X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=common%2Fcmd_i2c.c;h=a7672cf7606367182b85ce766a50cdc5527aaa13;hb=4a8cf3382a6fea5cccc1e2ae61a4601bf26490c3;hp=b51d0c91c504277c627690603e521840c251306d;hpb=fb0070e9101a1f288d7054f7e80b3d808fd7ead2;p=karo-tx-uboot.git diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c index b51d0c91c5..a7672cf760 100644 --- a/common/cmd_i2c.c +++ b/common/cmd_i2c.c @@ -148,13 +148,70 @@ int __def_i2c_set_bus_speed(unsigned int speed) int i2c_set_bus_speed(unsigned int) __attribute__((weak, alias("__def_i2c_set_bus_speed"))); +#define DISP_LINE_LEN 16 + /* * Syntax: - * i2c md {i2c_chip} {addr}{.0, .1, .2} {len} + * i2c read {i2c_chip} {devaddr}{.0, .1, .2} {len} {memaddr} */ -#define DISP_LINE_LEN 16 -int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + u_char chip; + uint devaddr, alen, length; + u_char *memaddr; + int j; + + if (argc != 5) { + cmd_usage(cmdtp); + return 1; + } + + /* + * 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 = 1; + for (j = 0; j < 8; j++) { + if (argv[2][j] == '.') { + alen = argv[2][j+1] - '0'; + if (alen > 3) { + cmd_usage(cmdtp); + return 1; + } + break; + } else if (argv[2][j] == '\0') + break; + } + + /* + * 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); + + if (i2c_read(chip, devaddr, alen, memaddr, length) != 0) { + puts ("Error reading the chip.\n"); + return 1; + } + return 0; +} + +/* + * Syntax: + * i2c md {i2c_chip} {addr}{.0, .1, .2} {len} + */ +static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { u_char chip; uint addr, alen, length; @@ -260,7 +317,7 @@ int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) * Syntax: * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}] */ -int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { uchar chip; ulong addr; @@ -332,7 +389,7 @@ int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) * Syntax: * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count} */ -int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { uchar chip; ulong addr; @@ -535,7 +592,7 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]) * Syntax: * i2c probe {addr}{.0, .1, .2} */ -int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { int j; #if defined(CONFIG_SYS_I2C_NOPROBES) @@ -579,7 +636,7 @@ int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) * {length} - Number of bytes to read * {delay} - A DECIMAL number and defaults to 1000 uSec */ -int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) { u_char chip; ulong alen; @@ -699,7 +756,7 @@ static void decode_bits (u_char const b, char const *str[], int const do_once) * Syntax: * i2c sdram {i2c_chip} */ -int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { enum { unknown, EDO, SDRAM, DDR2 } type; @@ -1176,7 +1233,7 @@ int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) #endif #if defined(CONFIG_I2C_MUX) -int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { int ret=0; @@ -1207,7 +1264,7 @@ int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) #endif /* CONFIG_I2C_MUX */ #if defined(CONFIG_I2C_MULTI_BUS) -int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { int bus_idx, ret=0; @@ -1225,7 +1282,7 @@ int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) } #endif /* CONFIG_I2C_MULTI_BUS */ -int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { int speed, ret=0; @@ -1242,17 +1299,17 @@ int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) return ret; } -int do_i2c_mm(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_mm(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { return mod_i2c_mem (cmdtp, 1, flag, argc, argv); } -int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { return mod_i2c_mem (cmdtp, 0, flag, argc, argv); } -int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); return 0; @@ -1272,6 +1329,7 @@ static cmd_tbl_t cmd_i2c_sub[] = { 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(reset, 0, 1, do_i2c_reset, "", ""), #if defined(CONFIG_CMD_SDRAM) U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""), @@ -1279,7 +1337,7 @@ static cmd_tbl_t cmd_i2c_sub[] = { U_BOOT_CMD_MKENT(speed, 1, 1, do_i2c_bus_speed, "", ""), }; -int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) +static int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { cmd_tbl_t *c; @@ -1315,6 +1373,7 @@ U_BOOT_CMD( "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 - show devices on the I2C bus\n" + "i2c read chip address[.0, .1, .2] length memaddress - read to memory \n" "i2c reset - re-init the I2C Controller\n" #if defined(CONFIG_CMD_SDRAM) "i2c sdram chip - print SDRAM configuration information\n" @@ -1323,7 +1382,6 @@ U_BOOT_CMD( ); #if defined(CONFIG_I2C_MUX) - int i2c_mux_add_device(I2C_MUX_DEVICE *dev) { I2C_MUX_DEVICE *devtmp = i2c_mux_devices;