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-rw-r--r--Src/osmoconbb/src/target/firmware/board/gta0x/rffe_gta0x_triband.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/Src/osmoconbb/src/target/firmware/board/gta0x/rffe_gta0x_triband.c b/Src/osmoconbb/src/target/firmware/board/gta0x/rffe_gta0x_triband.c
new file mode 100644
index 0000000..f118d29
--- /dev/null
+++ b/Src/osmoconbb/src/target/firmware/board/gta0x/rffe_gta0x_triband.c
@@ -0,0 +1,131 @@
+#include <stdint.h>
+#include <stdio.h>
+
+#include <debug.h>
+#include <memory.h>
+#include <rffe.h>
+#include <calypso/tsp.h>
+#include <rf/trf6151.h>
+
+/* 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 Openmoko GTA0x boards */
+
+#define RITA_RESET TSPACT(0) /* Reset of the Rita TRF6151 */
+#define PA_ENABLE TSPACT(9) /* Enable the Power Amplifier */
+#define GSM_TXEN TSPACT(3) /* PA GSM switch, low-active */
+
+/* All VCn controls are low-active */
+#define ASM_VC1 TSPACT(2) /* Antenna switch VC1 */
+#define ASM_VC2 TSPACT(1) /* Antenna switch VC2 */
+#define ASM_VC3 TSPACT(4) /* Antenna switch VC3 */
+
+#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 &= ~GSM_TXEN;
+ tspact |= ASM_VC1 | ASM_VC2 | ASM_VC3; /* low-active */
+
+ switch (band) {
+ case GSM_BAND_850:
+ case GSM_BAND_900:
+ case GSM_BAND_1800:
+ break;
+ case GSM_BAND_1900:
+ tspact &= ~ASM_VC2;
+ break;
+ default:
+ /* TODO return/signal error here */
+ break;
+ }
+
+#ifdef CONFIG_TX_ENABLE
+ /* Then we selectively set the bits on, if required */
+ if (tx) {
+ switch (band) {
+ case GSM_BAND_850:
+ case GSM_BAND_900:
+ tspact &= ~ASM_VC3;
+ break;
+ case GSM_BAND_1800:
+ case GSM_BAND_1900:
+ tspact &= ~ASM_VC1;
+ tspact |= ASM_VC2;
+ tspact |= GSM_TXEN;
+ break;
+ default:
+ break;
+ }
+ 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) | (1 << PORT_PCS1900);
+}
+
+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 << 7); /* TSPACT4 I/O function, not nRDYMEM */
+ writew(reg, ARM_CONF_REG);
+
+ reg = readw(MCU_SW_TRACE);
+ reg &= ~(1 << 1); /* TSPACT9 I/O function, not MAS(1) */
+ 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 */
+}