSR_VERSION_MINOR(csr->version));
+
+ return 0;
+}
+
static void intel_seq_print_mode(struct seq_file *m, int tabs,
struct drm_display_mode *mode)
{
@@ -5242,6 +5268,7 @@ 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},