From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/media/common/b2c2/flexcop-hw-filter.c | 232 ++++++++++++++++++++++++++ 1 file changed, 232 insertions(+) create mode 100644 drivers/media/common/b2c2/flexcop-hw-filter.c (limited to 'drivers/media/common/b2c2/flexcop-hw-filter.c') diff --git a/drivers/media/common/b2c2/flexcop-hw-filter.c b/drivers/media/common/b2c2/flexcop-hw-filter.c new file mode 100644 index 000000000..77e45475f --- /dev/null +++ b/drivers/media/common/b2c2/flexcop-hw-filter.c @@ -0,0 +1,232 @@ +/* + * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III + * flexcop-hw-filter.c - pid and mac address filtering and control functions + * see flexcop.c for copyright information + */ +#include "flexcop.h" + +static void flexcop_rcv_data_ctrl(struct flexcop_device *fc, int onoff) +{ + flexcop_set_ibi_value(ctrl_208, Rcv_Data_sig, onoff); + deb_ts("rcv_data is now: '%s'\n", onoff ? "on" : "off"); +} + +void flexcop_smc_ctrl(struct flexcop_device *fc, int onoff) +{ + flexcop_set_ibi_value(ctrl_208, SMC_Enable_sig, onoff); +} + +static void flexcop_null_filter_ctrl(struct flexcop_device *fc, int onoff) +{ + flexcop_set_ibi_value(ctrl_208, Null_filter_sig, onoff); +} + +void flexcop_set_mac_filter(struct flexcop_device *fc, u8 mac[6]) +{ + flexcop_ibi_value v418, v41c; + v41c = fc->read_ibi_reg(fc, mac_address_41c); + + v418.mac_address_418.MAC1 = mac[0]; + v418.mac_address_418.MAC2 = mac[1]; + v418.mac_address_418.MAC3 = mac[2]; + v418.mac_address_418.MAC6 = mac[3]; + v41c.mac_address_41c.MAC7 = mac[4]; + v41c.mac_address_41c.MAC8 = mac[5]; + + fc->write_ibi_reg(fc, mac_address_418, v418); + fc->write_ibi_reg(fc, mac_address_41c, v41c); +} + +void flexcop_mac_filter_ctrl(struct flexcop_device *fc, int onoff) +{ + flexcop_set_ibi_value(ctrl_208, MAC_filter_Mode_sig, onoff); +} + +static void flexcop_pid_group_filter(struct flexcop_device *fc, + u16 pid, u16 mask) +{ + /* index_reg_310.extra_index_reg need to 0 or 7 to work */ + flexcop_ibi_value v30c; + v30c.pid_filter_30c_ext_ind_0_7.Group_PID = pid; + v30c.pid_filter_30c_ext_ind_0_7.Group_mask = mask; + fc->write_ibi_reg(fc, pid_filter_30c, v30c); +} + +static void flexcop_pid_group_filter_ctrl(struct flexcop_device *fc, int onoff) +{ + flexcop_set_ibi_value(ctrl_208, Mask_filter_sig, onoff); +} + +/* this fancy define reduces the code size of the quite similar PID controlling of + * the first 6 PIDs + */ + +#define pid_ctrl(vregname,field,enablefield,trans_field,transval) \ + flexcop_ibi_value vpid = fc->read_ibi_reg(fc, vregname), \ +v208 = fc->read_ibi_reg(fc, ctrl_208); \ +vpid.vregname.field = onoff ? pid : 0x1fff; \ +vpid.vregname.trans_field = transval; \ +v208.ctrl_208.enablefield = onoff; \ +fc->write_ibi_reg(fc, vregname, vpid); \ +fc->write_ibi_reg(fc, ctrl_208, v208); + +static void flexcop_pid_Stream1_PID_ctrl(struct flexcop_device *fc, + u16 pid, int onoff) +{ + pid_ctrl(pid_filter_300, Stream1_PID, Stream1_filter_sig, + Stream1_trans, 0); +} + +static void flexcop_pid_Stream2_PID_ctrl(struct flexcop_device *fc, + u16 pid, int onoff) +{ + pid_ctrl(pid_filter_300, Stream2_PID, Stream2_filter_sig, + Stream2_trans, 0); +} + +static void flexcop_pid_PCR_PID_ctrl(struct flexcop_device *fc, + u16 pid, int onoff) +{ + pid_ctrl(pid_filter_304, PCR_PID, PCR_filter_sig, PCR_trans, 0); +} + +static void flexcop_pid_PMT_PID_ctrl(struct flexcop_device *fc, + u16 pid, int onoff) +{ + pid_ctrl(pid_filter_304, PMT_PID, PMT_filter_sig, PMT_trans, 0); +} + +static void flexcop_pid_EMM_PID_ctrl(struct flexcop_device *fc, + u16 pid, int onoff) +{ + pid_ctrl(pid_filter_308, EMM_PID, EMM_filter_sig, EMM_trans, 0); +} + +static void flexcop_pid_ECM_PID_ctrl(struct flexcop_device *fc, + u16 pid, int onoff) +{ + pid_ctrl(pid_filter_308, ECM_PID, ECM_filter_sig, ECM_trans, 0); +} + +static void flexcop_pid_control(struct flexcop_device *fc, + int index, u16 pid, int onoff) +{ + if (pid == 0x2000) + return; + + deb_ts("setting pid: %5d %04x at index %d '%s'\n", + pid, pid, index, onoff ? "on" : "off"); + + /* We could use bit magic here to reduce source code size. + * I decided against it, but to use the real register names */ + switch (index) { + case 0: + flexcop_pid_Stream1_PID_ctrl(fc, pid, onoff); + break; + case 1: + flexcop_pid_Stream2_PID_ctrl(fc, pid, onoff); + break; + case 2: + flexcop_pid_PCR_PID_ctrl(fc, pid, onoff); + break; + case 3: + flexcop_pid_PMT_PID_ctrl(fc, pid, onoff); + break; + case 4: + flexcop_pid_EMM_PID_ctrl(fc, pid, onoff); + break; + case 5: + flexcop_pid_ECM_PID_ctrl(fc, pid, onoff); + break; + default: + if (fc->has_32_hw_pid_filter && index < 38) { + flexcop_ibi_value vpid, vid; + + /* set the index */ + vid = fc->read_ibi_reg(fc, index_reg_310); + vid.index_reg_310.index_reg = index - 6; + fc->write_ibi_reg(fc, index_reg_310, vid); + + vpid = fc->read_ibi_reg(fc, pid_n_reg_314); + vpid.pid_n_reg_314.PID = onoff ? pid : 0x1fff; + vpid.pid_n_reg_314.PID_enable_bit = onoff; + fc->write_ibi_reg(fc, pid_n_reg_314, vpid); + } + break; + } +} + +static int flexcop_toggle_fullts_streaming(struct flexcop_device *fc, int onoff) +{ + if (fc->fullts_streaming_state != onoff) { + deb_ts("%s full TS transfer\n",onoff ? "enabling" : "disabling"); + flexcop_pid_group_filter(fc, 0, 0x1fe0 * (!onoff)); + flexcop_pid_group_filter_ctrl(fc, onoff); + fc->fullts_streaming_state = onoff; + } + return 0; +} + +int flexcop_pid_feed_control(struct flexcop_device *fc, + struct dvb_demux_feed *dvbdmxfeed, int onoff) +{ + int max_pid_filter = 6 + fc->has_32_hw_pid_filter*32; + + fc->feedcount += onoff ? 1 : -1; /* the number of PIDs/Feed currently requested */ + if (dvbdmxfeed->index >= max_pid_filter) + fc->extra_feedcount += onoff ? 1 : -1; + + /* toggle complete-TS-streaming when: + * - pid_filtering is not enabled and it is the first or last feed requested + * - pid_filtering is enabled, + * - but the number of requested feeds is exceeded + * - or the requested pid is 0x2000 */ + + if (!fc->pid_filtering && fc->feedcount == onoff) + flexcop_toggle_fullts_streaming(fc, onoff); + + if (fc->pid_filtering) { + flexcop_pid_control \ + (fc, dvbdmxfeed->index, dvbdmxfeed->pid, onoff); + + if (fc->extra_feedcount > 0) + flexcop_toggle_fullts_streaming(fc, 1); + else if (dvbdmxfeed->pid == 0x2000) + flexcop_toggle_fullts_streaming(fc, onoff); + else + flexcop_toggle_fullts_streaming(fc, 0); + } + + /* if it was the first or last feed request change the stream-status */ + if (fc->feedcount == onoff) { + flexcop_rcv_data_ctrl(fc, onoff); + if (fc->stream_control) /* device specific stream control */ + fc->stream_control(fc, onoff); + + /* feeding stopped -> reset the flexcop filter*/ + if (onoff == 0) { + flexcop_reset_block_300(fc); + flexcop_hw_filter_init(fc); + } + } + return 0; +} +EXPORT_SYMBOL(flexcop_pid_feed_control); + +void flexcop_hw_filter_init(struct flexcop_device *fc) +{ + int i; + flexcop_ibi_value v; + for (i = 0; i < 6 + 32*fc->has_32_hw_pid_filter; i++) + flexcop_pid_control(fc, i, 0x1fff, 0); + + flexcop_pid_group_filter(fc, 0, 0x1fe0); + flexcop_pid_group_filter_ctrl(fc, 0); + + v = fc->read_ibi_reg(fc, pid_filter_308); + v.pid_filter_308.EMM_filter_4 = 1; + v.pid_filter_308.EMM_filter_6 = 0; + fc->write_ibi_reg(fc, pid_filter_308, v); + + flexcop_null_filter_ctrl(fc, 1); +} -- cgit v1.2.3-54-g00ecf