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SAMV7: SPI Slave fixes

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This commit is contained in:
Stefan Kolb 2015-09-29 09:13:36 -06:00 committed by Gregory Nutt
parent 2a6c71e850
commit 51fb4d3252
1 changed files with 19 additions and 11 deletions
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30
arch/arm/src/samv7/sam_spi_slave.c
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@ -41,6 +41,7 @@
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <semaphore.h>
#include <errno.h>
#include <assert.h>
@ -1149,23 +1150,30 @@ struct spi_sctrlr_s *sam_spi_slave_initialize(int port)
DEBUGASSERT(spino == 1);
#endif
/* Allocate a new state structure for this chip select. NOTE that there
* is no protection if the same chip select is used in two different
* chip select structures.
*/
priv = (struct sam_spidev_s *)zalloc(sizeof(struct sam_spidev_s));
if (!priv)
#if defined(CONFIG_SAMV7_SPI0_SLAVE) && defined(CONFIG_SAMV7_SPI1_SLAVE)
if (spino == 0)
{
spidbg("ERROR: Failed to allocate a chip select structure\n");
return NULL;
priv = &g_spi0_sctrlr;
}
else
{
priv = &g_spi1_sctrlr;
}
#elif defined(CONFIG_SAMV7_SPI0_SLAVE)
priv = &g_spi0_sctrlr;
#elif defined(CONFIG_SAMV7_SPI1_SLAVE)
priv = &g_spi1_sctrlr;
#endif
/* Set up the initial state for this chip select structure. Other fields
* were zeroed by zalloc().
* are zeroed.
*/
/* Initialize the SPI operations */
memset(priv, 0, sizeof(struct sam_spidev_s));
/* Initialize the SPI operations */
priv->sctrlr.ops = &g_sctrlr_ops;