--- /dev/null
+/*
+ * ZyDAS ZD1301 driver (USB interface)
+ *
+ * Copyright (C) 2015 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.
+ */
+
+#include "dvb_usb.h"
+#include "zd1301_demod.h"
+#include "mt2060.h"
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+struct zd1301_dev {
+ #define BUF_LEN 8
+ u8 buf[BUF_LEN]; /* bulk USB control message */
+ struct zd1301_demod_platform_data demod_pdata;
+ struct mt2060_platform_data mt2060_pdata;
+ struct platform_device *platform_device_demod;
+ struct i2c_client *i2c_client_tuner;
+};
+
+static int zd1301_ctrl_msg(struct dvb_usb_device *d, const u8 *wbuf,
+ unsigned int wlen, u8 *rbuf, unsigned int rlen)
+{
+ struct zd1301_dev *dev = d_to_priv(d);
+ struct usb_interface *intf = d->intf;
+ int ret, actual_length;
+
+ mutex_lock(&d->usb_mutex);
+
+ memcpy(&dev->buf, wbuf, wlen);
+
+ dev_dbg(&intf->dev, ">>> %*ph\n", wlen, dev->buf);
+
+ ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev, 0x04), dev->buf,
+ wlen, &actual_length, 1000);
+ if (ret) {
+ dev_err(&intf->dev, "1st usb_bulk_msg() failed %d\n", ret);
+ goto err_mutex_unlock;
+ }
+
+ if (rlen) {
+ ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev, 0x83),
+ dev->buf, rlen, &actual_length, 1000);
+ if (ret) {
+ dev_err(&intf->dev,
+ "2nd usb_bulk_msg() failed %d\n", ret);
+ goto err_mutex_unlock;
+ }
+
+ dev_dbg(&intf->dev, "<<< %*ph\n", actual_length, dev->buf);
+
+ if (actual_length != rlen) {
+ /*
+ * Chip replies often with 3 byte len stub. On that case
+ * we have to query new reply.
+ */
+ dev_dbg(&intf->dev, "repeating reply message\n");
+
+ ret = usb_bulk_msg(d->udev,
+ usb_rcvbulkpipe(d->udev, 0x83),
+ dev->buf, rlen, &actual_length,
+ 1000);
+ if (ret) {
+ dev_err(&intf->dev,
+ "3rd usb_bulk_msg() failed %d\n", ret);
+ goto err_mutex_unlock;
+ }
+
+ dev_dbg(&intf->dev,
+ "<<< %*ph\n", actual_length, dev->buf);
+ }
+
+ memcpy(rbuf, dev->buf, rlen);
+ }
+
+err_mutex_unlock:
+ mutex_unlock(&d->usb_mutex);
+ return ret;
+}
+
+static int zd1301_demod_wreg(void *reg_priv, u16 reg, u8 val)
+{
+ struct dvb_usb_device *d = reg_priv;
+ struct usb_interface *intf = d->intf;
+ int ret;
+ u8 buf[7] = {0x07, 0x00, 0x03, 0x01,
+ (reg >> 0) & 0xff, (reg >> 8) & 0xff, val};
+
+ ret = zd1301_ctrl_msg(d, buf, 7, NULL, 0);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&intf->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int zd1301_demod_rreg(void *reg_priv, u16 reg, u8 *val)
+{
+ struct dvb_usb_device *d = reg_priv;
+ struct usb_interface *intf = d->intf;
+ int ret;
+ u8 buf[7] = {0x07, 0x00, 0x04, 0x01,
+ (reg >> 0) & 0xff, (reg >> 8) & 0xff, 0};
+
+ ret = zd1301_ctrl_msg(d, buf, 7, buf, 7);
+ if (ret)
+ goto err;
+
+ *val = buf[6];
+
+ return 0;
+err:
+ dev_dbg(&intf->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int zd1301_frontend_attach(struct dvb_usb_adapter *adap)
+{
+ struct dvb_usb_device *d = adap_to_d(adap);
+ struct zd1301_dev *dev = adap_to_priv(adap);
+ struct usb_interface *intf = d->intf;
+ struct platform_device *pdev;
+ struct i2c_client *client;
+ struct i2c_board_info board_info;
+ struct i2c_adapter *adapter;
+ struct dvb_frontend *frontend;
+ int ret;
+
+ dev_dbg(&intf->dev, "\n");
+
+ /* Add platform demod */
+ dev->demod_pdata.reg_priv = d;
+ dev->demod_pdata.reg_read = zd1301_demod_rreg;
+ dev->demod_pdata.reg_write = zd1301_demod_wreg;
+ request_module("%s", "zd1301_demod");
+ pdev = platform_device_register_data(&intf->dev,
+ "zd1301_demod",
+ PLATFORM_DEVID_AUTO,
+ &dev->demod_pdata,
+ sizeof(dev->demod_pdata));
+ if (IS_ERR(pdev)) {
+ ret = PTR_ERR(pdev);
+ goto err;
+ }
+ if (!pdev->dev.driver) {
+ ret = -ENODEV;
+ goto err;
+ }
+ if (!try_module_get(pdev->dev.driver->owner)) {
+ ret = -ENODEV;
+ goto err_platform_device_unregister;
+ }
+
+ adapter = zd1301_demod_get_i2c_adapter(pdev);
+ frontend = zd1301_demod_get_dvb_frontend(pdev);
+
+ /* Add I2C tuner */
+ dev->mt2060_pdata.i2c_write_max = 9;
+ dev->mt2060_pdata.dvb_frontend = frontend;
+ memset(&board_info, 0, sizeof(board_info));
+ strlcpy(board_info.type, "mt2060", I2C_NAME_SIZE);
+ board_info.addr = 0x60;
+ board_info.platform_data = &dev->mt2060_pdata;
+ request_module("%s", "mt2060");
+ client = i2c_new_device(adapter, &board_info);
+ if (!client || !client->dev.driver) {
+ ret = -ENODEV;
+ goto err_module_put_demod;
+ }
+ if (!try_module_get(client->dev.driver->owner)) {
+ ret = -ENODEV;
+ goto err_i2c_unregister_device;
+ }
+
+ dev->platform_device_demod = pdev;
+ dev->i2c_client_tuner = client;
+ adap->fe[0] = frontend;
+
+ return 0;
+err_i2c_unregister_device:
+ i2c_unregister_device(client);
+err_module_put_demod:
+ module_put(pdev->dev.driver->owner);
+err_platform_device_unregister:
+ platform_device_unregister(pdev);
+err:
+ dev_dbg(&intf->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int zd1301_frontend_detach(struct dvb_usb_adapter *adap)
+{
+ struct dvb_usb_device *d = adap_to_d(adap);
+ struct zd1301_dev *dev = d_to_priv(d);
+ struct usb_interface *intf = d->intf;
+ struct platform_device *pdev;
+ struct i2c_client *client;
+
+ dev_dbg(&intf->dev, "\n");
+
+ client = dev->i2c_client_tuner;
+ pdev = dev->platform_device_demod;
+
+ /* Remove I2C tuner */
+ if (client) {
+ module_put(client->dev.driver->owner);
+ i2c_unregister_device(client);
+ }
+
+ /* Remove platform demod */
+ if (pdev) {
+ module_put(pdev->dev.driver->owner);
+ platform_device_unregister(pdev);
+ }
+
+ return 0;
+}
+
+static int zd1301_streaming_ctrl(struct dvb_frontend *fe, int onoff)
+{
+ struct dvb_usb_device *d = fe_to_d(fe);
+ struct usb_interface *intf = d->intf;
+ int ret;
+ u8 buf[3] = {0x03, 0x00, onoff ? 0x07 : 0x08};
+
+ dev_dbg(&intf->dev, "onoff=%d\n", onoff);
+
+ ret = zd1301_ctrl_msg(d, buf, 3, NULL, 0);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&intf->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static const struct dvb_usb_device_properties zd1301_props = {
+ .driver_name = KBUILD_MODNAME,
+ .owner = THIS_MODULE,
+ .adapter_nr = adapter_nr,
+ .size_of_priv = sizeof(struct zd1301_dev),
+
+ .frontend_attach = zd1301_frontend_attach,
+ .frontend_detach = zd1301_frontend_detach,
+ .streaming_ctrl = zd1301_streaming_ctrl,
+
+ .num_adapters = 1,
+ .adapter = {
+ {
+ .stream = DVB_USB_STREAM_BULK(0x81, 6, 21 * 188),
+ },
+ },
+};
+
+static const struct usb_device_id zd1301_id_table[] = {
+ {DVB_USB_DEVICE(USB_VID_ZYDAS, 0x13a1, &zd1301_props,
+ "ZyDAS ZD1301 reference design", NULL)},
+ {}
+};
+MODULE_DEVICE_TABLE(usb, zd1301_id_table);
+
+/* Usb specific object needed to register this driver with the usb subsystem */
+static struct usb_driver zd1301_usb_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = zd1301_id_table,
+ .probe = dvb_usbv2_probe,
+ .disconnect = dvb_usbv2_disconnect,
+ .suspend = dvb_usbv2_suspend,
+ .resume = dvb_usbv2_resume,
+ .reset_resume = dvb_usbv2_reset_resume,
+ .no_dynamic_id = 1,
+ .soft_unbind = 1,
+};
+module_usb_driver(zd1301_usb_driver);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("ZyDAS ZD1301 driver");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-exynos.git / commitdiff