* [PATCH 0/2] spi: rspi: Add support for configuring word order @ 2020-02-18 10:58 Geert Uytterhoeven [not found] ` <20200218105810.902-1-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> 2020-02-18 10:58 ` [PATCH 2/2] spi: rspi: Add support for LSB-first word order Geert Uytterhoeven 0 siblings, 2 replies; 5+ messages in thread From: Geert Uytterhoeven @ 2020-02-18 10:58 UTC (permalink / raw) To: Mark Brown Cc: Hoan Nguyen An, linux-spi-u79uwXL29TY76Z2rM5mHXA, linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA, Geert Uytterhoeven Hi Mark, This patch series adds support for configuring the word order on Renesas "RSPI" SPI controllers. This has been tested on RSK+RZA1 using spidev_test (with/without -L option). Thanks! Geert Uytterhoeven (2): spi: rspi: Factor out handling of common mode bits spi: rspi: Add support for LSB-first word order drivers/spi/spi-rspi.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) -- 2.17.1 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <20200218105810.902-1-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org>]
* [PATCH 1/2] spi: rspi: Factor out handling of common mode bits [not found] ` <20200218105810.902-1-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> @ 2020-02-18 10:58 ` Geert Uytterhoeven 2020-02-19 0:11 ` Applied "spi: rspi: Factor out handling of common mode bits" to the spi tree Mark Brown 0 siblings, 1 reply; 5+ messages in thread From: Geert Uytterhoeven @ 2020-02-18 10:58 UTC (permalink / raw) To: Mark Brown Cc: Hoan Nguyen An, linux-spi-u79uwXL29TY76Z2rM5mHXA, linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA, Geert Uytterhoeven Basic SPI features like clock phase/polarity and loopback mode are common to all RSPI variants. Factor them out to reduce duplication. Signed-off-by: Geert Uytterhoeven <geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> --- drivers/spi/spi-rspi.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 85575d45901cee1b..7a1e6d524f34a416 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -239,7 +239,7 @@ struct spi_ops { int (*set_config_register)(struct rspi_data *rspi, int access_size); int (*transfer_one)(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer); - u16 mode_bits; + u16 extra_mode_bits; u16 flags; u16 fifo_size; u8 num_hw_ss; @@ -1122,7 +1122,6 @@ static int rspi_remove(struct platform_device *pdev) static const struct spi_ops rspi_ops = { .set_config_register = rspi_set_config_register, .transfer_one = rspi_transfer_one, - .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP, .flags = SPI_CONTROLLER_MUST_TX, .fifo_size = 8, .num_hw_ss = 2, @@ -1131,7 +1130,6 @@ static const struct spi_ops rspi_ops = { static const struct spi_ops rspi_rz_ops = { .set_config_register = rspi_rz_set_config_register, .transfer_one = rspi_rz_transfer_one, - .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP, .flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX, .fifo_size = 8, /* 8 for TX, 32 for RX */ .num_hw_ss = 1, @@ -1140,8 +1138,7 @@ static const struct spi_ops rspi_rz_ops = { static const struct spi_ops qspi_ops = { .set_config_register = qspi_set_config_register, .transfer_one = qspi_transfer_one, - .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | - SPI_TX_DUAL | SPI_TX_QUAD | + .extra_mode_bits = SPI_TX_DUAL | SPI_TX_QUAD | SPI_RX_DUAL | SPI_RX_QUAD, .flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX, .fifo_size = 32, @@ -1258,7 +1255,7 @@ static int rspi_probe(struct platform_device *pdev) ctlr->transfer_one = ops->transfer_one; ctlr->prepare_message = rspi_prepare_message; ctlr->unprepare_message = rspi_unprepare_message; - ctlr->mode_bits = ops->mode_bits; + ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | ops->extra_mode_bits; ctlr->flags = ops->flags; ctlr->dev.of_node = pdev->dev.of_node; ctlr->use_gpio_descriptors = true; -- 2.17.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Applied "spi: rspi: Factor out handling of common mode bits" to the spi tree 2020-02-18 10:58 ` [PATCH 1/2] spi: rspi: Factor out handling of common mode bits Geert Uytterhoeven @ 2020-02-19 0:11 ` Mark Brown 0 siblings, 0 replies; 5+ messages in thread From: Mark Brown @ 2020-02-19 0:11 UTC (permalink / raw) To: Geert Uytterhoeven Cc: Hoan Nguyen An, linux-renesas-soc, linux-spi, Mark Brown The patch spi: rspi: Factor out handling of common mode bits has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git 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 >From cd982e6c44a7265e1c7e92de4f696c3b3b376e93 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven <geert+renesas@glider.be> Date: Tue, 18 Feb 2020 11:58:08 +0100 Subject: [PATCH] spi: rspi: Factor out handling of common mode bits Basic SPI features like clock phase/polarity and loopback mode are common to all RSPI variants. Factor them out to reduce duplication. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20200218105810.902-2-geert+renesas@glider.be Signed-off-by: Mark Brown <broonie@kernel.org> --- drivers/spi/spi-rspi.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 85575d45901c..7a1e6d524f34 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -239,7 +239,7 @@ struct spi_ops { int (*set_config_register)(struct rspi_data *rspi, int access_size); int (*transfer_one)(struct spi_controller *ctlr, struct spi_device *spi, struct spi_transfer *xfer); - u16 mode_bits; + u16 extra_mode_bits; u16 flags; u16 fifo_size; u8 num_hw_ss; @@ -1122,7 +1122,6 @@ static int rspi_remove(struct platform_device *pdev) static const struct spi_ops rspi_ops = { .set_config_register = rspi_set_config_register, .transfer_one = rspi_transfer_one, - .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP, .flags = SPI_CONTROLLER_MUST_TX, .fifo_size = 8, .num_hw_ss = 2, @@ -1131,7 +1130,6 @@ static const struct spi_ops rspi_ops = { static const struct spi_ops rspi_rz_ops = { .set_config_register = rspi_rz_set_config_register, .transfer_one = rspi_rz_transfer_one, - .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP, .flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX, .fifo_size = 8, /* 8 for TX, 32 for RX */ .num_hw_ss = 1, @@ -1140,8 +1138,7 @@ static const struct spi_ops rspi_rz_ops = { static const struct spi_ops qspi_ops = { .set_config_register = qspi_set_config_register, .transfer_one = qspi_transfer_one, - .mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | - SPI_TX_DUAL | SPI_TX_QUAD | + .extra_mode_bits = SPI_TX_DUAL | SPI_TX_QUAD | SPI_RX_DUAL | SPI_RX_QUAD, .flags = SPI_CONTROLLER_MUST_RX | SPI_CONTROLLER_MUST_TX, .fifo_size = 32, @@ -1258,7 +1255,7 @@ static int rspi_probe(struct platform_device *pdev) ctlr->transfer_one = ops->transfer_one; ctlr->prepare_message = rspi_prepare_message; ctlr->unprepare_message = rspi_unprepare_message; - ctlr->mode_bits = ops->mode_bits; + ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | ops->extra_mode_bits; ctlr->flags = ops->flags; ctlr->dev.of_node = pdev->dev.of_node; ctlr->use_gpio_descriptors = true; -- 2.20.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH 2/2] spi: rspi: Add support for LSB-first word order 2020-02-18 10:58 [PATCH 0/2] spi: rspi: Add support for configuring word order Geert Uytterhoeven [not found] ` <20200218105810.902-1-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> @ 2020-02-18 10:58 ` Geert Uytterhoeven 2020-02-19 0:11 ` Applied "spi: rspi: Add support for LSB-first word order" to the spi tree Mark Brown 1 sibling, 1 reply; 5+ messages in thread From: Geert Uytterhoeven @ 2020-02-18 10:58 UTC (permalink / raw) To: Mark Brown Cc: Hoan Nguyen An, linux-spi, linux-renesas-soc, Geert Uytterhoeven All RSPI variants support selecting the word order. Advertize support for LSB-first order, and act upon the flag being set. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- drivers/spi/spi-rspi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 7a1e6d524f34a416..aef05f2ac749c21d 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -933,6 +933,8 @@ static int rspi_prepare_message(struct spi_controller *ctlr, rspi->spcmd |= SPCMD_CPOL; if (spi->mode & SPI_CPHA) rspi->spcmd |= SPCMD_CPHA; + if (spi->mode & SPI_LSB_FIRST) + rspi->spcmd |= SPCMD_LSBF; /* Configure slave signal to assert */ rspi->spcmd |= SPCMD_SSLA(spi->cs_gpiod ? rspi->ctlr->unused_native_cs @@ -1255,7 +1257,8 @@ static int rspi_probe(struct platform_device *pdev) ctlr->transfer_one = ops->transfer_one; ctlr->prepare_message = rspi_prepare_message; ctlr->unprepare_message = rspi_unprepare_message; - ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | ops->extra_mode_bits; + ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST | SPI_LOOP | + ops->extra_mode_bits; ctlr->flags = ops->flags; ctlr->dev.of_node = pdev->dev.of_node; ctlr->use_gpio_descriptors = true; -- 2.17.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Applied "spi: rspi: Add support for LSB-first word order" to the spi tree 2020-02-18 10:58 ` [PATCH 2/2] spi: rspi: Add support for LSB-first word order Geert Uytterhoeven @ 2020-02-19 0:11 ` Mark Brown 0 siblings, 0 replies; 5+ messages in thread From: Mark Brown @ 2020-02-19 0:11 UTC (permalink / raw) To: Geert Uytterhoeven Cc: Hoan Nguyen An, linux-renesas-soc, linux-spi, Mark Brown The patch spi: rspi: Add support for LSB-first word order has been applied to the spi tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git 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 >From c046f8fd83a902866ba3b122e9f57ca1c7de898c Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven <geert+renesas@glider.be> Date: Tue, 18 Feb 2020 11:58:09 +0100 Subject: [PATCH] spi: rspi: Add support for LSB-first word order All RSPI variants support selecting the word order. Advertize support for LSB-first order, and act upon the flag being set. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20200218105810.902-3-geert+renesas@glider.be Signed-off-by: Mark Brown <broonie@kernel.org> --- drivers/spi/spi-rspi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index 7a1e6d524f34..aef05f2ac749 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -933,6 +933,8 @@ static int rspi_prepare_message(struct spi_controller *ctlr, rspi->spcmd |= SPCMD_CPOL; if (spi->mode & SPI_CPHA) rspi->spcmd |= SPCMD_CPHA; + if (spi->mode & SPI_LSB_FIRST) + rspi->spcmd |= SPCMD_LSBF; /* Configure slave signal to assert */ rspi->spcmd |= SPCMD_SSLA(spi->cs_gpiod ? rspi->ctlr->unused_native_cs @@ -1255,7 +1257,8 @@ static int rspi_probe(struct platform_device *pdev) ctlr->transfer_one = ops->transfer_one; ctlr->prepare_message = rspi_prepare_message; ctlr->unprepare_message = rspi_unprepare_message; - ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LOOP | ops->extra_mode_bits; + ctlr->mode_bits = SPI_CPHA | SPI_CPOL | SPI_LSB_FIRST | SPI_LOOP | + ops->extra_mode_bits; ctlr->flags = ops->flags; ctlr->dev.of_node = pdev->dev.of_node; ctlr->use_gpio_descriptors = true; -- 2.20.1 ^ permalink raw reply related [flat|nested] 5+ messages in thread
end of thread, other threads:[~2020-02-19 0:11 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-02-18 10:58 [PATCH 0/2] spi: rspi: Add support for configuring word order Geert Uytterhoeven [not found] ` <20200218105810.902-1-geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org> 2020-02-18 10:58 ` [PATCH 1/2] spi: rspi: Factor out handling of common mode bits Geert Uytterhoeven 2020-02-19 0:11 ` Applied "spi: rspi: Factor out handling of common mode bits" to the spi tree Mark Brown 2020-02-18 10:58 ` [PATCH 2/2] spi: rspi: Add support for LSB-first word order Geert Uytterhoeven 2020-02-19 0:11 ` Applied "spi: rspi: Add support for LSB-first word order" to the spi tree Mark Brown
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