--- /dev/null
+/*
+ * 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"
+
+/* debug */
+static int dvb_usb_ec168_debug;
+module_param_named(debug, dvb_usb_ec168_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+static struct ec100_config ec168_ec100_config;
+
+static int ec168_rw_udev(struct usb_device *udev, struct ec168_req *req)
+{
+ int ret;
+ unsigned int pipe;
+ u8 request, requesttype;
+ u8 buf[req->size];
+
+ 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:
+ err("unknown command:%02x", req->cmd);
+ ret = -EPERM;
+ goto error;
+ }
+
+ if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
+ /* write */
+ memcpy(buf, req->data, req->size);
+ pipe = usb_sndctrlpipe(udev, 0);
+ } else {
+ /* read */
+ pipe = usb_rcvctrlpipe(udev, 0);
+ }
+
+ msleep(1); /* avoid I2C errors */
+
+ ret = usb_control_msg(udev, pipe, request, requesttype, req->value,
+ req->index, buf, sizeof(buf), EC168_USB_TIMEOUT);
+
+ ec168_debug_dump(request, requesttype, req->value, req->index, buf,
+ req->size, deb_xfer);
+
+ if (ret < 0)
+ goto error;
+ 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);
+
+ return ret;
+error:
+ deb_info("%s: failed:%d\n", __func__, ret);
+ return ret;
+}
+
+static int ec168_ctrl_msg(struct dvb_usb_device *d, struct ec168_req *req)
+{
+ return ec168_rw_udev(d->udev, req);
+}
+
+/* I2C */
+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 {
+ err("I2C read not implemented");
+ ret = -ENOSYS;
+ 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 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)
+{
+ deb_info("%s:\n", __func__);
+ adap->fe = dvb_attach(ec100_attach, &ec168_ec100_config,
+ &adap->dev->i2c_adap);
+ if (adap->fe == 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)
+{
+ deb_info("%s:\n", __func__);
+ return dvb_attach(mxl5005s_attach, adap->fe, &adap->dev->i2c_adap,
+ &ec168_mxl5003s_config) == NULL ? -ENODEV : 0;
+}
+
+static int ec168_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
+{
+ struct ec168_req req = {STREAMING_CTRL, 0x7f01, 0x0202, 0, NULL};
+ deb_info("%s: onoff:%d\n", __func__, onoff);
+ if (onoff)
+ req.index = 0x0102;
+ return ec168_ctrl_msg(adap->dev, &req);
+}
+
+static int ec168_download_firmware(struct usb_device *udev,
+ const struct firmware *fw)
+{
+ int i, len, packets, remainder, ret;
+ u16 addr = 0x0000; /* firmware start address */
+ struct ec168_req req = {DOWNLOAD_FIRMWARE, 0, 0, 0, NULL};
+ deb_info("%s:\n", __func__);
+
+ #define FW_PACKET_MAX_DATA 2048
+ packets = fw->size / FW_PACKET_MAX_DATA;
+ remainder = fw->size % FW_PACKET_MAX_DATA;
+ len = FW_PACKET_MAX_DATA;
+ for (i = 0; i <= packets; i++) {
+ if (i == packets) /* set size of the last packet */
+ len = remainder;
+
+ req.size = len;
+ req.data = (u8 *)(fw->data + i * FW_PACKET_MAX_DATA);
+ req.index = addr;
+ addr += FW_PACKET_MAX_DATA;
+
+ ret = ec168_rw_udev(udev, &req);
+ if (ret) {
+ err("firmware download failed:%d packet:%d", ret, i);
+ goto error;
+ }
+ }
+ req.size = 0;
+
+ /* set "warm"? */
+ req.cmd = SET_CONFIG;
+ req.value = 0;
+ req.index = 0x0001;
+ ret = ec168_rw_udev(udev, &req);
+ if (ret)
+ goto error;
+
+ /* really needed - no idea what does */
+ req.cmd = GPIO;
+ req.value = 0;
+ req.index = 0x0206;
+ ret = ec168_rw_udev(udev, &req);
+ if (ret)
+ goto error;
+
+ /* activate tuner I2C? */
+ req.cmd = WRITE_I2C;
+ req.value = 0;
+ req.index = 0x00c6;
+ ret = ec168_rw_udev(udev, &req);
+ if (ret)
+ goto error;
+
+ return ret;
+error:
+ deb_info("%s: failed:%d\n", __func__, ret);
+ return ret;
+}
+
+static int ec168_identify_state(struct usb_device *udev,
+ struct dvb_usb_device_properties *props,
+ struct dvb_usb_device_description **desc, int *cold)
+{
+ int ret;
+ u8 reply;
+ struct ec168_req req = {GET_CONFIG, 0, 1, sizeof(reply), &reply};
+ deb_info("%s:\n", __func__);
+
+ ret = ec168_rw_udev(udev, &req);
+ if (ret)
+ goto error;
+
+ deb_info("%s: reply:%02x\n", __func__, reply);
+
+ if (reply == 0x01)
+ *cold = 0;
+ else
+ *cold = 1;
+
+ return ret;
+error:
+ deb_info("%s: failed:%d\n", __func__, ret);
+ return ret;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_device_properties ec168_properties;
+
+static int ec168_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ int ret;
+ deb_info("%s: interface:%d\n", __func__,
+ intf->cur_altsetting->desc.bInterfaceNumber);
+
+ ret = dvb_usb_device_init(intf, &ec168_properties, THIS_MODULE, NULL,
+ adapter_nr);
+ if (ret)
+ goto error;
+
+ return ret;
+error:
+ deb_info("%s: failed:%d\n", __func__, ret);
+ return ret;
+}
+
+#define E3C_EC168_1689 0
+#define E3C_EC168_FFFA 1
+#define E3C_EC168_FFFB 2
+#define E3C_EC168_1001 3
+#define E3C_EC168_1002 4
+
+static struct usb_device_id ec168_id[] = {
+ [E3C_EC168_1689] =
+ {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168)},
+ [E3C_EC168_FFFA] =
+ {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_2)},
+ [E3C_EC168_FFFB] =
+ {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_3)},
+ [E3C_EC168_1001] =
+ {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_4)},
+ [E3C_EC168_1002] =
+ {USB_DEVICE(USB_VID_E3C, USB_PID_E3C_EC168_5)},
+ {} /* terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, ec168_id);
+
+static struct dvb_usb_device_properties ec168_properties = {
+ .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+ .usb_ctrl = DEVICE_SPECIFIC,
+ .download_firmware = ec168_download_firmware,
+ .firmware = "dvb-usb-ec168.fw",
+ .no_reconnect = 1,
+
+ .size_of_priv = 0,
+
+ .num_adapters = 1,
+ .adapter = {
+ {
+ .streaming_ctrl = ec168_streaming_ctrl,
+ .frontend_attach = ec168_ec100_frontend_attach,
+ .tuner_attach = ec168_mxl5003s_tuner_attach,
+ .stream = {
+ .type = USB_BULK,
+ .count = 6,
+ .endpoint = 0x82,
+ .u = {
+ .bulk = {
+ .buffersize = (32*512),
+ }
+ }
+ },
+ }
+ },
+
+ .identify_state = ec168_identify_state,
+
+ .i2c_algo = &ec168_i2c_algo,
+
+ .num_device_descs = 1,
+ .devices = {
+ {
+ .name = "E3C EC168 DVB-T USB2.0 reference design",
+ .cold_ids = {
+ &ec168_id[E3C_EC168_1689],
+ &ec168_id[E3C_EC168_FFFA],
+ &ec168_id[E3C_EC168_FFFB],
+ &ec168_id[E3C_EC168_1001],
+ &ec168_id[E3C_EC168_1002],
+ NULL},
+ .warm_ids = {NULL},
+ },
+ }
+};
+
+static struct usb_driver ec168_driver = {
+ .name = "dvb_usb_ec168",
+ .probe = ec168_probe,
+ .disconnect = dvb_usb_device_exit,
+ .id_table = ec168_id,
+};
+
+/* module stuff */
+static int __init ec168_module_init(void)
+{
+ int ret;
+ deb_info("%s:\n", __func__);
+ ret = usb_register(&ec168_driver);
+ if (ret)
+ err("module init failed:%d", ret);
+
+ return ret;
+}
+
+static void __exit ec168_module_exit(void)
+{
+ deb_info("%s:\n", __func__);
+ /* deregister this driver from the USB subsystem */
+ usb_deregister(&ec168_driver);
+}
+
+module_init(ec168_module_init);
+module_exit(ec168_module_exit);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("E3C EC168 DVB-T USB2.0 driver");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-rpi.git / commitdiff