[J-u-boot.git] / drivers / power / exynos-tmu.c

/*
 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
 *      http://www.samsung.com
 * Akshay Saraswat <[email protected]>
 *
 * EXYNOS - Thermal Management Unit
 *
 * 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 version 2 as
 * published by the Free Software Foundation.
 * 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 <errno.h>
#include <fdtdec.h>
#include <log.h>
#include <tmu.h>
#include <asm/arch/tmu.h>
#include <asm/arch/power.h>

#define TRIMINFO_RELOAD		1
#define CORE_EN			1
#define THERM_TRIP_EN		(1 << 12)

#define INTEN_RISE0		1
#define INTEN_RISE1		(1 << 4)
#define INTEN_RISE2		(1 << 8)
#define INTEN_FALL0		(1 << 16)
#define INTEN_FALL1		(1 << 20)
#define INTEN_FALL2		(1 << 24)

#define TRIM_INFO_MASK		0xff

#define INTCLEAR_RISE0		1
#define INTCLEAR_RISE1		(1 << 4)
#define INTCLEAR_RISE2		(1 << 8)
#define INTCLEAR_FALL0		(1 << 16)
#define INTCLEAR_FALL1		(1 << 20)
#define INTCLEAR_FALL2		(1 << 24)
#define INTCLEARALL		(INTCLEAR_RISE0 | INTCLEAR_RISE1 | \
				 INTCLEAR_RISE2 | INTCLEAR_FALL0 | \
				 INTCLEAR_FALL1 | INTCLEAR_FALL2)

/* Tmeperature threshold values for various thermal events */
struct temperature_params {
	/* minimum value in temperature code range */
	unsigned min_val;
	/* maximum value in temperature code range */
	unsigned max_val;
	/* temperature threshold to start warning */
	unsigned start_warning;
	/* temperature threshold CPU tripping */
	unsigned start_tripping;
	/* temperature threshold for HW tripping */
	unsigned hardware_tripping;
};

/* Pre-defined values and thresholds for calibration of current temperature */
struct tmu_data {
	/* pre-defined temperature thresholds */
	struct temperature_params ts;
	/* pre-defined efuse range minimum value */
	unsigned efuse_min_value;
	/* pre-defined efuse value for temperature calibration */
	unsigned efuse_value;
	/* pre-defined efuse range maximum value */
	unsigned efuse_max_value;
	/* current temperature sensing slope */
	unsigned slope;
};

/* TMU device specific details and status */
struct tmu_info {
	/* base Address for the TMU */
	struct exynos5_tmu_reg *tmu_base;
	/* mux Address for the TMU */
	int tmu_mux;
	/* pre-defined values for calibration and thresholds */
	struct tmu_data data;
	/* value required for triminfo_25 calibration */
	unsigned te1;
	/* value required for triminfo_85 calibration */
	unsigned te2;
	/* Value for measured data calibration */
	int dc_value;
	/* enum value indicating status of the TMU */
	int tmu_state;
};

/* Global struct tmu_info variable to store init values */
static struct tmu_info gbl_info;

/*
 * Get current temperature code from register,
 * then calculate and calibrate it's value
 * in degree celsius.
 *
 * Return:	current temperature of the chip as sensed by TMU
 */
static int get_cur_temp(struct tmu_info *info)
{
	struct exynos5_tmu_reg *reg = info->tmu_base;
	ulong start;
	int cur_temp = 0;

	/*
	 * Temperature code range between min 25 and max 125.
	 * May run more than once for first call as initial sensing
	 * has not yet happened.
	 */
	if (info->tmu_state == TMU_STATUS_NORMAL) {
		start = get_timer(0);
		do {
			cur_temp = readl(&reg->current_temp) & 0xff;
		} while ((cur_temp == 0) || (get_timer(start) > 100));
	}

	if (cur_temp == 0)
		return cur_temp;

	/* Calibrate current temperature */
	cur_temp = cur_temp - info->te1 + info->dc_value;

	return cur_temp;
}

/*
 * Monitors status of the TMU device and exynos temperature
 *
 * @param temp	pointer to the current temperature value
 * Return:	enum tmu_status_t value, code indicating event to execute
 */
enum tmu_status_t tmu_monitor(int *temp)
{
	int cur_temp;
	struct tmu_data *data = &gbl_info.data;

	if (gbl_info.tmu_state == TMU_STATUS_INIT)
		return TMU_STATUS_INIT;

	/* Read current temperature of the SOC */
	cur_temp = get_cur_temp(&gbl_info);

	if (!cur_temp)
		goto out;

	*temp = cur_temp;

	/* Temperature code lies between min 25 and max 125 */
	if ((cur_temp >= data->ts.start_tripping) &&
	    (cur_temp <= data->ts.max_val))
		return TMU_STATUS_TRIPPED;

	if (cur_temp >= data->ts.start_warning)
		return TMU_STATUS_WARNING;

	if ((cur_temp < data->ts.start_warning) &&
	    (cur_temp >= data->ts.min_val))
		return TMU_STATUS_NORMAL;

 out:
	/* Temperature code does not lie between min 25 and max 125 */
	gbl_info.tmu_state = TMU_STATUS_INIT;
	debug("EXYNOS_TMU: Thermal reading failed\n");
	return TMU_STATUS_INIT;
}

/*
 * Get TMU specific pre-defined values from FDT
 *
 * @param info	pointer to the tmu_info struct
 * @param blob  FDT blob
 * Return:	int value, 0 for success
 */
static int get_tmu_fdt_values(struct tmu_info *info, const void *blob)
{
#if CONFIG_IS_ENABLED(OF_CONTROL)
	fdt_addr_t addr;
	int node;
	int error = 0;

	/* Get the node from FDT for TMU */
	node = fdtdec_next_compatible(blob, 0,
				      COMPAT_SAMSUNG_EXYNOS_TMU);
	if (node < 0) {
		debug("EXYNOS_TMU: No node for tmu in device tree\n");
		return -ENODEV;
	}

	/*
	 * Get the pre-defined TMU specific values from FDT.
	 * All of these are expected to be correct otherwise
	 * miscalculation of register values in tmu_setup_parameters
	 * may result in misleading current temperature.
	 */
	addr = fdtdec_get_addr(blob, node, "reg");
	if (addr == FDT_ADDR_T_NONE) {
		debug("%s: Missing tmu-base\n", __func__);
		return -ENODEV;
	}
	info->tmu_base = (struct exynos5_tmu_reg *)addr;

	/* Optional field. */
	info->tmu_mux = fdtdec_get_int(blob,
				node, "samsung,mux", -1);
	/* Take default value as per the user manual b(110) */
	if (info->tmu_mux == -1)
		info->tmu_mux = 0x6;

	info->data.ts.min_val = fdtdec_get_int(blob,
				node, "samsung,min-temp", -1);
	error |= (info->data.ts.min_val == -1);
	info->data.ts.max_val = fdtdec_get_int(blob,
				node, "samsung,max-temp", -1);
	error |= (info->data.ts.max_val == -1);
	info->data.ts.start_warning = fdtdec_get_int(blob,
				node, "samsung,start-warning", -1);
	error |= (info->data.ts.start_warning == -1);
	info->data.ts.start_tripping = fdtdec_get_int(blob,
				node, "samsung,start-tripping", -1);
	error |= (info->data.ts.start_tripping == -1);
	info->data.ts.hardware_tripping = fdtdec_get_int(blob,
				node, "samsung,hw-tripping", -1);
	error |= (info->data.ts.hardware_tripping == -1);
	info->data.efuse_min_value = fdtdec_get_int(blob,
				node, "samsung,efuse-min-value", -1);
	error |= (info->data.efuse_min_value == -1);
	info->data.efuse_value = fdtdec_get_int(blob,
				node, "samsung,efuse-value", -1);
	error |= (info->data.efuse_value == -1);
	info->data.efuse_max_value = fdtdec_get_int(blob,
				node, "samsung,efuse-max-value", -1);
	error |= (info->data.efuse_max_value == -1);
	info->data.slope = fdtdec_get_int(blob,
				node, "samsung,slope", -1);
	error |= (info->data.slope == -1);
	info->dc_value = fdtdec_get_int(blob,
				node, "samsung,dc-value", -1);
	error |= (info->dc_value == -1);

	if (error) {
		debug("fail to get tmu node properties\n");
		return -EINVAL;
	}
#else
	/* Non DT support may never be added. Just in case  */
	return -ENODEV;
#endif

	return 0;
}

/*
 * Calibrate and calculate threshold values and
 * enable interrupt levels
 *
 * @param	info pointer to the tmu_info struct
 */
static void tmu_setup_parameters(struct tmu_info *info)
{
	unsigned te_code, con;
	unsigned warning_code, trip_code, hwtrip_code;
	unsigned cooling_temp;
	unsigned rising_value;
	struct tmu_data *data = &info->data;
	struct exynos5_tmu_reg *reg = info->tmu_base;

	/* Must reload for reading efuse value from triminfo register */
	writel(TRIMINFO_RELOAD, &reg->triminfo_control);

	/* Get the compensation parameter */
	te_code = readl(&reg->triminfo);
	info->te1 = te_code & TRIM_INFO_MASK;
	info->te2 = ((te_code >> 8) & TRIM_INFO_MASK);

	if ((data->efuse_min_value > info->te1) ||
			(info->te1 > data->efuse_max_value)
			||  (info->te2 != 0))
		info->te1 = data->efuse_value;

	/* Get RISING & FALLING Threshold value */
	warning_code = data->ts.start_warning
			+ info->te1 - info->dc_value;
	trip_code = data->ts.start_tripping
			+ info->te1 - info->dc_value;
	hwtrip_code = data->ts.hardware_tripping
			+ info->te1 - info->dc_value;

	cooling_temp = 0;

	rising_value = ((warning_code << 8) |
			(trip_code << 16) |
			(hwtrip_code << 24));

	/* Set interrupt level */
	writel(rising_value, &reg->threshold_temp_rise);
	writel(cooling_temp, &reg->threshold_temp_fall);

	/*
	 * Init TMU control tuning parameters
	 * [28:24] VREF - Voltage reference
	 * [15:13] THERM_TRIP_MODE - Tripping mode
	 * [12] THERM_TRIP_EN - Thermal tripping enable
	 * [11:8] BUF_SLOPE_SEL - Gain of amplifier
	 * [6] THERM_TRIP_BY_TQ_EN - Tripping by TQ pin
	 */
	writel(data->slope, &reg->tmu_control);

	writel(INTCLEARALL, &reg->intclear);

	/* TMU core enable */
	con = readl(&reg->tmu_control);
	con |= THERM_TRIP_EN | CORE_EN | (info->tmu_mux << 20);

	writel(con, &reg->tmu_control);

	/* Enable HW thermal trip */
	set_hw_thermal_trip();

	/* LEV1 LEV2 interrupt enable */
	writel(INTEN_RISE1 | INTEN_RISE2, &reg->inten);
}

/*
 * Initialize TMU device
 *
 * @param blob  FDT blob
 * Return:	int value, 0 for success
 */
int tmu_init(const void *blob)
{
	gbl_info.tmu_state = TMU_STATUS_INIT;
	if (get_tmu_fdt_values(&gbl_info, blob) < 0)
		goto ret;

	tmu_setup_parameters(&gbl_info);
	gbl_info.tmu_state = TMU_STATUS_NORMAL;
ret:
	return gbl_info.tmu_state;
}
Commit	Line	Data
39d182d3 AS	1	/*
	2	* Copyright (c) 2012 Samsung Electronics Co., Ltd.
	3	* http://www.samsung.com
	4	* Akshay Saraswat <[email protected]>
	5	*
	6	* EXYNOS - Thermal Management Unit
	7	*
	8	* See file CREDITS for list of people who contributed to this
	9	* project.
	10	*
	11	* This program is free software; you can redistribute it and/or modify
	12	* it under the terms of the GNU General Public License version 2 as
	13	* published by the Free Software Foundation.
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	17	* MA 02111-1307 USA
	18	*/
	19
	20	#include <common.h>
	21	#include <errno.h>
	22	#include <fdtdec.h>
f7ae49fc	23	#include <log.h>
39d182d3 AS	24	#include <tmu.h>
39d182d3 AS	25	#include <asm/arch/tmu.h>
3a0b1dae	26	#include <asm/arch/power.h>
39d182d3 AS	27
	28	#define TRIMINFO_RELOAD 1
	29	#define CORE_EN 1
3a0b1dae	30	#define THERM_TRIP_EN (1 << 12)
39d182d3 AS	31
	32	#define INTEN_RISE0 1
	33	#define INTEN_RISE1 (1 << 4)
	34	#define INTEN_RISE2 (1 << 8)
	35	#define INTEN_FALL0 (1 << 16)
	36	#define INTEN_FALL1 (1 << 20)
	37	#define INTEN_FALL2 (1 << 24)
	38
	39	#define TRIM_INFO_MASK 0xff
	40
	41	#define INTCLEAR_RISE0 1
	42	#define INTCLEAR_RISE1 (1 << 4)
	43	#define INTCLEAR_RISE2 (1 << 8)
	44	#define INTCLEAR_FALL0 (1 << 16)
	45	#define INTCLEAR_FALL1 (1 << 20)
	46	#define INTCLEAR_FALL2 (1 << 24)
	47	#define INTCLEARALL (INTCLEAR_RISE0 \| INTCLEAR_RISE1 \| \
	48	INTCLEAR_RISE2 \| INTCLEAR_FALL0 \| \
	49	INTCLEAR_FALL1 \| INTCLEAR_FALL2)
	50
	51	/* Tmeperature threshold values for various thermal events */
	52	struct temperature_params {
	53	/* minimum value in temperature code range */
1149ca00	54	unsigned min_val;
39d182d3	55	/* maximum value in temperature code range */
1149ca00	56	unsigned max_val;
39d182d3	57	/* temperature threshold to start warning */
1149ca00	58	unsigned start_warning;
39d182d3	59	/* temperature threshold CPU tripping */
1149ca00	60	unsigned start_tripping;
3a0b1dae	61	/* temperature threshold for HW tripping */
1149ca00	62	unsigned hardware_tripping;
39d182d3 AS	63	};
	64
	65	/* Pre-defined values and thresholds for calibration of current temperature */
	66	struct tmu_data {
	67	/* pre-defined temperature thresholds */
	68	struct temperature_params ts;
	69	/* pre-defined efuse range minimum value */
1149ca00	70	unsigned efuse_min_value;
39d182d3	71	/* pre-defined efuse value for temperature calibration */
1149ca00	72	unsigned efuse_value;
39d182d3	73	/* pre-defined efuse range maximum value */
1149ca00	74	unsigned efuse_max_value;
39d182d3	75	/* current temperature sensing slope */
1149ca00	76	unsigned slope;
39d182d3 AS	77	};
	78
	79	/* TMU device specific details and status */
	80	struct tmu_info {
	81	/* base Address for the TMU */
1149ca00	82	struct exynos5_tmu_reg *tmu_base;
eeb7d6a2 NKC	83	/* mux Address for the TMU */
eeb7d6a2 NKC	84	int tmu_mux;
39d182d3 AS	85	/* pre-defined values for calibration and thresholds */
	86	struct tmu_data data;
	87	/* value required for triminfo_25 calibration */
1149ca00	88	unsigned te1;
39d182d3	89	/* value required for triminfo_85 calibration */
1149ca00	90	unsigned te2;
39d182d3 AS	91	/* Value for measured data calibration */
	92	int dc_value;
	93	/* enum value indicating status of the TMU */
	94	int tmu_state;
	95	};
	96
	97	/* Global struct tmu_info variable to store init values */
	98	static struct tmu_info gbl_info;
	99
	100	/*
	101	* Get current temperature code from register,
	102	* then calculate and calibrate it's value
	103	* in degree celsius.
	104	*
185f812c	105	* Return: current temperature of the chip as sensed by TMU
39d182d3 AS	106	*/
	107	static int get_cur_temp(struct tmu_info *info)
	108	{
1149ca00 NKC	109	struct exynos5_tmu_reg *reg = info->tmu_base;
	110	ulong start;
	111	int cur_temp = 0;
39d182d3 AS	112
	113	/*
	114	* Temperature code range between min 25 and max 125.
	115	* May run more than once for first call as initial sensing
	116	* has not yet happened.
	117	*/
1149ca00 NKC	118	if (info->tmu_state == TMU_STATUS_NORMAL) {
	119	start = get_timer(0);
	120	do {
	121	cur_temp = readl(&reg->current_temp) & 0xff;
	122	} while ((cur_temp == 0) \|\| (get_timer(start) > 100));
	123	}
	124
	125	if (cur_temp == 0)
	126	return cur_temp;
39d182d3 AS	127
	128	/* Calibrate current temperature */
	129	cur_temp = cur_temp - info->te1 + info->dc_value;
	130
	131	return cur_temp;
	132	}
	133
	134	/*
	135	* Monitors status of the TMU device and exynos temperature
	136	*
	137	* @param temp pointer to the current temperature value
185f812c	138	* Return: enum tmu_status_t value, code indicating event to execute
39d182d3 AS	139	*/
	140	enum tmu_status_t tmu_monitor(int *temp)
	141	{
	142	int cur_temp;
	143	struct tmu_data *data = &gbl_info.data;
	144
	145	if (gbl_info.tmu_state == TMU_STATUS_INIT)
	146	return TMU_STATUS_INIT;
	147
	148	/* Read current temperature of the SOC */
	149	cur_temp = get_cur_temp(&gbl_info);
1149ca00 NKC	150
	151	if (!cur_temp)
	152	goto out;
	153
39d182d3 AS	154	*temp = cur_temp;
	155
	156	/* Temperature code lies between min 25 and max 125 */
1149ca00 NKC	157	if ((cur_temp >= data->ts.start_tripping) &&
1149ca00 NKC	158	(cur_temp <= data->ts.max_val))
39d182d3	159	return TMU_STATUS_TRIPPED;
1149ca00 NKC	160
1149ca00 NKC	161	if (cur_temp >= data->ts.start_warning)
39d182d3	162	return TMU_STATUS_WARNING;
1149ca00 NKC	163
	164	if ((cur_temp < data->ts.start_warning) &&
	165	(cur_temp >= data->ts.min_val))
39d182d3	166	return TMU_STATUS_NORMAL;
1149ca00 NKC	167
	168	out:
	169	/* Temperature code does not lie between min 25 and max 125 */
	170	gbl_info.tmu_state = TMU_STATUS_INIT;
	171	debug("EXYNOS_TMU: Thermal reading failed\n");
	172	return TMU_STATUS_INIT;
39d182d3 AS	173	}
	174
	175	/*
	176	* Get TMU specific pre-defined values from FDT
	177	*
	178	* @param info pointer to the tmu_info struct
	179	* @param blob FDT blob
185f812c	180	* Return: int value, 0 for success
39d182d3 AS	181	*/
	182	static int get_tmu_fdt_values(struct tmu_info info, const void blob)
	183	{
0f925822	184	#if CONFIG_IS_ENABLED(OF_CONTROL)
1149ca00	185	fdt_addr_t addr;
39d182d3 AS	186	int node;
	187	int error = 0;
	188
	189	/* Get the node from FDT for TMU */
	190	node = fdtdec_next_compatible(blob, 0,
	191	COMPAT_SAMSUNG_EXYNOS_TMU);
	192	if (node < 0) {
	193	debug("EXYNOS_TMU: No node for tmu in device tree\n");
505cf475	194	return -ENODEV;
39d182d3 AS	195	}
	196
	197	/*
	198	* Get the pre-defined TMU specific values from FDT.
	199	* All of these are expected to be correct otherwise
	200	* miscalculation of register values in tmu_setup_parameters
	201	* may result in misleading current temperature.
	202	*/
1149ca00 NKC	203	addr = fdtdec_get_addr(blob, node, "reg");
1149ca00 NKC	204	if (addr == FDT_ADDR_T_NONE) {
39d182d3	205	debug("%s: Missing tmu-base\n", __func__);
505cf475	206	return -ENODEV;
39d182d3	207	}
1149ca00 NKC	208	info->tmu_base = (struct exynos5_tmu_reg *)addr;
1149ca00 NKC	209
eeb7d6a2 NKC	210	/* Optional field. */
	211	info->tmu_mux = fdtdec_get_int(blob,
	212	node, "samsung,mux", -1);
	213	/* Take default value as per the user manual b(110) */
	214	if (info->tmu_mux == -1)
	215	info->tmu_mux = 0x6;
	216
39d182d3 AS	217	info->data.ts.min_val = fdtdec_get_int(blob,
39d182d3 AS	218	node, "samsung,min-temp", -1);
1149ca00	219	error \|= (info->data.ts.min_val == -1);
39d182d3 AS	220	info->data.ts.max_val = fdtdec_get_int(blob,
39d182d3 AS	221	node, "samsung,max-temp", -1);
1149ca00	222	error \|= (info->data.ts.max_val == -1);
39d182d3 AS	223	info->data.ts.start_warning = fdtdec_get_int(blob,
39d182d3 AS	224	node, "samsung,start-warning", -1);
1149ca00	225	error \|= (info->data.ts.start_warning == -1);
39d182d3 AS	226	info->data.ts.start_tripping = fdtdec_get_int(blob,
39d182d3 AS	227	node, "samsung,start-tripping", -1);
1149ca00	228	error \|= (info->data.ts.start_tripping == -1);
3a0b1dae AS	229	info->data.ts.hardware_tripping = fdtdec_get_int(blob,
3a0b1dae AS	230	node, "samsung,hw-tripping", -1);
1149ca00	231	error \|= (info->data.ts.hardware_tripping == -1);
39d182d3 AS	232	info->data.efuse_min_value = fdtdec_get_int(blob,
39d182d3 AS	233	node, "samsung,efuse-min-value", -1);
1149ca00	234	error \|= (info->data.efuse_min_value == -1);
39d182d3 AS	235	info->data.efuse_value = fdtdec_get_int(blob,
39d182d3 AS	236	node, "samsung,efuse-value", -1);
1149ca00	237	error \|= (info->data.efuse_value == -1);
39d182d3 AS	238	info->data.efuse_max_value = fdtdec_get_int(blob,
39d182d3 AS	239	node, "samsung,efuse-max-value", -1);
1149ca00	240	error \|= (info->data.efuse_max_value == -1);
39d182d3 AS	241	info->data.slope = fdtdec_get_int(blob,
39d182d3 AS	242	node, "samsung,slope", -1);
1149ca00	243	error \|= (info->data.slope == -1);
39d182d3 AS	244	info->dc_value = fdtdec_get_int(blob,
39d182d3 AS	245	node, "samsung,dc-value", -1);
1149ca00	246	error \|= (info->dc_value == -1);
39d182d3	247
1149ca00	248	if (error) {
39d182d3	249	debug("fail to get tmu node properties\n");
505cf475	250	return -EINVAL;
39d182d3	251	}
1149ca00 NKC	252	#else
1149ca00 NKC	253	/* Non DT support may never be added. Just in case */
505cf475	254	return -ENODEV;
39d182d3 AS	255	#endif
	256
	257	return 0;
	258	}
	259
	260	/*
	261	* Calibrate and calculate threshold values and
	262	* enable interrupt levels
	263	*
	264	* @param info pointer to the tmu_info struct
	265	*/
	266	static void tmu_setup_parameters(struct tmu_info *info)
	267	{
1149ca00 NKC	268	unsigned te_code, con;
	269	unsigned warning_code, trip_code, hwtrip_code;
	270	unsigned cooling_temp;
	271	unsigned rising_value;
39d182d3	272	struct tmu_data *data = &info->data;
1149ca00	273	struct exynos5_tmu_reg *reg = info->tmu_base;
39d182d3 AS	274
	275	/* Must reload for reading efuse value from triminfo register */
	276	writel(TRIMINFO_RELOAD, &reg->triminfo_control);
	277
	278	/* Get the compensation parameter */
	279	te_code = readl(&reg->triminfo);
	280	info->te1 = te_code & TRIM_INFO_MASK;
	281	info->te2 = ((te_code >> 8) & TRIM_INFO_MASK);
	282
	283	if ((data->efuse_min_value > info->te1) \|\|
	284	(info->te1 > data->efuse_max_value)
	285	\|\| (info->te2 != 0))
	286	info->te1 = data->efuse_value;
	287
	288	/* Get RISING & FALLING Threshold value */
	289	warning_code = data->ts.start_warning
	290	+ info->te1 - info->dc_value;
	291	trip_code = data->ts.start_tripping
	292	+ info->te1 - info->dc_value;
3a0b1dae AS	293	hwtrip_code = data->ts.hardware_tripping
	294	+ info->te1 - info->dc_value;
	295
39d182d3 AS	296	cooling_temp = 0;
39d182d3 AS	297
3a0b1dae AS	298	rising_value = ((warning_code << 8) \|
	299	(trip_code << 16) \|
	300	(hwtrip_code << 24));
39d182d3 AS	301
	302	/* Set interrupt level */
	303	writel(rising_value, &reg->threshold_temp_rise);
	304	writel(cooling_temp, &reg->threshold_temp_fall);
	305
	306	/*
	307	* Init TMU control tuning parameters
	308	* [28:24] VREF - Voltage reference
	309	* [15:13] THERM_TRIP_MODE - Tripping mode
	310	* [12] THERM_TRIP_EN - Thermal tripping enable
	311	* [11:8] BUF_SLOPE_SEL - Gain of amplifier
	312	* [6] THERM_TRIP_BY_TQ_EN - Tripping by TQ pin
	313	*/
	314	writel(data->slope, &reg->tmu_control);
	315
	316	writel(INTCLEARALL, &reg->intclear);
	317
	318	/* TMU core enable */
	319	con = readl(&reg->tmu_control);
eeb7d6a2	320	con \|= THERM_TRIP_EN \| CORE_EN \| (info->tmu_mux << 20);
39d182d3 AS	321
	322	writel(con, &reg->tmu_control);
	323
3a0b1dae AS	324	/* Enable HW thermal trip */
	325	set_hw_thermal_trip();
	326
	327	/* LEV1 LEV2 interrupt enable */
	328	writel(INTEN_RISE1 \| INTEN_RISE2, &reg->inten);
39d182d3 AS	329	}
	330
	331	/*
	332	* Initialize TMU device
	333	*
	334	* @param blob FDT blob
185f812c	335	* Return: int value, 0 for success
39d182d3 AS	336	*/
	337	int tmu_init(const void *blob)
	338	{
	339	gbl_info.tmu_state = TMU_STATUS_INIT;
	340	if (get_tmu_fdt_values(&gbl_info, blob) < 0)
	341	goto ret;
	342
	343	tmu_setup_parameters(&gbl_info);
	344	gbl_info.tmu_state = TMU_STATUS_NORMAL;
	345	ret:
39d182d3 AS	346	return gbl_info.tmu_state;
39d182d3 AS	347	}