add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
..
..
@@ -1,30 +1,22 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
1
2
 /*
2
3
  * HID Sensors Driver
3
4
  * Copyright (c) 2012, Intel Corporation.
4
- *
5
- * This program is free software; you can redistribute it and/or modify it
6
- * under the terms and conditions of the GNU General Public License,
7
- * version 2, as published by the Free Software Foundation.
8
- *
9
- * This program is distributed in the hope it will be useful, but WITHOUT
10
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12
- * more details.
13
- *
14
- * You should have received a copy of the GNU General Public License along with
15
- * this program; if not, write to the Free Software Foundation, Inc.,
16
- * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17
- *
18
5
  */
19
6
 #include <linux/device.h>
20
7
 #include <linux/platform_device.h>
21
8
 #include <linux/module.h>
22
9
 #include <linux/interrupt.h>
23
10
 #include <linux/irq.h>
11
+#include <linux/kernel.h>
24
12
 #include <linux/slab.h>
13
+#include <linux/time.h>
14
+
25
15
 #include <linux/hid-sensor-hub.h>
26
16
 #include <linux/iio/iio.h>
27
17
 #include <linux/iio/sysfs.h>
18
+
19
+#define HZ_PER_MHZ	1000000L
28
20
 
29
21
 static struct {
30
22
 	u32 usage_id;
..
..
@@ -81,16 +73,6 @@
81
73
 	{HID_USAGE_SENSOR_HUMIDITY, 0, 1000, 0},
82
74
 };
83
75
 
84
-static int pow_10(unsigned power)
85
-{
86
-	int i;
87
-	int ret = 1;
88
-	for (i = 0; i < power; ++i)
89
-		ret = ret * 10;
90
-
91
-	return ret;
92
-}
93
-
94
76
 static void simple_div(int dividend, int divisor, int *whole,
95
77
 				int *micro_frac)
96
78
 {
..
..
@@ -109,14 +91,16 @@
109
91
 			rem *= 10;
110
92
 			exp++;
111
93
 		}
112
-		*micro_frac = (rem / divisor) * pow_10(6-exp);
94
+		*micro_frac = (rem / divisor) * int_pow(10, 6 - exp);
113
95
 	}
114
96
 }
115
97
 
116
98
 static void split_micro_fraction(unsigned int no, int exp, int *val1, int *val2)
117
99
 {
118
-	*val1 = no/pow_10(exp);
119
-	*val2 = no%pow_10(exp) * pow_10(6-exp);
100
+	int divisor = int_pow(10, exp);
101
+
102
+	*val1 = no / divisor;
103
+	*val2 = no % divisor * int_pow(10, 6 - exp);
120
104
 }
121
105
 
122
106
 /*
..
..
@@ -138,7 +122,7 @@
138
122
 	}
139
123
 	exp = hid_sensor_convert_exponent(exp);
140
124
 	if (exp >= 0) {
141
-		*val1 = sign * value * pow_10(exp);
125
+		*val1 = sign * value * int_pow(10, exp);
142
126
 		*val2 = 0;
143
127
 	} else {
144
128
 		split_micro_fraction(value, -exp, val1, val2);
..
..
@@ -151,6 +135,7 @@
151
135
 
152
136
 static u32 convert_to_vtf_format(int size, int exp, int val1, int val2)
153
137
 {
138
+	int divisor;
154
139
 	u32 value;
155
140
 	int sign = 1;
156
141
 
..
..
@@ -158,10 +143,13 @@
158
143
 		sign = -1;
159
144
 	exp = hid_sensor_convert_exponent(exp);
160
145
 	if (exp < 0) {
161
-		value = abs(val1) * pow_10(-exp);
162
-		value += abs(val2) / pow_10(6+exp);
163
-	} else
164
-		value = abs(val1) / pow_10(exp);
146
+		divisor = int_pow(10, 6 + exp);
147
+		value = abs(val1) * int_pow(10, -exp);
148
+		value += abs(val2) / divisor;
149
+	} else {
150
+		divisor = int_pow(10, exp);
151
+		value = abs(val1) / divisor;
152
+	}
165
153
 	if (sign < 0)
166
154
 		value =  ((1LL << (size * 8)) - value);
167
155
 
..
..
@@ -224,12 +212,12 @@
224
212
 	if (val1 < 0 || val2 < 0)
225
213
 		return -EINVAL;
226
214
 
227
-	value = val1 * pow_10(6) + val2;
215
+	value = val1 * HZ_PER_MHZ + val2;
228
216
 	if (value) {
229
217
 		if (st->poll.units == HID_USAGE_SENSOR_UNITS_MILLISECOND)
230
-			value = pow_10(9)/value;
218
+			value = NSEC_PER_SEC / value;
231
219
 		else if (st->poll.units == HID_USAGE_SENSOR_UNITS_SECOND)
232
-			value = pow_10(6)/value;
220
+			value = USEC_PER_SEC / value;
233
221
 		else
234
222
 			value = 0;
235
223
 	}
..
..
@@ -318,40 +306,44 @@
318
306
 static void adjust_exponent_nano(int *val0, int *val1, int scale0,
319
307
 				  int scale1, int exp)
320
308
 {
309
+	int divisor;
321
310
 	int i;
322
311
 	int x;
323
312
 	int res;
324
313
 	int rem;
325
314
 
326
315
 	if (exp > 0) {
327
-		*val0 = scale0 * pow_10(exp);
316
+		*val0 = scale0 * int_pow(10, exp);
328
317
 		res = 0;
329
318
 		if (exp > 9) {
330
319
 			*val1 = 0;
331
320
 			return;
332
321
 		}
333
322
 		for (i = 0; i < exp; ++i) {
334
-			x = scale1 / pow_10(8 - i);
335
-			res += (pow_10(exp - 1 - i) * x);
336
-			scale1 = scale1 % pow_10(8 - i);
323
+			divisor = int_pow(10, 8 - i);
324
+			x = scale1 / divisor;
325
+			res += int_pow(10, exp - 1 - i) * x;
326
+			scale1 = scale1 % divisor;
337
327
 		}
338
328
 		*val0 += res;
339
-			*val1 = scale1 * pow_10(exp);
329
+		*val1 = scale1 * int_pow(10, exp);
340
330
 	} else if (exp < 0) {
341
331
 		exp = abs(exp);
342
332
 		if (exp > 9) {
343
333
 			*val0 = *val1 = 0;
344
334
 			return;
345
335
 		}
346
-		*val0 = scale0 / pow_10(exp);
347
-		rem = scale0 % pow_10(exp);
336
+		divisor = int_pow(10, exp);
337
+		*val0 = scale0 / divisor;
338
+		rem = scale0 % divisor;
348
339
 		res = 0;
349
340
 		for (i = 0; i < (9 - exp); ++i) {
350
-			x = scale1 / pow_10(8 - i);
351
-			res += (pow_10(8 - exp - i) * x);
352
-			scale1 = scale1 % pow_10(8 - i);
341
+			divisor = int_pow(10, 8 - i);
342
+			x = scale1 / divisor;
343
+			res += int_pow(10, 8 - exp - i) * x;
344
+			scale1 = scale1 % divisor;
353
345
 		}
354
-		*val1 = rem * pow_10(9 - exp) + res;
346
+		*val1 = rem * int_pow(10, 9 - exp) + res;
355
347
 	} else {
356
348
 		*val0 = scale0;
357
349
 		*val1 = scale1;