1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
29d2ecfb7SGuenter Roeck /*
39d2ecfb7SGuenter Roeck * Hardware monitoring driver for Analog Devices ADM1275 Hot-Swap Controller
49d2ecfb7SGuenter Roeck * and Digital Power Monitor
59d2ecfb7SGuenter Roeck *
69d2ecfb7SGuenter Roeck * Copyright (c) 2011 Ericsson AB.
74ff0ce22SGuenter Roeck * Copyright (c) 2018 Guenter Roeck
89d2ecfb7SGuenter Roeck */
99d2ecfb7SGuenter Roeck
109d2ecfb7SGuenter Roeck #include <linux/kernel.h>
119d2ecfb7SGuenter Roeck #include <linux/module.h>
129d2ecfb7SGuenter Roeck #include <linux/init.h>
139d2ecfb7SGuenter Roeck #include <linux/err.h>
149d2ecfb7SGuenter Roeck #include <linux/slab.h>
159d2ecfb7SGuenter Roeck #include <linux/i2c.h>
1699b41608SGuenter Roeck #include <linux/bitops.h>
17c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) #include <linux/bitfield.h>
18c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) #include <linux/log2.h>
199d2ecfb7SGuenter Roeck #include "pmbus.h"
209d2ecfb7SGuenter Roeck
21*91630090SJose Ramon San Buenaventura enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1281, adm1293, adm1294 };
2268a40382SGuenter Roeck
2368a40382SGuenter Roeck #define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0)
2468a40382SGuenter Roeck #define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5)
2568a40382SGuenter Roeck #define ADM1293_MFR_STATUS_VAUX_OV_WARN BIT(6)
265cf231a3SGuenter Roeck
27c576e30cSGuenter Roeck #define ADM1275_PEAK_IOUT 0xd0
28c576e30cSGuenter Roeck #define ADM1275_PEAK_VIN 0xd1
29c576e30cSGuenter Roeck #define ADM1275_PEAK_VOUT 0xd2
30dd5219ceSGuenter Roeck #define ADM1275_PMON_CONTROL 0xd3
319d2ecfb7SGuenter Roeck #define ADM1275_PMON_CONFIG 0xd4
329d2ecfb7SGuenter Roeck
33dd5219ceSGuenter Roeck #define ADM1275_CONVERT_EN BIT(0)
34dd5219ceSGuenter Roeck
3599b41608SGuenter Roeck #define ADM1275_VIN_VOUT_SELECT BIT(6)
3699b41608SGuenter Roeck #define ADM1275_VRANGE BIT(5)
3799b41608SGuenter Roeck #define ADM1075_IRANGE_50 BIT(4)
3899b41608SGuenter Roeck #define ADM1075_IRANGE_25 BIT(3)
3999b41608SGuenter Roeck #define ADM1075_IRANGE_MASK (BIT(3) | BIT(4))
409d2ecfb7SGuenter Roeck
414ff0ce22SGuenter Roeck #define ADM1272_IRANGE BIT(0)
424ff0ce22SGuenter Roeck
43b153a0bbSGuenter Roeck #define ADM1278_TSFILT BIT(15)
44709066acSGuenter Roeck #define ADM1278_TEMP1_EN BIT(3)
45709066acSGuenter Roeck #define ADM1278_VIN_EN BIT(2)
46709066acSGuenter Roeck #define ADM1278_VOUT_EN BIT(1)
47709066acSGuenter Roeck
48b153a0bbSGuenter Roeck #define ADM1278_PMON_DEFCONFIG (ADM1278_VOUT_EN | ADM1278_TEMP1_EN | ADM1278_TSFILT)
49b153a0bbSGuenter Roeck
5068a40382SGuenter Roeck #define ADM1293_IRANGE_25 0
5168a40382SGuenter Roeck #define ADM1293_IRANGE_50 BIT(6)
5268a40382SGuenter Roeck #define ADM1293_IRANGE_100 BIT(7)
5368a40382SGuenter Roeck #define ADM1293_IRANGE_200 (BIT(6) | BIT(7))
5468a40382SGuenter Roeck #define ADM1293_IRANGE_MASK (BIT(6) | BIT(7))
5568a40382SGuenter Roeck
5668a40382SGuenter Roeck #define ADM1293_VIN_SEL_012 BIT(2)
5768a40382SGuenter Roeck #define ADM1293_VIN_SEL_074 BIT(3)
5868a40382SGuenter Roeck #define ADM1293_VIN_SEL_210 (BIT(2) | BIT(3))
5968a40382SGuenter Roeck #define ADM1293_VIN_SEL_MASK (BIT(2) | BIT(3))
6068a40382SGuenter Roeck
6168a40382SGuenter Roeck #define ADM1293_VAUX_EN BIT(1)
6268a40382SGuenter Roeck
63709066acSGuenter Roeck #define ADM1278_PEAK_TEMP 0xd7
64c5e67636SGuenter Roeck #define ADM1275_IOUT_WARN2_LIMIT 0xd7
65c5e67636SGuenter Roeck #define ADM1275_DEVICE_CONFIG 0xd8
66c5e67636SGuenter Roeck
6799b41608SGuenter Roeck #define ADM1275_IOUT_WARN2_SELECT BIT(4)
68c5e67636SGuenter Roeck
695cf231a3SGuenter Roeck #define ADM1276_PEAK_PIN 0xda
7092711269SGuenter Roeck #define ADM1075_READ_VAUX 0xdd
7192711269SGuenter Roeck #define ADM1075_VAUX_OV_WARN_LIMIT 0xde
7292711269SGuenter Roeck #define ADM1075_VAUX_UV_WARN_LIMIT 0xdf
7368a40382SGuenter Roeck #define ADM1293_IOUT_MIN 0xe3
7468a40382SGuenter Roeck #define ADM1293_PIN_MIN 0xe4
7592711269SGuenter Roeck #define ADM1075_VAUX_STATUS 0xf6
7692711269SGuenter Roeck
7799b41608SGuenter Roeck #define ADM1075_VAUX_OV_WARN BIT(7)
7899b41608SGuenter Roeck #define ADM1075_VAUX_UV_WARN BIT(6)
7992711269SGuenter Roeck
807d45deb3SGuenter Roeck #define ADM1275_VI_AVG_SHIFT 0
817d45deb3SGuenter Roeck #define ADM1275_VI_AVG_MASK GENMASK(ADM1275_VI_AVG_SHIFT + 2, \
827d45deb3SGuenter Roeck ADM1275_VI_AVG_SHIFT)
83c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) #define ADM1275_SAMPLES_AVG_MAX 128
84c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
857d45deb3SGuenter Roeck #define ADM1278_PWR_AVG_SHIFT 11
867d45deb3SGuenter Roeck #define ADM1278_PWR_AVG_MASK GENMASK(ADM1278_PWR_AVG_SHIFT + 2, \
877d45deb3SGuenter Roeck ADM1278_PWR_AVG_SHIFT)
887d45deb3SGuenter Roeck #define ADM1278_VI_AVG_SHIFT 8
897d45deb3SGuenter Roeck #define ADM1278_VI_AVG_MASK GENMASK(ADM1278_VI_AVG_SHIFT + 2, \
907d45deb3SGuenter Roeck ADM1278_VI_AVG_SHIFT)
917d45deb3SGuenter Roeck
92c5e67636SGuenter Roeck struct adm1275_data {
935cf231a3SGuenter Roeck int id;
94c5e67636SGuenter Roeck bool have_oc_fault;
959048539bSGuenter Roeck bool have_uc_fault;
969048539bSGuenter Roeck bool have_vout;
979048539bSGuenter Roeck bool have_vaux_status;
9868a40382SGuenter Roeck bool have_mfr_vaux_status;
9968a40382SGuenter Roeck bool have_iout_min;
10068a40382SGuenter Roeck bool have_pin_min;
1019048539bSGuenter Roeck bool have_pin_max;
102709066acSGuenter Roeck bool have_temp_max;
1037d45deb3SGuenter Roeck bool have_power_sampling;
104c5e67636SGuenter Roeck struct pmbus_driver_info info;
105c5e67636SGuenter Roeck };
106c5e67636SGuenter Roeck
107c5e67636SGuenter Roeck #define to_adm1275_data(x) container_of(x, struct adm1275_data, info)
108c5e67636SGuenter Roeck
109904b296fSGuenter Roeck struct coefficients {
110904b296fSGuenter Roeck s16 m;
111904b296fSGuenter Roeck s16 b;
112904b296fSGuenter Roeck s16 R;
113904b296fSGuenter Roeck };
114904b296fSGuenter Roeck
115904b296fSGuenter Roeck static const struct coefficients adm1075_coefficients[] = {
116904b296fSGuenter Roeck [0] = { 27169, 0, -1 }, /* voltage */
117904b296fSGuenter Roeck [1] = { 806, 20475, -1 }, /* current, irange25 */
118904b296fSGuenter Roeck [2] = { 404, 20475, -1 }, /* current, irange50 */
1196faecba0SShikhar Dogra [3] = { 8549, 0, -1 }, /* power, irange25 */
1206faecba0SShikhar Dogra [4] = { 4279, 0, -1 }, /* power, irange50 */
121904b296fSGuenter Roeck };
122904b296fSGuenter Roeck
1234ff0ce22SGuenter Roeck static const struct coefficients adm1272_coefficients[] = {
1244ff0ce22SGuenter Roeck [0] = { 6770, 0, -2 }, /* voltage, vrange 60V */
1254ff0ce22SGuenter Roeck [1] = { 4062, 0, -2 }, /* voltage, vrange 100V */
1264ff0ce22SGuenter Roeck [2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */
1274ff0ce22SGuenter Roeck [3] = { 663, 20480, -1 }, /* current, vsense range 30mV */
1284ff0ce22SGuenter Roeck [4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */
1294ff0ce22SGuenter Roeck [5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */
1304ff0ce22SGuenter Roeck [6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */
1314ff0ce22SGuenter Roeck [7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */
1324ff0ce22SGuenter Roeck [8] = { 42, 31871, -1 }, /* temperature */
1334ff0ce22SGuenter Roeck
1344ff0ce22SGuenter Roeck };
1354ff0ce22SGuenter Roeck
136904b296fSGuenter Roeck static const struct coefficients adm1275_coefficients[] = {
137904b296fSGuenter Roeck [0] = { 19199, 0, -2 }, /* voltage, vrange set */
138904b296fSGuenter Roeck [1] = { 6720, 0, -1 }, /* voltage, vrange not set */
139904b296fSGuenter Roeck [2] = { 807, 20475, -1 }, /* current */
140904b296fSGuenter Roeck };
141904b296fSGuenter Roeck
142904b296fSGuenter Roeck static const struct coefficients adm1276_coefficients[] = {
143904b296fSGuenter Roeck [0] = { 19199, 0, -2 }, /* voltage, vrange set */
144904b296fSGuenter Roeck [1] = { 6720, 0, -1 }, /* voltage, vrange not set */
145904b296fSGuenter Roeck [2] = { 807, 20475, -1 }, /* current */
146904b296fSGuenter Roeck [3] = { 6043, 0, -2 }, /* power, vrange set */
147904b296fSGuenter Roeck [4] = { 2115, 0, -1 }, /* power, vrange not set */
148904b296fSGuenter Roeck };
149904b296fSGuenter Roeck
150709066acSGuenter Roeck static const struct coefficients adm1278_coefficients[] = {
151709066acSGuenter Roeck [0] = { 19599, 0, -2 }, /* voltage */
152709066acSGuenter Roeck [1] = { 800, 20475, -1 }, /* current */
153709066acSGuenter Roeck [2] = { 6123, 0, -2 }, /* power */
154709066acSGuenter Roeck [3] = { 42, 31880, -1 }, /* temperature */
155709066acSGuenter Roeck };
156709066acSGuenter Roeck
15768a40382SGuenter Roeck static const struct coefficients adm1293_coefficients[] = {
15868a40382SGuenter Roeck [0] = { 3333, -1, 0 }, /* voltage, vrange 1.2V */
15968a40382SGuenter Roeck [1] = { 5552, -5, -1 }, /* voltage, vrange 7.4V */
16068a40382SGuenter Roeck [2] = { 19604, -50, -2 }, /* voltage, vrange 21V */
16168a40382SGuenter Roeck [3] = { 8000, -100, -2 }, /* current, irange25 */
16268a40382SGuenter Roeck [4] = { 4000, -100, -2 }, /* current, irange50 */
16368a40382SGuenter Roeck [5] = { 20000, -1000, -3 }, /* current, irange100 */
16468a40382SGuenter Roeck [6] = { 10000, -1000, -3 }, /* current, irange200 */
16568a40382SGuenter Roeck [7] = { 10417, 0, -1 }, /* power, 1.2V, irange25 */
16668a40382SGuenter Roeck [8] = { 5208, 0, -1 }, /* power, 1.2V, irange50 */
16768a40382SGuenter Roeck [9] = { 26042, 0, -2 }, /* power, 1.2V, irange100 */
16868a40382SGuenter Roeck [10] = { 13021, 0, -2 }, /* power, 1.2V, irange200 */
16968a40382SGuenter Roeck [11] = { 17351, 0, -2 }, /* power, 7.4V, irange25 */
17068a40382SGuenter Roeck [12] = { 8676, 0, -2 }, /* power, 7.4V, irange50 */
17168a40382SGuenter Roeck [13] = { 4338, 0, -2 }, /* power, 7.4V, irange100 */
17268a40382SGuenter Roeck [14] = { 21689, 0, -3 }, /* power, 7.4V, irange200 */
17368a40382SGuenter Roeck [15] = { 6126, 0, -2 }, /* power, 21V, irange25 */
17468a40382SGuenter Roeck [16] = { 30631, 0, -3 }, /* power, 21V, irange50 */
17568a40382SGuenter Roeck [17] = { 15316, 0, -3 }, /* power, 21V, irange100 */
17668a40382SGuenter Roeck [18] = { 7658, 0, -3 }, /* power, 21V, irange200 */
17768a40382SGuenter Roeck };
17868a40382SGuenter Roeck
adm1275_read_samples(const struct adm1275_data * data,struct i2c_client * client,bool is_power)17998ac8af4SGuenter Roeck static int adm1275_read_samples(const struct adm1275_data *data,
1807d45deb3SGuenter Roeck struct i2c_client *client, bool is_power)
181c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) {
1827d45deb3SGuenter Roeck int shift, ret;
1837d45deb3SGuenter Roeck u16 mask;
184c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
1857d45deb3SGuenter Roeck /*
1867d45deb3SGuenter Roeck * The PMON configuration register is a 16-bit register only on chips
1877d45deb3SGuenter Roeck * supporting power average sampling. On other chips it is an 8-bit
1887d45deb3SGuenter Roeck * register.
1897d45deb3SGuenter Roeck */
1907d45deb3SGuenter Roeck if (data->have_power_sampling) {
191c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG);
1927d45deb3SGuenter Roeck mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK;
1937d45deb3SGuenter Roeck shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT;
1947d45deb3SGuenter Roeck } else {
1957d45deb3SGuenter Roeck ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
1967d45deb3SGuenter Roeck mask = ADM1275_VI_AVG_MASK;
1977d45deb3SGuenter Roeck shift = ADM1275_VI_AVG_SHIFT;
1987d45deb3SGuenter Roeck }
199c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0)
200c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) return ret;
201c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
2027d45deb3SGuenter Roeck return (ret & mask) >> shift;
203c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) }
204c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
adm1275_write_pmon_config(const struct adm1275_data * data,struct i2c_client * client,u16 word)2057d45deb3SGuenter Roeck static int adm1275_write_pmon_config(const struct adm1275_data *data,
20698ac8af4SGuenter Roeck struct i2c_client *client, u16 word)
20798ac8af4SGuenter Roeck {
208dd5219ceSGuenter Roeck int ret, ret2;
209dd5219ceSGuenter Roeck
210dd5219ceSGuenter Roeck ret = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONTROL, 0);
211dd5219ceSGuenter Roeck if (ret)
212dd5219ceSGuenter Roeck return ret;
21398ac8af4SGuenter Roeck
21498ac8af4SGuenter Roeck if (data->have_power_sampling)
21598ac8af4SGuenter Roeck ret = i2c_smbus_write_word_data(client, ADM1275_PMON_CONFIG,
21698ac8af4SGuenter Roeck word);
21798ac8af4SGuenter Roeck else
21898ac8af4SGuenter Roeck ret = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONFIG,
21998ac8af4SGuenter Roeck word);
22098ac8af4SGuenter Roeck
221dd5219ceSGuenter Roeck /*
222dd5219ceSGuenter Roeck * We still want to re-enable conversions if writing into
223dd5219ceSGuenter Roeck * ADM1275_PMON_CONFIG failed.
224dd5219ceSGuenter Roeck */
225dd5219ceSGuenter Roeck ret2 = i2c_smbus_write_byte_data(client, ADM1275_PMON_CONTROL,
226dd5219ceSGuenter Roeck ADM1275_CONVERT_EN);
227dd5219ceSGuenter Roeck if (!ret)
228dd5219ceSGuenter Roeck ret = ret2;
229dd5219ceSGuenter Roeck
23098ac8af4SGuenter Roeck return ret;
23198ac8af4SGuenter Roeck }
23298ac8af4SGuenter Roeck
adm1275_write_samples(const struct adm1275_data * data,struct i2c_client * client,bool is_power,u16 word)23398ac8af4SGuenter Roeck static int adm1275_write_samples(const struct adm1275_data *data,
2347d45deb3SGuenter Roeck struct i2c_client *client,
2357d45deb3SGuenter Roeck bool is_power, u16 word)
236c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) {
2377d45deb3SGuenter Roeck int shift, ret;
2387d45deb3SGuenter Roeck u16 mask;
239c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
2407d45deb3SGuenter Roeck if (data->have_power_sampling) {
241c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = i2c_smbus_read_word_data(client, ADM1275_PMON_CONFIG);
2427d45deb3SGuenter Roeck mask = is_power ? ADM1278_PWR_AVG_MASK : ADM1278_VI_AVG_MASK;
2437d45deb3SGuenter Roeck shift = is_power ? ADM1278_PWR_AVG_SHIFT : ADM1278_VI_AVG_SHIFT;
2447d45deb3SGuenter Roeck } else {
2457d45deb3SGuenter Roeck ret = i2c_smbus_read_byte_data(client, ADM1275_PMON_CONFIG);
2467d45deb3SGuenter Roeck mask = ADM1275_VI_AVG_MASK;
2477d45deb3SGuenter Roeck shift = ADM1275_VI_AVG_SHIFT;
2487d45deb3SGuenter Roeck }
249c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0)
250c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) return ret;
251c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
2527d45deb3SGuenter Roeck word = (ret & ~mask) | ((word << shift) & mask);
253c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
25498ac8af4SGuenter Roeck return adm1275_write_pmon_config(data, client, word);
255c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) }
256c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw)
adm1275_read_word_data(struct i2c_client * client,int page,int phase,int reg)25743f33b6eSGuenter Roeck static int adm1275_read_word_data(struct i2c_client *client, int page,
25843f33b6eSGuenter Roeck int phase, int reg)
259c576e30cSGuenter Roeck {
260c5e67636SGuenter Roeck const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
261c5e67636SGuenter Roeck const struct adm1275_data *data = to_adm1275_data(info);
2625cf231a3SGuenter Roeck int ret = 0;
263c576e30cSGuenter Roeck
264ecb29abdSGuenter Roeck if (page > 0)
265c5e67636SGuenter Roeck return -ENXIO;
266c576e30cSGuenter Roeck
267c576e30cSGuenter Roeck switch (reg) {
268c5e67636SGuenter Roeck case PMBUS_IOUT_UC_FAULT_LIMIT:
2699048539bSGuenter Roeck if (!data->have_uc_fault)
2709048539bSGuenter Roeck return -ENXIO;
27143f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
27243f33b6eSGuenter Roeck ADM1275_IOUT_WARN2_LIMIT);
273c5e67636SGuenter Roeck break;
274c5e67636SGuenter Roeck case PMBUS_IOUT_OC_FAULT_LIMIT:
2759048539bSGuenter Roeck if (!data->have_oc_fault)
2769048539bSGuenter Roeck return -ENXIO;
27743f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
27843f33b6eSGuenter Roeck ADM1275_IOUT_WARN2_LIMIT);
279c5e67636SGuenter Roeck break;
28092711269SGuenter Roeck case PMBUS_VOUT_OV_WARN_LIMIT:
2819048539bSGuenter Roeck if (data->have_vout)
2829048539bSGuenter Roeck return -ENODATA;
28343f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
28492711269SGuenter Roeck ADM1075_VAUX_OV_WARN_LIMIT);
28592711269SGuenter Roeck break;
28692711269SGuenter Roeck case PMBUS_VOUT_UV_WARN_LIMIT:
2879048539bSGuenter Roeck if (data->have_vout)
2889048539bSGuenter Roeck return -ENODATA;
28943f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
29092711269SGuenter Roeck ADM1075_VAUX_UV_WARN_LIMIT);
29192711269SGuenter Roeck break;
29292711269SGuenter Roeck case PMBUS_READ_VOUT:
2939048539bSGuenter Roeck if (data->have_vout)
2949048539bSGuenter Roeck return -ENODATA;
29543f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
29643f33b6eSGuenter Roeck ADM1075_READ_VAUX);
29792711269SGuenter Roeck break;
29868a40382SGuenter Roeck case PMBUS_VIRT_READ_IOUT_MIN:
29968a40382SGuenter Roeck if (!data->have_iout_min)
30068a40382SGuenter Roeck return -ENXIO;
30143f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
30243f33b6eSGuenter Roeck ADM1293_IOUT_MIN);
30368a40382SGuenter Roeck break;
304c576e30cSGuenter Roeck case PMBUS_VIRT_READ_IOUT_MAX:
30543f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
30643f33b6eSGuenter Roeck ADM1275_PEAK_IOUT);
307c576e30cSGuenter Roeck break;
308c576e30cSGuenter Roeck case PMBUS_VIRT_READ_VOUT_MAX:
30943f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
31043f33b6eSGuenter Roeck ADM1275_PEAK_VOUT);
311c576e30cSGuenter Roeck break;
312c576e30cSGuenter Roeck case PMBUS_VIRT_READ_VIN_MAX:
31343f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
31443f33b6eSGuenter Roeck ADM1275_PEAK_VIN);
315c576e30cSGuenter Roeck break;
31668a40382SGuenter Roeck case PMBUS_VIRT_READ_PIN_MIN:
31768a40382SGuenter Roeck if (!data->have_pin_min)
31868a40382SGuenter Roeck return -ENXIO;
31943f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
32043f33b6eSGuenter Roeck ADM1293_PIN_MIN);
32168a40382SGuenter Roeck break;
3225cf231a3SGuenter Roeck case PMBUS_VIRT_READ_PIN_MAX:
3239048539bSGuenter Roeck if (!data->have_pin_max)
3249048539bSGuenter Roeck return -ENXIO;
32543f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
32643f33b6eSGuenter Roeck ADM1276_PEAK_PIN);
3275cf231a3SGuenter Roeck break;
328709066acSGuenter Roeck case PMBUS_VIRT_READ_TEMP_MAX:
329709066acSGuenter Roeck if (!data->have_temp_max)
330709066acSGuenter Roeck return -ENXIO;
33143f33b6eSGuenter Roeck ret = pmbus_read_word_data(client, 0, 0xff,
33243f33b6eSGuenter Roeck ADM1278_PEAK_TEMP);
333709066acSGuenter Roeck break;
334c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_IOUT_HISTORY:
335c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VOUT_HISTORY:
336c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VIN_HISTORY:
3375cf231a3SGuenter Roeck break;
3385cf231a3SGuenter Roeck case PMBUS_VIRT_RESET_PIN_HISTORY:
3399048539bSGuenter Roeck if (!data->have_pin_max)
3409048539bSGuenter Roeck return -ENXIO;
341c576e30cSGuenter Roeck break;
342709066acSGuenter Roeck case PMBUS_VIRT_RESET_TEMP_HISTORY:
343709066acSGuenter Roeck if (!data->have_temp_max)
344709066acSGuenter Roeck return -ENXIO;
345709066acSGuenter Roeck break;
346c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_POWER_SAMPLES:
3477d45deb3SGuenter Roeck if (!data->have_power_sampling)
3487d45deb3SGuenter Roeck return -ENXIO;
34998ac8af4SGuenter Roeck ret = adm1275_read_samples(data, client, true);
350c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0)
351c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break;
352c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = BIT(ret);
353c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break;
354c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_IN_SAMPLES:
355c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_CURR_SAMPLES:
35698ac8af4SGuenter Roeck ret = adm1275_read_samples(data, client, false);
357c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) if (ret < 0)
358c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break;
359c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) ret = BIT(ret);
360c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break;
361c576e30cSGuenter Roeck default:
362c576e30cSGuenter Roeck ret = -ENODATA;
363c576e30cSGuenter Roeck break;
364c576e30cSGuenter Roeck }
365c576e30cSGuenter Roeck return ret;
366c576e30cSGuenter Roeck }
367c576e30cSGuenter Roeck
adm1275_write_word_data(struct i2c_client * client,int page,int reg,u16 word)368c576e30cSGuenter Roeck static int adm1275_write_word_data(struct i2c_client *client, int page, int reg,
369c576e30cSGuenter Roeck u16 word)
370c576e30cSGuenter Roeck {
37168a40382SGuenter Roeck const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
37268a40382SGuenter Roeck const struct adm1275_data *data = to_adm1275_data(info);
373c576e30cSGuenter Roeck int ret;
374c576e30cSGuenter Roeck
375ecb29abdSGuenter Roeck if (page > 0)
376c5e67636SGuenter Roeck return -ENXIO;
377c576e30cSGuenter Roeck
378c576e30cSGuenter Roeck switch (reg) {
379c5e67636SGuenter Roeck case PMBUS_IOUT_UC_FAULT_LIMIT:
380c5e67636SGuenter Roeck case PMBUS_IOUT_OC_FAULT_LIMIT:
381c5e67636SGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_IOUT_WARN2_LIMIT,
382c5e67636SGuenter Roeck word);
383c5e67636SGuenter Roeck break;
384c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_IOUT_HISTORY:
385c576e30cSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_IOUT, 0);
38668a40382SGuenter Roeck if (!ret && data->have_iout_min)
38768a40382SGuenter Roeck ret = pmbus_write_word_data(client, 0,
38868a40382SGuenter Roeck ADM1293_IOUT_MIN, 0);
389c576e30cSGuenter Roeck break;
390c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VOUT_HISTORY:
391c576e30cSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VOUT, 0);
392c576e30cSGuenter Roeck break;
393c576e30cSGuenter Roeck case PMBUS_VIRT_RESET_VIN_HISTORY:
394c576e30cSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0);
395c576e30cSGuenter Roeck break;
3965cf231a3SGuenter Roeck case PMBUS_VIRT_RESET_PIN_HISTORY:
3975cf231a3SGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0);
39868a40382SGuenter Roeck if (!ret && data->have_pin_min)
39968a40382SGuenter Roeck ret = pmbus_write_word_data(client, 0,
40068a40382SGuenter Roeck ADM1293_PIN_MIN, 0);
4015cf231a3SGuenter Roeck break;
402709066acSGuenter Roeck case PMBUS_VIRT_RESET_TEMP_HISTORY:
403709066acSGuenter Roeck ret = pmbus_write_word_data(client, 0, ADM1278_PEAK_TEMP, 0);
404709066acSGuenter Roeck break;
405c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_POWER_SAMPLES:
4067d45deb3SGuenter Roeck if (!data->have_power_sampling)
4077d45deb3SGuenter Roeck return -ENXIO;
408c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX);
40998ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, true, ilog2(word));
410c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break;
411c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_IN_SAMPLES:
412c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) case PMBUS_VIRT_CURR_SAMPLES:
413c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) word = clamp_val(word, 1, ADM1275_SAMPLES_AVG_MAX);
41498ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, false, ilog2(word));
415c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) break;
416c576e30cSGuenter Roeck default:
417c576e30cSGuenter Roeck ret = -ENODATA;
418c576e30cSGuenter Roeck break;
419c576e30cSGuenter Roeck }
420c576e30cSGuenter Roeck return ret;
421c576e30cSGuenter Roeck }
422c576e30cSGuenter Roeck
adm1275_read_byte_data(struct i2c_client * client,int page,int reg)423c5e67636SGuenter Roeck static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg)
424c5e67636SGuenter Roeck {
425c5e67636SGuenter Roeck const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
426c5e67636SGuenter Roeck const struct adm1275_data *data = to_adm1275_data(info);
427c5e67636SGuenter Roeck int mfr_status, ret;
428c5e67636SGuenter Roeck
429da8e48abSGuenter Roeck if (page > 0)
430c5e67636SGuenter Roeck return -ENXIO;
431c5e67636SGuenter Roeck
432c5e67636SGuenter Roeck switch (reg) {
433c5e67636SGuenter Roeck case PMBUS_STATUS_IOUT:
434c5e67636SGuenter Roeck ret = pmbus_read_byte_data(client, page, PMBUS_STATUS_IOUT);
435c5e67636SGuenter Roeck if (ret < 0)
436c5e67636SGuenter Roeck break;
4379048539bSGuenter Roeck if (!data->have_oc_fault && !data->have_uc_fault)
4389048539bSGuenter Roeck break;
439c5e67636SGuenter Roeck mfr_status = pmbus_read_byte_data(client, page,
440c5e67636SGuenter Roeck PMBUS_STATUS_MFR_SPECIFIC);
4419048539bSGuenter Roeck if (mfr_status < 0)
4429048539bSGuenter Roeck return mfr_status;
443c5e67636SGuenter Roeck if (mfr_status & ADM1275_MFR_STATUS_IOUT_WARN2) {
444c5e67636SGuenter Roeck ret |= data->have_oc_fault ?
445c5e67636SGuenter Roeck PB_IOUT_OC_FAULT : PB_IOUT_UC_FAULT;
446c5e67636SGuenter Roeck }
447c5e67636SGuenter Roeck break;
44892711269SGuenter Roeck case PMBUS_STATUS_VOUT:
4499048539bSGuenter Roeck if (data->have_vout)
4509048539bSGuenter Roeck return -ENODATA;
45192711269SGuenter Roeck ret = 0;
4529048539bSGuenter Roeck if (data->have_vaux_status) {
45392711269SGuenter Roeck mfr_status = pmbus_read_byte_data(client, 0,
45492711269SGuenter Roeck ADM1075_VAUX_STATUS);
4559048539bSGuenter Roeck if (mfr_status < 0)
4569048539bSGuenter Roeck return mfr_status;
45792711269SGuenter Roeck if (mfr_status & ADM1075_VAUX_OV_WARN)
45892711269SGuenter Roeck ret |= PB_VOLTAGE_OV_WARNING;
45992711269SGuenter Roeck if (mfr_status & ADM1075_VAUX_UV_WARN)
46092711269SGuenter Roeck ret |= PB_VOLTAGE_UV_WARNING;
46168a40382SGuenter Roeck } else if (data->have_mfr_vaux_status) {
46268a40382SGuenter Roeck mfr_status = pmbus_read_byte_data(client, page,
46368a40382SGuenter Roeck PMBUS_STATUS_MFR_SPECIFIC);
46468a40382SGuenter Roeck if (mfr_status < 0)
46568a40382SGuenter Roeck return mfr_status;
46668a40382SGuenter Roeck if (mfr_status & ADM1293_MFR_STATUS_VAUX_OV_WARN)
46768a40382SGuenter Roeck ret |= PB_VOLTAGE_OV_WARNING;
46868a40382SGuenter Roeck if (mfr_status & ADM1293_MFR_STATUS_VAUX_UV_WARN)
46968a40382SGuenter Roeck ret |= PB_VOLTAGE_UV_WARNING;
4709048539bSGuenter Roeck }
47192711269SGuenter Roeck break;
472c5e67636SGuenter Roeck default:
473c5e67636SGuenter Roeck ret = -ENODATA;
474c5e67636SGuenter Roeck break;
475c5e67636SGuenter Roeck }
476c5e67636SGuenter Roeck return ret;
477c5e67636SGuenter Roeck }
478c5e67636SGuenter Roeck
47987102808SGuenter Roeck static const struct i2c_device_id adm1275_id[] = {
48092711269SGuenter Roeck { "adm1075", adm1075 },
4814ff0ce22SGuenter Roeck { "adm1272", adm1272 },
48287102808SGuenter Roeck { "adm1275", adm1275 },
48387102808SGuenter Roeck { "adm1276", adm1276 },
484709066acSGuenter Roeck { "adm1278", adm1278 },
485*91630090SJose Ramon San Buenaventura { "adm1281", adm1281 },
48668a40382SGuenter Roeck { "adm1293", adm1293 },
48768a40382SGuenter Roeck { "adm1294", adm1294 },
48887102808SGuenter Roeck { }
48987102808SGuenter Roeck };
49087102808SGuenter Roeck MODULE_DEVICE_TABLE(i2c, adm1275_id);
49187102808SGuenter Roeck
492b153a0bbSGuenter Roeck /* Enable VOUT & TEMP1 if not enabled (disabled by default) */
adm1275_enable_vout_temp(struct adm1275_data * data,struct i2c_client * client,int config)49398ac8af4SGuenter Roeck static int adm1275_enable_vout_temp(struct adm1275_data *data,
49498ac8af4SGuenter Roeck struct i2c_client *client, int config)
495b153a0bbSGuenter Roeck {
496b153a0bbSGuenter Roeck int ret;
497b153a0bbSGuenter Roeck
498b153a0bbSGuenter Roeck if ((config & ADM1278_PMON_DEFCONFIG) != ADM1278_PMON_DEFCONFIG) {
499b153a0bbSGuenter Roeck config |= ADM1278_PMON_DEFCONFIG;
50098ac8af4SGuenter Roeck ret = adm1275_write_pmon_config(data, client, config);
501b153a0bbSGuenter Roeck if (ret < 0) {
502b153a0bbSGuenter Roeck dev_err(&client->dev, "Failed to enable VOUT/TEMP1 monitoring\n");
503b153a0bbSGuenter Roeck return ret;
504b153a0bbSGuenter Roeck }
505b153a0bbSGuenter Roeck }
506b153a0bbSGuenter Roeck return 0;
507b153a0bbSGuenter Roeck }
508b153a0bbSGuenter Roeck
adm1275_probe(struct i2c_client * client)509dd431939SStephen Kitt static int adm1275_probe(struct i2c_client *client)
5109d2ecfb7SGuenter Roeck {
5116d1d41c0SChu Lin s32 (*config_read_fn)(const struct i2c_client *client, u8 reg);
51287102808SGuenter Roeck u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
513c5e67636SGuenter Roeck int config, device_config;
5149d2ecfb7SGuenter Roeck int ret;
5159d2ecfb7SGuenter Roeck struct pmbus_driver_info *info;
516c5e67636SGuenter Roeck struct adm1275_data *data;
51787102808SGuenter Roeck const struct i2c_device_id *mid;
518904b296fSGuenter Roeck const struct coefficients *coefficients;
51968a40382SGuenter Roeck int vindex = -1, voindex = -1, cindex = -1, pindex = -1;
520709066acSGuenter Roeck int tindex = -1;
5216e5c06adSKun Yi u32 shunt;
522a3cd66d7SPotin Lai u32 avg;
5239d2ecfb7SGuenter Roeck
5249d2ecfb7SGuenter Roeck if (!i2c_check_functionality(client->adapter,
52587102808SGuenter Roeck I2C_FUNC_SMBUS_READ_BYTE_DATA
52687102808SGuenter Roeck | I2C_FUNC_SMBUS_BLOCK_DATA))
5279d2ecfb7SGuenter Roeck return -ENODEV;
5289d2ecfb7SGuenter Roeck
52987102808SGuenter Roeck ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, block_buffer);
53087102808SGuenter Roeck if (ret < 0) {
53187102808SGuenter Roeck dev_err(&client->dev, "Failed to read Manufacturer ID\n");
53287102808SGuenter Roeck return ret;
53387102808SGuenter Roeck }
53487102808SGuenter Roeck if (ret != 3 || strncmp(block_buffer, "ADI", 3)) {
53587102808SGuenter Roeck dev_err(&client->dev, "Unsupported Manufacturer ID\n");
53687102808SGuenter Roeck return -ENODEV;
53787102808SGuenter Roeck }
53887102808SGuenter Roeck
53987102808SGuenter Roeck ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, block_buffer);
54087102808SGuenter Roeck if (ret < 0) {
54187102808SGuenter Roeck dev_err(&client->dev, "Failed to read Manufacturer Model\n");
54287102808SGuenter Roeck return ret;
54387102808SGuenter Roeck }
54487102808SGuenter Roeck for (mid = adm1275_id; mid->name[0]; mid++) {
54587102808SGuenter Roeck if (!strncasecmp(mid->name, block_buffer, strlen(mid->name)))
54687102808SGuenter Roeck break;
54787102808SGuenter Roeck }
54887102808SGuenter Roeck if (!mid->name[0]) {
54987102808SGuenter Roeck dev_err(&client->dev, "Unsupported device\n");
55087102808SGuenter Roeck return -ENODEV;
55187102808SGuenter Roeck }
55287102808SGuenter Roeck
553dd431939SStephen Kitt if (strcmp(client->name, mid->name) != 0)
55487102808SGuenter Roeck dev_notice(&client->dev,
55587102808SGuenter Roeck "Device mismatch: Configured %s, detected %s\n",
556dd431939SStephen Kitt client->name, mid->name);
55787102808SGuenter Roeck
5586d1d41c0SChu Lin if (mid->driver_data == adm1272 || mid->driver_data == adm1278 ||
559*91630090SJose Ramon San Buenaventura mid->driver_data == adm1281 || mid->driver_data == adm1293 ||
560*91630090SJose Ramon San Buenaventura mid->driver_data == adm1294)
5616d1d41c0SChu Lin config_read_fn = i2c_smbus_read_word_data;
5626d1d41c0SChu Lin else
5636d1d41c0SChu Lin config_read_fn = i2c_smbus_read_byte_data;
5646d1d41c0SChu Lin config = config_read_fn(client, ADM1275_PMON_CONFIG);
56587102808SGuenter Roeck if (config < 0)
56687102808SGuenter Roeck return config;
56787102808SGuenter Roeck
5686d1d41c0SChu Lin device_config = config_read_fn(client, ADM1275_DEVICE_CONFIG);
56987102808SGuenter Roeck if (device_config < 0)
57087102808SGuenter Roeck return device_config;
57187102808SGuenter Roeck
5728b313ca7SGuenter Roeck data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data),
5738b313ca7SGuenter Roeck GFP_KERNEL);
574c5e67636SGuenter Roeck if (!data)
5759d2ecfb7SGuenter Roeck return -ENOMEM;
5769d2ecfb7SGuenter Roeck
5776e5c06adSKun Yi if (of_property_read_u32(client->dev.of_node,
5786e5c06adSKun Yi "shunt-resistor-micro-ohms", &shunt))
5796e5c06adSKun Yi shunt = 1000; /* 1 mOhm if not set via DT */
5806e5c06adSKun Yi
5816e5c06adSKun Yi if (shunt == 0)
5826e5c06adSKun Yi return -EINVAL;
5836e5c06adSKun Yi
58487102808SGuenter Roeck data->id = mid->driver_data;
5859d2ecfb7SGuenter Roeck
586c5e67636SGuenter Roeck info = &data->info;
587c5e67636SGuenter Roeck
5889d2ecfb7SGuenter Roeck info->pages = 1;
5891061d851SGuenter Roeck info->format[PSC_VOLTAGE_IN] = direct;
5901061d851SGuenter Roeck info->format[PSC_VOLTAGE_OUT] = direct;
5911061d851SGuenter Roeck info->format[PSC_CURRENT_OUT] = direct;
592904b296fSGuenter Roeck info->format[PSC_POWER] = direct;
593709066acSGuenter Roeck info->format[PSC_TEMPERATURE] = direct;
594c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) info->func[0] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
595c83529c1SAdamski, Krzysztof (Nokia - PL/Wroclaw) PMBUS_HAVE_SAMPLES;
5969d2ecfb7SGuenter Roeck
597c576e30cSGuenter Roeck info->read_word_data = adm1275_read_word_data;
598c5e67636SGuenter Roeck info->read_byte_data = adm1275_read_byte_data;
599c576e30cSGuenter Roeck info->write_word_data = adm1275_write_word_data;
600c576e30cSGuenter Roeck
60187102808SGuenter Roeck switch (data->id) {
60292711269SGuenter Roeck case adm1075:
6039048539bSGuenter Roeck if (device_config & ADM1275_IOUT_WARN2_SELECT)
6049048539bSGuenter Roeck data->have_oc_fault = true;
6059048539bSGuenter Roeck else
6069048539bSGuenter Roeck data->have_uc_fault = true;
6079048539bSGuenter Roeck data->have_pin_max = true;
6089048539bSGuenter Roeck data->have_vaux_status = true;
6099048539bSGuenter Roeck
610904b296fSGuenter Roeck coefficients = adm1075_coefficients;
611904b296fSGuenter Roeck vindex = 0;
61292711269SGuenter Roeck switch (config & ADM1075_IRANGE_MASK) {
61392711269SGuenter Roeck case ADM1075_IRANGE_25:
614904b296fSGuenter Roeck cindex = 1;
615904b296fSGuenter Roeck pindex = 3;
61692711269SGuenter Roeck break;
61792711269SGuenter Roeck case ADM1075_IRANGE_50:
618904b296fSGuenter Roeck cindex = 2;
619904b296fSGuenter Roeck pindex = 4;
62092711269SGuenter Roeck break;
62192711269SGuenter Roeck default:
62292711269SGuenter Roeck dev_err(&client->dev, "Invalid input current range");
62392711269SGuenter Roeck break;
62492711269SGuenter Roeck }
625904b296fSGuenter Roeck
62692711269SGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN
62792711269SGuenter Roeck | PMBUS_HAVE_STATUS_INPUT;
62892711269SGuenter Roeck if (config & ADM1275_VIN_VOUT_SELECT)
62992711269SGuenter Roeck info->func[0] |=
63092711269SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
63192711269SGuenter Roeck break;
6324ff0ce22SGuenter Roeck case adm1272:
6334ff0ce22SGuenter Roeck data->have_vout = true;
6344ff0ce22SGuenter Roeck data->have_pin_max = true;
6354ff0ce22SGuenter Roeck data->have_temp_max = true;
6367d45deb3SGuenter Roeck data->have_power_sampling = true;
6374ff0ce22SGuenter Roeck
6384ff0ce22SGuenter Roeck coefficients = adm1272_coefficients;
6394ff0ce22SGuenter Roeck vindex = (config & ADM1275_VRANGE) ? 1 : 0;
6404ff0ce22SGuenter Roeck cindex = (config & ADM1272_IRANGE) ? 3 : 2;
6414ff0ce22SGuenter Roeck /* pindex depends on the combination of the above */
6424ff0ce22SGuenter Roeck switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) {
6434ff0ce22SGuenter Roeck case 0:
6444ff0ce22SGuenter Roeck default:
6454ff0ce22SGuenter Roeck pindex = 4;
6464ff0ce22SGuenter Roeck break;
6474ff0ce22SGuenter Roeck case ADM1275_VRANGE:
6484ff0ce22SGuenter Roeck pindex = 5;
6494ff0ce22SGuenter Roeck break;
6504ff0ce22SGuenter Roeck case ADM1272_IRANGE:
6514ff0ce22SGuenter Roeck pindex = 6;
6524ff0ce22SGuenter Roeck break;
6534ff0ce22SGuenter Roeck case ADM1275_VRANGE | ADM1272_IRANGE:
6544ff0ce22SGuenter Roeck pindex = 7;
6554ff0ce22SGuenter Roeck break;
6564ff0ce22SGuenter Roeck }
6574ff0ce22SGuenter Roeck tindex = 8;
6584ff0ce22SGuenter Roeck
6594ff0ce22SGuenter Roeck info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
6609da9c2dcSChu Lin PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
6619da9c2dcSChu Lin PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
6624ff0ce22SGuenter Roeck
66398ac8af4SGuenter Roeck ret = adm1275_enable_vout_temp(data, client, config);
664b153a0bbSGuenter Roeck if (ret)
665b153a0bbSGuenter Roeck return ret;
666b153a0bbSGuenter Roeck
6674ff0ce22SGuenter Roeck if (config & ADM1278_VIN_EN)
6684ff0ce22SGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN;
6694ff0ce22SGuenter Roeck break;
6705cf231a3SGuenter Roeck case adm1275:
6719048539bSGuenter Roeck if (device_config & ADM1275_IOUT_WARN2_SELECT)
6729048539bSGuenter Roeck data->have_oc_fault = true;
6739048539bSGuenter Roeck else
6749048539bSGuenter Roeck data->have_uc_fault = true;
6759048539bSGuenter Roeck data->have_vout = true;
6769048539bSGuenter Roeck
677904b296fSGuenter Roeck coefficients = adm1275_coefficients;
678904b296fSGuenter Roeck vindex = (config & ADM1275_VRANGE) ? 0 : 1;
679904b296fSGuenter Roeck cindex = 2;
680904b296fSGuenter Roeck
6819d2ecfb7SGuenter Roeck if (config & ADM1275_VIN_VOUT_SELECT)
6825cf231a3SGuenter Roeck info->func[0] |=
6835cf231a3SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
6849d2ecfb7SGuenter Roeck else
6855cf231a3SGuenter Roeck info->func[0] |=
6865cf231a3SGuenter Roeck PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
6875cf231a3SGuenter Roeck break;
6885cf231a3SGuenter Roeck case adm1276:
6899048539bSGuenter Roeck if (device_config & ADM1275_IOUT_WARN2_SELECT)
6909048539bSGuenter Roeck data->have_oc_fault = true;
6919048539bSGuenter Roeck else
6929048539bSGuenter Roeck data->have_uc_fault = true;
6939048539bSGuenter Roeck data->have_vout = true;
6949048539bSGuenter Roeck data->have_pin_max = true;
6959048539bSGuenter Roeck
696904b296fSGuenter Roeck coefficients = adm1276_coefficients;
697904b296fSGuenter Roeck vindex = (config & ADM1275_VRANGE) ? 0 : 1;
698904b296fSGuenter Roeck cindex = 2;
699904b296fSGuenter Roeck pindex = (config & ADM1275_VRANGE) ? 3 : 4;
700904b296fSGuenter Roeck
7015cf231a3SGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN
7025cf231a3SGuenter Roeck | PMBUS_HAVE_STATUS_INPUT;
7035cf231a3SGuenter Roeck if (config & ADM1275_VIN_VOUT_SELECT)
7045cf231a3SGuenter Roeck info->func[0] |=
7055cf231a3SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
7065cf231a3SGuenter Roeck break;
707709066acSGuenter Roeck case adm1278:
708*91630090SJose Ramon San Buenaventura case adm1281:
709709066acSGuenter Roeck data->have_vout = true;
710709066acSGuenter Roeck data->have_pin_max = true;
711709066acSGuenter Roeck data->have_temp_max = true;
7127d45deb3SGuenter Roeck data->have_power_sampling = true;
713709066acSGuenter Roeck
714709066acSGuenter Roeck coefficients = adm1278_coefficients;
715709066acSGuenter Roeck vindex = 0;
716709066acSGuenter Roeck cindex = 1;
717709066acSGuenter Roeck pindex = 2;
718709066acSGuenter Roeck tindex = 3;
719709066acSGuenter Roeck
7202b3d0c19SYi Li info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
721a37881deSManikandan Elumalai PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
722a37881deSManikandan Elumalai PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
7232b3d0c19SYi Li
72498ac8af4SGuenter Roeck ret = adm1275_enable_vout_temp(data, client, config);
725b153a0bbSGuenter Roeck if (ret)
726b153a0bbSGuenter Roeck return ret;
7272b3d0c19SYi Li
728709066acSGuenter Roeck if (config & ADM1278_VIN_EN)
729709066acSGuenter Roeck info->func[0] |= PMBUS_HAVE_VIN;
730709066acSGuenter Roeck break;
73168a40382SGuenter Roeck case adm1293:
73268a40382SGuenter Roeck case adm1294:
73368a40382SGuenter Roeck data->have_iout_min = true;
73468a40382SGuenter Roeck data->have_pin_min = true;
73568a40382SGuenter Roeck data->have_pin_max = true;
73668a40382SGuenter Roeck data->have_mfr_vaux_status = true;
7377d45deb3SGuenter Roeck data->have_power_sampling = true;
73868a40382SGuenter Roeck
73968a40382SGuenter Roeck coefficients = adm1293_coefficients;
74068a40382SGuenter Roeck
74168a40382SGuenter Roeck voindex = 0;
74268a40382SGuenter Roeck switch (config & ADM1293_VIN_SEL_MASK) {
74368a40382SGuenter Roeck case ADM1293_VIN_SEL_012: /* 1.2V */
74468a40382SGuenter Roeck vindex = 0;
74568a40382SGuenter Roeck break;
74668a40382SGuenter Roeck case ADM1293_VIN_SEL_074: /* 7.4V */
74768a40382SGuenter Roeck vindex = 1;
74868a40382SGuenter Roeck break;
74968a40382SGuenter Roeck case ADM1293_VIN_SEL_210: /* 21V */
75068a40382SGuenter Roeck vindex = 2;
75168a40382SGuenter Roeck break;
75268a40382SGuenter Roeck default: /* disabled */
75368a40382SGuenter Roeck break;
75468a40382SGuenter Roeck }
75568a40382SGuenter Roeck
75668a40382SGuenter Roeck switch (config & ADM1293_IRANGE_MASK) {
75768a40382SGuenter Roeck case ADM1293_IRANGE_25:
75868a40382SGuenter Roeck cindex = 3;
75968a40382SGuenter Roeck break;
76068a40382SGuenter Roeck case ADM1293_IRANGE_50:
76168a40382SGuenter Roeck cindex = 4;
76268a40382SGuenter Roeck break;
76368a40382SGuenter Roeck case ADM1293_IRANGE_100:
76468a40382SGuenter Roeck cindex = 5;
76568a40382SGuenter Roeck break;
76668a40382SGuenter Roeck case ADM1293_IRANGE_200:
76768a40382SGuenter Roeck cindex = 6;
76868a40382SGuenter Roeck break;
76968a40382SGuenter Roeck }
77068a40382SGuenter Roeck
77168a40382SGuenter Roeck if (vindex >= 0)
77268a40382SGuenter Roeck pindex = 7 + vindex * 4 + (cindex - 3);
77368a40382SGuenter Roeck
77468a40382SGuenter Roeck if (config & ADM1293_VAUX_EN)
77568a40382SGuenter Roeck info->func[0] |=
77668a40382SGuenter Roeck PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
77768a40382SGuenter Roeck
77868a40382SGuenter Roeck info->func[0] |= PMBUS_HAVE_PIN |
77968a40382SGuenter Roeck PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
78068a40382SGuenter Roeck
78168a40382SGuenter Roeck break;
782904b296fSGuenter Roeck default:
783904b296fSGuenter Roeck dev_err(&client->dev, "Unsupported device\n");
784904b296fSGuenter Roeck return -ENODEV;
785904b296fSGuenter Roeck }
78668a40382SGuenter Roeck
787a3cd66d7SPotin Lai if (data->have_power_sampling &&
788a3cd66d7SPotin Lai of_property_read_u32(client->dev.of_node,
789a3cd66d7SPotin Lai "adi,power-sample-average", &avg) == 0) {
790a3cd66d7SPotin Lai if (!avg || avg > ADM1275_SAMPLES_AVG_MAX ||
791a3cd66d7SPotin Lai BIT(__fls(avg)) != avg) {
792a3cd66d7SPotin Lai dev_err(&client->dev,
793a3cd66d7SPotin Lai "Invalid number of power samples");
794a3cd66d7SPotin Lai return -EINVAL;
795a3cd66d7SPotin Lai }
79698ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, true, ilog2(avg));
797a3cd66d7SPotin Lai if (ret < 0) {
798a3cd66d7SPotin Lai dev_err(&client->dev,
799a3cd66d7SPotin Lai "Setting power sample averaging failed with error %d",
800a3cd66d7SPotin Lai ret);
801a3cd66d7SPotin Lai return ret;
802a3cd66d7SPotin Lai }
803a3cd66d7SPotin Lai }
804a3cd66d7SPotin Lai
805a3cd66d7SPotin Lai if (of_property_read_u32(client->dev.of_node,
806a3cd66d7SPotin Lai "adi,volt-curr-sample-average", &avg) == 0) {
807a3cd66d7SPotin Lai if (!avg || avg > ADM1275_SAMPLES_AVG_MAX ||
808a3cd66d7SPotin Lai BIT(__fls(avg)) != avg) {
809a3cd66d7SPotin Lai dev_err(&client->dev,
810a3cd66d7SPotin Lai "Invalid number of voltage/current samples");
811a3cd66d7SPotin Lai return -EINVAL;
812a3cd66d7SPotin Lai }
81398ac8af4SGuenter Roeck ret = adm1275_write_samples(data, client, false, ilog2(avg));
814a3cd66d7SPotin Lai if (ret < 0) {
815a3cd66d7SPotin Lai dev_err(&client->dev,
816a3cd66d7SPotin Lai "Setting voltage and current sample averaging failed with error %d",
817a3cd66d7SPotin Lai ret);
818a3cd66d7SPotin Lai return ret;
819a3cd66d7SPotin Lai }
820a3cd66d7SPotin Lai }
821a3cd66d7SPotin Lai
82268a40382SGuenter Roeck if (voindex < 0)
82368a40382SGuenter Roeck voindex = vindex;
824904b296fSGuenter Roeck if (vindex >= 0) {
825904b296fSGuenter Roeck info->m[PSC_VOLTAGE_IN] = coefficients[vindex].m;
826904b296fSGuenter Roeck info->b[PSC_VOLTAGE_IN] = coefficients[vindex].b;
827904b296fSGuenter Roeck info->R[PSC_VOLTAGE_IN] = coefficients[vindex].R;
82868a40382SGuenter Roeck }
82968a40382SGuenter Roeck if (voindex >= 0) {
83068a40382SGuenter Roeck info->m[PSC_VOLTAGE_OUT] = coefficients[voindex].m;
83168a40382SGuenter Roeck info->b[PSC_VOLTAGE_OUT] = coefficients[voindex].b;
83268a40382SGuenter Roeck info->R[PSC_VOLTAGE_OUT] = coefficients[voindex].R;
833904b296fSGuenter Roeck }
834904b296fSGuenter Roeck if (cindex >= 0) {
8356e5c06adSKun Yi /* Scale current with sense resistor value */
8366e5c06adSKun Yi info->m[PSC_CURRENT_OUT] =
8376e5c06adSKun Yi coefficients[cindex].m * shunt / 1000;
838904b296fSGuenter Roeck info->b[PSC_CURRENT_OUT] = coefficients[cindex].b;
839904b296fSGuenter Roeck info->R[PSC_CURRENT_OUT] = coefficients[cindex].R;
840904b296fSGuenter Roeck }
841904b296fSGuenter Roeck if (pindex >= 0) {
8426e5c06adSKun Yi info->m[PSC_POWER] =
8436e5c06adSKun Yi coefficients[pindex].m * shunt / 1000;
844904b296fSGuenter Roeck info->b[PSC_POWER] = coefficients[pindex].b;
845904b296fSGuenter Roeck info->R[PSC_POWER] = coefficients[pindex].R;
8465cf231a3SGuenter Roeck }
847709066acSGuenter Roeck if (tindex >= 0) {
848709066acSGuenter Roeck info->m[PSC_TEMPERATURE] = coefficients[tindex].m;
849709066acSGuenter Roeck info->b[PSC_TEMPERATURE] = coefficients[tindex].b;
850709066acSGuenter Roeck info->R[PSC_TEMPERATURE] = coefficients[tindex].R;
851709066acSGuenter Roeck }
8529d2ecfb7SGuenter Roeck
853dd431939SStephen Kitt return pmbus_do_probe(client, info);
8549d2ecfb7SGuenter Roeck }
8559d2ecfb7SGuenter Roeck
8569d2ecfb7SGuenter Roeck static struct i2c_driver adm1275_driver = {
8579d2ecfb7SGuenter Roeck .driver = {
8589d2ecfb7SGuenter Roeck .name = "adm1275",
8599d2ecfb7SGuenter Roeck },
8601975d167SUwe Kleine-König .probe = adm1275_probe,
8619d2ecfb7SGuenter Roeck .id_table = adm1275_id,
8629d2ecfb7SGuenter Roeck };
8639d2ecfb7SGuenter Roeck
864f0967eeaSAxel Lin module_i2c_driver(adm1275_driver);
8659d2ecfb7SGuenter Roeck
8669d2ecfb7SGuenter Roeck MODULE_AUTHOR("Guenter Roeck");
8675cf231a3SGuenter Roeck MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles");
8689d2ecfb7SGuenter Roeck MODULE_LICENSE("GPL");
869b94ca77eSGuenter Roeck MODULE_IMPORT_NS(PMBUS);
870