From 5f684c34fc82be84ece158aa5c5c7c5072daa9a0 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 2 Jun 2014 15:38:03 +0200 Subject: spi: rspi: Extract rspi_wait_for_{tx_empty,rx_full}() Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown --- drivers/spi/spi-rspi.c | 29 +++++++++++++++++++++-------- 1 file changed, 21 insertions(+), 8 deletions(-) (limited to 'drivers/spi') diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 5639f9529e0b..d04a4acce231 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -405,11 +405,22 @@ static int rspi_wait_for_interrupt(struct rspi_data *rspi, u8 wait_mask, return 0; } +static inline int rspi_wait_for_tx_empty(struct rspi_data *rspi) +{ + return rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); +} + +static inline int rspi_wait_for_rx_full(struct rspi_data *rspi) +{ + return rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE); +} + static int rspi_data_out(struct rspi_data *rspi, u8 data) { - if (rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE) < 0) { + int error = rspi_wait_for_tx_empty(rspi); + if (error < 0) { dev_err(&rspi->master->dev, "transmit timeout\n"); - return -ETIMEDOUT; + return error; } rspi_write_data(rspi, data); return 0; @@ -417,11 +428,13 @@ static int rspi_data_out(struct rspi_data *rspi, u8 data) static int rspi_data_in(struct rspi_data *rspi) { + int error; u8 data; - if (rspi_wait_for_interrupt(rspi, SPSR_SPRF, SPCR_SPRIE) < 0) { + error = rspi_wait_for_rx_full(rspi); + if (error < 0) { dev_err(&rspi->master->dev, "receive timeout\n"); - return -ETIMEDOUT; + return error; } data = rspi_read_data(rspi); return data; @@ -737,7 +750,7 @@ static int rspi_transfer_out_in(struct rspi_data *rspi, } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } @@ -783,7 +796,7 @@ static int rspi_rz_transfer_out_in(struct rspi_data *rspi, } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } @@ -818,7 +831,7 @@ static int qspi_transfer_out_in(struct rspi_data *rspi, } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } @@ -836,7 +849,7 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer) } /* Wait for the last transmission */ - rspi_wait_for_interrupt(rspi, SPSR_SPTEF, SPCR_SPTIE); + rspi_wait_for_tx_empty(rspi); return 0; } -- cgit v1.2.3