// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
* Copyright (c) 2019, 2020, Linaro Ltd.
*/
#include <linux/debugfs.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/nvmem-consumer.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/mfd/syscon.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/thermal.h>
#include "../thermal_hwmon.h"
#include "tsens.h"
/**
* struct tsens_irq_data - IRQ status and temperature violations
* @up_viol: upper threshold violated
* @up_thresh: upper threshold temperature value
* @up_irq_mask: mask register for upper threshold irqs
* @up_irq_clear: clear register for uppper threshold irqs
* @low_viol: lower threshold violated
* @low_thresh: lower threshold temperature value
* @low_irq_mask: mask register for lower threshold irqs
* @low_irq_clear: clear register for lower threshold irqs
* @crit_viol: critical threshold violated
* @crit_thresh: critical threshold temperature value
* @crit_irq_mask: mask register for critical threshold irqs
* @crit_irq_clear: clear register for critical threshold irqs
*
* Structure containing data about temperature threshold settings and
* irq status if they were violated.
*/
struct tsens_irq_data {
u32 up_viol;
int up_thresh;
u32 up_irq_mask;
u32 up_irq_clear;
u32 low_viol;
int low_thresh;
u32 low_irq_mask;
u32 low_irq_clear;
u32 crit_viol;
u32 crit_thresh;
u32 crit_irq_mask;
u32 crit_irq_clear;
};
char *qfprom_read(struct device *dev, const char *cname)
{
struct nvmem_cell *cell;
ssize_t data;
char *ret;
cell = nvmem_cell_get(dev, cname);
if (IS_ERR(cell))
return ERR_CAST(cell);
ret = nvmem_cell_read(cell, &data);
nvmem_cell_put(cell);
return ret;
}
int tsens_read_calibration(struct tsens_priv *priv, int shift, u32 *p1, u32 *p2, bool backup)
{
u32 mode;
u32 base1, base2;
char name[] = "sXX_pY_backup"; /* s10_p1_backup */
int i, ret;
if (priv->num_sensors > MAX_SENSORS)
return -EINVAL;
ret = snprintf(name, sizeof(name), "mode%s", backup ? "_backup" : "");
if (ret < 0)
return ret;
ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &mode);
if (ret == -ENOENT)
dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n");
if (ret < 0)
return ret;
dev_dbg(priv->dev, "calibration mode is %d\n", mode);
ret <