V4L/DVB (3404): Refactored LNBP21 and BSBE1 support
Moved duplicated code to separate files.
LNBP21 stuff rewritten from scratch, BSBE1 copied from av7110.c.
Modified budget driver to use the new routines.
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
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
new file mode 100644
index 0000000..0dcbe61
--- /dev/null
+++ b/drivers/media/dvb/frontends/lnbp21.h
@@ -0,0 +1,139 @@
+/*
+ * 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
+ */
+
+#ifndef _LNBP21_H
+#define _LNBP21_H
+
+/* system register */
+#define LNBP21_OLF 0x01
+#define LNBP21_OTF 0x02
+#define LNBP21_EN 0x04
+#define LNBP21_VSEL 0x08
+#define LNBP21_LLC 0x10
+#define LNBP21_TEN 0x20
+#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);
+};
+
+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);
+}
+
+#endif