[media] Infineon TUA 9001 silicon tuner driver

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

5 files changed, 302 insertions, 0 deletions

diff --git a/drivers/media/common/tuners/Kconfig b/drivers/media/common/tuners/Kconfig
index 4a6d5cef3964..ae8ebcfa6fa2 100644
--- a/drivers/media/common/tuners/Kconfig
+++ b/drivers/media/common/tuners/Kconfig
@@ -211,4 +211,10 @@ config MEDIA_TUNER_TDA18212
         help
           NXP TDA18212 silicon tuner driver.
 
+config MEDIA_TUNER_TUA9001
+        tristate "Infineon TUA 9001 silicon tuner"
+        depends on VIDEO_MEDIA && I2C
+        default m if MEDIA_TUNER_CUSTOMISE
+        help
+          Infineon TUA 9001 silicon tuner driver.
 endmenu
diff --git a/drivers/media/common/tuners/Makefile b/drivers/media/common/tuners/Makefile
index f80407eb8998..6c3040501c45 100644
--- a/drivers/media/common/tuners/Makefile
+++ b/drivers/media/common/tuners/Makefile
@@ -28,6 +28,7 @@ obj-$(CONFIG_MEDIA_TUNER_MC44S803) += mc44s803.o
 obj-$(CONFIG_MEDIA_TUNER_MAX2165) += max2165.o
 obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
 obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
+obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o
 
 ccflags-y += -I$(srctree)/drivers/media/dvb/dvb-core
 ccflags-y += -I$(srctree)/drivers/media/dvb/frontends
diff --git a/drivers/media/common/tuners/tua9001.c b/drivers/media/common/tuners/tua9001.c
new file mode 100644
index 000000000000..de2607084672
--- /dev/null
+++ b/drivers/media/common/tuners/tua9001.c
@@ -0,0 +1,215 @@
+/*
+ * Infineon TUA 9001 silicon tuner driver
+ *
+ * Copyright (C) 2009 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.
+ */
+
+#include "tua9001.h"
+#include "tua9001_priv.h"
+
+/* write register */
+static int tua9001_wr_reg(struct tua9001_priv *priv, u8 reg, u16 val)
+{
+        int ret;
+        u8 buf[3] = { reg, (val >> 8) & 0xff, (val >> 0) & 0xff };
+        struct i2c_msg msg[1] = {
+                {
+                        .addr = priv->cfg->i2c_addr,
+                        .flags = 0,
+                        .len = sizeof(buf),
+                        .buf = buf,
+                }
+        };
+
+        ret = i2c_transfer(priv->i2c, msg, 1);
+        if (ret == 1) {
+                ret = 0;
+        } else {
+                printk(KERN_WARNING "%s: I2C wr failed=%d reg=%02x\n",
+                                __func__, ret, reg);
+                ret = -EREMOTEIO;
+        }
+
+        return ret;
+}
+
+static int tua9001_release(struct dvb_frontend *fe)
+{
+        kfree(fe->tuner_priv);
+        fe->tuner_priv = NULL;
+
+        return 0;
+}
+
+static int tua9001_init(struct dvb_frontend *fe)
+{
+        struct tua9001_priv *priv = fe->tuner_priv;
+        int ret = 0;
+        u8 i;
+        struct reg_val data[] = {
+                { 0x1e, 0x6512 },
+                { 0x25, 0xb888 },
+                { 0x39, 0x5460 },
+                { 0x3b, 0x00c0 },
+                { 0x3a, 0xf000 },
+                { 0x08, 0x0000 },
+                { 0x32, 0x0030 },
+                { 0x41, 0x703a },
+                { 0x40, 0x1c78 },
+                { 0x2c, 0x1c00 },
+                { 0x36, 0xc013 },
+                { 0x37, 0x6f18 },
+                { 0x27, 0x0008 },
+                { 0x2a, 0x0001 },
+                { 0x34, 0x0a40 },
+        };
+
+        if (fe->ops.i2c_gate_ctrl)
+                fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
+
+        for (i = 0; i < ARRAY_SIZE(data); i++) {
+                ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
+                if (ret)
+                        break;
+        }
+
+        if (fe->ops.i2c_gate_ctrl)
+                fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
+
+        if (ret < 0)
+                pr_debug("%s: failed=%d\n", __func__, ret);
+
+        return ret;
+}
+
+static int tua9001_set_params(struct dvb_frontend *fe)
+{
+        struct tua9001_priv *priv = fe->tuner_priv;
+        struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+        int ret, i;
+        u16 val;
+        u32 frequency;
+        struct reg_val data[2];
+
+        pr_debug("%s: delivery_system=%d frequency=%d bandwidth_hz=%d\n",
+                        __func__, c->delivery_system, c->frequency,
+                        c->bandwidth_hz);
+
+        switch (c->delivery_system) {
+        case SYS_DVBT:
+                switch (c->bandwidth_hz) {
+                case 8000000:
+                        val  = 0x0000;
+                        break;
+                case 7000000:
+                        val  = 0x1000;
+                        break;
+                case 6000000:
+                        val  = 0x2000;
+                        break;
+                case 5000000:
+                        val  = 0x3000;
+                        break;
+                default:
+                        ret = -EINVAL;
+                        goto err;
+                }
+                break;
+        default:
+                ret = -EINVAL;
+                goto err;
+        }
+
+        data[0].reg = 0x04;
+        data[0].val = val;
+
+        frequency = (c->frequency - 150000000);
+        frequency /= 100;
+        frequency *= 48;
+        frequency /= 10000;
+
+        data[1].reg = 0x1f;
+        data[1].val = frequency;
+
+        if (fe->ops.i2c_gate_ctrl)
+                fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c-gate */
+
+        for (i = 0; i < ARRAY_SIZE(data); i++) {
+                ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
+                if (ret < 0)
+                        break;
+        }
+
+        if (fe->ops.i2c_gate_ctrl)
+                fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
+
+err:
+        if (ret < 0)
+                pr_debug("%s: failed=%d\n", __func__, ret);
+
+        return ret;
+}
+
+static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+        *frequency = 0; /* Zero-IF */
+
+        return 0;
+}
+
+static const struct dvb_tuner_ops tua9001_tuner_ops = {
+        .info = {
+                .name           = "Infineon TUA 9001",
+
+                .frequency_min  = 170000000,
+                .frequency_max  = 862000000,
+                .frequency_step = 0,
+        },
+
+        .release = tua9001_release,
+
+        .init = tua9001_init,
+        .set_params = tua9001_set_params,
+
+        .get_if_frequency = tua9001_get_if_frequency,
+};
+
+struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
+                struct i2c_adapter *i2c, struct tua9001_config *cfg)
+{
+        struct tua9001_priv *priv = NULL;
+
+        priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
+        if (priv == NULL)
+                return NULL;
+
+        priv->cfg = cfg;
+        priv->i2c = i2c;
+
+        printk(KERN_INFO "Infineon TUA 9001 successfully attached.");
+
+        memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
+                        sizeof(struct dvb_tuner_ops));
+
+        fe->tuner_priv = priv;
+        return fe;
+}
+EXPORT_SYMBOL(tua9001_attach);
+
+MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/common/tuners/tua9001.h b/drivers/media/common/tuners/tua9001.h
new file mode 100644
index 000000000000..38d6ae76b1d6
--- /dev/null
+++ b/drivers/media/common/tuners/tua9001.h
@@ -0,0 +1,46 @@
+/*
+ * Infineon TUA 9001 silicon tuner driver
+ *
+ * Copyright (C) 2009 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 TUA9001_H
+#define TUA9001_H
+
+#include "dvb_frontend.h"
+
+struct tua9001_config {
+        /*
+         * I2C address
+         */
+        u8 i2c_addr;
+};
+
+#if defined(CONFIG_MEDIA_TUNER_TUA9001) || \
+        (defined(CONFIG_MEDIA_TUNER_TUA9001_MODULE) && defined(MODULE))
+extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
+                struct i2c_adapter *i2c, struct tua9001_config *cfg);
+#else
+static inline struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
+                struct i2c_adapter *i2c, struct tua9001_config *cfg)
+{
+        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+        return NULL;
+}
+#endif
+
+#endif
diff --git a/drivers/media/common/tuners/tua9001_priv.h b/drivers/media/common/tuners/tua9001_priv.h
new file mode 100644
index 000000000000..73cc1ce0575c
--- /dev/null
+++ b/drivers/media/common/tuners/tua9001_priv.h
@@ -0,0 +1,34 @@
+/*
+ * Infineon TUA 9001 silicon tuner driver
+ *
+ * Copyright (C) 2009 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 TUA9001_PRIV_H
+#define TUA9001_PRIV_H
+
+struct reg_val {
+        u8 reg;
+        u16 val;
+};
+
+struct tua9001_priv {
+        struct tua9001_config *cfg;
+        struct i2c_adapter *i2c;
+};
+
+#endif