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V4L/DVB (9214): si470x: improvement of module device support 

This patch improves support for multiple radio devices.

In previous versions all region relevant settings were derived from one
module parameter. As in future versions, the region and other
configuration should be configurable per device from the user space,
this patch already retrieves all relevant information from the actual
device specific settings.

Signed-off-by: Tobias Lorenz <tobias.lorenz@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Tobias Lorenz 2008-09-24 19:21:50 -03:00 committed by Mauro Carvalho Chehab
parent 374ab68615
commit a17c0019f2
1 changed files with 30 additions and 17 deletions
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47
drivers/media/radio/radio-si470x.c
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@ -667,23 +667,29 @@ static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq)
int retval;
/* Spacing (kHz) */
switch (space) {
switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
/* 0: 200 kHz (USA, Australia) */
case 0 : spacing = 0.200 * FREQ_MUL; break;
case 0:
spacing = 0.200 * FREQ_MUL; break;
/* 1: 100 kHz (Europe, Japan) */
case 1 : spacing = 0.100 * FREQ_MUL; break;
case 1:
spacing = 0.100 * FREQ_MUL; break;
/* 2: 50 kHz */
default: spacing = 0.050 * FREQ_MUL; break;
default:
spacing = 0.050 * FREQ_MUL; break;
};
/* Bottom of Band (MHz) */
switch (band) {
switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe) */
case 0 : band_bottom = 87.5 * FREQ_MUL; break;
case 0:
band_bottom = 87.5 * FREQ_MUL; break;
/* 1: 76 - 108 MHz (Japan wide band) */
default: band_bottom = 76 * FREQ_MUL; break;
default:
band_bottom = 76 * FREQ_MUL; break;
/* 2: 76 - 90 MHz (Japan) */
case 2 : band_bottom = 76 * FREQ_MUL; break;
case 2:
band_bottom = 76 * FREQ_MUL; break;
};
/* read channel */
@ -706,23 +712,29 @@ static int si470x_set_freq(struct si470x_device *radio, unsigned int freq)
unsigned short chan;
/* Spacing (kHz) */
switch (space) {
switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) {
/* 0: 200 kHz (USA, Australia) */
case 0 : spacing = 0.200 * FREQ_MUL; break;
case 0:
spacing = 0.200 * FREQ_MUL; break;
/* 1: 100 kHz (Europe, Japan) */
case 1 : spacing = 0.100 * FREQ_MUL; break;
case 1:
spacing = 0.100 * FREQ_MUL; break;
/* 2: 50 kHz */
default: spacing = 0.050 * FREQ_MUL; break;
default:
spacing = 0.050 * FREQ_MUL; break;
};
/* Bottom of Band (MHz) */
switch (band) {
switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe) */
case 0 : band_bottom = 87.5 * FREQ_MUL; break;
case 0:
band_bottom = 87.5 * FREQ_MUL; break;
/* 1: 76 - 108 MHz (Japan wide band) */
default: band_bottom = 76 * FREQ_MUL; break;
default:
band_bottom = 76 * FREQ_MUL; break;
/* 2: 76 - 90 MHz (Japan) */
case 2 : band_bottom = 76 * FREQ_MUL; break;
case 2:
band_bottom = 76 * FREQ_MUL; break;
};
/* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */
@ -1425,7 +1437,8 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv,
goto done;
strcpy(tuner->name, "FM");
switch (band) {
/* range limits */
switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) {
/* 0: 87.5 - 108 MHz (USA, Europe, default) */
default:
tuner->rangelow = 87.5 * FREQ_MUL;