[v1] mfd: mc13xxx: Use bitfield helpers

[PATCH resend] mfd: mc13xxx: Use bitfield helpers

Posted by Geert Uytterhoeven 1 year, 11 months ago

Use the FIELD_GET() helper, instead of defining a custom macro
implementing the same operation.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Compile-tested only.
---
 drivers/mfd/mc13xxx-core.c | 22 +++++++++++-----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c
index 1000572761a84afa..920797b806ced8b9 100644
--- a/drivers/mfd/mc13xxx-core.c
+++ b/drivers/mfd/mc13xxx-core.c
@@ -7,6 +7,7 @@
  * Copyright 2009 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
  */
 
+#include <linux/bitfield.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -174,28 +175,27 @@ int mc13xxx_irq_free(struct mc13xxx *mc13xxx, int irq, void *dev)
 }
 EXPORT_SYMBOL(mc13xxx_irq_free);
 
-#define maskval(reg, mask)	(((reg) & (mask)) >> __ffs(mask))
 static void mc13xxx_print_revision(struct mc13xxx *mc13xxx, u32 revision)
 {
 	dev_info(mc13xxx->dev, "%s: rev: %d.%d, "
 			"fin: %d, fab: %d, icid: %d/%d\n",
 			mc13xxx->variant->name,
-			maskval(revision, MC13XXX_REVISION_REVFULL),
-			maskval(revision, MC13XXX_REVISION_REVMETAL),
-			maskval(revision, MC13XXX_REVISION_FIN),
-			maskval(revision, MC13XXX_REVISION_FAB),
-			maskval(revision, MC13XXX_REVISION_ICID),
-			maskval(revision, MC13XXX_REVISION_ICIDCODE));
+			FIELD_GET(MC13XXX_REVISION_REVFULL, revision),
+			FIELD_GET(MC13XXX_REVISION_REVMETAL, revision),
+			FIELD_GET(MC13XXX_REVISION_FIN, revision),
+			FIELD_GET(MC13XXX_REVISION_FAB, revision),
+			FIELD_GET(MC13XXX_REVISION_ICID, revision),
+			FIELD_GET(MC13XXX_REVISION_ICIDCODE, revision));
 }
 
 static void mc34708_print_revision(struct mc13xxx *mc13xxx, u32 revision)
 {
 	dev_info(mc13xxx->dev, "%s: rev %d.%d, fin: %d, fab: %d\n",
 			mc13xxx->variant->name,
-			maskval(revision, MC34708_REVISION_REVFULL),
-			maskval(revision, MC34708_REVISION_REVMETAL),
-			maskval(revision, MC34708_REVISION_FIN),
-			maskval(revision, MC34708_REVISION_FAB));
+			FIELD_GET(MC34708_REVISION_REVFULL, revision),
+			FIELD_GET(MC34708_REVISION_REVMETAL, revision),
+			FIELD_GET(MC34708_REVISION_FIN, revision),
+			FIELD_GET(MC34708_REVISION_FAB, revision));
 }
 
 /* These are only exported for mc13xxx-i2c and mc13xxx-spi */
-- 
2.34.1

Re: (subset) [PATCH resend] mfd: mc13xxx: Use bitfield helpers

Posted by Lee Jones 1 year, 11 months ago

On Thu, 15 Feb 2024 14:07:13 +0100, Geert Uytterhoeven wrote:
> Use the FIELD_GET() helper, instead of defining a custom macro
> implementing the same operation.
> 
> 

Applied, thanks!

[1/1] mfd: mc13xxx: Use bitfield helpers
      commit: 18cf74b67f1db31ef8e2cd256e605fe40a034cdc

--
Lee Jones [李琼斯]

Re: [PATCH resend] mfd: mc13xxx: Use bitfield helpers

Posted by Uwe Kleine-König 1 year, 11 months ago

On Thu, Feb 15, 2024 at 02:07:13PM +0100, Geert Uytterhoeven wrote:
> Use the FIELD_GET() helper, instead of defining a custom macro
> implementing the same operation.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
> Compile-tested only.

Comparing the compiled driver with and without this patch, there is no
difference when looking at

	objdump -d drivers/mfd/mc13xxx-core.o

So:

Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |