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 * GNU General Public License for more details. 11 */ 12 13 #define GPDIR 0 14 #define GPCFG 4 /* open drain or not */ 15 #define GPDAT 8 16 17 /* 18 * gpio port and pin definitions 19 * NOTE: port number starts from 0 20 */ 21 #define XL_INITN_PORT 1 22 #define XL_INITN_PIN 14 23 #define XL_RDWRN_PORT 1 24 #define XL_RDWRN_PIN 13 25 #define XL_CCLK_PORT 1 26 #define XL_CCLK_PIN 10 27 #define XL_PROGN_PORT 1 28 #define XL_PROGN_PIN 25 29 #define XL_CSIN_PORT 1 30 #define XL_CSIN_PIN 26 31 #define XL_DONE_PORT 1 32 #define XL_DONE_PIN 27 33 34 /* 35 * gpio mapping 36 * 37 XL_config_D0 – gpio1_31 38 Xl_config_d1 – gpio1_30 39 Xl_config_d2 – gpio1_29 40 Xl_config_d3 – gpio1_28 41 Xl_config_d4 – gpio1_27 42 Xl_config_d5 – gpio1_26 43 Xl_config_d6 – gpio1_25 44 Xl_config_d7 – gpio1_24 45 Xl_config_d8 – gpio1_23 46 Xl_config_d9 – gpio1_22 47 Xl_config_d10 – gpio1_21 48 Xl_config_d11 – gpio1_20 49 Xl_config_d12 – gpio1_19 50 Xl_config_d13 – gpio1_18 51 Xl_config_d14 – gpio1_16 52 Xl_config_d15 – gpio1_14 53 * 54 */ 55 56 /* 57 * program bus width in bytes 58 */ 59 enum wbus { 60 bus_1byte = 1, 61 bus_2byte = 2, 62 }; 63 64 #define MAX_WAIT_DONE 10000 65 66 struct gpiobus { 67 int ngpio; 68 void __iomem *r[4]; 69 }; 70 71 int xl_supported_prog_bus_width(enum wbus bus_bytes); 72 73 void xl_program_b(int32_t i); 74 void xl_rdwr_b(int32_t i); 75 void xl_csi_b(int32_t i); 76 77 int xl_get_init_b(void); 78 int xl_get_done_b(void); 79 80 void xl_shift_cclk(int count); 81 void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata); 82 83 int xl_init_io(void); 84
