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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-12-06 GuEe-GUI first version
*/
#include "dev_sdio_dm.h"
#define DBG_TAG "SDIO"
#ifdef RT_SDIO_DEBUG
#define DBG_LVL DBG_LOG
#else
#define DBG_LVL DBG_INFO
#endif /* RT_SDIO_DEBUG */
#include <rtdbg.h>
static rt_err_t ocrbitnum_to_vdd(int vdd_bit, int *min_uvolt, int *max_uvolt)
{
int tmp;
if (!vdd_bit)
{
return -RT_EINVAL;
}
tmp = vdd_bit - rt_ilog2(VDD_165_195);
if (tmp == 0)
{
*min_uvolt = 1650 * 1000;
*max_uvolt = 1950 * 1000;
}
else
{
*min_uvolt = 1900 * 1000 + tmp * 100 * 1000;
*max_uvolt = *min_uvolt + 100 * 1000;
}
return 0;
}
rt_err_t sdio_regulator_set_ocr(struct rt_mmcsd_host *host,
struct rt_regulator *supply, rt_uint16_t vdd_bit)
{
rt_err_t err = RT_EOK;
if (!host)
{
return -RT_EINVAL;
}
if (rt_is_err_or_null(supply))
{
return RT_EOK;
}
if (vdd_bit)
{
int min_uvolt, max_uvolt;
ocrbitnum_to_vdd(vdd_bit, &min_uvolt, &max_uvolt);
err = rt_regulator_set_voltage(supply, min_uvolt, max_uvolt);
if (!err && host->supply.regulator_enabled)
{
err = rt_regulator_enable(supply);
if (!err)
{
host->supply.regulator_enabled = RT_TRUE;
}
}
}
else if (host->supply.regulator_enabled)
{
err = rt_regulator_disable(supply);
if (!err)
{
host->supply.regulator_enabled = RT_FALSE;
}
}
if (err)
{
LOG_E("Set regulator OCR %d error = %s", vdd_bit, rt_strerror(err));
}
return err;
}
rt_bool_t sdio_regulator_supports_vqmmc_voltage(struct rt_regulator *regulator,
int min_uvolt, int target_uvolt, int max_uvolt)
{
if (!regulator)
{
return RT_FALSE;
}
if (rt_regulator_is_supported_voltage(regulator, min_uvolt, max_uvolt))
{
return RT_TRUE;
}
return rt_regulator_is_supported_voltage(regulator, target_uvolt, target_uvolt);
}
static int regulator_set_voltage_if_supported(struct rt_regulator *regulator,
int min_uvolt, int target_uvolt, int max_uvolt)
{
if (!regulator)
{
return -RT_EINVAL;
}
if (rt_regulator_get_voltage(regulator) == target_uvolt)
{
return RT_EOK;
}
if (rt_regulator_is_supported_voltage(regulator, min_uvolt, max_uvolt))
{
return rt_regulator_set_voltage_triplet(regulator, min_uvolt, target_uvolt,
max_uvolt);
}
/*
* gpio regulator may declare min above the SDHCI nominal range
* (e.g. 1.8V only) while still supporting the target voltage.
*/
if (rt_regulator_is_supported_voltage(regulator, target_uvolt, target_uvolt))
{
return rt_regulator_set_voltage(regulator, target_uvolt, target_uvolt);
}
return -RT_EINVAL;
}
rt_err_t sdio_regulator_set_vqmmc(struct rt_mmcsd_host *host,
struct rt_mmcsd_io_cfg *ios)
{
rt_err_t err;
int uvolt, min_uvolt, max_uvolt;
if (rt_is_err_or_null(host->supply.vqmmc))
{
return -RT_EINVAL;
}
switch (ios->signal_voltage)
{
case MMCSD_SIGNAL_VOLTAGE_120:
return regulator_set_voltage_if_supported(host->supply.vqmmc,
1100000, 1200000, 1300000);
case MMCSD_SIGNAL_VOLTAGE_180:
return regulator_set_voltage_if_supported(host->supply.vqmmc,
1700000, 1800000, 1950000);
case MMCSD_SIGNAL_VOLTAGE_330:
err = ocrbitnum_to_vdd(host->io_cfg.vdd, &uvolt, &max_uvolt);
if (err)
{
return err;
}
min_uvolt = rt_max(uvolt - 300000, 2700000);
max_uvolt = rt_min(max_uvolt + 200000, 3600000);
err = regulator_set_voltage_if_supported(host->supply.vqmmc,
min_uvolt, uvolt, max_uvolt);
if (err >= 0)
{
return err;
}
return regulator_set_voltage_if_supported(host->supply.vqmmc,
2700000, uvolt, 3600000);
default:
return -RT_EINVAL;
}
}
rt_err_t sdio_regulator_get_supply(struct rt_device *dev, struct rt_mmcsd_host *host)
{
rt_err_t err;
if (!dev || !host)
{
return -RT_EINVAL;
}
host->supply.vmmc = rt_regulator_get(dev, "vmmc");
host->supply.vqmmc = rt_regulator_get(dev, "vqmmc");
if (!rt_is_err(host->supply.vmmc))
{
if (!host->supply.vmmc)
{
LOG_D("%s: No %s regulator found", rt_dm_dev_get_name(dev), "vmmc");
}
}
else
{
err = rt_ptr_err(host->supply.vmmc);
goto _fail;
}
if (!rt_is_err(host->supply.vqmmc))
{
if (!host->supply.vqmmc)
{
LOG_D("%s: No %s regulator found", rt_dm_dev_get_name(dev), "vqmmc");
}
}
else
{
err = rt_ptr_err(host->supply.vqmmc);
goto _fail;
}
return RT_EOK;
_fail:
if (!rt_is_err_or_null(host->supply.vmmc))
{
rt_regulator_put(host->supply.vmmc);
host->supply.vmmc = RT_NULL;
}
if (!rt_is_err_or_null(host->supply.vqmmc))
{
rt_regulator_put(host->supply.vqmmc);
host->supply.vqmmc = RT_NULL;
}
return err;
}
rt_err_t sdio_regulator_enable_vqmmc(struct rt_mmcsd_host *host)
{
struct rt_mmcsd_supply *supply;
if (!host)
{
return -RT_EINVAL;
}
supply = &host->supply;
if (!rt_is_err_or_null(supply->vqmmc) && !supply->vqmmc_enabled)
{
rt_err_t err = rt_regulator_enable(supply->vqmmc);
if (err)
{
LOG_E("Enabling vqmmc regulator failed error = %s", rt_strerror(err));
}
else
{
supply->vqmmc_enabled = RT_TRUE;
}
}
return RT_EOK;
}
void sdio_regulator_disable_vqmmc(struct rt_mmcsd_host *host)
{
struct rt_mmcsd_supply *supply;
if (!host)
{
return;
}
supply = &host->supply;
if (!rt_is_err_or_null(supply->vqmmc) && supply->vqmmc_enabled)
{
rt_regulator_disable(supply->vqmmc);
supply->vqmmc_enabled = RT_FALSE;
}
}
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