[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / subdev / iccsense / base.c

/*
 * Copyright 2015 Martin Peres
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Martin Peres
 */
#include "priv.h"

#include <subdev/bios.h>
#include <subdev/bios/extdev.h>
#include <subdev/bios/iccsense.h>
#include <subdev/i2c.h>

static bool
nvkm_iccsense_validate_device(struct i2c_adapter *i2c, u8 addr,
			      enum nvbios_extdev_type type)
{
	switch (type) {
	case NVBIOS_EXTDEV_INA209:
	case NVBIOS_EXTDEV_INA219:
		return nv_rd16i2cr(i2c, addr, 0x0) >= 0;
	case NVBIOS_EXTDEV_INA3221:
		return nv_rd16i2cr(i2c, addr, 0xff) == 0x3220 &&
		       nv_rd16i2cr(i2c, addr, 0xfe) == 0x5449;
	default:
		return false;
	}
}

static int
nvkm_iccsense_poll_lane(struct i2c_adapter *i2c, u8 addr, u8 shunt_reg,
			u8 shunt_shift, u8 bus_reg, u8 bus_shift, u8 shunt,
			u16 lsb)
{
	int vshunt = nv_rd16i2cr(i2c, addr, shunt_reg);
	int vbus = nv_rd16i2cr(i2c, addr, bus_reg);

	if (vshunt < 0 || vbus < 0)
		return -EINVAL;

	vshunt >>= shunt_shift;
	vbus >>= bus_shift;

	return vbus * vshunt * lsb / shunt;
}

static int
nvkm_iccsense_ina2x9_read(struct nvkm_iccsense *iccsense,
                          struct nvkm_iccsense_rail *rail,
			  u8 shunt_reg, u8 bus_reg)
{
	return nvkm_iccsense_poll_lane(rail->sensor->i2c, rail->sensor->addr,
				       shunt_reg, 0, bus_reg, 3, rail->mohm,
				       10 * 4);
}

static int
nvkm_iccsense_ina209_read(struct nvkm_iccsense *iccsense,
			  struct nvkm_iccsense_rail *rail)
{
	return nvkm_iccsense_ina2x9_read(iccsense, rail, 3, 4);
}

static int
nvkm_iccsense_ina219_read(struct nvkm_iccsense *iccsense,
			  struct nvkm_iccsense_rail *rail)
{
	return nvkm_iccsense_ina2x9_read(iccsense, rail, 1, 2);
}

static int
nvkm_iccsense_ina3221_read(struct nvkm_iccsense *iccsense,
			   struct nvkm_iccsense_rail *rail)
{
	return nvkm_iccsense_poll_lane(rail->sensor->i2c, rail->sensor->addr,
				       1 + (rail->idx * 2), 3,
				       2 + (rail->idx * 2), 3, rail->mohm,
				       40 * 8);
}

static void
nvkm_iccsense_ina209_config(struct nvkm_iccsense *iccsense,
			    struct nvkm_iccsense_sensor *sensor)
{
	struct nvkm_subdev *subdev = &iccsense->subdev;
	/* configuration:
	 * 0x0007: 0x0007 shunt and bus continous
	 * 0x0078: 0x0078 128 samples shunt
	 * 0x0780: 0x0780 128 samples bus
	 * 0x1800: 0x0000 +-40 mV shunt range
	 * 0x2000: 0x0000 16V FSR
         */
	u16 value = 0x07ff;
	nvkm_debug(subdev, "config for sensor id %i: 0x%x\n", sensor->id, value);
	nv_wr16i2cr(sensor->i2c, sensor->addr, 0x00, value);
}

static void
nvkm_iccsense_ina3221_config(struct nvkm_iccsense *iccsense,
			     struct nvkm_iccsense_sensor *sensor)
{
	struct nvkm_subdev *subdev = &iccsense->subdev;
	/* configuration:
	 * 0x0007: 0x0007 shunt and bus continous
	 * 0x0031: 0x0000 140 us conversion time shunt
	 * 0x01c0: 0x0000 140 us conversion time bus
	 * 0x0f00: 0x0f00 1024 samples
	 * 0x7000: 0x?000 channels
         */
	u16 value = 0x0e07;
	if (sensor->rail_mask & 0x1)
		value |= 0x1 << 14;
	if (sensor->rail_mask & 0x2)
		value |= 0x1 << 13;
	if (sensor->rail_mask & 0x4)
		value |= 0x1 << 12;
	nvkm_debug(subdev, "config for sensor id %i: 0x%x\n", sensor->id, value);
	nv_wr16i2cr(sensor->i2c, sensor->addr, 0x00, value);
}

static void
nvkm_iccsense_sensor_config(struct nvkm_iccsense *iccsense,
		            struct nvkm_iccsense_sensor *sensor)
{
	switch (sensor->type) {
	case NVBIOS_EXTDEV_INA209:
	case NVBIOS_EXTDEV_INA219:
		nvkm_iccsense_ina209_config(iccsense, sensor);
		break;
	case NVBIOS_EXTDEV_INA3221:
		nvkm_iccsense_ina3221_config(iccsense, sensor);
		break;
	default:
		break;
	}
}

int
nvkm_iccsense_read_all(struct nvkm_iccsense *iccsense)
{
	int result = 0;
	struct nvkm_iccsense_rail *rail;

	if (!iccsense)
		return -EINVAL;

	list_for_each_entry(rail, &iccsense->rails, head) {
		int res;
		if (!rail->read)
			return -ENODEV;

		res = rail->read(iccsense, rail);
		if (res < 0)
			return res;
		result += res;
	}
	return result;
}

static void *
nvkm_iccsense_dtor(struct nvkm_subdev *subdev)
{
	struct nvkm_iccsense *iccsense = nvkm_iccsense(subdev);
	struct nvkm_iccsense_sensor *sensor, *tmps;
	struct nvkm_iccsense_rail *rail, *tmpr;

	list_for_each_entry_safe(sensor, tmps, &iccsense->sensors, head) {
		list_del(&sensor->head);
		kfree(sensor);
	}
	list_for_each_entry_safe(rail, tmpr, &iccsense->rails, head) {
		list_del(&rail->head);
		kfree(rail);
	}

	return iccsense;
}

static struct nvkm_iccsense_sensor*
nvkm_iccsense_create_sensor(struct nvkm_iccsense *iccsense, u8 id)
{

	struct nvkm_subdev *subdev = &iccsense->subdev;
	struct nvkm_bios *bios = subdev->device->bios;
	struct nvkm_i2c *i2c = subdev->device->i2c;
	struct nvbios_extdev_func extdev;
	struct nvkm_i2c_bus *i2c_bus;
	struct nvkm_iccsense_sensor *sensor;
	u8 addr;

	if (!i2c || !bios || nvbios_extdev_parse(bios, id, &extdev))
		return NULL;

	if (extdev.type == 0xff)
		return NULL;

	if (extdev.type != NVBIOS_EXTDEV_INA209 &&
	    extdev.type != NVBIOS_EXTDEV_INA219 &&
	    extdev.type != NVBIOS_EXTDEV_INA3221) {
		iccsense->data_valid = false;
		nvkm_error(subdev, "Unknown sensor type %x, power reading "
			   "disabled\n", extdev.type);
		return NULL;
	}

	if (extdev.bus)
		i2c_bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_SEC);
	else
		i2c_bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_PRI);
	if (!i2c_bus)
		return NULL;

	addr = extdev.addr >> 1;
	if (!nvkm_iccsense_validate_device(&i2c_bus->i2c, addr,
					   extdev.type)) {
		iccsense->data_valid = false;
		nvkm_warn(subdev, "found invalid sensor id: %i, power reading"
			  "might be invalid\n", id);
		return NULL;
	}

	sensor = kmalloc(sizeof(*sensor), GFP_KERNEL);
	if (!sensor)
		return NULL;

	list_add_tail(&sensor->head, &iccsense->sensors);
	sensor->id = id;
	sensor->type = extdev.type;
	sensor->i2c = &i2c_bus->i2c;
	sensor->addr = addr;
	sensor->rail_mask = 0x0;
	return sensor;
}

static struct nvkm_iccsense_sensor*
nvkm_iccsense_get_sensor(struct nvkm_iccsense *iccsense, u8 id)
{
	struct nvkm_iccsense_sensor *sensor;
	list_for_each_entry(sensor, &iccsense->sensors, head) {
		if (sensor->id == id)
			return sensor;
	}
	return nvkm_iccsense_create_sensor(iccsense, id);
}

static int
nvkm_iccsense_oneinit(struct nvkm_subdev *subdev)
{
	struct nvkm_iccsense *iccsense = nvkm_iccsense(subdev);
	struct nvkm_bios *bios = subdev->device->bios;
	struct nvbios_iccsense stbl;
	int i;

	if (!bios || nvbios_iccsense_parse(bios, &stbl) || !stbl.nr_entry)
		return 0;

	iccsense->data_valid = true;
	for (i = 0; i < stbl.nr_entry; ++i) {
		struct pwr_rail_t *r = &stbl.rail[i];
		struct nvkm_iccsense_rail *rail;
		struct nvkm_iccsense_sensor *sensor;

		if (!r->mode || r->resistor_mohm == 0)
			continue;

		sensor = nvkm_iccsense_get_sensor(iccsense, r->extdev_id);
		if (!sensor)
			continue;

		rail = kmalloc(sizeof(*rail), GFP_KERNEL);
		if (!rail)
			return -ENOMEM;

		switch (sensor->type) {
		case NVBIOS_EXTDEV_INA209:
			if (r->rail != 0)
				continue;
			rail->read = nvkm_iccsense_ina209_read;
			break;
		case NVBIOS_EXTDEV_INA219:
			if (r->rail != 0)
				continue;
			rail->read = nvkm_iccsense_ina219_read;
			break;
		case NVBIOS_EXTDEV_INA3221:
			if (r->rail >= 3)
				continue;
			rail->read = nvkm_iccsense_ina3221_read;
			break;
		default:
			continue;
		}

		sensor->rail_mask |= 1 << r->rail;
		rail->sensor = sensor;
		rail->idx = r->rail;
		rail->mohm = r->resistor_mohm;
		list_add_tail(&rail->head, &iccsense->rails);
	}
	return 0;
}

static int
nvkm_iccsense_init(struct nvkm_subdev *subdev)
{
	struct nvkm_iccsense *iccsense = nvkm_iccsense(subdev);
	struct nvkm_iccsense_sensor *sensor;
	list_for_each_entry(sensor, &iccsense->sensors, head)
		nvkm_iccsense_sensor_config(iccsense, sensor);
	return 0;
}

struct nvkm_subdev_func iccsense_func = {
	.oneinit = nvkm_iccsense_oneinit,
	.init = nvkm_iccsense_init,
	.dtor = nvkm_iccsense_dtor,
};

void
nvkm_iccsense_ctor(struct nvkm_device *device, int index,
		   struct nvkm_iccsense *iccsense)
{
	nvkm_subdev_ctor(&iccsense_func, device, index, &iccsense->subdev);
}

int
nvkm_iccsense_new_(struct nvkm_device *device, int index,
		   struct nvkm_iccsense **iccsense)
{
	if (!(*iccsense = kzalloc(sizeof(**iccsense), GFP_KERNEL)))
		return -ENOMEM;
	INIT_LIST_HEAD(&(*iccsense)->sensors);
	INIT_LIST_HEAD(&(*iccsense)->rails);
	nvkm_iccsense_ctor(device, index, *iccsense);
	return 0;
}
Commit	Line	Data
dc06e366 MP	1	/*
	2	* Copyright 2015 Martin Peres
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Martin Peres
	23	*/
	24	#include "priv.h"
	25
b71c0892 KH	26	#include <subdev/bios.h>
	27	#include <subdev/bios/extdev.h>
	28	#include <subdev/bios/iccsense.h>
	29	#include <subdev/i2c.h>
	30
	31	static bool
	32	nvkm_iccsense_validate_device(struct i2c_adapter *i2c, u8 addr,
5f1f07de	33	enum nvbios_extdev_type type)
b71c0892 KH	34	{
	35	switch (type) {
	36	case NVBIOS_EXTDEV_INA209:
	37	case NVBIOS_EXTDEV_INA219:
5f1f07de	38	return nv_rd16i2cr(i2c, addr, 0x0) >= 0;
b71c0892	39	case NVBIOS_EXTDEV_INA3221:
5f1f07de	40	return nv_rd16i2cr(i2c, addr, 0xff) == 0x3220 &&
b71c0892 KH	41	nv_rd16i2cr(i2c, addr, 0xfe) == 0x5449;
	42	default:
	43	return false;
	44	}
	45	}
	46
	47	static int
	48	nvkm_iccsense_poll_lane(struct i2c_adapter *i2c, u8 addr, u8 shunt_reg,
	49	u8 shunt_shift, u8 bus_reg, u8 bus_shift, u8 shunt,
	50	u16 lsb)
	51	{
	52	int vshunt = nv_rd16i2cr(i2c, addr, shunt_reg);
	53	int vbus = nv_rd16i2cr(i2c, addr, bus_reg);
	54
	55	if (vshunt < 0 \|\| vbus < 0)
	56	return -EINVAL;
	57
	58	vshunt >>= shunt_shift;
	59	vbus >>= bus_shift;
	60
	61	return vbus * vshunt * lsb / shunt;
	62	}
	63
	64	static int
	65	nvkm_iccsense_ina2x9_read(struct nvkm_iccsense *iccsense,
	66	struct nvkm_iccsense_rail *rail,
	67	u8 shunt_reg, u8 bus_reg)
	68	{
5f1f07de KH	69	return nvkm_iccsense_poll_lane(rail->sensor->i2c, rail->sensor->addr,
	70	shunt_reg, 0, bus_reg, 3, rail->mohm,
	71	10 * 4);
b71c0892 KH	72	}
	73
	74	static int
	75	nvkm_iccsense_ina209_read(struct nvkm_iccsense *iccsense,
	76	struct nvkm_iccsense_rail *rail)
	77	{
	78	return nvkm_iccsense_ina2x9_read(iccsense, rail, 3, 4);
	79	}
	80
	81	static int
	82	nvkm_iccsense_ina219_read(struct nvkm_iccsense *iccsense,
	83	struct nvkm_iccsense_rail *rail)
	84	{
	85	return nvkm_iccsense_ina2x9_read(iccsense, rail, 1, 2);
	86	}
	87
	88	static int
	89	nvkm_iccsense_ina3221_read(struct nvkm_iccsense *iccsense,
	90	struct nvkm_iccsense_rail *rail)
	91	{
5f1f07de KH	92	return nvkm_iccsense_poll_lane(rail->sensor->i2c, rail->sensor->addr,
	93	1 + (rail->idx * 2), 3,
	94	2 + (rail->idx * 2), 3, rail->mohm,
b71c0892 KH	95	40 * 8);
	96	}
	97
2e9a43f9 KH	98	static void
	99	nvkm_iccsense_ina209_config(struct nvkm_iccsense *iccsense,
	100	struct nvkm_iccsense_sensor *sensor)
	101	{
	102	struct nvkm_subdev *subdev = &iccsense->subdev;
	103	/* configuration:
	104	* 0x0007: 0x0007 shunt and bus continous
	105	* 0x0078: 0x0078 128 samples shunt
	106	* 0x0780: 0x0780 128 samples bus
	107	* 0x1800: 0x0000 +-40 mV shunt range
	108	* 0x2000: 0x0000 16V FSR
	109	*/
	110	u16 value = 0x07ff;
	111	nvkm_debug(subdev, "config for sensor id %i: 0x%x\n", sensor->id, value);
	112	nv_wr16i2cr(sensor->i2c, sensor->addr, 0x00, value);
	113	}
	114
	115	static void
	116	nvkm_iccsense_ina3221_config(struct nvkm_iccsense *iccsense,
	117	struct nvkm_iccsense_sensor *sensor)
	118	{
	119	struct nvkm_subdev *subdev = &iccsense->subdev;
	120	/* configuration:
	121	* 0x0007: 0x0007 shunt and bus continous
	122	* 0x0031: 0x0000 140 us conversion time shunt
	123	* 0x01c0: 0x0000 140 us conversion time bus
	124	* 0x0f00: 0x0f00 1024 samples
	125	* 0x7000: 0x?000 channels
	126	*/
	127	u16 value = 0x0e07;
	128	if (sensor->rail_mask & 0x1)
	129	value \|= 0x1 << 14;
	130	if (sensor->rail_mask & 0x2)
	131	value \|= 0x1 << 13;
	132	if (sensor->rail_mask & 0x4)
	133	value \|= 0x1 << 12;
	134	nvkm_debug(subdev, "config for sensor id %i: 0x%x\n", sensor->id, value);
	135	nv_wr16i2cr(sensor->i2c, sensor->addr, 0x00, value);
	136	}
	137
	138	static void
	139	nvkm_iccsense_sensor_config(struct nvkm_iccsense *iccsense,
	140	struct nvkm_iccsense_sensor *sensor)
	141	{
	142	switch (sensor->type) {
	143	case NVBIOS_EXTDEV_INA209:
	144	case NVBIOS_EXTDEV_INA219:
	145	nvkm_iccsense_ina209_config(iccsense, sensor);
	146	break;
	147	case NVBIOS_EXTDEV_INA3221:
	148	nvkm_iccsense_ina3221_config(iccsense, sensor);
	149	break;
	150	default:
	151	break;
	152	}
	153	}
	154
b71c0892	155	int
d03e0f27	156	nvkm_iccsense_read_all(struct nvkm_iccsense *iccsense)
b71c0892	157	{
92224e75 KH	158	int result = 0;
92224e75 KH	159	struct nvkm_iccsense_rail *rail;
b71c0892	160
d03e0f27	161	if (!iccsense)
b71c0892 KH	162	return -EINVAL;
b71c0892 KH	163
92224e75	164	list_for_each_entry(rail, &iccsense->rails, head) {
d03e0f27	165	int res;
d03e0f27 KH	166	if (!rail->read)
	167	return -ENODEV;
	168
	169	res = rail->read(iccsense, rail);
92224e75	170	if (res < 0)
b71c0892	171	return res;
92224e75	172	result += res;
b71c0892 KH	173	}
	174	return result;
	175	}
	176
	177	static void *
	178	nvkm_iccsense_dtor(struct nvkm_subdev *subdev)
	179	{
	180	struct nvkm_iccsense *iccsense = nvkm_iccsense(subdev);
5f1f07de KH	181	struct nvkm_iccsense_sensor sensor, tmps;
5f1f07de KH	182	struct nvkm_iccsense_rail rail, tmpr;
b71c0892	183
5f1f07de KH	184	list_for_each_entry_safe(sensor, tmps, &iccsense->sensors, head) {
	185	list_del(&sensor->head);
	186	kfree(sensor);
	187	}
	188	list_for_each_entry_safe(rail, tmpr, &iccsense->rails, head) {
92224e75 KH	189	list_del(&rail->head);
	190	kfree(rail);
	191	}
b71c0892 KH	192
	193	return iccsense;
	194	}
	195
5f1f07de KH	196	static struct nvkm_iccsense_sensor*
	197	nvkm_iccsense_create_sensor(struct nvkm_iccsense *iccsense, u8 id)
	198	{
	199
	200	struct nvkm_subdev *subdev = &iccsense->subdev;
	201	struct nvkm_bios *bios = subdev->device->bios;
	202	struct nvkm_i2c *i2c = subdev->device->i2c;
	203	struct nvbios_extdev_func extdev;
	204	struct nvkm_i2c_bus *i2c_bus;
	205	struct nvkm_iccsense_sensor *sensor;
	206	u8 addr;
	207
	208	if (!i2c \|\| !bios \|\| nvbios_extdev_parse(bios, id, &extdev))
	209	return NULL;
	210
	211	if (extdev.type == 0xff)
	212	return NULL;
	213
	214	if (extdev.type != NVBIOS_EXTDEV_INA209 &&
	215	extdev.type != NVBIOS_EXTDEV_INA219 &&
	216	extdev.type != NVBIOS_EXTDEV_INA3221) {
	217	iccsense->data_valid = false;
	218	nvkm_error(subdev, "Unknown sensor type %x, power reading "
	219	"disabled\n", extdev.type);
	220	return NULL;
	221	}
	222
	223	if (extdev.bus)
	224	i2c_bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_SEC);
	225	else
	226	i2c_bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_PRI);
	227	if (!i2c_bus)
	228	return NULL;
	229
	230	addr = extdev.addr >> 1;
	231	if (!nvkm_iccsense_validate_device(&i2c_bus->i2c, addr,
	232	extdev.type)) {
	233	iccsense->data_valid = false;
	234	nvkm_warn(subdev, "found invalid sensor id: %i, power reading"
	235	"might be invalid\n", id);
	236	return NULL;
	237	}
	238
	239	sensor = kmalloc(sizeof(*sensor), GFP_KERNEL);
	240	if (!sensor)
	241	return NULL;
	242
	243	list_add_tail(&sensor->head, &iccsense->sensors);
	244	sensor->id = id;
	245	sensor->type = extdev.type;
	246	sensor->i2c = &i2c_bus->i2c;
	247	sensor->addr = addr;
	248	sensor->rail_mask = 0x0;
	249	return sensor;
	250	}
	251
	252	static struct nvkm_iccsense_sensor*
	253	nvkm_iccsense_get_sensor(struct nvkm_iccsense *iccsense, u8 id)
	254	{
	255	struct nvkm_iccsense_sensor *sensor;
	256	list_for_each_entry(sensor, &iccsense->sensors, head) {
	257	if (sensor->id == id)
	258	return sensor;
	259	}
260	return nvkm_iccsense_create_sensor(iccsense, id);
261	}
262
b71c0892 KH	263	static int
	264	nvkm_iccsense_oneinit(struct nvkm_subdev *subdev)
	265	{
	266	struct nvkm_iccsense *iccsense = nvkm_iccsense(subdev);
	267	struct nvkm_bios *bios = subdev->device->bios;
b71c0892 KH	268	struct nvbios_iccsense stbl;
	269	int i;
	270
5f1f07de	271	if (!bios \|\| nvbios_iccsense_parse(bios, &stbl) \|\| !stbl.nr_entry)
b71c0892 KH	272	return 0;
b71c0892 KH	273
b71c0892 KH	274	iccsense->data_valid = true;
	275	for (i = 0; i < stbl.nr_entry; ++i) {
	276	struct pwr_rail_t *r = &stbl.rail[i];
b71c0892	277	struct nvkm_iccsense_rail *rail;
5f1f07de	278	struct nvkm_iccsense_sensor *sensor;
b71c0892 KH	279
	280	if (!r->mode \|\| r->resistor_mohm == 0)
	281	continue;
	282
5f1f07de KH	283	sensor = nvkm_iccsense_get_sensor(iccsense, r->extdev_id);
5f1f07de KH	284	if (!sensor)
b71c0892 KH	285	continue;
b71c0892 KH	286
92224e75 KH	287	rail = kmalloc(sizeof(*rail), GFP_KERNEL);
	288	if (!rail)
	289	return -ENOMEM;
	290
5f1f07de	291	switch (sensor->type) {
b71c0892	292	case NVBIOS_EXTDEV_INA209:
5f1f07de KH	293	if (r->rail != 0)
5f1f07de KH	294	continue;
b71c0892 KH	295	rail->read = nvkm_iccsense_ina209_read;
	296	break;
	297	case NVBIOS_EXTDEV_INA219:
5f1f07de KH	298	if (r->rail != 0)
5f1f07de KH	299	continue;
b71c0892 KH	300	rail->read = nvkm_iccsense_ina219_read;
	301	break;
	302	case NVBIOS_EXTDEV_INA3221:
5f1f07de KH	303	if (r->rail >= 3)
5f1f07de KH	304	continue;
b71c0892 KH	305	rail->read = nvkm_iccsense_ina3221_read;
b71c0892 KH	306	break;
5f1f07de KH	307	default:
5f1f07de KH	308	continue;
b71c0892 KH	309	}
b71c0892 KH	310
5f1f07de KH	311	sensor->rail_mask \|= 1 << r->rail;
	312	rail->sensor = sensor;
	313	rail->idx = r->rail;
b71c0892	314	rail->mohm = r->resistor_mohm;
92224e75	315	list_add_tail(&rail->head, &iccsense->rails);
b71c0892 KH	316	}
	317	return 0;
	318	}
	319
2e9a43f9 KH	320	static int
	321	nvkm_iccsense_init(struct nvkm_subdev *subdev)
	322	{
	323	struct nvkm_iccsense *iccsense = nvkm_iccsense(subdev);
	324	struct nvkm_iccsense_sensor *sensor;
	325	list_for_each_entry(sensor, &iccsense->sensors, head)
	326	nvkm_iccsense_sensor_config(iccsense, sensor);
	327	return 0;
	328	}
	329
b71c0892 KH	330	struct nvkm_subdev_func iccsense_func = {
b71c0892 KH	331	.oneinit = nvkm_iccsense_oneinit,
2e9a43f9	332	.init = nvkm_iccsense_init,
b71c0892 KH	333	.dtor = nvkm_iccsense_dtor,
b71c0892 KH	334	};
dc06e366 MP	335
	336	void
	337	nvkm_iccsense_ctor(struct nvkm_device *device, int index,
	338	struct nvkm_iccsense *iccsense)
	339	{
56d06fa2	340	nvkm_subdev_ctor(&iccsense_func, device, index, &iccsense->subdev);
dc06e366 MP	341	}
	342
	343	int
	344	nvkm_iccsense_new_(struct nvkm_device *device, int index,
	345	struct nvkm_iccsense **iccsense)
	346	{
	347	if (!(iccsense = kzalloc(sizeof(*iccsense), GFP_KERNEL)))
	348	return -ENOMEM;
5f1f07de	349	INIT_LIST_HEAD(&(*iccsense)->sensors);
92224e75	350	INIT_LIST_HEAD(&(*iccsense)->rails);
dc06e366 MP	351	nvkm_iccsense_ctor(device, index, *iccsense);
	352	return 0;
	353	}