| Message ID | 20240612-spi_lbc-v1-1-d52e8c8011bd@amlogic.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | spi: meson-spicc: add spicc loopback mode | expand |
On 12/06/2024 11:44, Xianwei Zhao via B4 Relay wrote: > From: Xianwei Zhao <xianwei.zhao@amlogic.com> > > Add spicc loopback mode for debugging convenience. > > Signed-off-by: Sunny Luo <sunny.luo@amlogic.com> > Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com> > --- > drivers/spi/spi-meson-spicc.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > diff --git a/drivers/spi/spi-meson-spicc.c b/drivers/spi/spi-meson-spicc.c > index 8a4a8ba9dfed..8838a98b04c2 100644 > --- a/drivers/spi/spi-meson-spicc.c > +++ b/drivers/spi/spi-meson-spicc.c > @@ -514,7 +514,9 @@ static int meson_spicc_prepare_message(struct spi_controller *host, > /* Setup no wait cycles by default */ > writel_relaxed(0, spicc->base + SPICC_PERIODREG); > > - writel_bits_relaxed(SPICC_LBC_W1, 0, spicc->base + SPICC_TESTREG); > + writel_bits_relaxed(SPICC_LBC_W1, > + spi->mode & SPI_LOOP ? SPICC_LBC_W1 : 0, > + spicc->base + SPICC_TESTREG); > > return 0; > } > @@ -850,7 +852,7 @@ static int meson_spicc_probe(struct platform_device *pdev) > > host->num_chipselect = 4; > host->dev.of_node = pdev->dev.of_node; > - host->mode_bits = SPI_CPHA | SPI_CPOL | SPI_CS_HIGH; > + host->mode_bits = SPI_CPHA | SPI_CPOL | SPI_CS_HIGH | SPI_LOOP; > host->bits_per_word_mask = SPI_BPW_MASK(32) | > SPI_BPW_MASK(24) | > SPI_BPW_MASK(16) | > > --- > base-commit: ec0d19f2b59699e2e148091debaa0d9d6af5800a > change-id: 20240611-spi_lbc-0859cebc580e > > Best regards, Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
On Wed, 12 Jun 2024 17:44:50 +0800, Xianwei Zhao wrote: > Add spicc loopback mode for debugging convenience. > > Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next Thanks! [1/1] spi: meson-spicc: add spicc loopback mode commit: 313d2c9d1252185721cad4f8c57099840d6c9958 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
diff --git a/drivers/spi/spi-meson-spicc.c b/drivers/spi/spi-meson-spicc.c index 8a4a8ba9dfed..8838a98b04c2 100644 --- a/drivers/spi/spi-meson-spicc.c +++ b/drivers/spi/spi-meson-spicc.c @@ -514,7 +514,9 @@ static int meson_spicc_prepare_message(struct spi_controller *host, /* Setup no wait cycles by default */ writel_relaxed(0, spicc->base + SPICC_PERIODREG); - writel_bits_relaxed(SPICC_LBC_W1, 0, spicc->base + SPICC_TESTREG); + writel_bits_relaxed(SPICC_LBC_W1, + spi->mode & SPI_LOOP ? SPICC_LBC_W1 : 0, + spicc->base + SPICC_TESTREG); return 0; } @@ -850,7 +852,7 @@ static int meson_spicc_probe(struct platform_device *pdev) host->num_chipselect = 4; host->dev.of_node = pdev->dev.of_node; - host->mode_bits = SPI_CPHA | SPI_CPOL | SPI_CS_HIGH; + host->mode_bits = SPI_CPHA | SPI_CPOL | SPI_CS_HIGH | SPI_LOOP; host->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(24) | SPI_BPW_MASK(16) |