コード例 #1
0
static void mxskbd_hwinit(struct platform_device *pdev)
{
	int i;
	int mask = 0;
	struct mxskbd_data *d = platform_get_drvdata(pdev);

	for (i = 0; i < MAX_CH; i++) {
		hw_lradc_init_ladder(d->chan[i],
				     LRADC_DELAY_TRIGGER_BUTTON, LRADC_DELAY);
		mask |= BM_LRADC_CTRL1_LRADC0_IRQ << d->chan[i];
	}
	__raw_writel(mask, d->base + HW_LRADC_CTRL1_CLR);

	/* set vddio lradc manually */
	hw_lradc_configure_channel(VDDIO_VOLTAGE_CH, 0, 0, 0); /* no dev2 */
	hw_lradc_set_delay_trigger(LRADC_DELAY_TRIGGER_BUTTON,
				   1 << VDDIO_VOLTAGE_CH,
				   1 << LRADC_DELAY_TRIGGER_BUTTON,
				   0, LRADC_DELAY);

	/* used only one interrupt */
	__raw_writel(BM_LRADC_CTRL1_LRADC0_IRQ_EN << d->chan[0],
		     d->base + HW_LRADC_CTRL1_SET);


	hw_lradc_set_delay_trigger_kick(LRADC_DELAY_TRIGGER_BUTTON, !0);
}
コード例 #2
0
int hw_lradc_init_ladder(int channel, int trigger, unsigned sampling)
{
	/*
	 * check if the lradc channel is present in this product
	 */
	if (!hw_lradc_present(channel))
		return -ENODEV;

	hw_lradc_configure_channel(channel, !0 /* div2 */ ,
				   0 /* acc */ ,
				   0 /* num_samples */);

	/* Setup the trigger loop forever */
	hw_lradc_set_delay_trigger(trigger, 1 << channel,
				   1 << trigger, 0, sampling);

	/* Clear the accumulator & NUM_SAMPLES */
	__raw_writel(0xFFFFFFFF, mxs_lradc.base + HW_LRADC_CHn_CLR(channel));
	return 0;
}
コード例 #3
0
ファイル: stmp3xxx_ts.c プロジェクト: despierto/imx_233_linux
static int stmp3xxx_ts_probe(struct platform_device *pdev)
{
	struct input_dev *idev;
	struct stmp3xxx_ts_info *info;
	int ret = 0;
	struct resource *res;

	idev = input_allocate_device();
	info = kzalloc(sizeof(struct stmp3xxx_ts_info), GFP_KERNEL);
	if (idev == NULL || info == NULL) {
		ret = -ENOMEM;
		goto out_nomem;
	}

	idev->name = "STMP3XXX touchscreen";
	idev->evbit[0] = BIT(EV_ABS);
	input_set_abs_params(idev, ABS_X, 0, 0xFFF, 0, 0);
	input_set_abs_params(idev, ABS_Y, 0, 0xFFF, 0, 0);
	input_set_abs_params(idev, ABS_PRESSURE, 0, 1, 0, 0);

	ret = input_register_device(idev);
	if (ret)
		goto out_nomem;

	info->idev = idev;

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (!res) {
		printk(KERN_ERR "%s: couldn't get IRQ resource\n", __func__);
		ret = -ENODEV;
		goto out_nodev;
	}
	info->touch_irq = res->start;

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
	if (!res) {
		printk(KERN_ERR "%s: couldn't get IRQ resource\n", __func__);
		ret = -ENODEV;
		goto out_nodev;
	}
	info->device_irq = res->start;

	ret = request_irq(info->touch_irq, ts_handler, IRQF_DISABLED,
				"stmp3xxx_ts_touch", info);
	if (ret)
		goto out_nodev;

	ret = request_irq(info->device_irq, ts_handler, IRQF_DISABLED,
				"stmp3xxx_ts_dev", info);
	if (ret) {
		free_irq(info->touch_irq, info);
		goto out_nodev;
	}
	enter_state_touch_detect(info);

	hw_lradc_use_channel(LRADC_CH2);
	hw_lradc_use_channel(LRADC_CH3);
	hw_lradc_use_channel(LRADC_CH5);
	hw_lradc_configure_channel(LRADC_CH2, 0, 0, 0);
	hw_lradc_configure_channel(LRADC_CH3, 0, 0, 0);
	hw_lradc_configure_channel(LRADC_CH5, 0, 0, 0);

	/* Clear the accumulator & NUM_SAMPLES for the channels */
	__raw_writel(0xFFFFFFFF, REGS_LRADC_BASE + HW_LRADC_CHn_CLR(LRADC_CH2));
	__raw_writel(0xFFFFFFFF, REGS_LRADC_BASE + HW_LRADC_CHn_CLR(LRADC_CH3));
	__raw_writel(0xFFFFFFFF, REGS_LRADC_BASE + HW_LRADC_CHn_CLR(LRADC_CH5));

	hw_lradc_set_delay_trigger(LRADC_DELAY_TRIGGER_TOUCHSCREEN,
			0x3c, 0, 0, 8);

	__raw_writel(BM_LRADC_CTRL1_LRADC5_IRQ,
		REGS_LRADC_BASE + HW_LRADC_CTRL1_CLR);
	__raw_writel(BM_LRADC_CTRL1_TOUCH_DETECT_IRQ,
		REGS_LRADC_BASE + HW_LRADC_CTRL1_CLR);

	__raw_writel(BM_LRADC_CTRL1_LRADC5_IRQ_EN,
		REGS_LRADC_BASE + HW_LRADC_CTRL1_SET);
	__raw_writel(BM_LRADC_CTRL1_TOUCH_DETECT_IRQ_EN,
		REGS_LRADC_BASE + HW_LRADC_CTRL1_SET);

	platform_set_drvdata(pdev, info);
	device_init_wakeup(&pdev->dev, 1);
	goto out;

out_nodev:
	input_free_device(idev);
out_nomem:
	kfree(idev);
	kfree(info);
out:
	return ret;
}