4 * CIMax2(R) SP2 driver in conjunction with NetUp Dual DVB-S2 CI card
6 * Copyright (C) 2009 NetUP Inc.
7 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
8 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
24 #include <media/dvb_ca_en50221.h>
26 /* Max transfer size done by I2C transfer functions */
27 #define MAX_XFER_SIZE 64
29 /**** Bit definitions for MC417_RWD and MC417_OEN registers ***
34 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8
35 +-------+-------+-------+-------+-------+-------+-------+-------+
36 | WR# | RD# | | ACK# | ADHI | ADLO | CS1# | CS0# |
37 +-------+-------+-------+-------+-------+-------+-------+-------+
38 bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
39 +-------+-------+-------+-------+-------+-------+-------+-------+
40 | DATA7| DATA6| DATA5| DATA4| DATA3| DATA2| DATA1| DATA0|
41 +-------+-------+-------+-------+-------+-------+-------+-------+
44 #define NETUP_DATA 0x000000ff
45 #define NETUP_WR 0x00008000
46 #define NETUP_RD 0x00004000
47 #define NETUP_ACK 0x00001000
48 #define NETUP_ADHI 0x00000800
49 #define NETUP_ADLO 0x00000400
50 #define NETUP_CS1 0x00000200
51 #define NETUP_CS0 0x00000100
52 #define NETUP_EN_ALL 0x00001000
53 #define NETUP_CTRL_OFF (NETUP_CS1 | NETUP_CS0 | NETUP_WR | NETUP_RD)
54 #define NETUP_CI_CTL 0x04
57 #define NETUP_IRQ_DETAM 0x1
58 #define NETUP_IRQ_IRQAM 0x4
60 static unsigned int ci_dbg;
61 module_param(ci_dbg, int, 0644);
62 MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");
64 static unsigned int ci_irq_enable;
65 module_param(ci_irq_enable, int, 0644);
66 MODULE_PARM_DESC(ci_irq_enable, "Enable IRQ from CAM");
68 #define ci_dbg_print(fmt, args...) \
71 printk(KERN_DEBUG pr_fmt("%s: " fmt), \
75 #define ci_irq_flags() (ci_irq_enable ? NETUP_IRQ_IRQAM : 0)
77 /* stores all private variables for communication with CI */
78 struct netup_ci_state {
79 struct dvb_ca_en50221 ca;
80 struct mutex ca_mutex;
81 struct i2c_adapter *i2c_adap;
84 struct work_struct work;
88 unsigned long next_status_checked_time;
92 static int netup_read_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
96 struct i2c_msg msg[] = {
110 ret = i2c_transfer(i2c_adap, msg, 2);
113 ci_dbg_print("%s: i2c read error, Reg = 0x%02x, Status = %d\n",
119 ci_dbg_print("%s: i2c read Addr=0x%04x, Reg = 0x%02x, data = %02x\n",
120 __func__, addr, reg, buf[0]);
125 static int netup_write_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
129 u8 buffer[MAX_XFER_SIZE];
131 struct i2c_msg msg = {
138 if (1 + len > sizeof(buffer)) {
139 pr_warn("%s: i2c wr reg=%04x: len=%d is too big!\n",
140 KBUILD_MODNAME, reg, len);
145 memcpy(&buffer[1], buf, len);
147 ret = i2c_transfer(i2c_adap, &msg, 1);
150 ci_dbg_print("%s: i2c write error, Reg=[0x%02x], Status=%d\n",
158 static int netup_ci_get_mem(struct cx23885_dev *dev)
161 unsigned long timeout = jiffies + msecs_to_jiffies(1);
164 mem = cx_read(MC417_RWD);
165 if ((mem & NETUP_ACK) == 0)
167 if (time_after(jiffies, timeout))
172 cx_set(MC417_RWD, NETUP_CTRL_OFF);
177 static int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
178 u8 flag, u8 read, int addr, u8 data)
180 struct netup_ci_state *state = en50221->data;
181 struct cx23885_tsport *port = state->priv;
182 struct cx23885_dev *dev = port->dev;
191 if (state->current_ci_flag != flag) {
192 ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
200 ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
205 state->current_ci_flag = flag;
207 mutex_lock(&dev->gpio_lock);
210 cx_write(MC417_OEN, NETUP_EN_ALL);
211 cx_write(MC417_RWD, NETUP_CTRL_OFF |
212 NETUP_ADLO | (0xff & addr));
213 cx_clear(MC417_RWD, NETUP_ADLO);
214 cx_write(MC417_RWD, NETUP_CTRL_OFF |
215 NETUP_ADHI | (0xff & (addr >> 8)));
216 cx_clear(MC417_RWD, NETUP_ADHI);
218 if (read) { /* data in */
219 cx_write(MC417_OEN, NETUP_EN_ALL | NETUP_DATA);
220 } else /* data out */
221 cx_write(MC417_RWD, NETUP_CTRL_OFF | data);
225 (state->ci_i2c_addr == 0x40) ? NETUP_CS0 : NETUP_CS1);
227 cx_clear(MC417_RWD, (read) ? NETUP_RD : NETUP_WR);
228 mem = netup_ci_get_mem(dev);
230 mutex_unlock(&dev->gpio_lock);
236 ci_dbg_print("%s: %s: chipaddr=[0x%x] addr=[0x%02x], %s=%x\n", __func__,
237 (read) ? "read" : "write", state->ci_i2c_addr, addr,
238 (flag == NETUP_CI_CTL) ? "ctl" : "mem",
239 (read) ? mem : data);
247 int netup_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
250 return netup_ci_op_cam(en50221, slot, 0, NETUP_CI_RD, addr, 0);
253 int netup_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
254 int slot, int addr, u8 data)
256 return netup_ci_op_cam(en50221, slot, 0, 0, addr, data);
259 int netup_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot,
262 return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL,
263 NETUP_CI_RD, addr, 0);
266 int netup_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot,
269 return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL, 0, addr, data);
272 int netup_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
274 struct netup_ci_state *state = en50221->data;
282 ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
291 ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
295 dvb_ca_en50221_camready_irq(&state->ca, 0);
301 int netup_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
303 /* not implemented */
307 static int netup_ci_set_irq(struct dvb_ca_en50221 *en50221, u8 irq_mode)
309 struct netup_ci_state *state = en50221->data;
312 if (irq_mode == state->current_irq_mode)
315 ci_dbg_print("%s: chipaddr=[0x%x] setting ci IRQ to [0x%x] \n",
316 __func__, state->ci_i2c_addr, irq_mode);
317 ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
323 state->current_irq_mode = irq_mode;
328 int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
330 struct netup_ci_state *state = en50221->data;
336 netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
340 return netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
345 static void netup_read_ci_status(struct work_struct *work)
347 struct netup_ci_state *state =
348 container_of(work, struct netup_ci_state, work);
352 /* CAM module IRQ processing. fast operation */
353 dvb_ca_en50221_frda_irq(&state->ca, 0);
355 /* CAM module INSERT/REMOVE processing. slow operation because of i2c
357 if (time_after(jiffies, state->next_status_checked_time)
359 ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
362 state->next_status_checked_time = jiffies
363 + msecs_to_jiffies(1000);
368 ci_dbg_print("%s: Slot Status Addr=[0x%04x], Reg=[0x%02x], data=%02x, TS config = %02x\n",
369 __func__, state->ci_i2c_addr, 0, buf[0], buf[0]);
373 state->status = DVB_CA_EN50221_POLL_CAM_PRESENT |
374 DVB_CA_EN50221_POLL_CAM_READY;
381 int netup_ci_slot_status(struct cx23885_dev *dev, u32 pci_status)
383 struct cx23885_tsport *port = NULL;
384 struct netup_ci_state *state = NULL;
386 ci_dbg_print("%s:\n", __func__);
388 if (0 == (pci_status & (PCI_MSK_GPIO0 | PCI_MSK_GPIO1)))
391 if (pci_status & PCI_MSK_GPIO0) {
393 state = port->port_priv;
394 schedule_work(&state->work);
395 ci_dbg_print("%s: Wakeup CI0\n", __func__);
398 if (pci_status & PCI_MSK_GPIO1) {
400 state = port->port_priv;
401 schedule_work(&state->work);
402 ci_dbg_print("%s: Wakeup CI1\n", __func__);
408 int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221,
411 struct netup_ci_state *state = en50221->data;
416 netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | ci_irq_flags())
419 return state->status;
422 int netup_ci_init(struct cx23885_tsport *port)
424 struct netup_ci_state *state;
425 u8 cimax_init[34] = {
426 0x00, /* module A control*/
427 0x00, /* auto select mask high A */
428 0x00, /* auto select mask low A */
429 0x00, /* auto select pattern high A */
430 0x00, /* auto select pattern low A */
431 0x44, /* memory access time A */
432 0x00, /* invert input A */
435 0x00, /* module B control*/
436 0x00, /* auto select mask high B */
437 0x00, /* auto select mask low B */
438 0x00, /* auto select pattern high B */
439 0x00, /* auto select pattern low B */
440 0x44, /* memory access time B */
441 0x00, /* invert input B */
444 0x00, /* auto select mask high Ext */
445 0x00, /* auto select mask low Ext */
446 0x00, /* auto select pattern high Ext */
447 0x00, /* auto select pattern low Ext */
449 0x02, /* destination - module A */
450 0x01, /* power on (use it like store place) */
452 0x00, /* int status read only */
453 ci_irq_flags() | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */
454 0x05, /* EXTINT=active-high, INT=push-pull */
456 0x04, /* ack active low */
458 0x33, /* serial mode, rising in, rising out, MSB first*/
459 0x31, /* synchronization */
463 ci_dbg_print("%s\n", __func__);
464 state = kzalloc(sizeof(struct netup_ci_state), GFP_KERNEL);
466 ci_dbg_print("%s: Unable create CI structure!\n", __func__);
471 port->port_priv = state;
475 state->ci_i2c_addr = 0x40;
478 state->ci_i2c_addr = 0x41;
482 state->i2c_adap = &port->dev->i2c_bus[0].i2c_adap;
483 state->ca.owner = THIS_MODULE;
484 state->ca.read_attribute_mem = netup_ci_read_attribute_mem;
485 state->ca.write_attribute_mem = netup_ci_write_attribute_mem;
486 state->ca.read_cam_control = netup_ci_read_cam_ctl;
487 state->ca.write_cam_control = netup_ci_write_cam_ctl;
488 state->ca.slot_reset = netup_ci_slot_reset;
489 state->ca.slot_shutdown = netup_ci_slot_shutdown;
490 state->ca.slot_ts_enable = netup_ci_slot_ts_ctl;
491 state->ca.poll_slot_status = netup_poll_ci_slot_status;
492 state->ca.data = state;
494 state->current_irq_mode = ci_irq_flags() | NETUP_IRQ_DETAM;
496 ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
497 0, &cimax_init[0], 34);
499 ret |= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
500 0x1f, &cimax_init[0x18], 1);
502 ret |= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
503 0x18, &cimax_init[0x18], 1);
508 ret = dvb_ca_en50221_init(&port->frontends.adapter,
515 INIT_WORK(&state->work, netup_read_ci_status);
516 schedule_work(&state->work);
518 ci_dbg_print("%s: CI initialized!\n", __func__);
522 ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret);
527 void netup_ci_exit(struct cx23885_tsport *port)
529 struct netup_ci_state *state;
534 state = (struct netup_ci_state *)port->port_priv;
538 if (NULL == state->ca.data)
541 dvb_ca_en50221_release(&state->ca);