diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda826x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda826x.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/drivers/media/dvb/frontends/tda826x.c b/drivers/media/dvb/frontends/tda826x.c deleted file mode 100644 index 04bbcc2..0000000 --- a/drivers/media/dvb/frontends/tda826x.c +++ /dev/null @@ -1,188 +0,0 @@ - /* - Driver for Philips tda8262/tda8263 DVBS Silicon tuners - - (c) 2006 Andrew de Quincey - - 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 "tda826x.h" - -static int debug; -#define dprintk(args...) \ - do { \ - if (debug) printk(KERN_DEBUG "tda826x: " args); \ - } while (0) - -struct tda826x_priv { - /* i2c details */ - int i2c_address; - struct i2c_adapter *i2c; - u8 has_loopthrough:1; - u32 frequency; -}; - -static int tda826x_release(struct dvb_frontend *fe) -{ - kfree(fe->tuner_priv); - fe->tuner_priv = NULL; - return 0; -} - -static int tda826x_sleep(struct dvb_frontend *fe) -{ - struct tda826x_priv *priv = fe->tuner_priv; - int ret; - u8 buf [] = { 0x00, 0x8d }; - struct i2c_msg msg = { .addr = priv->i2c_address, .flags = 0, .buf = buf, .len = 2 }; - - 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", __func__); - } - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - return (ret == 1) ? 0 : ret; -} - -static int tda826x_set_params(struct dvb_frontend *fe) -{ - struct dtv_frontend_properties *p = &fe->dtv_property_cache; - 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", __func__); - - div = (p->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 = p->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[1] |= 0x20; // power down loopthrough if not needed - buf[2] = (1<<5) | 0x0b; // 1Mhz + 0.45 VCO - buf[3] = div >> 7; - buf[4] = div << 1; - 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 - buf[10] = 0xd4; // recommended value 13 for BBIAS + unknown bit set on - - 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", __func__); - } - if (fe->ops.i2c_gate_ctrl) - fe->ops.i2c_gate_ctrl(fe, 0); - - priv->frequency = div * 1000; - - return (ret == 1) ? 0 : ret; -} - -static int tda826x_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct tda826x_priv *priv = fe->tuner_priv; - *frequency = priv->frequency; - return 0; -} - -static struct dvb_tuner_ops tda826x_tuner_ops = { - .info = { - .name = "Philips TDA826X", - .frequency_min = 950000, - .frequency_max = 2175000 - }, - .release = tda826x_release, - .sleep = tda826x_sleep, - .set_params = tda826x_set_params, - .get_frequency = tda826x_get_frequency, -}; - -struct dvb_frontend *tda826x_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c, int has_loopthrough) -{ - struct tda826x_priv *priv = NULL; - u8 b1 [] = { 0, 0 }; - struct i2c_msg msg[2] = { - { .addr = addr, .flags = 0, .buf = NULL, .len = 0 }, - { .addr = addr, .flags = I2C_M_RD, .buf = b1, .len = 2 } - }; - int ret; - - dprintk("%s:\n", __func__); - - 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; - if (!(b1[1] & 0x80)) - return NULL; - - priv = kzalloc(sizeof(struct tda826x_priv), GFP_KERNEL); - if (priv == NULL) - return NULL; - - priv->i2c_address = addr; - priv->i2c = i2c; - priv->has_loopthrough = has_loopthrough; - - memcpy(&fe->ops.tuner_ops, &tda826x_tuner_ops, sizeof(struct dvb_tuner_ops)); - - fe->tuner_priv = priv; - - return fe; -} -EXPORT_SYMBOL(tda826x_attach); - -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off)."); - -MODULE_DESCRIPTION("DVB TDA826x driver"); -MODULE_AUTHOR("Andrew de Quincey"); -MODULE_LICENSE("GPL"); |
