[media] dvb: Add support for pctv452e

Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

4 files changed, 216 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index 28fbb5c8c0a..4a2d2e6c91a 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -607,6 +607,16 @@ config DVB_LNBP21
 	help
 	  An SEC control chips.
 
+config DVB_LNBP22
+	tristate "LNBP22 SEC controllers"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  LNB power supply and control voltage
+	  regulator chip with step-up converter
+	  and I2C interface.
+	  Say Y when you want to support this chip.
+
 config DVB_ISL6405
 	tristate "ISL6405 SEC controller"
 	depends on DVB_CORE && I2C
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 36c8d81e096..f639f678155 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -52,6 +52,7 @@ obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o
 obj-$(CONFIG_DVB_LGDT3305) += lgdt3305.o
 obj-$(CONFIG_DVB_CX24123) += cx24123.o
 obj-$(CONFIG_DVB_LNBP21) += lnbp21.o
+obj-$(CONFIG_DVB_LNBP22) += lnbp22.o
 obj-$(CONFIG_DVB_ISL6405) += isl6405.o
 obj-$(CONFIG_DVB_ISL6421) += isl6421.o
 obj-$(CONFIG_DVB_TDA10086) += tda10086.o
diff --git a/drivers/media/dvb/frontends/lnbp22.c b/drivers/media/dvb/frontends/lnbp22.c
new file mode 100644
index 00000000000..84ad0390a4a
--- /dev/null
+++ b/drivers/media/dvb/frontends/lnbp22.c
@@ -0,0 +1,148 @@
+/*
+ * lnbp22.h - driver for lnb supply and control ic lnbp22
+ *
+ * Copyright (C) 2006 Dominik Kuhlen
+ * Based on lnbp21 driver
+ *
+ * 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 "lnbp22.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+
+#define dprintk(lvl, arg...) if (debug >= (lvl)) printk(arg)
+
+struct lnbp22 {
+	u8		    config[4];
+	struct i2c_adapter *i2c;
+};
+
+static int lnbp22_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
+{
+	struct lnbp22 *lnbp22 = (struct lnbp22 *)fe->sec_priv;
+	struct i2c_msg msg = {
+		.addr = 0x08,
+		.flags = 0,
+		.buf = (char *)&lnbp22->config,
+		.len = sizeof(lnbp22->config),
+	};
+
+	dprintk(1, "%s: %d (18V=%d 13V=%d)\n", __func__, voltage,
+	       SEC_VOLTAGE_18, SEC_VOLTAGE_13);
+
+	lnbp22->config[3] = 0x60; /* Power down */
+	switch (voltage) {
+	case SEC_VOLTAGE_OFF:
+		break;
+	case SEC_VOLTAGE_13:
+		lnbp22->config[3] |= LNBP22_EN;
+		break;
+	case SEC_VOLTAGE_18:
+		lnbp22->config[3] |= (LNBP22_EN | LNBP22_VSEL);
+		break;
+	default:
+		return -EINVAL;
+	};
+
+	dprintk(1, "%s: 0x%02x)\n", __func__, lnbp22->config[3]);
+	return (i2c_transfer(lnbp22->i2c, &msg, 1) == 1) ? 0 : -EIO;
+}
+
+static int lnbp22_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
+{
+	struct lnbp22 *lnbp22 = (struct lnbp22 *) fe->sec_priv;
+	struct i2c_msg msg = {
+		.addr = 0x08,
+		.flags = 0,
+		.buf = (char *)&lnbp22->config,
+		.len = sizeof(lnbp22->config),
+	};
+
+	dprintk(1, "%s: %d\n", __func__, (int)arg);
+	if (arg)
+		lnbp22->config[3] |= LNBP22_LLC;
+	else
+		lnbp22->config[3] &= ~LNBP22_LLC;
+
+	return (i2c_transfer(lnbp22->i2c, &msg, 1) == 1) ? 0 : -EIO;
+}
+
+static void lnbp22_release(struct dvb_frontend *fe)
+{
+	dprintk(1, "%s\n", __func__);
+	/* LNBP power off */
+	lnbp22_set_voltage(fe, SEC_VOLTAGE_OFF);
+
+	/* free data */
+	kfree(fe->sec_priv);
+	fe->sec_priv = NULL;
+}
+
+struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
+					struct i2c_adapter *i2c)
+{
+	struct lnbp22 *lnbp22 = kmalloc(sizeof(struct lnbp22), GFP_KERNEL);
+	if (!lnbp22)
+		return NULL;
+
+	/* default configuration */
+	lnbp22->config[0] = 0x00; /* ? */
+	lnbp22->config[1] = 0x28; /* ? */
+	lnbp22->config[2] = 0x48; /* ? */
+	lnbp22->config[3] = 0x60; /* Power down */
+	lnbp22->i2c = i2c;
+	fe->sec_priv = lnbp22;
+
+	/* detect if it is present or not */
+	if (lnbp22_set_voltage(fe, SEC_VOLTAGE_OFF)) {
+		dprintk(0, "%s LNBP22 not found\n", __func__);
+		kfree(lnbp22);
+		fe->sec_priv = NULL;
+		return NULL;
+	}
+
+	/* install release callback */
+	fe->ops.release_sec = lnbp22_release;
+
+	/* override frontend ops */
+	fe->ops.set_voltage = lnbp22_set_voltage;
+	fe->ops.enable_high_lnb_voltage = lnbp22_enable_high_lnb_voltage;
+
+	return fe;
+}
+EXPORT_SYMBOL(lnbp22_attach);
+
+MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp22");
+MODULE_AUTHOR("Dominik Kuhlen");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/lnbp22.h b/drivers/media/dvb/frontends/lnbp22.h
new file mode 100644
index 00000000000..63e2dec7e68
--- /dev/null
+++ b/drivers/media/dvb/frontends/lnbp22.h
@@ -0,0 +1,57 @@
+/*
+ * lnbp22.h - driver for lnb supply and control ic lnbp22
+ *
+ * Copyright (C) 2006 Dominik Kuhlen
+ * Based on lnbp21.h
+ *
+ * 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 _LNBP22_H
+#define _LNBP22_H
+
+/* Enable */
+#define LNBP22_EN	  0x10
+/* Voltage selection */
+#define LNBP22_VSEL	0x02
+/* Plus 1 Volt Bit */
+#define LNBP22_LLC	0x01
+
+#include <linux/dvb/frontend.h>
+
+#if defined(CONFIG_DVB_LNBP22) || \
+		(defined(CONFIG_DVB_LNBP22_MODULE) && defined(MODULE))
+/*
+ * override_set and override_clear control which system register bits (above)
+ * to always set & clear
+ */
+extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
+						struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
+						struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_LNBP22 */
+
+#endif /* _LNBP22_H */