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path: root/drivers/media/common/tuners/mt2266.c
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Diffstat (limited to 'drivers/media/common/tuners/mt2266.c')
-rw-r--r--drivers/media/common/tuners/mt2266.c353
1 files changed, 0 insertions, 353 deletions
diff --git a/drivers/media/common/tuners/mt2266.c b/drivers/media/common/tuners/mt2266.c
deleted file mode 100644
index bca4d75e42d4..000000000000
--- a/drivers/media/common/tuners/mt2266.c
+++ /dev/null
@@ -1,353 +0,0 @@
-/*
- * Driver for Microtune MT2266 "Direct conversion low power broadband tuner"
- *
- * Copyright (c) 2007 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.
- */
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/dvb/frontend.h>
-#include <linux/i2c.h>
-#include <linux/slab.h>
-
-#include "dvb_frontend.h"
-#include "mt2266.h"
-
-#define I2C_ADDRESS 0x60
-
-#define REG_PART_REV 0
-#define REG_TUNE 1
-#define REG_BAND 6
-#define REG_BANDWIDTH 8
-#define REG_LOCK 0x12
-
-#define PART_REV 0x85
-
-struct mt2266_priv {
- struct mt2266_config *cfg;
- struct i2c_adapter *i2c;
-
- u32 frequency;
- u32 bandwidth;
- u8 band;
-};
-
-#define MT2266_VHF 1
-#define MT2266_UHF 0
-
-/* Here, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
-
-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 "MT2266: " args); printk("\n"); }} while (0)
-
-// Reads a single register
-static int mt2266_readreg(struct mt2266_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 "MT2266 I2C read failed\n");
- return -EREMOTEIO;
- }
- return 0;
-}
-
-// Writes a single register
-static int mt2266_writereg(struct mt2266_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 "MT2266 I2C write failed\n");
- return -EREMOTEIO;
- }
- return 0;
-}
-
-// Writes a set of consecutive registers
-static int mt2266_writeregs(struct mt2266_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 "MT2266 I2C write failed (len=%i)\n",(int)len);
- return -EREMOTEIO;
- }
- return 0;
-}
-
-// Initialisation sequences
-static u8 mt2266_init1[] = { REG_TUNE, 0x00, 0x00, 0x28,
- 0x00, 0x52, 0x99, 0x3f };
-
-static u8 mt2266_init2[] = {
- 0x17, 0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a, 0xd4,
- 0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff,
- 0xff, 0x00, 0x77, 0x0f, 0x2d
-};
-
-static u8 mt2266_init_8mhz[] = { REG_BANDWIDTH, 0x22, 0x22, 0x22, 0x22,
- 0x22, 0x22, 0x22, 0x22 };
-
-static u8 mt2266_init_7mhz[] = { REG_BANDWIDTH, 0x32, 0x32, 0x32, 0x32,
- 0x32, 0x32, 0x32, 0x32 };
-
-static u8 mt2266_init_6mhz[] = { REG_BANDWIDTH, 0xa7, 0xa7, 0xa7, 0xa7,
- 0xa7, 0xa7, 0xa7, 0xa7 };
-
-static u8 mt2266_uhf[] = { 0x1d, 0xdc, 0x00, 0x0a, 0xd4, 0x03, 0x64, 0x64,
- 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14 };
-
-static u8 mt2266_vhf[] = { 0x1d, 0xfe, 0x00, 0x00, 0xb4, 0x03, 0xa5, 0xa5,
- 0xa5, 0xa5, 0x82, 0xaa, 0xf1, 0x17, 0x80, 0x1f };
-
-#define FREF 30000 // Quartz oscillator 30 MHz
-
-static int mt2266_set_params(struct dvb_frontend *fe)
-{
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct mt2266_priv *priv;
- int ret=0;
- u32 freq;
- u32 tune;
- u8 lnaband;
- u8 b[10];
- int i;
- u8 band;
-
- priv = fe->tuner_priv;
-
- freq = priv->frequency / 1000; /* Hz -> kHz */
- if (freq < 470000 && freq > 230000)
- return -EINVAL; /* Gap between VHF and UHF bands */
-
- priv->frequency = c->frequency;
- tune = 2 * freq * (8192/16) / (FREF/16);
- band = (freq < 300000) ? MT2266_VHF : MT2266_UHF;
- if (band == MT2266_VHF)
- tune *= 2;
-
- switch (c->bandwidth_hz) {
- case 6000000:
- mt2266_writeregs(priv, mt2266_init_6mhz,
- sizeof(mt2266_init_6mhz));
- break;
- case 8000000:
- mt2266_writeregs(priv, mt2266_init_8mhz,
- sizeof(mt2266_init_8mhz));
- break;
- case 7000000:
- default:
- mt2266_writeregs(priv, mt2266_init_7mhz,
- sizeof(mt2266_init_7mhz));
- break;
- }
- priv->bandwidth = c->bandwidth_hz;
-
- if (band == MT2266_VHF && priv->band == MT2266_UHF) {
- dprintk("Switch from UHF to VHF");
- mt2266_writereg(priv, 0x05, 0x04);
- mt2266_writereg(priv, 0x19, 0x61);
- mt2266_writeregs(priv, mt2266_vhf, sizeof(mt2266_vhf));
- } else if (band == MT2266_UHF && priv->band == MT2266_VHF) {
- dprintk("Switch from VHF to UHF");
- mt2266_writereg(priv, 0x05, 0x52);
- mt2266_writereg(priv, 0x19, 0x61);
- mt2266_writeregs(priv, mt2266_uhf, sizeof(mt2266_uhf));
- }
- msleep(10);
-
- if (freq <= 495000)
- lnaband = 0xEE;
- else if (freq <= 525000)
- lnaband = 0xDD;
- else if (freq <= 550000)
- lnaband = 0xCC;
- else if (freq <= 580000)
- lnaband = 0xBB;
- else if (freq <= 605000)
- lnaband = 0xAA;
- else if (freq <= 630000)
- lnaband = 0x99;
- else if (freq <= 655000)
- lnaband = 0x88;
- else if (freq <= 685000)
- lnaband = 0x77;
- else if (freq <= 710000)
- lnaband = 0x66;
- else if (freq <= 735000)
- lnaband = 0x55;
- else if (freq <= 765000)
- lnaband = 0x44;
- else if (freq <= 802000)
- lnaband = 0x33;
- else if (freq <= 840000)
- lnaband = 0x22;
- else
- lnaband = 0x11;
-
- b[0] = REG_TUNE;
- b[1] = (tune >> 8) & 0x1F;
- b[2] = tune & 0xFF;
- b[3] = tune >> 13;
- mt2266_writeregs(priv,b,4);
-
- dprintk("set_parms: tune=%d band=%d %s",
- (int) tune, (int) lnaband,
- (band == MT2266_UHF) ? "UHF" : "VHF");
- dprintk("set_parms: [1..3]: %2x %2x %2x",
- (int) b[1], (int) b[2], (int)b[3]);
-
- if (band == MT2266_UHF) {
- b[0] = 0x05;
- b[1] = (priv->band == MT2266_VHF) ? 0x52 : 0x62;
- b[2] = lnaband;
- mt2266_writeregs(priv, b, 3);
- }
-
- /* Wait for pll lock or timeout */
- i = 0;
- do {
- mt2266_readreg(priv,REG_LOCK,b);
- if (b[0] & 0x40)
- break;
- msleep(10);
- i++;
- } while (i<10);
- dprintk("Lock when i=%i",(int)i);
-
- if (band == MT2266_UHF && priv->band == MT2266_VHF)
- mt2266_writereg(priv, 0x05, 0x62);
-
- priv->band = band;
-
- return ret;
-}
-
-static void mt2266_calibrate(struct mt2266_priv *priv)
-{
- mt2266_writereg(priv, 0x11, 0x03);
- mt2266_writereg(priv, 0x11, 0x01);
- mt2266_writeregs(priv, mt2266_init1, sizeof(mt2266_init1));
- mt2266_writeregs(priv, mt2266_init2, sizeof(mt2266_init2));
- mt2266_writereg(priv, 0x33, 0x5e);
- mt2266_writereg(priv, 0x10, 0x10);
- mt2266_writereg(priv, 0x10, 0x00);
- mt2266_writeregs(priv, mt2266_init_8mhz, sizeof(mt2266_init_8mhz));
- msleep(25);
- mt2266_writereg(priv, 0x17, 0x6d);
- mt2266_writereg(priv, 0x1c, 0x00);
- msleep(75);
- mt2266_writereg(priv, 0x17, 0x6d);
- mt2266_writereg(priv, 0x1c, 0xff);
-}
-
-static int mt2266_get_frequency(struct dvb_frontend *fe, u32 *frequency)
-{
- struct mt2266_priv *priv = fe->tuner_priv;
- *frequency = priv->frequency;
- return 0;
-}
-
-static int mt2266_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
-{
- struct mt2266_priv *priv = fe->tuner_priv;
- *bandwidth = priv->bandwidth;
- return 0;
-}
-
-static int mt2266_init(struct dvb_frontend *fe)
-{
- int ret;
- struct mt2266_priv *priv = fe->tuner_priv;
- ret = mt2266_writereg(priv, 0x17, 0x6d);
- if (ret < 0)
- return ret;
- ret = mt2266_writereg(priv, 0x1c, 0xff);
- if (ret < 0)
- return ret;
- return 0;
-}
-
-static int mt2266_sleep(struct dvb_frontend *fe)
-{
- struct mt2266_priv *priv = fe->tuner_priv;
- mt2266_writereg(priv, 0x17, 0x6d);
- mt2266_writereg(priv, 0x1c, 0x00);
- return 0;
-}
-
-static int mt2266_release(struct dvb_frontend *fe)
-{
- kfree(fe->tuner_priv);
- fe->tuner_priv = NULL;
- return 0;
-}
-
-static const struct dvb_tuner_ops mt2266_tuner_ops = {
- .info = {
- .name = "Microtune MT2266",
- .frequency_min = 174000000,
- .frequency_max = 862000000,
- .frequency_step = 50000,
- },
- .release = mt2266_release,
- .init = mt2266_init,
- .sleep = mt2266_sleep,
- .set_params = mt2266_set_params,
- .get_frequency = mt2266_get_frequency,
- .get_bandwidth = mt2266_get_bandwidth
-};
-
-struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2266_config *cfg)
-{
- struct mt2266_priv *priv = NULL;
- u8 id = 0;
-
- priv = kzalloc(sizeof(struct mt2266_priv), GFP_KERNEL);
- if (priv == NULL)
- return NULL;
-
- priv->cfg = cfg;
- priv->i2c = i2c;
- priv->band = MT2266_UHF;
-
- if (mt2266_readreg(priv, 0, &id)) {
- kfree(priv);
- return NULL;
- }
- if (id != PART_REV) {
- kfree(priv);
- return NULL;
- }
- printk(KERN_INFO "MT2266: successfully identified\n");
- memcpy(&fe->ops.tuner_ops, &mt2266_tuner_ops, sizeof(struct dvb_tuner_ops));
-
- fe->tuner_priv = priv;
- mt2266_calibrate(priv);
- return fe;
-}
-EXPORT_SYMBOL(mt2266_attach);
-
-MODULE_AUTHOR("Olivier DANET");
-MODULE_DESCRIPTION("Microtune MT2266 silicon tuner driver");
-MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-28 04:28:41 +0000