From 27764726a8fa72a7e8a7cdccbe9e4425747a96fa Mon Sep 17 00:00:00 2001 From: Mike Isely Date: Sat, 7 Mar 2009 01:57:25 -0300 Subject: V4L/DVB (11194): pvrusb2: Implement mechanism to force a full sub-device update When a pvrusb2 driver instance first initializes, we need to be sure to send out a complete state update for everything to all attached modules. The old i2c layer did this by keeping a separate mask of "stale" bits for each attached module - and setting that mask to all stale when that module attaches. But the new sub-device adaptation I've implemented here no longer has per-module stale bits. So instead there's now a global "force dirty" bit that is set upon instance initialization, before the sub-devices are attached. After the first update, this bit is cleared, allowing for normal update-on-dirty behavior. In this manner, we ensure that all sub-devices have been properly synchronized at initialization. Signed-off-by: Mike Isely Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/pvrusb2/pvrusb2-hdw.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) (limited to 'drivers/media/video/pvrusb2/pvrusb2-hdw.c') diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c index 89d5bb4f88b..1fb9ca560ac 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c @@ -2185,6 +2185,8 @@ static void pvr2_hdw_setup_low(struct pvr2_hdw *hdw) if (!pvr2_hdw_dev_ok(hdw)) return; + hdw->force_dirty = !0; + if (!hdw->hdw_desc->flag_no_powerup) { pvr2_hdw_cmd_powerup(hdw); if (!pvr2_hdw_dev_ok(hdw)) return; @@ -2935,7 +2937,7 @@ static void pvr2_subdev_set_control(struct pvr2_hdw *hdw, int id, } #define PVR2_SUBDEV_SET_CONTROL(hdw, id, lab) \ - if ((hdw)->lab##_dirty) { \ + if ((hdw)->lab##_dirty || (hdw)->force_dirty) { \ pvr2_subdev_set_control(hdw, id, #lab, (hdw)->lab##_val); \ } @@ -2949,7 +2951,7 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw) pvr2_trace(PVR2_TRACE_CHIPS, "subdev update..."); - if (hdw->tuner_updated) { + if (hdw->tuner_updated || hdw->force_dirty) { struct tuner_setup setup; pvr2_trace(PVR2_TRACE_CHIPS, "subdev tuner set_type(%d)", hdw->tuner_type); @@ -2962,7 +2964,7 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw) } } - if (hdw->input_dirty || hdw->std_dirty) { + if (hdw->input_dirty || hdw->std_dirty || hdw->force_dirty) { pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_standard"); if (hdw->input_val == PVR2_CVAL_INPUT_RADIO) { v4l2_device_call_all(&hdw->v4l2_dev, 0, @@ -2987,14 +2989,14 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw) PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_BASS, bass); PVR2_SUBDEV_SET_CONTROL(hdw, V4L2_CID_AUDIO_TREBLE, treble); - if (hdw->input_dirty || hdw->audiomode_dirty) { + if (hdw->input_dirty || hdw->audiomode_dirty || hdw->force_dirty) { struct v4l2_tuner vt; memset(&vt, 0, sizeof(vt)); vt.audmode = hdw->audiomode_val; v4l2_device_call_all(&hdw->v4l2_dev, 0, tuner, s_tuner, &vt); } - if (hdw->freqDirty) { + if (hdw->freqDirty || hdw->force_dirty) { unsigned long fv; struct v4l2_frequency freq; fv = pvr2_hdw_get_cur_freq(hdw); @@ -3019,7 +3021,7 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw) s_frequency, &freq); } - if (hdw->res_hor_dirty || hdw->res_ver_dirty) { + if (hdw->res_hor_dirty || hdw->res_ver_dirty || hdw->force_dirty) { struct v4l2_format fmt; memset(&fmt, 0, sizeof(fmt)); fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; @@ -3030,7 +3032,7 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw) v4l2_device_call_all(&hdw->v4l2_dev, 0, video, s_fmt, &fmt); } - if (hdw->srate_dirty) { + if (hdw->srate_dirty || hdw->force_dirty) { u32 val; pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_audio %d", hdw->srate_val); @@ -3061,7 +3063,7 @@ static void pvr2_subdev_update(struct pvr2_hdw *hdw) (*fp)(hdw, sd); } - if (hdw->tuner_signal_stale && hdw->cropcap_stale) { + if (hdw->tuner_signal_stale || hdw->cropcap_stale) { pvr2_hdw_status_poll(hdw); } } @@ -3075,7 +3077,7 @@ static int pvr2_hdw_commit_setup(struct pvr2_hdw *hdw) unsigned int idx; struct pvr2_ctrl *cptr; int value; - int commit_flag = 0; + int commit_flag = hdw->force_dirty; char buf[100]; unsigned int bcnt,ccnt; @@ -3260,6 +3262,7 @@ static int pvr2_hdw_commit_execute(struct pvr2_hdw *hdw) pvr2_subdev_update(hdw); hdw->tuner_updated = 0; + hdw->force_dirty = 0; for (idx = 0; idx < hdw->control_cnt; idx++) { cptr = hdw->controls + idx; if (!cptr->info->clear_dirty) continue; -- cgit v1.2.3