A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-08 12:58:12 -04:00
Code Issues Projects Releases Packages Wiki Activity

FM: Reduce high scan time

Browse source 
Changed logic to find Lower Band Limit from Search Up from current
channel with Wrap enable to tuning to Lower Band Limit + chan space
and Search Down with Wrap disable.

Change-Id: I79a686238d96db5dd5df9436b346b465435ae4f5
Signed-off-by: Prateek Raj Singh <pratsing@codeaurora.org>
This commit is contained in:
Prateek Raj Singh 2021-06-10 13:45:46 +05:30 • committed by Gerrit - the friendly Code Review server
commit 398c89ff03
2 changed files with 28 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

32
drivers/media/radio/rtc6226/radio-rtc6226-common.c
View file

@ -312,6 +312,7 @@ void rtc6226_scan(struct work_struct *work)
struct kfifo *data_b;
int len = 0;
u32 next_freq_khz;
u8 factor;
int retval = 0;
int i, rssi;
@ -427,7 +428,26 @@ void rtc6226_scan(struct work_struct *work)
TUNE_STEP_SIZE) == next_freq_khz) {
FMDERR("%s Seek one more time if lower freq is valid\n",
__func__);
retval = rtc6226_set_seek(radio, SRCH_UP, WRAP_ENABLE);
// Tuned to band low limit + chan spacing then seek down with
// bandlimit config
if (radio->space == 0)
factor = 20;
else if (radio->space == 1)
factor = 10;
else
factor = 5;
retval = rtc6226_set_freq(radio,
(radio->recv_conf.band_low_limit + factor) * TUNE_STEP_SIZE);
if (retval < 0)
goto seek_tune_fail;
/* wait for tune to complete. */
if (!wait_for_completion_timeout(&radio->completion,
msecs_to_jiffies(TUNE_TIMEOUT_MSEC))) {
FMDERR("In %s, didn't receive STC for tune\n", __func__);
rtc6226_q_event(radio, RTC6226_EVT_ERROR);
return;
}
retval = rtc6226_set_seek(radio, SRCH_DOWN, WRAP_DISABLE);
if (retval < 0) {
FMDERR("%s seek fail %d\n", __func__, retval);
goto seek_tune_fail;
@ -454,10 +474,12 @@ void rtc6226_scan(struct work_struct *work)
rssi = radio->registers[RSSI] & RSSI_RSSI;
FMDBG("%s freq %d, rssi %d rssi threshold %d\n",
__func__, next_freq_khz, rssi, radio->rssi_th);
if ((radio->recv_conf.band_low_limit *
TUNE_STEP_SIZE) ==
next_freq_khz &&
rssi >= radio->rssi_th) {
// Reach to band low limit,
// if SF is 0, means frequency at low limit is a commercial
// station Or a invalid channel
if (((radio->registers[STATUS] & STATUS_SF) == 0) ||
(radio->recv_conf.band_high_limit *
TUNE_STEP_SIZE) == next_freq_khz) {
FMDERR("lower band freq is valid\n");
rtc6226_q_event(radio,
RTC6226_EVT_TUNE_SUCC);

2
drivers/media/radio/rtc6226/radio-rtc6226.h
View file

@ -200,7 +200,7 @@
#define SCAN_PENDING 3
#define START_SCAN 1
#define TUNE_TIMEOUT_MSEC 3000
#define SEEK_TIMEOUT_MSEC 15000
#define SEEK_TIMEOUT_MSEC 30000
#define RTC6226_MIN_SRCH_MODE 0x00
#define RTC6226_MAX_SRCH_MODE 0x02