u-boot/drivers/misc/stm32mp_fuse.c
Simon Glass 65e25bea59 dm: Rename DM_GET_DRIVER() to DM_DRIVER_GET()
In the spirit of using the same base name for all of these related macros,
rename this to have the operation at the end. This is not widely used so
the impact is fairly small.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-01-05 12:26:35 -07:00

197 lines
3.6 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018, STMicroelectronics - All Rights Reserved
*/
#include <common.h>
#include <command.h>
#include <fuse.h>
#include <misc.h>
#include <errno.h>
#include <dm/device.h>
#include <dm/uclass.h>
#include <power/stpmic1.h>
#define STM32MP_OTP_BANK 0
#define STM32MP_NVM_BANK 1
/*
* The 'fuse' command API
*/
int fuse_read(u32 bank, u32 word, u32 *val)
{
int ret;
struct udevice *dev;
switch (bank) {
case STM32MP_OTP_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stm32mp_bsec),
&dev);
if (ret)
return ret;
ret = misc_read(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET,
val, 4);
if (ret != 4)
ret = -EINVAL;
else
ret = 0;
break;
#ifdef CONFIG_PMIC_STPMIC1
case STM32MP_NVM_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stpmic1_nvm),
&dev);
if (ret)
return ret;
*val = 0;
ret = misc_read(dev, -word, val, 1);
if (ret != 1)
ret = -EINVAL;
else
ret = 0;
break;
#endif /* CONFIG_PMIC_STPMIC1 */
default:
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
ret = -EINVAL;
break;
}
return ret;
}
int fuse_prog(u32 bank, u32 word, u32 val)
{
struct udevice *dev;
int ret;
switch (bank) {
case STM32MP_OTP_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stm32mp_bsec),
&dev);
if (ret)
return ret;
ret = misc_write(dev, word * 4 + STM32_BSEC_OTP_OFFSET,
&val, 4);
if (ret != 4)
ret = -EINVAL;
else
ret = 0;
break;
#ifdef CONFIG_PMIC_STPMIC1
case STM32MP_NVM_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stpmic1_nvm),
&dev);
if (ret)
return ret;
ret = misc_write(dev, word, &val, 1);
if (ret != 1)
ret = -EINVAL;
else
ret = 0;
break;
#endif /* CONFIG_PMIC_STPMIC1 */
default:
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
ret = -EINVAL;
break;
}
return ret;
}
int fuse_sense(u32 bank, u32 word, u32 *val)
{
struct udevice *dev;
int ret;
switch (bank) {
case STM32MP_OTP_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stm32mp_bsec),
&dev);
if (ret)
return ret;
ret = misc_read(dev, word * 4 + STM32_BSEC_OTP_OFFSET, val, 4);
if (ret != 4)
ret = -EINVAL;
else
ret = 0;
break;
#ifdef CONFIG_PMIC_STPMIC1
case STM32MP_NVM_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stpmic1_nvm),
&dev);
if (ret)
return ret;
*val = 0;
ret = misc_read(dev, word, val, 1);
if (ret != 1)
ret = -EINVAL;
else
ret = 0;
break;
#endif /* CONFIG_PMIC_STPMIC1 */
default:
printf("stm32mp %s: wrong value for bank %i\n", __func__, bank);
ret = -EINVAL;
break;
}
return ret;
}
int fuse_override(u32 bank, u32 word, u32 val)
{
struct udevice *dev;
int ret;
switch (bank) {
case STM32MP_OTP_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stm32mp_bsec),
&dev);
if (ret)
return ret;
ret = misc_write(dev, word * 4 + STM32_BSEC_SHADOW_OFFSET,
&val, 4);
if (ret != 4)
ret = -EINVAL;
else
ret = 0;
break;
#ifdef CONFIG_PMIC_STPMIC1
case STM32MP_NVM_BANK:
ret = uclass_get_device_by_driver(UCLASS_MISC,
DM_DRIVER_GET(stpmic1_nvm),
&dev);
if (ret)
return ret;
ret = misc_write(dev, -word, &val, 1);
if (ret != 1)
ret = -EINVAL;
else
ret = 0;
break;
#endif /* CONFIG_PMIC_STPMIC1 */
default:
printf("stm32mp %s: wrong value for bank %i\n",
__func__, bank);
ret = -EINVAL;
break;
}
return ret;
}