V4L/DVB (6671): Avoids checking digital/analog at check_firmware

Since check_firmware is called via analog or digital set freq routines, move
type selection to those routines. This avoids having several if's at the code,
and simplifies the source code.

A sideback effect is that implementing radio and other dvb types will become
simpler.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
index 1f14892..94f367a 100644 (file)
--- a/drivers/media/video/tuner-xc2028.c
+++ b/drivers/media/video/tuner-xc2028.c
@@ -608,15 +608,14 @@ static int load_scode(struct dvb_frontend *fe, unsigned int type,
        return 0;
 }
 
-static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode,
-                         v4l2_std_id std, fe_bandwidth_t bandwidth)
+static int check_firmware(struct dvb_frontend *fe, unsigned int type,
+                         v4l2_std_id std)
 {
-       struct xc2028_data      *priv = fe->tuner_priv;
-       int                     rc = 0, is_retry = 0;
-       unsigned int            type = 0;
+       struct xc2028_data         *priv = fe->tuner_priv;
        struct firmware_properties new_fw;
-       u16                     version, hwmodel;
-       v4l2_std_id             std0;
+       int                        rc = 0, is_retry = 0;
+       u16                        version, hwmodel;
+       v4l2_std_id                std0;
 
        tuner_dbg("%s called\n", __FUNCTION__);
 
@@ -633,32 +632,6 @@ static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode,
 
        if (priv->ctrl.mts)
                type |= MTS;
-       if (bandwidth == BANDWIDTH_7_MHZ || bandwidth == BANDWIDTH_8_MHZ)
-               type |= F8MHZ;
-
-       /* FIXME: How to load FM and FM|INPUT1 firmwares? */
-
-       if (new_mode == T_DIGITAL_TV) {
-               if (priv->ctrl.d2633)
-                       type |= D2633;
-               else
-                       type |= D2620;
-
-               switch (bandwidth) {
-               case BANDWIDTH_8_MHZ:
-                       type |= DTV8;
-                       break;
-               case BANDWIDTH_7_MHZ:
-                       type |= DTV7;
-                       break;
-               case BANDWIDTH_6_MHZ:
-                       /* FIXME: Should allow select also ATSC */
-                       type |= DTV6 | QAM;
-                       break;
-               default:
-                       tuner_err("error: bandwidth not supported.\n");
-               };
-       }
 
 retry:
        new_fw.type = type;
@@ -729,10 +702,6 @@ skip_base:
        /* Reloading std-specific firmware forces a SCODE update */
        priv->cur_fw.scode_table = 0;
 
-       /* Add audio hack to std mask */
-       if (new_mode == T_ANALOG_TV)
-               new_fw.id |= parse_audio_std_option();
-
        rc = load_firmware(fe, new_fw.type, &new_fw.id);
        if (rc == -ENOENT)
                rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id);
@@ -840,9 +809,10 @@ ret:
 
 #define DIV 15625
 
-static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
+static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
                               enum tuner_mode new_mode,
-                              v4l2_std_id std, fe_bandwidth_t bandwidth)
+                              unsigned int type,
+                              v4l2_std_id std)
 {
        struct xc2028_data *priv = fe->tuner_priv;
        int                rc = -EINVAL;
@@ -855,7 +825,7 @@ static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
 
        tuner_dbg("should set frequency %d kHz\n", freq / 1000);
 
-       if (check_firmware(fe, new_mode, std, bandwidth) < 0)
+       if (check_firmware(fe, type, std) < 0)
                goto ret;
 
        /* On some cases xc2028 can disable video output, if
@@ -865,10 +835,9 @@ static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
         * that xc2028 will be in a safe state.
         * Maybe this might also be needed for DTV.
         */
-       if (new_mode != T_DIGITAL_TV)
+       if (new_mode == T_ANALOG_TV) {
                rc = send_seq(priv, {0x00, 0x00});
-
-       if (new_mode == T_DIGITAL_TV) {
+       } else {
                offset = 2750000;
                if (priv->cur_fw.type & DTV7)
                        offset -= 500000;
@@ -914,32 +883,35 @@ ret:
        return rc;
 }
 
-static int xc2028_set_tv_freq(struct dvb_frontend *fe,
+static int xc2028_set_analog_freq(struct dvb_frontend *fe,
                              struct analog_parameters *p)
 {
        struct xc2028_data *priv = fe->tuner_priv;
-       fe_bandwidth_t bw;
+       unsigned int       type=0;
+
+       tuner_dbg("%s called\n", __FUNCTION__);
 
        /* if std is not defined, choose one */
        if (!p->std)
                p->std = V4L2_STD_MN;
 
        /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
-       if (p->std & V4L2_STD_MN)
-               bw = BANDWIDTH_6_MHZ;
-       else
-               bw = BANDWIDTH_8_MHZ;
+       if (!(p->std & V4L2_STD_MN))
+               type |= F8MHZ;
 
-       tuner_dbg("%s called\n", __FUNCTION__);
+       /* Add audio hack to std mask */
+       p->std |= parse_audio_std_option();
 
-       return generic_set_tv_freq(fe, 62500l * p->frequency, T_ANALOG_TV,
-                                  p->std, bw);
+       return generic_set_freq(fe, 62500l * p->frequency,
+                               T_ANALOG_TV, type, p->std);
 }
 
 static int xc2028_set_params(struct dvb_frontend *fe,
                             struct dvb_frontend_parameters *p)
 {
        struct xc2028_data *priv = fe->tuner_priv;
+       unsigned int       type=0;
+       fe_bandwidth_t     bw;
 
        tuner_dbg("%s called\n", __FUNCTION__);
 
@@ -948,11 +920,33 @@ static int xc2028_set_params(struct dvb_frontend *fe,
                tuner_err("DTV type not implemented.\n");
                return -EINVAL;
        }
+       bw = p->u.ofdm.bandwidth;
 
-       return generic_set_tv_freq(fe, p->frequency, T_DIGITAL_TV,
-                                  0 /* NOT USED */,
-                                  p->u.ofdm.bandwidth);
+       if (bw == BANDWIDTH_7_MHZ || bw == BANDWIDTH_8_MHZ)
+               type |= F8MHZ;
 
+       if (priv->ctrl.d2633)
+               type |= D2633;
+       else
+               type |= D2620;
+
+       switch (bw) {
+       case BANDWIDTH_8_MHZ:
+               type |= DTV8;
+               break;
+       case BANDWIDTH_7_MHZ:
+               type |= DTV7;
+               break;
+       case BANDWIDTH_6_MHZ:
+               /* FIXME: Should allow select also ATSC */
+               type |= DTV6 | QAM;
+               break;
+       default:
+               tuner_err("error: bandwidth not supported.\n");
+       };
+
+       return generic_set_freq(fe, p->frequency,
+                               T_DIGITAL_TV, type, 0);
 }
 
 static int xc2028_sleep(struct dvb_frontend *fe)
@@ -1052,7 +1046,7 @@ static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
                 },
 
        .set_config        = xc2028_set_config,
-       .set_analog_params = xc2028_set_tv_freq,
+       .set_analog_params = xc2028_set_analog_freq,
        .release           = xc2028_dvb_release,
        .get_frequency     = xc2028_get_frequency,
        .get_rf_strength   = xc2028_signal,