Jyri Sarha <jsarha@xxxxxx> wrote on Fri [2019-Dec-20 17:55:12 +0200]: > This patch adds a new DRM driver for Texas Instruments DSS IPs used on > Texas Instruments Keystone K2G, AM65x, and J721e SoCs. The new DSS IP is > a major change to the older DSS IP versions, which are supported by > the omapdrm driver. While on higher level the Keystone DSS resembles > the older DSS versions, the registers are completely different and the > internal pipelines differ a lot. > > DSS IP found on K2G is an "ultra-light" version, and has only a single > plane and a single output. The Keystone 3 DSS IPs are found on AM65x > and J721E SoCs. AM65x DSS has two video ports, one full video plane, > and another "lite" plane without scaling support. J721E has 4 video > ports, 2 video planes and 2 lite planes. AM65x DSS has also integrated > OLDI (LVDS) output. > > Version history: > > v2: - rebased on top of drm-next-2019-11-27 > - sort all include lines in all files > - remove all include <drm/drmP.h> > - remove select "select VIDEOMODE_HELPERS" > - call dispc_vp_setup() later in tidss_crtc_atomic_flush() (there is no > to call it in new modeset case as it is also called in vp_enable()) > - change probe sequence and drm_device allocation (follow example in > drm_drv.c) > - use __maybe_unused instead of #ifdef for pm functions > - remove "struct drm_fbdev_cma *fbdev;" from driver data > - check panel connector type before connecting it > > v3: no change > > v4: no change > > v5: - remove fifo underflow irq handling, it is not an error and > it should be used for debug purposes only > - memory tuning, prefetch plane fifo up to high-threshold value to > minimize possibility of underflows. > > Co-developed-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx> > Signed-off-by: Jyri Sarha <jsarha@xxxxxx> Reviewed-by: Benoit Parrot <bparrot@xxxxxx>
