2 * Copyright © 2008 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 ccdbg_debug_mode(struct ccdbg *dbg)
24 /* force two rising clocks while holding RESET_N low */
25 ccdbg_half_clock(dbg);
26 ccdbg_write(dbg, CC_RESET_N|CC_CLOCK, 0); ccdbg_half_clock(dbg);
27 ccdbg_write(dbg, CC_CLOCK, CC_CLOCK); ccdbg_half_clock(dbg);
28 ccdbg_write(dbg, CC_CLOCK, 0); ccdbg_half_clock(dbg);
29 ccdbg_write(dbg, CC_CLOCK, CC_CLOCK); ccdbg_half_clock(dbg);
30 ccdbg_write(dbg, CC_RESET_N, CC_RESET_N); ccdbg_half_clock(dbg);
34 ccdbg_reset(struct ccdbg *dbg)
36 ccdbg_half_clock(dbg);
37 ccdbg_write(dbg, CC_RESET_N, 0); ccdbg_half_clock(dbg);
38 ccdbg_write(dbg, CC_RESET_N, CC_RESET_N);
42 ccdbg_read_status(struct ccdbg *dbg)
44 return ccdbg_cmd_write_read8(dbg, CC_READ_STATUS, NULL, 0);
48 ccdbg_rd_config(struct ccdbg *dbg)
50 return ccdbg_cmd_write_read8(dbg, CC_RD_CONFIG, NULL, 0);
54 ccdbg_get_chip_id(struct ccdbg *dbg)
56 return ccdbg_cmd_write_read16(dbg, CC_GET_CHIP_ID, NULL, 0);