drivers/media/video/cx23885/cimax2.c - LeafOS-Devices/android_kernel_samsung_gta4xl - Gitiles

 /*
  * cimax2.c
  *
  * CIMax2(R) SP2 driver in conjunction with NetUp Dual DVB-S2 CI card
  *
  * Copyright (C) 2009 NetUP Inc.
  * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
  * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */

 #include "cx23885.h"
 #include "dvb_ca_en50221.h"
 /**** Bit definitions for MC417_RWD and MC417_OEN registers  ***
   bits 31-16
 +-----------+
 | Reserved  |
 +-----------+
   bit 15  bit 14  bit 13 bit 12  bit 11  bit 10  bit 9   bit 8
 +-------+-------+-------+-------+-------+-------+-------+-------+
 |  WR#  |  RD#  |       |  ACK# |  ADHI |  ADLO |  CS1# |  CS0# |
 +-------+-------+-------+-------+-------+-------+-------+-------+
  bit 7   bit 6   bit 5   bit 4   bit 3   bit 2   bit 1   bit 0
 +-------+-------+-------+-------+-------+-------+-------+-------+
 |  DATA7|  DATA6|  DATA5|  DATA4|  DATA3|  DATA2|  DATA1|  DATA0|
 +-------+-------+-------+-------+-------+-------+-------+-------+
 ***/
 /* MC417 */
 #define NETUP_DATA		0x000000ff
 #define NETUP_WR		0x00008000
 #define NETUP_RD		0x00004000
 #define NETUP_ACK		0x00001000
 #define NETUP_ADHI		0x00000800
 #define NETUP_ADLO		0x00000400
 #define NETUP_CS1		0x00000200
 #define NETUP_CS0		0x00000100
 #define NETUP_EN_ALL		0x00001000
 #define NETUP_CTRL_OFF		(NETUP_CS1 | NETUP_CS0 | NETUP_WR | NETUP_RD)
 #define NETUP_CI_CTL		0x04
 #define NETUP_CI_RD		1


 static unsigned int ci_dbg;
 module_param(ci_dbg, int, 0644);
 MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");

 #define ci_dbg_print(args...) \
 	do { \
 		if (ci_dbg) \
 			printk(KERN_DEBUG args); \
 	} while (0)

 /* stores all private variables for communication with CI */
 struct netup_ci_state {
 	struct dvb_ca_en50221 ca;
 	struct mutex ca_mutex;
 	struct i2c_adapter *i2c_adap;
 	u8 ci_i2c_addr;
 	int status;
 	struct work_struct work;
 	void *priv;
 };

 struct mutex gpio_mutex;/* Two CiMax's uses same GPIO lines */

 int netup_read_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
 						u8 *buf, int len)
 {
 	int ret;
 	struct i2c_msg msg[] = {
 		{
 			.addr	= addr,
 			.flags	= 0,
 			.buf	= &reg,
 			.len	= 1
 		}, {
 			.addr	= addr,
 			.flags	= I2C_M_RD,
 			.buf	= buf,
 			.len	= len
 		}
 	};

 	ret = i2c_transfer(i2c_adap, msg, 2);

 	if (ret != 2) {
 		ci_dbg_print("%s: i2c read error, Reg = 0x%02x, Status = %d\n",
 						__func__, reg, ret);

 		return -1;
 	}

 	ci_dbg_print("%s: i2c read Addr=0x%04x, Reg = 0x%02x, data = %02x\n",
 						__func__, addr, reg, buf[0]);

 	return 0;
 }

 int netup_write_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
 						u8 *buf, int len)
 {
 	int ret;
 	u8 buffer[len + 1];

 	struct i2c_msg msg = {
 		.addr	= addr,
 		.flags	= 0,
 		.buf	= &buffer[0],
 		.len	= len + 1
 	};

 	buffer[0] = reg;
 	memcpy(&buffer[1], buf, len);

 	ret = i2c_transfer(i2c_adap, &msg, 1);

 	if (ret != 1) {
 		ci_dbg_print("%s: i2c write error, Reg=[0x%02x], Status=%d\n",
 						__func__, reg, ret);
 		return -1;
 	}

 	return 0;
 }

 int netup_ci_get_mem(struct cx23885_dev *dev)
 {
 	int mem;
 	unsigned long timeout = jiffies + msecs_to_jiffies(1);

 	for (;;) {
 		mem = cx_read(MC417_RWD);
 		if ((mem & NETUP_ACK) == 0)
 			break;
 		if (time_after(jiffies, timeout))
 			break;
 		udelay(1);
 	}

 	cx_set(MC417_RWD, NETUP_CTRL_OFF);

 	return mem & 0xff;
 }

 int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
 				u8 flag, u8 read, int addr, u8 data)
 {
 	struct netup_ci_state *state = en50221->data;
 	struct cx23885_tsport *port = state->priv;
 	struct cx23885_dev *dev = port->dev;

 	u8 store;
 	int mem;
 	int ret;

 	if (0 != slot)
 		return -EINVAL;

 	ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
 							0, &store, 1);
 	if (ret != 0)
 		return ret;

 	store &= ~0x0c;
 	store |= flag;

 	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 							0, &store, 1);
 	if (ret != 0)
 		return ret;

 	mutex_lock(&gpio_mutex);

 	/* write addr */
 	cx_write(MC417_OEN, NETUP_EN_ALL);
 	cx_write(MC417_RWD, NETUP_CTRL_OFF |
 				NETUP_ADLO | (0xff & addr));
 	cx_clear(MC417_RWD, NETUP_ADLO);
 	cx_write(MC417_RWD, NETUP_CTRL_OFF |
 				NETUP_ADHI | (0xff & (addr >> 8)));
 	cx_clear(MC417_RWD, NETUP_ADHI);

 	if (read) /* data in */
 		cx_write(MC417_OEN, NETUP_EN_ALL | NETUP_DATA);
 	else /* data out */
 		cx_write(MC417_RWD, NETUP_CTRL_OFF | data);

 	/* choose chip */
 	cx_clear(MC417_RWD,
 			(state->ci_i2c_addr == 0x40) ? NETUP_CS0 : NETUP_CS1);
 	/* read/write */
 	cx_clear(MC417_RWD, (read) ? NETUP_RD : NETUP_WR);
 	mem = netup_ci_get_mem(dev);

 	mutex_unlock(&gpio_mutex);

 	if (!read)
 		if (mem < 0)
 			return -EREMOTEIO;

 	ci_dbg_print("%s: %s: addr=[0x%02x], %s=%x\n", __func__,
 			(read) ? "read" : "write", addr,
 			(flag == NETUP_CI_CTL) ? "ctl" : "mem",
 			(read) ? mem : data);

 	if (read)
 		return mem;

 	return 0;
 }

 int netup_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
 						int slot, int addr)
 {
 	return netup_ci_op_cam(en50221, slot, 0, NETUP_CI_RD, addr, 0);
 }

 int netup_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
 						int slot, int addr, u8 data)
 {
 	return netup_ci_op_cam(en50221, slot, 0, 0, addr, data);
 }

 int netup_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
 {
 	return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL,
 							NETUP_CI_RD, addr, 0);
 }

 int netup_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot,
 							u8 addr, u8 data)
 {
 	return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL, 0, addr, data);
 }

 int netup_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
 {
 	struct netup_ci_state *state = en50221->data;
 	u8 buf =  0x80;
 	int ret;

 	if (0 != slot)
 		return -EINVAL;

 	udelay(500);
 	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 							0, &buf, 1);

 	if (ret != 0)
 		return ret;

 	udelay(500);

 	buf = 0x00;
 	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 							0, &buf, 1);

 	msleep(1000);
 	dvb_ca_en50221_camready_irq(&state->ca, 0);

 	return 0;

 }

 int netup_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
 {
 	/* not implemented */
 	return 0;
 }

 int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
 {
 	struct netup_ci_state *state = en50221->data;
 	u8 buf = 0x60;

 	if (0 != slot)
 		return -EINVAL;

 	return netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 							0, &buf, 1);
 }

 /* work handler */
 static void netup_read_ci_status(struct work_struct *work)
 {
 	struct netup_ci_state *state =
 			container_of(work, struct netup_ci_state, work);
 	u8 buf[33];
 	int ret;

 	ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
 							0, &buf[0], 33);

 	if (ret != 0)
 		return;

 	ci_dbg_print("%s: Slot Status Addr=[0x%04x], Reg=[0x%02x], data=%02x, "
 		"TS config = %02x\n", __func__, state->ci_i2c_addr, 0, buf[0],
 		buf[32]);

 	if (buf[0] && 1)
 		state->status = DVB_CA_EN50221_POLL_CAM_PRESENT |
 			DVB_CA_EN50221_POLL_CAM_READY;
 	else
 		state->status = 0;
 }

 /* CI irq handler */
 int netup_ci_slot_status(struct cx23885_dev *dev, u32 pci_status)
 {
 	struct cx23885_tsport *port = NULL;
 	struct netup_ci_state *state = NULL;

 	if (pci_status & PCI_MSK_GPIO0)
 		port = &dev->ts1;
 	else if (pci_status & PCI_MSK_GPIO1)
 		port = &dev->ts2;
 	else /* who calls ? */
 		return 0;

 	state = port->port_priv;

 	schedule_work(&state->work);

 	return 1;
 }

 int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
 {
 	struct netup_ci_state *state = en50221->data;

 	if (0 != slot)
 		return -EINVAL;

 	return state->status;
 }

 int netup_ci_init(struct cx23885_tsport *port)
 {
 	struct netup_ci_state *state;
 	u8 cimax_init[34] = {
 		0x00, /* module A control*/
 		0x00, /* auto select mask high A */
 		0x00, /* auto select mask low A */
 		0x00, /* auto select pattern high A */
 		0x00, /* auto select pattern low A */
 		0x44, /* memory access time A */
 		0x00, /* invert input A */
 		0x00, /* RFU */
 		0x00, /* RFU */
 		0x00, /* module B control*/
 		0x00, /* auto select mask high B */
 		0x00, /* auto select mask low B */
 		0x00, /* auto select pattern high B */
 		0x00, /* auto select pattern low B */
 		0x44, /* memory access time B */
 		0x00, /* invert input B */
 		0x00, /* RFU */
 		0x00, /* RFU */
 		0x00, /* auto select mask high Ext */
 		0x00, /* auto select mask low Ext */
 		0x00, /* auto select pattern high Ext */
 		0x00, /* auto select pattern low Ext */
 		0x00, /* RFU */
 		0x02, /* destination - module A */
 		0x01, /* power on (use it like store place) */
 		0x00, /* RFU */
 		0x00, /* int status read only */
 		0x01, /* all int unmasked */
 		0x04, /* int config */
 		0x00, /* USCG1 */
 		0x04, /* ack active low */
 		0x00, /* LOCK = 0 */
 		0x33, /* serial mode, rising in, rising out, MSB first*/
 		0x31, /* syncronization */
 	};
 	int ret;

 	ci_dbg_print("%s\n", __func__);
 	state = kzalloc(sizeof(struct netup_ci_state), GFP_KERNEL);
 	if (!state) {
 		ci_dbg_print("%s: Unable create CI structure!\n", __func__);
 		ret = -ENOMEM;
 		goto err;
 	}

 	port->port_priv = state;

 	switch (port->nr) {
 	case 1:
 		state->ci_i2c_addr = 0x40;
 		mutex_init(&gpio_mutex);
 		break;
 	case 2:
 		state->ci_i2c_addr = 0x41;
 		break;
 	}

 	state->i2c_adap = &port->dev->i2c_bus[0].i2c_adap;
 	state->ca.owner = THIS_MODULE;
 	state->ca.read_attribute_mem = netup_ci_read_attribute_mem;
 	state->ca.write_attribute_mem = netup_ci_write_attribute_mem;
 	state->ca.read_cam_control = netup_ci_read_cam_ctl;
 	state->ca.write_cam_control = netup_ci_write_cam_ctl;
 	state->ca.slot_reset = netup_ci_slot_reset;
 	state->ca.slot_shutdown = netup_ci_slot_shutdown;
 	state->ca.slot_ts_enable = netup_ci_slot_ts_ctl;
 	state->ca.poll_slot_status = netup_poll_ci_slot_status;
 	state->ca.data = state;
 	state->priv = port;

 	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 						0, &cimax_init[0], 34);
 	/* lock registers */
 	ret |= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 						0x1f, &cimax_init[0x18], 1);
 	/* power on slots */
 	ret |= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
 						0x18, &cimax_init[0x18], 1);

 	if (0 != ret)
 		goto err;

 	ret = dvb_ca_en50221_init(&port->frontends.adapter,
 				   &state->ca,
 				   /* flags */ 0,
 				   /* n_slots */ 1);
 	if (0 != ret)
 		goto err;

 	INIT_WORK(&state->work, netup_read_ci_status);

 	ci_dbg_print("%s: CI initialized!\n", __func__);

 	return 0;
 err:
 	ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret);
 	kfree(state);
 	return ret;
 }

 void netup_ci_exit(struct cx23885_tsport *port)
 {
 	struct netup_ci_state *state;

 	if (NULL == port)
 		return;

 	state = (struct netup_ci_state *)port->port_priv;
 	if (NULL == state)
 		return;

 	if (NULL == state->ca.data)
 		return;

 	dvb_ca_en50221_release(&state->ca);
 	kfree(state);
 }
	/*
	* cimax2.c
	*
	* CIMax2(R) SP2 driver in conjunction with NetUp Dual DVB-S2 CI card
	*
	* Copyright (C) 2009 NetUP Inc.
	* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
	* Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	*
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	*/

	#include "cx23885.h"
	#include "dvb_ca_en50221.h"
	/** Bit definitions for MC417_RWD and MC417_OEN registers *
	bits 31-16
	+-----------+
	\| Reserved \|
	+-----------+
	bit 15 bit 14 bit 13 bit 12 bit 11 bit 10 bit 9 bit 8
	+-------+-------+-------+-------+-------+-------+-------+-------+
	\| WR# \| RD# \| \| ACK# \| ADHI \| ADLO \| CS1# \| CS0# \|
	+-------+-------+-------+-------+-------+-------+-------+-------+
	bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
	+-------+-------+-------+-------+-------+-------+-------+-------+
	\| DATA7\| DATA6\| DATA5\| DATA4\| DATA3\| DATA2\| DATA1\| DATA0\|
	+-------+-------+-------+-------+-------+-------+-------+-------+
	***/
	/* MC417 */
	#define NETUP_DATA 0x000000ff
	#define NETUP_WR 0x00008000
	#define NETUP_RD 0x00004000
	#define NETUP_ACK 0x00001000
	#define NETUP_ADHI 0x00000800
	#define NETUP_ADLO 0x00000400
	#define NETUP_CS1 0x00000200
	#define NETUP_CS0 0x00000100
	#define NETUP_EN_ALL 0x00001000
	#define NETUP_CTRL_OFF (NETUP_CS1 \| NETUP_CS0 \| NETUP_WR \| NETUP_RD)
	#define NETUP_CI_CTL 0x04
	#define NETUP_CI_RD 1


	static unsigned int ci_dbg;
	module_param(ci_dbg, int, 0644);
	MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");

	#define ci_dbg_print(args...) \
	do { \
	if (ci_dbg) \
	printk(KERN_DEBUG args); \
	} while (0)

	/* stores all private variables for communication with CI */
	struct netup_ci_state {
	struct dvb_ca_en50221 ca;
	struct mutex ca_mutex;
	struct i2c_adapter *i2c_adap;
	u8 ci_i2c_addr;
	int status;
	struct work_struct work;
	void *priv;
	};

	struct mutex gpio_mutex;/* Two CiMax's uses same GPIO lines */

	int netup_read_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
	u8 *buf, int len)
	{
	int ret;
	struct i2c_msg msg[] = {
	{
	.addr = addr,
	.flags = 0,
	.buf = &reg,
	.len = 1
	}, {
	.addr = addr,
	.flags = I2C_M_RD,
	.buf = buf,
	.len = len
	}
	};

	ret = i2c_transfer(i2c_adap, msg, 2);

	if (ret != 2) {
	ci_dbg_print("%s: i2c read error, Reg = 0x%02x, Status = %d\n",
	__func__, reg, ret);

	return -1;
	}

	ci_dbg_print("%s: i2c read Addr=0x%04x, Reg = 0x%02x, data = %02x\n",
	__func__, addr, reg, buf[0]);

	return 0;
	}

	int netup_write_i2c(struct i2c_adapter *i2c_adap, u8 addr, u8 reg,
	u8 *buf, int len)
	{
	int ret;
	u8 buffer[len + 1];

	struct i2c_msg msg = {
	.addr = addr,
	.flags = 0,
	.buf = &buffer[0],
	.len = len + 1
	};

	buffer[0] = reg;
	memcpy(&buffer[1], buf, len);

	ret = i2c_transfer(i2c_adap, &msg, 1);

	if (ret != 1) {
	ci_dbg_print("%s: i2c write error, Reg=[0x%02x], Status=%d\n",
	__func__, reg, ret);
	return -1;
	}

	return 0;
	}

	int netup_ci_get_mem(struct cx23885_dev *dev)
	{
	int mem;
	unsigned long timeout = jiffies + msecs_to_jiffies(1);

	for (;;) {
	mem = cx_read(MC417_RWD);
	if ((mem & NETUP_ACK) == 0)
	break;
	if (time_after(jiffies, timeout))
	break;
	udelay(1);
	}

	cx_set(MC417_RWD, NETUP_CTRL_OFF);

	return mem & 0xff;
	}

	int netup_ci_op_cam(struct dvb_ca_en50221 *en50221, int slot,
	u8 flag, u8 read, int addr, u8 data)
	{
	struct netup_ci_state *state = en50221->data;
	struct cx23885_tsport *port = state->priv;
	struct cx23885_dev *dev = port->dev;

	u8 store;
	int mem;
	int ret;

	if (0 != slot)
	return -EINVAL;

	ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &store, 1);
	if (ret != 0)
	return ret;

	store &= ~0x0c;
	store \|= flag;

	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &store, 1);
	if (ret != 0)
	return ret;

	mutex_lock(&gpio_mutex);

	/* write addr */
	cx_write(MC417_OEN, NETUP_EN_ALL);
	cx_write(MC417_RWD, NETUP_CTRL_OFF \|
	NETUP_ADLO \| (0xff & addr));
	cx_clear(MC417_RWD, NETUP_ADLO);
	cx_write(MC417_RWD, NETUP_CTRL_OFF \|
	NETUP_ADHI \| (0xff & (addr >> 8)));
	cx_clear(MC417_RWD, NETUP_ADHI);

	if (read) /* data in */
	cx_write(MC417_OEN, NETUP_EN_ALL \| NETUP_DATA);
	else /* data out */
	cx_write(MC417_RWD, NETUP_CTRL_OFF \| data);

	/* choose chip */
	cx_clear(MC417_RWD,
	(state->ci_i2c_addr == 0x40) ? NETUP_CS0 : NETUP_CS1);
	/* read/write */
	cx_clear(MC417_RWD, (read) ? NETUP_RD : NETUP_WR);
	mem = netup_ci_get_mem(dev);

	mutex_unlock(&gpio_mutex);

	if (!read)
	if (mem < 0)
	return -EREMOTEIO;

	ci_dbg_print("%s: %s: addr=[0x%02x], %s=%x\n", __func__,
	(read) ? "read" : "write", addr,
	(flag == NETUP_CI_CTL) ? "ctl" : "mem",
	(read) ? mem : data);

	if (read)
	return mem;

	return 0;
	}

	int netup_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
	int slot, int addr)
	{
	return netup_ci_op_cam(en50221, slot, 0, NETUP_CI_RD, addr, 0);
	}

	int netup_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
	int slot, int addr, u8 data)
	{
	return netup_ci_op_cam(en50221, slot, 0, 0, addr, data);
	}

	int netup_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
	{
	return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL,
	NETUP_CI_RD, addr, 0);
	}

	int netup_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot,
	u8 addr, u8 data)
	{
	return netup_ci_op_cam(en50221, slot, NETUP_CI_CTL, 0, addr, data);
	}

	int netup_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
	{
	struct netup_ci_state *state = en50221->data;
	u8 buf = 0x80;
	int ret;

	if (0 != slot)
	return -EINVAL;

	udelay(500);
	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &buf, 1);

	if (ret != 0)
	return ret;

	udelay(500);

	buf = 0x00;
	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &buf, 1);

	msleep(1000);
	dvb_ca_en50221_camready_irq(&state->ca, 0);

	return 0;

	}

	int netup_ci_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
	{
	/* not implemented */
	return 0;
	}

	int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
	{
	struct netup_ci_state *state = en50221->data;
	u8 buf = 0x60;

	if (0 != slot)
	return -EINVAL;

	return netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &buf, 1);
	}

	/* work handler */
	static void netup_read_ci_status(struct work_struct *work)
	{
	struct netup_ci_state *state =
	container_of(work, struct netup_ci_state, work);
	u8 buf[33];
	int ret;

	ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &buf[0], 33);

	if (ret != 0)
	return;

	ci_dbg_print("%s: Slot Status Addr=[0x%04x], Reg=[0x%02x], data=%02x, "
	"TS config = %02x\n", __func__, state->ci_i2c_addr, 0, buf[0],
	buf[32]);

	if (buf[0] && 1)
	state->status = DVB_CA_EN50221_POLL_CAM_PRESENT \|
	DVB_CA_EN50221_POLL_CAM_READY;
	else
	state->status = 0;
	}

	/* CI irq handler */
	int netup_ci_slot_status(struct cx23885_dev *dev, u32 pci_status)
	{
	struct cx23885_tsport *port = NULL;
	struct netup_ci_state *state = NULL;

	if (pci_status & PCI_MSK_GPIO0)
	port = &dev->ts1;
	else if (pci_status & PCI_MSK_GPIO1)
	port = &dev->ts2;
	else /* who calls ? */
	return 0;

	state = port->port_priv;

	schedule_work(&state->work);

	return 1;
	}

	int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
	{
	struct netup_ci_state *state = en50221->data;

	if (0 != slot)
	return -EINVAL;

	return state->status;
	}

	int netup_ci_init(struct cx23885_tsport *port)
	{
	struct netup_ci_state *state;
	u8 cimax_init[34] = {
	0x00, /* module A control*/
	0x00, /* auto select mask high A */
	0x00, /* auto select mask low A */
	0x00, /* auto select pattern high A */
	0x00, /* auto select pattern low A */
	0x44, /* memory access time A */
	0x00, /* invert input A */
	0x00, /* RFU */
	0x00, /* RFU */
	0x00, /* module B control*/
	0x00, /* auto select mask high B */
	0x00, /* auto select mask low B */
	0x00, /* auto select pattern high B */
	0x00, /* auto select pattern low B */
	0x44, /* memory access time B */
	0x00, /* invert input B */
	0x00, /* RFU */
	0x00, /* RFU */
	0x00, /* auto select mask high Ext */
	0x00, /* auto select mask low Ext */
	0x00, /* auto select pattern high Ext */
	0x00, /* auto select pattern low Ext */
	0x00, /* RFU */
	0x02, /* destination - module A */
	0x01, /* power on (use it like store place) */
	0x00, /* RFU */
	0x00, /* int status read only */
	0x01, /* all int unmasked */
	0x04, /* int config */
	0x00, /* USCG1 */
	0x04, /* ack active low */
	0x00, /* LOCK = 0 */
	0x33, /* serial mode, rising in, rising out, MSB first*/
	0x31, /* syncronization */
	};
	int ret;

	ci_dbg_print("%s\n", __func__);
	state = kzalloc(sizeof(struct netup_ci_state), GFP_KERNEL);
	if (!state) {
	ci_dbg_print("%s: Unable create CI structure!\n", __func__);
	ret = -ENOMEM;
	goto err;
	}

	port->port_priv = state;

	switch (port->nr) {
	case 1:
	state->ci_i2c_addr = 0x40;
	mutex_init(&gpio_mutex);
	break;
	case 2:
	state->ci_i2c_addr = 0x41;
	break;
	}

	state->i2c_adap = &port->dev->i2c_bus[0].i2c_adap;
	state->ca.owner = THIS_MODULE;
	state->ca.read_attribute_mem = netup_ci_read_attribute_mem;
	state->ca.write_attribute_mem = netup_ci_write_attribute_mem;
	state->ca.read_cam_control = netup_ci_read_cam_ctl;
	state->ca.write_cam_control = netup_ci_write_cam_ctl;
	state->ca.slot_reset = netup_ci_slot_reset;
	state->ca.slot_shutdown = netup_ci_slot_shutdown;
	state->ca.slot_ts_enable = netup_ci_slot_ts_ctl;
	state->ca.poll_slot_status = netup_poll_ci_slot_status;
	state->ca.data = state;
	state->priv = port;

	ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0, &cimax_init[0], 34);
	/* lock registers */
	ret \|= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0x1f, &cimax_init[0x18], 1);
	/* power on slots */
	ret \|= netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
	0x18, &cimax_init[0x18], 1);

	if (0 != ret)
	goto err;

	ret = dvb_ca_en50221_init(&port->frontends.adapter,
	&state->ca,
	/* flags */ 0,
	/* n_slots */ 1);
	if (0 != ret)
	goto err;

	INIT_WORK(&state->work, netup_read_ci_status);

	ci_dbg_print("%s: CI initialized!\n", __func__);

	return 0;
	err:
	ci_dbg_print("%s: Cannot initialize CI: Error %d.\n", __func__, ret);
	kfree(state);
	return ret;
	}

	void netup_ci_exit(struct cx23885_tsport *port)
	{
	struct netup_ci_state *state;

	if (NULL == port)
	return;

	state = (struct netup_ci_state *)port->port_priv;
	if (NULL == state)
	return;

	if (NULL == state->ca.data)
	return;

	dvb_ca_en50221_release(&state->ca);
	kfree(state);
	}