From d020542fdaaa69e3061e15d096f11fbc4aeeb93f Mon Sep 17 00:00:00 2001 From: Andrew de Quincey Date: Thu, 27 Apr 2006 21:45:01 -0300 Subject: 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/lnbp21.h | 102 ++--------------------------------- 1 file changed, 4 insertions(+), 98 deletions(-) (limited to 'drivers/media/dvb/frontends/lnbp21.h') 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 -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 -- cgit v1.2.3