diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/ec168.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/ec168.c | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/ec168.c b/drivers/media/usb/dvb-usb-v2/ec168.c new file mode 100644 index 000000000000..ab77622c383d --- /dev/null +++ b/drivers/media/usb/dvb-usb-v2/ec168.c @@ -0,0 +1,376 @@ +/* + * E3C EC168 DVB USB driver + * + * Copyright (C) 2009 Antti Palosaari <crope@iki.fi> + * + * 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 "ec168.h" +#include "ec100.h" +#include "mxl5005s.h" + +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +static int ec168_ctrl_msg(struct dvb_usb_device *d, struct ec168_req *req) +{ + int ret; + unsigned int pipe; + u8 request, requesttype; + u8 *buf; + + switch (req->cmd) { + case DOWNLOAD_FIRMWARE: + case GPIO: + case WRITE_I2C: + case STREAMING_CTRL: + requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT); + request = req->cmd; + break; + case READ_I2C: + requesttype = (USB_TYPE_VENDOR | USB_DIR_IN); + request = req->cmd; + break; + case GET_CONFIG: + requesttype = (USB_TYPE_VENDOR | USB_DIR_IN); + request = CONFIG; + break; + case SET_CONFIG: + requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT); + request = CONFIG; + break; + case WRITE_DEMOD: + requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT); + request = DEMOD_RW; + break; + case READ_DEMOD: + requesttype = (USB_TYPE_VENDOR | USB_DIR_IN); + request = DEMOD_RW; + break; + default: + pr_err("%s: unknown command=%02x\n", KBUILD_MODNAME, req->cmd); + ret = -EINVAL; + goto error; + } + + buf = kmalloc(req->size, GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + goto error; + } + + if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) { + /* write */ + memcpy(buf, req->data, req->size); + pipe = usb_sndctrlpipe(d->udev, 0); + } else { + /* read */ + pipe = usb_rcvctrlpipe(d->udev, 0); + } + + msleep(1); /* avoid I2C errors */ + + ret = usb_control_msg(d->udev, pipe, request, requesttype, req->value, + req->index, buf, req->size, EC168_USB_TIMEOUT); + + ec168_debug_dump(request, requesttype, req->value, req->index, buf, + req->size); + + if (ret < 0) + goto err_dealloc; + else + ret = 0; + + /* read request, copy returned data to return buf */ + if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN)) + memcpy(req->data, buf, req->size); + + kfree(buf); + return ret; + +err_dealloc: + kfree(buf); +error: + pr_debug("%s: failed=%d\n", __func__, ret); + return ret; +} + +/* I2C */ +static struct ec100_config ec168_ec100_config; + +static int ec168_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], + int num) +{ + struct dvb_usb_device *d = i2c_get_adapdata(adap); + struct ec168_req req; + int i = 0; + int ret; + + if (num > 2) + return -EINVAL; + + if (mutex_lock_interruptible(&d->i2c_mutex) < 0) + return -EAGAIN; + + while (i < num) { + if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) { + if (msg[i].addr == ec168_ec100_config.demod_address) { + req.cmd = READ_DEMOD; + req.value = 0; + req.index = 0xff00 + msg[i].buf[0]; /* reg */ + req.size = msg[i+1].len; /* bytes to read */ + req.data = &msg[i+1].buf[0]; + ret = ec168_ctrl_msg(d, &req); + i += 2; + } else { + pr_err("%s: I2C read not implemented\n", + KBUILD_MODNAME); + ret = -EOPNOTSUPP; + i += 2; + } + } else { + if (msg[i].addr == ec168_ec100_config.demod_address) { + req.cmd = WRITE_DEMOD; + req.value = msg[i].buf[1]; /* val */ + req.index = 0xff00 + msg[i].buf[0]; /* reg */ + req.size = 0; + req.data = NULL; + ret = ec168_ctrl_msg(d, &req); + i += 1; + } else { + req.cmd = WRITE_I2C; + req.value = msg[i].buf[0]; /* val */ + req.index = 0x0100 + msg[i].addr; /* I2C addr */ + req.size = msg[i].len-1; + req.data = &msg[i].buf[1]; + ret = ec168_ctrl_msg(d, &req); + i += 1; + } + } + if (ret) + goto error; + + } + ret = i; + +error: + mutex_unlock(&d->i2c_mutex); + return i; +} + +static u32 ec168_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C; +} + +static struct i2c_algorithm ec168_i2c_algo = { + .master_xfer = ec168_i2c_xfer, + .functionality = ec168_i2c_func, +}; + +/* Callbacks for DVB USB */ +static int ec168_identify_state(struct dvb_usb_device *d, const char **name) +{ + int ret; + u8 reply; + struct ec168_req req = {GET_CONFIG, 0, 1, sizeof(reply), &reply}; + pr_debug("%s:\n", __func__); + + ret = ec168_ctrl_msg(d, &req); + if (ret) + goto error; + + pr_debug("%s: reply=%02x\n", __func__, reply); + + if (reply == 0x01) + ret = WARM; + else + ret = COLD; + + return ret; +error: + pr_debug("%s: failed=%d\n", __func__, ret); + return ret; +} + +static int ec168_download_firmware(struct dvb_usb_device *d, + const struct firmware *fw) +{ + int ret, len, remaining; + struct ec168_req req = {DOWNLOAD_FIRMWARE, 0, 0, 0, NULL}; + pr_debug("%s:\n", __func__); + + #define LEN_MAX 2048 /* max packet size */ + for (remaining = fw->size; remaining > 0; remaining -= LEN_MAX) { + len = remaining; + if (len > LEN_MAX) + len = LEN_MAX; + + req.size = len; + req.data = (u8 *) &fw->data[fw->size - remaining]; + req.index = fw->size - remaining; + + ret = ec168_ctrl_msg(d, &req); + if (ret) { + pr_err("%s: firmware download failed=%d\n", + KBUILD_MODNAME, ret); + goto error; + } + } + + req.size = 0; + + /* set "warm"? */ + req.cmd = SET_CONFIG; + req.value = 0; + req.index = 0x0001; + ret = ec168_ctrl_msg(d, &req); + if (ret) + goto error; + + /* really needed - no idea what does */ + req.cmd = GPIO; + req.value = 0; + req.index = 0x0206; + ret = ec168_ctrl_msg(d, &req); + if (ret) + goto error; + + /* activate tuner I2C? */ + req.cmd = WRITE_I2C; + req.value = 0; + req.index = 0x00c6; + ret = ec168_ctrl_msg(d, &req); + if (ret) + goto error; + + return ret; +error: + pr_debug("%s: failed=%d\n", __func__, ret); + return ret; +} + +static struct ec100_config ec168_ec100_config = { + .demod_address = 0xff, /* not real address, demod is integrated */ +}; + +static int ec168_ec100_frontend_attach(struct dvb_usb_adapter *adap) +{ + pr_debug("%s:\n", __func__); + adap->fe[0] = dvb_attach(ec100_attach, &ec168_ec100_config, + &adap_to_d(adap)->i2c_adap); + if (adap->fe[0] == NULL) + return -ENODEV; + + return 0; +} + +static struct mxl5005s_config ec168_mxl5003s_config = { + .i2c_address = 0xc6, + .if_freq = IF_FREQ_4570000HZ, + .xtal_freq = CRYSTAL_FREQ_16000000HZ, + .agc_mode = MXL_SINGLE_AGC, + .tracking_filter = MXL_TF_OFF, + .rssi_enable = MXL_RSSI_ENABLE, + .cap_select = MXL_CAP_SEL_ENABLE, + .div_out = MXL_DIV_OUT_4, + .clock_out = MXL_CLOCK_OUT_DISABLE, + .output_load = MXL5005S_IF_OUTPUT_LOAD_200_OHM, + .top = MXL5005S_TOP_25P2, + .mod_mode = MXL_DIGITAL_MODE, + .if_mode = MXL_ZERO_IF, + .AgcMasterByte = 0x00, +}; + +static int ec168_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap) +{ + pr_debug("%s:\n", __func__); + return dvb_attach(mxl5005s_attach, adap->fe[0], + &adap_to_d(adap)->i2c_adap, + &ec168_mxl5003s_config) == NULL ? -ENODEV : 0; +} + +static int ec168_streaming_ctrl(struct dvb_frontend *fe, int onoff) +{ + struct ec168_req req = {STREAMING_CTRL, 0x7f01, 0x0202, 0, NULL}; + pr_debug("%s: onoff=%d\n", __func__, onoff); + if (onoff) + req.index = 0x0102; + return ec168_ctrl_msg(fe_to_d(fe), &req); +} + +/* DVB USB Driver stuff */ +/* bInterfaceNumber 0 is HID + * bInterfaceNumber 1 is DVB-T */ +static struct dvb_usb_device_properties ec168_props = { + .driver_name = KBUILD_MODNAME, + .owner = THIS_MODULE, + .adapter_nr = adapter_nr, + .bInterfaceNumber = 1, + + .identify_state = ec168_identify_state, + .firmware = "dvb-usb-ec168.fw", + .download_firmware = ec168_download_firmware, + + .i2c_algo = &ec168_i2c_algo, + .frontend_attach = ec168_ec100_frontend_attach, + .tuner_attach = ec168_mxl5003s_tuner_attach, + .streaming_ctrl = ec168_streaming_ctrl, + + .num_adapters = 1, + .adapter = { + { + .stream = DVB_USB_STREAM_BULK(0x82, 6, 32 * 512), + } + }, +}; + +static const struct dvb_usb_driver_info ec168_driver_info = { + .name = "E3C EC168 reference design", + .props = &ec168_props, +}; + +static const struct usb_device_id ec168_id[] = { + { USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168), + .driver_info = (kernel_ulong_t) &ec168_driver_info }, + { USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_2), + .driver_info = (kernel_ulong_t) &ec168_driver_info }, + { USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_3), + .driver_info = (kernel_ulong_t) &ec168_driver_info }, + { USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_4), + .driver_info = (kernel_ulong_t) &ec168_driver_info }, + { USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_5), + .driver_info = (kernel_ulong_t) &ec168_driver_info }, + {} +}; +MODULE_DEVICE_TABLE(usb, ec168_id); + +static struct usb_driver ec168_driver = { + .name = KBUILD_MODNAME, + .id_table = ec168_id, + .probe = dvb_usbv2_probe, + .disconnect = dvb_usbv2_disconnect, + .suspend = dvb_usbv2_suspend, + .resume = dvb_usbv2_resume, + .no_dynamic_id = 1, + .soft_unbind = 1, +}; + +module_usb_driver(ec168_driver); + +MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); +MODULE_DESCRIPTION("E3C EC168 driver"); +MODULE_LICENSE("GPL"); |