| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <amdblocks/lpc.h> |
| #include <amdblocks/spi.h> |
| #include <arch/mmio.h> |
| #include <assert.h> |
| #include <stdint.h> |
| |
| /* Global SPI controller mutex */ |
| struct thread_mutex spi_hw_mutex; |
| |
| static uintptr_t spi_base; |
| |
| void spi_set_base(void *base) |
| { |
| spi_base = (uintptr_t)base; |
| } |
| |
| uintptr_t spi_get_bar(void) |
| { |
| if (ENV_X86 && !spi_base) |
| spi_set_base((void *)lpc_get_spibase()); |
| ASSERT(spi_base); |
| |
| return spi_base; |
| } |
| |
| uint8_t spi_read8(uint8_t reg) |
| { |
| return read8((void *)(spi_get_bar() + reg)); |
| } |
| |
| uint16_t spi_read16(uint8_t reg) |
| { |
| return read16((void *)(spi_get_bar() + reg)); |
| } |
| |
| uint32_t spi_read32(uint8_t reg) |
| { |
| return read32((void *)(spi_get_bar() + reg)); |
| } |
| |
| void spi_write8(uint8_t reg, uint8_t val) |
| { |
| write8((void *)(spi_get_bar() + reg), val); |
| } |
| |
| void spi_write16(uint8_t reg, uint16_t val) |
| { |
| write16((void *)(spi_get_bar() + reg), val); |
| } |
| |
| void spi_write32(uint8_t reg, uint32_t val) |
| { |
| write32((void *)(spi_get_bar() + reg), val); |
| } |