[media] dvb: Add support for pctv452e
Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/frontends/lnbp22.c b/drivers/media/dvb/frontends/lnbp22.c
new file mode 100644
index 0000000..84ad039
--- /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");