Jyri Sarha 11abbc9f39 drm/tilcdc: Set framebuffer DMA address to HW only if CRTC is enabled ... Touching HW while clocks are off is a serious error and for instance breaks suspend functionality. After this patch tilcdc_crtc_update_fb() always updates the primary plane's framebuffer pointer, increases fb's reference count and stores vblank event. tilcdc_crtc_update_fb() only writes the fb's DMA address to HW if the crtc is enabled, as tilcdc_crtc_enable() takes care of writing the address on enable. This patch also refactors the tilcdc_crtc_update_fb() a bit. Number of subsequent small changes had made it almost unreadable. There should be no other functional changes but checking the CRTC's enable state. However, the locking goes a bit differently and some of the redundant checks have been removed in this new version. The enable_lock should be enough to protect the access to tilcdc_crtc->enabled. The irq_lock protects the access to last_vblank and next_fb. The check for vrefresh and last_vblank being valid is redundant, as the vrefresh should be always valid if the CRTC is enabled and now last_vblank should be too, because it is initialized to current time when CRTC raster is enabled. If for some reason the values are not correctly initialized the division by zero warning is quite appropriate. Signed-off-by: Jyri Sarha <jsarha@ti.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>		2017-03-14 14:28:58 +02:00
..
Kconfig
Makefile
tilcdc_crtc.c	drm/tilcdc: Set framebuffer DMA address to HW only if CRTC is enabled	2017-03-14 14:28:58 +02:00
tilcdc_drv.c	drm: Rely on mode_config data for fb_helper initialization	2017-02-02 19:12:00 +01:00
tilcdc_drv.h	drm/tilcdc: Remove tilcdc_debugfs_cleanup()	2017-01-27 15:27:45 +01:00
tilcdc_external.c
tilcdc_external.h
tilcdc_panel.c
tilcdc_panel.h
tilcdc_plane.c
tilcdc_regs.h
tilcdc_slave_compat.c
tilcdc_slave_compat.dts
tilcdc_slave_compat.h
tilcdc_tfp410.c
tilcdc_tfp410.h