1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10 *
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
16 */
17
18#define GPDIR	0
19#define GPCFG	4	/* open drain or not */
20#define GPDAT	8
21
22/*
23 * gpio port and pin definitions
24 * NOTE: port number starts from 0
25 */
26#define	XL_INITN_PORT	1
27#define	XL_INITN_PIN	14
28#define	XL_RDWRN_PORT	1
29#define	XL_RDWRN_PIN	13
30#define	XL_CCLK_PORT	1
31#define	XL_CCLK_PIN	10
32#define	XL_PROGN_PORT	1
33#define	XL_PROGN_PIN	25
34#define	XL_CSIN_PORT	1
35#define	XL_CSIN_PIN	26
36#define	XL_DONE_PORT	1
37#define	XL_DONE_PIN	27
38
39/*
40 * gpio mapping
41 *
42	XL_config_D0 ��� gpio1_31
43	Xl_config_d1 ��� gpio1_30
44	Xl_config_d2 ��� gpio1_29
45	Xl_config_d3 ��� gpio1_28
46	Xl_config_d4 ��� gpio1_27
47	Xl_config_d5 ��� gpio1_26
48	Xl_config_d6 ��� gpio1_25
49	Xl_config_d7 ��� gpio1_24
50	Xl_config_d8 ��� gpio1_23
51	Xl_config_d9 ��� gpio1_22
52	Xl_config_d10 ��� gpio1_21
53	Xl_config_d11 ��� gpio1_20
54	Xl_config_d12 ��� gpio1_19
55	Xl_config_d13 ��� gpio1_18
56	Xl_config_d14 ��� gpio1_16
57	Xl_config_d15 ��� gpio1_14
58*
59*/
60
61/*
62 * program bus width in bytes
63 */
64enum wbus {
65	bus_1byte	= 1,
66	bus_2byte	= 2,
67};
68
69
70#define MAX_WAIT_DONE	10000
71
72
73struct gpiobus {
74	int	ngpio;
75	void __iomem *r[4];
76};
77
78int xl_supported_prog_bus_width(enum wbus bus_bytes);
79
80void xl_program_b(int32_t i);
81void xl_rdwr_b(int32_t i);
82void xl_csi_b(int32_t i);
83
84int xl_get_init_b(void);
85int xl_get_done_b(void);
86
87void xl_shift_cclk(int count);
88void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata);
89
90int xl_init_io(void);
91