diff options
Diffstat (limited to 'drivers/media/video/cx23885/cimax2.c')
| -rw-r--r-- | drivers/media/video/cx23885/cimax2.c | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/drivers/media/video/cx23885/cimax2.c b/drivers/media/video/cx23885/cimax2.c new file mode 100644 index 000000000000..9a6536998d90 --- /dev/null +++ b/drivers/media/video/cx23885/cimax2.c @@ -0,0 +1,472 @@ +/* + * 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 = ®, + .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); +} |