Merge master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6] / drivers / media / dvb / b2c2 / flexcop-hw-filter.c
1 /*
2  * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
3  *
4  * flexcop-hw-filter.c - pid and mac address filtering and corresponding control functions.
5  *
6  * see flexcop.c for copyright information.
7  */
8 #include "flexcop.h"
9
10 static void flexcop_rcv_data_ctrl(struct flexcop_device *fc, int onoff)
11 {
12         flexcop_set_ibi_value(ctrl_208,Rcv_Data_sig,onoff);
13
14         deb_ts("rcv_data is now: '%s'\n",onoff ? "on" : "off");
15 }
16
17 void flexcop_smc_ctrl(struct flexcop_device *fc, int onoff)
18 {
19         flexcop_set_ibi_value(ctrl_208,SMC_Enable_sig,onoff);
20 }
21
22 void flexcop_null_filter_ctrl(struct flexcop_device *fc, int onoff)
23 {
24         flexcop_set_ibi_value(ctrl_208,Null_filter_sig,onoff);
25 }
26
27 void flexcop_set_mac_filter(struct flexcop_device *fc, u8 mac[6])
28 {
29         flexcop_ibi_value v418,v41c;
30         v41c = fc->read_ibi_reg(fc,mac_address_41c);
31
32         v418.mac_address_418.MAC1 = mac[0];
33         v418.mac_address_418.MAC2 = mac[1];
34         v418.mac_address_418.MAC3 = mac[2];
35         v418.mac_address_418.MAC6 = mac[3];
36         v41c.mac_address_41c.MAC7 = mac[4];
37         v41c.mac_address_41c.MAC8 = mac[5];
38
39         fc->write_ibi_reg(fc,mac_address_418,v418);
40         fc->write_ibi_reg(fc,mac_address_41c,v41c);
41 }
42
43 void flexcop_mac_filter_ctrl(struct flexcop_device *fc, int onoff)
44 {
45         flexcop_set_ibi_value(ctrl_208,MAC_filter_Mode_sig,onoff);
46 }
47
48 static void flexcop_pid_group_filter(struct flexcop_device *fc, u16 pid, u16 mask)
49 {
50         /* index_reg_310.extra_index_reg need to 0 or 7 to work */
51         flexcop_ibi_value v30c;
52         v30c.pid_filter_30c_ext_ind_0_7.Group_PID = pid;
53         v30c.pid_filter_30c_ext_ind_0_7.Group_mask = mask;
54         fc->write_ibi_reg(fc,pid_filter_30c,v30c);
55 }
56
57 static void flexcop_pid_group_filter_ctrl(struct flexcop_device *fc, int onoff)
58 {
59         flexcop_set_ibi_value(ctrl_208,Mask_filter_sig,onoff);
60 }
61
62 /* this fancy define reduces the code size of the quite similar PID controlling of
63  * the first 6 PIDs
64  */
65
66 #define pid_ctrl(vregname,field,enablefield,trans_field,transval) \
67         flexcop_ibi_value vpid = fc->read_ibi_reg(fc, vregname), \
68                                           v208 = fc->read_ibi_reg(fc, ctrl_208); \
69 \
70         vpid.vregname.field = onoff ? pid : 0x1fff; \
71         vpid.vregname.trans_field = transval; \
72         v208.ctrl_208.enablefield = onoff; \
73 \
74         fc->write_ibi_reg(fc,vregname,vpid); \
75         fc->write_ibi_reg(fc,ctrl_208,v208);
76
77 static void flexcop_pid_Stream1_PID_ctrl(struct flexcop_device *fc, u16 pid, int onoff)
78 {
79         pid_ctrl(pid_filter_300,Stream1_PID,Stream1_filter_sig,Stream1_trans,0);
80 }
81
82 static void flexcop_pid_Stream2_PID_ctrl(struct flexcop_device *fc, u16 pid, int onoff)
83 {
84         pid_ctrl(pid_filter_300,Stream2_PID,Stream2_filter_sig,Stream2_trans,0);
85 }
86
87 static void flexcop_pid_PCR_PID_ctrl(struct flexcop_device *fc, u16 pid, int onoff)
88 {
89         pid_ctrl(pid_filter_304,PCR_PID,PCR_filter_sig,PCR_trans,0);
90 }
91
92 static void flexcop_pid_PMT_PID_ctrl(struct flexcop_device *fc, u16 pid, int onoff)
93 {
94         pid_ctrl(pid_filter_304,PMT_PID,PMT_filter_sig,PMT_trans,0);
95 }
96
97 static void flexcop_pid_EMM_PID_ctrl(struct flexcop_device *fc, u16 pid, int onoff)
98 {
99         pid_ctrl(pid_filter_308,EMM_PID,EMM_filter_sig,EMM_trans,0);
100 }
101
102 static void flexcop_pid_ECM_PID_ctrl(struct flexcop_device *fc, u16 pid, int onoff)
103 {
104         pid_ctrl(pid_filter_308,ECM_PID,ECM_filter_sig,ECM_trans,0);
105 }
106
107 static void flexcop_pid_control(struct flexcop_device *fc, int index, u16 pid,int onoff)
108 {
109         if (pid == 0x2000)
110                 return;
111
112         deb_ts("setting pid: %5d %04x at index %d '%s'\n",pid,pid,index,onoff ? "on" : "off");
113
114         /* We could use bit magic here to reduce source code size.
115          * I decided against it, but to use the real register names */
116         switch (index) {
117                 case 0: flexcop_pid_Stream1_PID_ctrl(fc,pid,onoff); break;
118                 case 1: flexcop_pid_Stream2_PID_ctrl(fc,pid,onoff); break;
119                 case 2: flexcop_pid_PCR_PID_ctrl(fc,pid,onoff); break;
120                 case 3: flexcop_pid_PMT_PID_ctrl(fc,pid,onoff); break;
121                 case 4: flexcop_pid_EMM_PID_ctrl(fc,pid,onoff); break;
122                 case 5: flexcop_pid_ECM_PID_ctrl(fc,pid,onoff); break;
123                 default:
124                         if (fc->has_32_hw_pid_filter && index < 38) {
125                                 flexcop_ibi_value vpid,vid;
126
127                                 /* set the index */
128                                 vid = fc->read_ibi_reg(fc,index_reg_310);
129                                 vid.index_reg_310.index_reg = index - 6;
130                                 fc->write_ibi_reg(fc,index_reg_310, vid);
131
132                                 vpid = fc->read_ibi_reg(fc,pid_n_reg_314);
133                                 vpid.pid_n_reg_314.PID = onoff ? pid : 0x1fff;
134                                 vpid.pid_n_reg_314.PID_enable_bit = onoff;
135                                 fc->write_ibi_reg(fc,pid_n_reg_314, vpid);
136                         }
137                         break;
138         }
139 }
140
141 static int flexcop_toggle_fullts_streaming(struct flexcop_device *fc,int onoff)
142 {
143         if (fc->fullts_streaming_state != onoff) {
144                 deb_ts("%s full TS transfer\n",onoff ? "enabling" : "disabling");
145                 flexcop_pid_group_filter(fc, 0, 0x1fe0 * (!onoff));
146                 flexcop_pid_group_filter_ctrl(fc,onoff);
147                 fc->fullts_streaming_state = onoff;
148         }
149         return 0;
150 }
151
152 int flexcop_pid_feed_control(struct flexcop_device *fc, struct dvb_demux_feed *dvbdmxfeed, int onoff)
153 {
154         int max_pid_filter = 6 + fc->has_32_hw_pid_filter*32;
155
156         fc->feedcount += onoff ? 1 : -1; /* the number of PIDs/Feed currently requested */
157         if (dvbdmxfeed->index >= max_pid_filter)
158                 fc->extra_feedcount += onoff ? 1 : -1;
159
160         /* toggle complete-TS-streaming when:
161          * - pid_filtering is not enabled and it is the first or last feed requested
162          * - pid_filtering is enabled,
163          *   - but the number of requested feeds is exceeded
164          *   - or the requested pid is 0x2000 */
165
166         if (!fc->pid_filtering && fc->feedcount == onoff)
167                 flexcop_toggle_fullts_streaming(fc,onoff);
168
169         if (fc->pid_filtering) {
170                 flexcop_pid_control(fc,dvbdmxfeed->index,dvbdmxfeed->pid,onoff);
171
172                 if (fc->extra_feedcount > 0)
173                         flexcop_toggle_fullts_streaming(fc,1);
174                 else if (dvbdmxfeed->pid == 0x2000)
175                         flexcop_toggle_fullts_streaming(fc,onoff);
176                 else
177                         flexcop_toggle_fullts_streaming(fc,0);
178         }
179
180         /* if it was the first or last feed request change the stream-status */
181         if (fc->feedcount == onoff) {
182                 flexcop_rcv_data_ctrl(fc,onoff);
183                 if (fc->stream_control) /* device specific stream control */
184                         fc->stream_control(fc,onoff);
185
186                 /* feeding stopped -> reset the flexcop filter*/
187                 if (onoff == 0) {
188                         flexcop_reset_block_300(fc);
189                         flexcop_hw_filter_init(fc);
190                 }
191         }
192
193         return 0;
194 }
195
196 void flexcop_hw_filter_init(struct flexcop_device *fc)
197 {
198         int i;
199         flexcop_ibi_value v;
200         for (i = 0; i < 6 + 32*fc->has_32_hw_pid_filter; i++)
201                 flexcop_pid_control(fc,i,0x1fff,0);
202
203         flexcop_pid_group_filter(fc, 0, 0x1fe0);
204         flexcop_pid_group_filter_ctrl(fc,0);
205
206         v = fc->read_ibi_reg(fc,pid_filter_308);
207         v.pid_filter_308.EMM_filter_4 = 1;
208         v.pid_filter_308.EMM_filter_6 = 0;
209         fc->write_ibi_reg(fc,pid_filter_308,v);
210
211         flexcop_null_filter_ctrl(fc, 1);
212 }