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); 91