tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 */
5
6#include <linux/platform_device.h>
7#include "tsens.h"
8
9/* ----- SROT ------ */
10#define SROT_CTRL_OFF 0x0000
11
12/* ----- TM ------ */
13#define TM_INT_EN_OFF 0x0000
14#define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0x0004
15#define TM_Sn_STATUS_OFF 0x0030
16#define TM_TRDY_OFF 0x005c
17
18/* eeprom layout data for 8916 */
19#define MSM8916_BASE0_MASK 0x0000007f
20#define MSM8916_BASE1_MASK 0xfe000000
21#define MSM8916_BASE0_SHIFT 0
22#define MSM8916_BASE1_SHIFT 25
23
24#define MSM8916_S0_P1_MASK 0x00000f80
25#define MSM8916_S1_P1_MASK 0x003e0000
26#define MSM8916_S2_P1_MASK 0xf8000000
27#define MSM8916_S3_P1_MASK 0x000003e0
28#define MSM8916_S4_P1_MASK 0x000f8000
29
30#define MSM8916_S0_P2_MASK 0x0001f000
31#define MSM8916_S1_P2_MASK 0x07c00000
32#define MSM8916_S2_P2_MASK 0x0000001f
33#define MSM8916_S3_P2_MASK 0x00007c00
34#define MSM8916_S4_P2_MASK 0x01f00000
35
36#define MSM8916_S0_P1_SHIFT 7
37#define MSM8916_S1_P1_SHIFT 17
38#define MSM8916_S2_P1_SHIFT 27
39#define MSM8916_S3_P1_SHIFT 5
40#define MSM8916_S4_P1_SHIFT 15
41
42#define MSM8916_S0_P2_SHIFT 12
43#define MSM8916_S1_P2_SHIFT 22
44#define MSM8916_S2_P2_SHIFT 0
45#define MSM8916_S3_P2_SHIFT 10
46#define MSM8916_S4_P2_SHIFT 20
47
48#define MSM8916_CAL_SEL_MASK 0xe0000000
49#define MSM8916_CAL_SEL_SHIFT 29
50
51/* eeprom layout data for 8974 */
52#define BASE1_MASK 0xff
53#define S0_P1_MASK 0x3f00
54#define S1_P1_MASK 0xfc000
55#define S2_P1_MASK 0x3f00000
56#define S3_P1_MASK 0xfc000000
57#define S4_P1_MASK 0x3f
58#define S5_P1_MASK 0xfc0
59#define S6_P1_MASK 0x3f000
60#define S7_P1_MASK 0xfc0000
61#define S8_P1_MASK 0x3f000000
62#define S8_P1_MASK_BKP 0x3f
63#define S9_P1_MASK 0x3f
64#define S9_P1_MASK_BKP 0xfc0
65#define S10_P1_MASK 0xfc0
66#define S10_P1_MASK_BKP 0x3f000
67#define CAL_SEL_0_1 0xc0000000
68#define CAL_SEL_2 0x40000000
69#define CAL_SEL_SHIFT 30
70#define CAL_SEL_SHIFT_2 28
71
72#define S0_P1_SHIFT 8
73#define S1_P1_SHIFT 14
74#define S2_P1_SHIFT 20
75#define S3_P1_SHIFT 26
76#define S5_P1_SHIFT 6
77#define S6_P1_SHIFT 12
78#define S7_P1_SHIFT 18
79#define S8_P1_SHIFT 24
80#define S9_P1_BKP_SHIFT 6
81#define S10_P1_SHIFT 6
82#define S10_P1_BKP_SHIFT 12
83
84#define BASE2_SHIFT 12
85#define BASE2_BKP_SHIFT 18
86#define S0_P2_SHIFT 20
87#define S0_P2_BKP_SHIFT 26
88#define S1_P2_SHIFT 26
89#define S2_P2_BKP_SHIFT 6
90#define S3_P2_SHIFT 6
91#define S3_P2_BKP_SHIFT 12
92#define S4_P2_SHIFT 12
93#define S4_P2_BKP_SHIFT 18
94#define S5_P2_SHIFT 18
95#define S5_P2_BKP_SHIFT 24
96#define S6_P2_SHIFT 24
97#define S7_P2_BKP_SHIFT 6
98#define S8_P2_SHIFT 6
99#define S8_P2_BKP_SHIFT 12
100#define S9_P2_SHIFT 12
101#define S9_P2_BKP_SHIFT 18
102#define S10_P2_SHIFT 18
103#define S10_P2_BKP_SHIFT 24
104
105#define BASE2_MASK 0xff000
106#define BASE2_BKP_MASK 0xfc0000
107#define S0_P2_MASK 0x3f00000
108#define S0_P2_BKP_MASK 0xfc000000
109#define S1_P2_MASK 0xfc000000
110#define S1_P2_BKP_MASK 0x3f
111#define S2_P2_MASK 0x3f
112#define S2_P2_BKP_MASK 0xfc0
113#define S3_P2_MASK 0xfc0
114#define S3_P2_BKP_MASK 0x3f000
115#define S4_P2_MASK 0x3f000
116#define S4_P2_BKP_MASK 0xfc0000
117#define S5_P2_MASK 0xfc0000
118#define S5_P2_BKP_MASK 0x3f000000
119#define S6_P2_MASK 0x3f000000
120#define S6_P2_BKP_MASK 0x3f
121#define S7_P2_MASK 0x3f
122#define S7_P2_BKP_MASK 0xfc0
123#define S8_P2_MASK 0xfc0
124#define S8_P2_BKP_MASK 0x3f000
125#define S9_P2_MASK 0x3f000
126#define S9_P2_BKP_MASK 0xfc0000
127#define S10_P2_MASK 0xfc0000
128#define S10_P2_BKP_MASK 0x3f000000
129
130#define BKP_SEL 0x3
131#define BKP_REDUN_SEL 0xe0000000
132#define BKP_REDUN_SHIFT 29
133
134#define BIT_APPEND 0x3
135
136static int calibrate_8916(struct tsens_priv *priv)
137{
138 int base0 = 0, base1 = 0, i;
139 u32 p1[5], p2[5];
140 int mode = 0;
141 u32 *qfprom_cdata, *qfprom_csel;
142
143 qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
144 if (IS_ERR(qfprom_cdata))
145 return PTR_ERR(qfprom_cdata);
146
147 qfprom_csel = (u32 *)qfprom_read(priv->dev, "calib_sel");
148 if (IS_ERR(qfprom_csel)) {
149 kfree(qfprom_cdata);
150 return PTR_ERR(qfprom_csel);
151 }
152
153 mode = (qfprom_csel[0] & MSM8916_CAL_SEL_MASK) >> MSM8916_CAL_SEL_SHIFT;
154 dev_dbg(priv->dev, "calibration mode is %d\n", mode);
155
156 switch (mode) {
157 case TWO_PT_CALIB:
158 base1 = (qfprom_cdata[1] & MSM8916_BASE1_MASK) >> MSM8916_BASE1_SHIFT;
159 p2[0] = (qfprom_cdata[0] & MSM8916_S0_P2_MASK) >> MSM8916_S0_P2_SHIFT;
160 p2[1] = (qfprom_cdata[0] & MSM8916_S1_P2_MASK) >> MSM8916_S1_P2_SHIFT;
161 p2[2] = (qfprom_cdata[1] & MSM8916_S2_P2_MASK) >> MSM8916_S2_P2_SHIFT;
162 p2[3] = (qfprom_cdata[1] & MSM8916_S3_P2_MASK) >> MSM8916_S3_P2_SHIFT;
163 p2[4] = (qfprom_cdata[1] & MSM8916_S4_P2_MASK) >> MSM8916_S4_P2_SHIFT;
164 for (i = 0; i < priv->num_sensors; i++)
165 p2[i] = ((base1 + p2[i]) << 3);
166 /* Fall through */
167 case ONE_PT_CALIB2:
168 base0 = (qfprom_cdata[0] & MSM8916_BASE0_MASK);
169 p1[0] = (qfprom_cdata[0] & MSM8916_S0_P1_MASK) >> MSM8916_S0_P1_SHIFT;
170 p1[1] = (qfprom_cdata[0] & MSM8916_S1_P1_MASK) >> MSM8916_S1_P1_SHIFT;
171 p1[2] = (qfprom_cdata[0] & MSM8916_S2_P1_MASK) >> MSM8916_S2_P1_SHIFT;
172 p1[3] = (qfprom_cdata[1] & MSM8916_S3_P1_MASK) >> MSM8916_S3_P1_SHIFT;
173 p1[4] = (qfprom_cdata[1] & MSM8916_S4_P1_MASK) >> MSM8916_S4_P1_SHIFT;
174 for (i = 0; i < priv->num_sensors; i++)
175 p1[i] = (((base0) + p1[i]) << 3);
176 break;
177 default:
178 for (i = 0; i < priv->num_sensors; i++) {
179 p1[i] = 500;
180 p2[i] = 780;
181 }
182 break;
183 }
184
185 compute_intercept_slope(priv, p1, p2, mode);
186 kfree(qfprom_cdata);
187 kfree(qfprom_csel);
188
189 return 0;
190}
191
192static int calibrate_8974(struct tsens_priv *priv)
193{
194 int base1 = 0, base2 = 0, i;
195 u32 p1[11], p2[11];
196 int mode = 0;
197 u32 *calib, *bkp;
198 u32 calib_redun_sel;
199
200 calib = (u32 *)qfprom_read(priv->dev, "calib");
201 if (IS_ERR(calib))
202 return PTR_ERR(calib);
203
204 bkp = (u32 *)qfprom_read(priv->dev, "calib_backup");
205 if (IS_ERR(bkp)) {
206 kfree(calib);
207 return PTR_ERR(bkp);
208 }
209
210 calib_redun_sel = bkp[1] & BKP_REDUN_SEL;
211 calib_redun_sel >>= BKP_REDUN_SHIFT;
212
213 if (calib_redun_sel == BKP_SEL) {
214 mode = (calib[4] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
215 mode |= (calib[5] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;
216
217 switch (mode) {
218 case TWO_PT_CALIB:
219 base2 = (bkp[2] & BASE2_BKP_MASK) >> BASE2_BKP_SHIFT;
220 p2[0] = (bkp[2] & S0_P2_BKP_MASK) >> S0_P2_BKP_SHIFT;
221 p2[1] = (bkp[3] & S1_P2_BKP_MASK);
222 p2[2] = (bkp[3] & S2_P2_BKP_MASK) >> S2_P2_BKP_SHIFT;
223 p2[3] = (bkp[3] & S3_P2_BKP_MASK) >> S3_P2_BKP_SHIFT;
224 p2[4] = (bkp[3] & S4_P2_BKP_MASK) >> S4_P2_BKP_SHIFT;
225 p2[5] = (calib[4] & S5_P2_BKP_MASK) >> S5_P2_BKP_SHIFT;
226 p2[6] = (calib[5] & S6_P2_BKP_MASK);
227 p2[7] = (calib[5] & S7_P2_BKP_MASK) >> S7_P2_BKP_SHIFT;
228 p2[8] = (calib[5] & S8_P2_BKP_MASK) >> S8_P2_BKP_SHIFT;
229 p2[9] = (calib[5] & S9_P2_BKP_MASK) >> S9_P2_BKP_SHIFT;
230 p2[10] = (calib[5] & S10_P2_BKP_MASK) >> S10_P2_BKP_SHIFT;
231 /* Fall through */
232 case ONE_PT_CALIB:
233 case ONE_PT_CALIB2:
234 base1 = bkp[0] & BASE1_MASK;
235 p1[0] = (bkp[0] & S0_P1_MASK) >> S0_P1_SHIFT;
236 p1[1] = (bkp[0] & S1_P1_MASK) >> S1_P1_SHIFT;
237 p1[2] = (bkp[0] & S2_P1_MASK) >> S2_P1_SHIFT;
238 p1[3] = (bkp[0] & S3_P1_MASK) >> S3_P1_SHIFT;
239 p1[4] = (bkp[1] & S4_P1_MASK);
240 p1[5] = (bkp[1] & S5_P1_MASK) >> S5_P1_SHIFT;
241 p1[6] = (bkp[1] & S6_P1_MASK) >> S6_P1_SHIFT;
242 p1[7] = (bkp[1] & S7_P1_MASK) >> S7_P1_SHIFT;
243 p1[8] = (bkp[2] & S8_P1_MASK_BKP) >> S8_P1_SHIFT;
244 p1[9] = (bkp[2] & S9_P1_MASK_BKP) >> S9_P1_BKP_SHIFT;
245 p1[10] = (bkp[2] & S10_P1_MASK_BKP) >> S10_P1_BKP_SHIFT;
246 break;
247 }
248 } else {
249 mode = (calib[1] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
250 mode |= (calib[3] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;
251
252 switch (mode) {
253 case TWO_PT_CALIB:
254 base2 = (calib[2] & BASE2_MASK) >> BASE2_SHIFT;
255 p2[0] = (calib[2] & S0_P2_MASK) >> S0_P2_SHIFT;
256 p2[1] = (calib[2] & S1_P2_MASK) >> S1_P2_SHIFT;
257 p2[2] = (calib[3] & S2_P2_MASK);
258 p2[3] = (calib[3] & S3_P2_MASK) >> S3_P2_SHIFT;
259 p2[4] = (calib[3] & S4_P2_MASK) >> S4_P2_SHIFT;
260 p2[5] = (calib[3] & S5_P2_MASK) >> S5_P2_SHIFT;
261 p2[6] = (calib[3] & S6_P2_MASK) >> S6_P2_SHIFT;
262 p2[7] = (calib[4] & S7_P2_MASK);
263 p2[8] = (calib[4] & S8_P2_MASK) >> S8_P2_SHIFT;
264 p2[9] = (calib[4] & S9_P2_MASK) >> S9_P2_SHIFT;
265 p2[10] = (calib[4] & S10_P2_MASK) >> S10_P2_SHIFT;
266 /* Fall through */
267 case ONE_PT_CALIB:
268 case ONE_PT_CALIB2:
269 base1 = calib[0] & BASE1_MASK;
270 p1[0] = (calib[0] & S0_P1_MASK) >> S0_P1_SHIFT;
271 p1[1] = (calib[0] & S1_P1_MASK) >> S1_P1_SHIFT;
272 p1[2] = (calib[0] & S2_P1_MASK) >> S2_P1_SHIFT;
273 p1[3] = (calib[0] & S3_P1_MASK) >> S3_P1_SHIFT;
274 p1[4] = (calib[1] & S4_P1_MASK);
275 p1[5] = (calib[1] & S5_P1_MASK) >> S5_P1_SHIFT;
276 p1[6] = (calib[1] & S6_P1_MASK) >> S6_P1_SHIFT;
277 p1[7] = (calib[1] & S7_P1_MASK) >> S7_P1_SHIFT;
278 p1[8] = (calib[1] & S8_P1_MASK) >> S8_P1_SHIFT;
279 p1[9] = (calib[2] & S9_P1_MASK);
280 p1[10] = (calib[2] & S10_P1_MASK) >> S10_P1_SHIFT;
281 break;
282 }
283 }
284
285 switch (mode) {
286 case ONE_PT_CALIB:
287 for (i = 0; i < priv->num_sensors; i++)
288 p1[i] += (base1 << 2) | BIT_APPEND;
289 break;
290 case TWO_PT_CALIB:
291 for (i = 0; i < priv->num_sensors; i++) {
292 p2[i] += base2;
293 p2[i] <<= 2;
294 p2[i] |= BIT_APPEND;
295 }
296 /* Fall through */
297 case ONE_PT_CALIB2:
298 for (i = 0; i < priv->num_sensors; i++) {
299 p1[i] += base1;
300 p1[i] <<= 2;
301 p1[i] |= BIT_APPEND;
302 }
303 break;
304 default:
305 for (i = 0; i < priv->num_sensors; i++)
306 p2[i] = 780;
307 p1[0] = 502;
308 p1[1] = 509;
309 p1[2] = 503;
310 p1[3] = 509;
311 p1[4] = 505;
312 p1[5] = 509;
313 p1[6] = 507;
314 p1[7] = 510;
315 p1[8] = 508;
316 p1[9] = 509;
317 p1[10] = 508;
318 break;
319 }
320
321 compute_intercept_slope(priv, p1, p2, mode);
322 kfree(calib);
323 kfree(bkp);
324
325 return 0;
326}
327
328/* v0.1: 8916, 8974 */
329
330static const struct tsens_features tsens_v0_1_feat = {
331 .ver_major = VER_0_1,
332 .crit_int = 0,
333 .adc = 1,
334 .srot_split = 1,
335 .max_sensors = 11,
336};
337
338static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = {
339 /* ----- SROT ------ */
340 /* No VERSION information */
341
342 /* CTRL_OFFSET */
343 [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
344 [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
345
346 /* ----- TM ------ */
347 /* INTERRUPT ENABLE */
348 [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0),
349
350 /* Sn_STATUS */
351 REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9),
352 /* No VALID field on v0.1 */
353 REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10),
354 REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11),
355 REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12),
356 /* No CRITICAL field on v0.1 */
357 REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13),
358
359 /* TRDY: 1=ready, 0=in progress */
360 [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
361};
362
363static const struct tsens_ops ops_8916 = {
364 .init = init_common,
365 .calibrate = calibrate_8916,
366 .get_temp = get_temp_common,
367};
368
369const struct tsens_plat_data data_8916 = {
370 .num_sensors = 5,
371 .ops = &ops_8916,
372 .hw_ids = (unsigned int []){0, 1, 2, 4, 5 },
373
374 .feat = &tsens_v0_1_feat,
375 .fields = tsens_v0_1_regfields,
376};
377
378static const struct tsens_ops ops_8974 = {
379 .init = init_common,
380 .calibrate = calibrate_8974,
381 .get_temp = get_temp_common,
382};
383
384const struct tsens_plat_data data_8974 = {
385 .num_sensors = 11,
386 .ops = &ops_8974,
387 .feat = &tsens_v0_1_feat,
388 .fields = tsens_v0_1_regfields,
389};