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Beam Positoning Monitor - Software
Commit 02315394 authored by Lucas Russo's avatar Lucas Russo
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sm_io/protocols/*/*spi.c: add user-customizable bidir parameter 

With this, we can specify if we want to use a
bidirectional (three-mode) SPI or the regular one.

This, of course, relies on hardware support.
parent a241f26a
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Showing with 5 additions and 1 deletion
include/sm_pr_spi.h
View file @ 02315394
......@@ -17,6 +17,7 @@ typedef struct {
uint32_t sys_freq; /* System clock [Hz] */
uint32_t spi_freq; /* SPI clock [Hz] */
uint32_t init_config; /* SPI initial config register */
bool bidir; /* SPI bidirectional control enable */
} spi_proto_args_t;
typedef enum {
......
src/sm_io/protocols/ops/sm_pr_spi.c
View file @ 02315394
......@@ -50,6 +50,7 @@ typedef struct {
uint32_t sys_freq; /* System clock [Hz] */
uint32_t spi_freq; /* SPI clock [Hz] */
uint32_t init_config; /* SPI initial config register */
bool bidir; /* SPI bidirectional control enable */
} smpr_proto_spi_t;
static smpr_err_e _spi_init (smpr_t *self);
......@@ -106,6 +107,7 @@ int spi_open (smpr_t *self, uint64_t base, void *args)
spi_proto->sys_freq = spi_proto_args->sys_freq;
spi_proto->spi_freq = spi_proto_args->spi_freq;
spi_proto->init_config = spi_proto_args->init_config;
spi_proto->bidir = spi_proto_args->bidir;
}
else {
DBE_DEBUG (DBG_SM_PR | DBG_LVL_INFO,
......@@ -113,6 +115,7 @@ int spi_open (smpr_t *self, uint64_t base, void *args)
spi_proto->sys_freq = SM_PR_SPI_DFLT_SYS_FREQ;
spi_proto->spi_freq = SM_PR_SPI_DFLT_SPI_FREQ;
spi_proto->init_config = SM_PR_SPI_DFLT_SPI_CONFIG;
spi_proto->bidir = SM_PR_SPI_DFLT_BIDIR;
}
DBE_DEBUG (DBG_SM_PR | DBG_LVL_INFO,
......@@ -292,7 +295,7 @@ static smpr_err_e _spi_init (smpr_t *self)
err_exit, SMPR_ERR_RW_SMIO);
#endif
uint32_t bidir = SM_PR_SPI_DFLT_BIDIR;
uint32_t bidir = spi_proto->bidir;
/* Configure BIDIR register */
DBE_DEBUG (DBG_SM_PR | DBG_LVL_TRACE,
"[sm_pr:spi] SPI bidir register = 0x%08X\n", bidir);
......
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