Add new board gta0x (for Openmoko Freerunner devices) and build it

For now just copied over the compal_e88 init.c and adapted the RF
frontend functions. For osmocon to work with the GSM download cable
SERCOMM_UART_NR and CONS_UART_NR need to be switched.

1 files changed, 88 insertions, 0 deletions

diff --git a/src/target/firmware/board/common/rffe_gta0x_triband.c b/src/target/firmware/board/common/rffe_gta0x_triband.c
new file mode 100644
index 00000000..63003d4d
--- /dev/null
+++ b/src/target/firmware/board/common/rffe_gta0x_triband.c
@@ -0,0 +1,88 @@
+#include <stdint.h>
+#include <stdio.h>
+
+#include <debug.h>
+#include <memory.h>
+#include <rffe.h>
+#include <calypso/tsp.h>
+#include <rf/trf6151.h>
+
+/* 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_TX		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	TSPEN0		/* Strobe for the Iota TSP */
+#define		RITA_STROBE	TSPEN2		/* 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;	/* low-active */
+	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) {
+		// TODO: Implement tx
+	}
+#endif /* TRANSMIT_SUPPORT */
+
+	tsp_act_update(tspact);
+}
+
+#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);
+}
+
+uint8_t rffe_get_gain(void)
+{
+	return trf6151_get_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_set_gain(int16_t exp_inp, int16_t target_bb)
+{
+	/* FIXME */
+}
+
+void rffe_rx_win_ctrl(int16_t exp_inp, int16_t target_bb)
+{
+	/* FIXME */
+}