linux-kernel - [PATCH 2/5] regmap: Expose regmap_writeable function to check if a register is writable

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Date:   Wed, 19 Oct 2022 10:24:47 +0800
From:   chengwei <foxfly.lai.tw@...il.com>
To:     lee@...nel.org, broonie@...nel.org, rafael@...nel.org,
        mika.westerberg@...ux.intel.com, andriy.shevchenko@...ux.intel.com,
        linus.walleij@...aro.org, brgl@...ev.pl
Cc:     linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
        lenb@...nel.org, linux-acpi@...r.kernel.org,
        linux-gpio@...r.kernel.org, GaryWang@...on.com.tw,
        musa.lin@...jingtech.com, jack.chang@...jingtech.com,
        chengwei <larry.lai@...jingtech.com>,
        Nicola Lunghi <nicola.lunghi@...tex.com>
Subject: [PATCH 2/5] regmap: Expose regmap_writeable function to check if a register is writable

Expose the regmap_writeable function for pinctrl-upboard reference.

Signed-off-by: Nicola Lunghi <nicola.lunghi@...tex.com>
Signed-off-by: chengwei <larry.lai@...jingtech.com>
---
 drivers/base/regmap/internal.h | 5 -----
 drivers/base/regmap/regmap.c   | 5 +++++
 include/linux/regmap.h         | 6 ++++++
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index da8996e7a1f1..eec477755a5c 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -190,11 +190,6 @@ struct regcache_ops {
 	int (*drop)(struct regmap *map, unsigned int min, unsigned int max);
 };
 
-bool regmap_cached(struct regmap *map, unsigned int reg);
-bool regmap_writeable(struct regmap *map, unsigned int reg);
-bool regmap_readable(struct regmap *map, unsigned int reg);
-bool regmap_volatile(struct regmap *map, unsigned int reg);
-bool regmap_precious(struct regmap *map, unsigned int reg);
 bool regmap_writeable_noinc(struct regmap *map, unsigned int reg);
 bool regmap_readable_noinc(struct regmap *map, unsigned int reg);
 
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index fee221c5008c..182536fcce46 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -100,6 +100,7 @@ bool regmap_writeable(struct regmap *map, unsigned int reg)
 
 	return true;
 }
+EXPORT_SYMBOL_GPL(regmap_writeable);
 
 bool regmap_cached(struct regmap *map, unsigned int reg)
 {
@@ -123,6 +124,7 @@ bool regmap_cached(struct regmap *map, unsigned int reg)
 
 	return true;
 }
+EXPORT_SYMBOL_GPL(regmap_cached);
 
 bool regmap_readable(struct regmap *map, unsigned int reg)
 {
@@ -143,6 +145,7 @@ bool regmap_readable(struct regmap *map, unsigned int reg)
 
 	return true;
 }
+EXPORT_SYMBOL_GPL(regmap_readable);
 
 bool regmap_volatile(struct regmap *map, unsigned int reg)
 {
@@ -160,6 +163,7 @@ bool regmap_volatile(struct regmap *map, unsigned int reg)
 	else
 		return true;
 }
+EXPORT_SYMBOL_GPL(regmap_volatile);
 
 bool regmap_precious(struct regmap *map, unsigned int reg)
 {
@@ -174,6 +178,7 @@ bool regmap_precious(struct regmap *map, unsigned int reg)
 
 	return false;
 }
+EXPORT_SYMBOL_GPL(regmap_precious);
 
 bool regmap_writeable_noinc(struct regmap *map, unsigned int reg)
 {
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 7cf2157134ac..4bfa681805cb 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -1225,6 +1225,12 @@ void regcache_mark_dirty(struct regmap *map);
 bool regmap_check_range_table(struct regmap *map, unsigned int reg,
 			      const struct regmap_access_table *table);
 
+bool regmap_cached(struct regmap *map, unsigned int reg);
+bool regmap_writeable(struct regmap *map, unsigned int reg);
+bool regmap_readable(struct regmap *map, unsigned int reg);
+bool regmap_volatile(struct regmap *map, unsigned int reg);
+bool regmap_precious(struct regmap *map, unsigned int reg);
+
 int regmap_register_patch(struct regmap *map, const struct reg_sequence *regs,
 			  int num_regs);
 int regmap_parse_val(struct regmap *map, const void *buf,
-- 
2.17.1