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");