static irqreturn_t mxskbd_irq_handler(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
struct mxskbd_data *devdata = platform_get_drvdata(pdev);
u16 raw_button, normalized_button, vddio;
unsigned btn;
if (devdata->btn_irq == irq) {
__raw_writel(devdata->btn_irq_stat,
devdata->base + HW_LRADC_CTRL1_CLR);
__raw_writel(BM_LRADC_CTRL1_LRADC0_IRQ << devdata->chan,
devdata->base + HW_LRADC_CTRL1_CLR);
__raw_writel(BM_LRADC_CTRL1_LRADC0_IRQ_EN << devdata->chan,
devdata->base + HW_LRADC_CTRL1_SET);
return IRQ_HANDLED;
}
raw_button = __raw_readl(devdata->base + HW_LRADC_CHn(devdata->chan)) &
BM_LRADC_CHn_VALUE;
vddio = hw_lradc_vddio();
BUG_ON(vddio == 0);
normalized_button = (raw_button * TARGET_VDDIO_LRADC_VALUE) /
vddio;
if (normalized_button < BUTTON_PRESS_THRESHOLD &&
devdata->last_button < 0) {
btn = mxskbd_decode_button(devdata->keycodes,
normalized_button);
if (btn < KEY_MAX) {
devdata->last_button = btn;
input_report_key(GET_INPUT_DEV(devdata),
devdata->last_button, !0);
} else
dev_err(&pdev->dev, "Invalid button: raw = %d, "
"normalized = %d, vddio = %d\n",
raw_button, normalized_button, vddio);
} else if (devdata->last_button > 0 &&
normalized_button >= BUTTON_PRESS_THRESHOLD) {
input_report_key(GET_INPUT_DEV(devdata),
devdata->last_button, 0);
devdata->last_button = -1;
if (devdata->btn_irq > 0)
__raw_writel(BM_LRADC_CTRL1_LRADC0_IRQ_EN <<
devdata->chan,
devdata->base + HW_LRADC_CTRL1_CLR);
}
__raw_writel(BM_LRADC_CTRL1_LRADC0_IRQ << devdata->chan,
devdata->base + HW_LRADC_CTRL1_CLR);
return IRQ_HANDLED;
}
static int __devexit mxskbd_remove(struct platform_device *pdev)
{
int i;
struct mxskbd_data *d = platform_get_drvdata(pdev);
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_destroy(&key_wake_lock);
#endif
for (i = 0; i < MAX_CH; i++)
hw_lradc_unuse_channel(d->chan[i]);
input_unregister_device(GET_INPUT_DEV(d));
if (d->btn_irq1 > 0)
free_irq(d->btn_irq1, pdev);
mxskbd_data_free(d);
platform_set_drvdata(pdev, NULL);
#ifdef ENABLE_BACKLIGHT_GPIO_CONTROL
_keypad_set_backlight(0);
#endif
return 0;
}
static void jack_process(struct mxskbd_data *d)
{
int pin;
int in;
int jack;
static int amp_on_cnt;
static int amp;
pin = !!mxs_audio_jack_gpio_get();
if (pin)
amp_on_cnt = 10;
else if (amp_on_cnt > 0)
amp_on_cnt--;
if (amp_on_cnt > 0) {
if (!amp) {
mxs_audio_headset_mic_detect_amp_gpio_set(1);
amp = 1;
}
} else {
if (amp) {
mxs_audio_headset_mic_detect_amp_gpio_set(0);
amp = 0;
}
}
if (!!d->jack_last == pin) {
d->jack_cnt = 0;
return;
}
if (++d->jack_cnt <= 6)
return;
if (pin == 0) { /* eject */
in = 0;
jack = d->jack_last;
d->jack_last = 0;
} else { /* insert */
int i = __raw_readl(d->base + HW_LRADC_CHn(d->chan[MAX_CH-1])) &
BM_LRADC_CHn_VALUE;
d->jack_last = (i > MIC_DET_THRESHOLD) ?
SW_MICROPHONE_INSERT : SW_HEADPHONE_INSERT;
in = 1;
jack = d->jack_last;
}
input_report_switch(GET_INPUT_DEV(d), jack, in);
}
static int __devexit mxskbd_remove(struct platform_device *pdev)
{
struct mxskbd_data *d = platform_get_drvdata(pdev);
hw_lradc_unuse_channel(d->chan);
input_unregister_device(GET_INPUT_DEV(d));
free_irq(d->irq, pdev);
if (d->btn_irq > 0)
free_irq(d->btn_irq, pdev);
mxskbd_data_free(d);
platform_set_drvdata(pdev, NULL);
return 0;
}
static int __devinit mxskbd_probe(struct platform_device *pdev)
{
int err = 0;
struct resource *res;
struct mxskbd_data *d;
struct mxs_kbd_plat_data *plat_data;
plat_data = (struct mxs_kbd_plat_data *)pdev->dev.platform_data;
if (plat_data == NULL)
return -ENODEV;
/* Create and register the input driver. */
d = mxskbd_data_alloc(pdev, plat_data->keypair);
if (!d) {
dev_err(&pdev->dev, "Cannot allocate driver structures\n");
err = -ENOMEM;
goto err_out;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
err = -ENODEV;
goto err_out;
}
d->base = (unsigned int)IO_ADDRESS(res->start);
d->chan = plat_data->channel;
d->irq = platform_get_irq(pdev, 0);
d->btn_irq = platform_get_irq(pdev, 1);
d->btn_enable = plat_data->btn_enable;
d->btn_irq_stat = plat_data->btn_irq_stat;
d->btn_irq_ctrl = plat_data->btn_irq_ctrl;
platform_set_drvdata(pdev, d);
err = request_irq(d->irq, mxskbd_irq_handler,
IRQF_DISABLED, pdev->name, pdev);
if (err) {
dev_err(&pdev->dev, "Cannot request keypad IRQ\n");
goto err_free_dev;
}
if (d->btn_irq > 0) {
err = request_irq(d->btn_irq, mxskbd_irq_handler,
IRQF_DISABLED, pdev->name, pdev);
if (err) {
dev_err(&pdev->dev,
"Cannot request keybad detect IRQ\n");
goto err_free_irq;
}
}
/* Register the input device */
err = input_register_device(GET_INPUT_DEV(d));
if (err)
goto err_free_irq2;
/* these two have to be set after registering the input device */
d->input->rep[REP_DELAY] = delay1;
d->input->rep[REP_PERIOD] = delay2;
hw_lradc_use_channel(d->chan);
mxskbd_hwinit(pdev);
return 0;
err_free_irq2:
platform_set_drvdata(pdev, NULL);
if (d->btn_irq > 0)
free_irq(d->btn_irq, pdev);
err_free_irq:
free_irq(d->irq, pdev);
err_free_dev:
mxskbd_data_free(d);
err_out:
return err;
}
static int __devinit mxskbd_probe(struct platform_device *pdev)
{
int i;
int err = 0;
struct resource *res;
struct mxskbd_data *d;
struct mxs_kbd_plat_data *plat_data;
plat_data = (struct mxs_kbd_plat_data *)pdev->dev.platform_data;
if (plat_data == NULL)
return -ENODEV;
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_init(&key_wake_lock, WAKE_LOCK_SUSPEND, "mxs-keypad");
#endif
/* Create and register the input driver. */
d = mxskbd_data_alloc(pdev, plat_data->keypair,
plat_data->keypair_offset);
if (!d) {
dev_err(&pdev->dev, "Cannot allocate driver structures\n");
err = -ENOMEM;
goto err_out;
}
_devdata = d;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
err = -ENODEV;
goto err_out;
}
d->base = (unsigned int)IO_ADDRESS(res->start);
for (i = 0; i < MAX_CH; i++)
d->chan[i] = plat_data->channel[i];
d->btn_irq1 = platform_get_irq(pdev, 0);
platform_set_drvdata(pdev, d);
if (d->btn_irq1 > 0) {
err = request_irq(d->btn_irq1, mxskbd_irq_handler,
IRQF_DISABLED, pdev->name, pdev);
if (err) {
dev_err(&pdev->dev, "Cannot request keypad IRQ\n");
goto err_free_dev;
}
}
/* Register the input device */
err = input_register_device(GET_INPUT_DEV(d));
if (err)
goto err_free_dev;
/* these two have to be set after registering the input device */
d->input->rep[REP_DELAY] = delay1;
d->input->rep[REP_PERIOD] = delay2;
for (i = 0; i < MAX_CH; i++)
hw_lradc_use_channel(d->chan[i]);
mxskbd_hwinit(pdev);
#ifdef ENABLE_BACKLIGHT_GPIO_CONTROL
init_timer(&_bl_timer);
_bl_timer.function = _keypad_bl_timer_handler;
#endif
return 0;
err_free_dev:
if (d->btn_irq1 > 0)
free_irq(d->btn_irq1, pdev);
mxskbd_data_free(d);
err_out:
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_destroy(&key_wake_lock);
#endif
return err;
}
static irqreturn_t mxskbd_irq_handler(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
struct mxskbd_data *d = platform_get_drvdata(pdev);
int i, key, f_key = -1;
u32 vddio;
jack_process(d);
/* end key process */
i = (__raw_readl(REGS_POWER_BASE + HW_POWER_STS) &
BF_POWER_STS_PSWITCH(0x1)) ? KEY_END : -1;
if (i == KEY_END) {
if (i == d->last_button)
goto _end;
f_key = i;
}
if (f_key < 0 && d->jack_cnt == 0 &&
d->jack_last == SW_MICROPHONE_INSERT) {
i = __raw_readl(d->base + HW_LRADC_CHn(d->chan[MAX_CH-1])) &
BM_LRADC_CHn_VALUE;
if (i <= MIC_DET_THRESHOLD) {
if (d->last_button == KEY_KPENTER) {
d->jack_push_cnt = 0;
goto _end;
}
if (++d->jack_push_cnt > 4)
f_key = KEY_KPENTER;
} else
d->jack_push_cnt = 0;
} else
d->jack_push_cnt = 0;
/* adc key process */
vddio = __raw_readl(d->base + HW_LRADC_CHn(VDDIO_VOLTAGE_CH)) &
BM_LRADC_CHn_VALUE;
BUG_ON(vddio == 0);
#ifdef DUMP_KEY_ADC
static int val[MAX_CH];
printk("KEY=0x%03x(%4d), 0x%03x(%4d), 0x%03x(%4d), 0x%03x(%4d)\n",
val[0], val[0], val[1], val[1],
val[2], val[2], val[3], val[3]);
#endif
for (i = 0; i < MAX_CH-1; i++) {
int raw, norm;
raw = __raw_readl(d->base + HW_LRADC_CHn(d->chan[i])) &
BM_LRADC_CHn_VALUE;
norm = (raw * TARGET_VDDIO_LRADC_VALUE) / vddio;
key = mxskbd_decode_button(d->keycodes +
d->keycodes_offset*i, norm);
key = unjitter_key(i, key);
#ifdef DUMP_KEY_ADC
val[i] = raw;
#endif
if (key >= 0) {
if (key == d->last_button)
goto _end;
if (f_key < 0)
f_key = key;
}
}
key = volume_key_process(d);
if (key > 0) {
if (key == d->last_button)
goto _end;
if (f_key < 0)
f_key = key;
}
if (d->last_button >= 0) {
input_report_key(GET_INPUT_DEV(d), d->last_button, 0);
d->last_button = -1;
}
if (f_key >= 0 && f_key != d->last_button) {
input_report_key(GET_INPUT_DEV(d), f_key, !0);
#ifdef ENABLE_BACKLIGHT_GPIO_CONTROL
_keypad_set_backlight(1);
#endif
#ifdef CONFIG_HAS_WAKELOCK
wake_lock_timeout(&key_wake_lock, 5*HZ);
#endif
d->last_button = f_key;
}
_end:
__raw_writel((BM_LRADC_CTRL1_LRADC0_IRQ << d->chan[0]) +
(BM_LRADC_CTRL1_LRADC0_IRQ << d->chan[1]) +
(BM_LRADC_CTRL1_LRADC0_IRQ << d->chan[2]) +
(BM_LRADC_CTRL1_LRADC0_IRQ << d->chan[3]) +
(BM_LRADC_CTRL1_LRADC0_IRQ << VDDIO_VOLTAGE_CH),
d->base + HW_LRADC_CTRL1_CLR);
return IRQ_HANDLED;
}
