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diff --git a/sys/dev/spibus/spi.h b/sys/dev/spibus/spi.h
--- a/sys/dev/spibus/spi.h
+++ b/sys/dev/spibus/spi.h
@@ -34,9 +34,13 @@
uint32_t tx_data_sz;
void *rx_data;
uint32_t rx_data_sz;
+ uint32_t flags;
};
#define SPI_COMMAND_INITIALIZER { 0 }
+#define SPI_FLAG_KEEP_CS 0x1 /* Keep chip select asserted */
+#define SPI_FLAG_NO_SLEEP 0x2 /* Prevent driver from sleeping (use polling) */
+
#define SPI_CHIP_SELECT_HIGH 0x1 /* Chip select high (else low) */
#ifdef FDT
diff --git a/sys/dev/spibus/spibus.c b/sys/dev/spibus/spibus.c
--- a/sys/dev/spibus/spibus.c
+++ b/sys/dev/spibus/spibus.c
@@ -146,6 +146,9 @@
case SPIBUS_IVAR_CLOCK:
*(uint32_t *)result = devi->clock;
break;
+ case SPIBUS_IVAR_CS_DELAY:
+ *(uint32_t *)result = devi->cs_delay;
+ break;
}
return (0);
}
@@ -174,6 +177,9 @@
return (EINVAL);
devi->mode = (uint32_t)value;
break;
+ case SPIBUS_IVAR_CS_DELAY:
+ devi->cs_delay = (uint32_t)value;
+ break;
default:
return (EINVAL);
}
diff --git a/sys/dev/spibus/spibusvar.h b/sys/dev/spibus/spibusvar.h
--- a/sys/dev/spibus/spibusvar.h
+++ b/sys/dev/spibus/spibusvar.h
@@ -43,6 +43,7 @@
uint32_t cs;
uint32_t mode;
uint32_t clock;
+ uint32_t cs_delay;
struct resource_list rl;
};
@@ -52,6 +53,7 @@
SPIBUS_IVAR_CS, /* chip select that we're on */
SPIBUS_IVAR_MODE, /* SPI mode (0-3) */
SPIBUS_IVAR_CLOCK, /* maximum clock freq for device */
+ SPIBUS_IVAR_CS_DELAY, /* delay in microseconds after toggling chip select */
};
#define SPIBUS_ACCESSOR(A, B, T) \
@@ -71,6 +73,7 @@
SPIBUS_ACCESSOR(cs, CS, uint32_t)
SPIBUS_ACCESSOR(mode, MODE, uint32_t)
SPIBUS_ACCESSOR(clock, CLOCK, uint32_t)
+SPIBUS_ACCESSOR(cs_delay, CS_DELAY, uint32_t)
extern driver_t spibus_driver;
extern driver_t ofw_spibus_driver;

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