From 7578c204620c8e25ec6e4849cd12098f831a14d0 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 21 May 2014 19:00:05 -0300 Subject: [PATCH] [media] v4l: vsp1: Add V4L2_CID_ALPHA_COMPONENT control support The control is used to configure the fixed alpha channel value, when reading from memory in the RPF or writing to memory in the WPF. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_rpf.c | 52 ++++++++++++++++++++++-- drivers/media/platform/vsp1/vsp1_rwpf.h | 2 + drivers/media/platform/vsp1/vsp1_wpf.c | 54 +++++++++++++++++++++++++ 3 files changed, 104 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c index 2824f5354f55..576779f2332b 100644 --- a/drivers/media/platform/vsp1/vsp1_rpf.c +++ b/drivers/media/platform/vsp1/vsp1_rpf.c @@ -38,6 +38,32 @@ static inline void vsp1_rpf_write(struct vsp1_rwpf *rpf, u32 reg, u32 data) reg + rpf->entity.index * VI6_RPF_OFFSET, data); } +/* ----------------------------------------------------------------------------- + * Controls + */ + +static int rpf_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct vsp1_rwpf *rpf = + container_of(ctrl->handler, struct vsp1_rwpf, ctrls); + + if (!vsp1_entity_is_streaming(&rpf->entity)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_ALPHA_COMPONENT: + vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET, + ctrl->val << VI6_RPF_VRTCOL_SET_LAYA_SHIFT); + break; + } + + return 0; +} + +static const struct v4l2_ctrl_ops rpf_ctrl_ops = { + .s_ctrl = rpf_s_ctrl, +}; + /* ----------------------------------------------------------------------------- * V4L2 Subdevice Core Operations */ @@ -50,6 +76,11 @@ static int rpf_s_stream(struct v4l2_subdev *subdev, int enable) const struct v4l2_rect *crop = &rpf->crop; u32 pstride; u32 infmt; + int ret; + + ret = vsp1_entity_set_streaming(&rpf->entity, enable); + if (ret < 0) + return ret; if (!enable) return 0; @@ -101,14 +132,13 @@ static int rpf_s_stream(struct v4l2_subdev *subdev, int enable) (rpf->location.left << VI6_RPF_LOC_HCOORD_SHIFT) | (rpf->location.top << VI6_RPF_LOC_VCOORD_SHIFT)); - /* Use the alpha channel (extended to 8 bits) when available or a - * hardcoded 255 value otherwise. Disable color keying. + /* Use the alpha channel (extended to 8 bits) when available or an + * alpha value set through the V4L2_CID_ALPHA_COMPONENT control + * otherwise. Disable color keying. */ vsp1_rpf_write(rpf, VI6_RPF_ALPH_SEL, VI6_RPF_ALPH_SEL_AEXT_EXT | (fmtinfo->alpha ? VI6_RPF_ALPH_SEL_ASEL_PACKED : VI6_RPF_ALPH_SEL_ASEL_FIXED)); - vsp1_rpf_write(rpf, VI6_RPF_VRTCOL_SET, - 255 << VI6_RPF_VRTCOL_SET_LAYA_SHIFT); vsp1_rpf_write(rpf, VI6_RPF_MSK_CTRL, 0); vsp1_rpf_write(rpf, VI6_RPF_CKEY_CTRL, 0); @@ -198,6 +228,20 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index) vsp1_entity_init_formats(subdev, NULL); + /* Initialize the control handler. */ + v4l2_ctrl_handler_init(&rpf->ctrls, 1); + v4l2_ctrl_new_std(&rpf->ctrls, &rpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, + 0, 255, 1, 255); + + rpf->entity.subdev.ctrl_handler = &rpf->ctrls; + + if (rpf->ctrls.error) { + dev_err(vsp1->dev, "rpf%u: failed to initialize controls\n", + index); + ret = rpf->ctrls.error; + goto error; + } + /* Initialize the video device. */ video = &rpf->video; diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h index b4fb65e58770..28dd9e7b3838 100644 --- a/drivers/media/platform/vsp1/vsp1_rwpf.h +++ b/drivers/media/platform/vsp1/vsp1_rwpf.h @@ -14,6 +14,7 @@ #define __VSP1_RWPF_H__ #include +#include #include #include "vsp1.h" @@ -26,6 +27,7 @@ struct vsp1_rwpf { struct vsp1_entity entity; struct vsp1_video video; + struct v4l2_ctrl_handler ctrls; unsigned int max_width; unsigned int max_height; diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c index a2ba10721f1b..6e057762c933 100644 --- a/drivers/media/platform/vsp1/vsp1_wpf.c +++ b/drivers/media/platform/vsp1/vsp1_wpf.c @@ -38,6 +38,35 @@ static inline void vsp1_wpf_write(struct vsp1_rwpf *wpf, u32 reg, u32 data) reg + wpf->entity.index * VI6_WPF_OFFSET, data); } +/* ----------------------------------------------------------------------------- + * Controls + */ + +static int wpf_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct vsp1_rwpf *wpf = + container_of(ctrl->handler, struct vsp1_rwpf, ctrls); + u32 value; + + if (!vsp1_entity_is_streaming(&wpf->entity)) + return 0; + + switch (ctrl->id) { + case V4L2_CID_ALPHA_COMPONENT: + value = vsp1_wpf_read(wpf, VI6_WPF_OUTFMT); + value &= ~VI6_WPF_OUTFMT_PDV_MASK; + value |= ctrl->val << VI6_WPF_OUTFMT_PDV_SHIFT; + vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, value); + break; + } + + return 0; +} + +static const struct v4l2_ctrl_ops wpf_ctrl_ops = { + .s_ctrl = wpf_s_ctrl, +}; + /* ----------------------------------------------------------------------------- * V4L2 Subdevice Core Operations */ @@ -51,6 +80,11 @@ static int wpf_s_stream(struct v4l2_subdev *subdev, int enable) unsigned int i; u32 srcrpf = 0; u32 outfmt = 0; + int ret; + + ret = vsp1_entity_set_streaming(&wpf->entity, enable); + if (ret < 0) + return ret; if (!enable) { vsp1_write(vsp1, VI6_WPF_IRQ_ENB(wpf->entity.index), 0); @@ -113,7 +147,13 @@ static int wpf_s_stream(struct v4l2_subdev *subdev, int enable) wpf->entity.formats[RWPF_PAD_SOURCE].code) outfmt |= VI6_WPF_OUTFMT_CSC; + /* Take the control handler lock to ensure that the PDV value won't be + * changed behind our back by a set control operation. + */ + mutex_lock(wpf->ctrls.lock); + outfmt |= vsp1_wpf_read(wpf, VI6_WPF_OUTFMT) & VI6_WPF_OUTFMT_PDV_MASK; vsp1_wpf_write(wpf, VI6_WPF_OUTFMT, outfmt); + mutex_unlock(wpf->ctrls.lock); vsp1_write(vsp1, VI6_DPR_WPF_FPORCH(wpf->entity.index), VI6_DPR_WPF_FPORCH_FP_WPFN); @@ -209,6 +249,20 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index) vsp1_entity_init_formats(subdev, NULL); + /* Initialize the control handler. */ + v4l2_ctrl_handler_init(&wpf->ctrls, 1); + v4l2_ctrl_new_std(&wpf->ctrls, &wpf_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, + 0, 255, 1, 255); + + wpf->entity.subdev.ctrl_handler = &wpf->ctrls; + + if (wpf->ctrls.error) { + dev_err(vsp1->dev, "wpf%u: failed to initialize controls\n", + index); + ret = wpf->ctrls.error; + goto error; + } + /* Initialize the video device. */ video = &wpf->video; -- 2.34.1