diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tua6100.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tua6100.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/drivers/media/dvb/frontends/tua6100.c b/drivers/media/dvb/frontends/tua6100.c deleted file mode 100644 index 029384d1fddd..000000000000 --- a/drivers/media/dvb/frontends/tua6100.c +++ /dev/null @@ -1,206 +0,0 @@ -/** - * Driver for Infineon tua6100 pll. - * - * (c) 2006 Andrew de Quincey - * - * Based on code found in budget-av.c, which has the following: - * Compiled from various sources by Michael Hunold <michael@mihu.de> - * - * CI interface support (c) 2004 Olivier Gournet <ogournet@anevia.com> & - * Andrew de Quincey <adq_dvb@lidskialf.net> - * - * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de> - * - * Copyright (C) 1999-2002 Ralph Metzler - * & Marcus Metzler for convergence integrated media GmbH - * 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/slab.h> -#include <linux/module.h> -#include <linux/dvb/frontend.h> -#include <asm/types.h> - -#include "tua6100.h" - -struct tua6100_priv { - /* i2c details */ - int i2c_address; - struct i2c_adapter *i2c; - u32 frequency; -}; - -static int tua6100_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - return 0; -} - -static int tua6100_sleep(struct dvb_frontend *fe) -{ - struct tua6100_priv *priv = fe->tuner_priv; - int ret; - u8 reg0[] = { 0x00, 0x00 }; - struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = reg0, .len = 2 }; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - if ((ret = i2c_transfer (priv->i2c, &msg, 1)) != 1) { - printk("%s: i2c error\n", __func__); - } - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - return (ret == 1) ? 0 : ret; -} - -static int tua6100_set_params(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *c = &fe->dtv_property_cache; - struct tua6100_priv *priv = fe->tuner_priv; - u32 div; - u32 prediv; - u8 reg0[] = { 0x00, 0x00 }; - u8 reg1[] = { 0x01, 0x00, 0x00, 0x00 }; - u8 reg2[] = { 0x02, 0x00, 0x00 }; - struct i2c_msg msg0 = { .addr = priv->i2c_address, .flags = 0, .buf = reg0, .len = 2 }; - struct i2c_msg msg1 = { .addr = priv->i2c_address, .flags = 0, .buf = reg1, .len = 4 }; - struct i2c_msg msg2 = { .addr = priv->i2c_address, .flags = 0, .buf = reg2, .len = 3 }; - -#define _R 4 -#define _P 32 -#define _ri 4000000 - - // setup register 0 - if (c->frequency < 2000000) - reg0[1] = 0x03; - else - reg0[1] = 0x07; - - // setup register 1 - if (c->frequency < 1630000) - reg1[1] = 0x2c; - else - reg1[1] = 0x0c; - - if (_P == 64) - reg1[1] |= 0x40; - if (c->frequency >= 1525000) - reg1[1] |= 0x80; - - // register 2 - reg2[1] = (_R >> 8) & 0x03; - reg2[2] = _R; - if (c->frequency < 1455000) - reg2[1] |= 0x1c; - else if (c->frequency < 1630000) - reg2[1] |= 0x0c; - else - reg2[1] |= 0x1c; - - /* - * The N divisor ratio (note: c->frequency is in kHz, but we - * need it in Hz) - */ - prediv = (c->frequency * _R) / (_ri / 1000); - div = prediv / _P; - reg1[1] |= (div >> 9) & 0x03; - reg1[2] = div >> 1; - reg1[3] = (div << 7); - priv->frequency = ((div * _P) * (_ri / 1000)) / _R; - - // Finally, calculate and store the value for A - reg1[3] |= (prediv - (div*_P)) & 0x7f; - -#undef _R -#undef _P -#undef _ri - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - if (i2c_transfer(priv->i2c, &msg0, 1) != 1) - return -EIO; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - if (i2c_transfer(priv->i2c, &msg2, 1) != 1) - return -EIO; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - if (i2c_transfer(priv->i2c, &msg1, 1) != 1) - return -EIO; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - return 0; -} - -static int tua6100_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct tua6100_priv *priv = fe->tuner_priv; - *frequency = priv->frequency; - return 0; -} - -static struct dvb_tuner_ops tua6100_tuner_ops = { - .info = { - .name = "Infineon TUA6100", - .frequency_min = 950000, - .frequency_max = 2150000, - .frequency_step = 1000, - }, - .release = tua6100_release, - .sleep = tua6100_sleep, - .set_params = tua6100_set_params, - .get_frequency = tua6100_get_frequency, -}; - -struct dvb_frontend *tua6100_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c) -{ - struct tua6100_priv *priv = NULL; - u8 b1 [] = { 0x80 }; - u8 b2 [] = { 0x00 }; - struct i2c_msg msg [] = { { .addr = addr, .flags = 0, .buf = b1, .len = 1 }, - { .addr = addr, .flags = I2C_M_RD, .buf = b2, .len = 1 } }; - int ret; - - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 1); - ret = i2c_transfer (i2c, msg, 2); - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - if (ret != 2) - return NULL; - - priv = kzalloc(sizeof(struct tua6100_priv), GFP_KERNEL); - if (priv == NULL) - return NULL; - - priv->i2c_address = addr; - priv->i2c = i2c; - - memcpy(&fe->ops.tuner_ops, &tua6100_tuner_ops, sizeof(struct dvb_tuner_ops)); - fe->tuner_priv = priv; - return fe; -} -EXPORT_SYMBOL(tua6100_attach); - -MODULE_DESCRIPTION("DVB tua6100 driver"); -MODULE_AUTHOR("Andrew de Quincey"); -MODULE_LICENSE("GPL"); |
