Commit 39b6cc66 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'stmp-dev' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc 

Pull arm-soc stmp-dev library code from Olof Johansson:
 "A number of devices are using a common register layout, this adds
  support code for it in lib/stmp_device.c so we do not need to
  duplicate it in each driver."

Fix up trivial conflicts in drivers/i2c/busses/i2c-mxs.c and
lib/Makefile

* tag 'stmp-dev' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  i2c: mxs: use global reset function
  lib: add support for stmp-style devices
parents 27953437 3f81b2c4

drivers/i2c/busses/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -483,6 +483,7 @@ config I2C_MV64XXX 
config I2C_MXS

	tristate "Freescale i.MX28 I2C interface"

	depends on SOC_IMX28

	select STMP_DEVICE

	help

	  Say Y here if you want to use the I2C bus controller on

	  the Freescale i.MX28 processors.

drivers/i2c/busses/i2c-mxs.c

+2 −7
Original line number Diff line number Diff line
@@ -27,8 +27,7 @@ 
#include <linux/jiffies.h>

#include <linux/io.h>

#include <linux/pinctrl/consumer.h>



#include <mach/common.h>

#include <linux/stmp_device.h>



#define DRIVER_NAME "mxs-i2c"
@@ -112,13 +111,9 @@ struct mxs_i2c_dev { 
	struct i2c_adapter adapter;

};



/*

 * TODO: check if calls to here are really needed. If not, we could get rid of

 * mxs_reset_block and the mach-dependency. Needs an I2C analyzer, probably.

 */

static void mxs_i2c_reset(struct mxs_i2c_dev *i2c)

{

	mxs_reset_block(i2c->regs);

	stmp_reset_block(i2c->regs);

	writel(MXS_I2C_IRQ_MASK << 8, i2c->regs + MXS_I2C_CTRL1_SET);

	writel(MXS_I2C_QUEUECTRL_PIO_QUEUE_MODE,

			i2c->regs + MXS_I2C_QUEUECTRL_SET);

include/linux/stmp_device.h

0 → 100644
+20 −0
Original line number Diff line number Diff line 
/*

 * basic functions for devices following the "stmp" style register layout

 *

 * Copyright (C) 2011 Wolfram Sang, Pengutronix e.K.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 */



#ifndef __STMP_DEVICE_H__

#define __STMP_DEVICE_H__



#define STMP_OFFSET_REG_SET	0x4

#define STMP_OFFSET_REG_CLR	0x8

#define STMP_OFFSET_REG_TOG	0xc



extern int stmp_reset_block(void __iomem *);

#endif /* __STMP_DEVICE_H__ */

lib/Kconfig

+3 −0
Original line number Diff line number Diff line
@@ -36,6 +36,9 @@ config GENERIC_IO 
	boolean

	default n



config STMP_DEVICE

	bool



config CRC_CCITT

	tristate "CRC-CCITT functions"

	help

lib/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -127,6 +127,8 @@ obj-$(CONFIG_DDR) += jedec_ddr_data.o 


obj-$(CONFIG_GENERIC_STRNCPY_FROM_USER) += strncpy_from_user.o



obj-$(CONFIG_STMP_DEVICE) += stmp_device.o



hostprogs-y	:= gen_crc32table

clean-files	:= crc32table.h

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