| /* |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/device.h> |
| #include <linux/string.h> |
| #include <linux/slab.h> |
| #include <linux/fs.h> |
| #include <linux/platform_device.h> |
| #include <linux/of.h> |
| #include <linux/of_address.h> |
| #include <linux/firmware.h> |
| #include <linux/io.h> |
| |
| #include "io.h" |
| |
| static inline void byte0_out(unsigned char data); |
| static inline void byte1_out(unsigned char data); |
| static inline void xl_cclk_b(int32_t i); |
| |
| /* Assert and Deassert CCLK */ |
| void xl_shift_cclk(int count) |
| { |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| xl_cclk_b(1); |
| xl_cclk_b(0); |
| } |
| } |
| |
| int xl_supported_prog_bus_width(enum wbus bus_bytes) |
| { |
| switch (bus_bytes) { |
| case bus_1byte: |
| break; |
| case bus_2byte: |
| break; |
| default: |
| pr_err("unsupported program bus width %d\n", |
| bus_bytes); |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| /* Serialize byte and clock each bit on target's DIN and CCLK pins */ |
| void xl_shift_bytes_out(enum wbus bus_byte, unsigned char *pdata) |
| { |
| /* |
| * supports 1 and 2 bytes programming mode |
| */ |
| if (likely(bus_byte == bus_2byte)) |
| byte0_out(pdata[0]); |
| |
| byte1_out(pdata[1]); |
| xl_shift_cclk(1); |
| } |
| |
| /* |
| * generic bit swap for xilinx SYSTEMMAP FPGA programming |
| */ |
| void xl_program_b(int32_t i) |
| { |
| } |
| |
| void xl_rdwr_b(int32_t i) |
| { |
| } |
| |
| void xl_csi_b(int32_t i) |
| { |
| } |
| |
| int xl_get_init_b(void) |
| { |
| return -1; |
| } |
| |
| int xl_get_done_b(void) |
| { |
| return -1; |
| } |
| |
| static inline void byte0_out(unsigned char data) |
| { |
| } |
| |
| static inline void byte1_out(unsigned char data) |
| { |
| } |
| |
| static inline void xl_cclk_b(int32_t i) |
| { |
| } |
| |
| /* |
| * configurable per device type for different I/O config |
| */ |
| int xl_init_io(void) |
| { |
| return -1; |
| } |