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From: Sven Peter via B4 Relay <devnull+sven.svenpeter.dev@kernel.org>
To: Janne Grunau <j@jannau.net>,
	Alyssa Rosenzweig <alyssa@rosenzweig.io>,
	 Madhavan Srinivasan <maddy@linux.ibm.com>,
	 Michael Ellerman <mpe@ellerman.id.au>,
	Nicholas Piggin <npiggin@gmail.com>,
	 Christophe Leroy <christophe.leroy@csgroup.eu>,
	 Naveen N Rao <naveen@kernel.org>,
	Andi Shyti <andi.shyti@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org, asahi@lists.linux.dev,
	 linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org,
	 linux-kernel@vger.kernel.org, Sven Peter <sven@svenpeter.dev>,
	 Hector Martin <marcan@marcan.st>
Subject: [PATCH 1/4] i2c: pasemi: Add registers bits and switch to BIT()
Date: Sat, 22 Feb 2025 13:38:33 +0000	[thread overview]
Message-ID: <20250222-pasemi-fixes-v1-1-d7ea33d50c5e@svenpeter.dev> (raw)
In-Reply-To: <20250222-pasemi-fixes-v1-0-d7ea33d50c5e@svenpeter.dev>

From: Sven Peter <sven@svenpeter.dev>

Add the missing register bits to the defines and also switch
those to use the BIT macro which is much more readable than
using hardcoded masks

Co-developed-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
---
 drivers/i2c/busses/i2c-pasemi-core.c | 40 ++++++++++++++++++++++--------------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/drivers/i2c/busses/i2c-pasemi-core.c b/drivers/i2c/busses/i2c-pasemi-core.c
index dac694a9d781..bd128ab2e2eb 100644
--- a/drivers/i2c/busses/i2c-pasemi-core.c
+++ b/drivers/i2c/busses/i2c-pasemi-core.c
@@ -5,6 +5,7 @@
  * SMBus host driver for PA Semi PWRficient
  */
 
+#include <linux/bitfield.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/kernel.h>
@@ -26,21 +27,30 @@
 #define REG_REV		0x28
 
 /* Register defs */
-#define MTXFIFO_READ	0x00000400
-#define MTXFIFO_STOP	0x00000200
-#define MTXFIFO_START	0x00000100
-#define MTXFIFO_DATA_M	0x000000ff
-
-#define MRXFIFO_EMPTY	0x00000100
-#define MRXFIFO_DATA_M	0x000000ff
-
-#define SMSTA_XEN	0x08000000
-#define SMSTA_MTN	0x00200000
-
-#define CTL_MRR		0x00000400
-#define CTL_MTR		0x00000200
-#define CTL_EN		0x00000800
-#define CTL_CLK_M	0x000000ff
+#define MTXFIFO_READ	BIT(10)
+#define MTXFIFO_STOP	BIT(9)
+#define MTXFIFO_START	BIT(8)
+#define MTXFIFO_DATA_M	GENMASK(7, 0)
+
+#define MRXFIFO_EMPTY	BIT(8)
+#define MRXFIFO_DATA_M	GENMASK(7, 0)
+
+#define SMSTA_XIP	BIT(28)
+#define SMSTA_XEN	BIT(27)
+#define SMSTA_JMD	BIT(25)
+#define SMSTA_JAM	BIT(24)
+#define SMSTA_MTO	BIT(23)
+#define SMSTA_MTA	BIT(22)
+#define SMSTA_MTN	BIT(21)
+#define SMSTA_MRNE	BIT(19)
+#define SMSTA_MTE	BIT(16)
+#define SMSTA_TOM	BIT(6)
+
+#define CTL_EN		BIT(11)
+#define CTL_MRR		BIT(10)
+#define CTL_MTR		BIT(9)
+#define CTL_UJM		BIT(8)
+#define CTL_CLK_M	GENMASK(7, 0)
 
 static inline void reg_write(struct pasemi_smbus *smbus, int reg, int val)
 {

-- 
2.34.1



  reply	other threads:[~2025-02-22 13:38 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-22 13:38 [PATCH 0/4] Apple/PASemi i2c error recovery fixes Sven Peter via B4 Relay
2025-02-22 13:38 ` Sven Peter via B4 Relay [this message]
2025-03-20  0:23   ` [PATCH 1/4] i2c: pasemi: Add registers bits and switch to BIT() Andi Shyti
2025-03-22 13:23     ` Andy Shevchenko
2025-03-30  8:50       ` Sven Peter
2025-02-22 13:38 ` [PATCH 2/4] i2c: pasemi: Improve error recovery Sven Peter via B4 Relay
2025-03-20  0:17   ` Andi Shyti
2025-03-22 10:25     ` Sven Peter
2025-02-22 13:38 ` [PATCH 3/4] i2c: pasemi: Enable the unjam machine Sven Peter via B4 Relay
2025-02-22 13:38 ` [PATCH 4/4] i2c: pasemi: Log bus reset causes Sven Peter via B4 Relay
2025-02-24 18:14 ` [PATCH 0/4] Apple/PASemi i2c error recovery fixes Alyssa Rosenzweig
2025-02-24 21:48 ` Neal Gompa

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