drivers/staging/gs_fpgaboot/io.h

   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  */
  64 enum wbus {
  65         bus_1byte       = 1,
  66         bus_2byte       = 2,
  67 };
  68
  69
  70 #define MAX_WAIT_DONE   10000
  71
  72
  73 struct gpiobus {
  74         int     ngpio;
  75         void __iomem *r[4];
  76 };
  77
  78 int xl_supported_prog_bus_width(enum wbus bus_bytes);
  79
  80 void xl_program_b(int32_t i);
  81 void xl_rdwr_b(int32_t i);
  82 void xl_csi_b(int32_t i);
  83
  84 int xl_get_init_b(void);
  85 int xl_get_done_b(void);
  86
  87 void xl_shift_cclk(int count);
  88 void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata);
  89
  90 int xl_init_io(void);