* [PATCH 3/5] [media] lnbh25: LNBH25 SEC controller driver
@ 2015-02-02 9:22 Kozlov Sergey
2015-03-05 10:59 ` Mauro Carvalho Chehab
0 siblings, 1 reply; 2+ messages in thread
From: Kozlov Sergey @ 2015-02-02 9:22 UTC (permalink / raw)
To: linux-media; +Cc: mchehab, aospan1
DVB SEC frontend driver for STM LNBH25PQR chip.
Signed-off-by: Kozlov Sergey <serjk@netup.ru>
---
MAINTAINERS | 9 ++
drivers/media/dvb-frontends/Kconfig | 8 ++
drivers/media/dvb-frontends/Makefile | 1 +
drivers/media/dvb-frontends/lnbh25.c | 182 ++++++++++++++++++++++++++++++++++
drivers/media/dvb-frontends/lnbh25.h | 56 +++++++++++
5 files changed, 256 insertions(+)
create mode 100644 drivers/media/dvb-frontends/lnbh25.c
create mode 100644 drivers/media/dvb-frontends/lnbh25.h
diff --git a/MAINTAINERS b/MAINTAINERS
index a022d6d..8a687dc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5853,6 +5853,15 @@ Q: http://patchwork.linuxtv.org/project/linux-media/list/
S: Maintained
F: drivers/media/usb/dvb-usb-v2/lmedm04*
+LNBH25 MEDIA DRIVER
+M: Sergey Kozlov <serjk@netup.ru>
+L: linux-media@vger.kernel.org
+W: http://linuxtv.org/
+W: http://netup.tv/
+T: git git://linuxtv.org/media_tree.git
+S: Supported
+F: drivers/media/dvb-frontends/lnbh25*
+
LOCKDEP AND LOCKSTAT
M: Peter Zijlstra <peterz@infradead.org>
M: Ingo Molnar <mingo@redhat.com>
diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig
index c94bb7b..b3b216d 100644
--- a/drivers/media/dvb-frontends/Kconfig
+++ b/drivers/media/dvb-frontends/Kconfig
@@ -693,6 +693,14 @@ comment "SEC control devices for DVB-S"
source "drivers/media/dvb-frontends/drx39xyj/Kconfig"
+config DVB_LNBH25
+ tristate "LNBH25 SEC controller"
+ depends on DVB_CORE && I2C
+ default m if !MEDIA_SUBDRV_AUTOSELECT
+ help
+ An SEC control chip.
+ Say Y when you want to support this chip.
+
config DVB_LNBP21
tristate "LNBP21/LNBH24 SEC controllers"
depends on DVB_CORE && I2C
diff --git a/drivers/media/dvb-frontends/Makefile b/drivers/media/dvb-frontends/Makefile
index 0b19c10..06a0d21 100644
--- a/drivers/media/dvb-frontends/Makefile
+++ b/drivers/media/dvb-frontends/Makefile
@@ -56,6 +56,7 @@ obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o
obj-$(CONFIG_DVB_LGDT3305) += lgdt3305.o
obj-$(CONFIG_DVB_LG2160) += lg2160.o
obj-$(CONFIG_DVB_CX24123) += cx24123.o
+obj-$(CONFIG_DVB_LNBH25) += lnbh25.o
obj-$(CONFIG_DVB_LNBP21) += lnbp21.o
obj-$(CONFIG_DVB_LNBP22) += lnbp22.o
obj-$(CONFIG_DVB_ISL6405) += isl6405.o
diff --git a/drivers/media/dvb-frontends/lnbh25.c b/drivers/media/dvb-frontends/lnbh25.c
new file mode 100644
index 0000000..fcefc66
--- /dev/null
+++ b/drivers/media/dvb-frontends/lnbh25.c
@@ -0,0 +1,182 @@
+/*
+ * lnbh25.c
+ *
+ * Driver for LNB supply and control IC LNBH25
+ *
+ * Copyright (C) 2014 NetUP Inc.
+ * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
+ * Copyright (C) 2014 Abylay Ospan <aospan@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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include "dvb_frontend.h"
+#include "lnbh25.h"
+
+static int debug;
+
+#define dprintk(args...) \
+ do { \
+ if (debug) \
+ dev_dbg(&priv->i2c->dev, args); \
+ } while (0)
+
+struct lnbh25_priv {
+ struct i2c_adapter *i2c;
+ u8 i2c_address;
+ /*
+ * LNBH25 configuration:
+ * offset 0: first LNBH25 register address: always 0x02 (DATA1)
+ * offset 1: DATA1 register value
+ * offset 2: DATA2 register value
+ */
+ u8 config[3];
+};
+
+#define LNBH25_STATUS_OFL 0x1
+#define LNBH25_STATUS_VMON 0x4
+#define LNBH25_VSEL_13 0x03
+#define LNBH25_VSEL_18 0x0a
+
+static void lnbh25_read_vmon(struct lnbh25_priv *priv)
+{
+ int i;
+ u8 addr = 0x00;
+ u8 status[6];
+ struct i2c_msg msg[2] = {
+ {
+ .addr = priv->i2c_address,
+ .flags = 0,
+ .len = 1,
+ .buf = &addr
+ }, {
+ .addr = priv->i2c_address,
+ .flags = I2C_M_RD,
+ .len = sizeof(status),
+ .buf = status
+ }
+ };
+
+ msleep(100);
+ for (i = 0; i < 2; i++) {
+ if (i2c_transfer(priv->i2c, &msg[i], 1) != 1) {
+ dprintk("%s(): I2C transfer %d failed\n",
+ __func__, i);
+ return;
+ }
+ }
+ for (i = 0; i < sizeof(status); i++)
+ dprintk("%s(): reg %d value 0x%x\n",
+ __func__, i, (int)status[i]);
+ if ((status[0] & (LNBH25_STATUS_OFL | LNBH25_STATUS_VMON)) != 0)
+ dev_err(&priv->i2c->dev,
+ "%s(): voltage in failure state, status reg 0x%x\n",
+ __func__, status[0]);
+}
+
+static int lnbh25_set_voltage(struct dvb_frontend *fe,
+ fe_sec_voltage_t voltage)
+{
+ u8 data1_reg;
+ const char *vsel;
+ struct lnbh25_priv *priv = fe->sec_priv;
+ struct i2c_msg msg = {
+ .addr = priv->i2c_address,
+ .flags = 0,
+ .len = sizeof(priv->config),
+ .buf = priv->config
+ };
+
+ switch (voltage) {
+ case SEC_VOLTAGE_OFF:
+ data1_reg = 0x00;
+ vsel = "Off";
+ break;
+ case SEC_VOLTAGE_13:
+ data1_reg = LNBH25_VSEL_13;
+ vsel = "13V";
+ break;
+ case SEC_VOLTAGE_18:
+ data1_reg = LNBH25_VSEL_18;
+ vsel = "18V";
+ break;
+ default:
+ return -EINVAL;
+ }
+ priv->config[1] = data1_reg;
+ dprintk("%s(): %s, I2C 0x%x write [ %02x %02x %02x ]\n",
+ __func__, vsel, priv->i2c_address,
+ priv->config[0], priv->config[1], priv->config[2]);
+ if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+ dev_err(&priv->i2c->dev,
+ "%s(): I2C transfer error\n", __func__);
+ return -EIO;
+ }
+ msleep(20);
+ if (voltage != SEC_VOLTAGE_OFF)
+ lnbh25_read_vmon(priv);
+ return 0;
+}
+
+static void lnbh25_release(struct dvb_frontend *fe)
+{
+ struct lnbh25_priv *priv = fe->sec_priv;
+
+ dprintk("%s()\n", __func__);
+ lnbh25_set_voltage(fe, SEC_VOLTAGE_OFF);
+ kfree(fe->sec_priv);
+ fe->sec_priv = NULL;
+}
+
+struct dvb_frontend *lnbh25_attach(
+ struct dvb_frontend *fe,
+ struct lnbh25_config *cfg,
+ struct i2c_adapter *i2c)
+{
+ struct lnbh25_priv *priv;
+
+ dprintk("%s()\n", __func__);
+ priv = kzalloc(sizeof(struct lnbh25_priv), GFP_KERNEL);
+ if (!priv)
+ return NULL;
+ priv->i2c_address = (cfg->i2c_address >> 1);
+ priv->i2c = i2c;
+ priv->config[0] = 0x02;
+ priv->config[1] = 0x00;
+ priv->config[2] = cfg->data2_config;
+ fe->sec_priv = priv;
+ if (lnbh25_set_voltage(fe, SEC_VOLTAGE_OFF)) {
+ dev_err(&i2c->dev, "%s(): no LNBH25 found at I2C addr 0x%02x\n",
+ __func__, priv->i2c_address);
+ kfree(priv);
+ fe->sec_priv = NULL;
+ return NULL;
+ }
+
+ fe->ops.release_sec = lnbh25_release;
+ fe->ops.set_voltage = lnbh25_set_voltage;
+
+ dev_err(&i2c->dev, "%s(): attached at I2C addr 0x%02x\n",
+ __func__, priv->i2c_address);
+ return fe;
+}
+EXPORT_SYMBOL(lnbh25_attach);
+
+module_param(debug, int, 0644);
+MODULE_DESCRIPTION("ST LNBH25 driver");
+MODULE_AUTHOR("info@netup.ru");
+MODULE_LICENSE("GPL");
+
diff --git a/drivers/media/dvb-frontends/lnbh25.h b/drivers/media/dvb-frontends/lnbh25.h
new file mode 100644
index 0000000..7fc5123
--- /dev/null
+++ b/drivers/media/dvb-frontends/lnbh25.h
@@ -0,0 +1,56 @@
+/*
+ * lnbh25.c
+ *
+ * Driver for LNB supply and control IC LNBH25
+ *
+ * Copyright (C) 2014 NetUP Inc.
+ * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
+ * Copyright (C) 2014 Abylay Ospan <aospan@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.
+ */
+
+#ifndef LNBH25_H
+#define LNBH25_H
+
+#include <linux/i2c.h>
+#include <linux/kconfig.h>
+#include <linux/dvb/frontend.h>
+
+/* 22 kHz tone enabled. Tone output controlled by DSQIN pin */
+#define LNBH25_TEN 0x01
+/* Low power mode activated (used only with 22 kHz tone output disabled) */
+#define LNBH25_LPM 0x02
+/* DSQIN input pin is set to receive external 22 kHz TTL signal source */
+#define LNBH25_EXTM 0x04
+
+struct lnbh25_config {
+ u8 i2c_address;
+ u8 data2_config;
+};
+
+#if IS_ENABLED(CONFIG_DVB_LNBH25)
+struct dvb_frontend *lnbh25_attach(
+ struct dvb_frontend *fe,
+ struct lnbh25_config *cfg,
+ struct i2c_adapter *i2c);
+#else
+static inline dvb_frontend *lnbh25_attach(
+ struct dvb_frontend *fe,
+ struct lnbh25_config *cfg,
+ struct i2c_adapter *i2c)
+{
+ printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+#endif
+
+#endif
--
1.7.10.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH 3/5] [media] lnbh25: LNBH25 SEC controller driver
2015-02-02 9:22 [PATCH 3/5] [media] lnbh25: LNBH25 SEC controller driver Kozlov Sergey
@ 2015-03-05 10:59 ` Mauro Carvalho Chehab
0 siblings, 0 replies; 2+ messages in thread
From: Mauro Carvalho Chehab @ 2015-03-05 10:59 UTC (permalink / raw)
To: Kozlov Sergey; +Cc: linux-media, aospan1
Em Mon, 02 Feb 2015 12:22:32 +0300
Kozlov Sergey <serjk@netup.ru> escreveu:
>
> DVB SEC frontend driver for STM LNBH25PQR chip.
>
> Signed-off-by: Kozlov Sergey <serjk@netup.ru>
> ---
> MAINTAINERS | 9 ++
> drivers/media/dvb-frontends/Kconfig | 8 ++
> drivers/media/dvb-frontends/Makefile | 1 +
> drivers/media/dvb-frontends/lnbh25.c | 182 ++++++++++++++++++++++++++++++++++
> drivers/media/dvb-frontends/lnbh25.h | 56 +++++++++++
> 5 files changed, 256 insertions(+)
> create mode 100644 drivers/media/dvb-frontends/lnbh25.c
> create mode 100644 drivers/media/dvb-frontends/lnbh25.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index a022d6d..8a687dc 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -5853,6 +5853,15 @@ Q: http://patchwork.linuxtv.org/project/linux-media/list/
> S: Maintained
> F: drivers/media/usb/dvb-usb-v2/lmedm04*
>
> +LNBH25 MEDIA DRIVER
Same note here with regards to the name:
MEDIA DRIVERS FOR LNBH25
> +M: Sergey Kozlov <serjk@netup.ru>
> +L: linux-media@vger.kernel.org
> +W: http://linuxtv.org/
> +W: http://netup.tv/
> +T: git git://linuxtv.org/media_tree.git
> +S: Supported
> +F: drivers/media/dvb-frontends/lnbh25*
> +
> LOCKDEP AND LOCKSTAT
> M: Peter Zijlstra <peterz@infradead.org>
> M: Ingo Molnar <mingo@redhat.com>
> diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig
> index c94bb7b..b3b216d 100644
> --- a/drivers/media/dvb-frontends/Kconfig
> +++ b/drivers/media/dvb-frontends/Kconfig
> @@ -693,6 +693,14 @@ comment "SEC control devices for DVB-S"
>
> source "drivers/media/dvb-frontends/drx39xyj/Kconfig"
>
> +config DVB_LNBH25
> + tristate "LNBH25 SEC controller"
> + depends on DVB_CORE && I2C
> + default m if !MEDIA_SUBDRV_AUTOSELECT
> + help
> + An SEC control chip.
> + Say Y when you want to support this chip.
> +
> config DVB_LNBP21
> tristate "LNBP21/LNBH24 SEC controllers"
> depends on DVB_CORE && I2C
> diff --git a/drivers/media/dvb-frontends/Makefile b/drivers/media/dvb-frontends/Makefile
> index 0b19c10..06a0d21 100644
> --- a/drivers/media/dvb-frontends/Makefile
> +++ b/drivers/media/dvb-frontends/Makefile
> @@ -56,6 +56,7 @@ obj-$(CONFIG_DVB_LGDT330X) += lgdt330x.o
> obj-$(CONFIG_DVB_LGDT3305) += lgdt3305.o
> obj-$(CONFIG_DVB_LG2160) += lg2160.o
> obj-$(CONFIG_DVB_CX24123) += cx24123.o
> +obj-$(CONFIG_DVB_LNBH25) += lnbh25.o
> obj-$(CONFIG_DVB_LNBP21) += lnbp21.o
> obj-$(CONFIG_DVB_LNBP22) += lnbp22.o
> obj-$(CONFIG_DVB_ISL6405) += isl6405.o
> diff --git a/drivers/media/dvb-frontends/lnbh25.c b/drivers/media/dvb-frontends/lnbh25.c
> new file mode 100644
> index 0000000..fcefc66
> --- /dev/null
> +++ b/drivers/media/dvb-frontends/lnbh25.c
> @@ -0,0 +1,182 @@
> +/*
> + * lnbh25.c
> + *
> + * Driver for LNB supply and control IC LNBH25
> + *
> + * Copyright (C) 2014 NetUP Inc.
> + * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
> + * Copyright (C) 2014 Abylay Ospan <aospan@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.
> + */
> +
> +#include <linux/module.h>
> +#include <linux/init.h>
> +#include <linux/string.h>
> +#include <linux/slab.h>
> +
> +#include "dvb_frontend.h"
> +#include "lnbh25.h"
> +
> +static int debug;
> +
> +#define dprintk(args...) \
> + do { \
> + if (debug) \
> + dev_dbg(&priv->i2c->dev, args); \
> + } while (0)
This is not very nice, as, in order to enable debug, both this parameter
and dynamic printk should be enabled via /sys/kernel/debug/dynamic_debug.
Just use dev_dbg() directly.
> +
> +struct lnbh25_priv {
> + struct i2c_adapter *i2c;
> + u8 i2c_address;
> + /*
> + * LNBH25 configuration:
> + * offset 0: first LNBH25 register address: always 0x02 (DATA1)
> + * offset 1: DATA1 register value
> + * offset 2: DATA2 register value
> + */
> + u8 config[3];
> +};
Please use Documentation/kernel-doc-nano-HOWTO.txt format.
> +
> +#define LNBH25_STATUS_OFL 0x1
> +#define LNBH25_STATUS_VMON 0x4
> +#define LNBH25_VSEL_13 0x03
> +#define LNBH25_VSEL_18 0x0a
> +
> +static void lnbh25_read_vmon(struct lnbh25_priv *priv)
> +{
> + int i;
> + u8 addr = 0x00;
> + u8 status[6];
> + struct i2c_msg msg[2] = {
> + {
> + .addr = priv->i2c_address,
> + .flags = 0,
> + .len = 1,
> + .buf = &addr
> + }, {
> + .addr = priv->i2c_address,
> + .flags = I2C_M_RD,
> + .len = sizeof(status),
> + .buf = status
> + }
> + };
> +
> + msleep(100);
That looks weird: starting the code with a sleep. I suspect that
this is misplaced. You're already sleeping for 20 ms before
calling this function, at lnbh25_set_voltage().
I suspect that the best would be to remove this and to change the
wait time for the voltage to stabilize at lnbh25_set_voltage() to
120 ms.
> + for (i = 0; i < 2; i++) {
> + if (i2c_transfer(priv->i2c, &msg[i], 1) != 1) {
> + dprintk("%s(): I2C transfer %d failed\n",
> + __func__, i);
> + return;
It would be better to return an error code here.
> + }
> + }
> + for (i = 0; i < sizeof(status); i++)
> + dprintk("%s(): reg %d value 0x%x\n",
> + __func__, i, (int)status[i]);
> + if ((status[0] & (LNBH25_STATUS_OFL | LNBH25_STATUS_VMON)) != 0)
> + dev_err(&priv->i2c->dev,
> + "%s(): voltage in failure state, status reg 0x%x\n",
> + __func__, status[0]);
> +}
> +
> +static int lnbh25_set_voltage(struct dvb_frontend *fe,
> + fe_sec_voltage_t voltage)
> +{
> + u8 data1_reg;
> + const char *vsel;
> + struct lnbh25_priv *priv = fe->sec_priv;
> + struct i2c_msg msg = {
> + .addr = priv->i2c_address,
> + .flags = 0,
> + .len = sizeof(priv->config),
> + .buf = priv->config
> + };
> +
> + switch (voltage) {
> + case SEC_VOLTAGE_OFF:
> + data1_reg = 0x00;
> + vsel = "Off";
> + break;
> + case SEC_VOLTAGE_13:
> + data1_reg = LNBH25_VSEL_13;
> + vsel = "13V";
> + break;
> + case SEC_VOLTAGE_18:
> + data1_reg = LNBH25_VSEL_18;
> + vsel = "18V";
> + break;
> + default:
> + return -EINVAL;
> + }
> + priv->config[1] = data1_reg;
> + dprintk("%s(): %s, I2C 0x%x write [ %02x %02x %02x ]\n",
> + __func__, vsel, priv->i2c_address,
> + priv->config[0], priv->config[1], priv->config[2]);
> + if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
> + dev_err(&priv->i2c->dev,
> + "%s(): I2C transfer error\n", __func__);
> + return -EIO;
Please return the error code that i2c_transfer() returns, instead
of -EIO.
> + }
> + msleep(20);
> + if (voltage != SEC_VOLTAGE_OFF)
> + lnbh25_read_vmon(priv);
As said before, assuming that those msleep() are required, it seems that
the right thing to do here would be, instead:
if (voltage != SEC_VOLTAGE_OFF) {
msleep(120);
lnbh25_read_vmon(priv);
} else {
msleep(20);
}
and remove that weird msleep(100) from lnbh25_read_vmon().
> + return 0;
> +}
> +
> +static void lnbh25_release(struct dvb_frontend *fe)
> +{
> + struct lnbh25_priv *priv = fe->sec_priv;
> +
> + dprintk("%s()\n", __func__);
> + lnbh25_set_voltage(fe, SEC_VOLTAGE_OFF);
> + kfree(fe->sec_priv);
> + fe->sec_priv = NULL;
> +}
> +
> +struct dvb_frontend *lnbh25_attach(
> + struct dvb_frontend *fe,
> + struct lnbh25_config *cfg,
> + struct i2c_adapter *i2c)
Just identation. It is better to declare as:
struct dvb_frontend *lnbh25_attach(struct dvb_frontend *fe,
struct lnbh25_config *cfg,
struct i2c_adapter *i2c)
> +{
> + struct lnbh25_priv *priv;
> +
> + dprintk("%s()\n", __func__);
> + priv = kzalloc(sizeof(struct lnbh25_priv), GFP_KERNEL);
> + if (!priv)
> + return NULL;
> + priv->i2c_address = (cfg->i2c_address >> 1);
> + priv->i2c = i2c;
> + priv->config[0] = 0x02;
> + priv->config[1] = 0x00;
> + priv->config[2] = cfg->data2_config;
> + fe->sec_priv = priv;
> + if (lnbh25_set_voltage(fe, SEC_VOLTAGE_OFF)) {
> + dev_err(&i2c->dev, "%s(): no LNBH25 found at I2C addr 0x%02x\n",
> + __func__, priv->i2c_address);
> + kfree(priv);
> + fe->sec_priv = NULL;
> + return NULL;
> + }
> +
> + fe->ops.release_sec = lnbh25_release;
> + fe->ops.set_voltage = lnbh25_set_voltage;
> +
> + dev_err(&i2c->dev, "%s(): attached at I2C addr 0x%02x\n",
> + __func__, priv->i2c_address);
> + return fe;
> +}
> +EXPORT_SYMBOL(lnbh25_attach);
> +
> +module_param(debug, int, 0644);
> +MODULE_DESCRIPTION("ST LNBH25 driver");
> +MODULE_AUTHOR("info@netup.ru");
> +MODULE_LICENSE("GPL");
> +
> diff --git a/drivers/media/dvb-frontends/lnbh25.h b/drivers/media/dvb-frontends/lnbh25.h
> new file mode 100644
> index 0000000..7fc5123
> --- /dev/null
> +++ b/drivers/media/dvb-frontends/lnbh25.h
> @@ -0,0 +1,56 @@
> +/*
> + * lnbh25.c
> + *
> + * Driver for LNB supply and control IC LNBH25
> + *
> + * Copyright (C) 2014 NetUP Inc.
> + * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
> + * Copyright (C) 2014 Abylay Ospan <aospan@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.
> + */
> +
> +#ifndef LNBH25_H
> +#define LNBH25_H
> +
> +#include <linux/i2c.h>
> +#include <linux/kconfig.h>
> +#include <linux/dvb/frontend.h>
> +
> +/* 22 kHz tone enabled. Tone output controlled by DSQIN pin */
> +#define LNBH25_TEN 0x01
> +/* Low power mode activated (used only with 22 kHz tone output disabled) */
> +#define LNBH25_LPM 0x02
> +/* DSQIN input pin is set to receive external 22 kHz TTL signal source */
> +#define LNBH25_EXTM 0x04
> +
> +struct lnbh25_config {
> + u8 i2c_address;
> + u8 data2_config;
> +};
> +
> +#if IS_ENABLED(CONFIG_DVB_LNBH25)
> +struct dvb_frontend *lnbh25_attach(
> + struct dvb_frontend *fe,
> + struct lnbh25_config *cfg,
> + struct i2c_adapter *i2c);
> +#else
> +static inline dvb_frontend *lnbh25_attach(
> + struct dvb_frontend *fe,
> + struct lnbh25_config *cfg,
> + struct i2c_adapter *i2c)
> +{
> + printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
> + return NULL;
> +}
> +#endif
> +
> +#endif
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-02-02 9:22 [PATCH 3/5] [media] lnbh25: LNBH25 SEC controller driver Kozlov Sergey
2015-03-05 10:59 ` Mauro Carvalho Chehab
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