diff options
Diffstat (limited to 'drivers/media/pci/ddbridge/ddbridge-ci.c')
| -rw-r--r-- | drivers/media/pci/ddbridge/ddbridge-ci.c | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/drivers/media/pci/ddbridge/ddbridge-ci.c b/drivers/media/pci/ddbridge/ddbridge-ci.c new file mode 100644 index 000000000..ee20813c3 --- /dev/null +++ b/drivers/media/pci/ddbridge/ddbridge-ci.c @@ -0,0 +1,377 @@ +// 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(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; + } +} |