V4L/DVB (13075): xc5000: add FM radio support

Add FM radio for the xc5000 silicon tuner chip.

Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/common/tuners/xc5000.c b/drivers/media/common/tuners/xc5000.c
index f4ffcdc9b848919c5953372375eedacabb0210b6..fc7cb74256d0190232c961d32d771dbf2a2d7591 100644 (file)
--- a/drivers/media/common/tuners/xc5000.c
+++ b/drivers/media/common/tuners/xc5000.c
@@ -739,15 +739,12 @@ static int xc5000_is_firmware_loaded(struct dvb_frontend *fe)
        return ret;
 }
 
-static int xc5000_set_analog_params(struct dvb_frontend *fe,
+static int xc5000_set_tv_freq(struct dvb_frontend *fe,
        struct analog_parameters *params)
 {
        struct xc5000_priv *priv = fe->tuner_priv;
        int ret;
 
-       if (xc5000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS)
-               xc_load_fw_and_init_tuner(fe);
-
        dprintk(1, "%s() frequency=%d (in units of 62.5khz)\n",
                __func__, params->frequency);
 
@@ -827,6 +824,67 @@ tune_channel:
        return 0;
 }
 
+static int xc5000_set_radio_freq(struct dvb_frontend *fe,
+       struct analog_parameters *params)
+{
+       struct xc5000_priv *priv = fe->tuner_priv;
+       int ret = -EINVAL;
+
+       dprintk(1, "%s() frequency=%d (in units of khz)\n",
+               __func__, params->frequency);
+
+       priv->freq_hz = params->frequency * 125 / 2;
+
+       priv->rf_mode = XC_RF_MODE_AIR;
+
+       ret = xc_SetTVStandard(priv,
+               XC5000_Standard[FM_Radio_INPUT1].VideoMode,
+               XC5000_Standard[FM_Radio_INPUT1].AudioMode);
+
+       if (ret != XC_RESULT_SUCCESS) {
+               printk(KERN_ERR "xc5000: xc_SetTVStandard failed\n");
+               return -EREMOTEIO;
+       }
+
+       ret = xc_SetSignalSource(priv, priv->rf_mode);
+       if (ret != XC_RESULT_SUCCESS) {
+               printk(KERN_ERR
+                       "xc5000: xc_SetSignalSource(%d) failed\n",
+                       priv->rf_mode);
+               return -EREMOTEIO;
+       }
+
+       xc_tune_channel(priv, priv->freq_hz, XC_TUNE_ANALOG);
+
+       return 0;
+}
+
+static int xc5000_set_analog_params(struct dvb_frontend *fe,
+                            struct analog_parameters *params)
+{
+       struct xc5000_priv *priv = fe->tuner_priv;
+       int ret = -EINVAL;
+
+       if (priv->i2c_props.adap == NULL)
+               return -EINVAL;
+
+       if (xc5000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS)
+               xc_load_fw_and_init_tuner(fe);
+
+       switch (params->mode) {
+       case V4L2_TUNER_RADIO:
+               ret = xc5000_set_radio_freq(fe, params);
+               break;
+       case V4L2_TUNER_ANALOG_TV:
+       case V4L2_TUNER_DIGITAL_TV:
+               ret = xc5000_set_tv_freq(fe, params);
+               break;
+       }
+
+       return ret;
+}
+
+
 static int xc5000_get_frequency(struct dvb_frontend *fe, u32 *freq)
 {
        struct xc5000_priv *priv = fe->tuner_priv;