[people/ms/u-boot.git] / common / cmd_dtt.c

/*
 * (C) Copyright 2001
 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <config.h>
#include <command.h>

#include <dtt.h>
#include <i2c.h>
#include <tmu.h>

#if defined CONFIG_DTT_SENSORS
static unsigned long sensor_initialized;

static void _initialize_dtt(void)
{
	int i;
	unsigned char sensors[] = CONFIG_DTT_SENSORS;

	for (i = 0; i < sizeof(sensors); i++) {
		if ((sensor_initialized & (1 << i)) == 0) {
			if (dtt_init_one(sensors[i]) != 0) {
				printf("DTT%d: Failed init!\n", i);
				continue;
			}
			sensor_initialized |= (1 << i);
		}
	}
}

void dtt_init(void)
{
	int old_bus;

	/* switch to correct I2C bus */
	old_bus = I2C_GET_BUS();
	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);

	_initialize_dtt();

	/* switch back to original I2C bus */
	I2C_SET_BUS(old_bus);
}
#endif

int dtt_i2c(void)
{
#if defined CONFIG_DTT_SENSORS
	int i;
	unsigned char sensors[] = CONFIG_DTT_SENSORS;
	int old_bus;

	/* Force a compilation error, if there are more then 32 sensors */
	BUILD_BUG_ON(sizeof(sensors) > 32);
	/* switch to correct I2C bus */
#ifdef CONFIG_SYS_I2C
	old_bus = i2c_get_bus_num();
	i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
#else
	old_bus = I2C_GET_BUS();
	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
#endif

	_initialize_dtt();

	/*
	 * Loop through sensors, read
	 * temperature, and output it.
	 */
	for (i = 0; i < sizeof(sensors); i++)
		printf("DTT%d: %i C\n", i + 1, dtt_get_temp(sensors[i]));

	/* switch back to original I2C bus */
#ifdef CONFIG_SYS_I2C
	i2c_set_bus_num(old_bus);
#else
	I2C_SET_BUS(old_bus);
#endif
#endif

	return 0;
}

int dtt_tmu(void)
{
#if defined CONFIG_TMU_CMD_DTT
	int cur_temp;

	/* Sense and return latest thermal info */
	if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
		puts("TMU is in unknown state, temperature is invalid\n");
		return -1;
	}
	printf("Current temperature: %u degrees Celsius\n", cur_temp);
#endif
	return 0;
}

int do_dtt(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
	int err = 0;

	err |= dtt_i2c();
	err |= dtt_tmu();

	return err;
}	/* do_dtt() */

/***************************************************/

U_BOOT_CMD(
	  dtt,	1,	1,	do_dtt,
	  "Read temperature from Digital Thermometer and Thermostat",
	  ""
);
Commit	Line	Data
3863585b WD	1	/*
	2	* (C) Copyright 2001
	3	* Erik Theisen, Wave 7 Optics, etheisen@mindspring.com
	4	*
3765b3e7	5	* SPDX-License-Identifier: GPL-2.0+
3863585b WD	6	*/
	7
	8	#include <common.h>
	9	#include <config.h>
	10	#include <command.h>
3863585b	11
3863585b	12	#include <dtt.h>
0dc018ec	13	#include <i2c.h>
bc5478b2	14	#include <tmu.h>
3863585b	15
bc5478b2	16	#if defined CONFIG_DTT_SENSORS
780f13a9 HS	17	static unsigned long sensor_initialized;
780f13a9 HS	18
b88e7b3c DE	19	static void _initialize_dtt(void)
	20	{
	21	int i;
	22	unsigned char sensors[] = CONFIG_DTT_SENSORS;
	23
	24	for (i = 0; i < sizeof(sensors); i++) {
	25	if ((sensor_initialized & (1 << i)) == 0) {
	26	if (dtt_init_one(sensors[i]) != 0) {
	27	printf("DTT%d: Failed init!\n", i);
	28	continue;
	29	}
	30	sensor_initialized \|= (1 << i);
	31	}
	32	}
	33	}
	34
	35	void dtt_init(void)
	36	{
	37	int old_bus;
	38
	39	/* switch to correct I2C bus */
	40	old_bus = I2C_GET_BUS();
	41	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
	42
	43	_initialize_dtt();
	44
	45	/* switch back to original I2C bus */
	46	I2C_SET_BUS(old_bus);
	47	}
bc5478b2	48	#endif
b88e7b3c	49
bc5478b2	50	int dtt_i2c(void)
3863585b	51	{
bc5478b2	52	#if defined CONFIG_DTT_SENSORS
3863585b WD	53	int i;
3863585b WD	54	unsigned char sensors[] = CONFIG_DTT_SENSORS;
0dc018ec SR	55	int old_bus;
0dc018ec SR	56
780f13a9 HS	57	/* Force a compilation error, if there are more then 32 sensors */
780f13a9 HS	58	BUILD_BUG_ON(sizeof(sensors) > 32);
0dc018ec	59	/* switch to correct I2C bus */
3f4978c7 HS	60	#ifdef CONFIG_SYS_I2C
	61	old_bus = i2c_get_bus_num();
	62	i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
	63	#else
0dc018ec	64	old_bus = I2C_GET_BUS();
6d0f6bcf	65	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
3f4978c7	66	#endif
3863585b	67
b88e7b3c DE	68	_initialize_dtt();
b88e7b3c DE	69
3863585b WD	70	/*
	71	* Loop through sensors, read
	72	* temperature, and output it.
	73	*/
b88e7b3c	74	for (i = 0; i < sizeof(sensors); i++)
780f13a9	75	printf("DTT%d: %i C\n", i + 1, dtt_get_temp(sensors[i]));
0dc018ec SR	76
0dc018ec SR	77	/* switch back to original I2C bus */
3f4978c7 HS	78	#ifdef CONFIG_SYS_I2C
	79	i2c_set_bus_num(old_bus);
	80	#else
0dc018ec	81	I2C_SET_BUS(old_bus);
3f4978c7	82	#endif
bc5478b2	83	#endif
3863585b WD	84
3863585b WD	85	return 0;
bc5478b2 AS	86	}
	87
	88	int dtt_tmu(void)
	89	{
	90	#if defined CONFIG_TMU_CMD_DTT
	91	int cur_temp;
	92
	93	/* Sense and return latest thermal info */
	94	if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
	95	puts("TMU is in unknown state, temperature is invalid\n");
	96	return -1;
	97	}
	98	printf("Current temperature: %u degrees Celsius\n", cur_temp);
	99	#endif
	100	return 0;
	101	}
	102
	103	int do_dtt(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	104	{
	105	int err = 0;
	106
	107	err \|= dtt_i2c();
	108	err \|= dtt_tmu();
	109
	110	return err;
3863585b WD	111	} /* do_dtt() */
3863585b WD	112
8bde7f77 WD	113	/***************************************************/
8bde7f77 WD	114
0d498393 WD	115	U_BOOT_CMD(
0d498393 WD	116	dtt, 1, 1, do_dtt,
a89c33db WD	117	"Read temperature from Digital Thermometer and Thermostat",
a89c33db WD	118	""
8bde7f77	119	);