--- /dev/null
+/*
+ * DVB USB Linux driver for the HDIC receiver
+ *
+ * Copyright (C) 2011 Metropolia University of Applied Sciences, Electria R&D
+ *
+ * Author: 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 "hdic.h"
+#include "hd29l2.h"
+#include "mxl5007t.h"
+
+/* debug */
+static int dvb_usb_hdic_debug;
+module_param_named(debug, dvb_usb_hdic_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+/*
+ * I2C addresses (7bit) found by probing I2C bus:
+ * 0x48 ??
+ * 0x51 eeprom
+ * 0x60 MaxLinear MXL5007T tuner
+ * 0x73 HDIC HD29L2 demod
+ *
+ * Xtals:
+ * 24.000 MHz Cypress CY7C68013A-56 (FX2)
+ * 30.400 MHz HDIC HD29L2
+ * 24.000 MHz MaxLinear MXL5007T
+ *
+ * I/Os:
+ * RDY1 / SLWR == TS_CLK (USB_SLWR = !TS_CLK&TS_VALID)
+ * PA1 / INT1 == 29L1_RESET RST_N
+ */
+
+/*
+ * See Qanu DVB-T USB2.0 communication protocol specification for more
+ * information used USB API.
+ */
+
+/* I2C */
+static int hdic_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
+ int num)
+{
+ int ret;
+ struct dvb_usb_device *d = i2c_get_adapdata(adap);
+ u8 buf[64];
+
+ /*
+ * increase sleep when there is a lot of errors:
+ * dvb-usb: recv bulk message failed: -110
+ */
+#define HDIC_I2C_SLEEP 1
+
+ if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
+ return -EAGAIN;
+
+ if (num == 2 && !(msg[0].flags & I2C_M_RD) &&
+ (msg[1].flags & I2C_M_RD)) {
+ /* I2C write + read combination (typical register read) */
+ buf[0] = HDIC_CMD_I2C;
+ buf[1] = (msg[0].addr << 1); /* I2C write */
+ buf[2] = msg[0].len;
+ buf[3] = 1; /* no I2C stop => repeated start */
+ memcpy(&buf[4], msg[0].buf, msg[0].len);
+ ret = dvb_usb_generic_rw(d, buf, 4+msg[0].len, buf, 1,
+ HDIC_I2C_SLEEP);
+ if (ret)
+ goto err;
+
+ buf[0] = HDIC_CMD_I2C;
+ buf[1] = (msg[1].addr << 1) | 0x01; /* I2C read */
+ buf[2] = msg[1].len;
+ buf[3] = 0; /* I2C stop */
+ ret = dvb_usb_generic_rw(d, buf, 4, buf, 1+msg[1].len,
+ HDIC_I2C_SLEEP);
+ if (ret)
+ goto err;
+
+ memcpy(msg[1].buf, &buf[1], msg[1].len);
+
+ } else if (num == 1 && !(msg[0].flags & I2C_M_RD)) {
+ /* I2C write (typical register write) */
+ buf[0] = HDIC_CMD_I2C;
+ buf[1] = (msg[0].addr << 1); /* I2C write */
+ buf[2] = msg[0].len;
+ buf[3] = 0; /* I2C stop */
+ memcpy(&buf[4], msg[0].buf, msg[0].len);
+ ret = dvb_usb_generic_rw(d, buf, 4+msg[0].len, buf, 1,
+ HDIC_I2C_SLEEP);
+ if (ret)
+ goto err;
+ } else {
+ ret = -EOPNOTSUPP;
+ goto err;
+ }
+
+ usleep_range(100, 1000);
+
+ mutex_unlock(&d->i2c_mutex);
+
+ return num;
+
+err:
+ deb_info("%s: failed=%d\n", __func__, ret);
+ mutex_unlock(&d->i2c_mutex);
+ return ret;
+}
+
+static u32 hdic_i2c_func(struct i2c_adapter *adapter)
+{
+ return I2C_FUNC_I2C;
+}
+
+static struct i2c_algorithm hdic_i2c_algo = {
+ .master_xfer = hdic_i2c_xfer,
+ .functionality = hdic_i2c_func,
+};
+
+/* Callbacks for DVB USB */
+static int hdic_power_ctrl(struct dvb_usb_device *d, int enable)
+{
+ u8 sbuf[] = { HDIC_CMD_SLEEP_MODE, enable ? 0 : 1 };
+ u8 rbuf[1];
+
+ deb_info("%s: enable=%d\n", __func__, enable);
+
+ return dvb_usb_generic_rw(d, sbuf, sizeof(sbuf), rbuf, sizeof(rbuf), 0);
+}
+
+static int hdic_streaming_ctrl(struct dvb_usb_adapter *adap, int enable)
+{
+ u8 sbuf[] = { HDIC_CMD_CONTROL_STREAM_TRANSFER, enable };
+ u8 rbuf[1];
+
+ deb_info("%s: enable=%d\n", __func__, enable);
+
+ return dvb_usb_generic_rw(adap->dev, sbuf, sizeof(sbuf), rbuf,
+ sizeof(rbuf), 0);
+}
+
+/* general callback */
+static int hdic_frontend_callback(void *priv, int component, int cmd, int arg)
+{
+ int ret;
+ struct dvb_frontend *fe = priv;
+ struct dvb_usb_adapter *adap = fe->dvb->priv;
+ u8 sbuf[2] = { HDIC_CMD_DEMOD_RESET };
+ u8 rbuf[1];
+
+ deb_info("%s:\n", __func__);
+
+ /* enable demod reset */
+ sbuf[1] = 1;
+ ret = dvb_usb_generic_rw(adap->dev, sbuf, sizeof(sbuf),
+ rbuf, sizeof(rbuf), 0);
+ if (ret)
+ deb_info("%s: failed enable demod reset\n", __func__);
+
+ usleep_range(100, 10000);
+
+ /* disable demod reset */
+ sbuf[1] = 0;
+ ret = dvb_usb_generic_rw(adap->dev, sbuf, sizeof(sbuf), rbuf,
+ sizeof(rbuf), 0);
+ if (ret)
+ deb_info("%s: failed disable demod reset\n", __func__);
+
+ return 0;
+}
+
+static struct hd29l2_config hdic_hd29l2_config = {
+ .i2c_addr = 0x73,
+ .tuner_i2c_addr = 0x60,
+ .ts_mode = HD29L2_TS_PARALLEL,
+};
+
+static int hdic_frontend_attach(struct dvb_usb_adapter *adap)
+{
+ int ret;
+ u8 sbuf[2];
+ u8 rbuf[3];
+
+ deb_info("%s:\n", __func__);
+
+ /* wake-up device */
+ sbuf[0] = HDIC_CMD_GET_FIRMWARE_VERSION;
+ ret = dvb_usb_generic_rw(adap->dev, sbuf, sizeof(sbuf), rbuf,
+ sizeof(rbuf), 0);
+ if (ret)
+ deb_info("%s: failed wake-up\n", __func__);
+
+ /* disable demod reset */
+ sbuf[0] = HDIC_CMD_DEMOD_RESET;
+ sbuf[1] = 0;
+ ret = dvb_usb_generic_rw(adap->dev, sbuf, sizeof(sbuf), rbuf,
+ sizeof(rbuf), 0);
+ if (ret)
+ deb_info("%s: failed disable demod reset\n", __func__);
+
+ /* attach demod */
+ adap->fe_adap[0].fe = dvb_attach(hd29l2_attach, &hdic_hd29l2_config,
+ &adap->dev->i2c_adap);
+ if (adap->fe_adap[0].fe == NULL) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ /* setup the reset callback */
+ adap->fe_adap[0].fe->callback = hdic_frontend_callback;
+
+ return 0;
+err:
+ deb_info("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+static struct mxl5007t_config hdic_mxl5007t_config = {
+ .xtal_freq_hz = MxL_XTAL_24_MHZ,
+ .if_freq_hz = MxL_IF_36_15_MHZ,
+ .invert_if = 1,
+};
+
+static int hdic_tuner_attach(struct dvb_usb_adapter *adap)
+{
+ int ret;
+
+ deb_info("%s:\n", __func__);
+
+ if (dvb_attach(mxl5007t_attach, adap->fe_adap[0].fe,
+ &adap->dev->i2c_adap, 0x60, &hdic_mxl5007t_config) == NULL) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ return 0;
+err:
+ deb_info("%s: failed=%d\n", __func__, ret);
+ return ret;
+}
+
+/* DVB USB Driver stuff */
+static struct dvb_usb_device_properties hdic_properties;
+
+static int hdic_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ return dvb_usb_device_init(intf, &hdic_properties, THIS_MODULE, NULL,
+ adapter_nr);
+}
+
+/*
+ * 04b4:1004 HDIC development board firmware
+ * 04b4:8613 CY7C68013 EZ-USB FX2 USB 2.0 Development Kit
+ */
+static struct usb_device_id hdic_id[] = {
+#define HDIC_8613 0 /* CY7C68013 EZ-USB FX2 USB 2.0 Development Kit */
+#define HDIC_1004 1 /* HDIC 04b4:1004 */
+#define HDIC_LINUX 2 /* HDIC Linux custom firmware */
+
+ [HDIC_8613] = {USB_DEVICE(USB_VID_CYPRESS, 0x8613)},
+ [HDIC_1004] = {USB_DEVICE(USB_VID_CYPRESS, 0x1004)},
+ [HDIC_LINUX] = {USB_DEVICE(USB_VID_CYPRESS, 0x1e04)},
+ {} /* terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, hdic_id);
+
+static struct dvb_usb_device_properties hdic_properties = {
+ .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+ .usb_ctrl = CYPRESS_FX2,
+ .firmware = "dvb-usb-hdic.fw",
+
+ .num_adapters = 1,
+ .adapter = {
+ {
+ .num_frontends = 1,
+ .fe = {
+ {
+ .streaming_ctrl = hdic_streaming_ctrl,
+ .frontend_attach = hdic_frontend_attach,
+ .tuner_attach = hdic_tuner_attach,
+
+ .stream = {
+ .type = USB_BULK,
+ .count = 5,
+ .endpoint = 0x02,
+ .u = {
+ .bulk = {
+ .buffersize =
+ (4*512),
+ }
+ }
+ },
+ }
+ },
+ }
+ },
+
+ .power_ctrl = hdic_power_ctrl,
+
+ .i2c_algo = &hdic_i2c_algo,
+
+ .generic_bulk_ctrl_endpoint = 1,
+
+ .num_device_descs = 1,
+ .devices = {
+ {
+ .name = "HDIC reference design",
+ .cold_ids = {&hdic_id[HDIC_8613],
+ &hdic_id[HDIC_1004], NULL},
+ .warm_ids = {&hdic_id[HDIC_LINUX], NULL},
+ },
+ }
+};
+
+static struct usb_driver hdic_driver = {
+ .name = "dvb_usb_hdic",
+ .probe = hdic_probe,
+ .disconnect = dvb_usb_device_exit,
+ .id_table = hdic_id,
+};
+
+/* module stuff */
+static int __init hdic_module_init(void)
+{
+ int ret;
+
+ deb_info("%s:\n", __func__);
+
+ ret = usb_register(&hdic_driver);
+ if (ret)
+ err("module init failed=%d", ret);
+
+ return ret;
+}
+
+static void __exit hdic_module_exit(void)
+{
+ deb_info("%s:\n", __func__);
+
+ /* deregister this driver from the USB subsystem */
+ usb_deregister(&hdic_driver);
+}
+
+module_init(hdic_module_init);
+module_exit(hdic_module_exit);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("HDIC DMB-TH reference design USB2.0 driver (custom firmware)");
+MODULE_LICENSE("GPL");
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff