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

/*
 * (C) Copyright 2001
 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * 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
 */

#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 */
	old_bus = I2C_GET_BUS();
	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);

	_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 */
	I2C_SET_BUS(old_bus);
#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	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <config.h>
	26	#include <command.h>
3863585b	27
3863585b	28	#include <dtt.h>
0dc018ec	29	#include <i2c.h>
bc5478b2	30	#include <tmu.h>
3863585b	31
bc5478b2	32	#if defined CONFIG_DTT_SENSORS
780f13a9 HS	33	static unsigned long sensor_initialized;
780f13a9 HS	34
b88e7b3c DE	35	static void _initialize_dtt(void)
	36	{
	37	int i;
	38	unsigned char sensors[] = CONFIG_DTT_SENSORS;
	39
	40	for (i = 0; i < sizeof(sensors); i++) {
	41	if ((sensor_initialized & (1 << i)) == 0) {
	42	if (dtt_init_one(sensors[i]) != 0) {
	43	printf("DTT%d: Failed init!\n", i);
	44	continue;
	45	}
	46	sensor_initialized \|= (1 << i);
	47	}
	48	}
	49	}
	50
	51	void dtt_init(void)
	52	{
	53	int old_bus;
	54
	55	/* switch to correct I2C bus */
	56	old_bus = I2C_GET_BUS();
	57	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
	58
	59	_initialize_dtt();
	60
	61	/* switch back to original I2C bus */
	62	I2C_SET_BUS(old_bus);
	63	}
bc5478b2	64	#endif
b88e7b3c	65
bc5478b2	66	int dtt_i2c(void)
3863585b	67	{
bc5478b2	68	#if defined CONFIG_DTT_SENSORS
3863585b WD	69	int i;
3863585b WD	70	unsigned char sensors[] = CONFIG_DTT_SENSORS;
0dc018ec SR	71	int old_bus;
0dc018ec SR	72
780f13a9 HS	73	/* Force a compilation error, if there are more then 32 sensors */
780f13a9 HS	74	BUILD_BUG_ON(sizeof(sensors) > 32);
0dc018ec SR	75	/* switch to correct I2C bus */
0dc018ec SR	76	old_bus = I2C_GET_BUS();
6d0f6bcf	77	I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
3863585b	78
b88e7b3c DE	79	_initialize_dtt();
b88e7b3c DE	80
3863585b WD	81	/*
	82	* Loop through sensors, read
	83	* temperature, and output it.
	84	*/
b88e7b3c	85	for (i = 0; i < sizeof(sensors); i++)
780f13a9	86	printf("DTT%d: %i C\n", i + 1, dtt_get_temp(sensors[i]));
0dc018ec SR	87
	88	/* switch back to original I2C bus */
	89	I2C_SET_BUS(old_bus);
bc5478b2	90	#endif
3863585b WD	91
3863585b WD	92	return 0;
bc5478b2 AS	93	}
	94
	95	int dtt_tmu(void)
	96	{
	97	#if defined CONFIG_TMU_CMD_DTT
	98	int cur_temp;
	99
	100	/* Sense and return latest thermal info */
	101	if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
	102	puts("TMU is in unknown state, temperature is invalid\n");
	103	return -1;
	104	}
	105	printf("Current temperature: %u degrees Celsius\n", cur_temp);
	106	#endif
	107	return 0;
	108	}
	109
	110	int do_dtt(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
	111	{
	112	int err = 0;
	113
	114	err \|= dtt_i2c();
	115	err \|= dtt_tmu();
	116
	117	return err;
3863585b WD	118	} /* do_dtt() */
3863585b WD	119
8bde7f77 WD	120	/***************************************************/
8bde7f77 WD	121
0d498393 WD	122	U_BOOT_CMD(
0d498393 WD	123	dtt, 1, 1, do_dtt,
a89c33db WD	124	"Read temperature from Digital Thermometer and Thermostat",
a89c33db WD	125	""
8bde7f77	126	);