mirror of
https://github.com/revyos/th1520-vendor-uboot.git
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527 lines
10 KiB
C
527 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2002
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* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
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*/
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/*
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* SPI Read/Write Utilities
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <errno.h>
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#include <spi.h>
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/*-----------------------------------------------------------------------
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* Definitions
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*/
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#ifndef MAX_SPI_BYTES
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#define MAX_SPI_BYTES 64 /* Maximum number of bytes we can handle */
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#endif
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/*
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* Values from last command.
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*/
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static unsigned int bus;
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static unsigned int cs;
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static unsigned int mode;
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static int bitlen;
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static unsigned int speed = 10000000;
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static uchar dout[MAX_SPI_BYTES];
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static uchar din[MAX_SPI_BYTES];
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typedef struct
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{
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/* data */
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char* cmd_str;
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unsigned char cmd_code;
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}ate_cmd_t;
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static ate_cmd_t g_ate_cmd_table[] = {
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{"rd.b",0xb1},
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{"rd.w",0xb3},
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{"rd.l",0xb2},
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{"wr.b",0xa1},
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{"wr.w",0xa3},
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{"wr.l",0xa2},
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};
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static inline int ate_is_write_cmd(unsigned char cmd){
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if(cmd == 0xa1 || cmd == 0xa2 || cmd == 0xa3 ) {
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return 1;
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}
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else {
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return 0;
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}
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}
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static int ate_get_reg_width(unsigned char cmd)
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{
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int len = 0;
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switch (cmd)
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{
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case 0xa1:
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case 0xb1:
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len = 1;
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break;
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case 0xa2:
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case 0xb2:
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len = 4;
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break;
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case 0xa3:
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case 0xb3:
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len = 2;
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break;
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default:
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break;
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}
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return len;
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}
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static inline int ate_get_write_rsp(unsigned char *rsp, unsigned char *err_code)
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{
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/* 0xc1 + err_code*/
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if(rsp == NULL || err_code == NULL)
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return -1;
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*err_code = *(rsp+1);
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return 0;
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}
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static int ate_get_read_value(unsigned char *rsp, unsigned int reg_len, unsigned int *val)
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{
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unsigned i;
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if(rsp == NULL || val == NULL)
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return -1;
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/*0xc1 + 1/2/4B */
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*val = 0;
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for(i = 0; i < reg_len; i++)
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{
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*val |= *(rsp+1+i) << (i*8);
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}
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return 0;
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}
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static int ate_build_cmd_frame(unsigned char cmd,unsigned long long reg_addr, unsigned int reg_value)
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{
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int spi_frame_index = 0,i,len;
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memset(dout,0,sizeof(dout));
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memset(din,0,sizeof(din));
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/*fill cmd code*/
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dout[spi_frame_index++] = cmd;
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//printf("spi_frame_index: %d\n",spi_frame_index);
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/*fill reg_addr,exp 0xffea000000 -> 0x00 0x00 0x00 0xea 0xff */
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for(i = 0; i < 5; i++){
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dout[spi_frame_index++] = (unsigned char)((reg_addr >> i*8 ) &0xFF);
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}
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//printf("spi_frame_index: %d\n",spi_frame_index);
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/*check whether send reg_value and reg_value length in bytes */
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len = ate_get_reg_width(cmd);
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/* fill reg-value */
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if(ate_is_write_cmd(cmd)) {
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for(i = 0; i < len; i++) {
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dout[spi_frame_index++] = (unsigned char)((reg_value >> i*8 ) &0xFF);
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}
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}
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//printf("spi_frame_index: %d\n",spi_frame_index);
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/*insert 2-byte or 3byte dummy data */
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if(ate_is_write_cmd(cmd)) {
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spi_frame_index +=2;
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}else {
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spi_frame_index +=2;
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}
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//printf("spi_frame_index: %d %d\n",len,spi_frame_index);
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/*pading clk for rsp */
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if(ate_is_write_cmd(cmd)) {
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/*0xc1 + err_code(1B)*/
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spi_frame_index +=2;
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}else {
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/*0xc1 + 1B/2B/4B data */
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spi_frame_index +=len + 1;
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}
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//printf("spi_frame_index: %d\n",spi_frame_index);
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#if 0
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for(i= 0; i < spi_frame_index; i++){
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if(i == 0)
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printf("spi_tx_frame:");
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printf("%02x ",dout[i]);
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if(i == spi_frame_index-1)
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printf("\n");
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}
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#endif
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return spi_frame_index;
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}
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static int ate_get_cmd_code(char*pcmd, uchar* cmd)
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{
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unsigned int table_len = sizeof(g_ate_cmd_table)/sizeof(g_ate_cmd_table[0]);
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unsigned int i;
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for(i = 0 ; i < table_len; i++){
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if(!strcmp(pcmd,g_ate_cmd_table[i].cmd_str)){
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*cmd = g_ate_cmd_table[i].cmd_code;
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return 0;
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}
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}
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return -1;
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}
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static void ate_spi_config(unsigned int bus, unsigned int cs, unsigned mode, unsigned int speed)
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{
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bus = bus;
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cs = cs;
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mode = mode;
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speed = speed;
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return;
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}
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static int do_spi_xfer(int bus, int cs ,int bprint_rx)
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{
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struct spi_slave *slave;
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int ret = 0;
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int j;
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#ifdef CONFIG_DM_SPI
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char name[30], *str;
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struct udevice *dev;
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snprintf(name, sizeof(name), "generic_%d:%d", bus, cs);
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str = strdup(name);
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if (!str)
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return -ENOMEM;
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ret = spi_get_bus_and_cs(bus, cs, speed, mode, "spi_generic_drv",
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str, &dev, &slave);
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if (ret)
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return ret;
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#else
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slave = spi_setup_slave(bus, cs, speed, mode);
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if (!slave) {
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printf("Invalid device %d:%d\n", bus, cs);
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return -EINVAL;
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}
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#endif
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ret = spi_claim_bus(slave);
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if (ret)
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goto done;
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printf("out:\n");
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if(bprint_rx)
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{
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for (j = 0; j < ((bitlen + 7) / 8); j++)
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printf("%02X", dout[j]);
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printf("\n");
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}
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ret = spi_xfer(slave, bitlen, dout, din,
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SPI_XFER_BEGIN | SPI_XFER_END);
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#ifndef CONFIG_DM_SPI
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/* We don't get an error code in this case */
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if (ret)
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ret = -EIO;
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#endif
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if (ret) {
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printf("Error %d during SPI transaction\n", ret);
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} else {
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printf("in:\n");
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if(bprint_rx)
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{
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for (j = 0; j < ((bitlen + 7) / 8); j++)
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printf("%02X", din[j]);
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printf("\n");
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}
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}
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done:
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spi_release_bus(slave);
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#ifndef CONFIG_DM_SPI
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spi_free_slave(slave);
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#endif
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return ret;
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}
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/*
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* SPI read/write
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*
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* Syntax:
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* spi {dev} {num_bits} {dout}
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* {dev} is the device number for controlling chip select (see TBD)
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* {num_bits} is the number of bits to send & receive (base 10)
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* {dout} is a hexadecimal string of data to send
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* The command prints out the hexadecimal string received via SPI.
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*/
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int do_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char *cp = 0;
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uchar tmp;
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int j;
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/*
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* We use the last specified parameters, unless new ones are
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* entered.
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*/
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if ((flag & CMD_FLAG_REPEAT) == 0)
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{
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if (argc >= 2) {
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mode = CONFIG_DEFAULT_SPI_MODE;
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bus = simple_strtoul(argv[1], &cp, 10);
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if (*cp == ':') {
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cs = simple_strtoul(cp+1, &cp, 10);
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} else {
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cs = bus;
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bus = CONFIG_DEFAULT_SPI_BUS;
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}
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if (*cp == '.')
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mode = simple_strtoul(cp+1, NULL, 10);
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}
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if (argc >= 3)
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bitlen = simple_strtoul(argv[2], NULL, 10);
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if (argc >= 4) {
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cp = argv[3];
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for(j = 0; *cp; j++, cp++) {
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tmp = *cp - '0';
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if(tmp > 9)
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tmp -= ('A' - '0') - 10;
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if(tmp > 15)
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tmp -= ('a' - 'A');
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if(tmp > 15) {
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printf("Hex conversion error on %c\n", *cp);
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return 1;
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}
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if((j % 2) == 0)
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dout[j / 2] = (tmp << 4);
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else
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dout[j / 2] |= tmp;
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}
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}
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}
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if ((bitlen < 0) || (bitlen > (MAX_SPI_BYTES * 8))) {
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printf("Invalid bitlen %d\n", bitlen);
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return 1;
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}
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if (do_spi_xfer(bus, cs,1))
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return 1;
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return 0;
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}
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static char ate_cmd_help [] = {
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"ate_spi speed wr{.b .w .l} addr data \n"
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"ate_spi speed rd{.b .w .l} addr\n"
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"{speed} is baud rate of spi, uinit in hz\n"
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"{ rd{.b .w .l}| wr{.b .w .l} } is the reading or writing reg operation\n"
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"{addr} is chip reg addr\n"
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"{data} is the data while opertion is writing\n"
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};
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/*
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* SPI read/write
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*
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* Syntax:
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* ate_spi {dev} {rd|wr} {b|w|l} {addr} {data}
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* {dev} is the device number for controlling chip select (see TBD)
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* {rd|wr} is the reading or writing reg operation
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* {b|w|l} is the width of reg value
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* {addr} is chip reg addr
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* {data} is the data while opertion is writing
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* The command prints out the hexadecimal string received via SPI.
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*/
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int do_ate_spi (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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int ret,frame_len;
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unsigned char cmd = 0;
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unsigned long long reg_addr = 0;
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unsigned int reg_value = 0;
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/*
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* We use the last specified parameters, unless new ones are
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* entered.
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*/
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if ((flag & CMD_FLAG_REPEAT) == 0)
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{
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/* parser argv */
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if(argc < 4){
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printf("cmd err \n");
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printf("%s",ate_cmd_help);
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}
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/*get speed */
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speed = simple_strtoul(argv[1],NULL,10);
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if(speed < 1000000) {
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printf("speed need bigger than 1000000 hz\n");
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return -1;
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}
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/*
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* cs = cs0
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* mode = mode0
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* speed = 1000000(default)
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* bus = 0
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*/
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ate_spi_config(0,0,0,10000000);
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/*get cmd code*/
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ret = ate_get_cmd_code(argv[2],&cmd);
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if(ret){
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printf("unknow cmd code \n");
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printf("%s",ate_cmd_help);
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return ret;
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}
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/* get reg_addr */
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reg_addr = simple_strtoull(argv[3],NULL,16);
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if(ate_is_write_cmd(cmd)){
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reg_value = simple_strtoul(argv[4],NULL,16);
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}
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}
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/*build cmd frame */
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frame_len = ate_build_cmd_frame(cmd,reg_addr,reg_value);
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if(frame_len < 0)
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return -1;
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bitlen = frame_len<<3;
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/*send cmd frame and receive result */
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if (do_spi_xfer(bus, cs,0))
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return 1;
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/* get rsp */
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if(ate_is_write_cmd(cmd)){
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unsigned char err_code = 0xde;
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ret = ate_get_write_rsp(&din[frame_len-2],&err_code);
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printf("0x%02x\n",err_code);
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//printf(" frame_len %d ret = %d rsp = %02x\n",frame_len,ret,err_code);
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}else {
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unsigned int val = 0;
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unsigned int reg_len = 0;
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reg_len = ate_get_reg_width(cmd);
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ate_get_read_value(&din[frame_len-reg_len-1],reg_len,&val);
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if(reg_len == 1){
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printf("0x%02x \n",val);
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}
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if(reg_len == 2){
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printf("0x%04x \n",val);
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}
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if(reg_len == 4){
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printf("0x%08x \n",val);
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}
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}
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return 0;
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}
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/***************************************************/
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int spi_tst_cfg (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char *cp = 0;
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if(argc != 3){
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return -1;
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}
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speed = simple_strtoul(argv[1],&cp,10);
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mode = simple_strtoul(argv[2],&cp,10);
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return 0;
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}
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int spi_tst_xfer (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
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{
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char *cp = 0;
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uchar tmp;
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int j;
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/*
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* We use the last specified parameters, unless new ones are
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* entered.
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*/
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if ((flag & CMD_FLAG_REPEAT) == 0)
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{
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bus = simple_strtoul(argv[1], &cp, 10);
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cs = simple_strtoul(argv[2], &cp, 10);
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bitlen = simple_strtoul(argv[3], NULL, 10);
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cp = argv[4];
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for(j = 0; *cp; j++, cp++) {
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tmp = *cp - '0';
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if(tmp > 9)
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tmp -= ('A' - '0') - 10;
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if(tmp > 15)
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tmp -= ('a' - 'A');
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if(tmp > 15) {
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printf("Hex conversion error on %c\n", *cp);
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return 1;
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}
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if((j % 2) == 0)
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dout[j / 2] = (tmp << 4);
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else
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dout[j / 2] |= tmp;
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}
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}
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if ((bitlen < 0) || (bitlen > (MAX_SPI_BYTES * 8))) {
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printf("Invalid bitlen %d\n", bitlen);
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return -1;
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}
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if (do_spi_xfer(bus, cs,1))
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return -1;
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return 0;
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}
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U_BOOT_CMD(
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sspi, 5, 1, do_spi,
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"SPI utility command",
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"[<bus>:]<cs>[.<mode>] <bit_len> <dout> - Send and receive bits\n"
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"<bus> - Identifies the SPI bus\n"
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"<cs> - Identifies the chip select\n"
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"<mode> - Identifies the SPI mode to use\n"
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"<bit_len> - Number of bits to send (base 10)\n"
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"<dout> - Hexadecimal string that gets sent"
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);
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U_BOOT_CMD(
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spi_tst_xfer, 5, 1, spi_tst_xfer,
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"do spi xfer op",
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"spi_tst_xfer bus(n) cs(n) bits_len(nbyte*8) data(e.g:aabbccddee...)\n"
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);
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U_BOOT_CMD(
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spi_tst_cfg, 3, 1, spi_tst_cfg,
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"config spi speed and mode",
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"spi_tst_cfg speed(hz) mode(0/1/2/3)\n"
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);
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U_BOOT_CMD(
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ate_spi, 5, 1, do_ate_spi,
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"ate_spi test command",
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ate_cmd_help
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);
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