On Thu, Dec 19, 2024 at 03:49:23PM +0800, Jun Nie wrote: > Add the case to reserve multiple pairs mixers for high resolution.
You are not adding anything. > Current code only supports one pair of mixer usage case. To support > quad-pipe usage case, two pairs of mixers are needed. > > Current code resets number of mixer on failure of pair's peer test and > retry on another pair. If two pairs are needed, the failure on the test > of 2nd pair results clearing to the 1st pair. This patch only clear the > bit for the 2nd pair allocation before retry on another pair. > > Signed-off-by: Jun Nie <jun....@linaro.org> > --- > drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > index cde3c5616f9bc..a8b01b78c02c7 100644 > --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c > @@ -316,7 +316,11 @@ static int _dpu_rm_reserve_lms(struct dpu_rm *rm, > if (!rm->mixer_blks[i]) > continue; > > - lm_count = 0; > + /* > + * Clear the last bit to drop the previous primary mixer if > + * fail to find its peer. if the driver failed > + */ > + lm_count &= 0xfe; > lm_idx[lm_count] = i; > > if (!_dpu_rm_check_lm_and_get_connected_blks(rm, global_state, > > -- > 2.34.1 > -- With best wishes Dmitry
