redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity
alistair23-linux/drivers/media/pci/ddbridge/ddbridge-ci.c
Daniel Scheller c966453b13 media: ddbridge: use common DVB I2C client handling helpers 
Instead of keeping duplicated I2C client handling construct, make use of
the newly introduced dvb_module_*() helpers. This not only keeps things
way cleaner and removes the need for duplicated I2C client attach code,
but even allows to get rid of some variables that won't help in making
things look cleaner anymore.

The check on a valid ptr on port->en isn't really needed since the cxd2099
driver will set it at a time where it is going to return successfully
from probing.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-03-08 06:06:51 -05:00

389 lines
9.2 KiB
C
Raw Blame History

/*
* ddbridge-ci.c: Digital Devices bridge CI (DuoFlex, CI Bridge) support
*
* Copyright (C) 2010-2017 Digital Devices GmbH
* Marcus Metzler <mocm@metzlerbros.de>
* Ralph Metzler <rjkm@metzlerbros.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, as published by the Free Software Foundation.
*
* 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.
*
* To obtain the license, point your browser to
* http://www.gnu.org/copyleft/gpl.html
*/
#include "ddbridge.h"
#include "ddbridge-regs.h"
#include "ddbridge-ci.h"
#include "ddbridge-io.h"
#include "ddbridge-i2c.h"
#include "cxd2099.h"
/* Octopus CI internal CI interface */
static int wait_ci_ready(struct ddb_ci *ci)
{
u32 count = 10;
ndelay(500);
do {
if (ddbreadl(ci->port->dev,
CI_CONTROL(ci->nr)) & CI_READY)
break;
usleep_range(1, 2);
if ((--count) == 0)
return -1;
} while (1);
return 0;
}
static int read_attribute_mem(struct dvb_ca_en50221 *ca,
int slot, int address)
{
struct ddb_ci *ci = ca->data;
u32 val, off = (address >> 1) & (CI_BUFFER_SIZE - 1);
if (address > CI_BUFFER_SIZE)
return -1;
ddbwritel(ci->port->dev, CI_READ_CMD | (1 << 16) | address,
CI_DO_READ_ATTRIBUTES(ci->nr));
wait_ci_ready(ci);
val = 0xff & ddbreadl(ci->port->dev, CI_BUFFER(ci->nr) + off);
return val;
}
static int write_attribute_mem(struct dvb_ca_en50221 *ca, int slot,
int address, u8 value)
{
struct ddb_ci *ci = ca->data;
ddbwritel(ci->port->dev, CI_WRITE_CMD | (value << 16) | address,
CI_DO_ATTRIBUTE_RW(ci->nr));
wait_ci_ready(ci);
return 0;
}
static int read_cam_control(struct dvb_ca_en50221 *ca,
int slot, u8 address)
{
u32 count = 100;
struct ddb_ci *ci = ca->data;
u32 res;
ddbwritel(ci->port->dev, CI_READ_CMD | address,
CI_DO_IO_RW(ci->nr));
ndelay(500);
do {
res = ddbreadl(ci->port->dev, CI_READDATA(ci->nr));
if (res & CI_READY)
break;
usleep_range(1, 2);
if ((--count) == 0)
return -1;
} while (1);
return 0xff & res;
}
static int write_cam_control(struct dvb_ca_en50221 *ca, int slot,
u8 address, u8 value)
{
struct ddb_ci *ci = ca->data;
ddbwritel(ci->port->dev, CI_WRITE_CMD | (value << 16) | address,
CI_DO_IO_RW(ci->nr));
wait_ci_ready(ci);
return 0;
}
static int slot_reset(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
ddbwritel(ci->port->dev, CI_POWER_ON,
CI_CONTROL(ci->nr));
msleep(100);
ddbwritel(ci->port->dev, CI_POWER_ON | CI_RESET_CAM,
CI_CONTROL(ci->nr));
ddbwritel(ci->port->dev, CI_ENABLE | CI_POWER_ON | CI_RESET_CAM,
CI_CONTROL(ci->nr));
usleep_range(20, 25);
ddbwritel(ci->port->dev, CI_ENABLE | CI_POWER_ON,
CI_CONTROL(ci->nr));
return 0;
}
static int slot_shutdown(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
ddbwritel(ci->port->dev, 0, CI_CONTROL(ci->nr));
msleep(300);
return 0;
}
static int slot_ts_enable(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
u32 val = ddbreadl(ci->port->dev, CI_CONTROL(ci->nr));
ddbwritel(ci->port->dev, val | CI_BYPASS_DISABLE,
CI_CONTROL(ci->nr));
return 0;
}
static int poll_slot_status(struct dvb_ca_en50221 *ca, int slot, int open)
{
struct ddb_ci *ci = ca->data;
u32 val = ddbreadl(ci->port->dev, CI_CONTROL(ci->nr));
int stat = 0;
if (val & CI_CAM_DETECT)
stat |= DVB_CA_EN50221_POLL_CAM_PRESENT;
if (val & CI_CAM_READY)
stat |= DVB_CA_EN50221_POLL_CAM_READY;
return stat;
}
static struct dvb_ca_en50221 en_templ = {
.read_attribute_mem = read_attribute_mem,
.write_attribute_mem = write_attribute_mem,
.read_cam_control = read_cam_control,
.write_cam_control = write_cam_control,
.slot_reset = slot_reset,
.slot_shutdown = slot_shutdown,
.slot_ts_enable = slot_ts_enable,
.poll_slot_status = poll_slot_status,
};
static void ci_attach(struct ddb_port *port)
{
struct ddb_ci *ci = NULL;
ci = kzalloc(sizeof(*ci), GFP_KERNEL);
if (!ci)
return;
memcpy(&ci->en, &en_templ, sizeof(en_templ));
ci->en.data = ci;
port->en = &ci->en;
port->en_freedata = 1;
ci->port = port;
ci->nr = port->nr - 2;
}
/* DuoFlex Dual CI support */
static int write_creg(struct ddb_ci *ci, u8 data, u8 mask)
{
struct i2c_adapter *i2c = &ci->port->i2c->adap;
u8 adr = (ci->port->type == DDB_CI_EXTERNAL_XO2) ? 0x12 : 0x13;
ci->port->creg = (ci->port->creg & ~mask) | data;
return i2c_write_reg(i2c, adr, 0x02, ci->port->creg);
}
static int read_attribute_mem_xo2(struct dvb_ca_en50221 *ca,
int slot, int address)
{
struct ddb_ci *ci = ca->data;
struct i2c_adapter *i2c = &ci->port->i2c->adap;
u8 adr = (ci->port->type == DDB_CI_EXTERNAL_XO2) ? 0x12 : 0x13;
int res;
u8 val;
res = i2c_read_reg16(i2c, adr, 0x8000 | address, &val);
return res ? res : val;
}
static int write_attribute_mem_xo2(struct dvb_ca_en50221 *ca, int slot,
int address, u8 value)
{
struct ddb_ci *ci = ca->data;
struct i2c_adapter *i2c = &ci->port->i2c->adap;
u8 adr = (ci->port->type == DDB_CI_EXTERNAL_XO2) ? 0x12 : 0x13;
return i2c_write_reg16(i2c, adr, 0x8000 | address, value);
}
static int read_cam_control_xo2(struct dvb_ca_en50221 *ca,
int slot, u8 address)
{
struct ddb_ci *ci = ca->data;
struct i2c_adapter *i2c = &ci->port->i2c->adap;
u8 adr = (ci->port->type == DDB_CI_EXTERNAL_XO2) ? 0x12 : 0x13;
u8 val;
int res;
res = i2c_read_reg(i2c, adr, 0x20 | (address & 3), &val);
return res ? res : val;
}
static int write_cam_control_xo2(struct dvb_ca_en50221 *ca, int slot,
u8 address, u8 value)
{
struct ddb_ci *ci = ca->data;
struct i2c_adapter *i2c = &ci->port->i2c->adap;
u8 adr = (ci->port->type == DDB_CI_EXTERNAL_XO2) ? 0x12 : 0x13;
return i2c_write_reg(i2c, adr, 0x20 | (address & 3), value);
}
static int slot_reset_xo2(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
dev_dbg(ci->port->dev->dev, "%s\n", __func__);
write_creg(ci, 0x01, 0x01);
write_creg(ci, 0x04, 0x04);
msleep(20);
write_creg(ci, 0x02, 0x02);
write_creg(ci, 0x00, 0x04);
write_creg(ci, 0x18, 0x18);
return 0;
}
static int slot_shutdown_xo2(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
dev_dbg(ci->port->dev->dev, "%s\n", __func__);
write_creg(ci, 0x10, 0xff);
write_creg(ci, 0x08, 0x08);
return 0;
}
static int slot_ts_enable_xo2(struct dvb_ca_en50221 *ca, int slot)
{
struct ddb_ci *ci = ca->data;
dev_dbg(ci->port->dev->dev, "%s\n", __func__);
write_creg(ci, 0x00, 0x10);
return 0;
}
static int poll_slot_status_xo2(struct dvb_ca_en50221 *ca, int slot, int open)
{
struct ddb_ci *ci = ca->data;
struct i2c_adapter *i2c = &ci->port->i2c->adap;
u8 adr = (ci->port->type == DDB_CI_EXTERNAL_XO2) ? 0x12 : 0x13;
u8 val = 0;
int stat = 0;
i2c_read_reg(i2c, adr, 0x01, &val);
if (val & 2)
stat |= DVB_CA_EN50221_POLL_CAM_PRESENT;
if (val & 1)
stat |= DVB_CA_EN50221_POLL_CAM_READY;
return stat;
}
static struct dvb_ca_en50221 en_xo2_templ = {
.read_attribute_mem = read_attribute_mem_xo2,
.write_attribute_mem = write_attribute_mem_xo2,
.read_cam_control = read_cam_control_xo2,
.write_cam_control = write_cam_control_xo2,
.slot_reset = slot_reset_xo2,
.slot_shutdown = slot_shutdown_xo2,
.slot_ts_enable = slot_ts_enable_xo2,
.poll_slot_status = poll_slot_status_xo2,
};
static void ci_xo2_attach(struct ddb_port *port)
{
struct ddb_ci *ci;
ci = kzalloc(sizeof(*ci), GFP_KERNEL);
if (!ci)
return;
memcpy(&ci->en, &en_xo2_templ, sizeof(en_xo2_templ));
ci->en.data = ci;
port->en = &ci->en;
port->en_freedata = 1;
ci->port = port;
ci->nr = port->nr - 2;
ci->port->creg = 0;
write_creg(ci, 0x10, 0xff);
write_creg(ci, 0x08, 0x08);
}
static const struct cxd2099_cfg cxd_cfgtmpl = {
.bitrate = 72000,
.polarity = 1,
.clock_mode = 1,
.max_i2c = 512,
};
static int ci_cxd2099_attach(struct ddb_port *port, u32 bitrate)
{
struct cxd2099_cfg cxd_cfg = cxd_cfgtmpl;
struct i2c_client *client;
cxd_cfg.bitrate = bitrate;
cxd_cfg.en = &port->en;
client = dvb_module_probe("cxd2099", NULL, &port->i2c->adap,
0x40, &cxd_cfg);
if (!client)
goto err;
port->dvb[0].i2c_client[0] = client;
port->en_freedata = 0;
return 0;
err:
dev_err(port->dev->dev, "CXD2099AR attach failed\n");
return -ENODEV;
}
int ddb_ci_attach(struct ddb_port *port, u32 bitrate)
{
int ret;
switch (port->type) {
case DDB_CI_EXTERNAL_SONY:
ret = ci_cxd2099_attach(port, bitrate);
if (ret)
return -ENODEV;
break;
case DDB_CI_EXTERNAL_XO2:
case DDB_CI_EXTERNAL_XO2_B:
ci_xo2_attach(port);
break;
case DDB_CI_INTERNAL:
ci_attach(port);
break;
default:
return -ENODEV;
}
if (!port->en)
return -ENODEV;
dvb_ca_en50221_init(port->dvb[0].adap, port->en, 0, 1);
return 0;
}
void ddb_ci_detach(struct ddb_port *port)
{
if (port->dvb[0].dev)
dvb_unregister_device(port->dvb[0].dev);
if (port->en) {
dvb_ca_en50221_release(port->en);
dvb_module_release(port->dvb[0].i2c_client[0]);
port->dvb[0].i2c_client[0] = NULL;
/* free alloc'ed memory if needed */
if (port->en_freedata)
kfree(port->en->data);
port->en = NULL;
}
}
View git blame Copy permalink