[PATCH] dvb: Add generalized dvb-usb driver

Add generalized dvb-usb driver which supports a wide variety of devices.

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 118 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
new file mode 100644
index 000000000000..9f0a8d90d146
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
@@ -0,0 +1,118 @@
+/* dvb-usb-i2c.c is part of the DVB USB library.
+ *
+ * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
+ * see dvb-usb-init.c for copyright information.
+ *
+ * This file contains functions for (de-)initializing an I2C adapter.
+ */
+#include "dvb-usb-common.h"
+
+int dvb_usb_i2c_init(struct dvb_usb_device *d)
+{
+        int ret = 0;
+
+        if (!(d->props.caps & DVB_USB_IS_AN_I2C_ADAPTER))
+                return 0;
+
+        if (d->props.i2c_algo == NULL) {
+                err("no i2c algorithm specified");
+                return -EINVAL;
+        }
+
+        strncpy(d->i2c_adap.name,d->desc->name,I2C_NAME_SIZE);
+#ifdef I2C_ADAP_CLASS_TV_DIGITAL
+        d->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL,
+#else
+        d->i2c_adap.class = I2C_CLASS_TV_DIGITAL,
+#endif
+        d->i2c_adap.algo      = d->props.i2c_algo;
+        d->i2c_adap.algo_data = NULL;
+        d->i2c_adap.id        = I2C_ALGO_BIT;
+
+        i2c_set_adapdata(&d->i2c_adap, d);
+
+        if ((ret = i2c_add_adapter(&d->i2c_adap)) < 0)
+                err("could not add i2c adapter");
+
+        d->state |= DVB_USB_STATE_I2C;
+
+        return ret;
+}
+
+int dvb_usb_i2c_exit(struct dvb_usb_device *d)
+{
+        if (d->state & DVB_USB_STATE_I2C)
+                i2c_del_adapter(&d->i2c_adap);
+        d->state &= ~DVB_USB_STATE_I2C;
+        return 0;
+}
+
+int dvb_usb_pll_init_i2c(struct dvb_frontend *fe)
+{
+        struct dvb_usb_device *d = fe->dvb->priv;
+        struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = d->pll_init, .len = 4 };
+        int ret = 0;
+
+        /* if there is nothing to initialize */
+        if (d->pll_init[0] == 0x00 && d->pll_init[1] == 0x00 &&
+                d->pll_init[2] == 0x00 && d->pll_init[3] == 0x00)
+                return 0;
+
+        if (d->tuner_pass_ctrl)
+                d->tuner_pass_ctrl(fe,1,d->pll_addr);
+
+        deb_pll("pll init: %x\n",d->pll_addr);
+        deb_pll("pll-buf: %x %x %x %x\n",d->pll_init[0],d->pll_init[1],
+                        d->pll_init[2],d->pll_init[3]);
+
+        if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
+                err("tuner i2c write failed for pll_init.");
+                ret = -EREMOTEIO;
+        }
+        msleep(1);
+
+        if (d->tuner_pass_ctrl)
+                d->tuner_pass_ctrl(fe,0,d->pll_addr);
+        return ret;
+}
+EXPORT_SYMBOL(dvb_usb_pll_init_i2c);
+
+int dvb_usb_pll_set(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep, u8 b[5])
+{
+        struct dvb_usb_device *d = fe->dvb->priv;
+
+        deb_pll("pll addr: %x, freq: %d %p\n",d->pll_addr,fep->frequency,d->pll_desc);
+
+        b[0] = d->pll_addr << 1;
+        dvb_pll_configure(d->pll_desc,&b[1],fep->frequency,fep->u.ofdm.bandwidth);
+
+        deb_pll("pll-buf: %x %x %x %x %x\n",b[0],b[1],b[2],b[3],b[4]);
+
+        return 0;
+}
+EXPORT_SYMBOL(dvb_usb_pll_set);
+
+int dvb_usb_pll_set_i2c(struct dvb_frontend *fe, struct dvb_frontend_parameters *fep)
+{
+        struct dvb_usb_device *d = fe->dvb->priv;
+        int ret = 0;
+        u8 b[5];
+        struct i2c_msg msg = { .addr = d->pll_addr, .flags = 0, .buf = &b[1], .len = 4 };
+
+        dvb_usb_pll_set(fe,fep,b);
+
+        if (d->tuner_pass_ctrl)
+                d->tuner_pass_ctrl(fe,1,d->pll_addr);
+
+        if (i2c_transfer (&d->i2c_adap, &msg, 1) != 1) {
+                err("tuner i2c write failed for pll_set.");
+                ret = -EREMOTEIO;
+        }
+        msleep(1);
+
+        if (d->tuner_pass_ctrl)
+                d->tuner_pass_ctrl(fe,0,d->pll_addr);
+
+        return ret;
+}
+EXPORT_SYMBOL(dvb_usb_pll_set_i2c);