From f7a3b4dfa32f008ba25a84e332eeace8d35cff42 Mon Sep 17 00:00:00 2001 From: Szymon Dziok Date: Tue, 12 Jan 2016 00:03:22 +0100 Subject: Radio support and detection for Samsung YH92X [FOR TESTING]. Status: - tested on: Samsung YH920 - it uses this detection too, it always should have the radio. Samsung YH925 with the radio. - untested on: Samsung YH925 without the radio. Change-Id: I68b39c09d6b7e26a4c373fbd8bf9401a97e86123 --- firmware/drivers/tuner/tea5767.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) (limited to 'firmware/drivers') diff --git a/firmware/drivers/tuner/tea5767.c b/firmware/drivers/tuner/tea5767.c index a502e79802..143cb0576b 100644 --- a/firmware/drivers/tuner/tea5767.c +++ b/firmware/drivers/tuner/tea5767.c @@ -171,17 +171,26 @@ int tea5767_get(int setting) void tea5767_init(void) { /* save binsize by only detecting presence for targets where it may be absent */ -#if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330) +#if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330) ||\ + defined(SAMSUNG_YH920) || defined(SAMSUNG_YH925) unsigned char buf[5]; unsigned char chipid; - /* init chipid register with 0xFF in case fmradio_i2c_read fails silently */ - buf[3] = 0xFF; tuner_power(true); #if defined(CONFIG_TUNER_3WIRE) + /* We don't have any control over the bus protocol, the only way to detect + presence of the tuner is to write something to it and then read bytes */ + tea5767_set(RADIO_MUTE, 1); int res = fmradio_3wire_read(buf); + res = ((buf[0] == 0) && (buf[1] == 0) && (buf[2] == 0) && (buf[3] == 0) + && (buf[4] == 0) && (buf[5] == 0)) ? -1 : 1; + /* clear chipid byte - we don't use it here for detection, so it should be */ + /* set to zero, to fulfill the condition in "else" block */ + buf[3] = 0; #else + /* init chipid register with 0xFF in case fmradio_i2c_read fails silently */ + buf[3] = 0xFF; int res = fmradio_i2c_read(I2C_ADR, buf, sizeof(buf)); #endif -- cgit v1.2.3