From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Nikolaus Schaller" Subject: [PATCH v5 4/7] gpio: pca953x: define masks for addressing common and extended registers Date: Sat, 28 Apr 2018 18:31:34 +0200 Message-ID: <3df974ea890116d759844e56362dc0786388869a.1524933096.git.hns@goldelico.com> References: Return-path: In-Reply-To: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org To: galak@codeaurora.org, andy.shevchenko@gmail.com, Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Linus Walleij , Alexandre Courbot Cc: devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org, kernel@pyra-handheld.com, "H. Nikolaus Schaller" List-Id: linux-gpio@vger.kernel.org These mask bits are to be used to map the extended register addreseses (which are defined for an unsupported 8-bit pcal chip) to 16 and 24 bit chips (pcal6524). Signed-off-by: H. Nikolaus Schaller --- drivers/gpio/gpio-pca953x.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 2b667166e855..fc863faa3ce4 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -56,6 +56,9 @@ #define PCAL6524_DEBOUNCE 0x2d #define PCA_GPIO_MASK 0x00FF +#define PCAL_GPIO_MASK GENMASK(4, 0) +#define PCAL_PINCTRL_MASK (~PCAL_GPIO_MASK) + #define PCA_INT 0x0100 #define PCA_PCAL 0x0200 #define PCA_LATCH_INT (PCA_PCAL | PCA_INT) -- 2.12.2