// SPDX-License-Identifier: GPL-2.0
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/*
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* Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
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* flexcop-hw-filter.c - pid and mac address filtering and control functions
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* see flexcop.c for copyright information
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*/
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#include "flexcop.h"
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static void flexcop_rcv_data_ctrl(struct flexcop_device *fc, int onoff)
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{
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flexcop_set_ibi_value(ctrl_208, Rcv_Data_sig, onoff);
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deb_ts("rcv_data is now: '%s'\n", onoff ? "on" : "off");
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}
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void flexcop_smc_ctrl(struct flexcop_device *fc, int onoff)
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{
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flexcop_set_ibi_value(ctrl_208, SMC_Enable_sig, onoff);
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}
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static void flexcop_null_filter_ctrl(struct flexcop_device *fc, int onoff)
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{
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flexcop_set_ibi_value(ctrl_208, Null_filter_sig, onoff);
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}
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void flexcop_set_mac_filter(struct flexcop_device *fc, u8 mac[6])
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{
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flexcop_ibi_value v418, v41c;
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v41c = fc->read_ibi_reg(fc, mac_address_41c);
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v418.mac_address_418.MAC1 = mac[0];
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v418.mac_address_418.MAC2 = mac[1];
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v418.mac_address_418.MAC3 = mac[2];
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v418.mac_address_418.MAC6 = mac[3];
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v41c.mac_address_41c.MAC7 = mac[4];
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v41c.mac_address_41c.MAC8 = mac[5];
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fc->write_ibi_reg(fc, mac_address_418, v418);
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fc->write_ibi_reg(fc, mac_address_41c, v41c);
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}
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void flexcop_mac_filter_ctrl(struct flexcop_device *fc, int onoff)
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{
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flexcop_set_ibi_value(ctrl_208, MAC_filter_Mode_sig, onoff);
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}
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static void flexcop_pid_group_filter(struct flexcop_device *fc,
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u16 pid, u16 mask)
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{
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/* index_reg_310.extra_index_reg need to 0 or 7 to work */
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flexcop_ibi_value v30c;
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v30c.pid_filter_30c_ext_ind_0_7.Group_PID = pid;
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v30c.pid_filter_30c_ext_ind_0_7.Group_mask = mask;
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fc->write_ibi_reg(fc, pid_filter_30c, v30c);
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}
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static void flexcop_pid_group_filter_ctrl(struct flexcop_device *fc, int onoff)
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{
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flexcop_set_ibi_value(ctrl_208, Mask_filter_sig, onoff);
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}
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/* this fancy define reduces the code size of the quite similar PID controlling of
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* the first 6 PIDs
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*/
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#define pid_ctrl(vregname,field,enablefield,trans_field,transval) \
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flexcop_ibi_value vpid = fc->read_ibi_reg(fc, vregname), \
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v208 = fc->read_ibi_reg(fc, ctrl_208); \
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vpid.vregname.field = onoff ? pid : 0x1fff; \
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vpid.vregname.trans_field = transval; \
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v208.ctrl_208.enablefield = onoff; \
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fc->write_ibi_reg(fc, vregname, vpid); \
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fc->write_ibi_reg(fc, ctrl_208, v208);
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static void flexcop_pid_Stream1_PID_ctrl(struct flexcop_device *fc,
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u16 pid, int onoff)
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{
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pid_ctrl(pid_filter_300, Stream1_PID, Stream1_filter_sig,
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Stream1_trans, 0);
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}
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static void flexcop_pid_Stream2_PID_ctrl(struct flexcop_device *fc,
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u16 pid, int onoff)
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{
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pid_ctrl(pid_filter_300, Stream2_PID, Stream2_filter_sig,
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Stream2_trans, 0);
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}
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static void flexcop_pid_PCR_PID_ctrl(struct flexcop_device *fc,
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u16 pid, int onoff)
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{
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pid_ctrl(pid_filter_304, PCR_PID, PCR_filter_sig, PCR_trans, 0);
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}
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static void flexcop_pid_PMT_PID_ctrl(struct flexcop_device *fc,
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u16 pid, int onoff)
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{
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pid_ctrl(pid_filter_304, PMT_PID, PMT_filter_sig, PMT_trans, 0);
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}
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static void flexcop_pid_EMM_PID_ctrl(struct flexcop_device *fc,
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u16 pid, int onoff)
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{
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pid_ctrl(pid_filter_308, EMM_PID, EMM_filter_sig, EMM_trans, 0);
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}
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static void flexcop_pid_ECM_PID_ctrl(struct flexcop_device *fc,
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u16 pid, int onoff)
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{
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pid_ctrl(pid_filter_308, ECM_PID, ECM_filter_sig, ECM_trans, 0);
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}
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static void flexcop_pid_control(struct flexcop_device *fc,
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int index, u16 pid, int onoff)
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{
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if (pid == 0x2000)
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return;
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deb_ts("setting pid: %5d %04x at index %d '%s'\n",
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pid, pid, index, onoff ? "on" : "off");
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/* First 6 can be buggy - skip over them if option set */
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if (fc->skip_6_hw_pid_filter)
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index += 6;
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/* We could use bit magic here to reduce source code size.
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* I decided against it, but to use the real register names */
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switch (index) {
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case 0:
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flexcop_pid_Stream1_PID_ctrl(fc, pid, onoff);
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break;
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case 1:
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flexcop_pid_Stream2_PID_ctrl(fc, pid, onoff);
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break;
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case 2:
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flexcop_pid_PCR_PID_ctrl(fc, pid, onoff);
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break;
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case 3:
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flexcop_pid_PMT_PID_ctrl(fc, pid, onoff);
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break;
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case 4:
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flexcop_pid_EMM_PID_ctrl(fc, pid, onoff);
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break;
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case 5:
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flexcop_pid_ECM_PID_ctrl(fc, pid, onoff);
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break;
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default:
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if (fc->has_32_hw_pid_filter && index < 38) {
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flexcop_ibi_value vpid, vid;
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/* set the index */
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vid = fc->read_ibi_reg(fc, index_reg_310);
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vid.index_reg_310.index_reg = index - 6;
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fc->write_ibi_reg(fc, index_reg_310, vid);
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vpid = fc->read_ibi_reg(fc, pid_n_reg_314);
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vpid.pid_n_reg_314.PID = onoff ? pid : 0x1fff;
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vpid.pid_n_reg_314.PID_enable_bit = onoff;
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fc->write_ibi_reg(fc, pid_n_reg_314, vpid);
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}
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break;
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}
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}
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static int flexcop_toggle_fullts_streaming(struct flexcop_device *fc, int onoff)
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{
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if (fc->fullts_streaming_state != onoff) {
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deb_ts("%s full TS transfer\n",onoff ? "enabling" : "disabling");
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flexcop_pid_group_filter(fc, 0, 0x1fe0 * (!onoff));
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flexcop_pid_group_filter_ctrl(fc, onoff);
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fc->fullts_streaming_state = onoff;
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}
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return 0;
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}
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int flexcop_pid_feed_control(struct flexcop_device *fc,
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struct dvb_demux_feed *dvbdmxfeed, int onoff)
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{
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int max_pid_filter = 6;
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max_pid_filter -= 6 * fc->skip_6_hw_pid_filter;
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max_pid_filter += 32 * fc->has_32_hw_pid_filter;
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fc->feedcount += onoff ? 1 : -1; /* the number of PIDs/Feed currently requested */
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if (dvbdmxfeed->index >= max_pid_filter)
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fc->extra_feedcount += onoff ? 1 : -1;
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/* toggle complete-TS-streaming when:
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* - pid_filtering is not enabled and it is the first or last feed requested
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* - pid_filtering is enabled,
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* - but the number of requested feeds is exceeded
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* - or the requested pid is 0x2000 */
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if (!fc->pid_filtering && fc->feedcount == onoff)
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flexcop_toggle_fullts_streaming(fc, onoff);
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if (fc->pid_filtering) {
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flexcop_pid_control \
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(fc, dvbdmxfeed->index, dvbdmxfeed->pid, onoff);
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if (fc->extra_feedcount > 0)
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flexcop_toggle_fullts_streaming(fc, 1);
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else if (dvbdmxfeed->pid == 0x2000)
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flexcop_toggle_fullts_streaming(fc, onoff);
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else
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flexcop_toggle_fullts_streaming(fc, 0);
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}
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/* if it was the first or last feed request change the stream-status */
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if (fc->feedcount == onoff) {
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flexcop_rcv_data_ctrl(fc, onoff);
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if (fc->stream_control) /* device specific stream control */
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fc->stream_control(fc, onoff);
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/* feeding stopped -> reset the flexcop filter*/
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if (onoff == 0) {
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flexcop_reset_block_300(fc);
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flexcop_hw_filter_init(fc);
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}
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}
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return 0;
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}
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EXPORT_SYMBOL(flexcop_pid_feed_control);
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void flexcop_hw_filter_init(struct flexcop_device *fc)
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{
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int i;
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flexcop_ibi_value v;
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int max_pid_filter = 6;
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max_pid_filter -= 6 * fc->skip_6_hw_pid_filter;
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max_pid_filter += 32 * fc->has_32_hw_pid_filter;
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for (i = 0; i < max_pid_filter; i++)
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flexcop_pid_control(fc, i, 0x1fff, 0);
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flexcop_pid_group_filter(fc, 0, 0x1fe0);
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flexcop_pid_group_filter_ctrl(fc, 0);
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v = fc->read_ibi_reg(fc, pid_filter_308);
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v.pid_filter_308.EMM_filter_4 = 1;
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v.pid_filter_308.EMM_filter_6 = 0;
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fc->write_ibi_reg(fc, pid_filter_308, v);
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flexcop_null_filter_ctrl(fc, 1);
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}
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