diff options
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi.h')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.h | 37 |
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 * |