1 files changed, 232 insertions, 0 deletions
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 000000000000..77e45475f4c7
--- /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);
+}