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authorJean Delvare <khali@linux-fr.org>2011-03-21 12:59:36 -0400
committerJean Delvare <khali@endymion.delvare>2011-03-21 12:59:36 -0400
commitff606677f6a47c63329cf8e6c7cf978c29f2d736 (patch)
tree565bcdaa1f5058af0a6fd2260b3c45029c955d08 /drivers/hwmon
parentefcfed9bad88be8193ee6a1b8e72d7381e7b0e0e (diff)
Move lis3lv02d drivers to drivers/misc
The lis3lv02d drivers aren't hardware monitoring drivers, so the don't belong to drivers/hwmon. Move them to drivers/misc, short of a better home. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Eric Piel <eric.piel@tremplin-utc.net> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Tested-by: Eric Piel <eric.piel@tremplin-utc.net> Tested-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/Kconfig40
-rw-r--r--drivers/hwmon/Makefile5
-rw-r--r--drivers/hwmon/lis3lv02d.c1000
-rw-r--r--drivers/hwmon/lis3lv02d.h291
-rw-r--r--drivers/hwmon/lis3lv02d_i2c.c279
-rw-r--r--drivers/hwmon/lis3lv02d_spi.c145
6 files changed, 0 insertions, 1760 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 3f8c895417de..47621abb9a05 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -2,12 +2,6 @@
2# Hardware monitoring chip drivers configuration 2# Hardware monitoring chip drivers configuration
3# 3#
4 4
5config SENSORS_LIS3LV02D
6 tristate
7 depends on INPUT
8 select INPUT_POLLDEV
9 default n
10
11menuconfig HWMON 5menuconfig HWMON
12 tristate "Hardware Monitoring support" 6 tristate "Hardware Monitoring support"
13 depends on HAS_IOMEM 7 depends on HAS_IOMEM
@@ -1221,40 +1215,6 @@ config SENSORS_ULTRA45
1221 This driver provides support for the Ultra45 workstation environmental 1215 This driver provides support for the Ultra45 workstation environmental
1222 sensors. 1216 sensors.
1223 1217
1224config SENSORS_LIS3_SPI
1225 tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (SPI)"
1226 depends on !ACPI && SPI_MASTER && INPUT
1227 select SENSORS_LIS3LV02D
1228 default n
1229 help
1230 This driver provides support for the LIS3LV02Dx accelerometer connected
1231 via SPI. The accelerometer data is readable via
1232 /sys/devices/platform/lis3lv02d.
1233
1234 This driver also provides an absolute input class device, allowing
1235 the laptop to act as a pinball machine-esque joystick.
1236
1237 This driver can also be built as modules. If so, the core module
1238 will be called lis3lv02d and a specific module for the SPI transport
1239 is called lis3lv02d_spi.
1240
1241config SENSORS_LIS3_I2C
1242 tristate "STMicroeletronics LIS3LV02Dx three-axis digital accelerometer (I2C)"
1243 depends on I2C && INPUT
1244 select SENSORS_LIS3LV02D
1245 default n
1246 help
1247 This driver provides support for the LIS3LV02Dx accelerometer connected
1248 via I2C. The accelerometer data is readable via
1249 /sys/devices/platform/lis3lv02d.
1250
1251 This driver also provides an absolute input class device, allowing
1252 the device to act as a pinball machine-esque joystick.
1253
1254 This driver can also be built as modules. If so, the core module
1255 will be called lis3lv02d and a specific module for the I2C transport
1256 is called lis3lv02d_i2c.
1257
1258config SENSORS_APPLESMC 1218config SENSORS_APPLESMC
1259 tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)" 1219 tristate "Apple SMC (Motion sensor, light sensor, keyboard backlight)"
1260 depends on INPUT && X86 1220 depends on INPUT && X86
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 55ba906def74..c068f82082cd 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -5,9 +5,6 @@
5obj-$(CONFIG_HWMON) += hwmon.o 5obj-$(CONFIG_HWMON) += hwmon.o
6obj-$(CONFIG_HWMON_VID) += hwmon-vid.o 6obj-$(CONFIG_HWMON_VID) += hwmon-vid.o
7 7
8# Helper drivers
9obj-$(CONFIG_SENSORS_LIS3LV02D) += lis3lv02d.o
10
11# APCI drivers 8# APCI drivers
12obj-$(CONFIG_SENSORS_ATK0110) += asus_atk0110.o 9obj-$(CONFIG_SENSORS_ATK0110) += asus_atk0110.o
13 10
@@ -66,8 +63,6 @@ obj-$(CONFIG_SENSORS_JZ4740) += jz4740-hwmon.o
66obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o 63obj-$(CONFIG_SENSORS_K8TEMP) += k8temp.o
67obj-$(CONFIG_SENSORS_K10TEMP) += k10temp.o 64obj-$(CONFIG_SENSORS_K10TEMP) += k10temp.o
68obj-$(CONFIG_SENSORS_LINEAGE) += lineage-pem.o 65obj-$(CONFIG_SENSORS_LINEAGE) += lineage-pem.o
69obj-$(CONFIG_SENSORS_LIS3_SPI) += lis3lv02d_spi.o
70obj-$(CONFIG_SENSORS_LIS3_I2C) += lis3lv02d_i2c.o
71obj-$(CONFIG_SENSORS_LM63) += lm63.o 66obj-$(CONFIG_SENSORS_LM63) += lm63.o
72obj-$(CONFIG_SENSORS_LM70) += lm70.o 67obj-$(CONFIG_SENSORS_LM70) += lm70.o
73obj-$(CONFIG_SENSORS_LM73) += lm73.o 68obj-$(CONFIG_SENSORS_LM73) += lm73.o
diff --git a/drivers/hwmon/lis3lv02d.c b/drivers/hwmon/lis3lv02d.c
deleted file mode 100644
index d805e8e57967..000000000000
--- a/drivers/hwmon/lis3lv02d.c
+++ /dev/null
@@ -1,1000 +0,0 @@
1/*
2 * lis3lv02d.c - ST LIS3LV02DL accelerometer driver
3 *
4 * Copyright (C) 2007-2008 Yan Burman
5 * Copyright (C) 2008 Eric Piel
6 * Copyright (C) 2008-2009 Pavel Machek
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
24
25#include <linux/kernel.h>
26#include <linux/init.h>
27#include <linux/dmi.h>
28#include <linux/module.h>
29#include <linux/types.h>
30#include <linux/platform_device.h>
31#include <linux/interrupt.h>
32#include <linux/input-polldev.h>
33#include <linux/delay.h>
34#include <linux/wait.h>
35#include <linux/poll.h>
36#include <linux/slab.h>
37#include <linux/freezer.h>
38#include <linux/uaccess.h>
39#include <linux/miscdevice.h>
40#include <linux/pm_runtime.h>
41#include <asm/atomic.h>
42#include "lis3lv02d.h"
43
44#define DRIVER_NAME "lis3lv02d"
45
46/* joystick device poll interval in milliseconds */
47#define MDPS_POLL_INTERVAL 50
48#define MDPS_POLL_MIN 0
49#define MDPS_POLL_MAX 2000
50
51#define LIS3_SYSFS_POWERDOWN_DELAY 5000 /* In milliseconds */
52
53#define SELFTEST_OK 0
54#define SELFTEST_FAIL -1
55#define SELFTEST_IRQ -2
56
57#define IRQ_LINE0 0
58#define IRQ_LINE1 1
59
60/*
61 * The sensor can also generate interrupts (DRDY) but it's pretty pointless
62 * because they are generated even if the data do not change. So it's better
63 * to keep the interrupt for the free-fall event. The values are updated at
64 * 40Hz (at the lowest frequency), but as it can be pretty time consuming on
65 * some low processor, we poll the sensor only at 20Hz... enough for the
66 * joystick.
67 */
68
69#define LIS3_PWRON_DELAY_WAI_12B (5000)
70#define LIS3_PWRON_DELAY_WAI_8B (3000)
71
72/*
73 * LIS3LV02D spec says 1024 LSBs corresponds 1 G -> 1LSB is 1000/1024 mG
74 * LIS302D spec says: 18 mG / digit
75 * LIS3_ACCURACY is used to increase accuracy of the intermediate
76 * calculation results.
77 */
78#define LIS3_ACCURACY 1024
79/* Sensitivity values for -2G +2G scale */
80#define LIS3_SENSITIVITY_12B ((LIS3_ACCURACY * 1000) / 1024)
81#define LIS3_SENSITIVITY_8B (18 * LIS3_ACCURACY)
82
83#define LIS3_DEFAULT_FUZZ_12B 3
84#define LIS3_DEFAULT_FLAT_12B 3
85#define LIS3_DEFAULT_FUZZ_8B 1
86#define LIS3_DEFAULT_FLAT_8B 1
87
88struct lis3lv02d lis3_dev = {
89 .misc_wait = __WAIT_QUEUE_HEAD_INITIALIZER(lis3_dev.misc_wait),
90};
91
92EXPORT_SYMBOL_GPL(lis3_dev);
93
94/* just like param_set_int() but does sanity-check so that it won't point
95 * over the axis array size
96 */
97static int param_set_axis(const char *val, const struct kernel_param *kp)
98{
99 int ret = param_set_int(val, kp);
100 if (!ret) {
101 int val = *(int *)kp->arg;
102 if (val < 0)
103 val = -val;
104 if (!val || val > 3)
105 return -EINVAL;
106 }
107 return ret;
108}
109
110static struct kernel_param_ops param_ops_axis = {
111 .set = param_set_axis,
112 .get = param_get_int,
113};
114
115module_param_array_named(axes, lis3_dev.ac.as_array, axis, NULL, 0644);
116MODULE_PARM_DESC(axes, "Axis-mapping for x,y,z directions");
117
118static s16 lis3lv02d_read_8(struct lis3lv02d *lis3, int reg)
119{
120 s8 lo;
121 if (lis3->read(lis3, reg, &lo) < 0)
122 return 0;
123
124 return lo;
125}
126
127static s16 lis3lv02d_read_12(struct lis3lv02d *lis3, int reg)
128{
129 u8 lo, hi;
130
131 lis3->read(lis3, reg - 1, &lo);
132 lis3->read(lis3, reg, &hi);
133 /* In "12 bit right justified" mode, bit 6, bit 7, bit 8 = bit 5 */
134 return (s16)((hi << 8) | lo);
135}
136
137/**
138 * lis3lv02d_get_axis - For the given axis, give the value converted
139 * @axis: 1,2,3 - can also be negative
140 * @hw_values: raw values returned by the hardware
141 *
142 * Returns the converted value.
143 */
144static inline int lis3lv02d_get_axis(s8 axis, int hw_values[3])
145{
146 if (axis > 0)
147 return hw_values[axis - 1];
148 else
149 return -hw_values[-axis - 1];
150}
151
152/**
153 * lis3lv02d_get_xyz - Get X, Y and Z axis values from the accelerometer
154 * @lis3: pointer to the device struct
155 * @x: where to store the X axis value
156 * @y: where to store the Y axis value
157 * @z: where to store the Z axis value
158 *
159 * Note that 40Hz input device can eat up about 10% CPU at 800MHZ
160 */
161static void lis3lv02d_get_xyz(struct lis3lv02d *lis3, int *x, int *y, int *z)
162{
163 int position[3];
164 int i;
165
166 if (lis3->blkread) {
167 if (lis3_dev.whoami == WAI_12B) {
168 u16 data[3];
169 lis3->blkread(lis3, OUTX_L, 6, (u8 *)data);
170 for (i = 0; i < 3; i++)
171 position[i] = (s16)le16_to_cpu(data[i]);
172 } else {
173 u8 data[5];
174 /* Data: x, dummy, y, dummy, z */
175 lis3->blkread(lis3, OUTX, 5, data);
176 for (i = 0; i < 3; i++)
177 position[i] = (s8)data[i * 2];
178 }
179 } else {
180 position[0] = lis3->read_data(lis3, OUTX);
181 position[1] = lis3->read_data(lis3, OUTY);
182 position[2] = lis3->read_data(lis3, OUTZ);
183 }
184
185 for (i = 0; i < 3; i++)
186 position[i] = (position[i] * lis3->scale) / LIS3_ACCURACY;
187
188 *x = lis3lv02d_get_axis(lis3->ac.x, position);
189 *y = lis3lv02d_get_axis(lis3->ac.y, position);
190 *z = lis3lv02d_get_axis(lis3->ac.z, position);
191}
192
193/* conversion btw sampling rate and the register values */
194static int lis3_12_rates[4] = {40, 160, 640, 2560};
195static int lis3_8_rates[2] = {100, 400};
196static int lis3_3dc_rates[16] = {0, 1, 10, 25, 50, 100, 200, 400, 1600, 5000};
197
198/* ODR is Output Data Rate */
199static int lis3lv02d_get_odr(void)
200{
201 u8 ctrl;
202 int shift;
203
204 lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
205 ctrl &= lis3_dev.odr_mask;
206 shift = ffs(lis3_dev.odr_mask) - 1;
207 return lis3_dev.odrs[(ctrl >> shift)];
208}
209
210static int lis3lv02d_set_odr(int rate)
211{
212 u8 ctrl;
213 int i, len, shift;
214
215 if (!rate)
216 return -EINVAL;
217
218 lis3_dev.read(&lis3_dev, CTRL_REG1, &ctrl);
219 ctrl &= ~lis3_dev.odr_mask;
220 len = 1 << hweight_long(lis3_dev.odr_mask); /* # of possible values */
221 shift = ffs(lis3_dev.odr_mask) - 1;
222
223 for (i = 0; i < len; i++)
224 if (lis3_dev.odrs[i] == rate) {
225 lis3_dev.write(&lis3_dev, CTRL_REG1,
226 ctrl | (i << shift));
227 return 0;
228 }
229 return -EINVAL;
230}
231
232static int lis3lv02d_selftest(struct lis3lv02d *lis3, s16 results[3])
233{
234 u8 ctlreg, reg;
235 s16 x, y, z;
236 u8 selftest;
237 int ret;
238 u8 ctrl_reg_data;
239 unsigned char irq_cfg;
240
241 mutex_lock(&lis3->mutex);
242
243 irq_cfg = lis3->irq_cfg;
244 if (lis3_dev.whoami == WAI_8B) {
245 lis3->data_ready_count[IRQ_LINE0] = 0;
246 lis3->data_ready_count[IRQ_LINE1] = 0;
247
248 /* Change interrupt cfg to data ready for selftest */
249 atomic_inc(&lis3_dev.wake_thread);
250 lis3->irq_cfg = LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY;
251 lis3->read(lis3, CTRL_REG3, &ctrl_reg_data);
252 lis3->write(lis3, CTRL_REG3, (ctrl_reg_data &
253 ~(LIS3_IRQ1_MASK | LIS3_IRQ2_MASK)) |
254 (LIS3_IRQ1_DATA_READY | LIS3_IRQ2_DATA_READY));
255 }
256
257 if (lis3_dev.whoami == WAI_3DC) {
258 ctlreg = CTRL_REG4;
259 selftest = CTRL4_ST0;
260 } else {
261 ctlreg = CTRL_REG1;
262 if (lis3_dev.whoami == WAI_12B)
263 selftest = CTRL1_ST;
264 else
265 selftest = CTRL1_STP;
266 }
267
268 lis3->read(lis3, ctlreg, &reg);
269 lis3->write(lis3, ctlreg, (reg | selftest));
270 msleep(lis3->pwron_delay / lis3lv02d_get_odr());
271
272 /* Read directly to avoid axis remap */
273 x = lis3->read_data(lis3, OUTX);
274 y = lis3->read_data(lis3, OUTY);
275 z = lis3->read_data(lis3, OUTZ);
276
277 /* back to normal settings */
278 lis3->write(lis3, ctlreg, reg);
279 msleep(lis3->pwron_delay / lis3lv02d_get_odr());
280
281 results[0] = x - lis3->read_data(lis3, OUTX);
282 results[1] = y - lis3->read_data(lis3, OUTY);
283 results[2] = z - lis3->read_data(lis3, OUTZ);
284
285 ret = 0;
286
287 if (lis3_dev.whoami == WAI_8B) {
288 /* Restore original interrupt configuration */
289 atomic_dec(&lis3_dev.wake_thread);
290 lis3->write(lis3, CTRL_REG3, ctrl_reg_data);
291 lis3->irq_cfg = irq_cfg;
292
293 if ((irq_cfg & LIS3_IRQ1_MASK) &&
294 lis3->data_ready_count[IRQ_LINE0] < 2) {
295 ret = SELFTEST_IRQ;
296 goto fail;
297 }
298
299 if ((irq_cfg & LIS3_IRQ2_MASK) &&
300 lis3->data_ready_count[IRQ_LINE1] < 2) {
301 ret = SELFTEST_IRQ;
302 goto fail;
303 }
304 }
305
306 if (lis3->pdata) {
307 int i;
308 for (i = 0; i < 3; i++) {
309 /* Check against selftest acceptance limits */
310 if ((results[i] < lis3->pdata->st_min_limits[i]) ||
311 (results[i] > lis3->pdata->st_max_limits[i])) {
312 ret = SELFTEST_FAIL;
313 goto fail;
314 }
315 }
316 }
317
318 /* test passed */
319fail:
320 mutex_unlock(&lis3->mutex);
321 return ret;
322}
323
324/*
325 * Order of registers in the list affects to order of the restore process.
326 * Perhaps it is a good idea to set interrupt enable register as a last one
327 * after all other configurations
328 */
329static u8 lis3_wai8_regs[] = { FF_WU_CFG_1, FF_WU_THS_1, FF_WU_DURATION_1,
330 FF_WU_CFG_2, FF_WU_THS_2, FF_WU_DURATION_2,
331 CLICK_CFG, CLICK_SRC, CLICK_THSY_X, CLICK_THSZ,
332 CLICK_TIMELIMIT, CLICK_LATENCY, CLICK_WINDOW,
333 CTRL_REG1, CTRL_REG2, CTRL_REG3};
334
335static u8 lis3_wai12_regs[] = {FF_WU_CFG, FF_WU_THS_L, FF_WU_THS_H,
336 FF_WU_DURATION, DD_CFG, DD_THSI_L, DD_THSI_H,
337 DD_THSE_L, DD_THSE_H,
338 CTRL_REG1, CTRL_REG3, CTRL_REG2};
339
340static inline void lis3_context_save(struct lis3lv02d *lis3)
341{
342 int i;
343 for (i = 0; i < lis3->regs_size; i++)
344 lis3->read(lis3, lis3->regs[i], &lis3->reg_cache[i]);
345 lis3->regs_stored = true;
346}
347
348static inline void lis3_context_restore(struct lis3lv02d *lis3)
349{
350 int i;
351 if (lis3->regs_stored)
352 for (i = 0; i < lis3->regs_size; i++)
353 lis3->write(lis3, lis3->regs[i], lis3->reg_cache[i]);
354}
355
356void lis3lv02d_poweroff(struct lis3lv02d *lis3)
357{
358 if (lis3->reg_ctrl)
359 lis3_context_save(lis3);
360 /* disable X,Y,Z axis and power down */
361 lis3->write(lis3, CTRL_REG1, 0x00);
362 if (lis3->reg_ctrl)
363 lis3->reg_ctrl(lis3, LIS3_REG_OFF);
364}
365EXPORT_SYMBOL_GPL(lis3lv02d_poweroff);
366
367void lis3lv02d_poweron(struct lis3lv02d *lis3)
368{
369 u8 reg;
370
371 lis3->init(lis3);
372
373 /*
374 * Common configuration
375 * BDU: (12 bits sensors only) LSB and MSB values are not updated until
376 * both have been read. So the value read will always be correct.
377 * Set BOOT bit to refresh factory tuning values.
378 */
379 lis3->read(lis3, CTRL_REG2, &reg);
380 if (lis3->whoami == WAI_12B)
381 reg |= CTRL2_BDU | CTRL2_BOOT;
382 else
383 reg |= CTRL2_BOOT_8B;
384 lis3->write(lis3, CTRL_REG2, reg);
385
386 /* LIS3 power on delay is quite long */
387 msleep(lis3->pwron_delay / lis3lv02d_get_odr());
388
389 if (lis3->reg_ctrl)
390 lis3_context_restore(lis3);
391}
392EXPORT_SYMBOL_GPL(lis3lv02d_poweron);
393
394
395static void lis3lv02d_joystick_poll(struct input_polled_dev *pidev)
396{
397 int x, y, z;
398
399 mutex_lock(&lis3_dev.mutex);
400 lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
401 input_report_abs(pidev->input, ABS_X, x);
402 input_report_abs(pidev->input, ABS_Y, y);
403 input_report_abs(pidev->input, ABS_Z, z);
404 input_sync(pidev->input);
405 mutex_unlock(&lis3_dev.mutex);
406}
407
408static void lis3lv02d_joystick_open(struct input_polled_dev *pidev)
409{
410 if (lis3_dev.pm_dev)
411 pm_runtime_get_sync(lis3_dev.pm_dev);
412
413 if (lis3_dev.pdata && lis3_dev.whoami == WAI_8B && lis3_dev.idev)
414 atomic_set(&lis3_dev.wake_thread, 1);
415 /*
416 * Update coordinates for the case where poll interval is 0 and
417 * the chip in running purely under interrupt control
418 */
419 lis3lv02d_joystick_poll(pidev);
420}
421
422static void lis3lv02d_joystick_close(struct input_polled_dev *pidev)
423{
424 atomic_set(&lis3_dev.wake_thread, 0);
425 if (lis3_dev.pm_dev)
426 pm_runtime_put(lis3_dev.pm_dev);
427}
428
429static irqreturn_t lis302dl_interrupt(int irq, void *dummy)
430{
431 if (!test_bit(0, &lis3_dev.misc_opened))
432 goto out;
433
434 /*
435 * Be careful: on some HP laptops the bios force DD when on battery and
436 * the lid is closed. This leads to interrupts as soon as a little move
437 * is done.
438 */
439 atomic_inc(&lis3_dev.count);
440
441 wake_up_interruptible(&lis3_dev.misc_wait);
442 kill_fasync(&lis3_dev.async_queue, SIGIO, POLL_IN);
443out:
444 if (atomic_read(&lis3_dev.wake_thread))
445 return IRQ_WAKE_THREAD;
446 return IRQ_HANDLED;
447}
448
449static void lis302dl_interrupt_handle_click(struct lis3lv02d *lis3)
450{
451 struct input_dev *dev = lis3->idev->input;
452 u8 click_src;
453
454 mutex_lock(&lis3->mutex);
455 lis3->read(lis3, CLICK_SRC, &click_src);
456
457 if (click_src & CLICK_SINGLE_X) {
458 input_report_key(dev, lis3->mapped_btns[0], 1);
459 input_report_key(dev, lis3->mapped_btns[0], 0);
460 }
461
462 if (click_src & CLICK_SINGLE_Y) {
463 input_report_key(dev, lis3->mapped_btns[1], 1);
464 input_report_key(dev, lis3->mapped_btns[1], 0);
465 }
466
467 if (click_src & CLICK_SINGLE_Z) {
468 input_report_key(dev, lis3->mapped_btns[2], 1);
469 input_report_key(dev, lis3->mapped_btns[2], 0);
470 }
471 input_sync(dev);
472 mutex_unlock(&lis3->mutex);
473}
474
475static inline void lis302dl_data_ready(struct lis3lv02d *lis3, int index)
476{
477 int dummy;
478
479 /* Dummy read to ack interrupt */
480 lis3lv02d_get_xyz(lis3, &dummy, &dummy, &dummy);
481 lis3->data_ready_count[index]++;
482}
483
484static irqreturn_t lis302dl_interrupt_thread1_8b(int irq, void *data)
485{
486 struct lis3lv02d *lis3 = data;
487 u8 irq_cfg = lis3->irq_cfg & LIS3_IRQ1_MASK;
488
489 if (irq_cfg == LIS3_IRQ1_CLICK)
490 lis302dl_interrupt_handle_click(lis3);
491 else if (unlikely(irq_cfg == LIS3_IRQ1_DATA_READY))
492 lis302dl_data_ready(lis3, IRQ_LINE0);
493 else
494 lis3lv02d_joystick_poll(lis3->idev);
495
496 return IRQ_HANDLED;
497}
498
499static irqreturn_t lis302dl_interrupt_thread2_8b(int irq, void *data)
500{
501 struct lis3lv02d *lis3 = data;
502 u8 irq_cfg = lis3->irq_cfg & LIS3_IRQ2_MASK;
503
504 if (irq_cfg == LIS3_IRQ2_CLICK)
505 lis302dl_interrupt_handle_click(lis3);
506 else if (unlikely(irq_cfg == LIS3_IRQ2_DATA_READY))
507 lis302dl_data_ready(lis3, IRQ_LINE1);
508 else
509 lis3lv02d_joystick_poll(lis3->idev);
510
511 return IRQ_HANDLED;
512}
513
514static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
515{
516 if (test_and_set_bit(0, &lis3_dev.misc_opened))
517 return -EBUSY; /* already open */
518
519 if (lis3_dev.pm_dev)
520 pm_runtime_get_sync(lis3_dev.pm_dev);
521
522 atomic_set(&lis3_dev.count, 0);
523 return 0;
524}
525
526static int lis3lv02d_misc_release(struct inode *inode, struct file *file)
527{
528 fasync_helper(-1, file, 0, &lis3_dev.async_queue);
529 clear_bit(0, &lis3_dev.misc_opened); /* release the device */
530 if (lis3_dev.pm_dev)
531 pm_runtime_put(lis3_dev.pm_dev);
532 return 0;
533}
534
535static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
536 size_t count, loff_t *pos)
537{
538 DECLARE_WAITQUEUE(wait, current);
539 u32 data;
540 unsigned char byte_data;
541 ssize_t retval = 1;
542
543 if (count < 1)
544 return -EINVAL;
545
546 add_wait_queue(&lis3_dev.misc_wait, &wait);
547 while (true) {
548 set_current_state(TASK_INTERRUPTIBLE);
549 data = atomic_xchg(&lis3_dev.count, 0);
550 if (data)
551 break;
552
553 if (file->f_flags & O_NONBLOCK) {
554 retval = -EAGAIN;
555 goto out;
556 }
557
558 if (signal_pending(current)) {
559 retval = -ERESTARTSYS;
560 goto out;
561 }
562
563 schedule();
564 }
565
566 if (data < 255)
567 byte_data = data;
568 else
569 byte_data = 255;
570
571 /* make sure we are not going into copy_to_user() with
572 * TASK_INTERRUPTIBLE state */
573 set_current_state(TASK_RUNNING);
574 if (copy_to_user(buf, &byte_data, sizeof(byte_data)))
575 retval = -EFAULT;
576
577out:
578 __set_current_state(TASK_RUNNING);
579 remove_wait_queue(&lis3_dev.misc_wait, &wait);
580
581 return retval;
582}
583
584static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
585{
586 poll_wait(file, &lis3_dev.misc_wait, wait);
587 if (atomic_read(&lis3_dev.count))
588 return POLLIN | POLLRDNORM;
589 return 0;
590}
591
592static int lis3lv02d_misc_fasync(int fd, struct file *file, int on)
593{
594 return fasync_helper(fd, file, on, &lis3_dev.async_queue);
595}
596
597static const struct file_operations lis3lv02d_misc_fops = {
598 .owner = THIS_MODULE,
599 .llseek = no_llseek,
600 .read = lis3lv02d_misc_read,
601 .open = lis3lv02d_misc_open,
602 .release = lis3lv02d_misc_release,
603 .poll = lis3lv02d_misc_poll,
604 .fasync = lis3lv02d_misc_fasync,
605};
606
607static struct miscdevice lis3lv02d_misc_device = {
608 .minor = MISC_DYNAMIC_MINOR,
609 .name = "freefall",
610 .fops = &lis3lv02d_misc_fops,
611};
612
613int lis3lv02d_joystick_enable(void)
614{
615 struct input_dev *input_dev;
616 int err;
617 int max_val, fuzz, flat;
618 int btns[] = {BTN_X, BTN_Y, BTN_Z};
619
620 if (lis3_dev.idev)
621 return -EINVAL;
622
623 lis3_dev.idev = input_allocate_polled_device();
624 if (!lis3_dev.idev)
625 return -ENOMEM;
626
627 lis3_dev.idev->poll = lis3lv02d_joystick_poll;
628 lis3_dev.idev->open = lis3lv02d_joystick_open;
629 lis3_dev.idev->close = lis3lv02d_joystick_close;
630 lis3_dev.idev->poll_interval = MDPS_POLL_INTERVAL;
631 lis3_dev.idev->poll_interval_min = MDPS_POLL_MIN;
632 lis3_dev.idev->poll_interval_max = MDPS_POLL_MAX;
633 input_dev = lis3_dev.idev->input;
634
635 input_dev->name = "ST LIS3LV02DL Accelerometer";
636 input_dev->phys = DRIVER_NAME "/input0";
637 input_dev->id.bustype = BUS_HOST;
638 input_dev->id.vendor = 0;
639 input_dev->dev.parent = &lis3_dev.pdev->dev;
640
641 set_bit(EV_ABS, input_dev->evbit);
642 max_val = (lis3_dev.mdps_max_val * lis3_dev.scale) / LIS3_ACCURACY;
643 if (lis3_dev.whoami == WAI_12B) {
644 fuzz = LIS3_DEFAULT_FUZZ_12B;
645 flat = LIS3_DEFAULT_FLAT_12B;
646 } else {
647 fuzz = LIS3_DEFAULT_FUZZ_8B;
648 flat = LIS3_DEFAULT_FLAT_8B;
649 }
650 fuzz = (fuzz * lis3_dev.scale) / LIS3_ACCURACY;
651 flat = (flat * lis3_dev.scale) / LIS3_ACCURACY;
652
653 input_set_abs_params(input_dev, ABS_X, -max_val, max_val, fuzz, flat);
654 input_set_abs_params(input_dev, ABS_Y, -max_val, max_val, fuzz, flat);
655 input_set_abs_params(input_dev, ABS_Z, -max_val, max_val, fuzz, flat);
656
657 lis3_dev.mapped_btns[0] = lis3lv02d_get_axis(abs(lis3_dev.ac.x), btns);
658 lis3_dev.mapped_btns[1] = lis3lv02d_get_axis(abs(lis3_dev.ac.y), btns);
659 lis3_dev.mapped_btns[2] = lis3lv02d_get_axis(abs(lis3_dev.ac.z), btns);
660
661 err = input_register_polled_device(lis3_dev.idev);
662 if (err) {
663 input_free_polled_device(lis3_dev.idev);
664 lis3_dev.idev = NULL;
665 }
666
667 return err;
668}
669EXPORT_SYMBOL_GPL(lis3lv02d_joystick_enable);
670
671void lis3lv02d_joystick_disable(void)
672{
673 if (lis3_dev.irq)
674 free_irq(lis3_dev.irq, &lis3_dev);
675 if (lis3_dev.pdata && lis3_dev.pdata->irq2)
676 free_irq(lis3_dev.pdata->irq2, &lis3_dev);
677
678 if (!lis3_dev.idev)
679 return;
680
681 if (lis3_dev.irq)
682 misc_deregister(&lis3lv02d_misc_device);
683 input_unregister_polled_device(lis3_dev.idev);
684 input_free_polled_device(lis3_dev.idev);
685 lis3_dev.idev = NULL;
686}
687EXPORT_SYMBOL_GPL(lis3lv02d_joystick_disable);
688
689/* Sysfs stuff */
690static void lis3lv02d_sysfs_poweron(struct lis3lv02d *lis3)
691{
692 /*
693 * SYSFS functions are fast visitors so put-call
694 * immediately after the get-call. However, keep
695 * chip running for a while and schedule delayed
696 * suspend. This way periodic sysfs calls doesn't
697 * suffer from relatively long power up time.
698 */
699
700 if (lis3->pm_dev) {
701 pm_runtime_get_sync(lis3->pm_dev);
702 pm_runtime_put_noidle(lis3->pm_dev);
703 pm_schedule_suspend(lis3->pm_dev, LIS3_SYSFS_POWERDOWN_DELAY);
704 }
705}
706
707static ssize_t lis3lv02d_selftest_show(struct device *dev,
708 struct device_attribute *attr, char *buf)
709{
710 s16 values[3];
711
712 static const char ok[] = "OK";
713 static const char fail[] = "FAIL";
714 static const char irq[] = "FAIL_IRQ";
715 const char *res;
716
717 lis3lv02d_sysfs_poweron(&lis3_dev);
718 switch (lis3lv02d_selftest(&lis3_dev, values)) {
719 case SELFTEST_FAIL:
720 res = fail;
721 break;
722 case SELFTEST_IRQ:
723 res = irq;
724 break;
725 case SELFTEST_OK:
726 default:
727 res = ok;
728 break;
729 }
730 return sprintf(buf, "%s %d %d %d\n", res,
731 values[0], values[1], values[2]);
732}
733
734static ssize_t lis3lv02d_position_show(struct device *dev,
735 struct device_attribute *attr, char *buf)
736{
737 int x, y, z;
738
739 lis3lv02d_sysfs_poweron(&lis3_dev);
740 mutex_lock(&lis3_dev.mutex);
741 lis3lv02d_get_xyz(&lis3_dev, &x, &y, &z);
742 mutex_unlock(&lis3_dev.mutex);
743 return sprintf(buf, "(%d,%d,%d)\n", x, y, z);
744}
745
746static ssize_t lis3lv02d_rate_show(struct device *dev,
747 struct device_attribute *attr, char *buf)
748{
749 lis3lv02d_sysfs_poweron(&lis3_dev);
750 return sprintf(buf, "%d\n", lis3lv02d_get_odr());
751}
752
753static ssize_t lis3lv02d_rate_set(struct device *dev,
754 struct device_attribute *attr, const char *buf,
755 size_t count)
756{
757 unsigned long rate;
758
759 if (strict_strtoul(buf, 0, &rate))
760 return -EINVAL;
761
762 lis3lv02d_sysfs_poweron(&lis3_dev);
763 if (lis3lv02d_set_odr(rate))
764 return -EINVAL;
765
766 return count;
767}
768
769static DEVICE_ATTR(selftest, S_IRUSR, lis3lv02d_selftest_show, NULL);
770static DEVICE_ATTR(position, S_IRUGO, lis3lv02d_position_show, NULL);
771static DEVICE_ATTR(rate, S_IRUGO | S_IWUSR, lis3lv02d_rate_show,
772 lis3lv02d_rate_set);
773
774static struct attribute *lis3lv02d_attributes[] = {
775 &dev_attr_selftest.attr,
776 &dev_attr_position.attr,
777 &dev_attr_rate.attr,
778 NULL
779};
780
781static struct attribute_group lis3lv02d_attribute_group = {
782 .attrs = lis3lv02d_attributes
783};
784
785
786static int lis3lv02d_add_fs(struct lis3lv02d *lis3)
787{
788 lis3->pdev = platform_device_register_simple(DRIVER_NAME, -1, NULL, 0);
789 if (IS_ERR(lis3->pdev))
790 return PTR_ERR(lis3->pdev);
791
792 return sysfs_create_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group);
793}
794
795int lis3lv02d_remove_fs(struct lis3lv02d *lis3)
796{
797 sysfs_remove_group(&lis3->pdev->dev.kobj, &lis3lv02d_attribute_group);
798 platform_device_unregister(lis3->pdev);
799 if (lis3->pm_dev) {
800 /* Barrier after the sysfs remove */
801 pm_runtime_barrier(lis3->pm_dev);
802
803 /* SYSFS may have left chip running. Turn off if necessary */
804 if (!pm_runtime_suspended(lis3->pm_dev))
805 lis3lv02d_poweroff(&lis3_dev);
806
807 pm_runtime_disable(lis3->pm_dev);
808 pm_runtime_set_suspended(lis3->pm_dev);
809 }
810 kfree(lis3->reg_cache);
811 return 0;
812}
813EXPORT_SYMBOL_GPL(lis3lv02d_remove_fs);
814
815static void lis3lv02d_8b_configure(struct lis3lv02d *dev,
816 struct lis3lv02d_platform_data *p)
817{
818 int err;
819 int ctrl2 = p->hipass_ctrl;
820
821 if (p->click_flags) {
822 dev->write(dev, CLICK_CFG, p->click_flags);
823 dev->write(dev, CLICK_TIMELIMIT, p->click_time_limit);
824 dev->write(dev, CLICK_LATENCY, p->click_latency);
825 dev->write(dev, CLICK_WINDOW, p->click_window);
826 dev->write(dev, CLICK_THSZ, p->click_thresh_z & 0xf);
827 dev->write(dev, CLICK_THSY_X,
828 (p->click_thresh_x & 0xf) |
829 (p->click_thresh_y << 4));
830
831 if (dev->idev) {
832 struct input_dev *input_dev = lis3_dev.idev->input;
833 input_set_capability(input_dev, EV_KEY, BTN_X);
834 input_set_capability(input_dev, EV_KEY, BTN_Y);
835 input_set_capability(input_dev, EV_KEY, BTN_Z);
836 }
837 }
838
839 if (p->wakeup_flags) {
840 dev->write(dev, FF_WU_CFG_1, p->wakeup_flags);
841 dev->write(dev, FF_WU_THS_1, p->wakeup_thresh & 0x7f);
842 /* pdata value + 1 to keep this backward compatible*/
843 dev->write(dev, FF_WU_DURATION_1, p->duration1 + 1);
844 ctrl2 ^= HP_FF_WU1; /* Xor to keep compatible with old pdata*/
845 }
846
847 if (p->wakeup_flags2) {
848 dev->write(dev, FF_WU_CFG_2, p->wakeup_flags2);
849 dev->write(dev, FF_WU_THS_2, p->wakeup_thresh2 & 0x7f);
850 /* pdata value + 1 to keep this backward compatible*/
851 dev->write(dev, FF_WU_DURATION_2, p->duration2 + 1);
852 ctrl2 ^= HP_FF_WU2; /* Xor to keep compatible with old pdata*/
853 }
854 /* Configure hipass filters */
855 dev->write(dev, CTRL_REG2, ctrl2);
856
857 if (p->irq2) {
858 err = request_threaded_irq(p->irq2,
859 NULL,
860 lis302dl_interrupt_thread2_8b,
861 IRQF_TRIGGER_RISING | IRQF_ONESHOT |
862 (p->irq_flags2 & IRQF_TRIGGER_MASK),
863 DRIVER_NAME, &lis3_dev);
864 if (err < 0)
865 pr_err("No second IRQ. Limited functionality\n");
866 }
867}
868
869/*
870 * Initialise the accelerometer and the various subsystems.
871 * Should be rather independent of the bus system.
872 */
873int lis3lv02d_init_device(struct lis3lv02d *dev)
874{
875 int err;
876 irq_handler_t thread_fn;
877 int irq_flags = 0;
878
879 dev->whoami = lis3lv02d_read_8(dev, WHO_AM_I);
880
881 switch (dev->whoami) {
882 case WAI_12B:
883 pr_info("12 bits sensor found\n");
884 dev->read_data = lis3lv02d_read_12;
885 dev->mdps_max_val = 2048;
886 dev->pwron_delay = LIS3_PWRON_DELAY_WAI_12B;
887 dev->odrs = lis3_12_rates;
888 dev->odr_mask = CTRL1_DF0 | CTRL1_DF1;
889 dev->scale = LIS3_SENSITIVITY_12B;
890 dev->regs = lis3_wai12_regs;
891 dev->regs_size = ARRAY_SIZE(lis3_wai12_regs);
892 break;
893 case WAI_8B:
894 pr_info("8 bits sensor found\n");
895 dev->read_data = lis3lv02d_read_8;
896 dev->mdps_max_val = 128;
897 dev->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
898 dev->odrs = lis3_8_rates;
899 dev->odr_mask = CTRL1_DR;
900 dev->scale = LIS3_SENSITIVITY_8B;
901 dev->regs = lis3_wai8_regs;
902 dev->regs_size = ARRAY_SIZE(lis3_wai8_regs);
903 break;
904 case WAI_3DC:
905 pr_info("8 bits 3DC sensor found\n");
906 dev->read_data = lis3lv02d_read_8;
907 dev->mdps_max_val = 128;
908 dev->pwron_delay = LIS3_PWRON_DELAY_WAI_8B;
909 dev->odrs = lis3_3dc_rates;
910 dev->odr_mask = CTRL1_ODR0|CTRL1_ODR1|CTRL1_ODR2|CTRL1_ODR3;
911 dev->scale = LIS3_SENSITIVITY_8B;
912 break;
913 default:
914 pr_err("unknown sensor type 0x%X\n", dev->whoami);
915 return -EINVAL;
916 }
917
918 dev->reg_cache = kzalloc(max(sizeof(lis3_wai8_regs),
919 sizeof(lis3_wai12_regs)), GFP_KERNEL);
920
921 if (dev->reg_cache == NULL) {
922 printk(KERN_ERR DRIVER_NAME "out of memory\n");
923 return -ENOMEM;
924 }
925
926 mutex_init(&dev->mutex);
927 atomic_set(&dev->wake_thread, 0);
928
929 lis3lv02d_add_fs(dev);
930 lis3lv02d_poweron(dev);
931
932 if (dev->pm_dev) {
933 pm_runtime_set_active(dev->pm_dev);
934 pm_runtime_enable(dev->pm_dev);
935 }
936
937 if (lis3lv02d_joystick_enable())
938 pr_err("joystick initialization failed\n");
939
940 /* passing in platform specific data is purely optional and only
941 * used by the SPI transport layer at the moment */
942 if (dev->pdata) {
943 struct lis3lv02d_platform_data *p = dev->pdata;
944
945 if (dev->whoami == WAI_8B)
946 lis3lv02d_8b_configure(dev, p);
947
948 irq_flags = p->irq_flags1 & IRQF_TRIGGER_MASK;
949
950 dev->irq_cfg = p->irq_cfg;
951 if (p->irq_cfg)
952 dev->write(dev, CTRL_REG3, p->irq_cfg);
953
954 if (p->default_rate)
955 lis3lv02d_set_odr(p->default_rate);
956 }
957
958 /* bail if we did not get an IRQ from the bus layer */
959 if (!dev->irq) {
960 pr_debug("No IRQ. Disabling /dev/freefall\n");
961 goto out;
962 }
963
964 /*
965 * The sensor can generate interrupts for free-fall and direction
966 * detection (distinguishable with FF_WU_SRC and DD_SRC) but to keep
967 * the things simple and _fast_ we activate it only for free-fall, so
968 * no need to read register (very slow with ACPI). For the same reason,
969 * we forbid shared interrupts.
970 *
971 * IRQF_TRIGGER_RISING seems pointless on HP laptops because the
972 * io-apic is not configurable (and generates a warning) but I keep it
973 * in case of support for other hardware.
974 */
975 if (dev->pdata && dev->whoami == WAI_8B)
976 thread_fn = lis302dl_interrupt_thread1_8b;
977 else
978 thread_fn = NULL;
979
980 err = request_threaded_irq(dev->irq, lis302dl_interrupt,
981 thread_fn,
982 IRQF_TRIGGER_RISING | IRQF_ONESHOT |
983 irq_flags,
984 DRIVER_NAME, &lis3_dev);
985
986 if (err < 0) {
987 pr_err("Cannot get IRQ\n");
988 goto out;
989 }
990
991 if (misc_register(&lis3lv02d_misc_device))
992 pr_err("misc_register failed\n");
993out:
994 return 0;
995}
996EXPORT_SYMBOL_GPL(lis3lv02d_init_device);
997
998MODULE_DESCRIPTION("ST LIS3LV02Dx three-axis digital accelerometer driver");
999MODULE_AUTHOR("Yan Burman, Eric Piel, Pavel Machek");
1000MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/lis3lv02d.h b/drivers/hwmon/lis3lv02d.h
deleted file mode 100644
index a1939589eb2c..000000000000
--- a/drivers/hwmon/lis3lv02d.h
+++ /dev/null
@@ -1,291 +0,0 @@
1/*
2 * lis3lv02d.h - ST LIS3LV02DL accelerometer driver
3 *
4 * Copyright (C) 2007-2008 Yan Burman
5 * Copyright (C) 2008-2009 Eric Piel
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21#include <linux/platform_device.h>
22#include <linux/input-polldev.h>
23#include <linux/regulator/consumer.h>
24
25/*
26 * This driver tries to support the "digital" accelerometer chips from
27 * STMicroelectronics such as LIS3LV02DL, LIS302DL, LIS3L02DQ, LIS331DL,
28 * LIS35DE, or LIS202DL. They are very similar in terms of programming, with
29 * almost the same registers. In addition to differing on physical properties,
30 * they differ on the number of axes (2/3), precision (8/12 bits), and special
31 * features (freefall detection, click...). Unfortunately, not all the
32 * differences can be probed via a register.
33 * They can be connected either via I²C or SPI.
34 */
35
36#include <linux/lis3lv02d.h>
37
38enum lis3_reg {
39 WHO_AM_I = 0x0F,
40 OFFSET_X = 0x16,
41 OFFSET_Y = 0x17,
42 OFFSET_Z = 0x18,
43 GAIN_X = 0x19,
44 GAIN_Y = 0x1A,
45 GAIN_Z = 0x1B,
46 CTRL_REG1 = 0x20,
47 CTRL_REG2 = 0x21,
48 CTRL_REG3 = 0x22,
49 CTRL_REG4 = 0x23,
50 HP_FILTER_RESET = 0x23,
51 STATUS_REG = 0x27,
52 OUTX_L = 0x28,
53 OUTX_H = 0x29,
54 OUTX = 0x29,
55 OUTY_L = 0x2A,
56 OUTY_H = 0x2B,
57 OUTY = 0x2B,
58 OUTZ_L = 0x2C,
59 OUTZ_H = 0x2D,
60 OUTZ = 0x2D,
61};
62
63enum lis302d_reg {
64 FF_WU_CFG_1 = 0x30,
65 FF_WU_SRC_1 = 0x31,
66 FF_WU_THS_1 = 0x32,
67 FF_WU_DURATION_1 = 0x33,
68 FF_WU_CFG_2 = 0x34,
69 FF_WU_SRC_2 = 0x35,
70 FF_WU_THS_2 = 0x36,
71 FF_WU_DURATION_2 = 0x37,
72 CLICK_CFG = 0x38,
73 CLICK_SRC = 0x39,
74 CLICK_THSY_X = 0x3B,
75 CLICK_THSZ = 0x3C,
76 CLICK_TIMELIMIT = 0x3D,
77 CLICK_LATENCY = 0x3E,
78 CLICK_WINDOW = 0x3F,
79};
80
81enum lis3lv02d_reg {
82 FF_WU_CFG = 0x30,
83 FF_WU_SRC = 0x31,
84 FF_WU_ACK = 0x32,
85 FF_WU_THS_L = 0x34,
86 FF_WU_THS_H = 0x35,
87 FF_WU_DURATION = 0x36,
88 DD_CFG = 0x38,
89 DD_SRC = 0x39,
90 DD_ACK = 0x3A,
91 DD_THSI_L = 0x3C,
92 DD_THSI_H = 0x3D,
93 DD_THSE_L = 0x3E,
94 DD_THSE_H = 0x3F,
95};
96
97enum lis3_who_am_i {
98 WAI_3DC = 0x33, /* 8 bits: LIS3DC, HP3DC */
99 WAI_12B = 0x3A, /* 12 bits: LIS3LV02D[LQ]... */
100 WAI_8B = 0x3B, /* 8 bits: LIS[23]02D[LQ]... */
101 WAI_6B = 0x52, /* 6 bits: LIS331DLF - not supported */
102};
103
104enum lis3lv02d_ctrl1_12b {
105 CTRL1_Xen = 0x01,
106 CTRL1_Yen = 0x02,
107 CTRL1_Zen = 0x04,
108 CTRL1_ST = 0x08,
109 CTRL1_DF0 = 0x10,
110 CTRL1_DF1 = 0x20,
111 CTRL1_PD0 = 0x40,
112 CTRL1_PD1 = 0x80,
113};
114
115/* Delta to ctrl1_12b version */
116enum lis3lv02d_ctrl1_8b {
117 CTRL1_STM = 0x08,
118 CTRL1_STP = 0x10,
119 CTRL1_FS = 0x20,
120 CTRL1_PD = 0x40,
121 CTRL1_DR = 0x80,
122};
123
124enum lis3lv02d_ctrl1_3dc {
125 CTRL1_ODR0 = 0x10,
126 CTRL1_ODR1 = 0x20,
127 CTRL1_ODR2 = 0x40,
128 CTRL1_ODR3 = 0x80,
129};
130
131enum lis3lv02d_ctrl2 {
132 CTRL2_DAS = 0x01,
133 CTRL2_SIM = 0x02,
134 CTRL2_DRDY = 0x04,
135 CTRL2_IEN = 0x08,
136 CTRL2_BOOT = 0x10,
137 CTRL2_BLE = 0x20,
138 CTRL2_BDU = 0x40, /* Block Data Update */
139 CTRL2_FS = 0x80, /* Full Scale selection */
140};
141
142enum lis3lv02d_ctrl4_3dc {
143 CTRL4_SIM = 0x01,
144 CTRL4_ST0 = 0x02,
145 CTRL4_ST1 = 0x04,
146 CTRL4_FS0 = 0x10,
147 CTRL4_FS1 = 0x20,
148};
149
150enum lis302d_ctrl2 {
151 HP_FF_WU2 = 0x08,
152 HP_FF_WU1 = 0x04,
153 CTRL2_BOOT_8B = 0x40,
154};
155
156enum lis3lv02d_ctrl3 {
157 CTRL3_CFS0 = 0x01,
158 CTRL3_CFS1 = 0x02,
159 CTRL3_FDS = 0x10,
160 CTRL3_HPFF = 0x20,
161 CTRL3_HPDD = 0x40,
162 CTRL3_ECK = 0x80,
163};
164
165enum lis3lv02d_status_reg {
166 STATUS_XDA = 0x01,
167 STATUS_YDA = 0x02,
168 STATUS_ZDA = 0x04,
169 STATUS_XYZDA = 0x08,
170 STATUS_XOR = 0x10,
171 STATUS_YOR = 0x20,
172 STATUS_ZOR = 0x40,
173 STATUS_XYZOR = 0x80,
174};
175
176enum lis3lv02d_ff_wu_cfg {
177 FF_WU_CFG_XLIE = 0x01,
178 FF_WU_CFG_XHIE = 0x02,
179 FF_WU_CFG_YLIE = 0x04,
180 FF_WU_CFG_YHIE = 0x08,
181 FF_WU_CFG_ZLIE = 0x10,
182 FF_WU_CFG_ZHIE = 0x20,
183 FF_WU_CFG_LIR = 0x40,
184 FF_WU_CFG_AOI = 0x80,
185};
186
187enum lis3lv02d_ff_wu_src {
188 FF_WU_SRC_XL = 0x01,
189 FF_WU_SRC_XH = 0x02,
190 FF_WU_SRC_YL = 0x04,
191 FF_WU_SRC_YH = 0x08,
192 FF_WU_SRC_ZL = 0x10,
193 FF_WU_SRC_ZH = 0x20,
194 FF_WU_SRC_IA = 0x40,
195};
196
197enum lis3lv02d_dd_cfg {
198 DD_CFG_XLIE = 0x01,
199 DD_CFG_XHIE = 0x02,
200 DD_CFG_YLIE = 0x04,
201 DD_CFG_YHIE = 0x08,
202 DD_CFG_ZLIE = 0x10,
203 DD_CFG_ZHIE = 0x20,
204 DD_CFG_LIR = 0x40,
205 DD_CFG_IEND = 0x80,
206};
207
208enum lis3lv02d_dd_src {
209 DD_SRC_XL = 0x01,
210 DD_SRC_XH = 0x02,
211 DD_SRC_YL = 0x04,
212 DD_SRC_YH = 0x08,
213 DD_SRC_ZL = 0x10,
214 DD_SRC_ZH = 0x20,
215 DD_SRC_IA = 0x40,
216};
217
218enum lis3lv02d_click_src_8b {
219 CLICK_SINGLE_X = 0x01,
220 CLICK_DOUBLE_X = 0x02,
221 CLICK_SINGLE_Y = 0x04,
222 CLICK_DOUBLE_Y = 0x08,
223 CLICK_SINGLE_Z = 0x10,
224 CLICK_DOUBLE_Z = 0x20,
225 CLICK_IA = 0x40,
226};
227
228enum lis3lv02d_reg_state {
229 LIS3_REG_OFF = 0x00,
230 LIS3_REG_ON = 0x01,
231};
232
233union axis_conversion {
234 struct {
235 int x, y, z;
236 };
237 int as_array[3];
238
239};
240
241struct lis3lv02d {
242 void *bus_priv; /* used by the bus layer only */
243 struct device *pm_dev; /* for pm_runtime purposes */
244 int (*init) (struct lis3lv02d *lis3);
245 int (*write) (struct lis3lv02d *lis3, int reg, u8 val);
246 int (*read) (struct lis3lv02d *lis3, int reg, u8 *ret);
247 int (*blkread) (struct lis3lv02d *lis3, int reg, int len, u8 *ret);
248 int (*reg_ctrl) (struct lis3lv02d *lis3, bool state);
249
250 int *odrs; /* Supported output data rates */
251 u8 *regs; /* Regs to store / restore */
252 int regs_size;
253 u8 *reg_cache;
254 bool regs_stored;
255 u8 odr_mask; /* ODR bit mask */
256 u8 whoami; /* indicates measurement precision */
257 s16 (*read_data) (struct lis3lv02d *lis3, int reg);
258 int mdps_max_val;
259 int pwron_delay;
260 int scale; /*
261 * relationship between 1 LBS and mG
262 * (1/1000th of earth gravity)
263 */
264
265 struct input_polled_dev *idev; /* input device */
266 struct platform_device *pdev; /* platform device */
267 struct regulator_bulk_data regulators[2];
268 atomic_t count; /* interrupt count after last read */
269 union axis_conversion ac; /* hw -> logical axis */
270 int mapped_btns[3];
271
272 u32 irq; /* IRQ number */
273 struct fasync_struct *async_queue; /* queue for the misc device */
274 wait_queue_head_t misc_wait; /* Wait queue for the misc device */
275 unsigned long misc_opened; /* bit0: whether the device is open */
276 int data_ready_count[2];
277 atomic_t wake_thread;
278 unsigned char irq_cfg;
279
280 struct lis3lv02d_platform_data *pdata; /* for passing board config */
281 struct mutex mutex; /* Serialize poll and selftest */
282};
283
284int lis3lv02d_init_device(struct lis3lv02d *lis3);
285int lis3lv02d_joystick_enable(void);
286void lis3lv02d_joystick_disable(void);
287void lis3lv02d_poweroff(struct lis3lv02d *lis3);
288void lis3lv02d_poweron(struct lis3lv02d *lis3);
289int lis3lv02d_remove_fs(struct lis3lv02d *lis3);
290
291extern struct lis3lv02d lis3_dev;
diff --git a/drivers/hwmon/lis3lv02d_i2c.c b/drivers/hwmon/lis3lv02d_i2c.c
deleted file mode 100644
index 8853afce85ce..000000000000
--- a/drivers/hwmon/lis3lv02d_i2c.c
+++ /dev/null
@@ -1,279 +0,0 @@
1/*
2 * drivers/hwmon/lis3lv02d_i2c.c
3 *
4 * Implements I2C interface for lis3lv02d (STMicroelectronics) accelerometer.
5 * Driver is based on corresponding SPI driver written by Daniel Mack
6 * (lis3lv02d_spi.c (C) 2009 Daniel Mack <daniel@caiaq.de> ).
7 *
8 * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
9 *
10 * Contact: Samu Onkalo <samu.p.onkalo@nokia.com>
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * version 2 as published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
24 * 02110-1301 USA
25 */
26
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/init.h>
30#include <linux/err.h>
31#include <linux/i2c.h>
32#include <linux/pm_runtime.h>
33#include <linux/delay.h>
34#include "lis3lv02d.h"
35
36#define DRV_NAME "lis3lv02d_i2c"
37
38static const char reg_vdd[] = "Vdd";
39static const char reg_vdd_io[] = "Vdd_IO";
40
41static int lis3_reg_ctrl(struct lis3lv02d *lis3, bool state)
42{
43 int ret;
44 if (state == LIS3_REG_OFF) {
45 ret = regulator_bulk_disable(ARRAY_SIZE(lis3->regulators),
46 lis3->regulators);
47 } else {
48 ret = regulator_bulk_enable(ARRAY_SIZE(lis3->regulators),
49 lis3->regulators);
50 /* Chip needs time to wakeup. Not mentioned in datasheet */
51 usleep_range(10000, 20000);
52 }
53 return ret;
54}
55
56static inline s32 lis3_i2c_write(struct lis3lv02d *lis3, int reg, u8 value)
57{
58 struct i2c_client *c = lis3->bus_priv;
59 return i2c_smbus_write_byte_data(c, reg, value);
60}
61
62static inline s32 lis3_i2c_read(struct lis3lv02d *lis3, int reg, u8 *v)
63{
64 struct i2c_client *c = lis3->bus_priv;
65 *v = i2c_smbus_read_byte_data(c, reg);
66 return 0;
67}
68
69static inline s32 lis3_i2c_blockread(struct lis3lv02d *lis3, int reg, int len,
70 u8 *v)
71{
72 struct i2c_client *c = lis3->bus_priv;
73 reg |= (1 << 7); /* 7th bit enables address auto incrementation */
74 return i2c_smbus_read_i2c_block_data(c, reg, len, v);
75}
76
77static int lis3_i2c_init(struct lis3lv02d *lis3)
78{
79 u8 reg;
80 int ret;
81
82 if (lis3->reg_ctrl)
83 lis3_reg_ctrl(lis3, LIS3_REG_ON);
84
85 lis3->read(lis3, WHO_AM_I, &reg);
86 if (reg != lis3->whoami)
87 printk(KERN_ERR "lis3: power on failure\n");
88
89 /* power up the device */
90 ret = lis3->read(lis3, CTRL_REG1, &reg);
91 if (ret < 0)
92 return ret;
93
94 reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
95 return lis3->write(lis3, CTRL_REG1, reg);
96}
97
98/* Default axis mapping but it can be overwritten by platform data */
99static union axis_conversion lis3lv02d_axis_map =
100 { .as_array = { LIS3_DEV_X, LIS3_DEV_Y, LIS3_DEV_Z } };
101
102static int __devinit lis3lv02d_i2c_probe(struct i2c_client *client,
103 const struct i2c_device_id *id)
104{
105 int ret = 0;
106 struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
107
108 if (pdata) {
109 /* Regulator control is optional */
110 if (pdata->driver_features & LIS3_USE_REGULATOR_CTRL)
111 lis3_dev.reg_ctrl = lis3_reg_ctrl;
112
113 if ((pdata->driver_features & LIS3_USE_BLOCK_READ) &&
114 (i2c_check_functionality(client->adapter,
115 I2C_FUNC_SMBUS_I2C_BLOCK)))
116 lis3_dev.blkread = lis3_i2c_blockread;
117
118 if (pdata->axis_x)
119 lis3lv02d_axis_map.x = pdata->axis_x;
120
121 if (pdata->axis_y)
122 lis3lv02d_axis_map.y = pdata->axis_y;
123
124 if (pdata->axis_z)
125 lis3lv02d_axis_map.z = pdata->axis_z;
126
127 if (pdata->setup_resources)
128 ret = pdata->setup_resources();
129
130 if (ret)
131 goto fail;
132 }
133
134 if (lis3_dev.reg_ctrl) {
135 lis3_dev.regulators[0].supply = reg_vdd;
136 lis3_dev.regulators[1].supply = reg_vdd_io;
137 ret = regulator_bulk_get(&client->dev,
138 ARRAY_SIZE(lis3_dev.regulators),
139 lis3_dev.regulators);
140 if (ret < 0)
141 goto fail;
142 }
143
144 lis3_dev.pdata = pdata;
145 lis3_dev.bus_priv = client;
146 lis3_dev.init = lis3_i2c_init;
147 lis3_dev.read = lis3_i2c_read;
148 lis3_dev.write = lis3_i2c_write;
149 lis3_dev.irq = client->irq;
150 lis3_dev.ac = lis3lv02d_axis_map;
151 lis3_dev.pm_dev = &client->dev;
152
153 i2c_set_clientdata(client, &lis3_dev);
154
155 /* Provide power over the init call */
156 if (lis3_dev.reg_ctrl)
157 lis3_reg_ctrl(&lis3_dev, LIS3_REG_ON);
158
159 ret = lis3lv02d_init_device(&lis3_dev);
160
161 if (lis3_dev.reg_ctrl)
162 lis3_reg_ctrl(&lis3_dev, LIS3_REG_OFF);
163
164 if (ret == 0)
165 return 0;
166fail:
167 if (pdata && pdata->release_resources)
168 pdata->release_resources();
169 return ret;
170}
171
172static int __devexit lis3lv02d_i2c_remove(struct i2c_client *client)
173{
174 struct lis3lv02d *lis3 = i2c_get_clientdata(client);
175 struct lis3lv02d_platform_data *pdata = client->dev.platform_data;
176
177 if (pdata && pdata->release_resources)
178 pdata->release_resources();
179
180 lis3lv02d_joystick_disable();
181 lis3lv02d_remove_fs(&lis3_dev);
182
183 if (lis3_dev.reg_ctrl)
184 regulator_bulk_free(ARRAY_SIZE(lis3->regulators),
185 lis3_dev.regulators);
186 return 0;
187}
188
189#ifdef CONFIG_PM_SLEEP
190static int lis3lv02d_i2c_suspend(struct device *dev)
191{
192 struct i2c_client *client = container_of(dev, struct i2c_client, dev);
193 struct lis3lv02d *lis3 = i2c_get_clientdata(client);
194
195 if (!lis3->pdata || !lis3->pdata->wakeup_flags)
196 lis3lv02d_poweroff(lis3);
197 return 0;
198}
199
200static int lis3lv02d_i2c_resume(struct device *dev)
201{
202 struct i2c_client *client = container_of(dev, struct i2c_client, dev);
203 struct lis3lv02d *lis3 = i2c_get_clientdata(client);
204
205 /*
206 * pm_runtime documentation says that devices should always
207 * be powered on at resume. Pm_runtime turns them off after system
208 * wide resume is complete.
209 */
210 if (!lis3->pdata || !lis3->pdata->wakeup_flags ||
211 pm_runtime_suspended(dev))
212 lis3lv02d_poweron(lis3);
213
214 return 0;
215}
216#endif /* CONFIG_PM_SLEEP */
217
218#ifdef CONFIG_PM_RUNTIME
219static int lis3_i2c_runtime_suspend(struct device *dev)
220{
221 struct i2c_client *client = container_of(dev, struct i2c_client, dev);
222 struct lis3lv02d *lis3 = i2c_get_clientdata(client);
223
224 lis3lv02d_poweroff(lis3);
225 return 0;
226}
227
228static int lis3_i2c_runtime_resume(struct device *dev)
229{
230 struct i2c_client *client = container_of(dev, struct i2c_client, dev);
231 struct lis3lv02d *lis3 = i2c_get_clientdata(client);
232
233 lis3lv02d_poweron(lis3);
234 return 0;
235}
236#endif /* CONFIG_PM_RUNTIME */
237
238static const struct i2c_device_id lis3lv02d_id[] = {
239 {"lis3lv02d", 0 },
240 {}
241};
242
243MODULE_DEVICE_TABLE(i2c, lis3lv02d_id);
244
245static const struct dev_pm_ops lis3_pm_ops = {
246 SET_SYSTEM_SLEEP_PM_OPS(lis3lv02d_i2c_suspend,
247 lis3lv02d_i2c_resume)
248 SET_RUNTIME_PM_OPS(lis3_i2c_runtime_suspend,
249 lis3_i2c_runtime_resume,
250 NULL)
251};
252
253static struct i2c_driver lis3lv02d_i2c_driver = {
254 .driver = {
255 .name = DRV_NAME,
256 .owner = THIS_MODULE,
257 .pm = &lis3_pm_ops,
258 },
259 .probe = lis3lv02d_i2c_probe,
260 .remove = __devexit_p(lis3lv02d_i2c_remove),
261 .id_table = lis3lv02d_id,
262};
263
264static int __init lis3lv02d_init(void)
265{
266 return i2c_add_driver(&lis3lv02d_i2c_driver);
267}
268
269static void __exit lis3lv02d_exit(void)
270{
271 i2c_del_driver(&lis3lv02d_i2c_driver);
272}
273
274MODULE_AUTHOR("Nokia Corporation");
275MODULE_DESCRIPTION("lis3lv02d I2C interface");
276MODULE_LICENSE("GPL");
277
278module_init(lis3lv02d_init);
279module_exit(lis3lv02d_exit);
diff --git a/drivers/hwmon/lis3lv02d_spi.c b/drivers/hwmon/lis3lv02d_spi.c
deleted file mode 100644
index c1f8a8fbf694..000000000000
--- a/drivers/hwmon/lis3lv02d_spi.c
+++ /dev/null
@@ -1,145 +0,0 @@
1/*
2 * lis3lv02d_spi - SPI glue layer for lis3lv02d
3 *
4 * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * publishhed by the Free Software Foundation.
9 */
10
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/init.h>
14#include <linux/err.h>
15#include <linux/input.h>
16#include <linux/interrupt.h>
17#include <linux/workqueue.h>
18#include <linux/spi/spi.h>
19#include <linux/pm.h>
20
21#include "lis3lv02d.h"
22
23#define DRV_NAME "lis3lv02d_spi"
24#define LIS3_SPI_READ 0x80
25
26static int lis3_spi_read(struct lis3lv02d *lis3, int reg, u8 *v)
27{
28 struct spi_device *spi = lis3->bus_priv;
29 int ret = spi_w8r8(spi, reg | LIS3_SPI_READ);
30 if (ret < 0)
31 return -EINVAL;
32
33 *v = (u8) ret;
34 return 0;
35}
36
37static int lis3_spi_write(struct lis3lv02d *lis3, int reg, u8 val)
38{
39 u8 tmp[2] = { reg, val };
40 struct spi_device *spi = lis3->bus_priv;
41 return spi_write(spi, tmp, sizeof(tmp));
42}
43
44static int lis3_spi_init(struct lis3lv02d *lis3)
45{
46 u8 reg;
47 int ret;
48
49 /* power up the device */
50 ret = lis3->read(lis3, CTRL_REG1, &reg);
51 if (ret < 0)
52 return ret;
53
54 reg |= CTRL1_PD0 | CTRL1_Xen | CTRL1_Yen | CTRL1_Zen;
55 return lis3->write(lis3, CTRL_REG1, reg);
56}
57
58static union axis_conversion lis3lv02d_axis_normal =
59 { .as_array = { 1, 2, 3 } };
60
61static int __devinit lis302dl_spi_probe(struct spi_device *spi)
62{
63 int ret;
64
65 spi->bits_per_word = 8;
66 spi->mode = SPI_MODE_0;
67 ret = spi_setup(spi);
68 if (ret < 0)
69 return ret;
70
71 lis3_dev.bus_priv = spi;
72 lis3_dev.init = lis3_spi_init;
73 lis3_dev.read = lis3_spi_read;
74 lis3_dev.write = lis3_spi_write;
75 lis3_dev.irq = spi->irq;
76 lis3_dev.ac = lis3lv02d_axis_normal;
77 lis3_dev.pdata = spi->dev.platform_data;
78 spi_set_drvdata(spi, &lis3_dev);
79
80 return lis3lv02d_init_device(&lis3_dev);
81}
82
83static int __devexit lis302dl_spi_remove(struct spi_device *spi)
84{
85 struct lis3lv02d *lis3 = spi_get_drvdata(spi);
86 lis3lv02d_joystick_disable();
87 lis3lv02d_poweroff(lis3);
88
89 return lis3lv02d_remove_fs(&lis3_dev);
90}
91
92#ifdef CONFIG_PM_SLEEP
93static int lis3lv02d_spi_suspend(struct device *dev)
94{
95 struct spi_device *spi = to_spi_device(dev);
96 struct lis3lv02d *lis3 = spi_get_drvdata(spi);
97
98 if (!lis3->pdata || !lis3->pdata->wakeup_flags)
99 lis3lv02d_poweroff(&lis3_dev);
100
101 return 0;
102}
103
104static int lis3lv02d_spi_resume(struct device *dev)
105{
106 struct spi_device *spi = to_spi_device(dev);
107 struct lis3lv02d *lis3 = spi_get_drvdata(spi);
108
109 if (!lis3->pdata || !lis3->pdata->wakeup_flags)
110 lis3lv02d_poweron(lis3);
111
112 return 0;
113}
114#endif
115
116static SIMPLE_DEV_PM_OPS(lis3lv02d_spi_pm, lis3lv02d_spi_suspend,
117 lis3lv02d_spi_resume);
118
119static struct spi_driver lis302dl_spi_driver = {
120 .driver = {
121 .name = DRV_NAME,
122 .owner = THIS_MODULE,
123 .pm = &lis3lv02d_spi_pm,
124 },
125 .probe = lis302dl_spi_probe,
126 .remove = __devexit_p(lis302dl_spi_remove),
127};
128
129static int __init lis302dl_init(void)
130{
131 return spi_register_driver(&lis302dl_spi_driver);
132}
133
134static void __exit lis302dl_exit(void)
135{
136 spi_unregister_driver(&lis302dl_spi_driver);
137}
138
139module_init(lis302dl_init);
140module_exit(lis302dl_exit);
141
142MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
143MODULE_DESCRIPTION("lis3lv02d SPI glue layer");
144MODULE_LICENSE("GPL");
145MODULE_ALIAS("spi:" DRV_NAME);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 18:06:03 -0500