spi: Use void pointers for data in simple SPI I/O operations
Currently the simple SPI I/O operations all take pointers to u8 * buffers to operate on. This creates needless type compatibility issues and the underlying spi_transfer structure uses void pointers anyway so convert the API over to take void pointers too. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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@ -1047,8 +1047,8 @@ static u8 *buf;
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* spi_{async,sync}() calls with dma-safe buffers.
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* spi_{async,sync}() calls with dma-safe buffers.
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*/
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*/
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int spi_write_then_read(struct spi_device *spi,
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int spi_write_then_read(struct spi_device *spi,
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const u8 *txbuf, unsigned n_tx,
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const void *txbuf, unsigned n_tx,
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u8 *rxbuf, unsigned n_rx)
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void *rxbuf, unsigned n_rx)
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{
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{
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static DEFINE_MUTEX(lock);
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static DEFINE_MUTEX(lock);
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@ -581,7 +581,7 @@ extern int spi_bus_unlock(struct spi_master *master);
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* Callable only from contexts that can sleep.
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* Callable only from contexts that can sleep.
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*/
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*/
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static inline int
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static inline int
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spi_write(struct spi_device *spi, const u8 *buf, size_t len)
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spi_write(struct spi_device *spi, const void *buf, size_t len)
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{
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{
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struct spi_transfer t = {
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struct spi_transfer t = {
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.tx_buf = buf,
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.tx_buf = buf,
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@ -605,7 +605,7 @@ spi_write(struct spi_device *spi, const u8 *buf, size_t len)
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* Callable only from contexts that can sleep.
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* Callable only from contexts that can sleep.
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*/
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*/
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static inline int
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static inline int
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spi_read(struct spi_device *spi, u8 *buf, size_t len)
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spi_read(struct spi_device *spi, void *buf, size_t len)
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{
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{
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struct spi_transfer t = {
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struct spi_transfer t = {
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.rx_buf = buf,
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.rx_buf = buf,
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@ -620,8 +620,8 @@ spi_read(struct spi_device *spi, u8 *buf, size_t len)
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/* this copies txbuf and rxbuf data; for small transfers only! */
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/* this copies txbuf and rxbuf data; for small transfers only! */
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extern int spi_write_then_read(struct spi_device *spi,
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extern int spi_write_then_read(struct spi_device *spi,
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const u8 *txbuf, unsigned n_tx,
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const void *txbuf, unsigned n_tx,
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u8 *rxbuf, unsigned n_rx);
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void *rxbuf, unsigned n_rx);
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/**
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/**
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* spi_w8r8 - SPI synchronous 8 bit write followed by 8 bit read
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* spi_w8r8 - SPI synchronous 8 bit write followed by 8 bit read
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