[media] Realtek RTL2830 DVB-T demodulator driver

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 672 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index ebb5ed7a7783..2995204c3355 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -425,6 +425,13 @@ config DVB_CXD2820R
         help
           Say Y when you want to support this frontend.
 
+config DVB_RTL2830
+        tristate "Realtek RTL2830 DVB-T"
+        depends on DVB_CORE && I2C
+        default m if DVB_FE_CUSTOMISE
+        help
+          Say Y when you want to support this frontend.
+
 comment "DVB-C (cable) frontends"
         depends on DVB_CORE
 
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 00a20636df62..7f85e64cdcb1 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -96,4 +96,5 @@ obj-$(CONFIG_DVB_TDA18271C2DD) += tda18271c2dd.o
 obj-$(CONFIG_DVB_IT913X_FE) += it913x-fe.o
 obj-$(CONFIG_DVB_A8293) += a8293.o
 obj-$(CONFIG_DVB_TDA10071) += tda10071.o
+obj-$(CONFIG_DVB_RTL2830) += rtl2830.o
 
diff --git a/drivers/media/dvb/frontends/rtl2830.c b/drivers/media/dvb/frontends/rtl2830.c
new file mode 100644
index 000000000000..37a9fa29874e
--- /dev/null
+++ b/drivers/media/dvb/frontends/rtl2830.c
@@ -0,0 +1,514 @@
+/*
+ * Realtek RTL2830 DVB-T demodulator driver
+ *
+ * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
+ *
+ *    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.,
+ *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+/*
+ * Driver implements own I2C-adapter for tuner I2C access. That's since chip
+ * have unusual I2C-gate control which closes gate automatically after each
+ * I2C transfer. Using own I2C adapter we can workaround that.
+ */
+
+#include "rtl2830_priv.h"
+
+int rtl2830_debug;
+module_param_named(debug, rtl2830_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+/* write multiple registers */
+static int rtl2830_wr_regs(struct rtl2830_priv *priv, u16 reg, u8 *val, int len)
+{
+        int ret;
+        u8 buf[2+len];
+        struct i2c_msg msg[1] = {
+                {
+                        .addr = priv->cfg.i2c_addr,
+                        .flags = 0,
+                        .len = sizeof(buf),
+                        .buf = buf,
+                }
+        };
+
+        buf[0] = (reg >> 8) & 0xff;
+        buf[1] = (reg >> 0) & 0xff;
+        memcpy(&buf[2], val, len);
+
+        ret = i2c_transfer(priv->i2c, msg, 1);
+        if (ret == 1) {
+                ret = 0;
+        } else {
+                warn("i2c wr failed=%d reg=%04x len=%d", ret, reg, len);
+                ret = -EREMOTEIO;
+        }
+        return ret;
+}
+
+/* read multiple registers */
+static int rtl2830_rd_regs(struct rtl2830_priv *priv, u16 reg, u8 *val, int len)
+{
+        int ret;
+        u8 buf[2];
+        struct i2c_msg msg[2] = {
+                {
+                        .addr = priv->cfg.i2c_addr,
+                        .flags = 0,
+                        .len = sizeof(buf),
+                        .buf = buf,
+                }, {
+                        .addr = priv->cfg.i2c_addr,
+                        .flags = I2C_M_RD,
+                        .len = len,
+                        .buf = val,
+                }
+        };
+
+        buf[0] = (reg >> 8) & 0xff;
+        buf[1] = (reg >> 0) & 0xff;
+
+        ret = i2c_transfer(priv->i2c, msg, 2);
+        if (ret == 2) {
+                ret = 0;
+        } else {
+                warn("i2c rd failed=%d reg=%04x len=%d", ret, reg, len);
+                ret = -EREMOTEIO;
+        }
+        return ret;
+}
+
+#if 0 /* currently not used */
+/* write single register */
+static int rtl2830_wr_reg(struct rtl2830_priv *priv, u16 reg, u8 val)
+{
+        return rtl2830_wr_regs(priv, reg, &val, 1);
+}
+#endif
+
+/* read single register */
+static int rtl2830_rd_reg(struct rtl2830_priv *priv, u16 reg, u8 *val)
+{
+        return rtl2830_rd_regs(priv, reg, val, 1);
+}
+
+/* write single register with mask */
+int rtl2830_wr_reg_mask(struct rtl2830_priv *priv, u16 reg, u8 val, u8 mask)
+{
+        int ret;
+        u8 tmp;
+
+        /* no need for read if whole reg is written */
+        if (mask != 0xff) {
+                ret = rtl2830_rd_regs(priv, reg, &tmp, 1);
+                if (ret)
+                        return ret;
+
+                val &= mask;
+                tmp &= ~mask;
+                val |= tmp;
+        }
+
+        return rtl2830_wr_regs(priv, reg, &val, 1);
+}
+
+/* read single register with mask */
+int rtl2830_rd_reg_mask(struct rtl2830_priv *priv, u16 reg, u8 *val, u8 mask)
+{
+        int ret, i;
+        u8 tmp;
+
+        ret = rtl2830_rd_regs(priv, reg, &tmp, 1);
+        if (ret)
+                return ret;
+
+        tmp &= mask;
+
+        /* find position of the first bit */
+        for (i = 0; i < 8; i++) {
+                if ((mask >> i) & 0x01)
+                        break;
+        }
+        *val = tmp >> i;
+
+        return 0;
+}
+
+static int rtl2830_init(struct dvb_frontend *fe)
+{
+        struct rtl2830_priv *priv = fe->demodulator_priv;
+        int ret, i;
+        u64 num;
+        u8 buf[3], tmp;
+        u32 if_ctl;
+        struct rtl2830_reg_val_mask tab[] = {
+                { 0x00d, 0x01, 0x03 },
+                { 0x00d, 0x10, 0x10 },
+                { 0x104, 0x00, 0x1e },
+                { 0x105, 0x80, 0x80 },
+                { 0x110, 0x02, 0x03 },
+                { 0x110, 0x08, 0x0c },
+                { 0x17b, 0x00, 0x40 },
+                { 0x17d, 0x05, 0x0f },
+                { 0x17d, 0x50, 0xf0 },
+                { 0x18c, 0x08, 0x0f },
+                { 0x18d, 0x00, 0xc0 },
+                { 0x188, 0x05, 0x0f },
+                { 0x189, 0x00, 0xfc },
+                { 0x2d5, 0x02, 0x02 },
+                { 0x2f1, 0x02, 0x06 },
+                { 0x2f1, 0x20, 0xf8 },
+                { 0x16d, 0x00, 0x01 },
+                { 0x1a6, 0x00, 0x80 },
+                { 0x106, priv->cfg.vtop, 0x3f },
+                { 0x107, priv->cfg.krf, 0x3f },
+                { 0x112, 0x28, 0xff },
+                { 0x103, priv->cfg.agc_targ_val, 0xff },
+                { 0x00a, 0x02, 0x07 },
+                { 0x140, 0x0c, 0x3c },
+                { 0x140, 0x40, 0xc0 },
+                { 0x15b, 0x05, 0x07 },
+                { 0x15b, 0x28, 0x38 },
+                { 0x15c, 0x05, 0x07 },
+                { 0x15c, 0x28, 0x38 },
+                { 0x115, priv->cfg.spec_inv, 0x01 },
+                { 0x16f, 0x01, 0x07 },
+                { 0x170, 0x18, 0x38 },
+                { 0x172, 0x0f, 0x0f },
+                { 0x173, 0x08, 0x38 },
+                { 0x175, 0x01, 0x07 },
+                { 0x176, 0x00, 0xc0 },
+        };
+
+        for (i = 0; i < ARRAY_SIZE(tab); i++) {
+                ret = rtl2830_wr_reg_mask(priv, tab[i].reg, tab[i].val,
+                        tab[i].mask);
+                if (ret)
+                        goto err;
+        }
+
+        ret = rtl2830_wr_regs(priv, 0x18f, "\x28\x00", 2);
+        if (ret)
+                goto err;
+
+        ret = rtl2830_wr_regs(priv, 0x195,
+                "\x04\x06\x0a\x12\x0a\x12\x1e\x28", 8);
+        if (ret)
+                goto err;
+
+        num = priv->cfg.if_dvbt % priv->cfg.xtal;
+        num *= 0x400000;
+        num /= priv->cfg.xtal;
+        num = -num;
+        if_ctl = num & 0x3fffff;
+        dbg("%s: if_ctl=%08x", __func__, if_ctl);
+
+        ret = rtl2830_rd_reg_mask(priv, 0x119, &tmp, 0xc0); /* b[7:6] */
+        if (ret)
+                goto err;
+
+        buf[0] = tmp << 6;
+        buf[0] = (if_ctl >> 16) & 0x3f;
+        buf[1] = (if_ctl >>  8) & 0xff;
+        buf[2] = (if_ctl >>  0) & 0xff;
+
+        ret = rtl2830_wr_regs(priv, 0x119, buf, 3);
+        if (ret)
+                goto err;
+
+        /* TODO: spec init */
+
+        /* soft reset */
+        ret = rtl2830_wr_reg_mask(priv, 0x101, 0x04, 0x04);
+        if (ret)
+                goto err;
+
+        ret = rtl2830_wr_reg_mask(priv, 0x101, 0x00, 0x04);
+        if (ret)
+                goto err;
+
+        return ret;
+err:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+int rtl2830_get_tune_settings(struct dvb_frontend *fe,
+        struct dvb_frontend_tune_settings *s)
+{
+        s->min_delay_ms = 500;
+        s->step_size = fe->ops.info.frequency_stepsize * 2;
+        s->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
+
+        return 0;
+}
+
+static int rtl2830_set_frontend(struct dvb_frontend *fe)
+{
+        struct rtl2830_priv *priv = fe->demodulator_priv;
+        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+        int ret, i;
+        static u8 bw_params1[3][34] = {
+                {
+                0x1f, 0xf0, 0x1f, 0xf0, 0x1f, 0xfa, 0x00, 0x17, 0x00, 0x41,
+                0x00, 0x64, 0x00, 0x67, 0x00, 0x38, 0x1f, 0xde, 0x1f, 0x7a,
+                0x1f, 0x47, 0x1f, 0x7c, 0x00, 0x30, 0x01, 0x4b, 0x02, 0x82,
+                0x03, 0x73, 0x03, 0xcf, /* 6 MHz */
+                }, {
+                0x1f, 0xfa, 0x1f, 0xda, 0x1f, 0xc1, 0x1f, 0xb3, 0x1f, 0xca,
+                0x00, 0x07, 0x00, 0x4d, 0x00, 0x6d, 0x00, 0x40, 0x1f, 0xca,
+                0x1f, 0x4d, 0x1f, 0x2a, 0x1f, 0xb2, 0x00, 0xec, 0x02, 0x7e,
+                0x03, 0xd0, 0x04, 0x53, /* 7 MHz */
+                }, {
+                0x00, 0x10, 0x00, 0x0e, 0x1f, 0xf7, 0x1f, 0xc9, 0x1f, 0xa0,
+                0x1f, 0xa6, 0x1f, 0xec, 0x00, 0x4e, 0x00, 0x7d, 0x00, 0x3a,
+                0x1f, 0x98, 0x1f, 0x10, 0x1f, 0x40, 0x00, 0x75, 0x02, 0x5f,
+                0x04, 0x24, 0x04, 0xdb, /* 8 MHz */
+                },
+        };
+        static u8 bw_params2[3][6] = {
+                {0xc3, 0x0c, 0x44, 0x33, 0x33, 0x30,}, /* 6 MHz */
+                {0xb8, 0xe3, 0x93, 0x99, 0x99, 0x98,}, /* 7 MHz */
+                {0xae, 0xba, 0xf3, 0x26, 0x66, 0x64,}, /* 8 MHz */
+        };
+
+
+        dbg("%s: frequency=%d bandwidth_hz=%d inversion=%d", __func__,
+                c->frequency, c->bandwidth_hz, c->inversion);
+
+        /* program tuner */
+        if (fe->ops.tuner_ops.set_params)
+                fe->ops.tuner_ops.set_params(fe);
+
+        switch (c->bandwidth_hz) {
+        case 6000000:
+                i = 0;
+                break;
+        case 7000000:
+                i = 1;
+                break;
+        case 8000000:
+                i = 2;
+                break;
+        default:
+                dbg("invalid bandwidth");
+                return -EINVAL;
+        }
+
+        ret = rtl2830_wr_reg_mask(priv, 0x008, i << 1, 0x06);
+        if (ret)
+                goto err;
+
+        /* 1/2 split I2C write */
+        ret = rtl2830_wr_regs(priv, 0x11c, &bw_params1[i][0], 17);
+        if (ret)
+                goto err;
+
+        /* 2/2 split I2C write */
+        ret = rtl2830_wr_regs(priv, 0x12d, &bw_params1[i][17], 17);
+        if (ret)
+                goto err;
+
+        ret = rtl2830_wr_regs(priv, 0x19d, bw_params2[i], 6);
+        if (ret)
+                goto err;
+
+        return ret;
+err:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int rtl2830_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+        struct rtl2830_priv *priv = fe->demodulator_priv;
+        int ret;
+        u8 tmp;
+        *status = 0;
+
+        ret = rtl2830_rd_reg_mask(priv, 0x351, &tmp, 0x78); /* [6:3] */
+        if (ret)
+                goto err;
+
+        if (tmp == 11) {
+                *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+                        FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+        } else if (tmp == 10) {
+                *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+                        FE_HAS_VITERBI;
+        }
+
+        return ret;
+err:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static int rtl2830_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+        *snr = 0;
+        return 0;
+}
+
+static int rtl2830_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+        *ber = 0;
+        return 0;
+}
+
+static int rtl2830_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+        *ucblocks = 0;
+        return 0;
+}
+
+static int rtl2830_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
+{
+        *strength = 0;
+        return 0;
+}
+
+static struct dvb_frontend_ops rtl2830_ops;
+
+static u32 rtl2830_tuner_i2c_func(struct i2c_adapter *adapter)
+{
+        return I2C_FUNC_I2C;
+}
+
+static int rtl2830_tuner_i2c_xfer(struct i2c_adapter *i2c_adap,
+        struct i2c_msg msg[], int num)
+{
+        struct rtl2830_priv *priv = i2c_get_adapdata(i2c_adap);
+        int ret;
+
+        /* open i2c-gate */
+        ret = rtl2830_wr_reg_mask(priv, 0x101, 0x08, 0x08);
+        if (ret)
+                goto err;
+
+        ret = i2c_transfer(priv->i2c, msg, num);
+        if (ret < 0)
+                warn("tuner i2c failed=%d", ret);
+
+        return ret;
+err:
+        dbg("%s: failed=%d", __func__, ret);
+        return ret;
+}
+
+static struct i2c_algorithm rtl2830_tuner_i2c_algo = {
+        .master_xfer   = rtl2830_tuner_i2c_xfer,
+        .functionality = rtl2830_tuner_i2c_func,
+};
+
+struct i2c_adapter *rtl2830_get_tuner_i2c_adapter(struct dvb_frontend *fe)
+{
+        struct rtl2830_priv *priv = fe->demodulator_priv;
+        return &priv->tuner_i2c_adapter;
+}
+EXPORT_SYMBOL(rtl2830_get_tuner_i2c_adapter);
+
+static void rtl2830_release(struct dvb_frontend *fe)
+{
+        struct rtl2830_priv *priv = fe->demodulator_priv;
+
+        i2c_del_adapter(&priv->tuner_i2c_adapter);
+        kfree(priv);
+}
+
+struct dvb_frontend *rtl2830_attach(const struct rtl2830_config *cfg,
+        struct i2c_adapter *i2c)
+{
+        struct rtl2830_priv *priv = NULL;
+        int ret = 0;
+        u8 tmp;
+
+        /* allocate memory for the internal state */
+        priv = kzalloc(sizeof(struct rtl2830_priv), GFP_KERNEL);
+        if (priv == NULL)
+                goto err;
+
+        /* setup the priv */
+        priv->i2c = i2c;
+        memcpy(&priv->cfg, cfg, sizeof(struct rtl2830_config));
+
+        /* check if the demod is there */
+        ret = rtl2830_rd_reg(priv, 0x000, &tmp);
+        if (ret)
+                goto err;
+
+        /* create dvb_frontend */
+        memcpy(&priv->fe.ops, &rtl2830_ops, sizeof(struct dvb_frontend_ops));
+        priv->fe.demodulator_priv = priv;
+
+        /* create tuner i2c adapter */
+        strlcpy(priv->tuner_i2c_adapter.name, "RTL2830 tuner I2C adapter",
+                sizeof(priv->tuner_i2c_adapter.name));
+        priv->tuner_i2c_adapter.algo = &rtl2830_tuner_i2c_algo;
+        priv->tuner_i2c_adapter.algo_data = NULL;
+        i2c_set_adapdata(&priv->tuner_i2c_adapter, priv);
+        if (i2c_add_adapter(&priv->tuner_i2c_adapter) < 0) {
+                err("tuner I2C bus could not be initialized");
+                goto err;
+        }
+
+        return &priv->fe;
+err:
+        dbg("%s: failed=%d", __func__, ret);
+        kfree(priv);
+        return NULL;
+}
+EXPORT_SYMBOL(rtl2830_attach);
+
+static struct dvb_frontend_ops rtl2830_ops = {
+        .delsys = { SYS_DVBT },
+        .info = {
+                .name = "Realtek RTL2830 (DVB-T)",
+                .caps = FE_CAN_FEC_1_2 |
+                        FE_CAN_FEC_2_3 |
+                        FE_CAN_FEC_3_4 |
+                        FE_CAN_FEC_5_6 |
+                        FE_CAN_FEC_7_8 |
+                        FE_CAN_FEC_AUTO |
+                        FE_CAN_QPSK |
+                        FE_CAN_QAM_16 |
+                        FE_CAN_QAM_64 |
+                        FE_CAN_QAM_AUTO |
+                        FE_CAN_TRANSMISSION_MODE_AUTO |
+                        FE_CAN_GUARD_INTERVAL_AUTO |
+                        FE_CAN_HIERARCHY_AUTO |
+                        FE_CAN_RECOVER |
+                        FE_CAN_MUTE_TS
+        },
+
+        .release = rtl2830_release,
+
+        .init = rtl2830_init,
+
+        .get_tune_settings = rtl2830_get_tune_settings,
+
+        .set_frontend = rtl2830_set_frontend,
+
+        .read_status = rtl2830_read_status,
+        .read_snr = rtl2830_read_snr,
+        .read_ber = rtl2830_read_ber,
+        .read_ucblocks = rtl2830_read_ucblocks,
+        .read_signal_strength = rtl2830_read_signal_strength,
+};
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Realtek RTL2830 DVB-T demodulator driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/rtl2830.h b/drivers/media/dvb/frontends/rtl2830.h
new file mode 100644
index 000000000000..1c6ee91749c2
--- /dev/null
+++ b/drivers/media/dvb/frontends/rtl2830.h
@@ -0,0 +1,97 @@
+/*
+ * Realtek RTL2830 DVB-T demodulator driver
+ *
+ * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
+ *
+ *    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.,
+ *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef RTL2830_H
+#define RTL2830_H
+
+#include <linux/dvb/frontend.h>
+
+struct rtl2830_config {
+        /*
+         * Demodulator I2C address.
+         */
+        u8 i2c_addr;
+
+        /*
+         * Xtal frequency.
+         * Hz
+         * 4000000, 16000000, 25000000, 28800000
+         */
+        u32 xtal;
+
+        /*
+         * TS output mode.
+         */
+        u8 ts_mode;
+
+        /*
+         * Spectrum inversion.
+         */
+        bool spec_inv;
+
+        /*
+         * IFs for all used modes.
+         * Hz
+         * 4570000, 4571429, 36000000, 36125000, 36166667, 44000000
+         */
+        u32 if_dvbt;
+
+        /*
+         */
+        u8 vtop;
+
+        /*
+         */
+        u8 krf;
+
+        /*
+         */
+        u8 agc_targ_val;
+};
+
+#if defined(CONFIG_DVB_RTL2830) || \
+        (defined(CONFIG_DVB_RTL2830_MODULE) && defined(MODULE))
+extern struct dvb_frontend *rtl2830_attach(
+        const struct rtl2830_config *config,
+        struct i2c_adapter *i2c
+);
+
+extern struct i2c_adapter *rtl2830_get_tuner_i2c_adapter(
+        struct dvb_frontend *fe
+);
+#else
+static inline struct dvb_frontend *rtl2830_attach(
+        const struct rtl2830_config *config,
+        struct i2c_adapter *i2c
+)
+{
+        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+        return NULL;
+}
+
+static inline struct i2c_adapter *rtl2830_get_tuner_i2c_adapter(
+        struct dvb_frontend *fe
+)
+{
+        return NULL;
+}
+#endif
+
+#endif /* RTL2830_H */
diff --git a/drivers/media/dvb/frontends/rtl2830_priv.h b/drivers/media/dvb/frontends/rtl2830_priv.h
new file mode 100644
index 000000000000..2bc662ee87a0
--- /dev/null
+++ b/drivers/media/dvb/frontends/rtl2830_priv.h
@@ -0,0 +1,53 @@
+/*
+ * Realtek RTL2830 DVB-T demodulator driver
+ *
+ * Copyright (C) 2011 Antti Palosaari <crope@iki.fi>
+ *
+ *    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.,
+ *    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef RTL2830_PRIV_H
+#define RTL2830_PRIV_H
+
+#include "dvb_frontend.h"
+#include "rtl2830.h"
+
+#define LOG_PREFIX "rtl2830"
+
+#undef dbg
+#define dbg(f, arg...) \
+        if (rtl2830_debug) \
+                printk(KERN_INFO            LOG_PREFIX": " f "\n" , ## arg)
+#undef err
+#define err(f, arg...)  printk(KERN_ERR     LOG_PREFIX": " f "\n" , ## arg)
+#undef info
+#define info(f, arg...) printk(KERN_INFO    LOG_PREFIX": " f "\n" , ## arg)
+#undef warn
+#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg)
+
+struct rtl2830_priv {
+        struct i2c_adapter *i2c;
+        struct dvb_frontend fe;
+        struct rtl2830_config cfg;
+        struct i2c_adapter tuner_i2c_adapter;
+};
+
+struct rtl2830_reg_val_mask {
+        u16 reg;
+        u8  val;
+        u8  mask;
+};
+
+#endif /* RTL2830_PRIV_H */