This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / media / dvb / frontends / lgh06xf.c

diff --git a/drivers/media/dvb/frontends/lgh06xf.c b/drivers/media/dvb/frontends/lgh06xf.c
new file mode 100644 (file)
index 0000000..2202d0c
--- /dev/null
+++ b/drivers/media/dvb/frontends/lgh06xf.c
@@ -0,0 +1,134 @@
+/*
+ *  lgh06xf.c - ATSC Tuner support for LG TDVS-H06xF
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dvb-pll.h"
+#include "lgh06xf.h"
+
+#define LG_H06XF_PLL_I2C_ADDR 0x61
+
+struct lgh06xf_priv {
+       struct i2c_adapter *i2c;
+       u32 frequency;
+};
+
+static int lgh06xf_release(struct dvb_frontend *fe)
+{
+       kfree(fe->tuner_priv);
+       fe->tuner_priv = NULL;
+       return 0;
+}
+
+static int lgh06xf_set_params(struct dvb_frontend* fe,
+                             struct dvb_frontend_parameters* params)
+{
+       struct lgh06xf_priv *priv = fe->tuner_priv;
+       u8 buf[4];
+       struct i2c_msg msg = { .addr = LG_H06XF_PLL_I2C_ADDR, .flags = 0,
+                              .buf = buf, .len = sizeof(buf) };
+       u32 frequency;
+       int result;
+
+       if ((result = dvb_pll_configure(&dvb_pll_lg_tdvs_h06xf, buf,
+                                       params->frequency, 0)) < 0)
+               return result;
+       else
+               frequency = result;
+
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
+       if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
+               printk(KERN_WARNING "lgh06xf: %s error "
+                      "(addr %02x <- %02x, result = %i)\n",
+                      __FUNCTION__, buf[0], buf[1], result);
+               if (result < 0)
+                       return result;
+               else
+                       return -EREMOTEIO;
+       }
+
+       /* Set the Auxiliary Byte. */
+       buf[0] = buf[2];
+       buf[0] &= ~0x20;
+       buf[0] |= 0x18;
+       buf[1] = 0x50;
+       msg.len = 2;
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
+       if ((result = i2c_transfer(priv->i2c, &msg, 1)) != 1) {
+               printk(KERN_WARNING "lgh06xf: %s error "
+                      "(addr %02x <- %02x, result = %i)\n",
+                      __FUNCTION__, buf[0], buf[1], result);
+               if (result < 0)
+                       return result;
+               else
+                       return -EREMOTEIO;
+       }
+
+       priv->frequency = frequency;
+
+       return 0;
+}
+
+static int lgh06xf_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+       struct lgh06xf_priv *priv = fe->tuner_priv;
+       *frequency = priv->frequency;
+       return 0;
+}
+
+static struct dvb_tuner_ops lgh06xf_tuner_ops = {
+       .release       = lgh06xf_release,
+       .set_params    = lgh06xf_set_params,
+       .get_frequency = lgh06xf_get_frequency,
+};
+
+struct dvb_frontend* lgh06xf_attach(struct dvb_frontend *fe,
+                                   struct i2c_adapter *i2c)
+{
+       struct lgh06xf_priv *priv = NULL;
+
+       priv = kzalloc(sizeof(struct lgh06xf_priv), GFP_KERNEL);
+       if (priv == NULL)
+               return NULL;
+
+       priv->i2c = i2c;
+
+       memcpy(&fe->ops.tuner_ops, &lgh06xf_tuner_ops,
+              sizeof(struct dvb_tuner_ops));
+
+       strlcpy(fe->ops.tuner_ops.info.name, dvb_pll_lg_tdvs_h06xf.name,
+               sizeof(fe->ops.tuner_ops.info.name));
+
+       fe->ops.tuner_ops.info.frequency_min = dvb_pll_lg_tdvs_h06xf.min;
+       fe->ops.tuner_ops.info.frequency_max = dvb_pll_lg_tdvs_h06xf.max;
+
+       fe->tuner_priv = priv;
+       return fe;
+}
+
+EXPORT_SYMBOL(lgh06xf_attach);
+
+MODULE_DESCRIPTION("LG TDVS-H06xF ATSC Tuner support");
+MODULE_AUTHOR("Michael Krufky");
+MODULE_LICENSE("GPL");
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */