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spi: img-spfi: Reset controller after each message

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Imagination has recommended that the SPFI controller be reset after
each message, regardless of success or failure.  Do this in an
unprepare_message() callback.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andrew Bresticker 2015-04-08 10:03:15 -07:00 committed by Mark Brown
parent 824ab37df0
commit ba33d8ac0c
1 changed files with 11 additions and 2 deletions
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13
drivers/spi/spi-img-spfi.c
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@ -414,8 +414,6 @@ static void img_spfi_handle_err(struct spi_master *master,
dmaengine_terminate_all(spfi->rx_ch);
}
spin_unlock_irqrestore(&spfi->lock, flags);
spfi_reset(spfi);
}
static int img_spfi_prepare(struct spi_master *master, struct spi_message *msg)
@ -437,6 +435,16 @@ static int img_spfi_prepare(struct spi_master *master, struct spi_message *msg)
return 0;
}
static int img_spfi_unprepare(struct spi_master *master,
struct spi_message *msg)
{
struct img_spfi *spfi = spi_master_get_devdata(master);
spfi_reset(spfi);
return 0;
}
static void img_spfi_config(struct spi_master *master, struct spi_device *spi,
struct spi_transfer *xfer)
{
@ -610,6 +618,7 @@ static int img_spfi_probe(struct platform_device *pdev)
master->set_cs = img_spfi_set_cs;
master->transfer_one = img_spfi_transfer_one;
master->prepare_message = img_spfi_prepare;
master->unprepare_message = img_spfi_unprepare;
master->handle_err = img_spfi_handle_err;
spfi->tx_ch = dma_request_slave_channel(spfi->dev, "tx");