ftdi: add support to switch to/from dormant state

Partially extracted from https://review.openocd.org/4935

Change-Id: Ia3f197b257434a1a7979fdbc08936c7c541db1e2
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Signed-off-by: graham sanderson <graham.sanderson@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/6693
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>

diff --git a/src/jtag/drivers/ftdi.c b/src/jtag/drivers/ftdi.c
index 6e2e18450bf08d162c8106ede3cb3ebf4e6b6d0e..d03a4ca233381b1c8298e4580076e4a2a6557700 100644 (file)
--- a/src/jtag/drivers/ftdi.c
+++ b/src/jtag/drivers/ftdi.c
@@ -1238,11 +1238,31 @@ static int ftdi_swd_switch_seq(enum swd_special_seq seq)
                ftdi_swd_swdio_en(true);
                mpsse_clock_data_out(mpsse_ctx, swd_seq_jtag_to_swd, 0, swd_seq_jtag_to_swd_len, SWD_MODE);
                break;
+       case JTAG_TO_DORMANT:
+               LOG_DEBUG("JTAG-to-DORMANT");
+               ftdi_swd_swdio_en(true);
+               mpsse_clock_data_out(mpsse_ctx, swd_seq_jtag_to_dormant, 0, swd_seq_jtag_to_dormant_len, SWD_MODE);
+               break;
        case SWD_TO_JTAG:
                LOG_DEBUG("SWD-to-JTAG");
                ftdi_swd_swdio_en(true);
                mpsse_clock_data_out(mpsse_ctx, swd_seq_swd_to_jtag, 0, swd_seq_swd_to_jtag_len, SWD_MODE);
                break;
+       case SWD_TO_DORMANT:
+               LOG_DEBUG("SWD-to-DORMANT");
+               ftdi_swd_swdio_en(true);
+               mpsse_clock_data_out(mpsse_ctx, swd_seq_swd_to_dormant, 0, swd_seq_swd_to_dormant_len, SWD_MODE);
+               break;
+       case DORMANT_TO_SWD:
+               LOG_DEBUG("DORMANT-to-SWD");
+               ftdi_swd_swdio_en(true);
+               mpsse_clock_data_out(mpsse_ctx, swd_seq_dormant_to_swd, 0, swd_seq_dormant_to_swd_len, SWD_MODE);
+               break;
+       case DORMANT_TO_JTAG:
+               LOG_DEBUG("DORMANT-to-JTAG");
+               ftdi_swd_swdio_en(true);
+               mpsse_clock_data_out(mpsse_ctx, swd_seq_dormant_to_jtag, 0, swd_seq_dormant_to_jtag_len, SWD_MODE);
+               break;
        default:
                LOG_ERROR("Sequence %d not supported", seq);
                return ERROR_FAIL;