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>

2 files changed, 262 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/bsbe1.h b/drivers/media/dvb/frontends/bsbe1.h
new file mode 100644
index 000000000000..78573b22ada9
--- /dev/null
+++ b/drivers/media/dvb/frontends/bsbe1.h
@@ -0,0 +1,123 @@
+/*
+ * bsbe1.h - ALPS BSBE1 tuner support (moved from av7110.c)
+ *
+ * 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 BSBE1_H
+#define BSBE1_H
+
+static u8 alps_bsbe1_inittab[] = {
+        0x01, 0x15,
+        0x02, 0x30,
+        0x03, 0x00,
+        0x04, 0x7d,   /* F22FR = 0x7d, F22 = f_VCO / 128 / 0x7d = 22 kHz */
+        0x05, 0x35,   /* I2CT = 0, SCLT = 1, SDAT = 1 */
+        0x06, 0x40,   /* DAC not used, set to high impendance mode */
+        0x07, 0x00,   /* DAC LSB */
+        0x08, 0x40,   /* DiSEqC off, LNB power on OP2/LOCK pin on */
+        0x09, 0x00,   /* FIFO */
+        0x0c, 0x51,   /* OP1 ctl = Normal, OP1 val = 1 (LNB Power ON) */
+        0x0d, 0x82,   /* DC offset compensation = ON, beta_agc1 = 2 */
+        0x0e, 0x23,   /* alpha_tmg = 2, beta_tmg = 3 */
+        0x10, 0x3f,   // AGC2  0x3d
+        0x11, 0x84,
+        0x12, 0xb9,
+        0x15, 0xc9,   // lock detector threshold
+        0x16, 0x00,
+        0x17, 0x00,
+        0x18, 0x00,
+        0x19, 0x00,
+        0x1a, 0x00,
+        0x1f, 0x50,
+        0x20, 0x00,
+        0x21, 0x00,
+        0x22, 0x00,
+        0x23, 0x00,
+        0x28, 0x00,  // out imp: normal  out type: parallel FEC mode:0
+        0x29, 0x1e,  // 1/2 threshold
+        0x2a, 0x14,  // 2/3 threshold
+        0x2b, 0x0f,  // 3/4 threshold
+        0x2c, 0x09,  // 5/6 threshold
+        0x2d, 0x05,  // 7/8 threshold
+        0x2e, 0x01,
+        0x31, 0x1f,  // test all FECs
+        0x32, 0x19,  // viterbi and synchro search
+        0x33, 0xfc,  // rs control
+        0x34, 0x93,  // error control
+        0x0f, 0x92,
+        0xff, 0xff
+};
+
+
+static int alps_bsbe1_set_symbol_rate(struct dvb_frontend* fe, u32 srate, u32 ratio)
+{
+        u8 aclk = 0;
+        u8 bclk = 0;
+
+        if (srate < 1500000) { aclk = 0xb7; bclk = 0x47; }
+        else if (srate < 3000000) { aclk = 0xb7; bclk = 0x4b; }
+        else if (srate < 7000000) { aclk = 0xb7; bclk = 0x4f; }
+        else if (srate < 14000000) { aclk = 0xb7; bclk = 0x53; }
+        else if (srate < 30000000) { aclk = 0xb6; bclk = 0x53; }
+        else if (srate < 45000000) { aclk = 0xb4; bclk = 0x51; }
+
+        stv0299_writereg(fe, 0x13, aclk);
+        stv0299_writereg(fe, 0x14, bclk);
+        stv0299_writereg(fe, 0x1f, (ratio >> 16) & 0xff);
+        stv0299_writereg(fe, 0x20, (ratio >>  8) & 0xff);
+        stv0299_writereg(fe, 0x21, (ratio      ) & 0xf0);
+
+        return 0;
+}
+
+static int alps_bsbe1_pll_set(struct dvb_frontend* fe, struct i2c_adapter *i2c, struct dvb_frontend_parameters* params)
+{
+        int ret;
+        u8 data[4];
+        u32 div;
+        struct i2c_msg msg = { .addr = 0x61, .flags = 0, .buf = data, .len = sizeof(data) };
+
+        if ((params->frequency < 950000) || (params->frequency > 2150000))
+                return -EINVAL;
+
+        div = (params->frequency + (125 - 1)) / 125; // round correctly
+        data[0] = (div >> 8) & 0x7f;
+        data[1] = div & 0xff;
+        data[2] = 0x80 | ((div & 0x18000) >> 10) | 4;
+        data[3] = (params->frequency > 1530000) ? 0xE0 : 0xE4;
+
+        ret = i2c_transfer(i2c, &msg, 1);
+        return (ret != 1) ? -EIO : 0;
+}
+
+static struct stv0299_config alps_bsbe1_config = {
+        .demod_address = 0x68,
+        .inittab = alps_bsbe1_inittab,
+        .mclk = 88000000UL,
+        .invert = 1,
+        .skip_reinit = 0,
+        .min_delay_ms = 100,
+        .set_symbol_rate = alps_bsbe1_set_symbol_rate,
+        .pll_set = alps_bsbe1_pll_set,
+};
+
+#endif
diff --git a/drivers/media/dvb/frontends/lnbp21.h b/drivers/media/dvb/frontends/lnbp21.h
new file mode 100644
index 000000000000..0dcbe61b61b1
--- /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