1// SPDX-License-Identifier: LGPL-2.1-or-later
2/*
3 * Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
4 * flexcop.c - main module part
5 * Copyright (C) 2004-9 Patrick Boettcher <patrick.boettcher@posteo.de>
6 * based on skystar2-driver Copyright (C) 2003 Vadim Catana, skystar@moldova.cc
7 *
8 * Acknowledgements:
9 *   John Jurrius from BBTI, Inc. for extensive support
10 *                    with code examples and data books
11 *   Bjarne Steinsbo, bjarne at steinsbo.com (some ideas for rewriting)
12 *
13 * Contributions to the skystar2-driver have been done by
14 *   Vincenzo Di Massa, hawk.it at tiscalinet.it (several DiSEqC fixes)
15 *   Roberto Ragusa, r.ragusa at libero.it (polishing, restyling the code)
16 *   Uwe Bugla, uwe.bugla at gmx.de (doing tests, restyling code, writing docu)
17 *   Niklas Peinecke, peinecke at gdv.uni-hannover.de (hardware pid/mac
18 *               filtering)
19 */
20
21#include "flexcop.h"
22
23#define DRIVER_NAME "B2C2 FlexcopII/II(b)/III digital TV receiver chip"
24#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de"
25
26#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
27#define DEBSTATUS ""
28#else
29#define DEBSTATUS " (debugging is not enabled)"
30#endif
31
32int b2c2_flexcop_debug;
33EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
34module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
35MODULE_PARM_DESC(debug,
36		"set debug level (1=info,2=tuner,4=i2c,8=ts,16=sram,32=reg,64=i2cdump (|-able))."
37		DEBSTATUS);
38#undef DEBSTATUS
39
40DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
41
42/* global zero for ibi values */
43flexcop_ibi_value ibi_zero;
44
45static int flexcop_dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
46{
47	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
48	return flexcop_pid_feed_control(fc, dvbdmxfeed, 1);
49}
50
51static int flexcop_dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
52{
53	struct flexcop_device *fc = dvbdmxfeed->demux->priv;
54	return flexcop_pid_feed_control(fc, dvbdmxfeed, 0);
55}
56
57static int flexcop_dvb_init(struct flexcop_device *fc)
58{
59	int ret = dvb_register_adapter(&fc->dvb_adapter,
60			"FlexCop Digital TV device", fc->owner,
61			fc->dev, adapter_nr);
62	if (ret < 0) {
63		err("error registering DVB adapter");
64		return ret;
65	}
66	fc->dvb_adapter.priv = fc;
67
68	fc->demux.dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING
69			| DMX_MEMORY_BASED_FILTERING);
70	fc->demux.priv = fc;
71	fc->demux.filternum = fc->demux.feednum = FC_MAX_FEED;
72	fc->demux.start_feed = flexcop_dvb_start_feed;
73	fc->demux.stop_feed = flexcop_dvb_stop_feed;
74	fc->demux.write_to_decoder = NULL;
75
76	ret = dvb_dmx_init(&fc->demux);
77	if (ret < 0) {
78		err("dvb_dmx failed: error %d", ret);
79		goto err_dmx;
80	}
81
82	fc->hw_frontend.source = DMX_FRONTEND_0;
83
84	fc->dmxdev.filternum = fc->demux.feednum;
85	fc->dmxdev.demux = &fc->demux.dmx;
86	fc->dmxdev.capabilities = 0;
87	ret = dvb_dmxdev_init(&fc->dmxdev, &fc->dvb_adapter);
88	if (ret < 0) {
89		err("dvb_dmxdev_init failed: error %d", ret);
90		goto err_dmx_dev;
91	}
92
93	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->hw_frontend);
94	if (ret < 0) {
95		err("adding hw_frontend to dmx failed: error %d", ret);
96		goto err_dmx_add_hw_frontend;
97	}
98
99	fc->mem_frontend.source = DMX_MEMORY_FE;
100	ret = fc->demux.dmx.add_frontend(&fc->demux.dmx, &fc->mem_frontend);
101	if (ret < 0) {
102		err("adding mem_frontend to dmx failed: error %d", ret);
103		goto err_dmx_add_mem_frontend;
104	}
105
106	ret = fc->demux.dmx.connect_frontend(&fc->demux.dmx, &fc->hw_frontend);
107	if (ret < 0) {
108		err("connect frontend failed: error %d", ret);
109		goto err_connect_frontend;
110	}
111
112	ret = dvb_net_init(&fc->dvb_adapter, &fc->dvbnet, &fc->demux.dmx);
113	if (ret < 0) {
114		err("dvb_net_init failed: error %d", ret);
115		goto err_net;
116	}
117
118	fc->init_state |= FC_STATE_DVB_INIT;
119	return 0;
120
121err_net:
122	fc->demux.dmx.disconnect_frontend(&fc->demux.dmx);
123err_connect_frontend:
124	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->mem_frontend);
125err_dmx_add_mem_frontend:
126	fc->demux.dmx.remove_frontend(&fc->demux.dmx, &fc->hw_frontend);
127err_dmx_add_hw_frontend:
128	dvb_dmxdev_release(&fc->dmxdev);
129err_dmx_dev:
130	dvb_dmx_release(&fc->demux);
131err_dmx:
132	dvb_unregister_adapter(&fc->dvb_adapter);
133	return ret;
134}
135
136static void flexcop_dvb_exit(struct flexcop_device *fc)
137{
138	if (fc->init_state & FC_STATE_DVB_INIT) {
139		dvb_net_release(&fc->dvbnet);
140
141		fc->demux.dmx.close(&fc->demux.dmx);
142		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
143			&fc->mem_frontend);
144		fc->demux.dmx.remove_frontend(&fc->demux.dmx,
145			&fc->hw_frontend);
146		dvb_dmxdev_release(&fc->dmxdev);
147		dvb_dmx_release(&fc->demux);
148		dvb_unregister_adapter(&fc->dvb_adapter);
149		deb_info("deinitialized dvb stuff\n");
150	}
151	fc->init_state &= ~FC_STATE_DVB_INIT;
152}
153
154/* these methods are necessary to achieve the long-term-goal of hiding the
155 * struct flexcop_device from the bus-parts */
156void flexcop_pass_dmx_data(struct flexcop_device *fc, u8 *buf, u32 len)
157{
158	dvb_dmx_swfilter(&fc->demux, buf, len);
159}
160EXPORT_SYMBOL(flexcop_pass_dmx_data);
161
162void flexcop_pass_dmx_packets(struct flexcop_device *fc, u8 *buf, u32 no)
163{
164	dvb_dmx_swfilter_packets(&fc->demux, buf, no);
165}
166EXPORT_SYMBOL(flexcop_pass_dmx_packets);
167
168static void flexcop_reset(struct flexcop_device *fc)
169{
170	flexcop_ibi_value v210, v204;
171
172	/* reset the flexcop itself */
173	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
174
175	v210.raw = 0;
176	v210.sw_reset_210.reset_block_000 = 1;
177	v210.sw_reset_210.reset_block_100 = 1;
178	v210.sw_reset_210.reset_block_200 = 1;
179	v210.sw_reset_210.reset_block_300 = 1;
180	v210.sw_reset_210.reset_block_400 = 1;
181	v210.sw_reset_210.reset_block_500 = 1;
182	v210.sw_reset_210.reset_block_600 = 1;
183	v210.sw_reset_210.reset_block_700 = 1;
184	v210.sw_reset_210.Block_reset_enable = 0xb2;
185	v210.sw_reset_210.Special_controls = 0xc259;
186	fc->write_ibi_reg(fc,sw_reset_210,v210);
187	msleep(1);
188
189	/* reset the periphical devices */
190
191	v204 = fc->read_ibi_reg(fc,misc_204);
192	v204.misc_204.Per_reset_sig = 0;
193	fc->write_ibi_reg(fc,misc_204,v204);
194	msleep(1);
195	v204.misc_204.Per_reset_sig = 1;
196	fc->write_ibi_reg(fc,misc_204,v204);
197}
198
199void flexcop_reset_block_300(struct flexcop_device *fc)
200{
201	flexcop_ibi_value v208_save = fc->read_ibi_reg(fc, ctrl_208),
202			  v210 = fc->read_ibi_reg(fc, sw_reset_210);
203
204	deb_rdump("208: %08x, 210: %08x\n", v208_save.raw, v210.raw);
205	fc->write_ibi_reg(fc,ctrl_208,ibi_zero);
206
207	v210.sw_reset_210.reset_block_300 = 1;
208	v210.sw_reset_210.Block_reset_enable = 0xb2;
209
210	fc->write_ibi_reg(fc,sw_reset_210,v210);
211	fc->write_ibi_reg(fc,ctrl_208,v208_save);
212}
213
214struct flexcop_device *flexcop_device_kmalloc(size_t bus_specific_len)
215{
216	void *bus;
217	struct flexcop_device *fc = kzalloc(sizeof(struct flexcop_device),
218				GFP_KERNEL);
219	if (!fc) {
220		err("no memory");
221		return NULL;
222	}
223
224	bus = kzalloc(bus_specific_len, GFP_KERNEL);
225	if (!bus) {
226		err("no memory");
227		kfree(fc);
228		return NULL;
229	}
230
231	fc->bus_specific = bus;
232
233	return fc;
234}
235EXPORT_SYMBOL(flexcop_device_kmalloc);
236
237void flexcop_device_kfree(struct flexcop_device *fc)
238{
239	kfree(fc->bus_specific);
240	kfree(fc);
241}
242EXPORT_SYMBOL(flexcop_device_kfree);
243
244int flexcop_device_initialize(struct flexcop_device *fc)
245{
246	int ret;
247	ibi_zero.raw = 0;
248
249	flexcop_reset(fc);
250	flexcop_determine_revision(fc);
251	flexcop_sram_init(fc);
252	flexcop_hw_filter_init(fc);
253	flexcop_smc_ctrl(fc, 0);
254
255	ret = flexcop_dvb_init(fc);
256	if (ret)
257		goto error;
258
259	/* i2c has to be done before doing EEProm stuff -
260	 * because the EEProm is accessed via i2c */
261	ret = flexcop_i2c_init(fc);
262	if (ret)
263		goto error;
264
265	/* do the MAC address reading after initializing the dvb_adapter */
266	if (fc->get_mac_addr(fc, 0) == 0) {
267		u8 *b = fc->dvb_adapter.proposed_mac;
268		info("MAC address = %pM", b);
269		flexcop_set_mac_filter(fc,b);
270		flexcop_mac_filter_ctrl(fc,1);
271	} else
272		warn("reading of MAC address failed.\n");
273
274	ret = flexcop_frontend_init(fc);
275	if (ret)
276		goto error;
277
278	flexcop_device_name(fc,"initialization of","complete");
279	return 0;
280
281error:
282	flexcop_device_exit(fc);
283	return ret;
284}
285EXPORT_SYMBOL(flexcop_device_initialize);
286
287void flexcop_device_exit(struct flexcop_device *fc)
288{
289	flexcop_frontend_exit(fc);
290	flexcop_i2c_exit(fc);
291	flexcop_dvb_exit(fc);
292}
293EXPORT_SYMBOL(flexcop_device_exit);
294
295static int flexcop_module_init(void)
296{
297	info(DRIVER_NAME " loaded successfully");
298	return 0;
299}
300
301static void flexcop_module_cleanup(void)
302{
303	info(DRIVER_NAME " unloaded successfully");
304}
305
306module_init(flexcop_module_init);
307module_exit(flexcop_module_cleanup);
308
309MODULE_AUTHOR(DRIVER_AUTHOR);
310MODULE_DESCRIPTION(DRIVER_NAME);
311MODULE_LICENSE("GPL");
312