diff options
author | Clement Leger <cleger@kalray.eu> | 2020-04-16 13:09:16 +0200 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2020-04-16 15:28:33 +0200 |
commit | 33e8fd4bfbd7eb0921eb55caceed54e51912a4e6 (patch) | |
tree | 030d52808c88e925042283698136cffaa6256fc4 /drivers/spi/spi-dw.c | |
parent | spi: dw: remove unused dw_spi_chip handling (diff) | |
download | linux-33e8fd4bfbd7eb0921eb55caceed54e51912a4e6.tar.xz linux-33e8fd4bfbd7eb0921eb55caceed54e51912a4e6.zip |
spi: dw: remove cs_control and poll_mode members from chip_data
Since these members were initialized only with previous dw_spi_chip
struct members and that there is no user anymore, remove them. Along
this removal, remove code path which were using these members.
Signed-off-by: Clement Leger <cleger@kalray.eu>
Link: https://lore.kernel.org/r/20200416110916.22633-2-cleger@kalray.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw.c')
-rw-r--r-- | drivers/spi/spi-dw.c | 41 |
1 files changed, 1 insertions, 40 deletions
diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index fda8d433a769..2b79c5a983c0 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -24,11 +24,8 @@ struct chip_data { u8 tmode; /* TR/TO/RO/EEPROM */ u8 type; /* SPI/SSP/MicroWire */ - u8 poll_mode; /* 1 means use poll mode */ - u16 clk_div; /* baud rate divider */ u32 speed_hz; /* baud rate */ - void (*cs_control)(u32 command); }; #ifdef CONFIG_DEBUG_FS @@ -127,11 +124,6 @@ static inline void dw_spi_debugfs_remove(struct dw_spi *dws) void dw_spi_set_cs(struct spi_device *spi, bool enable) { struct dw_spi *dws = spi_controller_get_devdata(spi->controller); - struct chip_data *chip = spi_get_ctldata(spi); - - /* Chip select logic is inverted from spi_set_cs() */ - if (chip && chip->cs_control) - chip->cs_control(!enable); if (!enable) dw_writel(dws, DW_SPI_SER, BIT(spi->chip_select)); @@ -265,18 +257,6 @@ static irqreturn_t dw_spi_irq(int irq, void *dev_id) return dws->transfer_handler(dws); } -/* Must be called inside pump_transfers() */ -static int poll_transfer(struct dw_spi *dws) -{ - do { - dw_writer(dws); - dw_reader(dws); - cpu_relax(); - } while (dws->rx_end > dws->rx); - - return 0; -} - static int dw_spi_transfer_one(struct spi_controller *master, struct spi_device *spi, struct spi_transfer *transfer) { @@ -324,22 +304,6 @@ static int dw_spi_transfer_one(struct spi_controller *master, (((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET)) | (chip->tmode << SPI_TMOD_OFFSET); - /* - * Adjust transfer mode if necessary. Requires platform dependent - * chipselect mechanism. - */ - if (chip->cs_control) { - if (dws->rx && dws->tx) - chip->tmode = SPI_TMOD_TR; - else if (dws->rx) - chip->tmode = SPI_TMOD_RO; - else - chip->tmode = SPI_TMOD_TO; - - cr0 &= ~SPI_TMOD_MASK; - cr0 |= (chip->tmode << SPI_TMOD_OFFSET); - } - dw_writel(dws, DW_SPI_CTRL0, cr0); /* Check if current transfer is a DMA transaction */ @@ -359,7 +323,7 @@ static int dw_spi_transfer_one(struct spi_controller *master, spi_enable_chip(dws, 1); return ret; } - } else if (!chip->poll_mode) { + } else { txlevel = min_t(u16, dws->fifo_len / 2, dws->len / dws->n_bytes); dw_writel(dws, DW_SPI_TXFLTR, txlevel); @@ -379,9 +343,6 @@ static int dw_spi_transfer_one(struct spi_controller *master, return ret; } - if (chip->poll_mode) - return poll_transfer(dws); - return 1; } |