Initial commit; kernel source import

drivers/misc/lis3lv02d/Kconfig

@@ -0,0 +1,37 @@
+#
+# STMicroelectonics LIS3LV02D and similar accelerometers
+#
+
+config SENSORS_LIS3_SPI
+	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (SPI)"
+	depends on !ACPI && SPI_MASTER && INPUT
+	select SENSORS_LIS3LV02D
+	default n
+	help
+	  This driver provides support for the LIS3LV02Dx accelerometer connected
+	  via SPI. The accelerometer data is readable via
+	  /sys/devices/platform/lis3lv02d.
+
+	  This driver also provides an absolute input class device, allowing
+	  the laptop to act as a pinball machine-esque joystick.
+
+	  This driver can also be built as modules.  If so, the core module
+	  will be called lis3lv02d and a specific module for the SPI transport
+	  is called lis3lv02d_spi.
+
+config SENSORS_LIS3_I2C
+	tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (I2C)"
+	depends on I2C && INPUT
+	select SENSORS_LIS3LV02D
+	default n
+	help
+	  This driver provides support for the LIS3LV02Dx accelerometer connected
+	  via I2C. The accelerometer data is readable via
+	  /sys/devices/platform/lis3lv02d.
+
+	  This driver also provides an absolute input class device, allowing
+	  the device to act as a pinball machine-esque joystick.
+
+	  This driver can also be built as modules.  If so, the core module
+	  will be called lis3lv02d and a specific module for the I2C transport
+	  is called lis3lv02d_i2c.

drivers/misc/lis3lv02d/Makefile

@@ -0,0 +1,7 @@
+#
+# STMicroelectonics LIS3LV02D and similar accelerometers
+#
+
+obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o
+obj-$(CONFIG_SENSORS_LIS3_SPI)	+= lis3lv02d_spi.o
+obj-$(CONFIG_SENSORS_LIS3_I2C)	+= lis3lv02d_i2c.o

drivers/misc/lis3lv02d/lis3lv02d.h

@@ -0,0 +1,331 @@
+/*
+ *  lis3lv02d.h - ST LIS3LV02DL accelerometer driver
+ *
+ *  Copyright (C) 2007-2008 Yan Burman
+ *  Copyright (C) 2008-2009 Eric Piel
+ *
+ *  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.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/platform_device.h>
+#include <linux/input-polldev.h>
+#include <linux/regulator/consumer.h>
+#include <linux/miscdevice.h>
+
+/*
+ * This driver tries to support the "digital" accelerometer chips from
+ * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
+ * LIS331DLH, LIS35DE, or LIS202DL. They are very similar in terms of
+ * programming, with almost the same registers. In addition to differing
+ * on physical properties, they differ on the number of axes (2/3),
+ * precision (8/12 bits), and special features (freefall detection,
+ * click...). Unfortunately, not all the differences can be probed via
+ * a register. They can be connected either via I²C or SPI.
+ */
+
+#include <linux/lis3lv02d.h>
+
+enum lis3_reg {
+	WHO_AM_I	= 0x0F,
+	OFFSET_X	= 0x16,
+	OFFSET_Y	= 0x17,
+	OFFSET_Z	= 0x18,
+	GAIN_X		= 0x19,
+	GAIN_Y		= 0x1A,
+	GAIN_Z		= 0x1B,
+	CTRL_REG1	= 0x20,
+	CTRL_REG2	= 0x21,
+	CTRL_REG3	= 0x22,
+	CTRL_REG4	= 0x23,
+	HP_FILTER_RESET	= 0x23,
+	STATUS_REG	= 0x27,
+	OUTX_L		= 0x28,
+	OUTX_H		= 0x29,
+	OUTX		= 0x29,
+	OUTY_L		= 0x2A,
+	OUTY_H		= 0x2B,
+	OUTY		= 0x2B,
+	OUTZ_L		= 0x2C,
+	OUTZ_H		= 0x2D,
+	OUTZ		= 0x2D,
+};
+
+enum lis302d_reg {
+	FF_WU_CFG_1	= 0x30,
+	FF_WU_SRC_1	= 0x31,
+	FF_WU_THS_1	= 0x32,
+	FF_WU_DURATION_1 = 0x33,
+	FF_WU_CFG_2	= 0x34,
+	FF_WU_SRC_2	= 0x35,
+	FF_WU_THS_2	= 0x36,
+	FF_WU_DURATION_2 = 0x37,
+	CLICK_CFG	= 0x38,
+	CLICK_SRC	= 0x39,
+	CLICK_THSY_X	= 0x3B,
+	CLICK_THSZ	= 0x3C,
+	CLICK_TIMELIMIT	= 0x3D,
+	CLICK_LATENCY	= 0x3E,
+	CLICK_WINDOW	= 0x3F,
+};
+
+enum lis3lv02d_reg {
+	FF_WU_CFG	= 0x30,
+	FF_WU_SRC	= 0x31,
+	FF_WU_ACK	= 0x32,
+	FF_WU_THS_L	= 0x34,
+	FF_WU_THS_H	= 0x35,
+	FF_WU_DURATION	= 0x36,
+	DD_CFG		= 0x38,
+	DD_SRC		= 0x39,
+	DD_ACK		= 0x3A,
+	DD_THSI_L	= 0x3C,
+	DD_THSI_H	= 0x3D,
+	DD_THSE_L	= 0x3E,
+	DD_THSE_H	= 0x3F,
+};
+
+enum lis3_who_am_i {
+	WAI_3DLH	= 0x32,	/* 16 bits: LIS331DLH */
+	WAI_3DC		= 0x33,	/* 8 bits: LIS3DC, HP3DC */
+	WAI_12B		= 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
+	WAI_8B		= 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
+	WAI_6B		= 0x52, /* 6 bits: LIS331DLF - not supported */
+};
+
+enum lis3_type {
+	LIS3LV02D,
+	LIS3DC,
+	HP3DC,
+	LIS2302D,
+	LIS331DLF,
+	LIS331DLH,
+};
+
+enum lis3lv02d_ctrl1_12b {
+	CTRL1_Xen	= 0x01,
+	CTRL1_Yen	= 0x02,
+	CTRL1_Zen	= 0x04,
+	CTRL1_ST	= 0x08,
+	CTRL1_DF0	= 0x10,
+	CTRL1_DF1	= 0x20,
+	CTRL1_PD0	= 0x40,
+	CTRL1_PD1	= 0x80,
+};
+
+/* Delta to ctrl1_12b version */
+enum lis3lv02d_ctrl1_8b {
+	CTRL1_STM	= 0x08,
+	CTRL1_STP	= 0x10,
+	CTRL1_FS	= 0x20,
+	CTRL1_PD	= 0x40,
+	CTRL1_DR	= 0x80,
+};
+
+enum lis3lv02d_ctrl1_3dc {
+	CTRL1_ODR0	= 0x10,
+	CTRL1_ODR1	= 0x20,
+	CTRL1_ODR2	= 0x40,
+	CTRL1_ODR3	= 0x80,
+};
+
+enum lis331dlh_ctrl1 {
+	CTRL1_DR0	= 0x08,
+	CTRL1_DR1	= 0x10,
+	CTRL1_PM0	= 0x20,
+	CTRL1_PM1	= 0x40,
+	CTRL1_PM2	= 0x80,
+};
+
+enum lis331dlh_ctrl2 {
+	CTRL2_HPEN1	= 0x04,
+	CTRL2_HPEN2	= 0x08,
+	CTRL2_FDS_3DLH	= 0x10,
+	CTRL2_BOOT_3DLH	= 0x80,
+};
+
+enum lis331dlh_ctrl4 {
+	CTRL4_STSIGN	= 0x08,
+	CTRL4_BLE	= 0x40,
+	CTRL4_BDU	= 0x80,
+};
+
+enum lis3lv02d_ctrl2 {
+	CTRL2_DAS	= 0x01,
+	CTRL2_SIM	= 0x02,
+	CTRL2_DRDY	= 0x04,
+	CTRL2_IEN	= 0x08,
+	CTRL2_BOOT	= 0x10,
+	CTRL2_BLE	= 0x20,
+	CTRL2_BDU	= 0x40, /* Block Data Update */
+	CTRL2_FS	= 0x80, /* Full Scale selection */
+};
+
+enum lis3lv02d_ctrl4_3dc {
+	CTRL4_SIM	= 0x01,
+	CTRL4_ST0	= 0x02,
+	CTRL4_ST1	= 0x04,
+	CTRL4_FS0	= 0x10,
+	CTRL4_FS1	= 0x20,
+};
+
+enum lis302d_ctrl2 {
+	HP_FF_WU2	= 0x08,
+	HP_FF_WU1	= 0x04,
+	CTRL2_BOOT_8B   = 0x40,
+};
+
+enum lis3lv02d_ctrl3 {
+	CTRL3_CFS0	= 0x01,
+	CTRL3_CFS1	= 0x02,
+	CTRL3_FDS	= 0x10,
+	CTRL3_HPFF	= 0x20,
+	CTRL3_HPDD	= 0x40,
+	CTRL3_ECK	= 0x80,
+};
+
+enum lis3lv02d_status_reg {
+	STATUS_XDA	= 0x01,
+	STATUS_YDA	= 0x02,
+	STATUS_ZDA	= 0x04,
+	STATUS_XYZDA	= 0x08,
+	STATUS_XOR	= 0x10,
+	STATUS_YOR	= 0x20,
+	STATUS_ZOR	= 0x40,
+	STATUS_XYZOR	= 0x80,
+};
+
+enum lis3lv02d_ff_wu_cfg {
+	FF_WU_CFG_XLIE	= 0x01,
+	FF_WU_CFG_XHIE	= 0x02,
+	FF_WU_CFG_YLIE	= 0x04,
+	FF_WU_CFG_YHIE	= 0x08,
+	FF_WU_CFG_ZLIE	= 0x10,
+	FF_WU_CFG_ZHIE	= 0x20,
+	FF_WU_CFG_LIR	= 0x40,
+	FF_WU_CFG_AOI	= 0x80,
+};
+
+enum lis3lv02d_ff_wu_src {
+	FF_WU_SRC_XL	= 0x01,
+	FF_WU_SRC_XH	= 0x02,
+	FF_WU_SRC_YL	= 0x04,
+	FF_WU_SRC_YH	= 0x08,
+	FF_WU_SRC_ZL	= 0x10,
+	FF_WU_SRC_ZH	= 0x20,
+	FF_WU_SRC_IA	= 0x40,
+};
+
+enum lis3lv02d_dd_cfg {
+	DD_CFG_XLIE	= 0x01,
+	DD_CFG_XHIE	= 0x02,
+	DD_CFG_YLIE	= 0x04,
+	DD_CFG_YHIE	= 0x08,
+	DD_CFG_ZLIE	= 0x10,
+	DD_CFG_ZHIE	= 0x20,
+	DD_CFG_LIR	= 0x40,
+	DD_CFG_IEND	= 0x80,
+};
+
+enum lis3lv02d_dd_src {
+	DD_SRC_XL	= 0x01,
+	DD_SRC_XH	= 0x02,
+	DD_SRC_YL	= 0x04,
+	DD_SRC_YH	= 0x08,
+	DD_SRC_ZL	= 0x10,
+	DD_SRC_ZH	= 0x20,
+	DD_SRC_IA	= 0x40,
+};
+
+enum lis3lv02d_click_src_8b {
+	CLICK_SINGLE_X	= 0x01,
+	CLICK_DOUBLE_X	= 0x02,
+	CLICK_SINGLE_Y	= 0x04,
+	CLICK_DOUBLE_Y	= 0x08,
+	CLICK_SINGLE_Z	= 0x10,
+	CLICK_DOUBLE_Z	= 0x20,
+	CLICK_IA	= 0x40,
+};
+
+enum lis3lv02d_reg_state {
+	LIS3_REG_OFF	= 0x00,
+	LIS3_REG_ON	= 0x01,
+};
+
+union axis_conversion {
+	struct {
+		int x, y, z;
+	};
+	int as_array[3];
+
+};
+
+struct lis3lv02d {
+	void			*bus_priv; /* used by the bus layer only */
+	struct device		*pm_dev; /* for pm_runtime purposes */
+	int (*init) (struct lis3lv02d *lis3);
+	int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
+	int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
+	int (*blkread) (struct lis3lv02d *lis3, int reg, int len, u8 *ret);
+	int (*reg_ctrl) (struct lis3lv02d *lis3, bool state);
+
+	int                     *odrs;     /* Supported output data rates */
+	u8			*regs;	   /* Regs to store / restore */
+	int			regs_size;
+	u8                      *reg_cache;
+	bool			regs_stored;
+	u8                      odr_mask;  /* ODR bit mask */
+	u8			whoami;    /* indicates measurement precision */
+	s16 (*read_data) (struct lis3lv02d *lis3, int reg);
+	int			mdps_max_val;
+	int			pwron_delay;
+	int                     scale; /*
+					* relationship between 1 LBS and mG
+					* (1/1000th of earth gravity)
+					*/
+
+	struct input_polled_dev	*idev;     /* input device */
+	struct platform_device	*pdev;     /* platform device */
+	struct regulator_bulk_data regulators[2];
+	atomic_t		count;     /* interrupt count after last read */
+	union axis_conversion	ac;        /* hw -> logical axis */
+	int			mapped_btns[3];
+
+	u32			irq;       /* IRQ number */
+	struct fasync_struct	*async_queue; /* queue for the misc device */
+	wait_queue_head_t	misc_wait; /* Wait queue for the misc device */
+	unsigned long		misc_opened; /* bit0: whether the device is open */
+	struct miscdevice	miscdev;
+
+	int                     data_ready_count[2];
+	atomic_t		wake_thread;
+	unsigned char           irq_cfg;
+	unsigned int		shift_adj;
+
+	struct lis3lv02d_platform_data *pdata;	/* for passing board config */
+	struct mutex		mutex;     /* Serialize poll and selftest */
+
+#ifdef CONFIG_OF
+	struct device_node	*of_node;
+#endif
+};
+
+int lis3lv02d_init_device(struct lis3lv02d *lis3);
+int lis3lv02d_joystick_enable(struct lis3lv02d *lis3);
+void lis3lv02d_joystick_disable(struct lis3lv02d *lis3);
+void lis3lv02d_poweroff(struct lis3lv02d *lis3);
+int lis3lv02d_poweron(struct lis3lv02d *lis3);
+int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
+int lis3lv02d_init_dt(struct lis3lv02d *lis3);
+
+extern struct lis3lv02d lis3_dev;

drivers/misc/lis3lv02d/lis3lv02d_i2c.c

@@ -0,0 +1,291 @@
+/*
+ * drivers/hwmon/lis3lv02d_i2c.c
+ *
+ * Implements I2C interface for lis3lv02d (STMicroelectronics) accelerometer.
+ * Driver is based on corresponding SPI driver written by Daniel Mack
+ * (lis3lv02d_spi.c (C) 2009 Daniel Mack <daniel@caiaq.de> ).
+ *
+ * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/pm_runtime.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_device.h>
+
+#include "lis3lv02d.h"
+
+#define DRV_NAME	"lis3lv02d_i2c"
+
+static const char reg_vdd[]    = "Vdd";
+static const char reg_vdd_io[] = "Vdd_IO";
+
+static int lis3_reg_ctrl(struct lis3lv02d *lis3, bool state)
+{
+	int ret;
+	if (state == LIS3_REG_OFF) {
+		ret = regulator_bulk_disable(ARRAY_SIZE(lis3->regulators),
+					lis3->regulators);
+	} else {
+		ret = regulator_bulk_enable(ARRAY_SIZE(lis3->regulators),
+					lis3->regulators);
+		/* Chip needs time to wakeup. Not mentioned in datasheet */
+		usleep_range(10000, 20000);
+	}
+	return ret;
+}
+
+static inline s32 lis3_i2c_write(struct lis3lv02d *lis3, int reg, u8 value)
+{
+	struct i2c_client *c = lis3->bus_priv;
+	return i2c_smbus_write_byte_data(c, reg, value);
+}
+
+static inline s32 lis3_i2c_read(struct lis3lv02d *lis3, int reg, u8 *v)
+{
+	struct i2c_client *c = lis3->bus_priv;
+	*v = i2c_smbus_read_byte_data(c, reg);
+	return 0;
+}
+
+static inline s32 lis3_i2c_blockread(struct lis3lv02d *lis3, int reg, int len,
+				u8 *v)
+{
+	struct i2c_client *c = lis3->bus_priv;
+	reg |= (1 << 7); /* 7th bit enables address auto incrementation */
+	return i2c_smbus_read_i2c_block_data(c, reg, len, v);
+}
+
+static int lis3_i2c_init(struct lis3lv02d *lis3)
+{
+	u8 reg;
+	int ret;
+
+	lis3_reg_ctrl(lis3, LIS3_REG_ON);
+
+	lis3->read(lis3, WHO_AM_I, &reg);
+	if (reg != lis3->whoami)
+		printk(KERN_ERR "lis3: power on failure\n");
+
+	/* power up the device */
+	ret = lis3->read(lis3, CTRL_REG1, &reg);
+	if (ret < 0)
+		return ret;
+
+	if (lis3->whoami == WAI_3DLH)
+		reg |= CTRL1_PM0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
+	else
+		reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
+
+	return lis3->write(lis3, CTRL_REG1, reg);
+}
+
+/* Default axis mapping but it can be overwritten by platform data */
+static union axis_conversion lis3lv02d_axis_map =
+	{ .as_array = { LIS3_DEV_X, LIS3_DEV_Y, LIS3_DEV_Z } };
+
+#ifdef CONFIG_OF
+static struct of_device_id lis3lv02d_i2c_dt_ids[] = {
+	{ .compatible = "st,lis3lv02d" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, lis3lv02d_i2c_dt_ids);
+#endif
+
+static int lis3lv02d_i2c_probe(struct i2c_client *client,
+					const struct i2c_device_id *id)
+{
+	int ret = 0;
+	struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
+
+#ifdef CONFIG_OF
+	if (of_match_device(lis3lv02d_i2c_dt_ids, &client->dev)) {
+		lis3_dev.of_node = client->dev.of_node;
+		ret = lis3lv02d_init_dt(&lis3_dev);
+		if (ret)
+			return ret;
+		pdata = lis3_dev.pdata;
+	}
+#endif
+
+	if (pdata) {
+		if ((pdata->driver_features & LIS3_USE_BLOCK_READ) &&
+			(i2c_check_functionality(client->adapter,
+						I2C_FUNC_SMBUS_I2C_BLOCK)))
+			lis3_dev.blkread  = lis3_i2c_blockread;
+
+		if (pdata->axis_x)
+			lis3lv02d_axis_map.x = pdata->axis_x;
+
+		if (pdata->axis_y)
+			lis3lv02d_axis_map.y = pdata->axis_y;
+
+		if (pdata->axis_z)
+			lis3lv02d_axis_map.z = pdata->axis_z;
+
+		if (pdata->setup_resources)
+			ret = pdata->setup_resources();
+
+		if (ret)
+			goto fail;
+	}
+
+	lis3_dev.regulators[0].supply = reg_vdd;
+	lis3_dev.regulators[1].supply = reg_vdd_io;
+	ret = regulator_bulk_get(&client->dev,
+				 ARRAY_SIZE(lis3_dev.regulators),
+				 lis3_dev.regulators);
+	if (ret < 0)
+		goto fail;
+
+	lis3_dev.pdata	  = pdata;
+	lis3_dev.bus_priv = client;
+	lis3_dev.init	  = lis3_i2c_init;
+	lis3_dev.read	  = lis3_i2c_read;
+	lis3_dev.write	  = lis3_i2c_write;
+	lis3_dev.irq	  = client->irq;
+	lis3_dev.ac	  = lis3lv02d_axis_map;
+	lis3_dev.pm_dev	  = &client->dev;
+
+	i2c_set_clientdata(client, &lis3_dev);
+
+	/* Provide power over the init call */
+	lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
+
+	ret = lis3lv02d_init_device(&lis3_dev);
+
+	lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
+
+	if (ret)
+		goto fail2;
+	return 0;
+
+fail2:
+	regulator_bulk_free(ARRAY_SIZE(lis3_dev.regulators),
+				lis3_dev.regulators);
+fail:
+	if (pdata && pdata->release_resources)
+		pdata->release_resources();
+	return ret;
+}
+
+static int lis3lv02d_i2c_remove(struct i2c_client *client)
+{
+	struct lis3lv02d *lis3 = i2c_get_clientdata(client);
+	struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
+
+	if (pdata && pdata->release_resources)
+		pdata->release_resources();
+
+	lis3lv02d_joystick_disable(lis3);
+	lis3lv02d_remove_fs(&lis3_dev);
+
+	regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
+			    lis3_dev.regulators);
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int lis3lv02d_i2c_suspend(struct device *dev)
+{
+	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+	struct lis3lv02d *lis3 = i2c_get_clientdata(client);
+
+	if (!lis3->pdata || !lis3->pdata->wakeup_flags)
+		lis3lv02d_poweroff(lis3);
+	return 0;
+}
+
+static int lis3lv02d_i2c_resume(struct device *dev)
+{
+	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+	struct lis3lv02d *lis3 = i2c_get_clientdata(client);
+
+	/*
+	 * pm_runtime documentation says that devices should always
+	 * be powered on at resume. Pm_runtime turns them off after system
+	 * wide resume is complete.
+	 */
+	if (!lis3->pdata || !lis3->pdata->wakeup_flags ||
+		pm_runtime_suspended(dev))
+		lis3lv02d_poweron(lis3);
+
+	return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+#ifdef CONFIG_PM_RUNTIME
+static int lis3_i2c_runtime_suspend(struct device *dev)
+{
+	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+	struct lis3lv02d *lis3 = i2c_get_clientdata(client);
+
+	lis3lv02d_poweroff(lis3);
+	return 0;
+}
+
+static int lis3_i2c_runtime_resume(struct device *dev)
+{
+	struct i2c_client *client = container_of(dev, struct i2c_client, dev);
+	struct lis3lv02d *lis3 = i2c_get_clientdata(client);
+
+	lis3lv02d_poweron(lis3);
+	return 0;
+}
+#endif /* CONFIG_PM_RUNTIME */
+
+static const struct i2c_device_id lis3lv02d_id[] = {
+	{"lis3lv02d", LIS3LV02D},
+	{"lis331dlh", LIS331DLH},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, lis3lv02d_id);
+
+static const struct dev_pm_ops lis3_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(lis3lv02d_i2c_suspend,
+				lis3lv02d_i2c_resume)
+	SET_RUNTIME_PM_OPS(lis3_i2c_runtime_suspend,
+			   lis3_i2c_runtime_resume,
+			   NULL)
+};
+
+static struct i2c_driver lis3lv02d_i2c_driver = {
+	.driver	 = {
+		.name   = DRV_NAME,
+		.owner  = THIS_MODULE,
+		.pm     = &lis3_pm_ops,
+		.of_match_table = of_match_ptr(lis3lv02d_i2c_dt_ids),
+	},
+	.probe	= lis3lv02d_i2c_probe,
+	.remove	= lis3lv02d_i2c_remove,
+	.id_table = lis3lv02d_id,
+};
+
+module_i2c_driver(lis3lv02d_i2c_driver);
+
+MODULE_AUTHOR("Nokia Corporation");
+MODULE_DESCRIPTION("lis3lv02d I2C interface");
+MODULE_LICENSE("GPL");

drivers/misc/lis3lv02d/lis3lv02d_spi.c

@@ -0,0 +1,155 @@
+/*
+ * lis3lv02d_spi - SPI glue layer for lis3lv02d
+ *
+ * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  publishhed by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/spi/spi.h>
+#include <linux/pm.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/of_device.h>
+
+#include "lis3lv02d.h"
+
+#define DRV_NAME 	"lis3lv02d_spi"
+#define LIS3_SPI_READ	0x80
+
+static int lis3_spi_read(struct lis3lv02d *lis3, int reg, u8 *v)
+{
+	struct spi_device *spi = lis3->bus_priv;
+	int ret = spi_w8r8(spi, reg | LIS3_SPI_READ);
+	if (ret < 0)
+		return -EINVAL;
+
+	*v = (u8) ret;
+	return 0;
+}
+
+static int lis3_spi_write(struct lis3lv02d *lis3, int reg, u8 val)
+{
+	u8 tmp[2] = { reg, val };
+	struct spi_device *spi = lis3->bus_priv;
+	return spi_write(spi, tmp, sizeof(tmp));
+}
+
+static int lis3_spi_init(struct lis3lv02d *lis3)
+{
+	u8 reg;
+	int ret;
+
+	/* power up the device */
+	ret = lis3->read(lis3, CTRL_REG1, &reg);
+	if (ret < 0)
+		return ret;
+
+	reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
+	return lis3->write(lis3, CTRL_REG1, reg);
+}
+
+static union axis_conversion lis3lv02d_axis_normal =
+	{ .as_array = { 1, 2, 3 } };
+
+#ifdef CONFIG_OF
+static struct of_device_id lis302dl_spi_dt_ids[] = {
+	{ .compatible = "st,lis302dl-spi" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, lis302dl_spi_dt_ids);
+#endif
+
+static int lis302dl_spi_probe(struct spi_device *spi)
+{
+	int ret;
+
+	spi->bits_per_word = 8;
+	spi->mode = SPI_MODE_0;
+	ret = spi_setup(spi);
+	if (ret < 0)
+		return ret;
+
+	lis3_dev.bus_priv	= spi;
+	lis3_dev.init		= lis3_spi_init;
+	lis3_dev.read		= lis3_spi_read;
+	lis3_dev.write		= lis3_spi_write;
+	lis3_dev.irq		= spi->irq;
+	lis3_dev.ac		= lis3lv02d_axis_normal;
+	lis3_dev.pdata		= spi->dev.platform_data;
+
+#ifdef CONFIG_OF
+	if (of_match_device(lis302dl_spi_dt_ids, &spi->dev)) {
+		lis3_dev.of_node = spi->dev.of_node;
+		ret = lis3lv02d_init_dt(&lis3_dev);
+		if (ret)
+			return ret;
+	}
+#endif
+	spi_set_drvdata(spi, &lis3_dev);
+
+	return lis3lv02d_init_device(&lis3_dev);
+}
+
+static int lis302dl_spi_remove(struct spi_device *spi)
+{
+	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
+	lis3lv02d_joystick_disable(lis3);
+	lis3lv02d_poweroff(lis3);
+
+	return lis3lv02d_remove_fs(&lis3_dev);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int lis3lv02d_spi_suspend(struct device *dev)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
+
+	if (!lis3->pdata || !lis3->pdata->wakeup_flags)
+		lis3lv02d_poweroff(&lis3_dev);
+
+	return 0;
+}
+
+static int lis3lv02d_spi_resume(struct device *dev)
+{
+	struct spi_device *spi = to_spi_device(dev);
+	struct lis3lv02d *lis3 = spi_get_drvdata(spi);
+
+	if (!lis3->pdata || !lis3->pdata->wakeup_flags)
+		lis3lv02d_poweron(lis3);
+
+	return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(lis3lv02d_spi_pm, lis3lv02d_spi_suspend,
+			 lis3lv02d_spi_resume);
+
+static struct spi_driver lis302dl_spi_driver = {
+	.driver	 = {
+		.name   = DRV_NAME,
+		.owner  = THIS_MODULE,
+		.pm	= &lis3lv02d_spi_pm,
+		.of_match_table = of_match_ptr(lis302dl_spi_dt_ids),
+	},
+	.probe	= lis302dl_spi_probe,
+	.remove	= lis302dl_spi_remove,
+};
+
+module_spi_driver(lis302dl_spi_driver);
+
+MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
+MODULE_DESCRIPTION("lis3lv02d SPI glue layer");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("spi:" DRV_NAME);