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path: root/drivers/media/tuners/tua9001.c
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Diffstat (limited to 'drivers/media/tuners/tua9001.c')
-rw-r--r--drivers/media/tuners/tua9001.c294
1 files changed, 294 insertions, 0 deletions
diff --git a/drivers/media/tuners/tua9001.c b/drivers/media/tuners/tua9001.c
new file mode 100644
index 000000000..83a6240f6
--- /dev/null
+++ b/drivers/media/tuners/tua9001.c
@@ -0,0 +1,294 @@
+/*
+ * 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 {
+ dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x\n",
+ KBUILD_MODNAME, ret, reg);
+ ret = -EREMOTEIO;
+ }
+
+ return ret;
+}
+
+static int tua9001_release(struct dvb_frontend *fe)
+{
+ struct tua9001_priv *priv = fe->tuner_priv;
+ int ret = 0;
+
+ dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+ if (fe->callback)
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_CEN, 0);
+
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+
+ return ret;
+}
+
+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 },
+ };
+
+ dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+ if (fe->callback) {
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_RESETN, 0);
+ if (ret < 0)
+ goto err;
+ }
+
+ 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)
+ goto err_i2c_gate_ctrl;
+ }
+
+err_i2c_gate_ctrl:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
+err:
+ if (ret < 0)
+ dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+ return ret;
+}
+
+static int tua9001_sleep(struct dvb_frontend *fe)
+{
+ struct tua9001_priv *priv = fe->tuner_priv;
+ int ret = 0;
+
+ dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+ if (fe->callback)
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_RESETN, 1);
+
+ if (ret < 0)
+ dev_dbg(&priv->i2c->dev, "%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 = 0, i;
+ u16 val;
+ u32 frequency;
+ struct reg_val data[2];
+
+ dev_dbg(&priv->i2c->dev, "%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 */
+
+ if (fe->callback) {
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_RXEN, 0);
+ if (ret < 0)
+ goto err_i2c_gate_ctrl;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(data); i++) {
+ ret = tua9001_wr_reg(priv, data[i].reg, data[i].val);
+ if (ret < 0)
+ goto err_i2c_gate_ctrl;
+ }
+
+ if (fe->callback) {
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_RXEN, 1);
+ if (ret < 0)
+ goto err_i2c_gate_ctrl;
+ }
+
+err_i2c_gate_ctrl:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c-gate */
+err:
+ if (ret < 0)
+ dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+
+ return ret;
+}
+
+static int tua9001_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct tua9001_priv *priv = fe->tuner_priv;
+
+ dev_dbg(&priv->i2c->dev, "%s:\n", __func__);
+
+ *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,
+ .sleep = tua9001_sleep,
+ .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;
+ int ret;
+
+ priv = kzalloc(sizeof(struct tua9001_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->cfg = cfg;
+ priv->i2c = i2c;
+
+ if (fe->callback) {
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_CEN, 1);
+ if (ret < 0)
+ goto err;
+
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_RXEN, 0);
+ if (ret < 0)
+ goto err;
+
+ ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ TUA9001_CMD_RESETN, 1);
+ if (ret < 0)
+ goto err;
+ }
+
+ dev_info(&priv->i2c->dev,
+ "%s: Infineon TUA 9001 successfully attached\n",
+ KBUILD_MODNAME);
+
+ memcpy(&fe->ops.tuner_ops, &tua9001_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+
+ fe->tuner_priv = priv;
+ return fe;
+err:
+ dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
+ kfree(priv);
+ return NULL;
+}
+EXPORT_SYMBOL(tua9001_attach);
+
+MODULE_DESCRIPTION("Infineon TUA 9001 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-10 00:29:10 +0000