linux-kernel - [PATCH 2/5] mfd: sunxi-gpadc-mfd: add buffer structure

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Date:	Wed, 20 Jul 2016 10:29:08 +0200
From:	Quentin Schulz <quentin.schulz@...e-electrons.com>
To:	jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
	pmeerw@...erw.net, maxime.ripard@...e-electrons.com, wens@...e.org,
	dmitry.torokhov@...il.com, lee.jones@...aro.org
Cc:	Quentin Schulz <quentin.schulz@...e-electrons.com>,
	antoine.tenart@...e-electrons.com,
	thomas.petazzoni@...e-electrons.com, linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-input@...r.kernel.org
Subject: [PATCH 2/5] mfd: sunxi-gpadc-mfd: add buffer structure

This adds a buffer structure for files including the sunxi-gpadc-mfd
header. This structure has a buffer of 32 u32 values to store data from the
FIFO of the GPADC of Allwinner SoCs. A buff_size is provided in case the
buffer is not full.

Signed-off-by: Quentin Schulz <quentin.schulz@...e-electrons.com>
---
 include/linux/mfd/sunxi-gpadc-mfd.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/mfd/sunxi-gpadc-mfd.h b/include/linux/mfd/sunxi-gpadc-mfd.h
index 7155845..f658299 100644
--- a/include/linux/mfd/sunxi-gpadc-mfd.h
+++ b/include/linux/mfd/sunxi-gpadc-mfd.h
@@ -20,4 +20,9 @@ struct sunxi_gpadc_mfd_dev {
 	void __iomem			*regs;
 };
 
+struct sunxi_gpadc_buffer {
+	u32				buffer[32];
+	unsigned int			buff_size;
+};
+
 #endif
-- 
2.5.0