diff options
author | Andrew de Quincey <adq_dvb@lidskialf.net> | 2006-04-27 21:45:01 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-06-25 01:59:43 -0300 |
commit | d020542fdaaa69e3061e15d096f11fbc4aeeb93f (patch) | |
tree | 06566c4d1718ed5178109a2627ded473710814d4 /drivers/media/dvb/frontends | |
parent | 972c3517b792520a513d0ecd897ac6719e46fe0d (diff) |
V4L/DVB (3932): Convert lnbp21 to a module
Convert lnbp21.h into a linux kernel module.
Fix up previous users to use it.
Convert dvb-ttusb-budget to use it.
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/frontends')
-rw-r--r-- | drivers/media/dvb/frontends/Kconfig | 10 | ||||
-rw-r--r-- | drivers/media/dvb/frontends/Makefile | 1 | ||||
-rw-r--r-- | drivers/media/dvb/frontends/lnbp21.c | 145 | ||||
-rw-r--r-- | drivers/media/dvb/frontends/lnbp21.h | 102 |
4 files changed, 160 insertions, 98 deletions
diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig index 6d90ff3f71e..64cd63623b0 100644 --- a/drivers/media/dvb/frontends/Kconfig +++ b/drivers/media/dvb/frontends/Kconfig @@ -216,4 +216,14 @@ config DVB_LGDT330X An ATSC 8VSB and QAM64/256 tuner module. Say Y when you want to support this frontend. + +comment "Miscellaneous devices" + depends on DVB_CORE + +config DVB_LNBP21 + tristate "LNBP21 SEC controller" + depends on DVB_CORE + help + An SEC control chip. + endmenu diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile index d09b6071fba..7238e6ef2f2 100644 --- a/drivers/media/dvb/frontends/Makefile +++ b/drivers/media/dvb/frontends/Makefile @@ -31,3 +31,4 @@ obj-$(CONFIG_DVB_BCM3510) += bcm3510.o obj-$(CONFIG_DVB_S5H1420) += s5h1420.o obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o obj-$(CONFIG_DVB_CX24123) += cx24123.o +obj-$(CONFIG_DVB_LNBP21) += lnbp21.o diff --git a/drivers/media/dvb/frontends/lnbp21.c b/drivers/media/dvb/frontends/lnbp21.c new file mode 100644 index 00000000000..c9152c1fbc3 --- /dev/null +++ b/drivers/media/dvb/frontends/lnbp21.c @@ -0,0 +1,145 @@ +/* + * lnbp21.h - driver for lnb supply and control ic lnbp21 + * + * Copyright (C) 2006 Oliver Endriss + * + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * Or, point your browser to http://www.gnu.org/copyleft/gpl.html + * + * + * the project's page is at http://www.linuxtv.org + */ +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/string.h> +#include <linux/slab.h> + +#include "dvb_frontend.h" +#include "lnbp21.h" + +struct lnbp21 { + u8 config; + u8 override_or; + u8 override_and; + struct i2c_adapter *i2c; + void (*release_chain)(struct dvb_frontend* fe); +}; + +static int lnbp21_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) +{ + struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv; + struct i2c_msg msg = { .addr = 0x08, .flags = 0, + .buf = &lnbp21->config, + .len = sizeof(lnbp21->config) }; + + lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN); + + switch(voltage) { + case SEC_VOLTAGE_OFF: + break; + case SEC_VOLTAGE_13: + lnbp21->config |= LNBP21_EN; + break; + case SEC_VOLTAGE_18: + lnbp21->config |= (LNBP21_EN | LNBP21_VSEL); + break; + default: + return -EINVAL; + }; + + lnbp21->config |= lnbp21->override_or; + lnbp21->config &= lnbp21->override_and; + + return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO; +} + +static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg) +{ + struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv; + struct i2c_msg msg = { .addr = 0x08, .flags = 0, + .buf = &lnbp21->config, + .len = sizeof(lnbp21->config) }; + + if (arg) + lnbp21->config |= LNBP21_LLC; + else + lnbp21->config &= ~LNBP21_LLC; + + lnbp21->config |= lnbp21->override_or; + lnbp21->config &= lnbp21->override_and; + + return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO; +} + +static void lnbp21_release(struct dvb_frontend *fe) +{ + struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv; + + /* LNBP power off */ + lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF); + + /* free data & call next release routine */ + fe->ops->release = lnbp21->release_chain; + kfree(fe->misc_priv); + fe->misc_priv = NULL; + if (fe->ops->release) + fe->ops->release(fe); +} + +int lnbp21_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear) +{ + struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL); + if (!lnbp21) + return -ENOMEM; + + /* default configuration */ + lnbp21->config = LNBP21_ISEL; + lnbp21->i2c = i2c; + fe->misc_priv = lnbp21; + + /* bits which should be forced to '1' */ + lnbp21->override_or = override_set; + + /* bits which should be forced to '0' */ + lnbp21->override_and = ~override_clear; + + /* detect if it is present or not */ + if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) { + kfree(lnbp21); + fe->misc_priv = NULL; + return -EIO; + } + + /* install release callback */ + lnbp21->release_chain = fe->ops->release; + fe->ops->release = lnbp21_release; + + /* override frontend ops */ + fe->ops->set_voltage = lnbp21_set_voltage; + fe->ops->enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage; + + return 0; +} +EXPORT_SYMBOL(lnbp21_attach); + +MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21"); +MODULE_AUTHOR("Oliver Endriss"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/dvb/frontends/lnbp21.h b/drivers/media/dvb/frontends/lnbp21.h index 0dcbe61b61b..047a4ab68c0 100644 --- a/drivers/media/dvb/frontends/lnbp21.h +++ b/drivers/media/dvb/frontends/lnbp21.h @@ -27,7 +27,7 @@ #ifndef _LNBP21_H #define _LNBP21_H -/* system register */ +/* system register bits */ #define LNBP21_OLF 0x01 #define LNBP21_OTF 0x02 #define LNBP21_EN 0x04 @@ -37,103 +37,9 @@ #define LNBP21_ISEL 0x40 #define LNBP21_PCL 0x80 -struct lnbp21 { - u8 config; - u8 override_or; - u8 override_and; - struct i2c_adapter *i2c; - void (*release_chain)(struct dvb_frontend* fe); -}; +#include <linux/dvb/frontend.h> -static int lnbp21_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage) -{ - struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv; - struct i2c_msg msg = { .addr = 0x08, .flags = 0, - .buf = &lnbp21->config, - .len = sizeof(lnbp21->config) }; - - lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN); - - switch(voltage) { - case SEC_VOLTAGE_OFF: - break; - case SEC_VOLTAGE_13: - lnbp21->config |= LNBP21_EN; - break; - case SEC_VOLTAGE_18: - lnbp21->config |= (LNBP21_EN | LNBP21_VSEL); - break; - default: - return -EINVAL; - }; - - lnbp21->config |= lnbp21->override_or; - lnbp21->config &= lnbp21->override_and; - - return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO; -} - -static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg) -{ - struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv; - struct i2c_msg msg = { .addr = 0x08, .flags = 0, - .buf = &lnbp21->config, - .len = sizeof(lnbp21->config) }; - - if (arg) - lnbp21->config |= LNBP21_LLC; - else - lnbp21->config &= ~LNBP21_LLC; - - lnbp21->config |= lnbp21->override_or; - lnbp21->config &= lnbp21->override_and; - - return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO; -} - -static void lnbp21_exit(struct dvb_frontend *fe) -{ - struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->misc_priv; - - /* LNBP power off */ - lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF); - - /* free data & call next release routine */ - fe->ops->release = lnbp21->release_chain; - kfree(fe->misc_priv); - fe->misc_priv = NULL; - if (fe->ops->release) - fe->ops->release(fe); -} - -static int lnbp21_init(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear) -{ - struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL); - - if (!lnbp21) - return -ENOMEM; - - /* default configuration */ - lnbp21->config = LNBP21_ISEL; - - /* bits which should be forced to '1' */ - lnbp21->override_or = override_set; - - /* bits which should be forced to '0' */ - lnbp21->override_and = ~override_clear; - - /* install release callback */ - lnbp21->release_chain = fe->ops->release; - fe->ops->release = lnbp21_exit; - - /* override frontend ops */ - fe->ops->set_voltage = lnbp21_set_voltage; - fe->ops->enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage; - - lnbp21->i2c = i2c; - fe->misc_priv = lnbp21; - - return lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF); -} +/* override_set and override_clear control which system register bits (above) to always set & clear */ +extern int lnbp21_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear); #endif |