From f22af945f79a2bd68941efdb57d52e8d81db4d45 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Sun, 1 Nov 2015 12:19:42 -0200 Subject: [PATCH] [media] v4l: vsp1: bru: Don't program background color in control set handler The datasheet clearly states that all but a few registers can't be modified when the device is running. Programming the background color in the control set handler is thus prohibited. Program it when starting the module instead. This requires storing the background color value internally as the module can be started from the frame completion interrupt handler, and accessing control values requires taking a mutex. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_bru.c | 15 +++++++++------ drivers/media/platform/vsp1/vsp1_bru.h | 2 ++ 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_bru.c b/drivers/media/platform/vsp1/vsp1_bru.c index cb0dbc15ddad..4c1bd0419e12 100644 --- a/drivers/media/platform/vsp1/vsp1_bru.c +++ b/drivers/media/platform/vsp1/vsp1_bru.c @@ -42,13 +42,9 @@ static int bru_s_ctrl(struct v4l2_ctrl *ctrl) struct vsp1_bru *bru = container_of(ctrl->handler, struct vsp1_bru, ctrls); - if (!vsp1_entity_is_streaming(&bru->entity)) - return 0; - switch (ctrl->id) { case V4L2_CID_BG_COLOR: - vsp1_bru_write(bru, VI6_BRU_VIRRPF_COL, ctrl->val | - (0xff << VI6_BRU_VIRRPF_COL_A_SHIFT)); + bru->bgcolor = ctrl->val; break; } @@ -95,12 +91,17 @@ static int bru_s_stream(struct v4l2_subdev *subdev, int enable) flags & V4L2_PIX_FMT_FLAG_PREMUL_ALPHA ? 0 : VI6_BRU_INCTRL_NRM); - /* Set the background position to cover the whole output image. */ + /* Set the background position to cover the whole output image and + * configure its color. + */ vsp1_bru_write(bru, VI6_BRU_VIRRPF_SIZE, (format->width << VI6_BRU_VIRRPF_SIZE_HSIZE_SHIFT) | (format->height << VI6_BRU_VIRRPF_SIZE_VSIZE_SHIFT)); vsp1_bru_write(bru, VI6_BRU_VIRRPF_LOC, 0); + vsp1_bru_write(bru, VI6_BRU_VIRRPF_COL, bru->bgcolor | + (0xff << VI6_BRU_VIRRPF_COL_A_SHIFT)); + /* Route BRU input 1 as SRC input to the ROP unit and configure the ROP * unit with a NOP operation to make BRU input 1 available as the * Blend/ROP unit B SRC input. @@ -438,6 +439,8 @@ struct vsp1_bru *vsp1_bru_create(struct vsp1_device *vsp1) v4l2_ctrl_new_std(&bru->ctrls, &bru_ctrl_ops, V4L2_CID_BG_COLOR, 0, 0xffffff, 1, 0); + bru->bgcolor = 0; + bru->entity.subdev.ctrl_handler = &bru->ctrls; if (bru->ctrls.error) { diff --git a/drivers/media/platform/vsp1/vsp1_bru.h b/drivers/media/platform/vsp1/vsp1_bru.h index dbac9686ea69..4e7d2e79b940 100644 --- a/drivers/media/platform/vsp1/vsp1_bru.h +++ b/drivers/media/platform/vsp1/vsp1_bru.h @@ -33,6 +33,8 @@ struct vsp1_bru { struct vsp1_rwpf *rpf; struct v4l2_rect compose; } inputs[VSP1_MAX_RPF]; + + u32 bgcolor; }; static inline struct vsp1_bru *to_bru(struct v4l2_subdev *subdev)