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linux/drivers/media/pci/ddbridge/ddbridge-ci.c
Linus Torvalds bf4afc53b7 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-02-21 17:09:51 -08:00

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// SPDX-License-Identifier: GPL-2.0
/*
* 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>
*/
#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;
ci = kzalloc_obj(*ci);
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_obj(*ci);
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;
}
}
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