#include "tda826x.h"
-static int debug = 0;
+static int debug;
#define dprintk(args...) \
do { \
if (debug) printk(KERN_DEBUG "tda826x: " args); \
u8 buf [] = { 0x00, 0x8d };
struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = buf, .len = 2 };
- dprintk("%s:\n", __FUNCTION__);
+ dprintk("%s:\n", __func__);
if (!priv->has_loopthrough)
buf[1] = 0xad;
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if ((ret = i2c_transfer (priv->i2c, &msg, 1)) != 1) {
- dprintk("%s: i2c error\n", __FUNCTION__);
+ dprintk("%s: i2c error\n", __func__);
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
struct tda826x_priv *priv = fe->tuner_priv;
int ret;
u32 div;
+ u32 ksyms;
+ u32 bandwidth;
u8 buf [11];
struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = buf, .len = 11 };
- dprintk("%s:\n", __FUNCTION__);
+ dprintk("%s:\n", __func__);
div = (params->frequency + (1000-1)) / 1000;
+ /* BW = ((1 + RO) * SR/2 + 5) * 1.3 [SR in MSPS, BW in MHz] */
+ /* with R0 = 0.35 and some transformations: */
+ ksyms = params->u.qpsk.symbol_rate / 1000;
+ bandwidth = (878 * ksyms + 6500000) / 1000000 + 1;
+ if (bandwidth < 5)
+ bandwidth = 5;
+ else if (bandwidth > 36)
+ bandwidth = 36;
+
buf[0] = 0x00; // subaddress
buf[1] = 0x09; // powerdown RSSI + the magic value 1
if (!priv->has_loopthrough)
buf[2] = (1<<5) | 0x0b; // 1Mhz + 0.45 VCO
buf[3] = div >> 7;
buf[4] = div << 1;
- buf[5] = 0xff; // basedband filter to max
- buf[6] = 0xfe; // gains at max + no RF attenuation
+ buf[5] = ((bandwidth - 5) << 3) | 7; /* baseband cut-off */
+ buf[6] = 0xfe; // baseband gain 9 db + no RF attenuation
buf[7] = 0x83; // charge pumps at high, tests off
buf[8] = 0x80; // recommended value 4 for AMPVCO + disable ports.
buf[9] = 0x1a; // normal caltime + recommended values for SELTH + SELVTL
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
if ((ret = i2c_transfer (priv->i2c, &msg, 1)) != 1) {
- dprintk("%s: i2c error\n", __FUNCTION__);
+ dprintk("%s: i2c error\n", __func__);
}
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 0);
};
int ret;
- dprintk("%s:\n", __FUNCTION__);
+ dprintk("%s:\n", __func__);
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);