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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2021-12-15 08:25:16 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-12-15 08:25:16 +0100 |
| commit | a2501c9e889abd22b47d42956d27b02607dbb0d8 (patch) | |
| tree | f30b5c829fe0adcc784c143aaf436abb6eb9724d /drivers/nvmem/bsec.c | |
| parent | abad1451586d8e8b36f86ef2772cef81d4ce2651 (diff) | |
| parent | 2962e19b55e970c7a2f1b0048abf1ef95463c6f5 (diff) | |
| download | barebox-a2501c9e889abd22b47d42956d27b02607dbb0d8.tar.gz barebox-a2501c9e889abd22b47d42956d27b02607dbb0d8.tar.xz | |
Merge branch 'for-next/misc'
Diffstat (limited to 'drivers/nvmem/bsec.c')
| -rw-r--r-- | drivers/nvmem/bsec.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/nvmem/bsec.c b/drivers/nvmem/bsec.c index a31eff7358..86b943a45d 100644 --- a/drivers/nvmem/bsec.c +++ b/drivers/nvmem/bsec.c @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2018, STMicroelectronics - All Rights Reserved * Copyright (c) 2019 Ahmad Fatoum, Pengutronix @@ -21,8 +21,10 @@ #define BSEC_OTP_SERIAL 13 struct bsec_priv { + struct device_d dev; u32 svc_id; struct regmap_config map_config; + int permanent_write_enable; }; struct stm32_bsec_data { @@ -59,13 +61,18 @@ static int stm32_bsec_read_shadow(void *ctx, unsigned reg, unsigned *val) return bsec_smc(ctx, BSEC_SMC_READ_SHADOW, reg, 0, val); } -static int stm32_bsec_reg_write_shadow(void *ctx, unsigned reg, unsigned val) +static int stm32_bsec_reg_write(void *ctx, unsigned reg, unsigned val) { - return bsec_smc(ctx, BSEC_SMC_WRITE_SHADOW, reg, val, NULL); + struct bsec_priv *priv = ctx; + + if (priv->permanent_write_enable) + return bsec_smc(ctx, BSEC_SMC_PROG_OTP, reg, val, NULL); + else + return bsec_smc(ctx, BSEC_SMC_WRITE_SHADOW, reg, val, NULL); } static struct regmap_bus stm32_bsec_regmap_bus = { - .reg_write = stm32_bsec_reg_write_shadow, + .reg_write = stm32_bsec_reg_write, .reg_read = stm32_bsec_read_shadow, }; @@ -150,6 +157,10 @@ static int stm32_bsec_probe(struct device_d *dev) priv->svc_id = data->svc_id; + dev_set_name(&priv->dev, "bsec"); + priv->dev.parent = dev; + register_device(&priv->dev); + priv->map_config.reg_bits = 32; priv->map_config.val_bits = 32; priv->map_config.reg_stride = 4; @@ -159,6 +170,11 @@ static int stm32_bsec_probe(struct device_d *dev) if (IS_ERR(map)) return PTR_ERR(map); + if (IS_ENABLED(CONFIG_STM32_BSEC_WRITE)) { + dev_add_param_bool(&priv->dev, "permanent_write_enable", + NULL, NULL, &priv->permanent_write_enable, NULL); + } + nvmem = nvmem_regmap_register(map, "stm32-bsec"); if (IS_ERR(nvmem)) return PTR_ERR(nvmem); |