This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / media / dvb / dvb-usb / dvb-usb-i2c.c

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 (file)
index 0000000..9b25453
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-i2c.c
@@ -0,0 +1,119 @@
+/* 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;
+
+       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 pll_desc is not used */
+       if (d->pll_desc == NULL)
+               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;
+
+       if (d->pll_desc == NULL)
+               return 0;
+
+       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);