All of lore.kernel.org
 help / color / mirror / Atom feed
From: Tudor Ambarus <tudor.ambarus@linaro.org>
To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org,
	krzysztof.kozlowski@linaro.org, semen.protsenko@linaro.org,
	conor+dt@kernel.org
Cc: alim.akhtar@samsung.com, linux-spi@vger.kernel.org,
	linux-samsung-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, andre.draszik@linaro.org,
	peter.griffin@linaro.org, kernel-team@android.com,
	willmcvicker@google.com, devicetree@vger.kernel.org,
	Tudor Ambarus <tudor.ambarus@linaro.org>
Subject: [PATCH v3 12/12] spi: s3c64xx: switch exynos850 to new port config data
Date: Fri, 16 Feb 2024 07:05:55 +0000	[thread overview]
Message-ID: <20240216070555.2483977-13-tudor.ambarus@linaro.org> (raw)
In-Reply-To: <20240216070555.2483977-1-tudor.ambarus@linaro.org>

Exynos850 has the same version of USI SPI (v2.1) as GS101.
Drop the fifo_lvl_mask and rx_lvl_offset and switch to the new port
config data.

Backward compatibility with DT is not broken because when alises are
set:
- the SPI core will set the bus number according to the alias ID
- the FIFO depth is always the same size for exynos850 (64 bytes) no
  matter the alias ID number.

Advantages of the change:
- drop dependency on the OF alias ID.
- FIFO depth is inferred from the compatible. Exynos850 integrates 3 SPI
  IPs, all with 64 bytes FIFO depths.
- use full mask for SPI_STATUS.{RX, TX}_FIFO_LVL fields. Using partial
  masks is misleading and can hide problems of the driver logic.

Just compiled tested.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
 drivers/spi/spi-s3c64xx.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 784786407d2e..9fcbe040cb2f 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1576,10 +1576,9 @@ static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
 };
 
 static const struct s3c64xx_spi_port_config exynos850_spi_port_config = {
-	/* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
-	.fifo_lvl_mask	= { 0x7f, 0x7f, 0x7f },
-	/* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
-	.rx_lvl_offset	= 15,
+	.fifo_depth	= 64,
+	.rx_fifomask	= S3C64XX_SPI_ST_RX_FIFO_RDY_V2,
+	.tx_fifomask	= S3C64XX_SPI_ST_TX_FIFO_RDY_V2,
 	.tx_st_done	= 25,
 	.clk_div	= 4,
 	.high_speed	= true,
-- 
2.44.0.rc0.258.g7320e95886-goog


WARNING: multiple messages have this Message-ID (diff)
From: Tudor Ambarus <tudor.ambarus@linaro.org>
To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org,
	krzysztof.kozlowski@linaro.org, semen.protsenko@linaro.org,
	conor+dt@kernel.org
Cc: alim.akhtar@samsung.com, linux-spi@vger.kernel.org,
	linux-samsung-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, andre.draszik@linaro.org,
	peter.griffin@linaro.org, kernel-team@android.com,
	willmcvicker@google.com, devicetree@vger.kernel.org,
	Tudor Ambarus <tudor.ambarus@linaro.org>
Subject: [PATCH v3 12/12] spi: s3c64xx: switch exynos850 to new port config data
Date: Fri, 16 Feb 2024 07:05:55 +0000	[thread overview]
Message-ID: <20240216070555.2483977-13-tudor.ambarus@linaro.org> (raw)
In-Reply-To: <20240216070555.2483977-1-tudor.ambarus@linaro.org>

Exynos850 has the same version of USI SPI (v2.1) as GS101.
Drop the fifo_lvl_mask and rx_lvl_offset and switch to the new port
config data.

Backward compatibility with DT is not broken because when alises are
set:
- the SPI core will set the bus number according to the alias ID
- the FIFO depth is always the same size for exynos850 (64 bytes) no
  matter the alias ID number.

Advantages of the change:
- drop dependency on the OF alias ID.
- FIFO depth is inferred from the compatible. Exynos850 integrates 3 SPI
  IPs, all with 64 bytes FIFO depths.
- use full mask for SPI_STATUS.{RX, TX}_FIFO_LVL fields. Using partial
  masks is misleading and can hide problems of the driver logic.

Just compiled tested.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
---
 drivers/spi/spi-s3c64xx.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 784786407d2e..9fcbe040cb2f 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1576,10 +1576,9 @@ static const struct s3c64xx_spi_port_config exynos5433_spi_port_config = {
 };
 
 static const struct s3c64xx_spi_port_config exynos850_spi_port_config = {
-	/* fifo_lvl_mask is deprecated. Use {rx, tx}_fifomask instead. */
-	.fifo_lvl_mask	= { 0x7f, 0x7f, 0x7f },
-	/* rx_lvl_offset is deprecated. Use {rx, tx}_fifomask instead. */
-	.rx_lvl_offset	= 15,
+	.fifo_depth	= 64,
+	.rx_fifomask	= S3C64XX_SPI_ST_RX_FIFO_RDY_V2,
+	.tx_fifomask	= S3C64XX_SPI_ST_TX_FIFO_RDY_V2,
 	.tx_st_done	= 25,
 	.clk_div	= 4,
 	.high_speed	= true,
-- 
2.44.0.rc0.258.g7320e95886-goog


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2024-02-16  7:06 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-16  7:05 [PATCH v3 00/12] spi: s3c64xx: remove OF alias ID dependency Tudor Ambarus
2024-02-16  7:05 ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 01/12] spi: dt-bindings: introduce FIFO depth properties Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16 19:45   ` Conor Dooley
2024-02-16 19:45     ` Conor Dooley
2024-02-16  7:05 ` [PATCH v3 02/12] spi: s3c64xx: define a magic value Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 03/12] spi: s3c64xx: allow full FIFO masks Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 04/12] spi: s3c64xx: determine the fifo depth only once Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 05/12] spi: s3c64xx: retrieve the FIFO depth from the device tree Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 06/12] spi: s3c64xx: allow FIFO depth to be determined from the compatible Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 07/12] spi: s3c64xx: let the SPI core determine the bus number Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 08/12] spi: s3c64xx: introduce s3c64xx_spi_set_port_id() Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 09/12] spi: s3c64xx: get rid of the OF alias ID dependency Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 10/12] spi: s3c64xx: deprecate fifo_lvl_mask, rx_lvl_offset and port_id Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` [PATCH v3 11/12] spi: s3c64xx: switch gs101 to new port config data Tudor Ambarus
2024-02-16  7:05   ` Tudor Ambarus
2024-02-16  7:05 ` Tudor Ambarus [this message]
2024-02-16  7:05   ` [PATCH v3 12/12] spi: s3c64xx: switch exynos850 " Tudor Ambarus
2024-02-21 17:56   ` Tudor Ambarus
2024-02-21 17:56     ` Tudor Ambarus
2024-02-24 23:59     ` Sam Protsenko
2024-02-24 23:59       ` Sam Protsenko
2024-03-06 14:08 ` [PATCH v3 00/12] spi: s3c64xx: remove OF alias ID dependency Mark Brown
2024-03-06 14:08   ` Mark Brown

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20240216070555.2483977-13-tudor.ambarus@linaro.org \
    --to=tudor.ambarus@linaro.org \
    --cc=alim.akhtar@samsung.com \
    --cc=andi.shyti@kernel.org \
    --cc=andre.draszik@linaro.org \
    --cc=broonie@kernel.org \
    --cc=conor+dt@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=kernel-team@android.com \
    --cc=krzysztof.kozlowski@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-samsung-soc@vger.kernel.org \
    --cc=linux-spi@vger.kernel.org \
    --cc=peter.griffin@linaro.org \
    --cc=robh@kernel.org \
    --cc=semen.protsenko@linaro.org \
    --cc=willmcvicker@google.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.