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Tue, 10 Jun 2025 17:06:08 -0700 (PDT) From: Da Xue To: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , David Lechner , =?UTF-8?q?Nuno=20S=C3=A1?= , Andy Shevchenko , Mark Brown , Rui Miguel Silva , Viresh Kumar , Johan Hovold , Alex Elder , Greg Kroah-Hartman Cc: Da Xue , linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, greybus-dev@lists.linaro.org, linux-staging@lists.linux.dev Subject: [RFC] spi: expand bits_per_word_mask to 64 bits Date: Tue, 10 Jun 2025 20:05:15 -0400 Message-Id: <20250611000516.1383268-1-da@libre.computer> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Most current controller IP support 64-bit words. Update the mask to u64 from u32. Signed-off-by: Da Xue --- drivers/iio/adc/ad7949.c | 2 +- drivers/spi/spi-dln2.c | 2 +- drivers/spi/spi-ingenic.c | 2 +- drivers/spi/spi-sh-msiof.c | 2 +- drivers/spi/spi.c | 4 ++-- drivers/staging/greybus/spilib.c | 2 +- include/linux/spi/altera.h | 2 +- include/linux/spi/spi.h | 6 +++--- 8 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/iio/adc/ad7949.c b/drivers/iio/adc/ad7949.c index edd0c3a35ab7..469789ffa4a3 100644 --- a/drivers/iio/adc/ad7949.c +++ b/drivers/iio/adc/ad7949.c @@ -308,7 +308,7 @@ static void ad7949_disable_reg(void *reg) static int ad7949_spi_probe(struct spi_device *spi) { - u32 spi_ctrl_mask = spi->controller->bits_per_word_mask; + u64 spi_ctrl_mask = spi->controller->bits_per_word_mask; struct device *dev = &spi->dev; const struct ad7949_adc_spec *spec; struct ad7949_adc_chip *ad7949_adc; diff --git a/drivers/spi/spi-dln2.c b/drivers/spi/spi-dln2.c index 2013bc56ded8..cccbb00ad5ce 100644 --- a/drivers/spi/spi-dln2.c +++ b/drivers/spi/spi-dln2.c @@ -315,7 +315,7 @@ static int dln2_spi_set_bpw(struct dln2_spi *dln2, u8 bpw) } static int dln2_spi_get_supported_frame_sizes(struct dln2_spi *dln2, - u32 *bpw_mask) + u64 *bpw_mask) { int ret; struct { diff --git a/drivers/spi/spi-ingenic.c b/drivers/spi/spi-ingenic.c index 318b0768701e..21d453d6e46e 100644 --- a/drivers/spi/spi-ingenic.c +++ b/drivers/spi/spi-ingenic.c @@ -51,7 +51,7 @@ #define SPI_INGENIC_FIFO_SIZE 128u struct jz_soc_info { - u32 bits_per_word_mask; + u64 bits_per_word_mask; struct reg_field flen_field; bool has_trendian; diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 94a867967e02..97f5a6192279 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -33,7 +33,7 @@ #define SH_MSIOF_FLAG_FIXED_DTDL_200 BIT(0) struct sh_msiof_chipdata { - u32 bits_per_word_mask; + u64 bits_per_word_mask; u16 tx_fifo_size; u16 rx_fifo_size; u16 ctlr_flags; diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 1bc0fdbb1bd7..4f47201f2462 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3824,8 +3824,8 @@ static int __spi_validate_bits_per_word(struct spi_controller *ctlr, u8 bits_per_word) { if (ctlr->bits_per_word_mask) { - /* Only 32 bits fit in the mask */ - if (bits_per_word > 32) + /* Only 64 bits fit in the mask */ + if (bits_per_word > 64) return -EINVAL; if (!(ctlr->bits_per_word_mask & SPI_BPW_MASK(bits_per_word))) return -EINVAL; diff --git a/drivers/staging/greybus/spilib.c b/drivers/staging/greybus/spilib.c index 24e9c909fa02..087eed1879b1 100644 --- a/drivers/staging/greybus/spilib.c +++ b/drivers/staging/greybus/spilib.c @@ -27,7 +27,7 @@ struct gb_spilib { unsigned int op_timeout; u16 mode; u16 flags; - u32 bits_per_word_mask; + u64 bits_per_word_mask; u8 num_chipselect; u32 min_speed_hz; u32 max_speed_hz; diff --git a/include/linux/spi/altera.h b/include/linux/spi/altera.h index 3b74c3750caf..d6e036ed00e2 100644 --- a/include/linux/spi/altera.h +++ b/include/linux/spi/altera.h @@ -24,7 +24,7 @@ struct altera_spi_platform_data { u16 mode_bits; u16 num_chipselect; - u32 bits_per_word_mask; + u64 bits_per_word_mask; u16 num_devices; struct spi_board_info *devices; }; diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 4789f91dae94..f44120d5a63c 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -586,7 +586,7 @@ struct spi_controller { u32 buswidth_override_bits; /* Bitmask of supported bits_per_word for transfers */ - u32 bits_per_word_mask; + u64 bits_per_word_mask; #define SPI_BPW_MASK(bits) BIT((bits) - 1) #define SPI_BPW_RANGE_MASK(min, max) GENMASK((max) - 1, (min) - 1) @@ -1329,9 +1329,9 @@ spi_max_transfer_size(struct spi_device *spi) */ static inline bool spi_is_bpw_supported(struct spi_device *spi, u32 bpw) { - u32 bpw_mask = spi->controller->bits_per_word_mask; + u64 bpw_mask = spi->controller->bits_per_word_mask; - if (bpw == 8 || (bpw <= 32 && bpw_mask & SPI_BPW_MASK(bpw))) + if (bpw == 8 || (bpw <= 64 && bpw_mask & SPI_BPW_MASK(bpw))) return true; return false; -- 2.39.5