diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/parade_lspcon.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/tests/parade_lspcon.c b/tests/parade_lspcon.c index 478e296d..a1c9f727 100644 --- a/tests/parade_lspcon.c +++ b/tests/parade_lspcon.c @@ -17,14 +17,100 @@ #if CONFIG_PARADE_LSPCON == 1 +/* Same macros as in parade_lspcon.c programmer. */ +/* FIXME(aklm): should driver register maps be defined in `include/drivers/` for sharing with tests? */ +#define REGISTER_ADDRESS 0x4a +#define SPISTATUS 0x9e +#define SPISTATUS_SECTOR_ERASE_FINISHED 0 +#define SWSPICTL 0x93 +#define SWSPICTL_ENABLE_READBACK 0x8 +#define SWSPI_RDATA 0x91 +/* Macros for test run. */ +#define DATA_TO_READ 0 +#define MAX_REG_BUF_LEN 2 + +struct parade_lspcon_io_state { + unsigned long addr; /* Address to read and write */ + uint8_t reg_buf[MAX_REG_BUF_LEN]; /* Last value written to the register address */ +}; + +static int parade_lspcon_ioctl(void *state, int fd, unsigned long request, va_list args) +{ + struct parade_lspcon_io_state *io_state = state; + if (request == I2C_SLAVE) + /* Addr is the next (and the only) argument in the parameters list for this ioctl call. */ + io_state->addr = va_arg(args, unsigned long); + + return 0; +} + +static int parade_lspcon_read(void *state, int fd, void *buf, size_t sz) +{ + struct parade_lspcon_io_state *io_state = state; + + /* + * Parade_lspcon programmer has operations over register address and + * page address. In the current emulation for basic lifecycle we need + * to emulate operations over register address. Page address can do + * nothing for now, and just return successful return value. + * + * For future, if this unit test is upgraded to run probing lifecycle, + * page address operations might need to be fully emulated. + */ + if (io_state->addr != REGISTER_ADDRESS) + return sz; + + assert_int_equal(sz, 1); + + switch (io_state->reg_buf[0]) { + case SPISTATUS: + memset(buf, SPISTATUS_SECTOR_ERASE_FINISHED, sz); + break; + case SWSPICTL: + memset(buf, SWSPICTL_ENABLE_READBACK, sz); + break; + case SWSPI_RDATA: + memset(buf, DATA_TO_READ, sz); + break; + default: + memset(buf, 0, sz); + break; + } + + return sz; +} + +static int parade_lspcon_write(void *state, int fd, const void *buf, size_t sz) +{ + struct parade_lspcon_io_state *io_state = state; + + /* + * Only register address operations are needed to be emulated for basic lifecycle. + * See also comment in `parade_lspcon_read`. + */ + if (io_state->addr != REGISTER_ADDRESS) + return sz; + + assert_true(sz <= MAX_REG_BUF_LEN); + + memcpy(io_state->reg_buf, buf, sz); + + return sz; +} + void parade_lspcon_basic_lifecycle_test_success(void **state) { + struct parade_lspcon_io_state parade_lspcon_io_state = { 0 }; struct io_mock_fallback_open_state parade_lspcon_fallback_open_state = { .noc = 0, .paths = { "/dev/i2c-254", NULL }, .flags = { O_RDWR }, }; const struct io_mock parade_lspcon_io = { + .state = ¶de_lspcon_io_state, + .ioctl = parade_lspcon_ioctl, + .read = parade_lspcon_read, + .write = parade_lspcon_write, .fallback_open_state = ¶de_lspcon_fallback_open_state, }; |