1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
6 #include <linux/bitfield.h>
7 #include <linux/nvmem-consumer.h>
8 #include <linux/platform_device.h>
11 /* ----- SROT ------ */
12 #define SROT_CTRL_OFF 0x0000
15 #define TM_INT_EN_OFF 0x0000
16 #define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0x0004
17 #define TM_Sn_STATUS_OFF 0x0030
18 #define TM_TRDY_OFF 0x005c
20 /* extra data for 8974 */
22 #define BKP_REDUN_SEL 0xe0000000
24 #define BIT_APPEND 0x3
26 static struct tsens_legacy_calibration_format tsens_8916_nvmem = {
31 .invalid = { 0, 31, 1 },
32 .base = { { 0, 0 }, { 1, 25 } },
34 { { 0, 7 }, { 0, 12 } },
35 { { 0, 17 }, { 0, 22 } },
36 { { 0, 27 }, { 1, 0 } },
37 { { 1, 5 }, { 1, 10 } },
38 { { 1, 15 }, { 1, 20 } },
42 static struct tsens_legacy_calibration_format tsens_8974_nvmem = {
48 .base = { { 0, 0 }, { 2, 12 } },
50 { { 0, 8 }, { 2, 20 } },
51 { { 0, 14 }, { 2, 26 } },
52 { { 0, 20 }, { 3, 0 } },
53 { { 0, 26 }, { 3, 6 } },
54 { { 1, 0 }, { 3, 12 } },
55 { { 1, 6 }, { 3, 18 } },
56 { { 1, 12 }, { 3, 24 } },
57 { { 1, 18 }, { 4, 0 } },
58 { { 1, 24 }, { 4, 6 } },
59 { { 2, 0 }, { 4, 12 } },
60 { { 2, 6 }, { 4, 18 } },
64 static struct tsens_legacy_calibration_format tsens_8974_backup_nvmem = {
69 .invalid = { 5, 30, 1 },
70 .base = { { 0, 0 }, { 2, 18 } },
72 { { 0, 8 }, { 2, 26 } },
73 { { 0, 14 }, { 3, 0 } },
74 { { 0, 20 }, { 3, 6 } },
75 { { 0, 26 }, { 3, 12 } },
76 { { 1, 0 }, { 3, 18 } },
77 { { 1, 6 }, { 3, 24, 1 } },
78 { { 1, 12 }, { 4, 0, 1 } },
79 { { 1, 18 }, { 4, 6, 1 } },
80 { { 2, 0 }, { 4, 12, 1 } },
81 { { 2, 6 }, { 4, 18, 1 } },
82 { { 2, 12 }, { 4, 24, 1 } },
86 static int calibrate_8916(struct tsens_priv *priv)
89 u32 *qfprom_cdata, *qfprom_csel;
92 ret = tsens_calibrate_nvmem(priv, 3);
96 qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
97 if (IS_ERR(qfprom_cdata))
98 return PTR_ERR(qfprom_cdata);
100 qfprom_csel = (u32 *)qfprom_read(priv->dev, "calib_sel");
101 if (IS_ERR(qfprom_csel)) {
103 return PTR_ERR(qfprom_csel);
106 mode = tsens_read_calibration_legacy(priv, &tsens_8916_nvmem,
108 qfprom_cdata, qfprom_csel);
110 compute_intercept_slope(priv, p1, p2, mode);
117 static void fixup_8974_points(int mode, u32 *p1, u32 *p2)
121 if (mode == NO_PT_CALIB) {
134 for (i = 0; i < 11; i++) {
136 * ONE_PT_CALIB requires using addition here instead of
137 * using OR operation.
146 static int calibrate_8974_nvmem(struct tsens_priv *priv)
152 ret = nvmem_cell_read_variable_le_u32(priv->dev, "use_backup", &backup);
154 dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n");
158 mode = tsens_read_calibration(priv, 2, p1, p2, backup == BKP_SEL);
162 fixup_8974_points(mode, p1, p2);
164 compute_intercept_slope(priv, p1, p2, mode);
169 static int calibrate_8974(struct tsens_priv *priv)
176 ret = calibrate_8974_nvmem(priv);
180 calib = (u32 *)qfprom_read(priv->dev, "calib");
182 return PTR_ERR(calib);
184 bkp = (u32 *)qfprom_read(priv->dev, "calib_backup");
190 calib_redun_sel = FIELD_GET(BKP_REDUN_SEL, bkp[1]);
192 if (calib_redun_sel == BKP_SEL)
193 mode = tsens_read_calibration_legacy(priv, &tsens_8974_backup_nvmem,
197 mode = tsens_read_calibration_legacy(priv, &tsens_8974_nvmem,
201 fixup_8974_points(mode, p1, p2);
203 compute_intercept_slope(priv, p1, p2, mode);
210 static int __init init_8226(struct tsens_priv *priv)
212 priv->sensor[0].slope = 2901;
213 priv->sensor[1].slope = 2846;
214 priv->sensor[2].slope = 3038;
215 priv->sensor[3].slope = 2955;
216 priv->sensor[4].slope = 2901;
217 priv->sensor[5].slope = 2846;
219 return init_common(priv);
222 static int __init init_8909(struct tsens_priv *priv)
226 for (i = 0; i < priv->num_sensors; ++i)
227 priv->sensor[i].slope = 3000;
229 priv->sensor[0].p1_calib_offset = 0;
230 priv->sensor[0].p2_calib_offset = 0;
231 priv->sensor[1].p1_calib_offset = -10;
232 priv->sensor[1].p2_calib_offset = -6;
233 priv->sensor[2].p1_calib_offset = 0;
234 priv->sensor[2].p2_calib_offset = 0;
235 priv->sensor[3].p1_calib_offset = -9;
236 priv->sensor[3].p2_calib_offset = -9;
237 priv->sensor[4].p1_calib_offset = -8;
238 priv->sensor[4].p2_calib_offset = -10;
240 return init_common(priv);
243 static int __init init_8939(struct tsens_priv *priv) {
244 priv->sensor[0].slope = 2911;
245 priv->sensor[1].slope = 2789;
246 priv->sensor[2].slope = 2906;
247 priv->sensor[3].slope = 2763;
248 priv->sensor[4].slope = 2922;
249 priv->sensor[5].slope = 2867;
250 priv->sensor[6].slope = 2833;
251 priv->sensor[7].slope = 2838;
252 priv->sensor[8].slope = 2840;
253 /* priv->sensor[9].slope = 2852; */
255 return init_common(priv);
258 static int __init init_9607(struct tsens_priv *priv)
262 for (i = 0; i < priv->num_sensors; ++i)
263 priv->sensor[i].slope = 3000;
265 priv->sensor[0].p1_calib_offset = 1;
266 priv->sensor[0].p2_calib_offset = 1;
267 priv->sensor[1].p1_calib_offset = -4;
268 priv->sensor[1].p2_calib_offset = -2;
269 priv->sensor[2].p1_calib_offset = 4;
270 priv->sensor[2].p2_calib_offset = 8;
271 priv->sensor[3].p1_calib_offset = -3;
272 priv->sensor[3].p2_calib_offset = -5;
273 priv->sensor[4].p1_calib_offset = -4;
274 priv->sensor[4].p2_calib_offset = -4;
276 return init_common(priv);
279 /* v0.1: 8226, 8909, 8916, 8939, 8974, 9607 */
281 static struct tsens_features tsens_v0_1_feat = {
282 .ver_major = VER_0_1,
288 .trip_min_temp = -40000,
289 .trip_max_temp = 120000,
292 static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = {
293 /* ----- SROT ------ */
294 /* No VERSION information */
297 [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
298 [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
300 /* ----- TM ------ */
301 /* INTERRUPT ENABLE */
302 [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0),
304 /* UPPER/LOWER TEMPERATURE THRESHOLDS */
305 REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0, 9),
306 REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19),
308 /* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */
309 REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20),
310 REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21),
312 /* NO CRITICAL INTERRUPT SUPPORT on v0.1 */
315 REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9),
316 /* No VALID field on v0.1 */
317 /* xxx_STATUS bits: 1 == threshold violated */
318 REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10),
319 REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11),
320 REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12),
321 /* No CRITICAL field on v0.1 */
322 REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13),
324 /* TRDY: 1=ready, 0=in progress */
325 [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
328 static const struct tsens_ops ops_8226 = {
330 .calibrate = tsens_calibrate_common,
331 .get_temp = get_temp_common,
334 struct tsens_plat_data data_8226 = {
337 .feat = &tsens_v0_1_feat,
338 .fields = tsens_v0_1_regfields,
341 static const struct tsens_ops ops_8909 = {
343 .calibrate = tsens_calibrate_common,
344 .get_temp = get_temp_common,
347 struct tsens_plat_data data_8909 = {
350 .feat = &tsens_v0_1_feat,
351 .fields = tsens_v0_1_regfields,
354 static const struct tsens_ops ops_8916 = {
356 .calibrate = calibrate_8916,
357 .get_temp = get_temp_common,
360 struct tsens_plat_data data_8916 = {
363 .hw_ids = (unsigned int []){0, 1, 2, 4, 5 },
365 .feat = &tsens_v0_1_feat,
366 .fields = tsens_v0_1_regfields,
369 static const struct tsens_ops ops_8939 = {
371 .calibrate = tsens_calibrate_common,
372 .get_temp = get_temp_common,
375 struct tsens_plat_data data_8939 = {
378 .hw_ids = (unsigned int []){ 0, 1, 2, 3, 5, 6, 7, 8, 9, /* 10 */ },
380 .feat = &tsens_v0_1_feat,
381 .fields = tsens_v0_1_regfields,
384 static const struct tsens_ops ops_8974 = {
386 .calibrate = calibrate_8974,
387 .get_temp = get_temp_common,
390 struct tsens_plat_data data_8974 = {
393 .feat = &tsens_v0_1_feat,
394 .fields = tsens_v0_1_regfields,
397 static const struct tsens_ops ops_9607 = {
399 .calibrate = tsens_calibrate_common,
400 .get_temp = get_temp_common,
403 struct tsens_plat_data data_9607 = {
406 .feat = &tsens_v0_1_feat,
407 .fields = tsens_v0_1_regfields,