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-rw-r--r--drivers/media/dvb/frontends/mt2060.c369
1 files changed, 0 insertions, 369 deletions
diff --git a/drivers/media/dvb/frontends/mt2060.c b/drivers/media/dvb/frontends/mt2060.c
deleted file mode 100644
index 1305b0e63ce..00000000000
--- a/drivers/media/dvb/frontends/mt2060.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * Driver for Microtune MT2060 "Single chip dual conversion broadband tuner"
- *
- * Copyright (c) 2006 Olivier DANET <odanet@caramail.com>
- *
- * 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.=
- */
-
-/* In that file, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/dvb/frontend.h>
-#include <linux/i2c.h>
-
-#include "dvb_frontend.h"
-
-#include "mt2060.h"
-#include "mt2060_priv.h"
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
-
-#define dprintk(args...) do { if (debug) {printk(KERN_DEBUG "MT2060: " args); printk("\n"); }} while (0)
-
-// Reads a single register
-static int mt2060_readreg(struct mt2060_priv *priv, u8 reg, u8 *val)
-{
- struct i2c_msg msg[2] = {
- { .addr = priv->cfg->i2c_address, .flags = 0, .buf = &reg, .len = 1 },
- { .addr = priv->cfg->i2c_address, .flags = I2C_M_RD, .buf = val, .len = 1 },
- };
-
- if (i2c_transfer(priv->i2c, msg, 2) != 2) {
- printk(KERN_WARNING "mt2060 I2C read failed\n");
- return -EREMOTEIO;
- }
- return 0;
-}
-
-// Writes a single register
-static int mt2060_writereg(struct mt2060_priv *priv, u8 reg, u8 val)
-{
- u8 buf[2] = { reg, val };
- struct i2c_msg msg = {
- .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 2
- };
-
- if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
- printk(KERN_WARNING "mt2060 I2C write failed\n");
- return -EREMOTEIO;
- }
- return 0;
-}
-
-// Writes a set of consecutive registers
-static int mt2060_writeregs(struct mt2060_priv *priv,u8 *buf, u8 len)
-{
- struct i2c_msg msg = {
- .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = len
- };
- if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
- printk(KERN_WARNING "mt2060 I2C write failed (len=%i)\n",(int)len);
- return -EREMOTEIO;
- }
- return 0;
-}
-
-// Initialisation sequences
-// LNABAND=3, NUM1=0x3C, DIV1=0x74, NUM2=0x1080, DIV2=0x49
-static u8 mt2060_config1[] = {
- REG_LO1C1,
- 0x3F, 0x74, 0x00, 0x08, 0x93
-};
-
-// FMCG=2, GP2=0, GP1=0
-static u8 mt2060_config2[] = {
- REG_MISC_CTRL,
- 0x20, 0x1E, 0x30, 0xff, 0x80, 0xff, 0x00, 0x2c, 0x42
-};
-
-// VGAG=3, V1CSE=1
-
-#ifdef MT2060_SPURCHECK
-/* The function below calculates the frequency offset between the output frequency if2
- and the closer cross modulation subcarrier between lo1 and lo2 up to the tenth harmonic */
-static int mt2060_spurcalc(u32 lo1,u32 lo2,u32 if2)
-{
- int I,J;
- int dia,diamin,diff;
- diamin=1000000;
- for (I = 1; I < 10; I++) {
- J = ((2*I*lo1)/lo2+1)/2;
- diff = I*(int)lo1-J*(int)lo2;
- if (diff < 0) diff=-diff;
- dia = (diff-(int)if2);
- if (dia < 0) dia=-dia;
- if (diamin > dia) diamin=dia;
- }
- return diamin;
-}
-
-#define BANDWIDTH 4000 // kHz
-
-/* Calculates the frequency offset to add to avoid spurs. Returns 0 if no offset is needed */
-static int mt2060_spurcheck(u32 lo1,u32 lo2,u32 if2)
-{
- u32 Spur,Sp1,Sp2;
- int I,J;
- I=0;
- J=1000;
-
- Spur=mt2060_spurcalc(lo1,lo2,if2);
- if (Spur < BANDWIDTH) {
- /* Potential spurs detected */
- dprintk("Spurs before : f_lo1: %d f_lo2: %d (kHz)",
- (int)lo1,(int)lo2);
- I=1000;
- Sp1 = mt2060_spurcalc(lo1+I,lo2+I,if2);
- Sp2 = mt2060_spurcalc(lo1-I,lo2-I,if2);
-
- if (Sp1 < Sp2) {
- J=-J; I=-I; Spur=Sp2;
- } else
- Spur=Sp1;
-
- while (Spur < BANDWIDTH) {
- I += J;
- Spur = mt2060_spurcalc(lo1+I,lo2+I,if2);
- }
- dprintk("Spurs after : f_lo1: %d f_lo2: %d (kHz)",
- (int)(lo1+I),(int)(lo2+I));
- }
- return I;
-}
-#endif
-
-#define IF2 36150 // IF2 frequency = 36.150 MHz
-#define FREF 16000 // Quartz oscillator 16 MHz
-
-static int mt2060_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
-{
- struct mt2060_priv *priv;
- int ret=0;
- int i=0;
- u32 freq;
- u8 lnaband;
- u32 f_lo1,f_lo2;
- u32 div1,num1,div2,num2;
- u8 b[8];
- u32 if1;
-
- priv = fe->tuner_priv;
-
- if1 = priv->if1_freq;
- b[0] = REG_LO1B1;
- b[1] = 0xFF;
-
- mt2060_writeregs(priv,b,2);
-
- freq = params->frequency / 1000; // Hz -> kHz
- priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
-
- f_lo1 = freq + if1 * 1000;
- f_lo1 = (f_lo1 / 250) * 250;
- f_lo2 = f_lo1 - freq - IF2;
- // From the Comtech datasheet, the step used is 50kHz. The tuner chip could be more precise
- f_lo2 = ((f_lo2 + 25) / 50) * 50;
- priv->frequency = (f_lo1 - f_lo2 - IF2) * 1000,
-
-#ifdef MT2060_SPURCHECK
- // LO-related spurs detection and correction
- num1 = mt2060_spurcheck(f_lo1,f_lo2,IF2);
- f_lo1 += num1;
- f_lo2 += num1;
-#endif
- //Frequency LO1 = 16MHz * (DIV1 + NUM1/64 )
- num1 = f_lo1 / (FREF / 64);
- div1 = num1 / 64;
- num1 &= 0x3f;
-
- // Frequency LO2 = 16MHz * (DIV2 + NUM2/8192 )
- num2 = f_lo2 * 64 / (FREF / 128);
- div2 = num2 / 8192;
- num2 &= 0x1fff;
-
- if (freq <= 95000) lnaband = 0xB0; else
- if (freq <= 180000) lnaband = 0xA0; else
- if (freq <= 260000) lnaband = 0x90; else
- if (freq <= 335000) lnaband = 0x80; else
- if (freq <= 425000) lnaband = 0x70; else
- if (freq <= 480000) lnaband = 0x60; else
- if (freq <= 570000) lnaband = 0x50; else
- if (freq <= 645000) lnaband = 0x40; else
- if (freq <= 730000) lnaband = 0x30; else
- if (freq <= 810000) lnaband = 0x20; else lnaband = 0x10;
-
- b[0] = REG_LO1C1;
- b[1] = lnaband | ((num1 >>2) & 0x0F);
- b[2] = div1;
- b[3] = (num2 & 0x0F) | ((num1 & 3) << 4);
- b[4] = num2 >> 4;
- b[5] = ((num2 >>12) & 1) | (div2 << 1);
-
- dprintk("IF1: %dMHz",(int)if1);
- dprintk("PLL freq=%dkHz f_lo1=%dkHz f_lo2=%dkHz",(int)freq,(int)f_lo1,(int)f_lo2);
- dprintk("PLL div1=%d num1=%d div2=%d num2=%d",(int)div1,(int)num1,(int)div2,(int)num2);
- dprintk("PLL [1..5]: %2x %2x %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3],(int)b[4],(int)b[5]);
-
- mt2060_writeregs(priv,b,6);
-
- //Waits for pll lock or timeout
- i = 0;
- do {
- mt2060_readreg(priv,REG_LO_STATUS,b);
- if ((b[0] & 0x88)==0x88)
- break;
- msleep(4);
- i++;
- } while (i<10);
-
- return ret;
-}
-
-static void mt2060_calibrate(struct mt2060_priv *priv)
-{
- u8 b = 0;
- int i = 0;
-
- if (mt2060_writeregs(priv,mt2060_config1,sizeof(mt2060_config1)))
- return;
- if (mt2060_writeregs(priv,mt2060_config2,sizeof(mt2060_config2)))
- return;
-
- /* initialize the clock output */
- mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x30);
-
- do {
- b |= (1 << 6); // FM1SS;
- mt2060_writereg(priv, REG_LO2C1,b);
- msleep(20);
-
- if (i == 0) {
- b |= (1 << 7); // FM1CA;
- mt2060_writereg(priv, REG_LO2C1,b);
- b &= ~(1 << 7); // FM1CA;
- msleep(20);
- }
-
- b &= ~(1 << 6); // FM1SS
- mt2060_writereg(priv, REG_LO2C1,b);
-
- msleep(20);
- i++;
- } while (i < 9);
-
- i = 0;
- while (i++ < 10 && mt2060_readreg(priv, REG_MISC_STAT, &b) == 0 && (b & (1 << 6)) == 0)
- msleep(20);
-
- if (i < 10) {
- mt2060_readreg(priv, REG_FM_FREQ, &priv->fmfreq); // now find out, what is fmreq used for :)
- dprintk("calibration was successful: %d", (int)priv->fmfreq);
- } else
- dprintk("FMCAL timed out");
-}
-
-static int mt2060_get_frequency(struct dvb_frontend *fe, u32 *frequency)
-{
- struct mt2060_priv *priv = fe->tuner_priv;
- *frequency = priv->frequency;
- return 0;
-}
-
-static int mt2060_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
-{
- struct mt2060_priv *priv = fe->tuner_priv;
- *bandwidth = priv->bandwidth;
- return 0;
-}
-
-static int mt2060_init(struct dvb_frontend *fe)
-{
- struct mt2060_priv *priv = fe->tuner_priv;
- return mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x33);
-}
-
-static int mt2060_sleep(struct dvb_frontend *fe)
-{
- struct mt2060_priv *priv = fe->tuner_priv;
- return mt2060_writereg(priv, REG_VGAG, (priv->cfg->clock_out << 6) | 0x30);
-}
-
-static int mt2060_release(struct dvb_frontend *fe)
-{
- kfree(fe->tuner_priv);
- fe->tuner_priv = NULL;
- return 0;
-}
-
-static const struct dvb_tuner_ops mt2060_tuner_ops = {
- .info = {
- .name = "Microtune MT2060",
- .frequency_min = 48000000,
- .frequency_max = 860000000,
- .frequency_step = 50000,
- },
-
- .release = mt2060_release,
-
- .init = mt2060_init,
- .sleep = mt2060_sleep,
-
- .set_params = mt2060_set_params,
- .get_frequency = mt2060_get_frequency,
- .get_bandwidth = mt2060_get_bandwidth
-};
-
-/* This functions tries to identify a MT2060 tuner by reading the PART/REV register. This is hasty. */
-struct dvb_frontend * mt2060_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2060_config *cfg, u16 if1)
-{
- struct mt2060_priv *priv = NULL;
- u8 id = 0;
-
- priv = kzalloc(sizeof(struct mt2060_priv), GFP_KERNEL);
- if (priv == NULL)
- return NULL;
-
- priv->cfg = cfg;
- priv->i2c = i2c;
- priv->if1_freq = if1;
-
- if (mt2060_readreg(priv,REG_PART_REV,&id) != 0) {
- kfree(priv);
- return NULL;
- }
-
- if (id != PART_REV) {
- kfree(priv);
- return NULL;
- }
- printk(KERN_INFO "MT2060: successfully identified (IF1 = %d)\n", if1);
- memcpy(&fe->ops.tuner_ops, &mt2060_tuner_ops, sizeof(struct dvb_tuner_ops));
-
- fe->tuner_priv = priv;
-
- mt2060_calibrate(priv);
-
- return fe;
-}
-EXPORT_SYMBOL(mt2060_attach);
-
-MODULE_AUTHOR("Olivier DANET");
-MODULE_DESCRIPTION("Microtune MT2060 silicon tuner driver");
-MODULE_LICENSE("GPL");