V4L/DVB (10800): Add support for ST LNBH24 LNB power controller.

The controller consist of two independent parts.
Every part is similar to LNBP21, but has configurable i2c address.
It is used in NetUP Dual DVB-S2 CI card.
http://linuxtv.org/wiki/index.php/NetUP_Dual_DVB_S2_CI

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

4 files changed, 126 insertions, 24 deletions

diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index 649ac75aaefa..d3cfced2ce23 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -453,11 +453,11 @@ comment "SEC control devices for DVB-S"
 	depends on DVB_CORE
 
 config DVB_LNBP21
-	tristate "LNBP21 SEC controller"
+	tristate "LNBP21/LNBH24 SEC controllers"
 	depends on DVB_CORE && I2C
 	default m if DVB_FE_CUSTOMISE
 	help
-	  An SEC control chip.
+	  An SEC control chips.
 
 config DVB_ISL6405
 	tristate "ISL6405 SEC controller"
diff --git a/drivers/media/dvb/frontends/lnbh24.h b/drivers/media/dvb/frontends/lnbh24.h
new file mode 100644
index 000000000000..c059b165318f
--- /dev/null
+++ b/drivers/media/dvb/frontends/lnbh24.h
@@ -0,0 +1,55 @@
+/*
+ * lnbh24.h - driver for lnb supply and control ic lnbh24
+ *
+ * Copyright (C) 2009 NetUP Inc.
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _LNBH24_H
+#define _LNBH24_H
+
+/* system register bits */
+#define LNBH24_OLF	0x01
+#define LNBH24_OTF	0x02
+#define LNBH24_EN	0x04
+#define LNBH24_VSEL	0x08
+#define LNBH24_LLC	0x10
+#define LNBH24_TEN	0x20
+#define LNBH24_TTX	0x40
+#define LNBH24_PCL	0x80
+
+#include <linux/dvb/frontend.h>
+
+#if defined(CONFIG_DVB_LNBP21) || (defined(CONFIG_DVB_LNBP21_MODULE) \
+							&& defined(MODULE))
+/* override_set and override_clear control which
+   system register bits (above) to always set & clear */
+extern struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear, u8 i2c_addr);
+#else
+static inline struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear, u8 i2c_addr)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
+
+#endif
diff --git a/drivers/media/dvb/frontends/lnbp21.c b/drivers/media/dvb/frontends/lnbp21.c
index 76f935d9755a..772a0bbb0dd8 100644
--- a/drivers/media/dvb/frontends/lnbp21.c
+++ b/drivers/media/dvb/frontends/lnbp21.c
@@ -1,7 +1,8 @@
 /*
- * lnbp21.h - driver for lnb supply and control ic lnbp21
+ * lnbp21.c - driver for lnb supply and control ic lnbp21
  *
  * Copyright (C) 2006 Oliver Endriss
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -33,18 +34,21 @@
 
 #include "dvb_frontend.h"
 #include "lnbp21.h"
+#include "lnbh24.h"
 
 struct lnbp21 {
 	u8			config;
 	u8			override_or;
 	u8			override_and;
 	struct i2c_adapter	*i2c;
+	u8			i2c_addr;
 };
 
-static int lnbp21_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
+static int lnbp21_set_voltage(struct dvb_frontend *fe,
+					fe_sec_voltage_t voltage)
 {
 	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
-	struct i2c_msg msg = {	.addr = 0x08, .flags = 0,
+	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
 				.buf = &lnbp21->config,
 				.len = sizeof(lnbp21->config) };
 
@@ -72,7 +76,7 @@ static int lnbp21_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t voltage)
 static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
 {
 	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
-	struct i2c_msg msg = {	.addr = 0x08, .flags = 0,
+	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
 				.buf = &lnbp21->config,
 				.len = sizeof(lnbp21->config) };
 
@@ -97,15 +101,18 @@ static void lnbp21_release(struct dvb_frontend *fe)
 	fe->sec_priv = NULL;
 }
 
-struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear)
+static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear, u8 i2c_addr, u8 config)
 {
 	struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
 	if (!lnbp21)
 		return NULL;
 
 	/* default configuration */
-	lnbp21->config = LNBP21_ISEL;
+	lnbp21->config = config;
 	lnbp21->i2c = i2c;
+	lnbp21->i2c_addr = i2c_addr;
 	fe->sec_priv = lnbp21;
 
 	/* bits which should be forced to '1' */
@@ -126,11 +133,29 @@ struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe, struct i2c_adapter *
 	/* override frontend ops */
 	fe->ops.set_voltage = lnbp21_set_voltage;
 	fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
+	printk(KERN_INFO "LNBx2x attached on addr=%x", lnbp21->i2c_addr);
 
 	return fe;
 }
+
+struct dvb_frontend *lnbp24_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear, u8 i2c_addr)
+{
+	return lnbx2x_attach(fe, i2c, override_set, override_clear,
+							i2c_addr, LNBH24_TTX);
+}
+EXPORT_SYMBOL(lnbh24_attach);
+
+struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear)
+{
+	return lnbx2x_attach(fe, i2c, override_set, override_clear,
+							0x08, LNBP21_ISEL);
+}
 EXPORT_SYMBOL(lnbp21_attach);
 
-MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21");
-MODULE_AUTHOR("Oliver Endriss");
+MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
+MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
 MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/lnbp21.h b/drivers/media/dvb/frontends/lnbp21.h
index b8745887492c..fcdf1c650dde 100644
--- a/drivers/media/dvb/frontends/lnbp21.h
+++ b/drivers/media/dvb/frontends/lnbp21.h
@@ -28,26 +28,48 @@
 #define _LNBP21_H
 
 /* system register bits */
-#define LNBP21_OLF     0x01 /* [R-only] 0=OK; 1=over current limit flag*/
-#define LNBP21_OTF     0x02 /* [R-only] 0=OK; 1=over temperature flag (150degC typ) */
-#define LNBP21_EN      0x04 /* [RW] 0=disable LNB power, enable loopthrough; 1=enable LNB power, disable loopthrough*/
-#define LNBP21_VSEL    0x08 /* [RW] 0=low voltage (13/14V, vert pol); 1=high voltage (18/19V,horiz pol) */
-#define LNBP21_LLC     0x10 /* [RW] increase LNB voltage by 1V:  0=13/18V; 1=14/19V */
-#define LNBP21_TEN     0x20 /* [RW] 0=tone controlled by DSQIN pin; 1=tone enable, disable DSQIN */
-#define LNBP21_ISEL    0x40 /* [RW] current limit select 0:Iout=500-650mA,Isc=300mA ; 1:Iout=400-550mA,Isc=200mA*/
-#define LNBP21_PCL     0x80 /* [RW] short-circuit prot: 0=pulsed (dynamic) curr limiting; 1=static curr limiting*/
+/* [RO] 0=OK; 1=over current limit flag */
+#define LNBP21_OLF	0x01
+/* [RO] 0=OK; 1=over temperature flag (150 C) */
+#define LNBP21_OTF	0x02
+/* [RW] 0=disable LNB power, enable loopthrough
+	1=enable LNB power, disable loopthrough */
+#define LNBP21_EN	0x04
+/* [RW] 0=low voltage (13/14V, vert pol)
+	1=high voltage (18/19V,horiz pol) */
+#define LNBP21_VSEL	0x08
+/* [RW] increase LNB voltage by 1V:
+	0=13/18V; 1=14/19V */
+#define LNBP21_LLC	0x10
+/* [RW] 0=tone controlled by DSQIN pin
+	1=tone enable, disable DSQIN */
+#define LNBP21_TEN	0x20
+/* [RW] current limit select:
+	0:Iout=500-650mA Isc=300mA
+	1:Iout=400-550mA Isc=200mA */
+#define LNBP21_ISEL	0x40
+/* [RW] short-circuit protect:
+	0=pulsed (dynamic) curr limiting
+	1=static curr limiting */
+#define LNBP21_PCL	0x80
 
 #include <linux/dvb/frontend.h>
 
-#if defined(CONFIG_DVB_LNBP21) || (defined(CONFIG_DVB_LNBP21_MODULE) && defined(MODULE))
-/* override_set and override_clear control which system register bits (above) to always set & clear */
-extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear);
+#if defined(CONFIG_DVB_LNBP21) || (defined(CONFIG_DVB_LNBP21_MODULE) \
+							&& defined(MODULE))
+/* override_set and override_clear control which
+ system register bits (above) to always set & clear */
+extern struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear);
 #else
-static inline struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 override_set, u8 override_clear)
+static inline struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
+				struct i2c_adapter *i2c, u8 override_set,
+				u8 override_clear)
 {
 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 	return NULL;
 }
-#endif // CONFIG_DVB_LNBP21
+#endif
 
-#endif // _LNBP21_H
+#endif