diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/misc/ds4510.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/misc/ds4510.c | 423 |
1 files changed, 0 insertions, 423 deletions
diff --git a/qemu/roms/u-boot/drivers/misc/ds4510.c b/qemu/roms/u-boot/drivers/misc/ds4510.c deleted file mode 100644 index aa893c35f..000000000 --- a/qemu/roms/u-boot/drivers/misc/ds4510.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * Copyright 2008 Extreme Engineering Solutions, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * Version 2 as published by the Free Software Foundation. - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -/* - * Driver for DS4510, a CPU supervisor with integrated EEPROM, SRAM, - * and 4 programmable non-volatile GPIO pins. - */ - -#include <common.h> -#include <i2c.h> -#include <command.h> -#include <ds4510.h> - -/* Default to an address that hopefully won't corrupt other i2c devices */ -#ifndef CONFIG_SYS_I2C_DS4510_ADDR -#define CONFIG_SYS_I2C_DS4510_ADDR (~0) -#endif - -enum { - DS4510_CMD_INFO, - DS4510_CMD_DEVICE, - DS4510_CMD_NV, - DS4510_CMD_RSTDELAY, - DS4510_CMD_OUTPUT, - DS4510_CMD_INPUT, - DS4510_CMD_PULLUP, - DS4510_CMD_EEPROM, - DS4510_CMD_SEEPROM, - DS4510_CMD_SRAM, -}; - -/* - * Write to DS4510, taking page boundaries into account - */ -int ds4510_mem_write(uint8_t chip, int offset, uint8_t *buf, int count) -{ - int wrlen; - int i = 0; - - do { - wrlen = DS4510_EEPROM_PAGE_SIZE - - DS4510_EEPROM_PAGE_OFFSET(offset); - if (count < wrlen) - wrlen = count; - if (i2c_write(chip, offset, 1, &buf[i], wrlen)) - return -1; - - /* - * This delay isn't needed for SRAM writes but shouldn't delay - * things too much, so do it unconditionally for simplicity - */ - udelay(DS4510_EEPROM_PAGE_WRITE_DELAY_MS * 1000); - count -= wrlen; - offset += wrlen; - i += wrlen; - } while (count > 0); - - return 0; -} - -/* - * General read from DS4510 - */ -int ds4510_mem_read(uint8_t chip, int offset, uint8_t *buf, int count) -{ - return i2c_read(chip, offset, 1, buf, count); -} - -/* - * Write SEE bit in config register. - * nv = 0 - Writes to SEEPROM registers behave like EEPROM - * nv = 1 - Writes to SEEPROM registers behave like SRAM - */ -int ds4510_see_write(uint8_t chip, uint8_t nv) -{ - uint8_t data; - - if (i2c_read(chip, DS4510_CFG, 1, &data, 1)) - return -1; - - if (nv) /* Treat SEEPROM bits as EEPROM */ - data &= ~DS4510_CFG_SEE; - else /* Treat SEEPROM bits as SRAM */ - data |= DS4510_CFG_SEE; - - return ds4510_mem_write(chip, DS4510_CFG, &data, 1); -} - -/* - * Write de-assertion of reset signal delay - */ -int ds4510_rstdelay_write(uint8_t chip, uint8_t delay) -{ - uint8_t data; - - if (i2c_read(chip, DS4510_RSTDELAY, 1, &data, 1)) - return -1; - - data &= ~DS4510_RSTDELAY_MASK; - data |= delay & DS4510_RSTDELAY_MASK; - - return ds4510_mem_write(chip, DS4510_RSTDELAY, &data, 1); -} - -/* - * Write pullup characteristics of IO pins - */ -int ds4510_pullup_write(uint8_t chip, uint8_t val) -{ - val &= DS4510_IO_MASK; - - return ds4510_mem_write(chip, DS4510_PULLUP, (uint8_t *)&val, 1); -} - -/* - * Read pullup characteristics of IO pins - */ -int ds4510_pullup_read(uint8_t chip) -{ - uint8_t val; - - if (i2c_read(chip, DS4510_PULLUP, 1, &val, 1)) - return -1; - - return val & DS4510_IO_MASK; -} - -/* - * Write drive level of IO pins - */ -int ds4510_gpio_write(uint8_t chip, uint8_t val) -{ - uint8_t data; - int i; - - for (i = 0; i < DS4510_NUM_IO; i++) { - if (i2c_read(chip, DS4510_IO0 - i, 1, &data, 1)) - return -1; - - if (val & (0x1 << i)) - data |= 0x1; - else - data &= ~0x1; - - if (ds4510_mem_write(chip, DS4510_IO0 - i, &data, 1)) - return -1; - } - - return 0; -} - -/* - * Read drive level of IO pins - */ -int ds4510_gpio_read(uint8_t chip) -{ - uint8_t data; - int val = 0; - int i; - - for (i = 0; i < DS4510_NUM_IO; i++) { - if (i2c_read(chip, DS4510_IO0 - i, 1, &data, 1)) - return -1; - - if (data & 1) - val |= (1 << i); - } - - return val; -} - -/* - * Read physical level of IO pins - */ -int ds4510_gpio_read_val(uint8_t chip) -{ - uint8_t val; - - if (i2c_read(chip, DS4510_IO_STATUS, 1, &val, 1)) - return -1; - - return val & DS4510_IO_MASK; -} - -#ifdef CONFIG_CMD_DS4510 -#ifdef CONFIG_CMD_DS4510_INFO -/* - * Display DS4510 information - */ -static int ds4510_info(uint8_t chip) -{ - int i; - int tmp; - uint8_t data; - - printf("DS4510 @ 0x%x:\n\n", chip); - - if (i2c_read(chip, DS4510_RSTDELAY, 1, &data, 1)) - return -1; - printf("rstdelay = 0x%x\n\n", data & DS4510_RSTDELAY_MASK); - - if (i2c_read(chip, DS4510_CFG, 1, &data, 1)) - return -1; - printf("config = 0x%x\n", data); - printf(" /ready = %d\n", data & DS4510_CFG_READY ? 1 : 0); - printf(" trip pt = %d\n", data & DS4510_CFG_TRIP_POINT ? 1 : 0); - printf(" rst sts = %d\n", data & DS4510_CFG_RESET ? 1 : 0); - printf(" /see = %d\n", data & DS4510_CFG_SEE ? 1 : 0); - printf(" swrst = %d\n\n", data & DS4510_CFG_SWRST ? 1 : 0); - - printf("gpio pins: 3210\n"); - printf("---------------\n"); - printf("pullup "); - - tmp = ds4510_pullup_read(chip); - if (tmp == -1) - return tmp; - for (i = DS4510_NUM_IO - 1; i >= 0; i--) - printf("%d", (tmp & (1 << i)) ? 1 : 0); - printf("\n"); - - printf("driven "); - tmp = ds4510_gpio_read(chip); - if (tmp == -1) - return -1; - for (i = DS4510_NUM_IO - 1; i >= 0; i--) - printf("%d", (tmp & (1 << i)) ? 1 : 0); - printf("\n"); - - printf("read "); - tmp = ds4510_gpio_read_val(chip); - if (tmp == -1) - return -1; - for (i = DS4510_NUM_IO - 1; i >= 0; i--) - printf("%d", (tmp & (1 << i)) ? 1 : 0); - printf("\n"); - - return 0; -} -#endif /* CONFIG_CMD_DS4510_INFO */ - -cmd_tbl_t cmd_ds4510[] = { - U_BOOT_CMD_MKENT(device, 3, 0, (void *)DS4510_CMD_DEVICE, "", ""), - U_BOOT_CMD_MKENT(nv, 3, 0, (void *)DS4510_CMD_NV, "", ""), - U_BOOT_CMD_MKENT(output, 4, 0, (void *)DS4510_CMD_OUTPUT, "", ""), - U_BOOT_CMD_MKENT(input, 3, 0, (void *)DS4510_CMD_INPUT, "", ""), - U_BOOT_CMD_MKENT(pullup, 4, 0, (void *)DS4510_CMD_PULLUP, "", ""), -#ifdef CONFIG_CMD_DS4510_INFO - U_BOOT_CMD_MKENT(info, 2, 0, (void *)DS4510_CMD_INFO, "", ""), -#endif -#ifdef CONFIG_CMD_DS4510_RST - U_BOOT_CMD_MKENT(rstdelay, 3, 0, (void *)DS4510_CMD_RSTDELAY, "", ""), -#endif -#ifdef CONFIG_CMD_DS4510_MEM - U_BOOT_CMD_MKENT(eeprom, 6, 0, (void *)DS4510_CMD_EEPROM, "", ""), - U_BOOT_CMD_MKENT(seeprom, 6, 0, (void *)DS4510_CMD_SEEPROM, "", ""), - U_BOOT_CMD_MKENT(sram, 6, 0, (void *)DS4510_CMD_SRAM, "", ""), -#endif -}; - -int do_ds4510(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - static uint8_t chip = CONFIG_SYS_I2C_DS4510_ADDR; - cmd_tbl_t *c; - ulong ul_arg2 = 0; - ulong ul_arg3 = 0; - int tmp; -#ifdef CONFIG_CMD_DS4510_MEM - ulong addr; - ulong off; - ulong cnt; - int end; - int (*rw_func)(uint8_t, int, uint8_t *, int); -#endif - - c = find_cmd_tbl(argv[1], cmd_ds4510, ARRAY_SIZE(cmd_ds4510)); - - /* All commands but "device" require 'maxargs' arguments */ - if (!c || !((argc == (c->maxargs)) || - (((int)c->cmd == DS4510_CMD_DEVICE) && - (argc == (c->maxargs - 1))))) { - return cmd_usage(cmdtp); - } - - /* arg2 used as chip addr and pin number */ - if (argc > 2) - ul_arg2 = simple_strtoul(argv[2], NULL, 16); - - /* arg3 used as output/pullup value */ - if (argc > 3) - ul_arg3 = simple_strtoul(argv[3], NULL, 16); - - switch ((int)c->cmd) { - case DS4510_CMD_DEVICE: - if (argc == 3) - chip = ul_arg2; - printf("Current device address: 0x%x\n", chip); - return 0; - case DS4510_CMD_NV: - return ds4510_see_write(chip, ul_arg2); - case DS4510_CMD_OUTPUT: - tmp = ds4510_gpio_read(chip); - if (tmp == -1) - return -1; - if (ul_arg3) - tmp |= (1 << ul_arg2); - else - tmp &= ~(1 << ul_arg2); - return ds4510_gpio_write(chip, tmp); - case DS4510_CMD_INPUT: - tmp = ds4510_gpio_read_val(chip); - if (tmp == -1) - return -1; - return (tmp & (1 << ul_arg2)) != 0; - case DS4510_CMD_PULLUP: - tmp = ds4510_pullup_read(chip); - if (tmp == -1) - return -1; - if (ul_arg3) - tmp |= (1 << ul_arg2); - else - tmp &= ~(1 << ul_arg2); - return ds4510_pullup_write(chip, tmp); -#ifdef CONFIG_CMD_DS4510_INFO - case DS4510_CMD_INFO: - return ds4510_info(chip); -#endif -#ifdef CONFIG_CMD_DS4510_RST - case DS4510_CMD_RSTDELAY: - return ds4510_rstdelay_write(chip, ul_arg2); -#endif -#ifdef CONFIG_CMD_DS4510_MEM - case DS4510_CMD_EEPROM: - end = DS4510_EEPROM + DS4510_EEPROM_SIZE; - off = DS4510_EEPROM; - break; - case DS4510_CMD_SEEPROM: - end = DS4510_SEEPROM + DS4510_SEEPROM_SIZE; - off = DS4510_SEEPROM; - break; - case DS4510_CMD_SRAM: - end = DS4510_SRAM + DS4510_SRAM_SIZE; - off = DS4510_SRAM; - break; -#endif - default: - /* We should never get here... */ - return 1; - } - -#ifdef CONFIG_CMD_DS4510_MEM - /* Only eeprom, seeprom, and sram commands should make it here */ - if (strcmp(argv[2], "read") == 0) - rw_func = ds4510_mem_read; - else if (strcmp(argv[2], "write") == 0) - rw_func = ds4510_mem_write; - else - return cmd_usage(cmdtp); - - addr = simple_strtoul(argv[3], NULL, 16); - off += simple_strtoul(argv[4], NULL, 16); - cnt = simple_strtoul(argv[5], NULL, 16); - - if ((off + cnt) > end) { - printf("ERROR: invalid len\n"); - return -1; - } - - return rw_func(chip, off, (uint8_t *)addr, cnt); -#endif -} - -U_BOOT_CMD( - ds4510, 6, 1, do_ds4510, - "ds4510 eeprom/seeprom/sram/gpio access", - "device [dev]\n" - " - show or set current device address\n" -#ifdef CONFIG_CMD_DS4510_INFO - "ds4510 info\n" - " - display ds4510 info\n" -#endif - "ds4510 output pin 0|1\n" - " - set pin low or high-Z\n" - "ds4510 input pin\n" - " - read value of pin\n" - "ds4510 pullup pin 0|1\n" - " - disable/enable pullup on specified pin\n" - "ds4510 nv 0|1\n" - " - make gpio and seeprom writes volatile/non-volatile" -#ifdef CONFIG_CMD_DS4510_RST - "\n" - "ds4510 rstdelay 0-3\n" - " - set reset output delay" -#endif -#ifdef CONFIG_CMD_DS4510_MEM - "\n" - "ds4510 eeprom read addr off cnt\n" - "ds4510 eeprom write addr off cnt\n" - " - read/write 'cnt' bytes at EEPROM offset 'off'\n" - "ds4510 seeprom read addr off cnt\n" - "ds4510 seeprom write addr off cnt\n" - " - read/write 'cnt' bytes at SRAM-shadowed EEPROM offset 'off'\n" - "ds4510 sram read addr off cnt\n" - "ds4510 sram write addr off cnt\n" - " - read/write 'cnt' bytes at SRAM offset 'off'" -#endif -); -#endif /* CONFIG_CMD_DS4510 */ |