diff options
Diffstat (limited to 'drivers/net/dsa/microchip/ksz_spi.h')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz_spi.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/net/dsa/microchip/ksz_spi.h b/drivers/net/dsa/microchip/ksz_spi.h new file mode 100644 index 000000000000..427811bd60b3 --- /dev/null +++ b/drivers/net/dsa/microchip/ksz_spi.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 + * Microchip KSZ series SPI access common header + * + * Copyright (C) 2017-2018 Microchip Technology Inc. + * Tristram Ha <Tristram.Ha@microchip.com> + */ + +#ifndef __KSZ_SPI_H +#define __KSZ_SPI_H + +/* Chip dependent SPI access */ +static int ksz_spi_read(struct ksz_device *dev, u32 reg, u8 *data, + unsigned int len); +static int ksz_spi_write(struct ksz_device *dev, u32 reg, void *data, + unsigned int len); + +static int ksz_spi_read8(struct ksz_device *dev, u32 reg, u8 *val) +{ + return ksz_spi_read(dev, reg, val, 1); +} + +static int ksz_spi_read16(struct ksz_device *dev, u32 reg, u16 *val) +{ + int ret = ksz_spi_read(dev, reg, (u8 *)val, 2); + + if (!ret) + *val = be16_to_cpu(*val); + + return ret; +} + +static int ksz_spi_read32(struct ksz_device *dev, u32 reg, u32 *val) +{ + int ret = ksz_spi_read(dev, reg, (u8 *)val, 4); + + if (!ret) + *val = be32_to_cpu(*val); + + return ret; +} + +static int ksz_spi_write8(struct ksz_device *dev, u32 reg, u8 value) +{ + return ksz_spi_write(dev, reg, &value, 1); +} + +static int ksz_spi_write16(struct ksz_device *dev, u32 reg, u16 value) +{ + value = cpu_to_be16(value); + return ksz_spi_write(dev, reg, &value, 2); +} + +static int ksz_spi_write32(struct ksz_device *dev, u32 reg, u32 value) +{ + value = cpu_to_be32(value); + return ksz_spi_write(dev, reg, &value, 4); +} + +static int ksz_spi_get(struct ksz_device *dev, u32 reg, void *data, size_t len) +{ + return ksz_spi_read(dev, reg, data, len); +} + +static int ksz_spi_set(struct ksz_device *dev, u32 reg, void *data, size_t len) +{ + return ksz_spi_write(dev, reg, data, len); +} + +#endif |