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path: root/drivers/gpu/drm/vc4/vc4_hdmi.h
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Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi.h')
-rw-r--r--drivers/gpu/drm/vc4/vc4_hdmi.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 33e9f665ab8e..36c0b082a43b 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -178,6 +178,43 @@ struct vc4_hdmi {
struct debugfs_regset32 hdmi_regset;
struct debugfs_regset32 hd_regset;
+
+ /**
+ * @hw_lock: Spinlock protecting device register access.
+ */
+ spinlock_t hw_lock;
+
+ /**
+ * @mutex: Mutex protecting the driver access across multiple
+ * frameworks (KMS, ALSA).
+ *
+ * NOTE: While supported, CEC has been left out since
+ * cec_s_phys_addr_from_edid() might call .adap_enable and lead to a
+ * reentrancy issue between .get_modes (or .detect) and .adap_enable.
+ * Since we don't share any state between the CEC hooks and KMS', it's
+ * not a big deal. The only trouble might come from updating the CEC
+ * clock divider which might be affected by a modeset, but CEC should
+ * be resilient to that.
+ */
+ struct mutex mutex;
+
+ /**
+ * @saved_adjusted_mode: Copy of @drm_crtc_state.adjusted_mode
+ * for use by ALSA hooks and interrupt handlers. Protected by @mutex.
+ */
+ struct drm_display_mode saved_adjusted_mode;
+
+ /**
+ * @output_enabled: Is the HDMI controller currently active?
+ * Protected by @mutex.
+ */
+ bool output_enabled;
+
+ /**
+ * @scdc_enabled: Is the HDMI controller currently running with
+ * the scrambler on? Protected by @mutex.
+ */
+ bool scdc_enabled;
};
static inline struct vc4_hdmi *