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V4L/DVB (4846): Create new lgh06xf atsc tuner module
This patch creates a new atsc tuner module for the LG TDVS-H06xF ATSC tuners, called lgh06xf. The purpose of this change is to reduce some duplicated code, and to allow the lgh06xf tuner code to take advantage of dvb_attach(). As a side effect, the dependency of dvb-bt8xx on dvb-pll has been removed, since the lgh06xf module itself will use dvb-pll, while remaining optional for the dvb-bt8xx driver through the use of DVB_FE_CUSTOMISE Acked-by: Andrew de Quincey <adq_dvb@lidskialf.net> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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Michael Krufky
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Dec 10, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| /* | ||
| * lgh06xf.c - ATSC Tuner support for LG TDVS-H06xF | ||
| * | ||
| * 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 "dvb-pll.h" | ||
| #include "lgh06xf.h" | ||
|
|
||
| #define LG_H06XF_PLL_I2C_ADDR 0x61 | ||
|
|
||
| struct lgh06xf_priv { | ||
| struct i2c_adapter *i2c; | ||
| u32 frequency; | ||
| }; | ||
|
|
||
| static int lgh06xf_release(struct dvb_frontend *fe) | ||
| { | ||
| kfree(fe->tuner_priv); | ||
| fe->tuner_priv = NULL; | ||
| return 0; | ||
| } | ||
|
|
||
| static int lgh06xf_set_params(struct dvb_frontend* fe, | ||
| struct dvb_frontend_parameters* params) | ||
| { | ||
| struct lgh06xf_priv *priv = fe->tuner_priv; | ||
| u8 buf[4]; | ||
| struct i2c_msg msg = { .addr = LG_H06XF_PLL_I2C_ADDR, .flags = 0, | ||
| .buf = buf, .len = sizeof(buf) }; | ||
| u32 div; | ||
| int i; | ||
| int err; | ||
|
|
||
| dvb_pll_configure(&dvb_pll_lg_tdvs_h06xf, buf, params->frequency, 0); | ||
| if (fe->ops.i2c_gate_ctrl) | ||
| fe->ops.i2c_gate_ctrl(fe, 1); | ||
| if ((err = i2c_transfer(priv->i2c, &msg, 1)) != 1) { | ||
| printk(KERN_WARNING "lgh06xf: %s error " | ||
| "(addr %02x <- %02x, err = %i)\n", | ||
| __FUNCTION__, buf[0], buf[1], err); | ||
| if (err < 0) | ||
| return err; | ||
| else | ||
| return -EREMOTEIO; | ||
| } | ||
|
|
||
| /* Set the Auxiliary Byte. */ | ||
| buf[0] = buf[2]; | ||
| buf[0] &= ~0x20; | ||
| buf[0] |= 0x18; | ||
| buf[1] = 0x50; | ||
| msg.len = 2; | ||
| if (fe->ops.i2c_gate_ctrl) | ||
| fe->ops.i2c_gate_ctrl(fe, 1); | ||
| if ((err = i2c_transfer(priv->i2c, &msg, 1)) != 1) { | ||
| printk(KERN_WARNING "lgh06xf: %s error " | ||
| "(addr %02x <- %02x, err = %i)\n", | ||
| __FUNCTION__, buf[0], buf[1], err); | ||
| if (err < 0) | ||
| return err; | ||
| else | ||
| return -EREMOTEIO; | ||
| } | ||
|
|
||
| // calculate the frequency we set it to | ||
| for (i = 0; i < dvb_pll_lg_tdvs_h06xf.count; i++) { | ||
| if (params->frequency > dvb_pll_lg_tdvs_h06xf.entries[i].limit) | ||
| continue; | ||
| break; | ||
| } | ||
| div = (params->frequency + dvb_pll_lg_tdvs_h06xf.entries[i].offset) / | ||
| dvb_pll_lg_tdvs_h06xf.entries[i].stepsize; | ||
| priv->frequency = (div * dvb_pll_lg_tdvs_h06xf.entries[i].stepsize) - | ||
| dvb_pll_lg_tdvs_h06xf.entries[i].offset; | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| static int lgh06xf_get_frequency(struct dvb_frontend *fe, u32 *frequency) | ||
| { | ||
| struct lgh06xf_priv *priv = fe->tuner_priv; | ||
| *frequency = priv->frequency; | ||
| return 0; | ||
| } | ||
|
|
||
| static struct dvb_tuner_ops lgh06xf_tuner_ops = { | ||
| .release = lgh06xf_release, | ||
| .set_params = lgh06xf_set_params, | ||
| .get_frequency = lgh06xf_get_frequency, | ||
| }; | ||
|
|
||
| struct dvb_frontend* lgh06xf_attach(struct dvb_frontend *fe, | ||
| struct i2c_adapter *i2c) | ||
| { | ||
| struct lgh06xf_priv *priv = NULL; | ||
|
|
||
| priv = kzalloc(sizeof(struct lgh06xf_priv), GFP_KERNEL); | ||
| if (priv == NULL) | ||
| return NULL; | ||
|
|
||
| priv->i2c = i2c; | ||
|
|
||
| memcpy(&fe->ops.tuner_ops, &lgh06xf_tuner_ops, | ||
| sizeof(struct dvb_tuner_ops)); | ||
|
|
||
| strlcpy(fe->ops.tuner_ops.info.name, dvb_pll_lg_tdvs_h06xf.name, | ||
| sizeof(fe->ops.tuner_ops.info.name)); | ||
|
|
||
| fe->ops.tuner_ops.info.frequency_min = dvb_pll_lg_tdvs_h06xf.min; | ||
| fe->ops.tuner_ops.info.frequency_max = dvb_pll_lg_tdvs_h06xf.max; | ||
|
|
||
| fe->tuner_priv = priv; | ||
| return fe; | ||
| } | ||
|
|
||
| EXPORT_SYMBOL(lgh06xf_attach); | ||
|
|
||
| MODULE_DESCRIPTION("LG TDVS-H06xF ATSC Tuner support"); | ||
| MODULE_AUTHOR("Michael Krufky"); | ||
| MODULE_LICENSE("GPL"); | ||
|
|
||
| /* | ||
| * Local variables: | ||
| * c-basic-offset: 8 | ||
| * End: | ||
| */ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * lgh06xf.h - ATSC Tuner support for LG TDVS-H06xF | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| #ifndef _LGH06XF_H_ | ||
| #define _LGH06XF_H_ | ||
| #include "dvb_frontend.h" | ||
|
|
||
| #if defined(CONFIG_DVB_TUNER_LGH06XF) || (defined(CONFIG_DVB_TUNER_LGH06XF_MODULE) && defined(MODULE)) | ||
| extern struct dvb_frontend* lgh06xf_attach(struct dvb_frontend* fe, | ||
| struct i2c_adapter *i2c); | ||
| #else | ||
| static inline struct dvb_frontend* lgh06xf_attach(struct dvb_frontend* fe, | ||
| struct i2c_adapter *i2c); | ||
| { | ||
| printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__); | ||
| return NULL; | ||
| } | ||
| #endif /* CONFIG_DVB_TUNER_LGH06XF */ | ||
|
|
||
| #endif /* _LGH06XF_H_ */ |
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