[people/ms/u-boot.git] / 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>
#include <linux/bug.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>
84b8bf6d	15	#include <linux/bug.h>
3863585b	16
bc5478b2	17	#if defined CONFIG_DTT_SENSORS
780f13a9 HS	18	static unsigned long sensor_initialized;
780f13a9 HS	19
b88e7b3c DE	20	static void _initialize_dtt(void)
	21	{
	22	int i;
	23	unsigned char sensors[] = CONFIG_DTT_SENSORS;
	24
	25	for (i = 0; i < sizeof(sensors); i++) {
	26	if ((sensor_initialized & (1 << i)) == 0) {
	27	if (dtt_init_one(sensors[i]) != 0) {
	28	printf("DTT%d: Failed init!\n", i);
	29	continue;
	30	}
	31	sensor_initialized \|= (1 << i);
	32	}
	33	}
	34	}
	35
	36	void dtt_init(void)
	37	{
	38	int old_bus;
	39
	40	/* switch to correct I2C bus */
	41	old_bus = I2C_GET_BUS();
	42	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
	43
	44	_initialize_dtt();
	45
	46	/* switch back to original I2C bus */
	47	I2C_SET_BUS(old_bus);
	48	}
bc5478b2	49	#endif
b88e7b3c	50
bc5478b2	51	int dtt_i2c(void)
3863585b	52	{
bc5478b2	53	#if defined CONFIG_DTT_SENSORS
3863585b WD	54	int i;
3863585b WD	55	unsigned char sensors[] = CONFIG_DTT_SENSORS;
0dc018ec SR	56	int old_bus;
0dc018ec SR	57
780f13a9 HS	58	/* Force a compilation error, if there are more then 32 sensors */
780f13a9 HS	59	BUILD_BUG_ON(sizeof(sensors) > 32);
0dc018ec	60	/* switch to correct I2C bus */
3f4978c7 HS	61	#ifdef CONFIG_SYS_I2C
	62	old_bus = i2c_get_bus_num();
	63	i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
	64	#else
0dc018ec	65	old_bus = I2C_GET_BUS();
6d0f6bcf	66	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
3f4978c7	67	#endif
3863585b	68
b88e7b3c DE	69	_initialize_dtt();
b88e7b3c DE	70
3863585b WD	71	/*
	72	* Loop through sensors, read
	73	* temperature, and output it.
	74	*/
b88e7b3c	75	for (i = 0; i < sizeof(sensors); i++)
780f13a9	76	printf("DTT%d: %i C\n", i + 1, dtt_get_temp(sensors[i]));
0dc018ec SR	77
0dc018ec SR	78	/* switch back to original I2C bus */
3f4978c7 HS	79	#ifdef CONFIG_SYS_I2C
	80	i2c_set_bus_num(old_bus);
	81	#else
0dc018ec	82	I2C_SET_BUS(old_bus);
3f4978c7	83	#endif
bc5478b2	84	#endif
3863585b WD	85
3863585b WD	86	return 0;
bc5478b2 AS	87	}
	88
	89	int dtt_tmu(void)
	90	{
	91	#if defined CONFIG_TMU_CMD_DTT
	92	int cur_temp;
	93
	94	/* Sense and return latest thermal info */
	95	if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
	96	puts("TMU is in unknown state, temperature is invalid\n");
	97	return -1;
	98	}
	99	printf("Current temperature: %u degrees Celsius\n", cur_temp);
	100	#endif
	101	return 0;
	102	}
	103
	104	int do_dtt(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	105	{
	106	int err = 0;
	107
	108	err \|= dtt_i2c();
	109	err \|= dtt_tmu();
	110
	111	return err;
3863585b WD	112	} /* do_dtt() */
3863585b WD	113
8bde7f77 WD	114	/***************************************************/
8bde7f77 WD	115
0d498393 WD	116	U_BOOT_CMD(
0d498393 WD	117	dtt, 1, 1, do_dtt,
a89c33db WD	118	"Read temperature from Digital Thermometer and Thermostat",
a89c33db WD	119	""
8bde7f77	120	);