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OpenCloudOS-Kernel/drivers/media/video/cx23885/cimax2.c

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/*
* 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
#define NETUP_IRQ_DETAM 0x1
#define NETUP_IRQ_IRQAM 0x4
static unsigned int ci_dbg;
module_param(ci_dbg, int, 0644);
MODULE_PARM_DESC(ci_dbg, "Enable CI debugging");
static unsigned int ci_irq_enable;
module_param(ci_irq_enable, int, 0644);
MODULE_PARM_DESC(ci_irq_enable, "Enable IRQ from CAM");
#define ci_dbg_print(args...) \
do { \
if (ci_dbg) \
printk(KERN_DEBUG args); \
} while (0)
#define ci_irq_flags() (ci_irq_enable ? NETUP_IRQ_IRQAM : 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;
u8 current_irq_mode;
int current_ci_flag;
unsigned long next_status_checked_time;
};
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;
if (state->current_ci_flag != flag) {
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;
};
state->current_ci_flag = flag;
mutex_lock(&dev->gpio_lock);
/* 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(&dev->gpio_lock);
if (!read)
if (mem < 0)
return -EREMOTEIO;
ci_dbg_print("%s: %s: chipaddr=[0x%x] addr=[0x%02x], %s=%x\n", __func__,
(read) ? "read" : "write", state->ci_i2c_addr, 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_set_irq(struct dvb_ca_en50221 *en50221, u8 irq_mode)
{
struct netup_ci_state *state = en50221->data;
int ret;
if (irq_mode == state->current_irq_mode)
return 0;
ci_dbg_print("%s: chipaddr=[0x%x] setting ci IRQ to [0x%x] \n",
__func__, state->ci_i2c_addr, irq_mode);
ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr,
0x1b, &irq_mode, 1);
if (ret != 0)
return ret;
state->current_irq_mode = irq_mode;
return 0;
}
int netup_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221, int slot)
{
struct netup_ci_state *state = en50221->data;
u8 buf;
if (0 != slot)
return -EINVAL;
netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
0, &buf, 1);
buf |= 0x60;
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;
/* CAM module IRQ processing. fast operation */
dvb_ca_en50221_frda_irq(&state->ca, 0);
/* CAM module INSERT/REMOVE processing. slow operation because of i2c
* transfers */
if (time_after(jiffies, state->next_status_checked_time)
|| !state->status) {
ret = netup_read_i2c(state->i2c_adap, state->ci_i2c_addr,
0, &buf[0], 33);
state->next_status_checked_time = jiffies
+ msecs_to_jiffies(1000);
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[0]);
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;
netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | ci_irq_flags())
: NETUP_IRQ_DETAM);
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 */
ci_irq_flags() | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */
0x05, /* EXTINT=active-high, INT=push-pull */
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;
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;
state->current_irq_mode = ci_irq_flags() | NETUP_IRQ_DETAM;
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);
schedule_work(&state->work);
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);
}
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