ee2d64f5cc
A major rewrite of interrupt handling for incoming mailbox processing, to split the timing critical steps from the the deferrable steps as the sending XPU on the CX23418 will time out and overwrite our incoming mailboxes rather quickly. Setup a pool of work "order forms" for the irq handler to send jobs to the new work handler routine which uses the kernel default work queue to do the deferrable work. Started optimizing some of the cx18-io calls as they are now the low hanging fruit for recoving microseconds back from the timeline. Future optimizations will get rid of mmio read retries, mmio stats logging, and combine smaller functions in the irq path into the larger ones to save ~2 us each. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
306 lines
7.8 KiB
C
306 lines
7.8 KiB
C
/*
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* cx18 functions for DVB support
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*
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* Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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*
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "cx18-version.h"
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#include "cx18-dvb.h"
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#include "cx18-io.h"
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#include "cx18-streams.h"
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#include "cx18-cards.h"
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#include "s5h1409.h"
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#include "mxl5005s.h"
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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#define CX18_REG_DMUX_NUM_PORT_0_CONTROL 0xd5a000
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static struct mxl5005s_config hauppauge_hvr1600_tuner = {
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.i2c_address = 0xC6 >> 1,
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.if_freq = IF_FREQ_5380000HZ,
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.xtal_freq = CRYSTAL_FREQ_16000000HZ,
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.agc_mode = MXL_SINGLE_AGC,
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.tracking_filter = MXL_TF_C_H,
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.rssi_enable = MXL_RSSI_ENABLE,
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.cap_select = MXL_CAP_SEL_ENABLE,
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.div_out = MXL_DIV_OUT_4,
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.clock_out = MXL_CLOCK_OUT_DISABLE,
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.output_load = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
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.top = MXL5005S_TOP_25P2,
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.mod_mode = MXL_DIGITAL_MODE,
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.if_mode = MXL_ZERO_IF,
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.AgcMasterByte = 0x00,
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};
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static struct s5h1409_config hauppauge_hvr1600_config = {
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.demod_address = 0x32 >> 1,
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.output_mode = S5H1409_SERIAL_OUTPUT,
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.gpio = S5H1409_GPIO_ON,
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.qam_if = 44000,
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.inversion = S5H1409_INVERSION_OFF,
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.status_mode = S5H1409_DEMODLOCKING,
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.mpeg_timing = S5H1409_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK
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};
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static int dvb_register(struct cx18_stream *stream);
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/* Kernel DVB framework calls this when the feed needs to start.
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* The CX18 framework should enable the transport DMA handling
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* and queue processing.
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*/
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static int cx18_dvb_start_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct cx18_stream *stream = (struct cx18_stream *) demux->priv;
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struct cx18 *cx = stream->cx;
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int ret;
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u32 v;
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CX18_DEBUG_INFO("Start feed: pid = 0x%x index = %d\n",
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feed->pid, feed->index);
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mutex_lock(&cx->serialize_lock);
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ret = cx18_init_on_first_open(cx);
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mutex_unlock(&cx->serialize_lock);
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if (ret) {
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CX18_ERR("Failed to initialize firmware starting DVB feed\n");
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return ret;
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}
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ret = -EINVAL;
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switch (cx->card->type) {
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case CX18_CARD_HVR_1600_ESMT:
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case CX18_CARD_HVR_1600_SAMSUNG:
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v = cx18_read_reg(cx, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
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v |= 0x00400000; /* Serial Mode */
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v |= 0x00002000; /* Data Length - Byte */
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v |= 0x00010000; /* Error - Polarity */
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v |= 0x00020000; /* Error - Passthru */
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v |= 0x000c0000; /* Error - Ignore */
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cx18_write_reg(cx, v, CX18_REG_DMUX_NUM_PORT_0_CONTROL);
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break;
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default:
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/* Assumption - Parallel transport - Signalling
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* undefined or default.
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*/
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break;
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}
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if (!demux->dmx.frontend)
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return -EINVAL;
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if (!stream)
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return -EINVAL;
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mutex_lock(&stream->dvb.feedlock);
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if (stream->dvb.feeding++ == 0) {
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CX18_DEBUG_INFO("Starting Transport DMA\n");
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set_bit(CX18_F_S_STREAMING, &stream->s_flags);
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ret = cx18_start_v4l2_encode_stream(stream);
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if (ret < 0) {
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CX18_DEBUG_INFO("Failed to start Transport DMA\n");
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stream->dvb.feeding--;
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if (stream->dvb.feeding == 0)
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clear_bit(CX18_F_S_STREAMING, &stream->s_flags);
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}
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} else
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ret = 0;
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mutex_unlock(&stream->dvb.feedlock);
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return ret;
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}
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/* Kernel DVB framework calls this when the feed needs to stop. */
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static int cx18_dvb_stop_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct cx18_stream *stream = (struct cx18_stream *)demux->priv;
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struct cx18 *cx = stream->cx;
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int ret = -EINVAL;
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CX18_DEBUG_INFO("Stop feed: pid = 0x%x index = %d\n",
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feed->pid, feed->index);
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if (stream) {
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mutex_lock(&stream->dvb.feedlock);
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if (--stream->dvb.feeding == 0) {
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CX18_DEBUG_INFO("Stopping Transport DMA\n");
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ret = cx18_stop_v4l2_encode_stream(stream, 0);
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} else
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ret = 0;
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mutex_unlock(&stream->dvb.feedlock);
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}
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return ret;
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}
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int cx18_dvb_register(struct cx18_stream *stream)
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{
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struct cx18 *cx = stream->cx;
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struct cx18_dvb *dvb = &stream->dvb;
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struct dvb_adapter *dvb_adapter;
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struct dvb_demux *dvbdemux;
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struct dmx_demux *dmx;
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int ret;
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if (!dvb)
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return -EINVAL;
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ret = dvb_register_adapter(&dvb->dvb_adapter,
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CX18_DRIVER_NAME,
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THIS_MODULE, &cx->dev->dev, adapter_nr);
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if (ret < 0)
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goto err_out;
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dvb_adapter = &dvb->dvb_adapter;
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dvbdemux = &dvb->demux;
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dvbdemux->priv = (void *)stream;
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dvbdemux->filternum = 256;
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dvbdemux->feednum = 256;
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dvbdemux->start_feed = cx18_dvb_start_feed;
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dvbdemux->stop_feed = cx18_dvb_stop_feed;
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dvbdemux->dmx.capabilities = (DMX_TS_FILTERING |
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DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
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ret = dvb_dmx_init(dvbdemux);
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if (ret < 0)
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goto err_dvb_unregister_adapter;
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dmx = &dvbdemux->dmx;
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dvb->hw_frontend.source = DMX_FRONTEND_0;
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dvb->mem_frontend.source = DMX_MEMORY_FE;
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dvb->dmxdev.filternum = 256;
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dvb->dmxdev.demux = dmx;
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ret = dvb_dmxdev_init(&dvb->dmxdev, dvb_adapter);
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if (ret < 0)
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goto err_dvb_dmx_release;
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ret = dmx->add_frontend(dmx, &dvb->hw_frontend);
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if (ret < 0)
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goto err_dvb_dmxdev_release;
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ret = dmx->add_frontend(dmx, &dvb->mem_frontend);
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if (ret < 0)
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goto err_remove_hw_frontend;
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ret = dmx->connect_frontend(dmx, &dvb->hw_frontend);
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if (ret < 0)
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goto err_remove_mem_frontend;
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ret = dvb_register(stream);
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if (ret < 0)
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goto err_disconnect_frontend;
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dvb_net_init(dvb_adapter, &dvb->dvbnet, dmx);
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CX18_INFO("DVB Frontend registered\n");
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mutex_init(&dvb->feedlock);
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dvb->enabled = 1;
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return ret;
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err_disconnect_frontend:
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dmx->disconnect_frontend(dmx);
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err_remove_mem_frontend:
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dmx->remove_frontend(dmx, &dvb->mem_frontend);
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err_remove_hw_frontend:
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dmx->remove_frontend(dmx, &dvb->hw_frontend);
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err_dvb_dmxdev_release:
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dvb_dmxdev_release(&dvb->dmxdev);
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err_dvb_dmx_release:
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dvb_dmx_release(dvbdemux);
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err_dvb_unregister_adapter:
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dvb_unregister_adapter(dvb_adapter);
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err_out:
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return ret;
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}
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void cx18_dvb_unregister(struct cx18_stream *stream)
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{
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struct cx18 *cx = stream->cx;
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struct cx18_dvb *dvb = &stream->dvb;
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struct dvb_adapter *dvb_adapter;
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struct dvb_demux *dvbdemux;
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struct dmx_demux *dmx;
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CX18_INFO("unregister DVB\n");
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dvb_adapter = &dvb->dvb_adapter;
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dvbdemux = &dvb->demux;
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dmx = &dvbdemux->dmx;
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dmx->close(dmx);
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dvb_net_release(&dvb->dvbnet);
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dmx->remove_frontend(dmx, &dvb->mem_frontend);
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dmx->remove_frontend(dmx, &dvb->hw_frontend);
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dvb_dmxdev_release(&dvb->dmxdev);
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dvb_dmx_release(dvbdemux);
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dvb_unregister_frontend(dvb->fe);
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dvb_frontend_detach(dvb->fe);
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dvb_unregister_adapter(dvb_adapter);
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}
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/* All the DVB attach calls go here, this function get's modified
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* for each new card. No other function in this file needs
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* to change.
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*/
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static int dvb_register(struct cx18_stream *stream)
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{
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struct cx18_dvb *dvb = &stream->dvb;
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struct cx18 *cx = stream->cx;
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int ret = 0;
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switch (cx->card->type) {
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case CX18_CARD_HVR_1600_ESMT:
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case CX18_CARD_HVR_1600_SAMSUNG:
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dvb->fe = dvb_attach(s5h1409_attach,
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&hauppauge_hvr1600_config,
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&cx->i2c_adap[0]);
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if (dvb->fe != NULL) {
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dvb_attach(mxl5005s_attach, dvb->fe,
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&cx->i2c_adap[0],
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&hauppauge_hvr1600_tuner);
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ret = 0;
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}
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break;
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default:
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/* No Digital Tv Support */
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break;
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}
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if (dvb->fe == NULL) {
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CX18_ERR("frontend initialization failed\n");
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return -1;
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}
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ret = dvb_register_frontend(&dvb->dvb_adapter, dvb->fe);
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if (ret < 0) {
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if (dvb->fe->ops.release)
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dvb->fe->ops.release(dvb->fe);
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return ret;
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}
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return ret;
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}
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