cm32181.c (f50f98310e51b3712a4e544c75615e89c8233125) cm32181.c (63b1be78774f8c3bdb9efd862ba7dfe8e2c056ff)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013 Capella Microsystems Inc.
4 * Author: Kevin Tsai <ktsai@capellamicro.com>
5 */
6
7#include <linux/delay.h>
8#include <linux/err.h>

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65};
66
67struct cm32181_chip {
68 struct i2c_client *client;
69 struct mutex lock;
70 u16 conf_regs[CM32181_CONF_REG_NUM];
71 unsigned long init_regs_bitmap;
72 int calibscale;
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013 Capella Microsystems Inc.
4 * Author: Kevin Tsai <ktsai@capellamicro.com>
5 */
6
7#include <linux/delay.h>
8#include <linux/err.h>

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65};
66
67struct cm32181_chip {
68 struct i2c_client *client;
69 struct mutex lock;
70 u16 conf_regs[CM32181_CONF_REG_NUM];
71 unsigned long init_regs_bitmap;
72 int calibscale;
73 int lux_per_bit;
74 int lux_per_bit_base_it;
73 int num_als_it;
74 const int *als_it_bits;
75 const int *als_it_values;
76};
77
78/**
79 * cm32181_reg_init() - Initialize CM32181 registers
80 * @cm32181: pointer of struct cm32181.

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110 return -ENODEV;
111 }
112
113 /* Default Values */
114 cm32181->conf_regs[CM32181_REG_ADDR_CMD] =
115 CM32181_CMD_ALS_IT_DEFAULT | CM32181_CMD_ALS_SM_DEFAULT;
116 cm32181->init_regs_bitmap = BIT(CM32181_REG_ADDR_CMD);
117 cm32181->calibscale = CM32181_CALIBSCALE_DEFAULT;
75 int num_als_it;
76 const int *als_it_bits;
77 const int *als_it_values;
78};
79
80/**
81 * cm32181_reg_init() - Initialize CM32181 registers
82 * @cm32181: pointer of struct cm32181.

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112 return -ENODEV;
113 }
114
115 /* Default Values */
116 cm32181->conf_regs[CM32181_REG_ADDR_CMD] =
117 CM32181_CMD_ALS_IT_DEFAULT | CM32181_CMD_ALS_SM_DEFAULT;
118 cm32181->init_regs_bitmap = BIT(CM32181_REG_ADDR_CMD);
119 cm32181->calibscale = CM32181_CALIBSCALE_DEFAULT;
120 cm32181->lux_per_bit = CM32181_LUX_PER_BIT;
121 cm32181->lux_per_bit_base_it = CM32181_LUX_PER_BIT_BASE_IT;
118
119 /* Initialize registers*/
120 for_each_set_bit(i, &cm32181->init_regs_bitmap, CM32181_CONF_REG_NUM) {
121 ret = i2c_smbus_write_word_data(client, i,
122 cm32181->conf_regs[i]);
123 if (ret < 0)
124 return ret;
125 }

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206 int ret;
207 int als_it;
208 u64 lux;
209
210 ret = cm32181_read_als_it(cm32181, &als_it);
211 if (ret < 0)
212 return -EINVAL;
213
122
123 /* Initialize registers*/
124 for_each_set_bit(i, &cm32181->init_regs_bitmap, CM32181_CONF_REG_NUM) {
125 ret = i2c_smbus_write_word_data(client, i,
126 cm32181->conf_regs[i]);
127 if (ret < 0)
128 return ret;
129 }

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210 int ret;
211 int als_it;
212 u64 lux;
213
214 ret = cm32181_read_als_it(cm32181, &als_it);
215 if (ret < 0)
216 return -EINVAL;
217
214 lux = CM32181_LUX_PER_BIT;
215 lux *= CM32181_LUX_PER_BIT_BASE_IT;
218 lux = cm32181->lux_per_bit;
219 lux *= cm32181->lux_per_bit_base_it;
216 lux = div_u64(lux, als_it);
217
218 ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ALS);
219 if (ret < 0)
220 return ret;
221
222 lux *= ret;
223 lux *= cm32181->calibscale;

--- 190 unchanged lines hidden --- 		220 lux = div_u64(lux, als_it);
221
222 ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ALS);
223 if (ret < 0)
224 return ret;
225
226 lux *= ret;
227 lux *= cm32181->calibscale;

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