static void ts_interrupt_main(struct corgi_ts *corgi_ts, int isTimer)
{
if ((GPLR(IRQ_TO_GPIO(corgi_ts->irq_gpio)) & GPIO_bit(IRQ_TO_GPIO(corgi_ts->irq_gpio))) == 0) {
/* Disable Interrupt */
set_irq_type(corgi_ts->irq_gpio, IRQ_TYPE_NONE);
if (read_xydata(corgi_ts)) {
corgi_ts->pendown = 1;
new_data(corgi_ts);
}
mod_timer(&corgi_ts->timer, jiffies + HZ / 100);
} else {
if (corgi_ts->pendown == 1 || corgi_ts->pendown == 2) {
mod_timer(&corgi_ts->timer, jiffies + HZ / 100);
corgi_ts->pendown++;
return;
}
if (corgi_ts->pendown) {
corgi_ts->tc.pressure = 0;
new_data(corgi_ts);
}
/* Enable Falling Edge */
set_irq_type(corgi_ts->irq_gpio, IRQ_TYPE_EDGE_FALLING);
corgi_ts->pendown = 0;
}
}
static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt)
{
soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_CD_VALID), IRQ_TYPE_NONE);
set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_CD_VALID), IRQ_TYPE_NONE);
set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_RDYINT), IRQ_TYPE_NONE);
set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_RDYINT), IRQ_TYPE_NONE);
}
static void __init cmx270_init_irq(void)
{
pxa27x_init_irq();
cmx270_pci_init_irq();
/* Setup interrupt for dm9000 */
pxa_gpio_mode(IRQ_TO_GPIO(CMX270_ETHIRQ));
set_irq_type(CMX270_ETHIRQ, IRQT_RISING);
/* Setup interrupt for 2700G */
pxa_gpio_mode(IRQ_TO_GPIO(CMX270_GFXIRQ));
set_irq_type(CMX270_GFXIRQ, IRQT_FALLING);
}
static int cmx270_mci_init(struct device *dev,
irq_handler_t cmx270_detect_int,
void *data)
{
int err;
/*
* setup GPIO for PXA27x MMC controller
*/
pxa_gpio_mode(GPIO32_MMCCLK_MD);
pxa_gpio_mode(GPIO112_MMCCMD_MD);
pxa_gpio_mode(GPIO92_MMCDAT0_MD);
pxa_gpio_mode(GPIO109_MMCDAT1_MD);
pxa_gpio_mode(GPIO110_MMCDAT2_MD);
pxa_gpio_mode(GPIO111_MMCDAT3_MD);
/* SB-X270 uses GPIO105 as SD power enable */
pxa_gpio_mode(105 | GPIO_OUT);
/* card detect IRQ on GPIO 83 */
pxa_gpio_mode(IRQ_TO_GPIO(CMX270_MMC_IRQ));
set_irq_type(CMX270_MMC_IRQ, IRQT_FALLING);
err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int,
IRQF_DISABLED | IRQF_TRIGGER_FALLING,
"MMC card detect", data);
if (err) {
printk(KERN_ERR "cmx270_mci_init: MMC/SD: can't"
" request MMC card detect IRQ\n");
return -1;
}
return 0;
}
// open() 함수를 이용하여 디바이스 드라이버가 열린 경우 호출되는 함수
static int cis_open(struct inode *minode, struct file *mfile)
{
int res;
GPDR(IRQ_TO_GPIO(IRQ_CMOS)) &= ~GPIO_bit(IRQ_TO_GPIO(IRQ_CMOS));
set_irq_type(IRQ_CMOS, IRQ_TYPE_EDGE_RISING);
res = request_irq(IRQ_CMOS,cis_interrupt,IRQF_DISABLED,"FPGA CAMERA",NULL);
if(res < 0)
printk(KERN_ERR "%s: Request for IRQ %d failed\n",__FUNCTION__,IRQ_CMOS);
*mode_select = 0x00;
*sub_sampling = 0x00;
return 0;
}
void __cmx270_pci_init_irq(void)
{
it8152_init_irq();
pxa_gpio_mode(IRQ_TO_GPIO(GPIO_IT8152_IRQ));
set_irq_type(IRQ_GPIO(GPIO_IT8152_IRQ), IRQT_RISING);
set_irq_chained_handler(IRQ_GPIO(GPIO_IT8152_IRQ),
cmx270_it8152_irq_demux);
}
/****************************************************************************
*
* Interrupt handler, called whenever a keypress/release occurs
*
***************************************************************************/
static irqreturn_t keypad_gpio_irq(int irq, void *dev_id)
{
struct CBLK *bcm_kp = dev_id;
int gpio_pin = IRQ_TO_GPIO(irq);
disable_irq(irq);
reg_gpio_set_debounce_disable( gpio_pin );
keypad_scan( gpio_pin, bcm_kp );
reg_gpio_set_debounce_enable( gpio_pin );
reg_gpio_clear_interrupt( gpio_pin );
enable_irq(irq);
return IRQ_HANDLED;
}
static int pxa_gpio_irq_type(unsigned int irq, unsigned int type)
{
int gpio, idx;
gpio = IRQ_TO_GPIO(irq);
idx = gpio >> 5;
if (type == IRQT_PROBE) {
/* Don't mess with enabled GPIOs using preconfigured edges or
GPIOs set to alternate function or to output during probe */
if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx] | GPDR(gpio)) &
GPIO_bit(gpio))
return 0;
if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2)))
return 0;
type = __IRQT_RISEDGE | __IRQT_FALEDGE;
}
/* printk(KERN_DEBUG "IRQ%d (GPIO%d): ", irq, gpio); */
pxa_gpio_mode(gpio | GPIO_IN);
if (type & __IRQT_RISEDGE) {
/* printk("rising "); */
__set_bit (gpio, GPIO_IRQ_rising_edge);
} else
__clear_bit (gpio, GPIO_IRQ_rising_edge);
if (type & __IRQT_FALEDGE) {
/* printk("falling "); */
__set_bit (gpio, GPIO_IRQ_falling_edge);
} else
__clear_bit (gpio, GPIO_IRQ_falling_edge);
/* printk("edges\n"); */
GRER(gpio) = GPIO_IRQ_rising_edge[idx] & GPIO_IRQ_mask[idx];
GFER(gpio) = GPIO_IRQ_falling_edge[idx] & GPIO_IRQ_mask[idx];
return 0;
}
static irqreturn_t db5500_keypad_gpio_irq(int irq, void *dev_id)
{
struct db5500_keypad *keypad = dev_id;
if (!gpio_get_value(IRQ_TO_GPIO(irq))) {
db5500_manual_scan(keypad);
if (!keypad->enable) {
keypad->enable = true;
db5500_mode_enable(keypad, true);
}
/*
* Schedule the work queue to change it to
* report the key pressed, if it is not detected in keypad mode.
*/
if (keypad->valid_key) {
schedule_delayed_work(&keypad->gpio_work,
KEY_PRESSED_DELAY);
}
}
return IRQ_HANDLED;
}
static int __init corgits_probe(struct platform_device *pdev)
{
struct corgi_ts *corgi_ts;
struct input_dev *input_dev;
int err = -ENOMEM;
corgi_ts = kzalloc(sizeof(struct corgi_ts), GFP_KERNEL);
input_dev = input_allocate_device();
if (!corgi_ts || !input_dev)
goto fail1;
platform_set_drvdata(pdev, corgi_ts);
corgi_ts->machinfo = pdev->dev.platform_data;
corgi_ts->irq_gpio = platform_get_irq(pdev, 0);
if (corgi_ts->irq_gpio < 0) {
err = -ENODEV;
goto fail1;
}
corgi_ts->input = input_dev;
init_timer(&corgi_ts->timer);
corgi_ts->timer.data = (unsigned long) corgi_ts;
corgi_ts->timer.function = corgi_ts_timer;
input_dev->name = "Corgi Touchscreen";
input_dev->phys = "corgits/input0";
input_dev->id.bustype = BUS_HOST;
input_dev->id.vendor = 0x0001;
input_dev->id.product = 0x0002;
input_dev->id.version = 0x0100;
input_dev->dev.parent = &pdev->dev;
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
input_set_abs_params(input_dev, ABS_X, X_AXIS_MIN, X_AXIS_MAX, 0, 0);
input_set_abs_params(input_dev, ABS_Y, Y_AXIS_MIN, Y_AXIS_MAX, 0, 0);
input_set_abs_params(input_dev, ABS_PRESSURE, PRESSURE_MIN, PRESSURE_MAX, 0, 0);
pxa_gpio_mode(IRQ_TO_GPIO(corgi_ts->irq_gpio) | GPIO_IN);
/* Initiaize ADS7846 Difference Reference mode */
corgi_ssp_ads7846_putget((1u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
mdelay(5);
corgi_ssp_ads7846_putget((3u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
mdelay(5);
corgi_ssp_ads7846_putget((4u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
mdelay(5);
corgi_ssp_ads7846_putget((5u << ADSCTRL_ADR_SH) | ADSCTRL_STS);
mdelay(5);
if (request_irq(corgi_ts->irq_gpio, ts_interrupt, IRQF_DISABLED, "ts", corgi_ts)) {
err = -EBUSY;
goto fail1;
}
err = input_register_device(corgi_ts->input);
if (err)
goto fail2;
corgi_ts->power_mode = PWR_MODE_ACTIVE;
/* Enable Falling Edge */
set_irq_type(corgi_ts->irq_gpio, IRQ_TYPE_EDGE_FALLING);
return 0;
fail2: free_irq(corgi_ts->irq_gpio, corgi_ts);
fail1: input_free_device(input_dev);
kfree(corgi_ts);
return err;
}
static void lh7a404_vic2_ack_gpio_irq (u32 irq)
{
GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq));
VIC2_INTENCLR = (1 << irq);
}
static void lh7a400_ack_gpio_irq (u32 irq)
{
GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (irq));
INTC_INTENC = (1 << irq);
}
static void lh7a400_ack_gpio_irq(struct irq_data *d)
{
GPIO_GPIOFEOI = (1 << IRQ_TO_GPIO (d->irq));
INTC_INTENC = (1 << d->irq);
}
