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Diffstat (limited to 'common/cmd_i2c.c')
| -rw-r--r-- | common/cmd_i2c.c | 2030 |
1 files changed, 0 insertions, 2030 deletions
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c deleted file mode 100644 index b3bb64408f..0000000000 --- a/common/cmd_i2c.c +++ /dev/null @@ -1,2030 +0,0 @@ -/* - * (C) Copyright 2009 - * Sergey Kubushyn, himself, ksi@koi8.net - * - * Changes for unified multibus/multiadapter I2C support. - * - * (C) Copyright 2001 - * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * I2C Functions similar to the standard memory functions. - * - * There are several parameters in many of the commands that bear further - * explanations: - * - * {i2c_chip} is the I2C chip address (the first byte sent on the bus). - * Each I2C chip on the bus has a unique address. On the I2C data bus, - * the address is the upper seven bits and the LSB is the "read/write" - * bit. Note that the {i2c_chip} address specified on the command - * line is not shifted up: e.g. a typical EEPROM memory chip may have - * an I2C address of 0x50, but the data put on the bus will be 0xA0 - * for write and 0xA1 for read. This "non shifted" address notation - * matches at least half of the data sheets :-/. - * - * {addr} is the address (or offset) within the chip. Small memory - * chips have 8 bit addresses. Large memory chips have 16 bit - * addresses. Other memory chips have 9, 10, or 11 bit addresses. - * Many non-memory chips have multiple registers and {addr} is used - * as the register index. Some non-memory chips have only one register - * and therefore don't need any {addr} parameter. - * - * The default {addr} parameter is one byte (.1) which works well for - * memories and registers with 8 bits of address space. - * - * You can specify the length of the {addr} field with the optional .0, - * .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are - * manipulating a single register device which doesn't use an address - * field, use "0.0" for the address and the ".0" length field will - * suppress the address in the I2C data stream. This also works for - * successive reads using the I2C auto-incrementing memory pointer. - * - * If you are manipulating a large memory with 2-byte addresses, use - * the .2 address modifier, e.g. 210.2 addresses location 528 (decimal). - * - * Then there are the unfortunate memory chips that spill the most - * significant 1, 2, or 3 bits of address into the chip address byte. - * This effectively makes one chip (logically) look like 2, 4, or - * 8 chips. This is handled (awkwardly) by #defining - * CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the - * {addr} field (since .1 is the default, it doesn't actually have to - * be specified). Examples: given a memory chip at I2C chip address - * 0x50, the following would happen... - * i2c md 50 0 10 display 16 bytes starting at 0x000 - * On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd> - * i2c md 50 100 10 display 16 bytes starting at 0x100 - * On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd> - * i2c md 50 210 10 display 16 bytes starting at 0x210 - * On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd> - * This is awfully ugly. It would be nice if someone would think up - * a better way of handling this. - * - * Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de). - */ - -#include <common.h> -#include <bootretry.h> -#include <cli.h> -#include <command.h> -#include <console.h> -#include <dm.h> -#include <edid.h> -#include <environment.h> -#include <errno.h> -#include <i2c.h> -#include <malloc.h> -#include <asm/byteorder.h> -#include <linux/compiler.h> - -DECLARE_GLOBAL_DATA_PTR; - -/* Display values from last command. - * Memory modify remembered values are different from display memory. - */ -static uint i2c_dp_last_chip; -static uint i2c_dp_last_addr; -static uint i2c_dp_last_alen; -static uint i2c_dp_last_length = 0x10; - -static uint i2c_mm_last_chip; -static uint i2c_mm_last_addr; -static uint i2c_mm_last_alen; - -/* If only one I2C bus is present, the list of devices to ignore when - * the probe command is issued is represented by a 1D array of addresses. - * When multiple buses are present, the list is an array of bus-address - * pairs. The following macros take care of this */ - -#if defined(CONFIG_SYS_I2C_NOPROBES) -#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) -static struct -{ - uchar bus; - uchar addr; -} i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES; -#define GET_BUS_NUM i2c_get_bus_num() -#define COMPARE_BUS(b,i) (i2c_no_probes[(i)].bus == (b)) -#define COMPARE_ADDR(a,i) (i2c_no_probes[(i)].addr == (a)) -#define NO_PROBE_ADDR(i) i2c_no_probes[(i)].addr -#else /* single bus */ -static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES; -#define GET_BUS_NUM 0 -#define COMPARE_BUS(b,i) ((b) == 0) /* Make compiler happy */ -#define COMPARE_ADDR(a,i) (i2c_no_probes[(i)] == (a)) -#define NO_PROBE_ADDR(i) i2c_no_probes[(i)] -#endif /* defined(CONFIG_SYS_I2C) */ -#endif - -#define DISP_LINE_LEN 16 - -/* - * Default for driver model is to use the chip's existing address length. - * For legacy code, this is not stored, so we need to use a suitable - * default. - */ -#ifdef CONFIG_DM_I2C -#define DEFAULT_ADDR_LEN (-1) -#else -#define DEFAULT_ADDR_LEN 1 -#endif - -#ifdef CONFIG_DM_I2C -static struct udevice *i2c_cur_bus; - -static int cmd_i2c_set_bus_num(unsigned int busnum) -{ - struct udevice *bus; - int ret; - - ret = uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus); - if (ret) { - debug("%s: No bus %d\n", __func__, busnum); - return ret; - } - i2c_cur_bus = bus; - - return 0; -} - -static int i2c_get_cur_bus(struct udevice **busp) -{ - if (!i2c_cur_bus) { - puts("No I2C bus selected\n"); - return -ENODEV; - } - *busp = i2c_cur_bus; - - return 0; -} - -static int i2c_get_cur_bus_chip(uint chip_addr, struct udevice **devp) -{ - struct udevice *bus; - int ret; - - ret = i2c_get_cur_bus(&bus); - if (ret) - return ret; - - return i2c_get_chip(bus, chip_addr, 1, devp); -} - -#endif - -/** - * i2c_init_board() - Board-specific I2C bus init - * - * This function is the default no-op implementation of I2C bus - * initialization. This function can be overriden by board-specific - * implementation if needed. - */ -__weak -void i2c_init_board(void) -{ -} - -/* TODO: Implement architecture-specific get/set functions */ - -/** - * i2c_get_bus_speed() - Return I2C bus speed - * - * This function is the default implementation of function for retrieveing - * the current I2C bus speed in Hz. - * - * A driver implementing runtime switching of I2C bus speed must override - * this function to report the speed correctly. Simple or legacy drivers - * can use this fallback. - * - * Returns I2C bus speed in Hz. - */ -#if !defined(CONFIG_SYS_I2C) && !defined(CONFIG_DM_I2C) -/* - * TODO: Implement architecture-specific get/set functions - * Should go away, if we switched completely to new multibus support - */ -__weak -unsigned int i2c_get_bus_speed(void) -{ - return CONFIG_SYS_I2C_SPEED; -} - -/** - * i2c_set_bus_speed() - Configure I2C bus speed - * @speed: Newly set speed of the I2C bus in Hz - * - * This function is the default implementation of function for setting - * the I2C bus speed in Hz. - * - * A driver implementing runtime switching of I2C bus speed must override - * this function to report the speed correctly. Simple or legacy drivers - * can use this fallback. - * - * Returns zero on success, negative value on error. - */ -__weak -int i2c_set_bus_speed(unsigned int speed) -{ - if (speed != CONFIG_SYS_I2C_SPEED) - return -1; - - return 0; -} -#endif - -/** - * get_alen() - Small parser helper function to get address length - * - * Returns the address length. - */ -static uint get_alen(char *arg, int default_len) -{ - int j; - int alen; - - alen = default_len; - for (j = 0; j < 8; j++) { - if (arg[j] == '.') { - alen = arg[j+1] - '0'; - break; - } else if (arg[j] == '\0') - break; - } - return alen; -} - -enum i2c_err_op { - I2C_ERR_READ, - I2C_ERR_WRITE, -}; - -static int i2c_report_err(int ret, enum i2c_err_op op) -{ - printf("Error %s the chip: %d\n", - op == I2C_ERR_READ ? "reading" : "writing", ret); - - return CMD_RET_FAILURE; -} - -/** - * do_i2c_read() - Handle the "i2c read" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c read {i2c_chip} {devaddr}{.0, .1, .2} {len} {memaddr} - */ -static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - uint chip; - uint devaddr, length; - int alen; - u_char *memaddr; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - if (argc != 5) - return CMD_RET_USAGE; - - /* - * I2C chip address - */ - chip = simple_strtoul(argv[1], NULL, 16); - - /* - * I2C data address within the chip. This can be 1 or - * 2 bytes long. Some day it might be 3 bytes long :-). - */ - devaddr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2], DEFAULT_ADDR_LEN); - if (alen > 3) - return CMD_RET_USAGE; - - /* - * Length is the number of objects, not number of bytes. - */ - length = simple_strtoul(argv[3], NULL, 16); - - /* - * memaddr is the address where to store things in memory - */ - memaddr = (u_char *)simple_strtoul(argv[4], NULL, 16); - -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (!ret) - ret = dm_i2c_read(dev, devaddr, memaddr, length); -#else - ret = i2c_read(chip, devaddr, alen, memaddr, length); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - return 0; -} - -static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - uint chip; - uint devaddr, length; - int alen; - u_char *memaddr; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; - struct dm_i2c_chip *i2c_chip; -#endif - - if ((argc < 5) || (argc > 6)) - return cmd_usage(cmdtp); - - /* - * memaddr is the address where to store things in memory - */ - memaddr = (u_char *)simple_strtoul(argv[1], NULL, 16); - - /* - * I2C chip address - */ - chip = simple_strtoul(argv[2], NULL, 16); - - /* - * I2C data address within the chip. This can be 1 or - * 2 bytes long. Some day it might be 3 bytes long :-). - */ - devaddr = simple_strtoul(argv[3], NULL, 16); - alen = get_alen(argv[3], DEFAULT_ADDR_LEN); - if (alen > 3) - return cmd_usage(cmdtp); - - /* - * Length is the number of bytes. - */ - length = simple_strtoul(argv[4], NULL, 16); - -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); - i2c_chip = dev_get_parent_platdata(dev); - if (!i2c_chip) - return i2c_report_err(ret, I2C_ERR_WRITE); -#endif - - if (argc == 6 && !strcmp(argv[5], "-s")) { - /* - * Write all bytes in a single I2C transaction. If the target - * device is an EEPROM, it is your responsibility to not cross - * a page boundary. No write delay upon completion, take this - * into account if linking commands. - */ -#ifdef CONFIG_DM_I2C - i2c_chip->flags &= ~DM_I2C_CHIP_WR_ADDRESS; - ret = dm_i2c_write(dev, devaddr, memaddr, length); -#else - ret = i2c_write(chip, devaddr, alen, memaddr, length); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); - } else { - /* - * Repeated addressing - perform <length> separate - * write transactions of one byte each - */ - while (length-- > 0) { -#ifdef CONFIG_DM_I2C - i2c_chip->flags |= DM_I2C_CHIP_WR_ADDRESS; - ret = dm_i2c_write(dev, devaddr++, memaddr++, 1); -#else - ret = i2c_write(chip, devaddr++, alen, memaddr++, 1); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); -/* - * No write delay with FRAM devices. - */ -#if !defined(CONFIG_SYS_I2C_FRAM) - udelay(11000); -#endif - } - } - return 0; -} - -#ifdef CONFIG_DM_I2C -static int do_i2c_flags(cmd_tbl_t *cmdtp, int flag, int argc, - char *const argv[]) -{ - struct udevice *dev; - uint flags; - int chip; - int ret; - - if (argc < 2) - return CMD_RET_USAGE; - - chip = simple_strtoul(argv[1], NULL, 16); - ret = i2c_get_cur_bus_chip(chip, &dev); - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - if (argc > 2) { - flags = simple_strtoul(argv[2], NULL, 16); - ret = i2c_set_chip_flags(dev, flags); - } else { - ret = i2c_get_chip_flags(dev, &flags); - if (!ret) - printf("%x\n", flags); - } - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - return 0; -} - -static int do_i2c_olen(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) -{ - struct udevice *dev; - uint olen; - int chip; - int ret; - - if (argc < 2) - return CMD_RET_USAGE; - - chip = simple_strtoul(argv[1], NULL, 16); - ret = i2c_get_cur_bus_chip(chip, &dev); - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - if (argc > 2) { - olen = simple_strtoul(argv[2], NULL, 16); - ret = i2c_set_chip_offset_len(dev, olen); - } else { - ret = i2c_get_chip_offset_len(dev); - if (ret >= 0) { - printf("%x\n", ret); - ret = 0; - } - } - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - return 0; -} -#endif - -/** - * do_i2c_md() - Handle the "i2c md" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c md {i2c_chip} {addr}{.0, .1, .2} {len} - */ -static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - uint chip; - uint addr, length; - int alen; - int j, nbytes, linebytes; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - /* We use the last specified parameters, unless new ones are - * entered. - */ - chip = i2c_dp_last_chip; - addr = i2c_dp_last_addr; - alen = i2c_dp_last_alen; - length = i2c_dp_last_length; - - if (argc < 3) - return CMD_RET_USAGE; - - if ((flag & CMD_FLAG_REPEAT) == 0) { - /* - * New command specified. - */ - - /* - * I2C chip address - */ - chip = simple_strtoul(argv[1], NULL, 16); - - /* - * I2C data address within the chip. This can be 1 or - * 2 bytes long. Some day it might be 3 bytes long :-). - */ - addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2], DEFAULT_ADDR_LEN); - if (alen > 3) - return CMD_RET_USAGE; - - /* - * If another parameter, it is the length to display. - * Length is the number of objects, not number of bytes. - */ - if (argc > 3) - length = simple_strtoul(argv[3], NULL, 16); - } - -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); -#endif - - /* - * Print the lines. - * - * We buffer all read data, so we can make sure data is read only - * once. - */ - nbytes = length; - do { - unsigned char linebuf[DISP_LINE_LEN]; - unsigned char *cp; - - linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes; - -#ifdef CONFIG_DM_I2C - ret = dm_i2c_read(dev, addr, linebuf, linebytes); -#else - ret = i2c_read(chip, addr, alen, linebuf, linebytes); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - else { - printf("%04x:", addr); - cp = linebuf; - for (j=0; j<linebytes; j++) { - printf(" %02x", *cp++); - addr++; - } - puts (" "); - cp = linebuf; - for (j=0; j<linebytes; j++) { - if ((*cp < 0x20) || (*cp > 0x7e)) - puts ("."); - else - printf("%c", *cp); - cp++; - } - putc ('\n'); - } - nbytes -= linebytes; - } while (nbytes > 0); - - i2c_dp_last_chip = chip; - i2c_dp_last_addr = addr; - i2c_dp_last_alen = alen; - i2c_dp_last_length = length; - - return 0; -} - -/** - * do_i2c_mw() - Handle the "i2c mw" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}] - */ -static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - uint chip; - ulong addr; - int alen; - uchar byte; - int count; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - if ((argc < 4) || (argc > 5)) - return CMD_RET_USAGE; - - /* - * Chip is always specified. - */ - chip = simple_strtoul(argv[1], NULL, 16); - - /* - * Address is always specified. - */ - addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2], DEFAULT_ADDR_LEN); - if (alen > 3) - return CMD_RET_USAGE; - -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); -#endif - /* - * Value to write is always specified. - */ - byte = simple_strtoul(argv[3], NULL, 16); - - /* - * Optional count - */ - if (argc == 5) - count = simple_strtoul(argv[4], NULL, 16); - else - count = 1; - - while (count-- > 0) { -#ifdef CONFIG_DM_I2C - ret = dm_i2c_write(dev, addr++, &byte, 1); -#else - ret = i2c_write(chip, addr++, alen, &byte, 1); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); - /* - * Wait for the write to complete. The write can take - * up to 10mSec (we allow a little more time). - */ -/* - * No write delay with FRAM devices. - */ -#if !defined(CONFIG_SYS_I2C_FRAM) - udelay(11000); -#endif - } - - return 0; -} - -/** - * do_i2c_crc() - Handle the "i2c crc32" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Calculate a CRC on memory - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count} - */ -static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - uint chip; - ulong addr; - int alen; - int count; - uchar byte; - ulong crc; - ulong err; - int ret = 0; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - if (argc < 4) - return CMD_RET_USAGE; - - /* - * Chip is always specified. - */ - chip = simple_strtoul(argv[1], NULL, 16); - - /* - * Address is always specified. - */ - addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2], DEFAULT_ADDR_LEN); - if (alen > 3) - return CMD_RET_USAGE; - -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); -#endif - /* - * Count is always specified - */ - count = simple_strtoul(argv[3], NULL, 16); - - printf ("CRC32 for %08lx ... %08lx ==> ", addr, addr + count - 1); - /* - * CRC a byte at a time. This is going to be slooow, but hey, the - * memories are small and slow too so hopefully nobody notices. - */ - crc = 0; - err = 0; - while (count-- > 0) { -#ifdef CONFIG_DM_I2C - ret = dm_i2c_read(dev, addr, &byte, 1); -#else - ret = i2c_read(chip, addr, alen, &byte, 1); -#endif - if (ret) - err++; - crc = crc32 (crc, &byte, 1); - addr++; - } - if (err > 0) - i2c_report_err(ret, I2C_ERR_READ); - else - printf ("%08lx\n", crc); - - return 0; -} - -/** - * mod_i2c_mem() - Handle the "i2c mm" and "i2c nm" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Modify memory. - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c mm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2} - * i2c nm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2} - */ -static int -mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[]) -{ - uint chip; - ulong addr; - int alen; - ulong data; - int size = 1; - int nbytes; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - if (argc != 3) - return CMD_RET_USAGE; - - bootretry_reset_cmd_timeout(); /* got a good command to get here */ - /* - * We use the last specified parameters, unless new ones are - * entered. - */ - chip = i2c_mm_last_chip; - addr = i2c_mm_last_addr; - alen = i2c_mm_last_alen; - - if ((flag & CMD_FLAG_REPEAT) == 0) { - /* - * New command specified. Check for a size specification. - * Defaults to byte if no or incorrect specification. - */ - size = cmd_get_data_size(argv[0], 1); - - /* - * Chip is always specified. - */ - chip = simple_strtoul(argv[1], NULL, 16); - - /* - * Address is always specified. - */ - addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2], DEFAULT_ADDR_LEN); - if (alen > 3) - return CMD_RET_USAGE; - } - -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); -#endif - - /* - * Print the address, followed by value. Then accept input for - * the next value. A non-converted value exits. - */ - do { - printf("%08lx:", addr); -#ifdef CONFIG_DM_I2C - ret = dm_i2c_read(dev, addr, (uchar *)&data, size); -#else - ret = i2c_read(chip, addr, alen, (uchar *)&data, size); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - data = cpu_to_be32(data); - if (size == 1) - printf(" %02lx", (data >> 24) & 0x000000FF); - else if (size == 2) - printf(" %04lx", (data >> 16) & 0x0000FFFF); - else - printf(" %08lx", data); - - nbytes = cli_readline(" ? "); - if (nbytes == 0) { - /* - * <CR> pressed as only input, don't modify current - * location and move to next. - */ - if (incrflag) - addr += size; - nbytes = size; - /* good enough to not time out */ - bootretry_reset_cmd_timeout(); - } -#ifdef CONFIG_BOOT_RETRY_TIME - else if (nbytes == -2) - break; /* timed out, exit the command */ -#endif - else { - char *endp; - - data = simple_strtoul(console_buffer, &endp, 16); - if (size == 1) - data = data << 24; - else if (size == 2) - data = data << 16; - data = be32_to_cpu(data); - nbytes = endp - console_buffer; - if (nbytes) { - /* - * good enough to not time out - */ - bootretry_reset_cmd_timeout(); -#ifdef CONFIG_DM_I2C - ret = dm_i2c_write(dev, addr, (uchar *)&data, - size); -#else - ret = i2c_write(chip, addr, alen, - (uchar *)&data, size); -#endif - if (ret) - return i2c_report_err(ret, - I2C_ERR_WRITE); -#ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS - udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000); -#endif - if (incrflag) - addr += size; - } - } - } while (nbytes); - - i2c_mm_last_chip = chip; - i2c_mm_last_addr = addr; - i2c_mm_last_alen = alen; - - return 0; -} - -/** - * do_i2c_probe() - Handle the "i2c probe" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c probe {addr} - * - * Returns zero (success) if one or more I2C devices was found - */ -static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - int j; - int addr = -1; - int found = 0; -#if defined(CONFIG_SYS_I2C_NOPROBES) - int k, skip; - unsigned int bus = GET_BUS_NUM; -#endif /* NOPROBES */ - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *bus, *dev; - - if (i2c_get_cur_bus(&bus)) - return CMD_RET_FAILURE; -#endif - - if (argc == 2) - addr = simple_strtol(argv[1], 0, 16); - - puts ("Valid chip addresses:"); - for (j = 0; j < 128; j++) { - if ((0 <= addr) && (j != addr)) - continue; - -#if defined(CONFIG_SYS_I2C_NOPROBES) - skip = 0; - for (k = 0; k < ARRAY_SIZE(i2c_no_probes); k++) { - if (COMPARE_BUS(bus, k) && COMPARE_ADDR(j, k)) { - skip = 1; - break; - } - } - if (skip) - continue; -#endif -#ifdef CONFIG_DM_I2C - ret = dm_i2c_probe(bus, j, 0, &dev); -#else - ret = i2c_probe(j); -#endif - if (ret == 0) { - printf(" %02X", j); - found++; - } - } - putc ('\n'); - -#if defined(CONFIG_SYS_I2C_NOPROBES) - puts ("Excluded chip addresses:"); - for (k = 0; k < ARRAY_SIZE(i2c_no_probes); k++) { - if (COMPARE_BUS(bus,k)) - printf(" %02X", NO_PROBE_ADDR(k)); - } - putc ('\n'); -#endif - - return (0 == found); -} - -/** - * do_i2c_loop() - Handle the "i2c loop" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - * - * Syntax: - * i2c loop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}] - * {length} - Number of bytes to read - * {delay} - A DECIMAL number and defaults to 1000 uSec - */ -static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - uint chip; - int alen; - uint addr; - uint length; - u_char bytes[16]; - int delay; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - if (argc < 3) - return CMD_RET_USAGE; - - /* - * Chip is always specified. - */ - chip = simple_strtoul(argv[1], NULL, 16); - - /* - * Address is always specified. - */ - addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2], DEFAULT_ADDR_LEN); - if (alen > 3) - return CMD_RET_USAGE; -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret && alen != -1) - ret = i2c_set_chip_offset_len(dev, alen); - if (ret) - return i2c_report_err(ret, I2C_ERR_WRITE); -#endif - - /* - * Length is the number of objects, not number of bytes. - */ - length = 1; - length = simple_strtoul(argv[3], NULL, 16); - if (length > sizeof(bytes)) - length = sizeof(bytes); - - /* - * The delay time (uSec) is optional. - */ - delay = 1000; - if (argc > 3) - delay = simple_strtoul(argv[4], NULL, 10); - /* - * Run the loop... - */ - while (1) { -#ifdef CONFIG_DM_I2C - ret = dm_i2c_read(dev, addr, bytes, length); -#else - ret = i2c_read(chip, addr, alen, bytes, length); -#endif - if (ret) - i2c_report_err(ret, I2C_ERR_READ); - udelay(delay); - } - - /* NOTREACHED */ - return 0; -} - -/* - * The SDRAM command is separately configured because many - * (most?) embedded boards don't use SDRAM DIMMs. - * - * FIXME: Document and probably move elsewhere! - */ -#if defined(CONFIG_CMD_SDRAM) -static void print_ddr2_tcyc (u_char const b) -{ - printf ("%d.", (b >> 4) & 0x0F); - switch (b & 0x0F) { - case 0x0: - case 0x1: - case 0x2: - case 0x3: - case 0x4: - case 0x5: - case 0x6: - case 0x7: - case 0x8: - case 0x9: - printf ("%d ns\n", b & 0x0F); - break; - case 0xA: - puts ("25 ns\n"); - break; - case 0xB: - puts ("33 ns\n"); - break; - case 0xC: - puts ("66 ns\n"); - break; - case 0xD: - puts ("75 ns\n"); - break; - default: - puts ("?? ns\n"); - break; - } -} - -static void decode_bits (u_char const b, char const *str[], int const do_once) -{ - u_char mask; - - for (mask = 0x80; mask != 0x00; mask >>= 1, ++str) { - if (b & mask) { - puts (*str); - if (do_once) - return; - } - } -} - -/* - * Syntax: - * i2c sdram {i2c_chip} - */ -static int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - enum { unknown, EDO, SDRAM, DDR2 } type; - - uint chip; - u_char data[128]; - u_char cksum; - int j; - - static const char *decode_CAS_DDR2[] = { - " TBD", " 6", " 5", " 4", " 3", " 2", " TBD", " TBD" - }; - - static const char *decode_CAS_default[] = { - " TBD", " 7", " 6", " 5", " 4", " 3", " 2", " 1" - }; - - static const char *decode_CS_WE_default[] = { - " TBD", " 6", " 5", " 4", " 3", " 2", " 1", " 0" - }; - - static const char *decode_byte21_default[] = { - " TBD (bit 7)\n", - " Redundant row address\n", - " Differential clock input\n", - " Registerd DQMB inputs\n", - " Buffered DQMB inputs\n", - " On-card PLL\n", - " Registered address/control lines\n", - " Buffered address/control lines\n" - }; - - static const char *decode_byte22_DDR2[] = { - " TBD (bit 7)\n", - " TBD (bit 6)\n", - " TBD (bit 5)\n", - " TBD (bit 4)\n", - " TBD (bit 3)\n", - " Supports partial array self refresh\n", - " Supports 50 ohm ODT\n", - " Supports weak driver\n" - }; - - static const char *decode_row_density_DDR2[] = { - "512 MiB", "256 MiB", "128 MiB", "16 GiB", - "8 GiB", "4 GiB", "2 GiB", "1 GiB" - }; - - static const char *decode_row_density_default[] = { - "512 MiB", "256 MiB", "128 MiB", "64 MiB", - "32 MiB", "16 MiB", "8 MiB", "4 MiB" - }; - - if (argc < 2) - return CMD_RET_USAGE; - - /* - * Chip is always specified. - */ - chip = simple_strtoul (argv[1], NULL, 16); - - if (i2c_read (chip, 0, 1, data, sizeof (data)) != 0) { - puts ("No SDRAM Serial Presence Detect found.\n"); - return 1; - } - - cksum = 0; - for (j = 0; j < 63; j++) { - cksum += data[j]; - } - if (cksum != data[63]) { - printf ("WARNING: Configuration data checksum failure:\n" - " is 0x%02x, calculated 0x%02x\n", data[63], cksum); - } - printf ("SPD data revision %d.%d\n", - (data[62] >> 4) & 0x0F, data[62] & 0x0F); - printf ("Bytes used 0x%02X\n", data[0]); - printf ("Serial memory size 0x%02X\n", 1 << data[1]); - - puts ("Memory type "); - switch (data[2]) { - case 2: - type = EDO; - puts ("EDO\n"); - break; - case 4: - type = SDRAM; - puts ("SDRAM\n"); - break; - case 8: - type = DDR2; - puts ("DDR2\n"); - break; - default: - type = unknown; - puts ("unknown\n"); - break; - } - - puts ("Row address bits "); - if ((data[3] & 0x00F0) == 0) - printf ("%d\n", data[3] & 0x0F); - else - printf ("%d/%d\n", data[3] & 0x0F, (data[3] >> 4) & 0x0F); - - puts ("Column address bits "); - if ((data[4] & 0x00F0) == 0) - printf ("%d\n", data[4] & 0x0F); - else - printf ("%d/%d\n", data[4] & 0x0F, (data[4] >> 4) & 0x0F); - - switch (type) { - case DDR2: - printf ("Number of ranks %d\n", - (data[5] & 0x07) + 1); - break; - default: - printf ("Module rows %d\n", data[5]); - break; - } - - switch (type) { - case DDR2: - printf ("Module data width %d bits\n", data[6]); - break; - default: - printf ("Module data width %d bits\n", - (data[7] << 8) | data[6]); - break; - } - - puts ("Interface signal levels "); - switch(data[8]) { - case 0: puts ("TTL 5.0 V\n"); break; - case 1: puts ("LVTTL\n"); break; - case 2: puts ("HSTL 1.5 V\n"); break; - case 3: puts ("SSTL 3.3 V\n"); break; - case 4: puts ("SSTL 2.5 V\n"); break; - case 5: puts ("SSTL 1.8 V\n"); break; - default: puts ("unknown\n"); break; - } - - switch (type) { - case DDR2: - printf ("SDRAM cycle time "); - print_ddr2_tcyc (data[9]); - break; - default: - printf ("SDRAM cycle time %d.%d ns\n", - (data[9] >> 4) & 0x0F, data[9] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("SDRAM access time 0.%d%d ns\n", - (data[10] >> 4) & 0x0F, data[10] & 0x0F); - break; - default: - printf ("SDRAM access time %d.%d ns\n", - (data[10] >> 4) & 0x0F, data[10] & 0x0F); - break; - } - - puts ("EDC configuration "); - switch (data[11]) { - case 0: puts ("None\n"); break; - case 1: puts ("Parity\n"); break; - case 2: puts ("ECC\n"); break; - default: puts ("unknown\n"); break; - } - - if ((data[12] & 0x80) == 0) - puts ("No self refresh, rate "); - else - puts ("Self refresh, rate "); - - switch(data[12] & 0x7F) { - case 0: puts ("15.625 us\n"); break; - case 1: puts ("3.9 us\n"); break; - case 2: puts ("7.8 us\n"); break; - case 3: puts ("31.3 us\n"); break; - case 4: puts ("62.5 us\n"); break; - case 5: puts ("125 us\n"); break; - default: puts ("unknown\n"); break; - } - - switch (type) { - case DDR2: - printf ("SDRAM width (primary) %d\n", data[13]); - break; - default: - printf ("SDRAM width (primary) %d\n", data[13] & 0x7F); - if ((data[13] & 0x80) != 0) { - printf (" (second bank) %d\n", - 2 * (data[13] & 0x7F)); - } - break; - } - - switch (type) { - case DDR2: - if (data[14] != 0) - printf ("EDC width %d\n", data[14]); - break; - default: - if (data[14] != 0) { - printf ("EDC width %d\n", - data[14] & 0x7F); - - if ((data[14] & 0x80) != 0) { - printf (" (second bank) %d\n", - 2 * (data[14] & 0x7F)); - } - } - break; - } - - if (DDR2 != type) { - printf ("Min clock delay, back-to-back random column addresses " - "%d\n", data[15]); - } - - puts ("Burst length(s) "); - if (data[16] & 0x80) puts (" Page"); - if (data[16] & 0x08) puts (" 8"); - if (data[16] & 0x04) puts (" 4"); - if (data[16] & 0x02) puts (" 2"); - if (data[16] & 0x01) puts (" 1"); - putc ('\n'); - printf ("Number of banks %d\n", data[17]); - - switch (type) { - case DDR2: - puts ("CAS latency(s) "); - decode_bits (data[18], decode_CAS_DDR2, 0); - putc ('\n'); - break; - default: - puts ("CAS latency(s) "); - decode_bits (data[18], decode_CAS_default, 0); - putc ('\n'); - break; - } - - if (DDR2 != type) { - puts ("CS latency(s) "); - decode_bits (data[19], decode_CS_WE_default, 0); - putc ('\n'); - } - - if (DDR2 != type) { - puts ("WE latency(s) "); - decode_bits (data[20], decode_CS_WE_default, 0); - putc ('\n'); - } - - switch (type) { - case DDR2: - puts ("Module attributes:\n"); - if (data[21] & 0x80) - puts (" TBD (bit 7)\n"); - if (data[21] & 0x40) - puts (" Analysis probe installed\n"); - if (data[21] & 0x20) - puts (" TBD (bit 5)\n"); - if (data[21] & 0x10) - puts (" FET switch external enable\n"); - printf (" %d PLLs on DIMM\n", (data[21] >> 2) & 0x03); - if (data[20] & 0x11) { - printf (" %d active registers on DIMM\n", - (data[21] & 0x03) + 1); - } - break; - default: - puts ("Module attributes:\n"); - if (!data[21]) - puts (" (none)\n"); - else - decode_bits (data[21], decode_byte21_default, 0); - break; - } - - switch (type) { - case DDR2: - decode_bits (data[22], decode_byte22_DDR2, 0); - break; - default: - puts ("Device attributes:\n"); - if (data[22] & 0x80) puts (" TBD (bit 7)\n"); - if (data[22] & 0x40) puts (" TBD (bit 6)\n"); - if (data[22] & 0x20) puts (" Upper Vcc tolerance 5%\n"); - else puts (" Upper Vcc tolerance 10%\n"); - if (data[22] & 0x10) puts (" Lower Vcc tolerance 5%\n"); - else puts (" Lower Vcc tolerance 10%\n"); - if (data[22] & 0x08) puts (" Supports write1/read burst\n"); - if (data[22] & 0x04) puts (" Supports precharge all\n"); - if (data[22] & 0x02) puts (" Supports auto precharge\n"); - if (data[22] & 0x01) puts (" Supports early RAS# precharge\n"); - break; - } - - switch (type) { - case DDR2: - printf ("SDRAM cycle time (2nd highest CAS latency) "); - print_ddr2_tcyc (data[23]); - break; - default: - printf ("SDRAM cycle time (2nd highest CAS latency) %d." - "%d ns\n", (data[23] >> 4) & 0x0F, data[23] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("SDRAM access from clock (2nd highest CAS latency) 0." - "%d%d ns\n", (data[24] >> 4) & 0x0F, data[24] & 0x0F); - break; - default: - printf ("SDRAM access from clock (2nd highest CAS latency) %d." - "%d ns\n", (data[24] >> 4) & 0x0F, data[24] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("SDRAM cycle time (3rd highest CAS latency) "); - print_ddr2_tcyc (data[25]); - break; - default: - printf ("SDRAM cycle time (3rd highest CAS latency) %d." - "%d ns\n", (data[25] >> 4) & 0x0F, data[25] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("SDRAM access from clock (3rd highest CAS latency) 0." - "%d%d ns\n", (data[26] >> 4) & 0x0F, data[26] & 0x0F); - break; - default: - printf ("SDRAM access from clock (3rd highest CAS latency) %d." - "%d ns\n", (data[26] >> 4) & 0x0F, data[26] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("Minimum row precharge %d.%02d ns\n", - (data[27] >> 2) & 0x3F, 25 * (data[27] & 0x03)); - break; - default: - printf ("Minimum row precharge %d ns\n", data[27]); - break; - } - - switch (type) { - case DDR2: - printf ("Row active to row active min %d.%02d ns\n", - (data[28] >> 2) & 0x3F, 25 * (data[28] & 0x03)); - break; - default: - printf ("Row active to row active min %d ns\n", data[28]); - break; - } - - switch (type) { - case DDR2: - printf ("RAS to CAS delay min %d.%02d ns\n", - (data[29] >> 2) & 0x3F, 25 * (data[29] & 0x03)); - break; - default: - printf ("RAS to CAS delay min %d ns\n", data[29]); - break; - } - - printf ("Minimum RAS pulse width %d ns\n", data[30]); - - switch (type) { - case DDR2: - puts ("Density of each row "); - decode_bits (data[31], decode_row_density_DDR2, 1); - putc ('\n'); - break; - default: - puts ("Density of each row "); - decode_bits (data[31], decode_row_density_default, 1); - putc ('\n'); - break; - } - - switch (type) { - case DDR2: - puts ("Command and Address setup "); - if (data[32] >= 0xA0) { - printf ("1.%d%d ns\n", - ((data[32] >> 4) & 0x0F) - 10, data[32] & 0x0F); - } else { - printf ("0.%d%d ns\n", - ((data[32] >> 4) & 0x0F), data[32] & 0x0F); - } - break; - default: - printf ("Command and Address setup %c%d.%d ns\n", - (data[32] & 0x80) ? '-' : '+', - (data[32] >> 4) & 0x07, data[32] & 0x0F); - break; - } - - switch (type) { - case DDR2: - puts ("Command and Address hold "); - if (data[33] >= 0xA0) { - printf ("1.%d%d ns\n", - ((data[33] >> 4) & 0x0F) - 10, data[33] & 0x0F); - } else { - printf ("0.%d%d ns\n", - ((data[33] >> 4) & 0x0F), data[33] & 0x0F); - } - break; - default: - printf ("Command and Address hold %c%d.%d ns\n", - (data[33] & 0x80) ? '-' : '+', - (data[33] >> 4) & 0x07, data[33] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("Data signal input setup 0.%d%d ns\n", - (data[34] >> 4) & 0x0F, data[34] & 0x0F); - break; - default: - printf ("Data signal input setup %c%d.%d ns\n", - (data[34] & 0x80) ? '-' : '+', - (data[34] >> 4) & 0x07, data[34] & 0x0F); - break; - } - - switch (type) { - case DDR2: - printf ("Data signal input hold 0.%d%d ns\n", - (data[35] >> 4) & 0x0F, data[35] & 0x0F); - break; - default: - printf ("Data signal input hold %c%d.%d ns\n", - (data[35] & 0x80) ? '-' : '+', - (data[35] >> 4) & 0x07, data[35] & 0x0F); - break; - } - - puts ("Manufacturer's JEDEC ID "); - for (j = 64; j <= 71; j++) - printf ("%02X ", data[j]); - putc ('\n'); - printf ("Manufacturing Location %02X\n", data[72]); - puts ("Manufacturer's Part Number "); - for (j = 73; j <= 90; j++) - printf ("%02X ", data[j]); - putc ('\n'); - printf ("Revision Code %02X %02X\n", data[91], data[92]); - printf ("Manufacturing Date %02X %02X\n", data[93], data[94]); - puts ("Assembly Serial Number "); - for (j = 95; j <= 98; j++) - printf ("%02X ", data[j]); - putc ('\n'); - - if (DDR2 != type) { - printf ("Speed rating PC%d\n", - data[126] == 0x66 ? 66 : data[126]); - } - return 0; -} -#endif - -/* - * Syntax: - * i2c edid {i2c_chip} - */ -#if defined(CONFIG_I2C_EDID) -int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) -{ - uint chip; - struct edid1_info edid; - int ret; -#ifdef CONFIG_DM_I2C - struct udevice *dev; -#endif - - if (argc < 2) { - cmd_usage(cmdtp); - return 1; - } - - chip = simple_strtoul(argv[1], NULL, 16); -#ifdef CONFIG_DM_I2C - ret = i2c_get_cur_bus_chip(chip, &dev); - if (!ret) - ret = dm_i2c_read(dev, 0, (uchar *)&edid, sizeof(edid)); -#else - ret = i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid)); -#endif - if (ret) - return i2c_report_err(ret, I2C_ERR_READ); - - if (edid_check_info(&edid)) { - puts("Content isn't valid EDID.\n"); - return 1; - } - - edid_print_info(&edid); - return 0; - -} -#endif /* CONFIG_I2C_EDID */ - -#ifdef CONFIG_DM_I2C -static void show_bus(struct udevice *bus) -{ - struct udevice *dev; - - printf("Bus %d:\t%s", bus->req_seq, bus->name); - if (device_active(bus)) - printf(" (active %d)", bus->seq); - printf("\n"); - for (device_find_first_child(bus, &dev); - dev; - device_find_next_child(&dev)) { - struct dm_i2c_chip *chip = dev_get_parent_platdata(dev); - - printf(" %02x: %s, offset len %x, flags %x\n", - chip->chip_addr, dev->name, chip->offset_len, - chip->flags); - } -} -#endif - -/** - * do_i2c_show_bus() - Handle the "i2c bus" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero always. - */ -#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C) -static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc, - char * const argv[]) -{ - if (argc == 1) { - /* show all busses */ -#ifdef CONFIG_DM_I2C - struct udevice *bus; - struct uclass *uc; - int ret; - - ret = uclass_get(UCLASS_I2C, &uc); - if (ret) - return CMD_RET_FAILURE; - uclass_foreach_dev(bus, uc) - show_bus(bus); -#else - int i; - - for (i = 0; i < CONFIG_SYS_NUM_I2C_BUSES; i++) { - printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name); -#ifndef CONFIG_SYS_I2C_DIRECT_BUS - int j; - - for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) { - if (i2c_bus[i].next_hop[j].chip == 0) - break; - printf("->%s@0x%2x:%d", - i2c_bus[i].next_hop[j].mux.name, - i2c_bus[i].next_hop[j].chip, - i2c_bus[i].next_hop[j].channel); - } -#endif - printf("\n"); - } -#endif - } else { - int i; - - /* show specific bus */ - i = simple_strtoul(argv[1], NULL, 10); -#ifdef CONFIG_DM_I2C - struct udevice *bus; - int ret; - - ret = uclass_get_device_by_seq(UCLASS_I2C, i, &bus); - if (ret) { - printf("Invalid bus %d: err=%d\n", i, ret); - return CMD_RET_FAILURE; - } - show_bus(bus); -#else - if (i >= CONFIG_SYS_NUM_I2C_BUSES) { - printf("Invalid bus %d\n", i); - return -1; - } - printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name); -#ifndef CONFIG_SYS_I2C_DIRECT_BUS - int j; - for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) { - if (i2c_bus[i].next_hop[j].chip == 0) - break; - printf("->%s@0x%2x:%d", - i2c_bus[i].next_hop[j].mux.name, - i2c_bus[i].next_hop[j].chip, - i2c_bus[i].next_hop[j].channel); - } -#endif - printf("\n"); -#endif - } - - return 0; -} -#endif - -/** - * do_i2c_bus_num() - Handle the "i2c dev" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - */ -#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) || \ - defined(CONFIG_DM_I2C) -static int do_i2c_bus_num(cmd_tbl_t *cmdtp, int flag, int argc, - char * const argv[]) -{ - int ret = 0; - int bus_no; - - if (argc == 1) { - /* querying current setting */ -#ifdef CONFIG_DM_I2C - struct udevice *bus; - - if (!i2c_get_cur_bus(&bus)) - bus_no = bus->seq; - else - bus_no = -1; -#else - bus_no = i2c_get_bus_num(); -#endif - printf("Current bus is %d\n", bus_no); - } else { - bus_no = simple_strtoul(argv[1], NULL, 10); -#if defined(CONFIG_SYS_I2C) - if (bus_no >= CONFIG_SYS_NUM_I2C_BUSES) { - printf("Invalid bus %d\n", bus_no); - return -1; - } -#endif - printf("Setting bus to %d\n", bus_no); -#ifdef CONFIG_DM_I2C - ret = cmd_i2c_set_bus_num(bus_no); -#else - ret = i2c_set_bus_num(bus_no); -#endif - if (ret) - printf("Failure changing bus number (%d)\n", ret); - } - - return ret ? CMD_RET_FAILURE : 0; -} -#endif /* defined(CONFIG_SYS_I2C) */ - -/** - * do_i2c_bus_speed() - Handle the "i2c speed" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - */ -static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - int speed, ret=0; - -#ifdef CONFIG_DM_I2C - struct udevice *bus; - - if (i2c_get_cur_bus(&bus)) - return 1; -#endif - if (argc == 1) { -#ifdef CONFIG_DM_I2C - speed = dm_i2c_get_bus_speed(bus); -#else - speed = i2c_get_bus_speed(); -#endif - /* querying current speed */ - printf("Current bus speed=%d\n", speed); - } else { - speed = simple_strtoul(argv[1], NULL, 10); - printf("Setting bus speed to %d Hz\n", speed); -#ifdef CONFIG_DM_I2C - ret = dm_i2c_set_bus_speed(bus, speed); -#else - ret = i2c_set_bus_speed(speed); -#endif - if (ret) - printf("Failure changing bus speed (%d)\n", ret); - } - - return ret ? CMD_RET_FAILURE : 0; -} - -/** - * do_i2c_mm() - Handle the "i2c mm" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - */ -static int do_i2c_mm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - return mod_i2c_mem (cmdtp, 1, flag, argc, argv); -} - -/** - * do_i2c_nm() - Handle the "i2c nm" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - */ -static int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - return mod_i2c_mem (cmdtp, 0, flag, argc, argv); -} - -/** - * do_i2c_reset() - Handle the "i2c reset" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero always. - */ -static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ -#if defined(CONFIG_DM_I2C) - struct udevice *bus; - - if (i2c_get_cur_bus(&bus)) - return CMD_RET_FAILURE; - if (i2c_deblock(bus)) { - printf("Error: Not supported by the driver\n"); - return CMD_RET_FAILURE; - } -#elif defined(CONFIG_SYS_I2C) - i2c_init(I2C_ADAP->speed, I2C_ADAP->slaveaddr); -#else - i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); -#endif - return 0; -} - -static cmd_tbl_t cmd_i2c_sub[] = { -#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C) - U_BOOT_CMD_MKENT(bus, 1, 1, do_i2c_show_bus, "", ""), -#endif - U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""), -#if defined(CONFIG_SYS_I2C) || \ - defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C) - U_BOOT_CMD_MKENT(dev, 1, 1, do_i2c_bus_num, "", ""), -#endif /* CONFIG_I2C_MULTI_BUS */ -#if defined(CONFIG_I2C_EDID) - U_BOOT_CMD_MKENT(edid, 1, 1, do_edid, "", ""), -#endif /* CONFIG_I2C_EDID */ - U_BOOT_CMD_MKENT(loop, 3, 1, do_i2c_loop, "", ""), - U_BOOT_CMD_MKENT(md, 3, 1, do_i2c_md, "", ""), - U_BOOT_CMD_MKENT(mm, 2, 1, do_i2c_mm, "", ""), - U_BOOT_CMD_MKENT(mw, 3, 1, do_i2c_mw, "", ""), - U_BOOT_CMD_MKENT(nm, 2, 1, do_i2c_nm, "", ""), - U_BOOT_CMD_MKENT(probe, 0, 1, do_i2c_probe, "", ""), - U_BOOT_CMD_MKENT(read, 5, 1, do_i2c_read, "", ""), - U_BOOT_CMD_MKENT(write, 6, 0, do_i2c_write, "", ""), -#ifdef CONFIG_DM_I2C - U_BOOT_CMD_MKENT(flags, 2, 1, do_i2c_flags, "", ""), - U_BOOT_CMD_MKENT(olen, 2, 1, do_i2c_olen, "", ""), -#endif - U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""), -#if defined(CONFIG_CMD_SDRAM) - U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""), -#endif - U_BOOT_CMD_MKENT(speed, 1, 1, do_i2c_bus_speed, "", ""), -}; - -static __maybe_unused void i2c_reloc(void) -{ - static int relocated; - - if (!relocated) { - fixup_cmdtable(cmd_i2c_sub, ARRAY_SIZE(cmd_i2c_sub)); - relocated = 1; - }; -} - -/** - * do_i2c() - Handle the "i2c" command-line command - * @cmdtp: Command data struct pointer - * @flag: Command flag - * @argc: Command-line argument count - * @argv: Array of command-line arguments - * - * Returns zero on success, CMD_RET_USAGE in case of misuse and negative - * on error. - */ -static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) -{ - cmd_tbl_t *c; - -#ifdef CONFIG_NEEDS_MANUAL_RELOC - i2c_reloc(); -#endif - - if (argc < 2) - return CMD_RET_USAGE; - - /* Strip off leading 'i2c' command argument */ - argc--; - argv++; - - c = find_cmd_tbl(argv[0], &cmd_i2c_sub[0], ARRAY_SIZE(cmd_i2c_sub)); - - if (c) - return c->cmd(cmdtp, flag, argc, argv); - else - return CMD_RET_USAGE; -} - -/***************************************************/ -#ifdef CONFIG_SYS_LONGHELP -static char i2c_help_text[] = -#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C) - "bus [muxtype:muxaddr:muxchannel] - show I2C bus info\n" -#endif - "crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n" -#if defined(CONFIG_SYS_I2C) || \ - defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C) - "i2c dev [dev] - show or set current I2C bus\n" -#endif /* CONFIG_I2C_MULTI_BUS */ -#if defined(CONFIG_I2C_EDID) - "i2c edid chip - print EDID configuration information\n" -#endif /* CONFIG_I2C_EDID */ - "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n" - "i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device\n" - "i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)\n" - "i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n" - "i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n" - "i2c probe [address] - test for and show device(s) on the I2C bus\n" - "i2c read chip address[.0, .1, .2] length memaddress - read to memory\n" - "i2c write memaddress chip address[.0, .1, .2] length [-s] - write memory\n" - " to I2C; the -s option selects bulk write in a single transaction\n" -#ifdef CONFIG_DM_I2C - "i2c flags chip [flags] - set or get chip flags\n" - "i2c olen chip [offset_length] - set or get chip offset length\n" -#endif - "i2c reset - re-init the I2C Controller\n" -#if defined(CONFIG_CMD_SDRAM) - "i2c sdram chip - print SDRAM configuration information\n" -#endif - "i2c speed [speed] - show or set I2C bus speed"; -#endif - -U_BOOT_CMD( - i2c, 7, 1, do_i2c, - "I2C sub-system", - i2c_help_text -); |
