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>
diff --git a/drivers/media/dvb/frontends/lnbp21.h b/drivers/media/dvb/frontends/lnbp21.h
index 0dcbe61..047a4ab 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