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Diffstat (limited to 'hardware/src/r820/src/tuner_fc2580.c')
-rw-r--r--hardware/src/r820/src/tuner_fc2580.c494
1 files changed, 494 insertions, 0 deletions
diff --git a/hardware/src/r820/src/tuner_fc2580.c b/hardware/src/r820/src/tuner_fc2580.c
new file mode 100644
index 0000000..d2eeba5
--- /dev/null
+++ b/hardware/src/r820/src/tuner_fc2580.c
@@ -0,0 +1,494 @@
+/*
+ * FCI FC2580 tuner driver, taken from the kernel driver that can be found
+ * on http://linux.terratec.de/tv_en.html
+ *
+ * This driver is a mess, and should be cleaned up/rewritten.
+ *
+ */
+
+#include <stdint.h>
+
+#include "rtlsdr_i2c.h"
+#include "tuner_fc2580.h"
+
+/* 16.384 MHz (at least on the Logilink VG0002A) */
+#define CRYSTAL_FREQ 16384000
+
+/* glue functions to rtl-sdr code */
+
+fc2580_fci_result_type fc2580_i2c_write(void *pTuner, unsigned char reg, unsigned char val)
+{
+ uint8_t data[2];
+
+ data[0] = reg;
+ data[1] = val;
+
+ if (rtlsdr_i2c_write_fn(pTuner, FC2580_I2C_ADDR, data, 2) < 0)
+ return FC2580_FCI_FAIL;
+
+ return FC2580_FCI_SUCCESS;
+}
+
+fc2580_fci_result_type fc2580_i2c_read(void *pTuner, unsigned char reg, unsigned char *read_data)
+{
+ uint8_t data = reg;
+
+ if (rtlsdr_i2c_write_fn(pTuner, FC2580_I2C_ADDR, &data, 1) < 0)
+ return FC2580_FCI_FAIL;
+
+ if (rtlsdr_i2c_read_fn(pTuner, FC2580_I2C_ADDR, &data, 1) < 0)
+ return FC2580_FCI_FAIL;
+
+ *read_data = data;
+
+ return FC2580_FCI_SUCCESS;
+}
+
+int
+fc2580_Initialize(
+ void *pTuner
+ )
+{
+ int AgcMode;
+ unsigned int CrystalFreqKhz;
+
+ //TODO set AGC mode
+ AgcMode = FC2580_AGC_EXTERNAL;
+
+ // Initialize tuner with AGC mode.
+ // Note: CrystalFreqKhz = round(CrystalFreqHz / 1000)
+ CrystalFreqKhz = (unsigned int)((CRYSTAL_FREQ + 500) / 1000);
+
+ if(fc2580_set_init(pTuner, AgcMode, CrystalFreqKhz) != FC2580_FCI_SUCCESS)
+ goto error_status_initialize_tuner;
+
+
+ return FUNCTION_SUCCESS;
+
+
+error_status_initialize_tuner:
+ return FUNCTION_ERROR;
+}
+
+int
+fc2580_SetRfFreqHz(
+ void *pTuner,
+ unsigned long RfFreqHz
+ )
+{
+ unsigned int RfFreqKhz;
+ unsigned int CrystalFreqKhz;
+
+ // Set tuner RF frequency in KHz.
+ // Note: RfFreqKhz = round(RfFreqHz / 1000)
+ // CrystalFreqKhz = round(CrystalFreqHz / 1000)
+ RfFreqKhz = (unsigned int)((RfFreqHz + 500) / 1000);
+ CrystalFreqKhz = (unsigned int)((CRYSTAL_FREQ + 500) / 1000);
+
+ if(fc2580_set_freq(pTuner, RfFreqKhz, CrystalFreqKhz) != FC2580_FCI_SUCCESS)
+ goto error_status_set_tuner_rf_frequency;
+
+ return FUNCTION_SUCCESS;
+
+error_status_set_tuner_rf_frequency:
+ return FUNCTION_ERROR;
+}
+
+/**
+
+@brief Set FC2580 tuner bandwidth mode.
+
+*/
+int
+fc2580_SetBandwidthMode(
+ void *pTuner,
+ int BandwidthMode
+ )
+{
+ unsigned int CrystalFreqKhz;
+
+ // Set tuner bandwidth mode.
+ // Note: CrystalFreqKhz = round(CrystalFreqHz / 1000)
+ CrystalFreqKhz = (unsigned int)((CRYSTAL_FREQ + 500) / 1000);
+
+ if(fc2580_set_filter(pTuner, (unsigned char)BandwidthMode, CrystalFreqKhz) != FC2580_FCI_SUCCESS)
+ goto error_status_set_tuner_bandwidth_mode;
+
+ return FUNCTION_SUCCESS;
+
+
+error_status_set_tuner_bandwidth_mode:
+ return FUNCTION_ERROR;
+}
+
+void fc2580_wait_msec(void *pTuner, int a)
+{
+ /* USB latency is enough for now ;) */
+// usleep(a * 1000);
+ return;
+}
+
+/*==============================================================================
+ fc2580 initial setting
+
+ This function is a generic function which gets called to initialize
+
+ fc2580 in DVB-H mode or L-Band TDMB mode
+
+ <input parameter>
+
+ ifagc_mode
+ type : integer
+ 1 : Internal AGC
+ 2 : Voltage Control Mode
+
+==============================================================================*/
+fc2580_fci_result_type fc2580_set_init( void *pTuner, int ifagc_mode, unsigned int freq_xtal )
+{
+ fc2580_fci_result_type result = FC2580_FCI_SUCCESS;
+
+ result &= fc2580_i2c_write(pTuner, 0x00, 0x00); /*** Confidential ***/
+ result &= fc2580_i2c_write(pTuner, 0x12, 0x86);
+ result &= fc2580_i2c_write(pTuner, 0x14, 0x5C);
+ result &= fc2580_i2c_write(pTuner, 0x16, 0x3C);
+ result &= fc2580_i2c_write(pTuner, 0x1F, 0xD2);
+ result &= fc2580_i2c_write(pTuner, 0x09, 0xD7);
+ result &= fc2580_i2c_write(pTuner, 0x0B, 0xD5);
+ result &= fc2580_i2c_write(pTuner, 0x0C, 0x32);
+ result &= fc2580_i2c_write(pTuner, 0x0E, 0x43);
+ result &= fc2580_i2c_write(pTuner, 0x21, 0x0A);
+ result &= fc2580_i2c_write(pTuner, 0x22, 0x82);
+ if( ifagc_mode == 1 )
+ {
+ result &= fc2580_i2c_write(pTuner, 0x45, 0x10); //internal AGC
+ result &= fc2580_i2c_write(pTuner, 0x4C, 0x00); //HOLD_AGC polarity
+ }
+ else if( ifagc_mode == 2 )
+ {
+ result &= fc2580_i2c_write(pTuner, 0x45, 0x20); //Voltage Control Mode
+ result &= fc2580_i2c_write(pTuner, 0x4C, 0x02); //HOLD_AGC polarity
+ }
+ result &= fc2580_i2c_write(pTuner, 0x3F, 0x88);
+ result &= fc2580_i2c_write(pTuner, 0x02, 0x0E);
+ result &= fc2580_i2c_write(pTuner, 0x58, 0x14);
+ result &= fc2580_set_filter(pTuner, 8, freq_xtal); //BW = 7.8MHz
+
+ return result;
+}
+
+
+/*==============================================================================
+ fc2580 frequency setting
+
+ This function is a generic function which gets called to change LO Frequency
+
+ of fc2580 in DVB-H mode or L-Band TDMB mode
+
+ <input parameter>
+ freq_xtal: kHz
+
+ f_lo
+ Value of target LO Frequency in 'kHz' unit
+ ex) 2.6GHz = 2600000
+
+==============================================================================*/
+fc2580_fci_result_type fc2580_set_freq( void *pTuner, unsigned int f_lo, unsigned int freq_xtal )
+{
+ unsigned int f_diff, f_diff_shifted, n_val, k_val;
+ unsigned int f_vco, r_val, f_comp;
+ unsigned char pre_shift_bits = 4;// number of preshift to prevent overflow in shifting f_diff to f_diff_shifted
+ unsigned char data_0x18;
+ unsigned char data_0x02 = (USE_EXT_CLK<<5)|0x0E;
+
+ fc2580_band_type band = ( f_lo > 1000000 )? FC2580_L_BAND : ( f_lo > 400000 )? FC2580_UHF_BAND : FC2580_VHF_BAND;
+
+ fc2580_fci_result_type result = FC2580_FCI_SUCCESS;
+
+ f_vco = ( band == FC2580_UHF_BAND )? f_lo * 4 : (( band == FC2580_L_BAND )? f_lo * 2 : f_lo * 12);
+ r_val = ( f_vco >= 2*76*freq_xtal )? 1 : ( f_vco >= 76*freq_xtal )? 2 : 4;
+ f_comp = freq_xtal/r_val;
+ n_val = ( f_vco / 2 ) / f_comp;
+
+ f_diff = f_vco - 2* f_comp * n_val;
+ f_diff_shifted = f_diff << ( 20 - pre_shift_bits );
+ k_val = f_diff_shifted / ( ( 2* f_comp ) >> pre_shift_bits );
+
+ if( f_diff_shifted - k_val * ( ( 2* f_comp ) >> pre_shift_bits ) >= ( f_comp >> pre_shift_bits ) )
+ k_val = k_val + 1;
+
+ if( f_vco >= BORDER_FREQ ) //Select VCO Band
+ data_0x02 = data_0x02 | 0x08; //0x02[3] = 1;
+ else
+ data_0x02 = data_0x02 & 0xF7; //0x02[3] = 0;
+
+// if( band != curr_band ) {
+ switch(band)
+ {
+ case FC2580_UHF_BAND:
+ data_0x02 = (data_0x02 & 0x3F);
+
+ result &= fc2580_i2c_write(pTuner, 0x25, 0xF0);
+ result &= fc2580_i2c_write(pTuner, 0x27, 0x77);
+ result &= fc2580_i2c_write(pTuner, 0x28, 0x53);
+ result &= fc2580_i2c_write(pTuner, 0x29, 0x60);
+ result &= fc2580_i2c_write(pTuner, 0x30, 0x09);
+ result &= fc2580_i2c_write(pTuner, 0x50, 0x8C);
+ result &= fc2580_i2c_write(pTuner, 0x53, 0x50);
+
+ if( f_lo < 538000 )
+ result &= fc2580_i2c_write(pTuner, 0x5F, 0x13);
+ else
+ result &= fc2580_i2c_write(pTuner, 0x5F, 0x15);
+
+ if( f_lo < 538000 )
+ {
+ result &= fc2580_i2c_write(pTuner, 0x61, 0x07);
+ result &= fc2580_i2c_write(pTuner, 0x62, 0x06);
+ result &= fc2580_i2c_write(pTuner, 0x67, 0x06);
+ result &= fc2580_i2c_write(pTuner, 0x68, 0x08);
+ result &= fc2580_i2c_write(pTuner, 0x69, 0x10);
+ result &= fc2580_i2c_write(pTuner, 0x6A, 0x12);
+ }
+ else if( f_lo < 794000 )
+ {
+ result &= fc2580_i2c_write(pTuner, 0x61, 0x03);
+ result &= fc2580_i2c_write(pTuner, 0x62, 0x03);
+ result &= fc2580_i2c_write(pTuner, 0x67, 0x03); //ACI improve
+ result &= fc2580_i2c_write(pTuner, 0x68, 0x05); //ACI improve
+ result &= fc2580_i2c_write(pTuner, 0x69, 0x0C);
+ result &= fc2580_i2c_write(pTuner, 0x6A, 0x0E);
+ }
+ else
+ {
+ result &= fc2580_i2c_write(pTuner, 0x61, 0x07);
+ result &= fc2580_i2c_write(pTuner, 0x62, 0x06);
+ result &= fc2580_i2c_write(pTuner, 0x67, 0x07);
+ result &= fc2580_i2c_write(pTuner, 0x68, 0x09);
+ result &= fc2580_i2c_write(pTuner, 0x69, 0x10);
+ result &= fc2580_i2c_write(pTuner, 0x6A, 0x12);
+ }
+
+ result &= fc2580_i2c_write(pTuner, 0x63, 0x15);
+
+ result &= fc2580_i2c_write(pTuner, 0x6B, 0x0B);
+ result &= fc2580_i2c_write(pTuner, 0x6C, 0x0C);
+ result &= fc2580_i2c_write(pTuner, 0x6D, 0x78);
+ result &= fc2580_i2c_write(pTuner, 0x6E, 0x32);
+ result &= fc2580_i2c_write(pTuner, 0x6F, 0x14);
+ result &= fc2580_set_filter(pTuner, 8, freq_xtal); //BW = 7.8MHz
+ break;
+ case FC2580_VHF_BAND:
+ data_0x02 = (data_0x02 & 0x3F) | 0x80;
+ result &= fc2580_i2c_write(pTuner, 0x27, 0x77);
+ result &= fc2580_i2c_write(pTuner, 0x28, 0x33);
+ result &= fc2580_i2c_write(pTuner, 0x29, 0x40);
+ result &= fc2580_i2c_write(pTuner, 0x30, 0x09);
+ result &= fc2580_i2c_write(pTuner, 0x50, 0x8C);
+ result &= fc2580_i2c_write(pTuner, 0x53, 0x50);
+ result &= fc2580_i2c_write(pTuner, 0x5F, 0x0F);
+ result &= fc2580_i2c_write(pTuner, 0x61, 0x07);
+ result &= fc2580_i2c_write(pTuner, 0x62, 0x00);
+ result &= fc2580_i2c_write(pTuner, 0x63, 0x15);
+ result &= fc2580_i2c_write(pTuner, 0x67, 0x03);
+ result &= fc2580_i2c_write(pTuner, 0x68, 0x05);
+ result &= fc2580_i2c_write(pTuner, 0x69, 0x10);
+ result &= fc2580_i2c_write(pTuner, 0x6A, 0x12);
+ result &= fc2580_i2c_write(pTuner, 0x6B, 0x08);
+ result &= fc2580_i2c_write(pTuner, 0x6C, 0x0A);
+ result &= fc2580_i2c_write(pTuner, 0x6D, 0x78);
+ result &= fc2580_i2c_write(pTuner, 0x6E, 0x32);
+ result &= fc2580_i2c_write(pTuner, 0x6F, 0x54);
+ result &= fc2580_set_filter(pTuner, 7, freq_xtal); //BW = 6.8MHz
+ break;
+ case FC2580_L_BAND:
+ data_0x02 = (data_0x02 & 0x3F) | 0x40;
+ result &= fc2580_i2c_write(pTuner, 0x2B, 0x70);
+ result &= fc2580_i2c_write(pTuner, 0x2C, 0x37);
+ result &= fc2580_i2c_write(pTuner, 0x2D, 0xE7);
+ result &= fc2580_i2c_write(pTuner, 0x30, 0x09);
+ result &= fc2580_i2c_write(pTuner, 0x44, 0x20);
+ result &= fc2580_i2c_write(pTuner, 0x50, 0x8C);
+ result &= fc2580_i2c_write(pTuner, 0x53, 0x50);
+ result &= fc2580_i2c_write(pTuner, 0x5F, 0x0F);
+ result &= fc2580_i2c_write(pTuner, 0x61, 0x0F);
+ result &= fc2580_i2c_write(pTuner, 0x62, 0x00);
+ result &= fc2580_i2c_write(pTuner, 0x63, 0x13);
+ result &= fc2580_i2c_write(pTuner, 0x67, 0x00);
+ result &= fc2580_i2c_write(pTuner, 0x68, 0x02);
+ result &= fc2580_i2c_write(pTuner, 0x69, 0x0C);
+ result &= fc2580_i2c_write(pTuner, 0x6A, 0x0E);
+ result &= fc2580_i2c_write(pTuner, 0x6B, 0x08);
+ result &= fc2580_i2c_write(pTuner, 0x6C, 0x0A);
+ result &= fc2580_i2c_write(pTuner, 0x6D, 0xA0);
+ result &= fc2580_i2c_write(pTuner, 0x6E, 0x50);
+ result &= fc2580_i2c_write(pTuner, 0x6F, 0x14);
+ result &= fc2580_set_filter(pTuner, 1, freq_xtal); //BW = 1.53MHz
+ break;
+ default:
+ break;
+ }
+// curr_band = band;
+// }
+
+ //A command about AGC clock's pre-divide ratio
+ if( freq_xtal >= 28000 )
+ result &= fc2580_i2c_write(pTuner, 0x4B, 0x22 );
+
+ //Commands about VCO Band and PLL setting.
+ result &= fc2580_i2c_write(pTuner, 0x02, data_0x02);
+ data_0x18 = ( ( r_val == 1 )? 0x00 : ( ( r_val == 2 )? 0x10 : 0x20 ) ) + (unsigned char)(k_val >> 16);
+ result &= fc2580_i2c_write(pTuner, 0x18, data_0x18); //Load 'R' value and high part of 'K' values
+ result &= fc2580_i2c_write(pTuner, 0x1A, (unsigned char)( k_val >> 8 ) ); //Load middle part of 'K' value
+ result &= fc2580_i2c_write(pTuner, 0x1B, (unsigned char)( k_val ) ); //Load lower part of 'K' value
+ result &= fc2580_i2c_write(pTuner, 0x1C, (unsigned char)( n_val ) ); //Load 'N' value
+
+ //A command about UHF LNA Load Cap
+ if( band == FC2580_UHF_BAND )
+ result &= fc2580_i2c_write(pTuner, 0x2D, ( f_lo <= (unsigned int)794000 )? 0x9F : 0x8F ); //LNA_OUT_CAP
+
+
+ return result;
+}
+
+
+/*==============================================================================
+ fc2580 filter BW setting
+
+ This function is a generic function which gets called to change Bandwidth
+
+ frequency of fc2580's channel selection filter
+
+ <input parameter>
+ freq_xtal: kHz
+
+ filter_bw
+ 1 : 1.53MHz(TDMB)
+ 6 : 6MHz (Bandwidth 6MHz)
+ 7 : 6.8MHz (Bandwidth 7MHz)
+ 8 : 7.8MHz (Bandwidth 8MHz)
+
+
+==============================================================================*/
+fc2580_fci_result_type fc2580_set_filter( void *pTuner, unsigned char filter_bw, unsigned int freq_xtal )
+{
+ unsigned char cal_mon = 0, i;
+ fc2580_fci_result_type result = FC2580_FCI_SUCCESS;
+
+ if(filter_bw == 1)
+ {
+ result &= fc2580_i2c_write(pTuner, 0x36, 0x1C);
+ result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(4151*freq_xtal/1000000) );
+ result &= fc2580_i2c_write(pTuner, 0x39, 0x00);
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
+ }
+ if(filter_bw == 6)
+ {
+ result &= fc2580_i2c_write(pTuner, 0x36, 0x18);
+ result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(4400*freq_xtal/1000000) );
+ result &= fc2580_i2c_write(pTuner, 0x39, 0x00);
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
+ }
+ else if(filter_bw == 7)
+ {
+ result &= fc2580_i2c_write(pTuner, 0x36, 0x18);
+ result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(3910*freq_xtal/1000000) );
+ result &= fc2580_i2c_write(pTuner, 0x39, 0x80);
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
+ }
+ else if(filter_bw == 8)
+ {
+ result &= fc2580_i2c_write(pTuner, 0x36, 0x18);
+ result &= fc2580_i2c_write(pTuner, 0x37, (unsigned char)(3300*freq_xtal/1000000) );
+ result &= fc2580_i2c_write(pTuner, 0x39, 0x80);
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
+ }
+
+
+ for(i=0; i<5; i++)
+ {
+ fc2580_wait_msec(pTuner, 5);//wait 5ms
+ result &= fc2580_i2c_read(pTuner, 0x2F, &cal_mon);
+ if( (cal_mon & 0xC0) != 0xC0)
+ {
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x01);
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x09);
+ }
+ else
+ break;
+ }
+
+ result &= fc2580_i2c_write(pTuner, 0x2E, 0x01);
+
+ return result;
+}
+
+/*==============================================================================
+ fc2580 RSSI function
+
+ This function is a generic function which returns fc2580's
+
+ current RSSI value.
+
+ <input parameter>
+ none
+
+ <return value>
+ int
+ rssi : estimated input power.
+
+==============================================================================*/
+//int fc2580_get_rssi(void) {
+//
+// unsigned char s_lna, s_rfvga, s_cfs, s_ifvga;
+// int ofs_lna, ofs_rfvga, ofs_csf, ofs_ifvga, rssi;
+//
+// fc2580_i2c_read(0x71, &s_lna );
+// fc2580_i2c_read(0x72, &s_rfvga );
+// fc2580_i2c_read(0x73, &s_cfs );
+// fc2580_i2c_read(0x74, &s_ifvga );
+//
+//
+// ofs_lna =
+// (curr_band==FC2580_UHF_BAND)?
+// (s_lna==0)? 0 :
+// (s_lna==1)? -6 :
+// (s_lna==2)? -17 :
+// (s_lna==3)? -22 : -30 :
+// (curr_band==FC2580_VHF_BAND)?
+// (s_lna==0)? 0 :
+// (s_lna==1)? -6 :
+// (s_lna==2)? -19 :
+// (s_lna==3)? -24 : -32 :
+// (curr_band==FC2580_L_BAND)?
+// (s_lna==0)? 0 :
+// (s_lna==1)? -6 :
+// (s_lna==2)? -11 :
+// (s_lna==3)? -16 : -34 :
+// 0;//FC2580_NO_BAND
+// ofs_rfvga = -s_rfvga+((s_rfvga>=11)? 1 : 0) + ((s_rfvga>=18)? 1 : 0);
+// ofs_csf = -6*s_cfs;
+// ofs_ifvga = s_ifvga/4;
+//
+// return rssi = ofs_lna+ofs_rfvga+ofs_csf+ofs_ifvga+OFS_RSSI;
+//
+//}
+
+/*==============================================================================
+ fc2580 Xtal frequency Setting
+
+ This function is a generic function which sets
+
+ the frequency of xtal.
+
+ <input parameter>
+
+ frequency
+ frequency value of internal(external) Xtal(clock) in kHz unit.
+
+==============================================================================*/
+//void fc2580_set_freq_xtal(unsigned int frequency) {
+//
+// freq_xtal = frequency;
+//
+//}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 17:46:41 +0000