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Optimized the gx1503 module

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Davin622
2025-03-17 15:33:06 +08:00
parent 197f7e3315
commit 0639a85adc
3 changed files with 45 additions and 14 deletions
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55
drivers/media/dvb-frontends/gx1503.c
View File

@@ -284,15 +284,14 @@ static int gx1503_set_frontend(struct dvb_frontend *fe)
temp = temp &0xbf;
regmap_write(dev->regmap,0xd0,temp);
regmap_write(dev->regmap,GX1503B_CFG_TS_0,0x10);
regmap_write(dev->regmap,GX1503B_CFG_TS_2,0x32);
regmap_write(dev->regmap,GX1503B_CFG_TS_4,0x54);
regmap_write(dev->regmap,GX1503B_CFG_TS_6,0x76);
regmap_write(dev->regmap,GX1503B_CFG_TS_8,0x9A);
regmap_write(dev->regmap,GX1503B_CFG_TS_A,0x8B);
if(dev->ts_config!=1){
regmap_write(dev->regmap,GX1503B_CFG_TS_0,0x10);
regmap_write(dev->regmap,GX1503B_CFG_TS_2,0x32);
regmap_write(dev->regmap,GX1503B_CFG_TS_4,0x54);
regmap_write(dev->regmap,GX1503B_CFG_TS_6,0x76);
regmap_write(dev->regmap,GX1503B_CFG_TS_8,0x9A);
regmap_write(dev->regmap,GX1503B_CFG_TS_A,0x8B);
}
//Open sdram port
GX1503_WriteRegWithMask(client,0x0A,0,1,1 );
@@ -362,6 +361,7 @@ err:
static int gx1503_read_snr(struct dvb_frontend * fe,u16 * snr)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct i2c_client *client = fe->demodulator_priv;
struct gx1503_dev *dev = i2c_get_clientdata(client);
unsigned int Hl,Hh;
@@ -392,13 +392,40 @@ static int gx1503_read_snr(struct dvb_frontend * fe,u16 * snr)
log_data = H_pow * 2048 / gi_len[gi_mode] * 64 / Noise_pow ;
SNR = GX1503_100Log(log_data)/10 - snr_mod[gi_mode] - 10;
if(SNR <= 0)
SNR = 0;
*snr = SNR;
c->cnr.len = 2;
c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
c->cnr.stat[0].svalue = (s64)SNR*250;
c->cnr.stat[1].scale = FE_SCALE_RELATIVE;
c->cnr.stat[1].uvalue = (s64)SNR*328;
*snr = c->cnr.stat[1].uvalue;
return 0;
}
static int gx1503_read_strength(struct dvb_frontend*fe, u16 *strength)
{
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int i = 0;
*strength = 0;
if(fe->ops.tuner_ops.get_rf_strength)
fe->ops.tuner_ops.get_rf_strength(fe,strength);
else{
for(i = 0;i<c->strength.len;i++)
{
if (c->strength.stat[i].scale == FE_SCALE_RELATIVE)
*strength = (u16)c->strength.stat[i].uvalue;
else if (c->strength.stat[i].scale == FE_SCALE_DECIBEL)
*strength = ((100000 + (s32)c->strength.stat[i].svalue)/1000) * 656;
}
}
return 0;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 7, 0)
static int gx1503_select(struct i2c_mux_core *muxc,u32 chan)
@@ -451,7 +478,7 @@ static const struct dvb_frontend_ops gx1503_ops = {
.delsys = {SYS_DVBT},
.info = {
.name = "NationalChip gx1503",
.frequency_min_hz = 474 * MHz,
.frequency_min_hz = 100 * MHz,
.frequency_max_hz = 858 * MHz,
.frequency_stepsize_hz = 10 * kHz,
.caps =
@@ -464,6 +491,7 @@ static const struct dvb_frontend_ops gx1503_ops = {
.init = gx1503_init,
.set_frontend = gx1503_set_frontend,
.read_status = gx1503_read_status,
.read_signal_strength = gx1503_read_strength,
.read_snr = gx1503_read_snr,
};
@@ -537,6 +565,7 @@ static int gx1503_probe(struct i2c_client *client)
dev->fe.demodulator_priv = client;
*cfg->fe = &dev->fe;
dev->ts_mode = cfg->ts_mode;
dev->ts_config = cfg->ts_config;
dev->clk_freq = cfg->clk_freq;
dev->fw_loaded = false;
dev->active = false;
@@ -587,6 +616,6 @@ static struct i2c_driver gx1503_driver = {
module_i2c_driver(gx1503_driver);
MODULE_AUTHOR("Davin<smiledavin@gmail.com>");
MODULE_AUTHOR("Davin<Davin@tbsdtv.com>");
MODULE_DESCRIPTION("gx1503 DTMB(GB20600-2006) driver");
MODULE_LICENSE("GPL");

1
drivers/media/dvb-frontends/gx1503.h
View File

@@ -10,6 +10,7 @@ struct gx1503_config{
struct i2c_adapter **i2c_adapter;
int ts_mode; // 0 :serial 1:parallel
int ts_config;
u16 i2c_wr_max;

3
drivers/media/dvb-frontends/gx1503_priv.h
View File

@@ -20,7 +20,8 @@ struct gx1503_dev {
u16 i2c_wr_max;
struct dvb_frontend fe;
int ts_mode;
int ts_mode;
int ts_config;
int clk_freq;
bool fw_loaded;
bool active;