From: "istvan_v@mailbox.hu" <istvan_v@mailbox.hu>
To: linux-media@vger.kernel.org
Subject: XC4000: fixed frequency error
Date: Fri, 03 Jun 2011 17:27:30 +0200 [thread overview]
Message-ID: <4DE8FD62.406@mailbox.hu> (raw)
In-Reply-To: <BANLkTimEEGsMP6PDXf5W5p9wW7wdWEEOiA@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 238 bytes --]
The xc_get_frequency_error() function reported the frequency error
incorrectly. The data read from the hardware is a signed integer, in
15625 Hz units. The attached patch fixes the bug.
Signed-off-by: Istvan Varga <istvan_v@mailbox.hu>
[-- Attachment #2: xc4000_freqerr.patch --]
[-- Type: text/x-patch, Size: 552 bytes --]
diff -uNr xc4000_orig/drivers/media/common/tuners/xc4000.c xc4000/drivers/media/common/tuners/xc4000.c
--- xc4000_orig/drivers/media/common/tuners/xc4000.c 2011-06-03 17:09:54.000000000 +0200
+++ xc4000/drivers/media/common/tuners/xc4000.c 2011-06-03 17:14:12.000000000 +0200
@@ -418,8 +418,9 @@
if (result != XC_RESULT_SUCCESS)
return result;
- tmp = (u32)regData;
- (*freq_error_hz) = (tmp * 15625) / 1000;
+ tmp = (u32)regData & 0xFFFFU;
+ tmp = (tmp < 0x8000U ? tmp : 0x10000U - tmp);
+ (*freq_error_hz) = tmp * 15625;
return result;
}
next prev parent reply other threads:[~2011-06-03 15:27 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-08 14:54 [linux-dvb] XC4000 patches for kernel 2.6.37.2 Mirek Slugeň
2011-05-31 2:48 ` Dmitri Belimov
2011-05-31 3:49 ` Devin Heitmueller
2011-05-31 7:43 ` Dmitri Belimov
2011-06-02 10:52 ` Devin Heitmueller
2011-06-02 14:41 ` Mauro Carvalho Chehab
2011-06-02 15:17 ` Devin Heitmueller
2011-06-02 16:35 ` Mauro Carvalho Chehab
2011-06-03 1:41 ` Dmitri Belimov
2011-06-03 12:12 ` Mauro Carvalho Chehab
2011-06-02 15:53 ` Mohammad Bahathir Hashim
2011-06-02 17:05 ` Mauro Carvalho Chehab
2011-06-03 3:54 ` Mohammad Bahathir Hashim
[not found] ` <4DE8D5AC.7060002@mailbox.hu>
2011-06-03 12:46 ` [linux-dvb] XC4000: added card_type Devin Heitmueller
[not found] ` <4DE8DEC6.6080008@mailbox.hu>
2011-06-03 14:00 ` Mauro Carvalho Chehab
2011-06-03 14:22 ` istvan_v
2011-06-03 13:17 ` Mauro Carvalho Chehab
2011-06-03 13:55 ` XC4000: updated standards table istvan_v
2011-06-03 15:17 ` XC4000: added support for 7 MHz DVB-T istvan_v
2011-06-03 15:23 ` XC4000: added mutex istvan_v
2011-06-03 15:27 ` istvan_v [this message]
2011-06-04 14:48 ` XC4000: added firmware_name parameter istvan_v
2011-06-04 14:52 ` XC4000: simplified seek_firmware() istvan_v
2011-06-04 14:56 ` XC4000: simplified load_scode istvan_v
2011-06-04 14:59 ` XC4000: check_firmware() cleanup istvan_v
2011-06-04 15:03 ` XC4000: implemented power management istvan_v
2011-06-04 15:04 ` XC4000: firmware initialization istvan_v
2011-06-04 15:08 ` XC4000: debug message improvements istvan_v
2011-06-04 15:12 ` XC4000: setting registers istvan_v
2011-06-05 12:05 ` Mauro Carvalho Chehab
2011-06-05 12:28 ` Istvan Varga
2011-06-05 12:56 ` Mauro Carvalho Chehab
2011-06-05 14:30 ` Istvan Varga
2011-06-04 15:15 ` XC4000: added audio_std module parameter istvan_v
2011-06-04 15:17 ` XC4000: implemented analog TV and radio istvan_v
2011-06-04 15:18 ` XC4000: xc_tune_channel() cleanup istvan_v
2011-06-04 15:21 ` XC4000: removed redundant tuner reset istvan_v
2011-06-04 15:25 ` XC4000: detect XC4100 istvan_v
2011-06-02 4:58 ` [linux-dvb] XC4000 patches for kernel 2.6.37.2 Mohammad Bahathir Hashim
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