Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   William Breathitt Gray <vilhelm.gray@gmail.com>
To:     linus.walleij@linaro.org
Cc:     akpm@linux-foundation.org, linux-gpio@vger.kernel.org,
        linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
        andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk,
        yamada.masahiro@socionext.com, bgolaszewski@baylibre.com,
        linux-arm-kernel@lists.infradead.org,
        William Breathitt Gray <vilhelm.gray@gmail.com>
Subject: [PATCH v9 9/9] gpio: uniphier: Utilize for_each_set_clump8 macro
Date:   Sun,  3 Mar 2019 16:51:43 +0900
Message-Id: <0840d55707dacd1121659723246fa9f55737f426.1551598603.git.vilhelm.gray@gmail.com>
In-Reply-To: <cover.1551598603.git.vilhelm.gray@gmail.com>
References: <cover.1551598603.git.vilhelm.gray@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Replace verbose implementation in set_multiple callback with
for_each_set_clump8 macro to simplify code and improve clarity. An
improvement in this case is that banks that are not masked will now be
skipped.

Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
---
 drivers/gpio/gpio-uniphier.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/gpio/gpio-uniphier.c b/drivers/gpio/gpio-uniphier.c
index 0f662b297a95..df640cb29b9c 100644
--- a/drivers/gpio/gpio-uniphier.c
+++ b/drivers/gpio/gpio-uniphier.c
@@ -15,9 +15,6 @@
 #include <linux/spinlock.h>
 #include <dt-bindings/gpio/uniphier-gpio.h>
 
-#define UNIPHIER_GPIO_BANK_MASK		\
-				GENMASK((UNIPHIER_GPIO_LINES_PER_BANK) - 1, 0)
-
 #define UNIPHIER_GPIO_IRQ_MAX_NUM	24
 
 #define UNIPHIER_GPIO_PORT_DATA		0x0	/* data */
@@ -147,15 +144,14 @@ static void uniphier_gpio_set(struct gpio_chip *chip,
 static void uniphier_gpio_set_multiple(struct gpio_chip *chip,
 				       unsigned long *mask, unsigned long *bits)
 {
-	unsigned int bank, shift, bank_mask, bank_bits;
-	int i;
+	unsigned int i;
+	unsigned long bank_mask;
+	unsigned int bank;
+	unsigned int bank_bits;
 
-	for (i = 0; i < chip->ngpio; i += UNIPHIER_GPIO_LINES_PER_BANK) {
+	for_each_set_clump8(i, bank_mask, mask, chip->ngpio) {
 		bank = i / UNIPHIER_GPIO_LINES_PER_BANK;
-		shift = i % BITS_PER_LONG;
-		bank_mask = (mask[BIT_WORD(i)] >> shift) &
-						UNIPHIER_GPIO_BANK_MASK;
-		bank_bits = bits[BIT_WORD(i)] >> shift;
+		bank_bits = bitmap_get_value8(bits, chip->ngpio, i);
 
 		uniphier_gpio_bank_write(chip, bank, UNIPHIER_GPIO_PORT_DATA,
 					 bank_mask, bank_bits);
-- 
2.21.0