1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
6 #include <linux/platform_device.h>
9 /* eeprom layout data for 8916 */
10 #define BASE0_MASK 0x0000007f
11 #define BASE1_MASK 0xfe000000
13 #define BASE1_SHIFT 25
15 #define S0_P1_MASK 0x00000f80
16 #define S1_P1_MASK 0x003e0000
17 #define S2_P1_MASK 0xf8000000
18 #define S3_P1_MASK 0x000003e0
19 #define S4_P1_MASK 0x000f8000
21 #define S0_P2_MASK 0x0001f000
22 #define S1_P2_MASK 0x07c00000
23 #define S2_P2_MASK 0x0000001f
24 #define S3_P2_MASK 0x00007c00
25 #define S4_P2_MASK 0x01f00000
28 #define S1_P1_SHIFT 17
29 #define S2_P1_SHIFT 27
31 #define S4_P1_SHIFT 15
33 #define S0_P2_SHIFT 12
34 #define S1_P2_SHIFT 22
36 #define S3_P2_SHIFT 10
37 #define S4_P2_SHIFT 20
39 #define CAL_SEL_MASK 0xe0000000
40 #define CAL_SEL_SHIFT 29
42 static int calibrate_8916(struct tsens_priv *priv)
44 int base0 = 0, base1 = 0, i;
47 u32 *qfprom_cdata, *qfprom_csel;
49 qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
50 if (IS_ERR(qfprom_cdata))
51 return PTR_ERR(qfprom_cdata);
53 qfprom_csel = (u32 *)qfprom_read(priv->dev, "calib_sel");
54 if (IS_ERR(qfprom_csel))
55 return PTR_ERR(qfprom_csel);
57 mode = (qfprom_csel[0] & CAL_SEL_MASK) >> CAL_SEL_SHIFT;
58 dev_dbg(priv->dev, "calibration mode is %d\n", mode);
62 base1 = (qfprom_cdata[1] & BASE1_MASK) >> BASE1_SHIFT;
63 p2[0] = (qfprom_cdata[0] & S0_P2_MASK) >> S0_P2_SHIFT;
64 p2[1] = (qfprom_cdata[0] & S1_P2_MASK) >> S1_P2_SHIFT;
65 p2[2] = (qfprom_cdata[1] & S2_P2_MASK) >> S2_P2_SHIFT;
66 p2[3] = (qfprom_cdata[1] & S3_P2_MASK) >> S3_P2_SHIFT;
67 p2[4] = (qfprom_cdata[1] & S4_P2_MASK) >> S4_P2_SHIFT;
68 for (i = 0; i < priv->num_sensors; i++)
69 p2[i] = ((base1 + p2[i]) << 3);
72 base0 = (qfprom_cdata[0] & BASE0_MASK);
73 p1[0] = (qfprom_cdata[0] & S0_P1_MASK) >> S0_P1_SHIFT;
74 p1[1] = (qfprom_cdata[0] & S1_P1_MASK) >> S1_P1_SHIFT;
75 p1[2] = (qfprom_cdata[0] & S2_P1_MASK) >> S2_P1_SHIFT;
76 p1[3] = (qfprom_cdata[1] & S3_P1_MASK) >> S3_P1_SHIFT;
77 p1[4] = (qfprom_cdata[1] & S4_P1_MASK) >> S4_P1_SHIFT;
78 for (i = 0; i < priv->num_sensors; i++)
79 p1[i] = (((base0) + p1[i]) << 3);
82 for (i = 0; i < priv->num_sensors; i++) {
89 compute_intercept_slope(priv, p1, p2, mode);
94 static const struct tsens_ops ops_8916 = {
96 .calibrate = calibrate_8916,
97 .get_temp = get_temp_common,
100 const struct tsens_plat_data data_8916 = {
103 .reg_offsets = { [SROT_CTRL_OFFSET] = 0x0 },
104 .hw_ids = (unsigned int []){0, 1, 2, 4, 5 },