linux-openmoko-2.6.32: add patches from qtmoko, move defconfig to kernel tree

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

8 files changed, 6666 insertions, 1835 deletions

diff --git a/recipes/linux/linux-openmoko-2.6.32/0017-accels.patch.patch b/recipes/linux/linux-openmoko-2.6.32/0017-accels.patch.patch
new file mode 100644
index 0000000000..16f379d055
--- /dev/null
+++ b/recipes/linux/linux-openmoko-2.6.32/0017-accels.patch.patch
@@ -0,0 +1,1759 @@
+From a08be3ba79daf13baca6de98249c8784ede31297 Mon Sep 17 00:00:00 2001
+From: Radek Polak <psonek2@seznam.cz>
+Date: Fri, 9 Apr 2010 09:15:40 +0200
+Subject: [PATCH 17/22] accels.patch
+
+adds support for accelerometers. You will need include/linux/lis302dl.h and
+drivers/input/misc/lis302dl.c from andy-tracking. The patch needs
+spi_bitbang_transfer_sync() and bitbang_work() to be ported correctly (some
+fixes from original 2.6.32 are missing).
+
+Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
+---
+ arch/arm/mach-s3c2410/include/mach/spi-gpio.h |    3 +-
+ arch/arm/mach-s3c2442/mach-gta02.c            |  157 ++++
+ drivers/input/misc/Kconfig                    |    9 +
+ drivers/input/misc/Makefile                   |    1 +
+ drivers/input/misc/lis302dl.c                 |  952 +++++++++++++++++++++++++
+ drivers/spi/spi_bitbang.c                     |  231 ++++---
+ drivers/spi/spi_s3c24xx_gpio.c                |    7 +-
+ include/linux/lis302dl.h                      |  152 ++++
+ include/linux/spi/spi.h                       |   30 +
+ include/linux/spi/spi_bitbang.h               |    5 +
+ 10 files changed, 1433 insertions(+), 114 deletions(-)
+ create mode 100644 drivers/input/misc/lis302dl.c
+ create mode 100644 include/linux/lis302dl.h
+
+diff --git a/arch/arm/mach-s3c2410/include/mach/spi-gpio.h b/arch/arm/mach-s3c2410/include/mach/spi-gpio.h
+index 980a099..0ff8949 100644
+--- a/arch/arm/mach-s3c2410/include/mach/spi-gpio.h
++++ b/arch/arm/mach-s3c2410/include/mach/spi-gpio.h
+@@ -21,7 +21,8 @@ struct s3c2410_spigpio_info {
+ 	int			 num_chipselect;
+ 	int			 bus_num;
+ 
+-	void (*chip_select)(struct s3c2410_spigpio_info *spi, int cs);
++	int			 non_blocking_transfer;
++	void (*chip_select)(struct s3c2410_spigpio_info *spi, int csid, int cs);
+ };
+ 
+ 
+diff --git a/arch/arm/mach-s3c2442/mach-gta02.c b/arch/arm/mach-s3c2442/mach-gta02.c
+index b580b1b..8e3cc91 100644
+--- a/arch/arm/mach-s3c2442/mach-gta02.c
++++ b/arch/arm/mach-s3c2442/mach-gta02.c
+@@ -63,6 +63,7 @@
+ 
+ #include <linux/input.h>
+ #include <linux/gpio_keys.h>
++#include <linux/lis302dl.h>
+ 
+ #include <linux/leds.h>
+ #include <linux/leds_pwm.h>
+@@ -120,6 +121,22 @@
+ #include <linux/input/touchscreen/ts_filter_group.h>
+ #endif
+ 
++#define S3C2410_GPIONO(bank,offset) ((bank) + (offset))
++
++#define S3C2410_GPIO_BANKD   (32*3)
++#define S3C2410_GPIO_BANKG   (32*6)
++
++#define S3C2410_GPG5          S3C2410_GPIONO(S3C2410_GPIO_BANKG, 5)
++#define S3C2410_GPG6          S3C2410_GPIONO(S3C2410_GPIO_BANKG, 6)
++#define S3C2410_GPG7          S3C2410_GPIONO(S3C2410_GPIO_BANKG, 7)
++#define S3C2410_GPD12         S3C2410_GPIONO(S3C2410_GPIO_BANKD, 12)
++#define S3C2410_GPD13         S3C2410_GPIONO(S3C2410_GPIO_BANKD, 13)
++
++#define	BITBANG_CS_ACTIVE	1	/* normally nCS, active low */
++#define	BITBANG_CS_INACTIVE	0
++
++#define S3C_SYSTEM_REV_ATAG GTA02v6_SYSTEM_REV
++
+ struct pcf50633 *gta02_pcf;
+ 
+ /*
+@@ -776,6 +793,60 @@ const struct jbt6k74_platform_data jbt6k74_pdata = {
+ 	.gpio_reset = GTA02_GPIO_GLAMO(4),
+ };
+ 
++/*----------- SPI: Accelerometers attached to SPI of s3c244x ----------------- */
++
++void gta02_lis302dl_suspend_io(struct lis302dl_info *lis, int resume)
++{
++	struct lis302dl_platform_data *pdata = lis->pdata;
++
++	if (!resume) {
++		 /*
++		 * we don't want to power them with a high level
++		 * because GSENSOR_3V3 is not up during suspend
++		 */
++		s3c2410_gpio_setpin(pdata->pin_chip_select, 0);
++		s3c2410_gpio_setpin(pdata->pin_clk, 0);
++		s3c2410_gpio_setpin(pdata->pin_mosi, 0);
++		/* misnomer: it is a pullDOWN in 2442 */
++		s3c2410_gpio_pullup(pdata->pin_miso, 1);
++		return;
++	}
++
++	/* back to normal */
++	s3c2410_gpio_setpin(pdata->pin_chip_select, 1);
++	s3c2410_gpio_setpin(pdata->pin_clk, 1);
++	/* misnomer: it is a pullDOWN in 2442 */
++	s3c2410_gpio_pullup(pdata->pin_miso, 0);
++
++	s3c2410_gpio_cfgpin(pdata->pin_chip_select, S3C2410_GPIO_OUTPUT);
++	s3c2410_gpio_cfgpin(pdata->pin_clk, S3C2410_GPIO_OUTPUT);
++	s3c2410_gpio_cfgpin(pdata->pin_mosi, S3C2410_GPIO_OUTPUT);
++	s3c2410_gpio_cfgpin(pdata->pin_miso, S3C2410_GPIO_INPUT);
++
++}
++
++struct lis302dl_platform_data lis302_pdata_top = {
++		.name		= "lis302-1 (top)",
++		.pin_chip_select= S3C2410_GPD12,
++		.pin_clk	= S3C2410_GPG7,
++		.pin_mosi	= S3C2410_GPG6,
++		.pin_miso	= S3C2410_GPG5,
++		.interrupt	= GTA02_IRQ_GSENSOR_1,
++		.open_drain	= 1, /* altered at runtime by PCB rev */
++		.lis302dl_suspend_io = gta02_lis302dl_suspend_io,
++};
++
++struct lis302dl_platform_data lis302_pdata_bottom = {
++		.name		= "lis302-2 (bottom)",
++		.pin_chip_select= S3C2410_GPD13,
++		.pin_clk	= S3C2410_GPG7,
++		.pin_mosi	= S3C2410_GPG6,
++		.pin_miso	= S3C2410_GPG5,
++		.interrupt	= GTA02_IRQ_GSENSOR_2,
++		.open_drain	= 1, /* altered at runtime by PCB rev */
++		.lis302dl_suspend_io = gta02_lis302dl_suspend_io,
++};
++
+ static struct spi_board_info gta02_spi_board_info[] = {
+ 	{
+ 		.modalias	= "jbt6k74",
+@@ -786,6 +857,81 @@ static struct spi_board_info gta02_spi_board_info[] = {
+ 		.bus_num	= 2,
+ 		.chip_select = 0
+ 	},
++	{
++		.modalias	= "lis302dl",
++		/* platform_data */
++		.platform_data	= &lis302_pdata_top,
++		/* controller_data */
++		/* irq */
++		.max_speed_hz	= 100 * 1000,
++		.bus_num	= 3,
++		.chip_select	= 0,
++	},
++	{
++		.modalias	= "lis302dl",
++		/* platform_data */
++		.platform_data	= &lis302_pdata_bottom,
++		/* controller_data */
++		/* irq */
++		.max_speed_hz	= 100 * 1000,
++		.bus_num	= 3,
++		.chip_select	= 1,
++	},
++};
++
++static void gta02_lis302_chip_select(struct s3c2410_spigpio_info *info, int csid, int cs)
++{
++
++	/*
++	 * Huh... "quirk"... CS on this device is not really "CS" like you can
++	 * expect.
++	 *
++	 * When it is 0 it selects SPI interface mode.
++	 * When it is 1 it selects I2C interface mode.
++	 *
++	 * Because we have 2 devices on one interface we have to make sure
++	 * that the "disabled" device (actually in I2C mode) don't think we're
++	 * talking to it.
++	 *
++	 * When we talk to the "enabled" device, the "disabled" device sees
++	 * the clocks as I2C clocks, creating havoc.
++	 *
++	 * I2C sees MOSI going LOW while CLK HIGH as a START action, thus we
++	 * must ensure this is never issued.
++	 */
++
++	int cs_gpio, other_cs_gpio;
++
++	cs_gpio = csid ? S3C2410_GPD13 : S3C2410_GPD12;
++	other_cs_gpio = (1 - csid) ? S3C2410_GPD13 : S3C2410_GPD12;
++
++
++	if (cs == BITBANG_CS_ACTIVE) {
++		s3c2410_gpio_setpin(other_cs_gpio, 1);
++		s3c2410_gpio_setpin(cs_gpio, 1);
++		s3c2410_gpio_setpin(info->pin_clk, 1);
++		s3c2410_gpio_setpin(cs_gpio, 0);
++	} else {
++		s3c2410_gpio_setpin(cs_gpio, 1);
++		s3c2410_gpio_setpin(other_cs_gpio, 1);
++	}
++}
++
++static struct s3c2410_spigpio_info gta02_spigpio_cfg = {
++	.pin_clk	= S3C2410_GPG7,
++	.pin_mosi	= S3C2410_GPG6,
++	.pin_miso	= S3C2410_GPG5,
++	.bus_num	= 3,
++	.num_chipselect	= 2,
++	.chip_select	= gta02_lis302_chip_select,
++	.non_blocking_transfer = 1,
++};
++
++static struct platform_device gta02_spi_gpio_dev = {
++	.name		= "spi_s3c24xx_gpio",
++	.dev = {
++		.platform_data = &gta02_spigpio_cfg,
++	},
+ };
+ 
+ /* BQ27000 Battery */
+@@ -1136,6 +1282,7 @@ static struct platform_device *gta02_devices[] __initdata = {
+ static struct platform_device *gta02_devices_pmu_children[] = {
+ 	&s3c_device_ts,
+ 	&gta02_glamo_dev,
++	&gta02_spi_gpio_dev,
+ 	&s3c_device_timer[2],
+ 	&gta02_hdq_device,
+ 	&gta02_gps_userspace_consumer
+@@ -1362,6 +1509,16 @@ static void __init gta02_machine_init(void)
+ 	/* Set the panic callback to make AUX LED blink at ~5Hz. */
+ 	panic_blink = gta02_panic_blink;
+ 
++	switch (S3C_SYSTEM_REV_ATAG) {
++	case GTA02v6_SYSTEM_REV:
++		/* we need push-pull interrupt from motion sensors */
++		lis302_pdata_top.open_drain = 0;
++		lis302_pdata_bottom.open_drain = 0;
++		break;
++	default:
++		break;
++	}
++
+ 	s3c_device_ts.name = "s3c2440-ts";
+ 
+ 	bus_register_notifier(&platform_bus_type, &gta02_device_register_notifier);
+diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
+index a9bb254..2e9bc5d 100644
+--- a/drivers/input/misc/Kconfig
++++ b/drivers/input/misc/Kconfig
+@@ -317,4 +317,13 @@ config INPUT_PCAP
+ 	  To compile this driver as a module, choose M here: the
+ 	  module will be called pcap_keys.
+ 
++config INPUT_LIS302DL
++	tristate "STmicro LIS302DL 3-axis accelerometer"
++	depends on SPI_MASTER
++	help
++	  SPI driver for the STmicro LIS302DL 3-axis accelerometer.
++
++	  The userspece interface is a 3-axis (X/Y/Z) relative movement
++	  Linux input device, reporting REL_[XYZ] events.
++
+ endif
+diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
+index a8b8485..7e63293 100644
+--- a/drivers/input/misc/Makefile
++++ b/drivers/input/misc/Makefile
+@@ -30,4 +30,5 @@ obj-$(CONFIG_INPUT_WINBOND_CIR)		+= winbond-cir.o
+ obj-$(CONFIG_INPUT_WISTRON_BTNS)	+= wistron_btns.o
+ obj-$(CONFIG_INPUT_WM831X_ON)		+= wm831x-on.o
+ obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o
++obj-$(CONFIG_INPUT_LIS302DL)		+= lis302dl.o
+ 
+diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
+new file mode 100644
+index 0000000..d345bfb
+--- /dev/null
++++ b/drivers/input/misc/lis302dl.c
+@@ -0,0 +1,952 @@
++/* Linux kernel driver for the ST LIS302D 3-axis accelerometer
++ *
++ * Copyright (C) 2007-2008 by Openmoko, Inc.
++ * Author: Harald Welte <laforge@openmoko.org>
++ *         converted to private bitbang by:
++ *         Andy Green <andy@openmoko.com>
++ *         ability to set acceleration threshold added by:
++ *         Simon Kagstrom <simon.kagstrom@gmail.com>
++ * All rights reserved.
++ *
++ * 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
++ *
++ * TODO
++ * 	* statistics for overflow events
++ * 	* configuration interface (sysfs) for
++ * 		* enable/disable x/y/z axis data ready
++ * 		* enable/disable resume from freee fall / click
++ * 		* free fall / click parameters
++ * 		* high pass filter parameters
++ */
++#include <linux/kernel.h>
++#include <linux/types.h>
++#include <linux/module.h>
++#include <linux/device.h>
++#include <linux/platform_device.h>
++#include <linux/delay.h>
++#include <linux/irq.h>
++#include <linux/interrupt.h>
++#include <linux/sysfs.h>
++#include <linux/spi/spi.h>
++
++#include <linux/lis302dl.h>
++
++/* Utility functions */
++static u8 __reg_read(struct lis302dl_info *lis, u8 reg)
++{
++	struct spi_message msg;
++	struct spi_transfer t;
++	u8 data[2] = {0xc0 | reg};
++	int rc;
++
++	spi_message_init(&msg);
++	memset(&t, 0, sizeof t);
++	t.len = 2;
++	spi_message_add_tail(&t, &msg);
++	t.tx_buf = &data[0];
++	t.rx_buf = &data[0];
++
++	/* Should complete without blocking */
++	rc = spi_non_blocking_transfer(lis->spi, &msg);
++	if (rc < 0) {
++		dev_err(lis->dev, "Error reading register\n");
++		return rc;
++	}
++
++	return data[1];
++}
++
++static void __reg_write(struct lis302dl_info *lis, u8 reg, u8 val)
++{	
++	struct spi_message msg;
++	struct spi_transfer t;
++	u8 data[2] = {reg, val};
++
++	spi_message_init(&msg);
++	memset(&t, 0, sizeof t);
++	t.len = 2;
++	spi_message_add_tail(&t, &msg);
++	t.tx_buf = &data[0];
++	t.rx_buf = &data[0];
++
++	/* Completes without blocking */
++	if (spi_non_blocking_transfer(lis->spi, &msg) < 0)
++		dev_err(lis->dev, "Error writing register\n");
++}
++
++static void __reg_set_bit_mask(struct lis302dl_info *lis, u8 reg, u8 mask,
++		u8 val)
++{
++	u_int8_t tmp;
++
++	val &= mask;
++
++	tmp = __reg_read(lis, reg);
++	tmp &= ~mask;
++	tmp |= val;
++	__reg_write(lis, reg, tmp);
++}
++
++static int __ms_to_duration(struct lis302dl_info *lis, int ms)
++{
++	/* If we have 400 ms sampling rate, the stepping is 2.5 ms,
++	 * on 100 ms the stepping is 10ms */
++	if (lis->flags & LIS302DL_F_DR)
++		return min((ms * 10) / 25, 637);
++
++	return min(ms / 10, 2550);
++}
++
++static int __duration_to_ms(struct lis302dl_info *lis, int duration)
++{
++	if (lis->flags & LIS302DL_F_DR)
++		return (duration * 25) / 10;
++
++	return duration * 10;
++}
++
++static u8 __mg_to_threshold(struct lis302dl_info *lis, int mg)
++{
++	/* If FS is set each bit is 71mg, otherwise 18mg. The THS register
++	 * has 7 bits for the threshold value */
++	if (lis->flags & LIS302DL_F_FS)
++		return min(mg / 71, 127);
++
++	return min(mg / 18, 127);
++}
++
++static int __threshold_to_mg(struct lis302dl_info *lis, u8 threshold)
++{
++	if (lis->flags & LIS302DL_F_FS)
++		return threshold * 71;
++
++	return threshold * 18;
++}
++
++/* interrupt handling related */
++
++enum lis302dl_intmode {
++	LIS302DL_INTMODE_GND		= 0x00,
++	LIS302DL_INTMODE_FF_WU_1	= 0x01,
++	LIS302DL_INTMODE_FF_WU_2	= 0x02,
++	LIS302DL_INTMODE_FF_WU_12	= 0x03,
++	LIS302DL_INTMODE_DATA_READY	= 0x04,
++	LIS302DL_INTMODE_CLICK		= 0x07,
++};
++
++static void __lis302dl_int_mode(struct device *dev, int int_pin,
++			      enum lis302dl_intmode mode)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++	switch (int_pin) {
++	case 1:
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL3, 0x07, mode);
++		break;
++	case 2:
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL3, 0x38, mode << 3);
++		break;
++	default:
++		BUG();
++	}
++}
++
++static void __enable_wakeup(struct lis302dl_info *lis)
++{
++	__reg_write(lis, LIS302DL_REG_CTRL1, 0);
++
++	/* First zero to get to a known state */
++	__reg_write(lis, LIS302DL_REG_FF_WU_CFG_1, LIS302DL_FFWUCFG_XHIE |
++			LIS302DL_FFWUCFG_YHIE | LIS302DL_FFWUCFG_ZHIE |
++			LIS302DL_FFWUCFG_LIR);
++	__reg_write(lis, LIS302DL_REG_FF_WU_THS_1,
++			__mg_to_threshold(lis, lis->wakeup.threshold));
++	__reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1,
++			__ms_to_duration(lis, lis->wakeup.duration));
++
++	/* Route the interrupt for wakeup */
++	__lis302dl_int_mode(lis->dev, 1,
++			LIS302DL_INTMODE_FF_WU_1);
++
++	__reg_read(lis, LIS302DL_REG_HP_FILTER_RESET);
++	__reg_read(lis, LIS302DL_REG_OUT_X);
++	__reg_read(lis, LIS302DL_REG_OUT_Y);
++	__reg_read(lis, LIS302DL_REG_OUT_Z);
++	__reg_read(lis, LIS302DL_REG_STATUS);
++	__reg_read(lis, LIS302DL_REG_FF_WU_SRC_1);
++	__reg_read(lis, LIS302DL_REG_FF_WU_SRC_2);
++	__reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_PD | 7);
++}
++
++static void __enable_data_collection(struct lis302dl_info *lis)
++{
++	u_int8_t ctrl1 = LIS302DL_CTRL1_PD | LIS302DL_CTRL1_Xen |
++			 LIS302DL_CTRL1_Yen | LIS302DL_CTRL1_Zen;
++
++	/* make sure we're powered up and generate data ready */
++	__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, ctrl1, ctrl1);
++
++	/* If the threshold is zero, let the device generated an interrupt
++	 * on each datum */
++	if (lis->threshold == 0) {
++		__reg_write(lis, LIS302DL_REG_CTRL2, 0);
++		__lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_DATA_READY);
++		__lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_DATA_READY);
++	} else {
++		__reg_write(lis, LIS302DL_REG_CTRL2,
++				LIS302DL_CTRL2_HPFF1);
++		__reg_write(lis, LIS302DL_REG_FF_WU_THS_1,
++				__mg_to_threshold(lis, lis->threshold));
++		__reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1,
++				__ms_to_duration(lis, lis->duration));
++
++		/* Clear the HP filter "starting point" */
++		__reg_read(lis, LIS302DL_REG_HP_FILTER_RESET);
++		__reg_write(lis, LIS302DL_REG_FF_WU_CFG_1,
++				LIS302DL_FFWUCFG_XHIE | LIS302DL_FFWUCFG_YHIE |
++				LIS302DL_FFWUCFG_ZHIE | LIS302DL_FFWUCFG_LIR);
++		__lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_FF_WU_12);
++		__lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_FF_WU_12);
++	}
++}
++
++#if 0
++static void _report_btn_single(struct input_dev *inp, int btn)
++{
++	input_report_key(inp, btn, 1);
++	input_sync(inp);
++	input_report_key(inp, btn, 0);
++}
++
++static void _report_btn_double(struct input_dev *inp, int btn)
++{
++	input_report_key(inp, btn, 1);
++	input_sync(inp);
++	input_report_key(inp, btn, 0);
++	input_sync(inp);
++	input_report_key(inp, btn, 1);
++	input_sync(inp);
++	input_report_key(inp, btn, 0);
++}
++#endif
++
++
++static void lis302dl_bitbang_read_sample(struct lis302dl_info *lis)
++{
++	u8 data[(LIS302DL_REG_OUT_Z - LIS302DL_REG_STATUS) + 2] = {0xC0 | LIS302DL_REG_STATUS};
++	u8 *read = data + 1;
++	unsigned long flags;
++	int mg_per_sample = __threshold_to_mg(lis, 1);
++	struct spi_message msg;
++	struct spi_transfer t;
++
++	spi_message_init(&msg);
++	memset(&t, 0, sizeof t);
++	t.len = sizeof(data);
++	spi_message_add_tail(&t, &msg);
++	t.tx_buf = &data[0];
++	t.rx_buf = &data[0];
++
++	/* grab the set of register containing status and XYZ data */
++
++	local_irq_save(flags);
++
++	/* Should complete without blocking */
++	if (spi_non_blocking_transfer(lis->spi, &msg) < 0) 
++		dev_err(lis->dev, "Error reading registers\n");
++
++	local_irq_restore(flags);
++
++	/*
++	 * at the minute the test below fails 50% of the time due to
++	 * a problem with level interrupts causing ISRs to get called twice.
++	 * This is a workaround for that, but actually this test is still
++	 * valid and the information can be used for overrrun stats.
++	 */
++
++	/* has any kind of overrun been observed by the lis302dl? */
++	if (read[0] & (LIS302DL_STATUS_XOR |
++		       LIS302DL_STATUS_YOR |
++		       LIS302DL_STATUS_ZOR))
++		lis->overruns++;
++
++	/* we have a valid sample set? */
++	if (read[0] & LIS302DL_STATUS_XYZDA) {
++		input_report_abs(lis->input_dev, ABS_X, mg_per_sample *
++			    (s8)read[LIS302DL_REG_OUT_X - LIS302DL_REG_STATUS]);
++		input_report_abs(lis->input_dev, ABS_Y, mg_per_sample *
++			    (s8)read[LIS302DL_REG_OUT_Y - LIS302DL_REG_STATUS]);
++		input_report_abs(lis->input_dev, ABS_Z, mg_per_sample *
++			    (s8)read[LIS302DL_REG_OUT_Z - LIS302DL_REG_STATUS]);
++
++		input_sync(lis->input_dev);
++	}
++
++	if (lis->threshold)
++		/* acknowledge the wakeup source */
++		__reg_read(lis,	LIS302DL_REG_FF_WU_SRC_1);
++}
++
++static irqreturn_t lis302dl_interrupt(int irq, void *_lis)
++{
++	struct lis302dl_info *lis = _lis;
++
++	lis302dl_bitbang_read_sample(lis);
++	return IRQ_HANDLED;
++}
++
++/* sysfs */
++
++static ssize_t show_overruns(struct device *dev, struct device_attribute *attr,
++			 char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++	return sprintf(buf, "%u\n", lis->overruns);
++}
++
++static DEVICE_ATTR(overruns, S_IRUGO, show_overruns, NULL);
++
++static ssize_t show_rate(struct device *dev, struct device_attribute *attr,
++			 char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	u8 ctrl1;
++	unsigned long flags;
++
++	local_irq_save(flags);
++	ctrl1 = __reg_read(lis, LIS302DL_REG_CTRL1);
++	local_irq_restore(flags);
++
++	return sprintf(buf, "%d\n", ctrl1 & LIS302DL_CTRL1_DR ? 400 : 100);
++}
++
++static ssize_t set_rate(struct device *dev, struct device_attribute *attr,
++			const char *buf, size_t count)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	unsigned long flags;
++
++	local_irq_save(flags);
++
++	if (!strcmp(buf, "400\n")) {
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_DR,
++				 LIS302DL_CTRL1_DR);
++		lis->flags |= LIS302DL_F_DR;
++	} else {
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_DR,
++				0);
++		lis->flags &= ~LIS302DL_F_DR;
++	}
++	local_irq_restore(flags);
++
++	return count;
++}
++
++static DEVICE_ATTR(sample_rate, S_IRUGO | S_IWUSR, show_rate, set_rate);
++
++static ssize_t show_scale(struct device *dev, struct device_attribute *attr,
++			  char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	u_int8_t ctrl1;
++	unsigned long flags;
++
++	local_irq_save(flags);
++	ctrl1 = __reg_read(lis, LIS302DL_REG_CTRL1);
++	local_irq_restore(flags);
++
++	return sprintf(buf, "%s\n", ctrl1 & LIS302DL_CTRL1_FS ? "9.2" : "2.3");
++}
++
++static ssize_t set_scale(struct device *dev, struct device_attribute *attr,
++			 const char *buf, size_t count)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	unsigned long flags;
++
++	local_irq_save(flags);
++
++	if (!strcmp(buf, "9.2\n")) {
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_FS,
++				 LIS302DL_CTRL1_FS);
++		lis->flags |= LIS302DL_F_FS;
++	} else {
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_FS,
++				0);
++		lis->flags &= ~LIS302DL_F_FS;
++	}
++
++	if (lis->flags & LIS302DL_F_INPUT_OPEN)
++		__enable_data_collection(lis);
++
++	local_irq_restore(flags);
++
++	return count;
++}
++
++static DEVICE_ATTR(full_scale, S_IRUGO | S_IWUSR, show_scale, set_scale);
++
++static ssize_t show_threshold(struct device *dev, struct device_attribute *attr,
++		 char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++	/* Display the device view of the threshold setting */
++	return sprintf(buf, "%d\n", __threshold_to_mg(lis,
++			__mg_to_threshold(lis, lis->threshold)));
++}
++
++static ssize_t set_threshold(struct device *dev, struct device_attribute *attr,
++		 const char *buf, size_t count)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	unsigned int val;
++
++	if (sscanf(buf, "%u\n", &val) != 1)
++		return -EINVAL;
++	/* 8g is the maximum if FS is 1 */
++	if (val > 8000)
++		return -ERANGE;
++
++	/* Set the threshold and write it out if the device is used */
++	lis->threshold = val;
++
++	if (lis->flags & LIS302DL_F_INPUT_OPEN) {
++		unsigned long flags;
++
++		local_irq_save(flags);
++		__enable_data_collection(lis);
++		local_irq_restore(flags);
++	}
++
++	return count;
++}
++
++static DEVICE_ATTR(threshold, S_IRUGO | S_IWUSR, show_threshold, set_threshold);
++
++static ssize_t show_duration(struct device *dev, struct device_attribute *attr,
++		 char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++	return sprintf(buf, "%d\n", __duration_to_ms(lis,
++			__ms_to_duration(lis, lis->duration)));
++}
++
++static ssize_t set_duration(struct device *dev, struct device_attribute *attr,
++		 const char *buf, size_t count)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	unsigned int val;
++
++	if (sscanf(buf, "%u\n", &val) != 1)
++		return -EINVAL;
++	if (val > 2550)
++		return -ERANGE;
++
++	lis->duration = val;
++	if (lis->flags & LIS302DL_F_INPUT_OPEN)
++		__reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1,
++				__ms_to_duration(lis, lis->duration));
++
++	return count;
++}
++
++static DEVICE_ATTR(duration, S_IRUGO | S_IWUSR, show_duration, set_duration);
++
++static ssize_t lis302dl_dump(struct device *dev, struct device_attribute *attr,
++								      char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	int n = 0;
++	u8 reg[0x40];
++	char *end = buf;
++	unsigned long flags;
++
++	local_irq_save(flags);
++
++	for (n = 0; n < sizeof(reg); n++)
++		reg[n] = __reg_read(lis, n);
++
++	local_irq_restore(flags);
++
++	for (n = 0; n < sizeof(reg); n += 16) {
++		hex_dump_to_buffer(reg + n, 16, 16, 1, end, 128, 0);
++		end += strlen(end);
++		*end++ = '\n';
++		*end++ = '\0';
++	}
++
++	return end - buf;
++}
++static DEVICE_ATTR(dump, S_IRUGO, lis302dl_dump, NULL);
++
++/* Configure freefall/wakeup interrupts */
++static ssize_t set_wakeup_threshold(struct device *dev,
++		struct device_attribute *attr, const char *buf, size_t count)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	unsigned int threshold;
++
++	if (sscanf(buf, "%u\n", &threshold) != 1)
++		return -EINVAL;
++
++	if (threshold > 8000)
++		return -ERANGE;
++
++	/* Zero turns the feature off */
++	if (threshold == 0) {
++		if (lis->flags & LIS302DL_F_IRQ_WAKE) {
++			disable_irq_wake(lis->pdata->interrupt);
++			lis->flags &= ~LIS302DL_F_IRQ_WAKE;
++		}
++
++		return count;
++	}
++
++	lis->wakeup.threshold = threshold;
++
++	if (!(lis->flags & LIS302DL_F_IRQ_WAKE)) {
++		enable_irq_wake(lis->pdata->interrupt);
++		lis->flags |= LIS302DL_F_IRQ_WAKE;
++	}
++
++	return count;
++}
++
++static ssize_t show_wakeup_threshold(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++	/* All events off? */
++	if (lis->wakeup.threshold == 0)
++		return sprintf(buf, "off\n");
++
++	return sprintf(buf, "%u\n", lis->wakeup.threshold);
++}
++
++static DEVICE_ATTR(wakeup_threshold, S_IRUGO | S_IWUSR, show_wakeup_threshold,
++		set_wakeup_threshold);
++
++static ssize_t set_wakeup_duration(struct device *dev,
++		struct device_attribute *attr, const char *buf, size_t count)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++	unsigned int duration;
++
++	if (sscanf(buf, "%u\n", &duration) != 1)
++		return -EINVAL;
++
++	if (duration > 2550)
++		return -ERANGE;
++
++	lis->wakeup.duration = duration;
++
++	return count;
++}
++
++static ssize_t show_wakeup_duration(struct device *dev,
++		struct device_attribute *attr, char *buf)
++{
++	struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++	return sprintf(buf, "%u\n", lis->wakeup.duration);
++}
++
++static DEVICE_ATTR(wakeup_duration, S_IRUGO | S_IWUSR, show_wakeup_duration,
++		set_wakeup_duration);
++
++static struct attribute *lis302dl_sysfs_entries[] = {
++	&dev_attr_sample_rate.attr,
++	&dev_attr_full_scale.attr,
++	&dev_attr_threshold.attr,
++	&dev_attr_duration.attr,
++	&dev_attr_dump.attr,
++	&dev_attr_wakeup_threshold.attr,
++	&dev_attr_wakeup_duration.attr,
++	&dev_attr_overruns.attr,
++	NULL
++};
++
++static struct attribute_group lis302dl_attr_group = {
++	.name	= NULL,
++	.attrs	= lis302dl_sysfs_entries,
++};
++
++/* input device handling and driver core interaction */
++
++static int lis302dl_input_open(struct input_dev *inp)
++{
++	struct lis302dl_info *lis = input_get_drvdata(inp);
++	unsigned long flags;
++
++	local_irq_save(flags);
++
++	__enable_data_collection(lis);
++	lis->flags |= LIS302DL_F_INPUT_OPEN;
++
++	local_irq_restore(flags);
++
++	return 0;
++}
++
++static void lis302dl_input_close(struct input_dev *inp)
++{
++	struct lis302dl_info *lis = input_get_drvdata(inp);
++	u_int8_t ctrl1 = LIS302DL_CTRL1_Xen | LIS302DL_CTRL1_Yen |
++			 LIS302DL_CTRL1_Zen;
++	unsigned long flags;
++
++	local_irq_save(flags);
++
++	/* since the input core already serializes access and makes sure we
++	 * only see close() for the close of the last user, we can safely
++	 * disable the data ready events */
++	__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, ctrl1, 0x00);
++	lis->flags &= ~LIS302DL_F_INPUT_OPEN;
++
++	/* however, don't power down the whole device if still needed */
++	if (!(lis->flags & LIS302DL_F_WUP_FF ||
++	      lis->flags & LIS302DL_F_WUP_CLICK)) {
++		__reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_PD,
++				 0x00);
++	}
++	local_irq_restore(flags);
++}
++
++/* get the device to reload its coefficients from EEPROM and wait for it
++ * to complete
++ */
++
++static int __lis302dl_reset_device(struct lis302dl_info *lis)
++{
++	int timeout = 10;
++
++	__reg_write(lis, LIS302DL_REG_CTRL2,
++			LIS302DL_CTRL2_BOOT | LIS302DL_CTRL2_FDS);
++
++	while ((__reg_read(lis, LIS302DL_REG_CTRL2)
++			& LIS302DL_CTRL2_BOOT) && (timeout--))
++		mdelay(1);
++
++	return !!(timeout < 0);
++}
++
++static int __devinit lis302dl_probe(struct spi_device *spi)
++{
++	int rc;
++	struct lis302dl_info *lis;
++	u_int8_t wai;
++	unsigned long flags;
++	struct lis302dl_platform_data *pdata = spi->dev.platform_data;
++
++	spi->mode = SPI_MODE_3;
++	rc = spi_setup(spi);
++	if (rc < 0) {
++		dev_err(&spi->dev, "spi_setup failed\n");
++		return rc;
++	}
++
++	lis = kzalloc(sizeof(*lis), GFP_KERNEL);
++	if (!lis)
++		return -ENOMEM;
++
++	lis->dev = &spi->dev;
++	lis->spi = spi;
++
++	dev_set_drvdata(lis->dev, lis);
++
++	lis->pdata = pdata;
++
++	rc = sysfs_create_group(&lis->dev->kobj, &lis302dl_attr_group);
++	if (rc) {
++		dev_err(lis->dev, "error creating sysfs group\n");
++		goto bail_free_lis;
++	}
++
++	/* initialize input layer details */
++	lis->input_dev = input_allocate_device();
++	if (!lis->input_dev) {
++		dev_err(lis->dev, "Unable to allocate input device\n");
++		goto bail_sysfs;
++	}
++
++	input_set_drvdata(lis->input_dev, lis);
++	lis->input_dev->name = pdata->name;
++	 /* SPI Bus not defined as a valid bus for input subsystem*/
++	lis->input_dev->id.bustype = BUS_I2C; /* lie about it */
++	lis->input_dev->open = lis302dl_input_open;
++	lis->input_dev->close = lis302dl_input_close;
++
++	rc = input_register_device(lis->input_dev);
++	if (rc) {
++		dev_err(lis->dev, "error %d registering input device\n", rc);
++		goto bail_inp_dev;
++	}
++
++	local_irq_save(flags);
++	/* Configure our IO */
++	(lis->pdata->lis302dl_suspend_io)(lis, 1);
++
++	wai = __reg_read(lis, LIS302DL_REG_WHO_AM_I);
++	if (wai != LIS302DL_WHO_AM_I_MAGIC) {
++		dev_err(lis->dev, "unknown who_am_i signature 0x%02x\n", wai);
++		dev_set_drvdata(lis->dev, NULL);
++		rc = -ENODEV;
++		local_irq_restore(flags);
++		goto bail_inp_reg;
++	}
++
++	set_bit(EV_ABS, lis->input_dev->evbit);
++	input_set_abs_params(lis->input_dev, ABS_X, 0, 0, 0, 0);
++	input_set_abs_params(lis->input_dev, ABS_Y, 0, 0, 0, 0);
++	input_set_abs_params(lis->input_dev, ABS_Z, 0, 0, 0, 0);
++	
++
++	lis->threshold = 0;
++	lis->duration = 0;
++	memset(&lis->wakeup, 0, sizeof(lis->wakeup));
++
++	if (__lis302dl_reset_device(lis))
++		dev_err(lis->dev, "device BOOT reload failed\n");
++
++	/* force us powered */
++	__reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_PD |
++			LIS302DL_CTRL1_Xen |
++			LIS302DL_CTRL1_Yen |
++			LIS302DL_CTRL1_Zen);
++	mdelay(1);
++
++	__reg_write(lis, LIS302DL_REG_CTRL2, 0);
++	__reg_write(lis, LIS302DL_REG_CTRL3,
++			LIS302DL_CTRL3_PP_OD | LIS302DL_CTRL3_IHL);
++	__reg_write(lis, LIS302DL_REG_FF_WU_THS_1, 0x0);
++	__reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1, 0x00);
++	__reg_write(lis, LIS302DL_REG_FF_WU_CFG_1, 0x0);
++
++	/* start off in powered down mode; we power up when someone opens us */
++	__reg_write(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_Xen |
++			LIS302DL_CTRL1_Yen | LIS302DL_CTRL1_Zen);
++
++	if (pdata->open_drain)
++		/* switch interrupt to open collector, active-low */
++		__reg_write(lis, LIS302DL_REG_CTRL3,
++				LIS302DL_CTRL3_PP_OD | LIS302DL_CTRL3_IHL);
++	else
++		/* push-pull, active-low */
++		__reg_write(lis, LIS302DL_REG_CTRL3, LIS302DL_CTRL3_IHL);
++
++	__lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_GND);
++	__lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_GND);
++
++	__reg_read(lis, LIS302DL_REG_STATUS);
++	__reg_read(lis, LIS302DL_REG_FF_WU_SRC_1);
++	__reg_read(lis, LIS302DL_REG_FF_WU_SRC_2);
++	__reg_read(lis, LIS302DL_REG_CLICK_SRC);
++	local_irq_restore(flags);
++
++	dev_info(lis->dev, "Found %s\n", pdata->name);
+