#include #include #include #include #include #include #include /* This is a value that has been measured on the C123 by Harald: 71dBm, it is the difference between the input level at the antenna and what the DSP reports, subtracted by the total gain of the TRF6151 */ #define SYSTEM_INHERENT_GAIN 71 /* describe how the RF frontend is wired on the Motorola E86 board (C139/C140) */ #define RITA_RESET TSPACT(0) /* Reset of the Rita TRF6151 */ #define PA_ENABLE TSPACT(1) /* Enable the Power Amplifier */ #define DCS_TX TSPACT(6) /* DCS Transmit Enable */ #define GSM_TX1 TSPACT(8) /* GSM Transmit Enable 1 */ /* in order to save a transistor, the E86 has a second signal for GSM TX */ #define GSM_TX2 TSPACT(2) /* GSM Transmit Enable 2 */ #define IOTA_STROBE TSPEN(0) /* Strobe for the Iota TSP */ #define RITA_STROBE TSPEN(2) /* Strobe for the Rita TSP */ /* switch RF Frontend Mode */ void rffe_mode(enum gsm_band band, int tx) { uint16_t tspact = tsp_act_state(); /* First we mask off all bits from the state cache */ tspact &= ~(PA_ENABLE); tspact |= DCS_TX | GSM_TX1 | GSM_TX2; /* low-active */ #ifdef CONFIG_TX_ENABLE /* Then we selectively set the bits on, if required */ if (tx) { if (band == GSM_BAND_850 || band == GSM_BAND_900) tspact &= ~(GSM_TX1 | GSM_TX2); else tspact &= ~DCS_TX; tspact |= PA_ENABLE; } #endif /* TRANSMIT_SUPPORT */ tsp_act_update(tspact); } /* Returns RF wiring */ uint32_t rffe_get_rx_ports(void) { return (1 << PORT_LO) | (1 << PORT_DCS1800); } uint32_t rffe_get_tx_ports(void) { return (1 << PORT_LO) | (1 << PORT_HI); } #define MCU_SW_TRACE 0xfffef00e #define ARM_CONF_REG 0xfffef006 void rffe_init(void) { uint16_t reg; reg = readw(ARM_CONF_REG); reg &= ~ (1 << 5); /* TSPACT6 I/O function, not nCS6 */ writew(reg, ARM_CONF_REG); reg = readw(MCU_SW_TRACE); reg &= ~(1 << 5); /* TSPACT8 I/O function, not nMREQ */ writew(reg, MCU_SW_TRACE); /* Configure the TSPEN which is connected to the TWL3025 */ tsp_setup(IOTA_STROBE, 1, 0, 0); trf6151_init(RITA_STROBE, RITA_RESET); } uint8_t rffe_get_gain(void) { return trf6151_get_gain(); } void rffe_set_gain(uint8_t dbm) { trf6151_set_gain(dbm); } const uint8_t system_inherent_gain = SYSTEM_INHERENT_GAIN; /* Given the expected input level of exp_inp dBm/8 and the target of target_bb * dBm8, configure the RF Frontend with the respective gain */ void rffe_compute_gain(int16_t exp_inp, int16_t target_bb) { trf6151_compute_gain(exp_inp, target_bb); } void rffe_rx_win_ctrl(int16_t exp_inp, int16_t target_bb) { /* FIXME */ }