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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/nfc/s3fwrn5/phy_common.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/nfc/s3fwrn5/phy_common.c')
-rw-r--r-- | drivers/nfc/s3fwrn5/phy_common.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/nfc/s3fwrn5/phy_common.c b/drivers/nfc/s3fwrn5/phy_common.c new file mode 100644 index 000000000..81318478d --- /dev/null +++ b/drivers/nfc/s3fwrn5/phy_common.c @@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Link Layer for Samsung S3FWRN5 NCI based Driver + * + * Copyright (C) 2015 Samsung Electrnoics + * Robert Baldyga <r.baldyga@samsung.com> + * Copyright (C) 2020 Samsung Electrnoics + * Bongsu Jeon <bongsu.jeon@samsung.com> + */ + +#include <linux/gpio.h> +#include <linux/delay.h> +#include <linux/module.h> + +#include "phy_common.h" + +void s3fwrn5_phy_set_wake(void *phy_id, bool wake) +{ + struct phy_common *phy = phy_id; + + mutex_lock(&phy->mutex); + gpio_set_value(phy->gpio_fw_wake, wake); + if (wake) + msleep(S3FWRN5_EN_WAIT_TIME); + mutex_unlock(&phy->mutex); +} +EXPORT_SYMBOL(s3fwrn5_phy_set_wake); + +bool s3fwrn5_phy_power_ctrl(struct phy_common *phy, enum s3fwrn5_mode mode) +{ + if (phy->mode == mode) + return false; + + phy->mode = mode; + + gpio_set_value(phy->gpio_en, 1); + gpio_set_value(phy->gpio_fw_wake, 0); + if (mode == S3FWRN5_MODE_FW) + gpio_set_value(phy->gpio_fw_wake, 1); + + if (mode != S3FWRN5_MODE_COLD) { + msleep(S3FWRN5_EN_WAIT_TIME); + gpio_set_value(phy->gpio_en, 0); + msleep(S3FWRN5_EN_WAIT_TIME); + } + + return true; +} +EXPORT_SYMBOL(s3fwrn5_phy_power_ctrl); + +void s3fwrn5_phy_set_mode(void *phy_id, enum s3fwrn5_mode mode) +{ + struct phy_common *phy = phy_id; + + mutex_lock(&phy->mutex); + + s3fwrn5_phy_power_ctrl(phy, mode); + + mutex_unlock(&phy->mutex); +} +EXPORT_SYMBOL(s3fwrn5_phy_set_mode); + +enum s3fwrn5_mode s3fwrn5_phy_get_mode(void *phy_id) +{ + struct phy_common *phy = phy_id; + enum s3fwrn5_mode mode; + + mutex_lock(&phy->mutex); + + mode = phy->mode; + + mutex_unlock(&phy->mutex); + + return mode; +} +EXPORT_SYMBOL(s3fwrn5_phy_get_mode); |