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Merge git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Browse source 
* git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: make EVIOCGSND return meaningful data
  Input: ressurect EVIOCGREP and EVIOCSREP
  Input: psmouse - fix new device detection logic
  Input: move input_device_id to mod_devicetable.h
  Input: allow using several chords for braille
  Input: allow passing NULL to input_free_device()
  Input: spitzkbd - fix the reversed Address and Calender keys
  Input: ads7846 - improve filtering for thumb press accuracy
  Input: ads7846 - report 0 pressure value along with pen up event
  Input: ads7846 - handle IRQs that were latched during disabled IRQs
  Input: ads7846 - miscellaneous fixes
  Input: ads7846 - use msleep() instead of udelay() in suspend
  Input: ads7846 - debouncing and rudimentary sample filtering
  Input: ads7846 - power down ADC a bit later
  Input: ads7846 - add pen_down sysfs attribute
  Input: wistron - add support for Fujitsu N3510
  Input: wistron - add signature for Amilo M7400
This commit is contained in:
Linus Torvalds 2006-05-01 07:48:38 -07:00
commit 9f29333dae
11 changed files with 555 additions and 167 deletions
Download patch file Download diff file Expand all files Collapse all files

21
drivers/input/evdev.c
View file

@ -403,6 +403,27 @@ static long evdev_ioctl_handler(struct file *file, unsigned int cmd,
case EVIOCGID:
if (copy_to_user(p, &dev->id, sizeof(struct input_id)))
return -EFAULT;
return 0;
case EVIOCGREP:
if (!test_bit(EV_REP, dev->evbit))
return -ENOSYS;
if (put_user(dev->rep[REP_DELAY], ip))
return -EFAULT;
if (put_user(dev->rep[REP_PERIOD], ip + 1))
return -EFAULT;
return 0;
case EVIOCSREP:
if (!test_bit(EV_REP, dev->evbit))
return -ENOSYS;
if (get_user(u, ip))
return -EFAULT;
if (get_user(v, ip + 1))
return -EFAULT;
input_event(dev, EV_REP, REP_DELAY, u);
input_event(dev, EV_REP, REP_PERIOD, v);
return 0;

11
drivers/input/input.c
View file

@ -155,6 +155,9 @@ void input_event(struct input_dev *dev, unsigned int type, unsigned int code, in
if (code > SND_MAX || !test_bit(code, dev->sndbit))
return;
if (!!test_bit(code, dev->snd) != !!value)
change_bit(code, dev->snd);
if (dev->event) dev->event(dev, type, code, value);
break;
@ -286,19 +289,19 @@ static struct input_device_id *input_match_device(struct input_device_id *id, st
for (; id->flags || id->driver_info; id++) {
if (id->flags & INPUT_DEVICE_ID_MATCH_BUS)
if (id->id.bustype != dev->id.bustype)
if (id->bustype != dev->id.bustype)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_VENDOR)
if (id->id.vendor != dev->id.vendor)
if (id->vendor != dev->id.vendor)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_PRODUCT)
if (id->id.product != dev->id.product)
if (id->product != dev->id.product)
continue;
if (id->flags & INPUT_DEVICE_ID_MATCH_VERSION)
if (id->id.version != dev->id.version)
if (id->version != dev->id.version)
continue;
MATCH_BIT(evbit, EV_MAX);

4
drivers/input/keyboard/spitzkbd.c
View file

@ -53,8 +53,8 @@ static unsigned char spitzkbd_keycode[NR_SCANCODES] = {
KEY_LEFTCTRL, KEY_1, KEY_3, KEY_5, KEY_6, KEY_7, KEY_9, KEY_0, KEY_BACKSPACE, SPITZ_KEY_EXOK, SPITZ_KEY_EXCANCEL, 0, 0, 0, 0, 0, /* 1-16 */
0, KEY_2, KEY_4, KEY_R, KEY_Y, KEY_8, KEY_I, KEY_O, KEY_P, SPITZ_KEY_EXJOGDOWN, SPITZ_KEY_EXJOGUP, 0, 0, 0, 0, 0, /* 17-32 */
KEY_TAB, KEY_Q, KEY_E, KEY_T, KEY_G, KEY_U, KEY_J, KEY_K, 0, 0, 0, 0, 0, 0, 0, 0, /* 33-48 */
SPITZ_KEY_CALENDER, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0, /* 49-64 */
SPITZ_KEY_ADDRESS, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0, /* 65-80 */
SPITZ_KEY_ADDRESS, KEY_W, KEY_S, KEY_F, KEY_V, KEY_H, KEY_M, KEY_L, 0, KEY_RIGHTSHIFT, 0, 0, 0, 0, 0, 0, /* 49-64 */
SPITZ_KEY_CALENDER, KEY_A, KEY_D, KEY_C, KEY_B, KEY_N, KEY_DOT, 0, KEY_ENTER, KEY_LEFTSHIFT, 0, 0, 0, 0, 0, 0, /* 65-80 */
SPITZ_KEY_MAIL, KEY_Z, KEY_X, KEY_MINUS, KEY_SPACE, KEY_COMMA, 0, KEY_UP, 0, 0, SPITZ_KEY_FN, 0, 0, 0, 0, 0, /* 81-96 */
KEY_SYSRQ, SPITZ_KEY_JAP1, SPITZ_KEY_JAP2, SPITZ_KEY_CANCEL, SPITZ_KEY_OK, SPITZ_KEY_MENU, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0, 0, 0, 0 /* 97-112 */
};

30
drivers/input/misc/wistron_btns.c
View file

@ -273,6 +273,18 @@ static struct key_entry keymap_fs_amilo_pro_v2000[] = {
{ KE_END, 0 }
};
static struct key_entry keymap_fujitsu_n3510[] = {
{ KE_KEY, 0x11, KEY_PROG1 },
{ KE_KEY, 0x12, KEY_PROG2 },
{ KE_KEY, 0x36, KEY_WWW },
{ KE_KEY, 0x31, KEY_MAIL },
{ KE_KEY, 0x71, KEY_STOPCD },
{ KE_KEY, 0x72, KEY_PLAYPAUSE },
{ KE_KEY, 0x74, KEY_REWIND },
{ KE_KEY, 0x78, KEY_FORWARD },
{ KE_END, 0 }
};
static struct key_entry keymap_wistron_ms2141[] = {
{ KE_KEY, 0x11, KEY_PROG1 },
{ KE_KEY, 0x12, KEY_PROG2 },
@ -321,6 +333,24 @@ static struct dmi_system_id dmi_ids[] = {
},
.driver_data = keymap_fs_amilo_pro_v2000
},
{
.callback = dmi_matched,
.ident = "Fujitsu-Siemens Amilo M7400",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "AMILO M "),
},
.driver_data = keymap_fs_amilo_pro_v2000
},
{
.callback = dmi_matched,
.ident = "Fujitsu N3510",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "N3510"),
},
.driver_data = keymap_fujitsu_n3510
},
{
.callback = dmi_matched,
.ident = "Acer Aspire 1500",

4
drivers/input/mouse/psmouse-base.c
View file

@ -302,8 +302,10 @@ static irqreturn_t psmouse_interrupt(struct serio *serio,
* Check if this is a new device announcement (0xAA 0x00)
*/
if (unlikely(psmouse->packet[0] == PSMOUSE_RET_BAT && psmouse->pktcnt <= 2)) {
if (psmouse->pktcnt == 1)
if (psmouse->pktcnt == 1) {
psmouse->last = jiffies;
goto out;
}
if (psmouse->packet[1] == PSMOUSE_RET_ID) {
__psmouse_set_state(psmouse, PSMOUSE_IGNORE);

452
drivers/input/touchscreen/ads7846.c
View file

@ -2,6 +2,8 @@
* ADS7846 based touchscreen and sensor driver
*
* Copyright (c) 2005 David Brownell
* Copyright (c) 2006 Nokia Corporation
* Various changes: Imre Deak <imre.deak@nokia.com>
*
* Using code from:
* - corgi_ts.c
@ -34,17 +36,25 @@
/*
* This code has been lightly tested on an ads7846.
* This code has been tested on an ads7846 / N770 device.
* Support for ads7843 and ads7845 has only been stubbed in.
*
* Not yet done: investigate the values reported. Are x/y/pressure
* event values sane enough for X11? How accurate are the temperature
* and voltage readings? (System-specific calibration should support
* Not yet done: How accurate are the temperature and voltage
* readings? (System-specific calibration should support
* accuracy of 0.3 degrees C; otherwise it's 2.0 degrees.)
*
* IRQ handling needs a workaround because of a shortcoming in handling
* edge triggered IRQs on some platforms like the OMAP1/2. These
* platforms don't handle the ARM lazy IRQ disabling properly, thus we
* have to maintain our own SW IRQ disabled status. This should be
* removed as soon as the affected platform's IRQ handling is fixed.
*
* app note sbaa036 talks in more detail about accurate sampling...
* that ought to help in situations like LCDs inducing noise (which
* can also be helped by using synch signals) and more generally.
* This driver tries to utilize the measures described in the app
* note. The strength of filtering can be set in the board-* specific
* files.
*/
#define TS_POLL_PERIOD msecs_to_jiffies(10)
@ -61,6 +71,7 @@ struct ts_event {
__be16 x;
__be16 y;
__be16 z1, z2;
int ignore;
};
struct ads7846 {
@ -71,12 +82,23 @@ struct ads7846 {
u16 model;
u16 vref_delay_usecs;
u16 x_plate_ohms;
u16 pressure_max;
u8 read_x, read_y, read_z1, read_z2;
u8 read_x, read_y, read_z1, read_z2, pwrdown;
u16 dummy; /* for the pwrdown read */
struct ts_event tc;
struct spi_transfer xfer[8];
struct spi_message msg;
struct spi_transfer xfer[10];
struct spi_message msg[5];
struct spi_message *last_msg;
int msg_idx;
int read_cnt;
int read_rep;
int last_read;
u16 debounce_max;
u16 debounce_tol;
u16 debounce_rep;
spinlock_t lock;
struct timer_list timer; /* P: lock */
@ -84,6 +106,9 @@ struct ads7846 {
unsigned pending:1; /* P: lock */
// FIXME remove "irq_disabled"
unsigned irq_disabled:1; /* P: lock */
unsigned disabled:1;
int (*get_pendown_state)(void);
};
/* leave chip selected when we're done, for quicker re-select? */
@ -125,7 +150,9 @@ struct ads7846 {
#define READ_Y (READ_12BIT_DFR(y) | ADS_PD10_ADC_ON)
#define READ_Z1 (READ_12BIT_DFR(z1) | ADS_PD10_ADC_ON)
#define READ_Z2 (READ_12BIT_DFR(z2) | ADS_PD10_ADC_ON)
#define READ_X (READ_12BIT_DFR(x) | ADS_PD10_PDOWN) /* LAST */
#define READ_X (READ_12BIT_DFR(x) | ADS_PD10_ADC_ON)
#define PWRDOWN (READ_12BIT_DFR(y) | ADS_PD10_PDOWN) /* LAST */
/* single-ended samples need to first power up reference voltage;
* we leave both ADC and VREF powered
@ -152,6 +179,15 @@ struct ser_req {
struct spi_transfer xfer[6];
};
static void ads7846_enable(struct ads7846 *ts);
static void ads7846_disable(struct ads7846 *ts);
static int device_suspended(struct device *dev)
{
struct ads7846 *ts = dev_get_drvdata(dev);
return dev->power.power_state.event != PM_EVENT_ON || ts->disabled;
}
static int ads7846_read12_ser(struct device *dev, unsigned command)
{
struct spi_device *spi = to_spi_device(dev);
@ -164,7 +200,7 @@ static int ads7846_read12_ser(struct device *dev, unsigned command)
if (!req)
return -ENOMEM;
INIT_LIST_HEAD(&req->msg.transfers);
spi_message_init(&req->msg);
/* activate reference, so it has time to settle; */
req->ref_on = REF_ON;
@ -204,8 +240,10 @@ static int ads7846_read12_ser(struct device *dev, unsigned command)
for (i = 0; i < 6; i++)
spi_message_add_tail(&req->xfer[i], &req->msg);
ts->irq_disabled = 1;
disable_irq(spi->irq);
status = spi_sync(spi, &req->msg);
ts->irq_disabled = 0;
enable_irq(spi->irq);
if (req->msg.status)
@ -233,6 +271,52 @@ SHOW(temp1)
SHOW(vaux)
SHOW(vbatt)
static int is_pen_down(struct device *dev)
{
struct ads7846 *ts = dev_get_drvdata(dev);
return ts->pendown;
}
static ssize_t ads7846_pen_down_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%u\n", is_pen_down(dev));
}
static DEVICE_ATTR(pen_down, S_IRUGO, ads7846_pen_down_show, NULL);
static ssize_t ads7846_disable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ads7846 *ts = dev_get_drvdata(dev);
return sprintf(buf, "%u\n", ts->disabled);
}
static ssize_t ads7846_disable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct ads7846 *ts = dev_get_drvdata(dev);
char *endp;
int i;
i = simple_strtoul(buf, &endp, 10);
spin_lock_irq(&ts->lock);
if (i)
ads7846_disable(ts);
else
ads7846_enable(ts);
spin_unlock_irq(&ts->lock);
return count;
}
static DEVICE_ATTR(disable, 0664, ads7846_disable_show, ads7846_disable_store);
/*--------------------------------------------------------------------------*/
/*
@ -264,7 +348,7 @@ static void ads7846_rx(void *ads)
if (x == MAX_12BIT)
x = 0;
if (x && z1 && ts->spi->dev.power.power_state.event == PM_EVENT_ON) {
if (likely(x && z1 && !device_suspended(&ts->spi->dev))) {
/* compute touch pressure resistance using equation #2 */
Rt = z2;
Rt -= z1;
@ -275,6 +359,14 @@ static void ads7846_rx(void *ads)
} else
Rt = 0;
/* Sample found inconsistent by debouncing or pressure is beyond
* the maximum. Don't report it to user space, repeat at least
* once more the measurement */
if (ts->tc.ignore || Rt > ts->pressure_max) {
mod_timer(&ts->timer, jiffies + TS_POLL_PERIOD);
return;
}
/* NOTE: "pendown" is inferred from pressure; we don't rely on
* being able to check nPENIRQ status, or "friendly" trigger modes
* (both-edges is much better than just-falling or low-level).
@ -296,11 +388,13 @@ static void ads7846_rx(void *ads)
if (Rt) {
input_report_abs(input_dev, ABS_X, x);
input_report_abs(input_dev, ABS_Y, y);
input_report_abs(input_dev, ABS_PRESSURE, Rt);
sync = 1;
}
if (sync)
if (sync) {
input_report_abs(input_dev, ABS_PRESSURE, Rt);
input_sync(input_dev);
}
#ifdef VERBOSE
if (Rt || ts->pendown)
@ -308,80 +402,138 @@ static void ads7846_rx(void *ads)
x, y, Rt, Rt ? "" : " UP");
#endif
/* don't retrigger while we're suspended */
spin_lock_irqsave(&ts->lock, flags);
ts->pendown = (Rt != 0);
ts->pending = 0;
if (ts->spi->dev.power.power_state.event == PM_EVENT_ON) {
if (ts->pendown)
mod_timer(&ts->timer, jiffies + TS_POLL_PERIOD);
else if (ts->irq_disabled) {
ts->irq_disabled = 0;
enable_irq(ts->spi->irq);
}
}
mod_timer(&ts->timer, jiffies + TS_POLL_PERIOD);
spin_unlock_irqrestore(&ts->lock, flags);
}
static void ads7846_debounce(void *ads)
{
struct ads7846 *ts = ads;
struct spi_message *m;
struct spi_transfer *t;
int val;
int status;
m = &ts->msg[ts->msg_idx];
t = list_entry(m->transfers.prev, struct spi_transfer, transfer_list);
val = (*(u16 *)t->rx_buf) >> 3;
if (!ts->read_cnt || (abs(ts->last_read - val) > ts->debounce_tol)) {
/* Repeat it, if this was the first read or the read
* wasn't consistent enough. */
if (ts->read_cnt < ts->debounce_max) {
ts->last_read = val;
ts->read_cnt++;
} else {
/* Maximum number of debouncing reached and still
* not enough number of consistent readings. Abort
* the whole sample, repeat it in the next sampling
* period.
*/
ts->tc.ignore = 1;
ts->read_cnt = 0;
/* Last message will contain ads7846_rx() as the
* completion function.
*/
m = ts->last_msg;
}
/* Start over collecting consistent readings. */
ts->read_rep = 0;
} else {
if (++ts->read_rep > ts->debounce_rep) {
/* Got a good reading for this coordinate,
* go for the next one. */
ts->tc.ignore = 0;
ts->msg_idx++;
ts->read_cnt = 0;
ts->read_rep = 0;
m++;
} else
/* Read more values that are consistent. */
ts->read_cnt++;
}
status = spi_async(ts->spi, m);
if (status)
dev_err(&ts->spi->dev, "spi_async --> %d\n",
status);
}
static void ads7846_timer(unsigned long handle)
{
struct ads7846 *ts = (void *)handle;
int status = 0;
unsigned long flags;
spin_lock_irqsave(&ts->lock, flags);
if (!ts->pending) {
ts->pending = 1;
if (!ts->irq_disabled) {
ts->irq_disabled = 1;
disable_irq(ts->spi->irq);
spin_lock_irq(&ts->lock);
if (unlikely(ts->msg_idx && !ts->pendown)) {
/* measurment cycle ended */
if (!device_suspended(&ts->spi->dev)) {
ts->irq_disabled = 0;
enable_irq(ts->spi->irq);
}
status = spi_async(ts->spi, &ts->msg);
ts->pending = 0;
ts->msg_idx = 0;
} else {
/* pen is still down, continue with the measurement */
ts->msg_idx = 0;
status = spi_async(ts->spi, &ts->msg[0]);
if (status)
dev_err(&ts->spi->dev, "spi_async --> %d\n",
status);
dev_err(&ts->spi->dev, "spi_async --> %d\n", status);
}
spin_unlock_irqrestore(&ts->lock, flags);
spin_unlock_irq(&ts->lock);
}
static irqreturn_t ads7846_irq(int irq, void *handle, struct pt_regs *regs)
{
ads7846_timer((unsigned long) handle);
struct ads7846 *ts = handle;
unsigned long flags;
spin_lock_irqsave(&ts->lock, flags);
if (likely(ts->get_pendown_state())) {
if (!ts->irq_disabled) {
/* REVISIT irq logic for many ARM chips has cloned a
* bug wherein disabling an irq in its handler won't
* work;(it's disabled lazily, and too late to work.
* until all their irq logic is fixed, we must shadow
* that state here.
*/
ts->irq_disabled = 1;
disable_irq(ts->spi->irq);
ts->pending = 1;
mod_timer(&ts->timer, jiffies);
}
}
spin_unlock_irqrestore(&ts->lock, flags);
return IRQ_HANDLED;
}
/*--------------------------------------------------------------------------*/
static int
ads7846_suspend(struct spi_device *spi, pm_message_t message)
/* Must be called with ts->lock held */
static void ads7846_disable(struct ads7846 *ts)
{
struct ads7846 *ts = dev_get_drvdata(&spi->dev);
unsigned long flags;
if (ts->disabled)
return;
spin_lock_irqsave(&ts->lock, flags);
spi->dev.power.power_state = message;
ts->disabled = 1;
/* are we waiting for IRQ, or polling? */
if (!ts->pendown) {
if (!ts->irq_disabled) {
ts->irq_disabled = 1;
disable_irq(ts->spi->irq);
}
if (!ts->pending) {
ts->irq_disabled = 1;
disable_irq(ts->spi->irq);
} else {
/* polling; force a final SPI completion;
* that will clean things up neatly
/* the timer will run at least once more, and
* leave everything in a clean state, IRQ disabled
*/
if (!ts->pending)
mod_timer(&ts->timer, jiffies);
while (ts->pendown || ts->pending) {
spin_unlock_irqrestore(&ts->lock, flags);
udelay(10);
spin_lock_irqsave(&ts->lock, flags);
while (ts->pending) {
spin_unlock_irq(&ts->lock);
msleep(1);
spin_lock_irq(&ts->lock);
}
}
@ -389,17 +541,45 @@ ads7846_suspend(struct spi_device *spi, pm_message_t message)
* leave it that way after every request
*/
spin_unlock_irqrestore(&ts->lock, flags);
}
/* Must be called with ts->lock held */
static void ads7846_enable(struct ads7846 *ts)
{
if (!ts->disabled)
return;
ts->disabled = 0;
ts->irq_disabled = 0;
enable_irq(ts->spi->irq);
}
static int ads7846_suspend(struct spi_device *spi, pm_message_t message)
{
struct ads7846 *ts = dev_get_drvdata(&spi->dev);
spin_lock_irq(&ts->lock);
spi->dev.power.power_state = message;
ads7846_disable(ts);
spin_unlock_irq(&ts->lock);
return 0;
}
static int ads7846_resume(struct spi_device *spi)
{
struct ads7846 *ts = dev_get_drvdata(&spi->dev);
ts->irq_disabled = 0;
enable_irq(ts->spi->irq);
spin_lock_irq(&ts->lock);
spi->dev.power.power_state = PMSG_ON;
ads7846_enable(ts);
spin_unlock_irq(&ts->lock);
return 0;
}
@ -408,6 +588,7 @@ static int __devinit ads7846_probe(struct spi_device *spi)
struct ads7846 *ts;
struct input_dev *input_dev;
struct ads7846_platform_data *pdata = spi->dev.platform_data;
struct spi_message *m;
struct spi_transfer *x;
int err;
@ -428,6 +609,11 @@ static int __devinit ads7846_probe(struct spi_device *spi)
return -EINVAL;
}
if (pdata->get_pendown_state == NULL) {
dev_dbg(&spi->dev, "no get_pendown_state function?\n");
return -EINVAL;
}
/* We'd set the wordsize to 12 bits ... except that some controllers
* will then treat the 8 bit command words as 12 bits (and drop the
* four MSBs of the 12 bit result). Result: inputs must be shifted
@ -451,9 +637,21 @@ static int __devinit ads7846_probe(struct spi_device *spi)
ts->timer.data = (unsigned long) ts;
ts->timer.function = ads7846_timer;
spin_lock_init(&ts->lock);
ts->model = pdata->model ? : 7846;
ts->vref_delay_usecs = pdata->vref_delay_usecs ? : 100;
ts->x_plate_ohms = pdata->x_plate_ohms ? : 400;
ts->pressure_max = pdata->pressure_max ? : ~0;
if (pdata->debounce_max) {
ts->debounce_max = pdata->debounce_max;
ts->debounce_tol = pdata->debounce_tol;
ts->debounce_rep = pdata->debounce_rep;
if (ts->debounce_rep > ts->debounce_max + 1)
ts->debounce_rep = ts->debounce_max - 1;
} else
ts->debounce_tol = ~0;
ts->get_pendown_state = pdata->get_pendown_state;
snprintf(ts->phys, sizeof(ts->phys), "%s/input0", spi->dev.bus_id);
@ -477,60 +675,100 @@ static int __devinit ads7846_probe(struct spi_device *spi)
/* set up the transfers to read touchscreen state; this assumes we
* use formula #2 for pressure, not #3.
*/
INIT_LIST_HEAD(&ts->msg.transfers);
m = &ts->msg[0];
x = ts->xfer;
spi_message_init(m);
/* y- still on; turn on only y+ (and ADC) */
ts->read_y = READ_Y;
x->tx_buf = &ts->read_y;
x->len = 1;
spi_message_add_tail(x, &ts->msg);
spi_message_add_tail(x, m);
x++;
x->rx_buf = &ts->tc.y;
x->len = 2;
spi_message_add_tail(x, &ts->msg);
spi_message_add_tail(x, m);
/* turn y+ off, x- on; we'll use formula #2 */
if (ts->model == 7846) {
x++;
ts->read_z1 = READ_Z1;
x->tx_buf = &ts->read_z1;
x->len = 1;
spi_message_add_tail(x, &ts->msg);
m->complete = ads7846_debounce;
m->context = ts;
x++;
x->rx_buf = &ts->tc.z1;
x->len = 2;
spi_message_add_tail(x, &ts->msg);
x++;
ts->read_z2 = READ_Z2;
x->tx_buf = &ts->read_z2;
x->len = 1;
spi_message_add_tail(x, &ts->msg);
x++;
x->rx_buf = &ts->tc.z2;
x->len = 2;
spi_message_add_tail(x, &ts->msg);
}
m++;
spi_message_init(m);
/* turn y- off, x+ on, then leave in lowpower */
x++;
ts->read_x = READ_X;
x->tx_buf = &ts->read_x;
x->len = 1;
spi_message_add_tail(x, &ts->msg);
spi_message_add_tail(x, m);
x++;
x->rx_buf = &ts->tc.x;
x->len = 2;
CS_CHANGE(*x);
spi_message_add_tail(x, &ts->msg);
spi_message_add_tail(x, m);
ts->msg.complete = ads7846_rx;
ts->msg.context = ts;
m->complete = ads7846_debounce;
m->context = ts;
/* turn y+ off, x- on; we'll use formula #2 */
if (ts->model == 7846) {
m++;
spi_message_init(m);
x++;
ts->read_z1 = READ_Z1;
x->tx_buf = &ts->read_z1;
x->len = 1;
spi_message_add_tail(x, m);
x++;
x->rx_buf = &ts->tc.z1;
x->len = 2;
spi_message_add_tail(x, m);
m->complete = ads7846_debounce;
m->context = ts;
m++;
spi_message_init(m);
x++;
ts->read_z2 = READ_Z2;
x->tx_buf = &ts->read_z2;
x->len = 1;
spi_message_add_tail(x, m);
x++;
x->rx_buf = &ts->tc.z2;
x->len = 2;
spi_message_add_tail(x, m);
m->complete = ads7846_debounce;
m->context = ts;
}
/* power down */
m++;
spi_message_init(m);
x++;
ts->pwrdown = PWRDOWN;
x->tx_buf = &ts->pwrdown;
x->len = 1;
spi_message_add_tail(x, m);
x++;
x->rx_buf = &ts->dummy;
x->len = 2;
CS_CHANGE(*x);
spi_message_add_tail(x, m);
m->complete = ads7846_rx;
m->context = ts;
ts->last_msg = m;
if (request_irq(spi->irq, ads7846_irq,
SA_SAMPLE_RANDOM | SA_TRIGGER_FALLING,
@ -559,13 +797,27 @@ static int __devinit ads7846_probe(struct spi_device *spi)
device_create_file(&spi->dev, &dev_attr_vbatt);
device_create_file(&spi->dev, &dev_attr_vaux);
device_create_file(&spi->dev, &dev_attr_pen_down);
device_create_file(&spi->dev, &dev_attr_disable);
err = input_register_device(input_dev);
if (err)
goto err_free_irq;
goto err_remove_attr;
return 0;
err_free_irq:
err_remove_attr:
device_remove_file(&spi->dev, &dev_attr_disable);
device_remove_file(&spi->dev, &dev_attr_pen_down);
if (ts->model == 7846) {
device_remove_file(&spi->dev, &dev_attr_temp1);
device_remove_file(&spi->dev, &dev_attr_temp0);
}
if (ts->model != 7845)
device_remove_file(&spi->dev, &dev_attr_vbatt);
device_remove_file(&spi->dev, &dev_attr_vaux);
free_irq(spi->irq, ts);
err_free_mem:
input_free_device(input_dev);
@ -577,20 +829,24 @@ static int __devexit ads7846_remove(struct spi_device *spi)
{
struct ads7846 *ts = dev_get_drvdata(&spi->dev);
ads7846_suspend(spi, PMSG_SUSPEND);
free_irq(ts->spi->irq, ts);
if (ts->irq_disabled)
enable_irq(ts->spi->irq);
input_unregister_device(ts->input);
ads7846_suspend(spi, PMSG_SUSPEND);
device_remove_file(&spi->dev, &dev_attr_disable);
device_remove_file(&spi->dev, &dev_attr_pen_down);
if (ts->model == 7846) {
device_remove_file(&spi->dev, &dev_attr_temp0);
device_remove_file(&spi->dev, &dev_attr_temp1);
device_remove_file(&spi->dev, &dev_attr_temp0);
}
if (ts->model != 7845)
device_remove_file(&spi->dev, &dev_attr_vbatt);
device_remove_file(&spi->dev, &dev_attr_vaux);
input_unregister_device(ts->input);
free_irq(ts->spi->irq, ts);
/* suspend left the IRQ disabled */
enable_irq(ts->spi->irq);
kfree(ts);
dev_dbg(&spi->dev, "unregistered touchscreen\n");