diff options
Diffstat (limited to 'src/cpu/samsung')
| -rw-r--r-- | src/cpu/samsung/exynos5420/spi.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/src/cpu/samsung/exynos5420/spi.c b/src/cpu/samsung/exynos5420/spi.c index e3029b83db..82c37650da 100644 --- a/src/cpu/samsung/exynos5420/spi.c +++ b/src/cpu/samsung/exynos5420/spi.c @@ -41,6 +41,32 @@ struct exynos_spi_slave { uint8_t frame_header; /* header byte to detect in half-duplex mode. */ }; +/* TODO(hungte) Move the SPI param list to per-board configuration, probably + * Kconfig or mainboard.c */ +static struct exynos_spi_slave exynos_spi_slaves[3] = { + // SPI 0 + { + .slave = { .bus = 0, }, + .regs = samsung_get_base_spi0(), + }, + // SPI 1 + { + .slave = { .bus = 1, .rw = SPI_READ_FLAG, }, + .regs = samsung_get_base_spi1(), + .fifo_size = 64, + .half_duplex = 0, + }, + // SPI 2 + { + .slave = { .bus = 2, + .rw = SPI_READ_FLAG | SPI_WRITE_FLAG, }, + .regs = samsung_get_base_spi2(), + .fifo_size = 64, + .half_duplex = 1, + .frame_header = 0xec, + }, +}; + static inline struct exynos_spi_slave *to_exynos_spi(struct spi_slave *slave) { return container_of(slave, struct exynos_spi_slave, slave); @@ -54,14 +80,13 @@ void spi_init(void) struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, unsigned int max_hz, unsigned int mode) { - // TODO(hungte) Provide Exynos SPI device setup. - return NULL; + ASSERT(bus >= 0 && bus < 3); + return &(exynos_spi_slaves[bus].slave); } int spi_cs_is_valid(unsigned int bus, unsigned int cs) { - // TODO(hungte) Detect and check if BUS/CS is valid. - return 0; + return bus > 0 && bus < 3; } void spi_cs_activate(struct spi_slave *slave) |