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[media] radio-aztech: Implement signal strength detection and fix stereo detection 

Current stereo detection code is wrong - it reads TUNED bit instead of STEREO bit.
Fix that and implement signal strength detection too.
Also remove useless s_stereo functionn.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Ondrej Zary 2013-07-19 13:46:18 -03:00 committed by Mauro Carvalho Chehab
parent eb27fafef6
commit 1c9f11ed21
1 changed files with 4 additions and 9 deletions
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13
drivers/media/radio/radio-aztech.c
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@ -94,21 +94,16 @@ static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq)
return 0; return 0;
} }
/* thanks to Michael Dwyer for giving me a dose of clues in
* the signal strength department..
*
* This card has a stereo bit - bit 0 set = mono, not set = stereo
*/
static u32 aztech_g_rxsubchans(struct radio_isa_card *isa) static u32 aztech_g_rxsubchans(struct radio_isa_card *isa)
{ {
if (inb(isa->io) & 1) if (inb(isa->io) & AZTECH_BIT_MONO)
return V4L2_TUNER_SUB_MONO; return V4L2_TUNER_SUB_MONO;
return V4L2_TUNER_SUB_STEREO; return V4L2_TUNER_SUB_STEREO;
} }
static int aztech_s_stereo(struct radio_isa_card *isa, bool stereo) static u32 aztech_g_signal(struct radio_isa_card *isa)
{ {
return aztech_s_frequency(isa, isa->freq); return (inb(isa->io) & AZTECH_BIT_NOT_TUNED) ? 0 : 0xffff;
} }
static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
@ -126,8 +121,8 @@ static const struct radio_isa_ops aztech_ops = {
.alloc = aztech_alloc, .alloc = aztech_alloc,
.s_mute_volume = aztech_s_mute_volume, .s_mute_volume = aztech_s_mute_volume,
.s_frequency = aztech_s_frequency, .s_frequency = aztech_s_frequency,
.s_stereo = aztech_s_stereo,
.g_rxsubchans = aztech_g_rxsubchans, .g_rxsubchans = aztech_g_rxsubchans,
.g_signal = aztech_g_signal,
}; };
static const int aztech_ioports[] = { 0x350, 0x358 }; static const int aztech_ioports[] = { 0x350, 0x358 };