2 * CIMaX SP2/SP2HF (Atmel T90FJR) CI driver
4 * Copyright (C) 2014 Olli Salonen <olli.salonen@iki.fi>
6 * Heavily based on CIMax2(R) SP2 driver in conjunction with NetUp Dual
7 * DVB-S2 CI card (cimax2) with following copyrights:
9 * Copyright (C) 2009 NetUP Inc.
10 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
11 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
26 static int sp2_read_i2c(struct sp2 *s, u8 reg, u8 *buf, int len)
29 struct i2c_client *client = s->client;
30 struct i2c_adapter *adap = client->adapter;
31 struct i2c_msg msg[] = {
45 ret = i2c_transfer(adap, msg, 2);
48 dev_err(&client->dev, "i2c read error, reg = 0x%02x, status = %d\n",
56 dev_dbg(&s->client->dev, "addr=0x%04x, reg = 0x%02x, data = %02x\n",
57 client->addr, reg, buf[0]);
62 static int sp2_write_i2c(struct sp2 *s, u8 reg, u8 *buf, int len)
66 struct i2c_client *client = s->client;
67 struct i2c_adapter *adap = client->adapter;
68 struct i2c_msg msg = {
75 if ((len + 1) > sizeof(buffer)) {
76 dev_err(&client->dev, "i2c wr reg=%02x: len=%d is too big!\n",
82 memcpy(&buffer[1], buf, len);
84 ret = i2c_transfer(adap, &msg, 1);
87 dev_err(&client->dev, "i2c write error, reg = 0x%02x, status = %d\n",
98 static int sp2_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot, u8 acs,
99 u8 read, int addr, u8 data)
101 struct sp2 *s = en50221->data;
104 int (*ci_op_cam)(void*, u8, int, u8, int*) = s->ci_control;
106 dev_dbg(&s->client->dev, "slot=%d, acs=0x%02x, addr=0x%04x, data = 0x%02x",
107 slot, acs, addr, data);
113 * change module access type between IO space and attribute memory
116 if (s->module_access_type != acs) {
117 ret = sp2_read_i2c(s, 0x00, &store, 1);
122 store &= ~(SP2_MOD_CTL_ACS1 | SP2_MOD_CTL_ACS0);
125 ret = sp2_write_i2c(s, 0x00, &store, 1);
130 s->module_access_type = acs;
132 /* implementation of ci_op_cam is device specific */
134 ret = ci_op_cam(s->priv, read, addr, data, &mem);
136 dev_err(&s->client->dev, "callback not defined");
144 dev_dbg(&s->client->dev, "cam read, addr=0x%04x, data = 0x%04x",
152 int sp2_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
155 return sp2_ci_op_cam(en50221, slot, SP2_CI_ATTR_ACS,
159 int sp2_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
160 int slot, int addr, u8 data)
162 return sp2_ci_op_cam(en50221, slot, SP2_CI_ATTR_ACS,
163 SP2_CI_WR, addr, data);
166 int sp2_ci_read_cam_control(struct dvb_ca_en50221 *en50221,
169 return sp2_ci_op_cam(en50221, slot, SP2_CI_IO_ACS,
173 int sp2_ci_write_cam_control(struct dvb_ca_en50221 *en50221,
174 int slot, u8 addr, u8 data)
176 return sp2_ci_op_cam(en50221, slot, SP2_CI_IO_ACS,
177 SP2_CI_WR, addr, data);
180 int sp2_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
182 struct sp2 *s = en50221->data;
186 dev_dbg(&s->client->dev, "slot: %d\n", slot);
192 buf = SP2_MOD_CTL_RST;
193 ret = sp2_write_i2c(s, 0x00, &buf, 1);
198 usleep_range(500, 600);
202 ret = sp2_write_i2c(s, 0x00, &buf, 1);
212 int sp2_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
214 struct sp2 *s = en50221->data;
216 dev_dbg(&s->client->dev, "slot:%d\n", slot);
218 /* not implemented */
222 int sp2_ci_slot_ts_enable(struct dvb_ca_en50221 *en50221, int slot)
224 struct sp2 *s = en50221->data;
227 dev_dbg(&s->client->dev, "slot:%d\n", slot);
232 sp2_read_i2c(s, 0x00, &buf, 1);
234 /* disable bypass and enable TS */
235 buf |= (SP2_MOD_CTL_TSOEN | SP2_MOD_CTL_TSIEN);
236 return sp2_write_i2c(s, 0, &buf, 1);
239 int sp2_ci_poll_slot_status(struct dvb_ca_en50221 *en50221,
242 struct sp2 *s = en50221->data;
246 dev_dbg(&s->client->dev, "slot:%d open:%d\n", slot, open);
249 * CAM module INSERT/REMOVE processing. Slow operation because of i2c
250 * transfers. Throttle read to one per sec.
252 if (time_after(jiffies, s->next_status_checked_time)) {
253 ret = sp2_read_i2c(s, 0x00, buf, 1);
254 s->next_status_checked_time = jiffies + msecs_to_jiffies(1000);
259 if (buf[0] & SP2_MOD_CTL_DET)
260 s->status = DVB_CA_EN50221_POLL_CAM_PRESENT |
261 DVB_CA_EN50221_POLL_CAM_READY;
269 static int sp2_init(struct sp2 *s)
273 u8 cimax_init[34] = {
274 0x00, /* module A control*/
275 0x00, /* auto select mask high A */
276 0x00, /* auto select mask low A */
277 0x00, /* auto select pattern high A */
278 0x00, /* auto select pattern low A */
279 0x44, /* memory access time A, 600 ns */
280 0x00, /* invert input A */
283 0x00, /* module B control*/
284 0x00, /* auto select mask high B */
285 0x00, /* auto select mask low B */
286 0x00, /* auto select pattern high B */
287 0x00, /* auto select pattern low B */
288 0x44, /* memory access time B, 600 ns */
289 0x00, /* invert input B */
292 0x00, /* auto select mask high Ext */
293 0x00, /* auto select mask low Ext */
294 0x00, /* auto select pattern high Ext */
295 0x00, /* auto select pattern low Ext */
297 0x02, /* destination - module A */
298 0x01, /* power control reg, VCC power on */
300 0x00, /* int status read only */
301 0x00, /* Interrupt Mask Register */
302 0x05, /* EXTINT=active-high, INT=push-pull */
304 0x04, /* ack active low */
307 0x00, /* synchronization? */
310 dev_dbg(&s->client->dev, "\n");
312 s->ca.owner = THIS_MODULE;
313 s->ca.read_attribute_mem = sp2_ci_read_attribute_mem;
314 s->ca.write_attribute_mem = sp2_ci_write_attribute_mem;
315 s->ca.read_cam_control = sp2_ci_read_cam_control;
316 s->ca.write_cam_control = sp2_ci_write_cam_control;
317 s->ca.slot_reset = sp2_ci_slot_reset;
318 s->ca.slot_shutdown = sp2_ci_slot_shutdown;
319 s->ca.slot_ts_enable = sp2_ci_slot_ts_enable;
320 s->ca.poll_slot_status = sp2_ci_poll_slot_status;
322 s->module_access_type = 0;
324 /* initialize all regs */
325 ret = sp2_write_i2c(s, 0x00, &cimax_init[0], 34);
331 ret = sp2_write_i2c(s, 0x1f, &buf, 1);
336 ret = sp2_write_i2c(s, 0x18, &buf, 1);
340 ret = dvb_ca_en50221_init(s->dvb_adap, &s->ca, 0, 1);
347 dev_dbg(&s->client->dev, "init failed=%d\n", ret);
351 static int sp2_exit(struct i2c_client *client)
355 dev_dbg(&client->dev, "\n");
360 s = i2c_get_clientdata(client);
364 if (s->ca.data == NULL)
367 dvb_ca_en50221_release(&s->ca);
372 static int sp2_probe(struct i2c_client *client,
373 const struct i2c_device_id *id)
375 struct sp2_config *cfg = client->dev.platform_data;
379 dev_dbg(&client->dev, "\n");
381 s = kzalloc(sizeof(struct sp2), GFP_KERNEL);
384 dev_err(&client->dev, "kzalloc() failed\n");
389 s->dvb_adap = cfg->dvb_adap;
391 s->ci_control = cfg->ci_control;
393 i2c_set_clientdata(client, s);
399 dev_info(&s->client->dev, "CIMaX SP2 successfully attached\n");
402 dev_dbg(&client->dev, "init failed=%d\n", ret);
408 static int sp2_remove(struct i2c_client *client)
410 struct si2157 *s = i2c_get_clientdata(client);
412 dev_dbg(&client->dev, "\n");
421 static const struct i2c_device_id sp2_id[] = {
425 MODULE_DEVICE_TABLE(i2c, sp2_id);
427 static struct i2c_driver sp2_driver = {
429 .owner = THIS_MODULE,
433 .remove = sp2_remove,
437 module_i2c_driver(sp2_driver);
439 MODULE_DESCRIPTION("CIMaX SP2/HF CI driver");
440 MODULE_AUTHOR("Olli Salonen <olli.salonen@iki.fi>");
441 MODULE_LICENSE("GPL");