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authorGeert Uytterhoeven <geert+renesas@glider.be>2019-02-28 12:05:13 +0100
committerMark Brown <broonie@kernel.org>2019-03-04 00:02:28 +0000
commit0e836c3bea7da04cd4e2ed22d8c20654d5a09273 (patch)
tree3df4c9edc1e22522291c871d4508ad4c54344e20 /drivers/spi/spi-sh-msiof.c
parentdaad4d2a0a60b0b2879e66194100b43c41e96ca9 (diff)
downloadlinux-0e836c3bea7da04cd4e2ed22d8c20654d5a09273.tar.bz2
spi: sh-msiof: Restrict bits per word to 8/16/24/32 on R-Car Gen2/3
While the MSIOF variants in older SuperH and SH/R-Mobile SoCs support bits-per-word values in the full range 8..32, the variants present in R-Car Gen2 and Gen3 SoCs are restricted to 8, 16, 24, or 32. Obtain the value from family-specific sh_msiof_chipdata to fix this. Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-sh-msiof.c')
-rw-r--r--drivers/spi/spi-sh-msiof.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index b20e70a2bdd1..e2eb466db10a 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -32,6 +32,7 @@
#include <asm/unaligned.h>
struct sh_msiof_chipdata {
+ u32 bits_per_word_mask;
u16 tx_fifo_size;
u16 rx_fifo_size;
u16 ctlr_flags;
@@ -1048,6 +1049,7 @@ static int sh_msiof_transfer_one(struct spi_controller *ctlr,
}
static const struct sh_msiof_chipdata sh_data = {
+ .bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = 0,
@@ -1055,6 +1057,8 @@ static const struct sh_msiof_chipdata sh_data = {
};
static const struct sh_msiof_chipdata rcar_gen2_data = {
+ .bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
+ SPI_BPW_MASK(24) | SPI_BPW_MASK(32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = SPI_CONTROLLER_MUST_TX,
@@ -1062,6 +1066,8 @@ static const struct sh_msiof_chipdata rcar_gen2_data = {
};
static const struct sh_msiof_chipdata rcar_gen3_data = {
+ .bits_per_word_mask = SPI_BPW_MASK(8) | SPI_BPW_MASK(16) |
+ SPI_BPW_MASK(24) | SPI_BPW_MASK(32),
.tx_fifo_size = 64,
.rx_fifo_size = 64,
.ctlr_flags = SPI_CONTROLLER_MUST_TX,
@@ -1386,7 +1392,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev)
ctlr->setup = sh_msiof_spi_setup;
ctlr->prepare_message = sh_msiof_prepare_message;
ctlr->slave_abort = sh_msiof_slave_abort;
- ctlr->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32);
+ ctlr->bits_per_word_mask = chipdata->bits_per_word_mask;
ctlr->auto_runtime_pm = true;
ctlr->transfer_one = sh_msiof_transfer_one;