412 lines
9.9 KiB
C
412 lines
9.9 KiB
C
/*
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* Copyright (C) 2014-2020 NXP Semiconductors, All Rights Reserved.
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* Copyright 2020 GOODIX, All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include "inc/tfa_sysfs.h"
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#define TFA_CAL_DEV_NAME "tfa_cal"
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#define FILESIZE_CAL (10)
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/* ---------------------------------------------------------------------- */
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static ssize_t rdc_show(struct device *dev,
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struct device_attribute *attr, char *buf);
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static ssize_t rdc_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size);
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static DEVICE_ATTR_RW(rdc);
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static ssize_t temp_show(struct device *dev,
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struct device_attribute *attr, char *buf);
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static ssize_t temp_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size);
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static DEVICE_ATTR_RW(temp);
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#if defined(TFA_STEREO_NODE)
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static ssize_t rdc_r_show(struct device *dev,
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struct device_attribute *attr, char *buf);
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static ssize_t rdc_r_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size);
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static DEVICE_ATTR_RW(rdc_r);
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static ssize_t temp_r_show(struct device *dev,
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struct device_attribute *attr, char *buf);
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static ssize_t temp_r_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size);
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static DEVICE_ATTR_RW(temp_r);
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#endif /* TFA_STEREO_NODE */
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static ssize_t status_show(struct device *dev,
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struct device_attribute *attr, char *buf);
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static ssize_t status_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size);
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static DEVICE_ATTR_RW(status);
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static struct attribute *tfa_cal_attr[] = {
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&dev_attr_rdc.attr,
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&dev_attr_temp.attr,
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#if defined(TFA_STEREO_NODE)
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&dev_attr_rdc_r.attr,
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&dev_attr_temp_r.attr,
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#endif /* TFA_STEREO_NODE */
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&dev_attr_status.attr,
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NULL,
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};
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static struct attribute_group tfa_cal_attr_grp = {
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.attrs = tfa_cal_attr,
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};
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struct tfa_cal {
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int rdc;
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int temp;
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};
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/* ---------------------------------------------------------------------- */
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static struct device *tfa_cal_dev;
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static int cur_status;
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static struct tfa_cal cal_data[MAX_HANDLES];
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/* ---------------------------------------------------------------------- */
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static ssize_t update_rdc_status(int idx, char *buf)
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{
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struct tfa_device *tfa = NULL;
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int ret = 0;
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uint16_t value;
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int size;
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char cal_result[FILESIZE_CAL] = {0};
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tfa = tfa98xx_get_tfa_device_from_index(0);
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if (tfa == NULL)
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return -EINVAL; /* unused device */
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if (idx < 0 || idx >= tfa->dev_count)
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return -EINVAL;
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if (cal_data[idx].rdc == 0
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|| cal_data[idx].rdc == 0xffff) {
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ret = tfa_get_cal_data(idx, &value);
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if (ret == TFA98XX_ERROR_NOT_OPEN)
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value = 0xffff; /* unused device */
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if (ret) {
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pr_info("%s: tfa_cal failed to read data from amplifier\n",
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__func__);
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value = 0;
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}
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if (value == 0xffff)
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pr_info("%s: tfa_cal read wrong data from amplifier\n",
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__func__);
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cal_data[idx].rdc = value;
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}
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snprintf(cal_result, FILESIZE_CAL,
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"%d", cal_data[idx].rdc);
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if (cal_result[0] == 0)
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size = snprintf(buf, 7 + 1, "no_data");
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else
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size = snprintf(buf, strlen(cal_result) + 1,
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"%s", cal_result);
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if (size <= 0) {
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pr_err("%s: tfa_cal failed to show in sysfs file\n", __func__);
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return -EINVAL;
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}
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return size;
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}
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static ssize_t update_temp_status(int idx, char *buf)
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{
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struct tfa_device *tfa = NULL;
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int ret = 0;
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uint16_t value;
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int size;
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char cal_result[FILESIZE_CAL] = {0};
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tfa = tfa98xx_get_tfa_device_from_index(0);
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if (tfa == NULL)
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return -EINVAL; /* unused device */
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if (idx < 0 || idx >= tfa->dev_count)
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return -EINVAL;
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if (cal_data[idx].temp == 0
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|| cal_data[idx].temp == 0xffff) {
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ret = tfa_get_cal_temp(idx, &value);
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if (ret == TFA98XX_ERROR_NOT_OPEN)
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value = 0xffff; /* unused device */
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if (ret) {
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pr_info("%s: tfa_cal failed to read temp from amplifier\n",
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__func__);
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value = 0;
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}
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if (value == 0xffff)
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pr_info("%s: tfa_cal read wrong temp from amplifier\n",
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__func__);
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cal_data[idx].temp = value;
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}
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snprintf(cal_result, FILESIZE_CAL,
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"%d", cal_data[idx].temp);
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if (cal_result[0] == 0)
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size = snprintf(buf, 7 + 1, "no_data");
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else
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size = snprintf(buf, strlen(cal_result) + 1,
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"%s", cal_result);
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if (size <= 0) {
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pr_err("%s: tfa_cal failed to show in sysfs file\n", __func__);
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return -EINVAL;
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}
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return size;
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}
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static ssize_t rdc_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int idx = tfa_get_dev_idx_from_inchannel(0);
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int ret;
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ret = update_rdc_status(idx, buf);
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if (ret > 0)
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pr_info("%s: tfa_cal - dev %d - calibration data (rdc %d)\n",
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__func__, idx, cal_data[idx].rdc);
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else
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pr_err("%s: tfa_cal dev %d - error %d\n",
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__func__, idx, ret);
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return ret;
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}
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static ssize_t rdc_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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pr_info("%s: dev %d - not allowed to write calibration data\n",
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__func__, tfa_get_dev_idx_from_inchannel(0));
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return size;
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}
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static ssize_t temp_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int idx = tfa_get_dev_idx_from_inchannel(0);
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int ret;
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ret = update_temp_status(idx, buf);
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if (ret > 0)
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pr_info("%s: tfa_cal - dev %d - calibration data (temp %d)\n",
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__func__, idx, cal_data[idx].temp);
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else
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pr_err("%s: tfa_cal dev %d - error %d\n",
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__func__, idx, ret);
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return ret;
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}
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static ssize_t temp_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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pr_info("%s: dev %d - not allowed to write temperature in calibration\n",
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__func__, tfa_get_dev_idx_from_inchannel(0));
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return size;
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}
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#if defined(TFA_STEREO_NODE)
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static ssize_t rdc_r_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int idx = tfa_get_dev_idx_from_inchannel(1);
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int ret;
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ret = update_rdc_status(idx, buf);
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if (ret > 0)
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pr_info("%s: tfa_cal - dev %d - calibration data (rdc %d)\n",
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__func__, idx, cal_data[idx].rdc);
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else
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pr_err("%s: tfa_cal dev %d - error %d\n",
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__func__, idx, ret);
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return ret;
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}
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static ssize_t rdc_r_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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pr_info("%s: dev %d - not allowed to write calibration data\n",
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__func__, tfa_get_dev_idx_from_inchannel(1));
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return size;
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}
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static ssize_t temp_r_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int idx = tfa_get_dev_idx_from_inchannel(1);
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int ret;
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ret = update_temp_status(idx, buf);
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if (ret > 0)
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pr_info("%s: tfa_cal - dev %d - calibration data (temp %d)\n",
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__func__, idx, cal_data[idx].temp);
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else
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pr_err("%s: tfa_cal dev %d - error %d\n",
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__func__, idx, ret);
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return ret;
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}
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static ssize_t temp_r_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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pr_info("%s: dev %d - not allowed to write temperature in calibration\n",
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__func__, tfa_get_dev_idx_from_inchannel(1));
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return size;
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}
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#endif /* TFA_STEREO_NODE */
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static ssize_t status_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int size;
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char cal_state[FILESIZE_CAL] = {0};
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snprintf(cal_state, FILESIZE_CAL,
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"%s", cur_status ?
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"enabled" /* calibration is active */
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: "disabled"); /* calibration is inactive */
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size = snprintf(buf, strlen(cal_state) + 1,
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"%s", cal_state);
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return size;
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}
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static ssize_t status_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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struct tfa_device *tfa = NULL;
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int idx, ndev = MAX_HANDLES;
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uint16_t value;
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int ret = 0, status;
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/* Compare string, excluding the trailing \0 and the potentials eol */
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if (!sysfs_streq(buf, "1") && !sysfs_streq(buf, "0")) {
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pr_info("%s: tfa_cal invalid value to start calibration\n",
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__func__);
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return -EINVAL;
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}
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ret = kstrtou32(buf, 10, &status);
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if (!status) {
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pr_info("%s: do nothing\n", __func__);
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return -EINVAL;
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}
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if (cur_status)
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pr_info("%s: tfa_cal prior calibration still runs\n", __func__);
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pr_info("%s: tfa_cal begin\n", __func__);
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cur_status = status; /* run - changed to active */
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memset(cal_data, 0, sizeof(struct tfa_cal) * MAX_HANDLES);
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/* run calibration */
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ret = tfa_run_cal(0, &value);
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if (ret == TFA98XX_ERROR_NOT_OPEN)
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return -EINVAL; /* unused device */
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if (ret) {
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pr_info("%s: tfa_cal failed to calibrate speaker\n", __func__);
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return -EINVAL;
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}
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cur_status = 0; /* done - changed to inactive */
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tfa = tfa98xx_get_tfa_device_from_index(0);
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if (tfa == NULL)
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return -EINVAL; /* unused device */
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ndev = tfa->dev_count;
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if (ndev < 1)
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return -EINVAL;
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for (idx = 0; idx < ndev; idx++) {
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/* read data to store */
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ret = tfa_get_cal_data(idx, &value);
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if (ret) {
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pr_info("%s: tfa_cal failed to read data after calibration\n",
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__func__);
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continue;
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}
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if (value == 0xffff) {
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pr_info("%s: tfa_cal invalid data\n", __func__);
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return -EINVAL;
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}
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cal_data[idx].rdc = value;
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/* read temp to store */
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ret = tfa_get_cal_temp(idx, &value);
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if (ret) {
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pr_info("%s: tfa_cal failed to read temp after calibration\n",
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__func__);
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continue;
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}
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if (value == 0xffff) {
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pr_info("%s: tfa_cal invalid data\n", __func__);
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return -EINVAL;
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}
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cal_data[idx].temp = value;
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pr_info("%s: tfa_cal - dev %d - calibration data (%d, %d)\n",
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__func__, idx, cal_data[idx].rdc, cal_data[idx].temp);
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}
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pr_info("%s: tfa_cal end\n", __func__);
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return size;
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}
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int tfa98xx_cal_init(struct class *tfa_class)
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{
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int ret = 0;
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if (tfa_class) {
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tfa_cal_dev = device_create(tfa_class,
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NULL, DEV_ID_TFA_CAL, NULL, TFA_CAL_DEV_NAME);
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if (!IS_ERR(tfa_cal_dev)) {
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ret = sysfs_create_group(&tfa_cal_dev->kobj,
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&tfa_cal_attr_grp);
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if (ret)
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pr_err("%s: failed to create sysfs group. ret (%d)\n",
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__func__, ret);
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}
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}
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pr_info("%s: initialized (%d)\n", __func__,
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(tfa_class != NULL) ? 1 : 0);
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return ret;
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}
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void tfa98xx_cal_exit(struct class *tfa_class)
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{
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device_destroy(tfa_class, DEV_ID_TFA_CAL);
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pr_info("exited\n");
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}
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