On Sat, 24 Jan 2015, Markus Pargmann wrote: > This is the core driver for imx25 touchscreen/adc driver. The module > has one shared ADC and two different conversion queues which use the > ADC. The two queues are identical. Both can be used for general purpose > ADC but one is meant to be used for touchscreens. > > This driver is the core which manages the central components and > registers of the TSC/ADC unit. It manages the IRQs and forwards them to > the correct components. > > Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx> > Signed-off-by: Denis Carikli <denis@xxxxxxxxxx> > Acked-by: Jonathan Cameron <jic23@xxxxxxxxxx> > --- > > Notes: > Changes in v5: > - Remove ifdef CONFIG_OF as this driver is only for DT usage > - Remove module owner > - Add Kconfig dependencies ARCH_MX25 and OF > > @Jonathan Cameron: > I left your acked-by on the patch as these were small changes. If it should be > removed, please say so. Thanks > > drivers/mfd/Kconfig | 10 +++ > drivers/mfd/Makefile | 2 + > drivers/mfd/fsl-imx25-tsadc.c | 167 ++++++++++++++++++++++++++++++++++++++++ > include/linux/mfd/imx25-tsadc.h | 140 +++++++++++++++++++++++++++++++++ > 4 files changed, 319 insertions(+) > create mode 100644 drivers/mfd/fsl-imx25-tsadc.c > create mode 100644 include/linux/mfd/imx25-tsadc.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 2e6b7311fabc..44fc15598a6a 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -232,6 +232,16 @@ config MFD_MC13XXX_I2C > help > Select this if your MC13xxx is connected via an I2C bus. > > +config MFD_MX25_TSADC > + tristate "Freescale i.MX25 integrated Touchscreen and ADC unit" > + select REGMAP_MMIO > + depends on SOC_IMX25 > + depends on OF > + help > + Enable support for the integrated Touchscreen and ADC unit of the > + i.MX25 processors. They consist of a conversion queue for general > + purpose ADC and a queue for Touchscreens. > + > config MFD_HI6421_PMIC > tristate "HiSilicon Hi6421 PMU/Codec IC" > depends on OF > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index 53467e211381..3feeb29f5938 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -78,6 +78,8 @@ obj-$(CONFIG_TWL4030_POWER) += twl4030-power.o > obj-$(CONFIG_MFD_TWL4030_AUDIO) += twl4030-audio.o > obj-$(CONFIG_TWL6040_CORE) += twl6040.o > > +obj-$(CONFIG_MFD_MX25_TSADC) += fsl-imx25-tsadc.o > + > obj-$(CONFIG_MFD_MC13XXX) += mc13xxx-core.o > obj-$(CONFIG_MFD_MC13XXX_SPI) += mc13xxx-spi.o > obj-$(CONFIG_MFD_MC13XXX_I2C) += mc13xxx-i2c.o > diff --git a/drivers/mfd/fsl-imx25-tsadc.c b/drivers/mfd/fsl-imx25-tsadc.c > new file mode 100644 > index 000000000000..8e4013d57500 > --- /dev/null > +++ b/drivers/mfd/fsl-imx25-tsadc.c > @@ -0,0 +1,167 @@ > +/* > + * Copyright 2014 Markus Pargmann, Pengutronix <mpa@xxxxxxxxxxxxxx> > + * > + * The code contained herein is licensed under the GNU General Public > + * License. You may obtain a copy of the GNU General Public License > + * Version 2 or later at the following locations: > + * > + * http://www.opensource.org/licenses/gpl-license.html > + * http://www.gnu.org/copyleft/gpl.html > + */ > + > +#include <linux/clk.h> > +#include <linux/interrupt.h> > +#include <linux/irqchip/chained_irq.h> > +#include <linux/irqdesc.h> > +#include <linux/irqdomain.h> > +#include <linux/irq.h> > +#include <linux/mfd/imx25-tsadc.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/of_platform.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> [...] > +static int mx25_tsadc_setup_irq(struct platform_device *pdev, > + struct mx25_tsadc *tsadc) > +{ > + struct device *dev = &pdev->dev; > + struct device_node *np = dev->of_node; > + int irq; > + > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) { What if 0 is returned? > + dev_err(dev, "Failed to get irq\n"); > + return irq; > + } > + > + tsadc->domain = irq_domain_add_simple(np, 2, 0, &mx25_tsadc_domain_ops, > + tsadc); > + if (!tsadc->domain) { > + dev_err(dev, "Failed to add irq domain\n"); > + return -ENOMEM; > + } > + > + irq_set_chained_handler(irq, mx25_tsadc_irq_handler); > + irq_set_handler_data(irq, tsadc); > + > + return 0; > +} > diff --git a/include/linux/mfd/imx25-tsadc.h b/include/linux/mfd/imx25-tsadc.h > new file mode 100644 > index 000000000000..8086f18847fe > --- /dev/null > +++ b/include/linux/mfd/imx25-tsadc.h > @@ -0,0 +1,140 @@ > +#ifndef _LINUX_INCLUDE_INPUT_IMX25_TSADC_H_ > +#define _LINUX_INCLUDE_INPUT_IMX25_TSADC_H_ INPUT? -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
