diff options
Diffstat (limited to 'drivers/media/dvb/frontends/mt2131.c')
| -rw-r--r-- | drivers/media/dvb/frontends/mt2131.c | 314 |
1 files changed, 0 insertions, 314 deletions
diff --git a/drivers/media/dvb/frontends/mt2131.c b/drivers/media/dvb/frontends/mt2131.c deleted file mode 100644 index e254bcf..0000000 --- a/drivers/media/dvb/frontends/mt2131.c +++ /dev/null @@ -1,314 +0,0 @@ -/* - * Driver for Microtune MT2131 "QAM/8VSB single chip tuner" - * - * Copyright (c) 2006 Steven Toth <stoth@hauppauge.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. - */ - -#include <linux/module.h> -#include <linux/delay.h> -#include <linux/dvb/frontend.h> -#include <linux/i2c.h> - -#include "dvb_frontend.h" - -#include "mt2131.h" -#include "mt2131_priv.h" - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off)."); - -#define dprintk(level,fmt, arg...) if (debug >= level) \ - printk(KERN_INFO "%s: " fmt, "mt2131", ## arg) - -static u8 mt2131_config1[] = { - 0x01, - 0x50, 0x00, 0x50, 0x80, 0x00, 0x49, 0xfa, 0x88, - 0x08, 0x77, 0x41, 0x04, 0x00, 0x00, 0x00, 0x32, - 0x7f, 0xda, 0x4c, 0x00, 0x10, 0xaa, 0x78, 0x80, - 0xff, 0x68, 0xa0, 0xff, 0xdd, 0x00, 0x00 -}; - -static u8 mt2131_config2[] = { - 0x10, - 0x7f, 0xc8, 0x0a, 0x5f, 0x00, 0x04 -}; - -static int mt2131_readreg(struct mt2131_priv *priv, u8 reg, u8 *val) -{ - struct i2c_msg msg[2] = { - { .addr = priv->cfg->i2c_address, .flags = 0, - .buf = ®, .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 "mt2131 I2C read failed\n"); - return -EREMOTEIO; - } - return 0; -} - -static int mt2131_writereg(struct mt2131_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 "mt2131 I2C write failed\n"); - return -EREMOTEIO; - } - return 0; -} - -static int mt2131_writeregs(struct mt2131_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 "mt2131 I2C write failed (len=%i)\n", - (int)len); - return -EREMOTEIO; - } - return 0; -} - -static int mt2131_set_params(struct dvb_frontend *fe, - struct dvb_frontend_parameters *params) -{ - struct mt2131_priv *priv; - int ret=0, i; - u32 freq; - u8 if_band_center; - u32 f_lo1, f_lo2; - u32 div1, num1, div2, num2; - u8 b[8]; - u8 lockval = 0; - - priv = fe->tuner_priv; - if (fe->ops.info.type == FE_OFDM) - priv->bandwidth = params->u.ofdm.bandwidth; - else - priv->bandwidth = 0; - - freq = params->frequency / 1000; // Hz -> kHz - dprintk(1, "%s() freq=%d\n", __func__, freq); - - f_lo1 = freq + MT2131_IF1 * 1000; - f_lo1 = (f_lo1 / 250) * 250; - f_lo2 = f_lo1 - freq - MT2131_IF2; - - priv->frequency = (f_lo1 - f_lo2 - MT2131_IF2) * 1000; - - /* Frequency LO1 = 16MHz * (DIV1 + NUM1/8192 ) */ - num1 = f_lo1 * 64 / (MT2131_FREF / 128); - div1 = num1 / 8192; - num1 &= 0x1fff; - - /* Frequency LO2 = 16MHz * (DIV2 + NUM2/8192 ) */ - num2 = f_lo2 * 64 / (MT2131_FREF / 128); - div2 = num2 / 8192; - num2 &= 0x1fff; - - if (freq <= 82500) if_band_center = 0x00; else - if (freq <= 137500) if_band_center = 0x01; else - if (freq <= 192500) if_band_center = 0x02; else - if (freq <= 247500) if_band_center = 0x03; else - if (freq <= 302500) if_band_center = 0x04; else - if (freq <= 357500) if_band_center = 0x05; else - if (freq <= 412500) if_band_center = 0x06; else - if (freq <= 467500) if_band_center = 0x07; else - if (freq <= 522500) if_band_center = 0x08; else - if (freq <= 577500) if_band_center = 0x09; else - if (freq <= 632500) if_band_center = 0x0A; else - if (freq <= 687500) if_band_center = 0x0B; else - if (freq <= 742500) if_band_center = 0x0C; else - if (freq <= 797500) if_band_center = 0x0D; else - if (freq <= 852500) if_band_center = 0x0E; else - if (freq <= 907500) if_band_center = 0x0F; else - if (freq <= 962500) if_band_center = 0x10; else - if (freq <= 1017500) if_band_center = 0x11; else - if (freq <= 1072500) if_band_center = 0x12; else if_band_center = 0x13; - - b[0] = 1; - b[1] = (num1 >> 5) & 0xFF; - b[2] = (num1 & 0x1F); - b[3] = div1; - b[4] = (num2 >> 5) & 0xFF; - b[5] = num2 & 0x1F; - b[6] = div2; - - dprintk(1, "IF1: %dMHz IF2: %dMHz\n", MT2131_IF1, MT2131_IF2); - dprintk(1, "PLL freq=%dkHz band=%d\n", (int)freq, (int)if_band_center); - dprintk(1, "PLL f_lo1=%dkHz f_lo2=%dkHz\n", (int)f_lo1, (int)f_lo2); - dprintk(1, "PLL div1=%d num1=%d div2=%d num2=%d\n", - (int)div1, (int)num1, (int)div2, (int)num2); - dprintk(1, "PLL [1..6]: %2x %2x %2x %2x %2x %2x\n", - (int)b[1], (int)b[2], (int)b[3], (int)b[4], (int)b[5], - (int)b[6]); - - ret = mt2131_writeregs(priv,b,7); - if (ret < 0) - return ret; - - mt2131_writereg(priv, 0x0b, if_band_center); - - /* Wait for lock */ - i = 0; - do { - mt2131_readreg(priv, 0x08, &lockval); - if ((lockval & 0x88) == 0x88) - break; - msleep(4); - i++; - } while (i < 10); - - return ret; -} - -static int mt2131_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct mt2131_priv *priv = fe->tuner_priv; - dprintk(1, "%s()\n", __func__); - *frequency = priv->frequency; - return 0; -} - -static int mt2131_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) -{ - struct mt2131_priv *priv = fe->tuner_priv; - dprintk(1, "%s()\n", __func__); - *bandwidth = priv->bandwidth; - return 0; -} - -static int mt2131_get_status(struct dvb_frontend *fe, u32 *status) -{ - struct mt2131_priv *priv = fe->tuner_priv; - u8 lock_status = 0; - u8 afc_status = 0; - - *status = 0; - - mt2131_readreg(priv, 0x08, &lock_status); - if ((lock_status & 0x88) == 0x88) - *status = TUNER_STATUS_LOCKED; - - mt2131_readreg(priv, 0x09, &afc_status); - dprintk(1, "%s() - LO Status = 0x%x, AFC Status = 0x%x\n", - __func__, lock_status, afc_status); - - return 0; -} - -static int mt2131_init(struct dvb_frontend *fe) -{ - struct mt2131_priv *priv = fe->tuner_priv; - int ret; - dprintk(1, "%s()\n", __func__); - - if ((ret = mt2131_writeregs(priv, mt2131_config1, - sizeof(mt2131_config1))) < 0) - return ret; - - mt2131_writereg(priv, 0x0b, 0x09); - mt2131_writereg(priv, 0x15, 0x47); - mt2131_writereg(priv, 0x07, 0xf2); - mt2131_writereg(priv, 0x0b, 0x01); - - if ((ret = mt2131_writeregs(priv, mt2131_config2, - sizeof(mt2131_config2))) < 0) - return ret; - - return ret; -} - -static int mt2131_release(struct dvb_frontend *fe) -{ - dprintk(1, "%s()\n", __func__); - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - return 0; -} - -static const struct dvb_tuner_ops mt2131_tuner_ops = { - .info = { - .name = "Microtune MT2131", - .frequency_min = 48000000, - .frequency_max = 860000000, - .frequency_step = 50000, - }, - - .release = mt2131_release, - .init = mt2131_init, - - .set_params = mt2131_set_params, - .get_frequency = mt2131_get_frequency, - .get_bandwidth = mt2131_get_bandwidth, - .get_status = mt2131_get_status -}; - -struct dvb_frontend * mt2131_attach(struct dvb_frontend *fe, - struct i2c_adapter *i2c, - struct mt2131_config *cfg, u16 if1) -{ - struct mt2131_priv *priv = NULL; - u8 id = 0; - - dprintk(1, "%s()\n", __func__); - - priv = kzalloc(sizeof(struct mt2131_priv), GFP_KERNEL); - if (priv == NULL) - return NULL; - - priv->cfg = cfg; - priv->bandwidth = 6000000; /* 6MHz */ - priv->i2c = i2c; - - if (mt2131_readreg(priv, 0, &id) != 0) { - kfree(priv); - return NULL; - } - if ( (id != 0x3E) && (id != 0x3F) ) { - printk(KERN_ERR "MT2131: Device not found at addr 0x%02x\n", - cfg->i2c_address); - kfree(priv); - return NULL; - } - - printk(KERN_INFO "MT2131: successfully identified at address 0x%02x\n", - cfg->i2c_address); - memcpy(&fe->ops.tuner_ops, &mt2131_tuner_ops, - sizeof(struct dvb_tuner_ops)); - - fe->tuner_priv = priv; - return fe; -} -EXPORT_SYMBOL(mt2131_attach); - -MODULE_AUTHOR("Steven Toth"); -MODULE_DESCRIPTION("Microtune MT2131 silicon tuner driver"); -MODULE_LICENSE("GPL"); - -/* - * Local variables: - * c-basic-offset: 8 - */ |