This patch adds basic support for Freescale i.MX25 ADC in the IIO Subsystem.
It is provides direct access via sysfs, IRQ not used now.
Compile tested with linux-next.
Functionality tested with linux 3.3.0.
>From c57696f02b235837a67e2607da517bdcabaa72a5 Mon Sep 17 00:00:00 2001
From: ddarwish <darwish.d.d@xxxxxxxxx>
Date: Thu, 14 Feb 2013 11:59:07 +0400
Subject: [PATCH] simple Freescale i.MX25 ADC driver
---
arch/arm/mach-imx/clk-imx25.c | 2 +-
arch/arm/mach-imx/mx25.h | 1 +
drivers/staging/iio/adc/Kconfig | 12 +
drivers/staging/iio/adc/Makefile | 1 +
drivers/staging/iio/adc/imx25_adc.c | 456 +++++++++++++++++++++++++++++++++
drivers/staging/iio/adc/imx_adc.h | 13 +
drivers/staging/iio/adc/imx_adc_reg.h | 243 ++++++++++++++++++
7 files changed, 727 insertions(+), 1 deletion(-)
create mode 100644 drivers/staging/iio/adc/imx25_adc.c
create mode 100644 drivers/staging/iio/adc/imx_adc.h
create mode 100644 drivers/staging/iio/adc/imx_adc_reg.h
diff --git a/arch/arm/mach-imx/clk-imx25.c b/arch/arm/mach-imx/clk-imx25.c
index 2c570cd..e30a253 100644
--- a/arch/arm/mach-imx/clk-imx25.c
+++ b/arch/arm/mach-imx/clk-imx25.c
@@ -271,7 +271,7 @@ int __init mx25_clocks_init(void)
clk_register_clkdev(clk[pwm1_ipg], "ipg", "mxc_pwm.3");
clk_register_clkdev(clk[per10], "per", "mxc_pwm.3");
clk_register_clkdev(clk[kpp_ipg], NULL, "imx-keypad");
- clk_register_clkdev(clk[tsc_ipg], NULL, "mx25-adc");
+ clk_register_clkdev(clk[tsc_ipg], NULL, "imx25-adc");
clk_register_clkdev(clk[i2c_ipg_per], NULL, "imx21-i2c.0");
clk_register_clkdev(clk[i2c_ipg_per], NULL, "imx21-i2c.1");
clk_register_clkdev(clk[i2c_ipg_per], NULL, "imx21-i2c.2");
diff --git a/arch/arm/mach-imx/mx25.h b/arch/arm/mach-imx/mx25.h
index ec46640..b2e34fd 100644
--- a/arch/arm/mach-imx/mx25.h
+++ b/arch/arm/mach-imx/mx25.h
@@ -37,6 +37,7 @@
#define MX25_CSPI3_BASE_ADDR 0x50004000
#define MX25_CSPI2_BASE_ADDR 0x50010000
+#define MX25_TSC_BASE_ADDR 0x50030000
#define MX25_FEC_BASE_ADDR 0x50038000
#define MX25_SSI2_BASE_ADDR 0x50014000
#define MX25_SSI1_BASE_ADDR 0x50034000
diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index 7b2a01d..293f73b 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -130,6 +130,18 @@ config MXS_LRADC
To compile this driver as a module, choose M here: the
module will be called mxs-lradc.
+config IMX25_ADC
+ tristate "Freescale IMX25 ADC"
+ depends on ARCH_MXC
+ select IIO_BUFFER
+ select IIO_TRIGGER
+ select IIO_TRIGGERED_BUFFER
+ select SYSFS
+ help
+ Say yes here to build support for Freescale i.MX25 ADC built into these chips.
+ Provides direct access via sysfs.
+
+
config SPEAR_ADC
tristate "ST SPEAr ADC"
depends on PLAT_SPEAR
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index d285596..b64ec6d 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -21,3 +21,4 @@ obj-$(CONFIG_AD7280) += ad7280a.o
obj-$(CONFIG_LPC32XX_ADC) += lpc32xx_adc.o
obj-$(CONFIG_MXS_LRADC) += mxs-lradc.o
obj-$(CONFIG_SPEAR_ADC) += spear_adc.o
+obj-$(CONFIG_IMX25_ADC) += imx25_adc.o
diff --git a/drivers/staging/iio/adc/imx25_adc.c b/drivers/staging/iio/adc/imx25_adc.c
new file mode 100644
index 0000000..6d3b438
--- /dev/null
+++ b/drivers/staging/iio/adc/imx25_adc.c
@@ -0,0 +1,456 @@
+/**
+ * Copyright (c) 2013 Denis darwish
+ * Based on code by Freescale Semiconductor
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
+#include <linux/iio/buffer.h>
+
+ #include "imx_adc_reg.h"
+ #include "imx_adc.h"
+
+#define IMX_ADC_DATA_BITS (12)
+
+struct imx_adc_state {
+ struct clk *adc_clk;
+ unsigned long channels_mask;
+ u16 value;
+ struct mutex lock;
+ u8 num_channels;
+ void __iomem *reg_base;
+ u32 vref_mv;
+};
+
+static int adc_clk_enable(struct imx_adc_state *st)
+{
+ unsigned long reg;
+ int ret;
+
+ dev_info(NULL, "st point b2 %p \n", st);
+
+ ret = clk_enable(st->adc_clk);
+ reg = __raw_readl(st->reg_base + TGCR);
+ reg |= TGCR_IPG_CLK_EN;
+ __raw_writel(reg, st->reg_base + TGCR);
+ return (ret);
+}
+
+void adc_clk_disable(struct imx_adc_state *st)
+{
+ unsigned long reg;
+
+ clk_disable(st->adc_clk);
+ reg = __raw_readl(st->reg_base + TGCR);
+ reg &= ~TGCR_IPG_CLK_EN;
+ __raw_writel(reg, st->reg_base + TGCR);
+}
+
+void tsc_self_reset(struct imx_adc_state *st)
+{
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + TGCR);
+ reg |= TGCR_TSC_RST;
+ __raw_writel(reg, st->reg_base + TGCR);
+
+ while (__raw_readl(st->reg_base + TGCR) & TGCR_TSC_RST)
+ continue;
+}
+
+/* Internal reference */
+void tsc_intref_enable(struct imx_adc_state *st)
+{
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + TGCR);
+ reg |= TGCR_INTREFEN;
+ __raw_writel(reg, st->reg_base + TGCR);
+}
+
+/* Set power mode */
+void adc_set_power_mode(struct imx_adc_state *st)
+{
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + TGCR) & ~TGCR_POWER_MASK;
+ reg |= TGCR_POWER_ON;
+ __raw_writel(reg, st->reg_base + TGCR);
+}
+
+/* Set ADC clock configuration */
+void adc_set_clk(struct imx_adc_state *st) {
+
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + TGCR) & ~TGCR_ADCCLKCFG_MASK;
+ reg |= 31 << TGCR_ADCCLKCFG_SHIFT; //ADC clock = ipg_clk / (2*div+2)
+ __raw_writel(reg, st->reg_base + TGCR);
+}
+
+void adc_set_queue(struct imx_adc_state *st) {
+
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + GCQ_ITEM_7_0);
+ reg = (GCQ_ITEM_GCC0 << GCQ_ITEM0_SHIFT)
+ | (GCQ_ITEM_GCC1 << GCQ_ITEM1_SHIFT)
+ | (GCQ_ITEM_GCC2 << GCQ_ITEM2_SHIFT);
+ __raw_writel(reg, st->reg_base + GCQ_ITEM_7_0);
+
+ reg = TSC_GENERAL_ADC_GCC0;
+ reg |= (0 << CC_NOS_SHIFT) | (16 << CC_SETTLING_TIME_SHIFT);
+ __raw_writel(reg, st->reg_base + GCC0);
+ reg = TSC_GENERAL_ADC_GCC1;
+ reg |= (0 << CC_NOS_SHIFT) | (16 << CC_SETTLING_TIME_SHIFT);
+ __raw_writel(reg, st->reg_base + GCC1);
+ reg = TSC_GENERAL_ADC_GCC2;
+ reg |= (0 << CC_NOS_SHIFT) | (16 << CC_SETTLING_TIME_SHIFT);
+ __raw_writel(reg, st->reg_base + GCC2);
+
+
+ reg = __raw_readl(st->reg_base + GCQCR) & ~CQCR_LAST_ITEM_ID_MASK;
+ reg |= 0 << CQCR_LAST_ITEM_ID_SHIFT;
+ __raw_writel(reg, st->reg_base + GCQCR);
+
+ reg = __raw_readl(st->reg_base + GCQCR) & ~CQCR_QSM_MASK;
+ reg |= CQCR_QSM_FQS;
+ __raw_writel(reg, st->reg_base + GCQCR);
+
+ reg = __raw_readl(st->reg_base + GCQCR) & ~CQCR_FIFOWATERMARK_MASK;
+ reg |= (0x0 << CQCR_FIFOWATERMARK_SHIFT);
+ __raw_writel(reg, st->reg_base + GCQCR);
+}
+
+void imx_adc_set_chanel(struct imx_adc_state *st, u8 channel) {
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + GCQ_ITEM_7_0);
+ switch (channel) {
+ case 0:
+ reg = (GCQ_ITEM_GCC0 << GCQ_ITEM0_SHIFT);
+ break;
+ case 1:
+ reg = (GCQ_ITEM_GCC1 << GCQ_ITEM0_SHIFT);
+ break;
+ case 2:
+ reg = (GCQ_ITEM_GCC2 << GCQ_ITEM0_SHIFT);
+ break;
+ default:
+ break;
+ }
+ __raw_writel(reg, st->reg_base + GCQ_ITEM_7_0);
+
+}
+
+void imx_adc_read_general(unsigned short *result, struct imx_adc_state *st)
+{
+ unsigned long reg;
+
+ reg = __raw_readl(st->reg_base + GCQCR);
+ reg |= CQCR_FQS;
+ __raw_writel(reg, st->reg_base + GCQCR);
+
+ while (!(__raw_readl(st->reg_base + GCQSR) & CQSR_EOQ))
+ continue;
+ reg = __raw_readl(st->reg_base + GCQCR);
+ reg &= ~CQCR_FQS;
+ __raw_writel(reg, st->reg_base + GCQCR);
+ reg = __raw_readl(st->reg_base + GCQSR);
+ reg |= CQSR_EOQ;
+ __raw_writel(reg, st->reg_base + GCQSR);
+
+ while (!(__raw_readl(st->reg_base + GCQSR) & CQSR_EMPT)) {
+ *result = __raw_readl(st->reg_base + GCQFIFO) >>
+ GCQFIFO_ADCOUT_SHIFT;
+
+ }
+
+}
+
+#define IMX25_ADC_MAX_CH_NUM (3)
+static struct iio_chan_spec imx_adc_iio_channels[IMX25_ADC_MAX_CH_NUM];
+
+static int imx_adc_read_raw(struct iio_dev *idev,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask)
+{
+ struct imx_adc_state *st= iio_priv(idev);
+ unsigned short rawresult;
+
+
+ switch (mask) {
+ case IIO_CHAN_INFO_RAW:
+ mutex_lock(&st->lock);
+
+ imx_adc_set_chanel(st, chan->channel);
+ imx_adc_read_general (&rawresult, st);
+
+ st->value = rawresult;
+ *val = st->value;
+
+ mutex_unlock(&st->lock);
+ return IIO_VAL_INT;
+
+ case IIO_CHAN_INFO_SCALE:
+ *val = (st->vref_mv * 1000) >> IMX_ADC_DATA_BITS;
+ *val2 = 0;
+ return IIO_VAL_INT_PLUS_MICRO;
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static const struct iio_info imx_adc_info = {
+ .driver_module = THIS_MODULE,
+ .read_raw = &imx_adc_read_raw,
+};
+
+static int imx_adc_probe_dt(struct imx_adc_state *st,
+ struct platform_device *pdev)
+{
+ //ToDo implement adc_probe_dt function
+ return 1;
+}
+
+/* platform data file should contain next
+*
+* static struct resource adc_resources[] = {
+* [0] = {
+* .start = MX25_TSC_BASE_ADDR,
+* .end = MX25_TSC_BASE_ADDR + SZ_16K - 1,
+* .flags = IORESOURCE_MEM,
+* },
+* };
+*
+* static struct imx_adc_data mpu5_imx_adc_data = {
+* .channels_used = 0x01,
+* .num_channels = 3,
+* .vref = 2500,
+* };
+*
+*
+* static struct platform_device imx_adc = {
+* .name = "imx25-adc",
+* .id = -1,
+* .resource = adc_resources,
+* .num_resources = ARRAY_SIZE(adc_resources),
+* .dev = {
+* .platform_data = &mpu5_imx_adc_data,
+* }
+* };
+*/
+
+static int imx_adc_probe_pdata(struct imx_adc_state *st,
+ struct platform_device *pdev)
+{
+ struct imx_adc_data *pdata = pdev->dev.platform_data;
+
+ if (!pdata)
+ return -EINVAL;
+
+
+ st->vref_mv = pdata->vref;
+ st->channels_mask = pdata->channels_used;
+ st->num_channels = pdata->num_channels;
+ // st->trigger_number = pdata->trigger_number;
+ // st->trigger_list = pdata->trigger_list;
+ // st->registers = pdata->registers;
+
+ return 0;
+}
+
+static int imx_adc_probe(struct platform_device *pdev)
+{
+ struct imx_adc_state *st;
+ struct iio_dev *iodev = NULL;
+ int ret = -ENODEV;
+ struct resource *res;
+ int i;
+
+ dev_info(&pdev->dev, "version 0.0.5 \n");
+
+ iodev = iio_device_alloc(sizeof(struct imx_adc_state));
+ // iodev = iio_allocate_device(sizeof(struct imx_adc_state)); //legasy name
+ if (iodev == NULL) {
+ dev_err(&pdev->dev, "failed allocating iio device\n");
+ ret = -ENOMEM;
+ goto error_ret;
+ }
+
+ st = iio_priv(iodev);
+
+ if (pdev->dev.of_node)
+ ret = imx_adc_probe_dt(st, pdev);
+ else
+ ret = imx_adc_probe_pdata(st, pdev);
+
+ if (ret) {
+ dev_err(&pdev->dev, "No platform data available.\n");
+ ret = -EINVAL;
+ goto error_free_device;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "No resource defined\n");
+ ret = -ENXIO;
+ goto error_ret;
+ }
+
+ if (!request_mem_region(res->start, resource_size(res),
+ "IMX adc registers")) {
+ dev_err(&pdev->dev, "Resources are unavailable.\n");
+ ret = -EBUSY;
+ goto error_free_device;
+ }
+
+ dev_info(&pdev->dev, "res->start %p \n", res->start);
+
+ st->reg_base = ioremap(res->start, resource_size(res));
+ if (!st->reg_base) {
+ dev_err(&pdev->dev, "Failed to map registers.\n");
+ ret = -ENOMEM;
+ goto error_release_mem;
+ }
+
+ dev_info(&pdev->dev, "reg_base %p \n", st->reg_base);
+
+ st->adc_clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(st->adc_clk)) {
+ dev_err(&pdev->dev, "Failed to get the clock.\n");
+ ret = PTR_ERR(st->adc_clk);
+ goto error_free_clk;
+ }
+
+ dev_info(&pdev->dev, "st point b1 %p \n", st);
+
+ ret = adc_clk_enable(st);
+ if (ret) {
+ dev_err(&pdev->dev, "Could not enable the clock.\n");
+ goto error_unprepare_clk;
+ }
+
+ dev_info(&pdev->dev, "adc clk enabled\n");
+
+ /* Reset */
+ tsc_self_reset(st);
+ dev_info(&pdev->dev, "adc reseted\n");
+
+ // /* Internal reference */
+ tsc_intref_enable(st);
+ dev_info(&pdev->dev, "Internal reference enabled\n");
+
+ adc_set_clk(st);
+
+ /* Set power mode */
+ adc_set_power_mode(st);
+
+ /* Set queue*/
+ adc_set_queue(st);
+
+ platform_set_drvdata(pdev, iodev);
+
+ iodev->name = dev_name(&pdev->dev);
+ iodev->dev.parent = &pdev->dev;
+ iodev->info = &imx_adc_info;
+ iodev->modes = INDIO_DIRECT_MODE;
+
+ if (st->num_channels > IMX25_ADC_MAX_CH_NUM) {
+ dev_err(&pdev->dev, "Platform data error. To many adc chanels \n");
+ ret = -EINVAL;
+ goto error_dev_cfg;
+ }
+ iodev->num_channels = st->num_channels;
+
+ for (i = 0; i < st->num_channels; i++) {
+
+ imx_adc_iio_channels[i].type = IIO_VOLTAGE;
+ imx_adc_iio_channels[i].indexed = 1;
+ imx_adc_iio_channels[i].channel = i;
+ imx_adc_iio_channels[i].scan_index = 0;
+ imx_adc_iio_channels[i].scan_type.sign = 'u';
+ imx_adc_iio_channels[i].scan_type.realbits = 12;
+ imx_adc_iio_channels[i].scan_type.storagebits = 16;
+ // imx_adc_iio_channels[0].info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT |
+ // IIO_CHAN_INFO_RAW_SEPARATE_BIT;
+ imx_adc_iio_channels[i].info_mask = IIO_CHAN_INFO_SCALE_SHARED_BIT;
+ }
+
+ iodev->channels = imx_adc_iio_channels;
+
+ ret = iio_device_register(iodev);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Couldn't register the device.\n");
+ goto error_dev;
+ }
+
+ //ToDo Setup interrupt
+
+ mutex_init(&st->lock);
+
+ //ToDo Setup buffers
+ //ToDo Setup triggers
+ //ToDo Setup registers
+
+ return 0;
+
+error_dev:
+
+error_dev_cfg:
+
+error_unprepare_clk:
+ adc_clk_disable(st);
+error_free_clk:
+ clk_put(st->adc_clk);
+error_release_mem:
+ release_mem_region(res->start, resource_size(res));
+error_free_device:
+ iio_device_free(iodev);
+error_ret:
+ return ret;
+}
+
+static int imx_adc_remove(struct platform_device *pdev)
+{
+ struct iio_dev *iodev = platform_get_drvdata(pdev);
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct imx_adc_state *st = iio_priv(iodev);
+
+ iio_device_unregister(iodev);
+
+ adc_clk_disable(st);
+ clk_put(st->adc_clk);
+ release_mem_region(res->start, resource_size(res));
+
+ iio_device_free(iodev);
+
+ return 0;
+}
+
+
+static struct platform_driver imx_adc_driver = {
+ .probe = imx_adc_probe,
+ .remove = imx_adc_remove,
+ .driver = {
+ .name = "imx25-adc",
+// .of_match_table = of_match_ptr(imx25_adc_dt_ids),
+ },
+};
+
+module_platform_driver(imx_adc_driver);
+
+MODULE_AUTHOR("Denis Darwish <darwish.d.d@xxxxxxxxx>");
+MODULE_DESCRIPTION("Freescale i.MX25 ADC Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/iio/adc/imx_adc.h b/drivers/staging/iio/adc/imx_adc.h
new file mode 100644
index 0000000..9ce3370
--- /dev/null
+++ b/drivers/staging/iio/adc/imx_adc.h
@@ -0,0 +1,13 @@
+
+/**
+ * struct imx_adc_data - platform data for ADC driver
+ * @channels_used: channels in use on the board as a bitmask
+ * @num_channels: global number of channels available on the board
+ * @vref: Reference voltage for the ADC in millivolts
+ */
+
+struct imx_adc_data {
+ unsigned long channels_used;
+ u8 num_channels;
+ u16 vref;
+};
\ No newline at end of file
diff --git a/drivers/staging/iio/adc/imx_adc_reg.h b/drivers/staging/iio/adc/imx_adc_reg.h
new file mode 100644
index 0000000..9d9fc89
--- /dev/null
+++ b/drivers/staging/iio/adc/imx_adc_reg.h
@@ -0,0 +1,243 @@
+/*
+ * Copyright 2009-2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU Lesser General
+ * Public License. You may obtain a copy of the GNU Lesser General
+ * Public License Version 2.1 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/lgpl-license.html
+ * http://www.gnu.org/copyleft/lgpl.html
+ */
+
+#ifndef __IMX_ADC_H__
+#define __IMX_ADC_H__
+
+/* TSC General Config Register */
+#define TGCR 0x000
+#define TGCR_IPG_CLK_EN (1 << 0)
+#define TGCR_TSC_RST (1 << 1)
+#define TGCR_FUNC_RST (1 << 2)
+#define TGCR_SLPC (1 << 4)
+#define TGCR_STLC (1 << 5)
+#define TGCR_HSYNC_EN (1 << 6)
+#define TGCR_HSYNC_POL (1 << 7)
+#define TGCR_POWERMODE_SHIFT 8
+#define TGCR_POWER_OFF (0x0 << TGCR_POWERMODE_SHIFT)
+#define TGCR_POWER_SAVE (0x1 << TGCR_POWERMODE_SHIFT)
+#define TGCR_POWER_ON (0x3 << TGCR_POWERMODE_SHIFT)
+#define TGCR_POWER_MASK (0x3 << TGCR_POWERMODE_SHIFT)
+#define TGCR_INTREFEN (1 << 10)
+#define TGCR_ADCCLKCFG_SHIFT 16
+#define TGCR_ADCCLKCFG_MASK (0x1F << TGCR_ADCCLKCFG_SHIFT)
+#define TGCR_PD_EN (1 << 23)
+#define TGCR_PDB_EN (1 << 24)
+#define TGCR_PDBTIME_SHIFT 25
+#define TGCR_PDBTIME128 (0x3f << TGCR_PDBTIME_SHIFT)
+#define TGCR_PDBTIME_MASK (0x7f << TGCR_PDBTIME_SHIFT)
+
+/* TSC General Status Register */
+#define TGSR 0x004
+#define TCQ_INT (1 << 0)
+#define GCQ_INT (1 << 1)
+#define SLP_INT (1 << 2)
+#define TCQ_DMA (1 << 16)
+#define GCQ_DMA (1 << 17)
+
+/* TSC IDLE Config Register */
+#define TICR 0x008
+
+/* TouchScreen Convert Queue FIFO Register */
+#define TCQFIFO 0x400
+/* TouchScreen Convert Queue Control Register */
+#define TCQCR 0x404
+#define CQCR_QSM_SHIFT 0
+#define CQCR_QSM_STOP (0x0 << CQCR_QSM_SHIFT)
+#define CQCR_QSM_PEN (0x1 << CQCR_QSM_SHIFT)
+#define CQCR_QSM_FQS (0x2 << CQCR_QSM_SHIFT)
+#define CQCR_QSM_FQS_PEN (0x3 << CQCR_QSM_SHIFT)
+#define CQCR_QSM_MASK (0x3 << CQCR_QSM_SHIFT)
+#define CQCR_FQS (1 << 2)
+#define CQCR_RPT (1 << 3)
+#define CQCR_LAST_ITEM_ID_SHIFT 4
+#define CQCR_LAST_ITEM_ID_MASK (0xf << CQCR_LAST_ITEM_ID_SHIFT)
+#define CQCR_FIFOWATERMARK_SHIFT 8
+#define CQCR_FIFOWATERMARK_MASK (0xf << CQCR_FIFOWATERMARK_SHIFT)
+#define CQCR_REPEATWAIT_SHIFT 12
+#define CQCR_REPEATWAIT_MASK (0xf << CQCR_REPEATWAIT_SHIFT)
+#define CQCR_QRST (1 << 16)
+#define CQCR_FRST (1 << 17)
+#define CQCR_PD_MSK (1 << 18)
+#define CQCR_PD_CFG (1 << 19)
+
+/* TouchScreen Convert Queue Status Register */
+#define TCQSR 0x408
+#define CQSR_PD (1 << 0)
+#define CQSR_EOQ (1 << 1)
+#define CQSR_FOR (1 << 4)
+#define CQSR_FUR (1 << 5)
+#define CQSR_FER (1 << 6)
+#define CQSR_EMPT (1 << 13)
+#define CQSR_FULL (1 << 14)
+#define CQSR_FDRY (1 << 15)
+
+/* TouchScreen Convert Queue Mask Register */
+#define TCQMR 0x40c
+#define TCQMR_PD_IRQ_MSK (1 << 0)
+#define TCQMR_EOQ_IRQ_MSK (1 << 1)
+#define TCQMR_FOR_IRQ_MSK (1 << 4)
+#define TCQMR_FUR_IRQ_MSK (1 << 5)
+#define TCQMR_FER_IRQ_MSK (1 << 6)
+#define TCQMR_PD_DMA_MSK (1 << 16)
+#define TCQMR_EOQ_DMA_MSK (1 << 17)
+#define TCQMR_FOR_DMA_MSK (1 << 20)
+#define TCQMR_FUR_DMA_MSK (1 << 21)
+#define TCQMR_FER_DMA_MSK (1 << 22)
+#define TCQMR_FDRY_DMA_MSK (1 << 31)
+
+/* TouchScreen Convert Queue ITEM 7~0 */
+#define TCQ_ITEM_7_0 0x420
+
+/* TouchScreen Convert Queue ITEM 15~8 */
+#define TCQ_ITEM_15_8 0x424
+
+#define TCQ_ITEM7_SHIFT 28
+#define TCQ_ITEM6_SHIFT 24
+#define TCQ_ITEM5_SHIFT 20
+#define TCQ_ITEM4_SHIFT 16
+#define TCQ_ITEM3_SHIFT 12
+#define TCQ_ITEM2_SHIFT 8
+#define TCQ_ITEM1_SHIFT 4
+#define TCQ_ITEM0_SHIFT 0
+
+#define TCQ_ITEM_TCC0 0x0
+#define TCQ_ITEM_TCC1 0x1
+#define TCQ_ITEM_TCC2 0x2
+#define TCQ_ITEM_TCC3 0x3
+#define TCQ_ITEM_TCC4 0x4
+#define TCQ_ITEM_TCC5 0x5
+#define TCQ_ITEM_TCC6 0x6
+#define TCQ_ITEM_TCC7 0x7
+#define TCQ_ITEM_GCC7 0x8
+#define TCQ_ITEM_GCC6 0x9
+#define TCQ_ITEM_GCC5 0xa
+#define TCQ_ITEM_GCC4 0xb
+#define TCQ_ITEM_GCC3 0xc
+#define TCQ_ITEM_GCC2 0xd
+#define TCQ_ITEM_GCC1 0xe
+#define TCQ_ITEM_GCC0 0xf
+
+/* TouchScreen Convert Config 0-7 */
+#define TCC0 0x440
+#define TCC1 0x444
+#define TCC2 0x448
+#define TCC3 0x44c
+#define TCC4 0x450
+#define TCC5 0x454
+#define TCC6 0x458
+#define TCC7 0x45c
+#define CC_PEN_IACK (1 << 1)
+#define CC_SEL_REFN_SHIFT 2
+#define CC_SEL_REFN_YNLR (0x1 << CC_SEL_REFN_SHIFT)
+#define CC_SEL_REFN_AGND (0x2 << CC_SEL_REFN_SHIFT)
+#define CC_SEL_REFN_MASK (0x3 << CC_SEL_REFN_SHIFT)
+#define CC_SELIN_SHIFT 4
+#define CC_SELIN_XPUL (0x0 << CC_SELIN_SHIFT)
+#define CC_SELIN_YPLL (0x1 << CC_SELIN_SHIFT)
+#define CC_SELIN_XNUR (0x2 << CC_SELIN_SHIFT)
+#define CC_SELIN_YNLR (0x3 << CC_SELIN_SHIFT)
+#define CC_SELIN_WIPER (0x4 << CC_SELIN_SHIFT)
+#define CC_SELIN_INAUX0 (0x5 << CC_SELIN_SHIFT)
+#define CC_SELIN_INAUX1 (0x6 << CC_SELIN_SHIFT)
+#define CC_SELIN_INAUX2 (0x7 << CC_SELIN_SHIFT)
+#define CC_SELIN_MASK (0x7 << CC_SELIN_SHIFT)
+#define CC_SELREFP_SHIFT 7
+#define CC_SELREFP_YPLL (0x0 << CC_SELREFP_SHIFT)
+#define CC_SELREFP_XPUL (0x1 << CC_SELREFP_SHIFT)
+#define CC_SELREFP_EXT (0x2 << CC_SELREFP_SHIFT)
+#define CC_SELREFP_INT (0x3 << CC_SELREFP_SHIFT)
+#define CC_SELREFP_MASK (0x3 << CC_SELREFP_SHIFT)
+#define CC_XPULSW (1 << 9)
+#define CC_XNURSW_SHIFT 10
+#define CC_XNURSW_HIGH (0x0 << CC_XNURSW_SHIFT)
+#define CC_XNURSW_OFF (0x1 << CC_XNURSW_SHIFT)
+#define CC_XNURSW_LOW (0x3 << CC_XNURSW_SHIFT)
+#define CC_XNURSW_MASK (0x3 << CC_XNURSW_SHIFT)
+#define CC_YPLLSW_SHIFT 12
+#define CC_YPLLSW_MASK (0x3 << CC_YPLLSW_SHIFT)
+#define CC_YNLRSW (1 << 14)
+#define CC_WIPERSW (1 << 15)
+#define CC_NOS_SHIFT 16
+#define CC_YPLLSW_HIGH (0x0 << CC_NOS_SHIFT)
+#define CC_YPLLSW_OFF (0x1 << CC_NOS_SHIFT)
+#define CC_YPLLSW_LOW (0x3 << CC_NOS_SHIFT)
+#define CC_NOS_MASK (0xf << CC_NOS_SHIFT)
+#define CC_IGS (1 << 20)
+#define CC_SETTLING_TIME_SHIFT 24
+#define CC_SETTLING_TIME_MASK (0xff << CC_SETTLING_TIME_SHIFT)
+
+#define TSC_4WIRE_PRECHARGE 0x158c
+#define TSC_4WIRE_TOUCH_DETECT 0x578e
+
+#define TSC_4WIRE_X_MEASUMENT 0x1c90
+#define TSC_4WIRE_Y_MEASUMENT 0x4604
+
+#define TSC_GENERAL_ADC_GCC0 0x17dc
+#define TSC_GENERAL_ADC_GCC1 0x17ec
+#define TSC_GENERAL_ADC_GCC2 0x17fc
+
+/* GeneralADC Convert Queue FIFO Register */
+#define GCQFIFO 0x800
+#define GCQFIFO_ADCOUT_SHIFT 4
+#define GCQFIFO_ADCOUT_MASK (0xfff << GCQFIFO_ADCOUT_SHIFT)
+/* GeneralADC Convert Queue Control Register */
+#define GCQCR 0x804
+/* GeneralADC Convert Queue Status Register */
+#define GCQSR 0x808
+/* GeneralADC Convert Queue Mask Register */
+#define GCQMR 0x80c
+
+/* GeneralADC Convert Queue ITEM 7~0 */
+#define GCQ_ITEM_7_0 0x820
+/* GeneralADC Convert Queue ITEM 15~8 */
+#define GCQ_ITEM_15_8 0x824
+
+#define GCQ_ITEM7_SHIFT 28
+#define GCQ_ITEM6_SHIFT 24
+#define GCQ_ITEM5_SHIFT 20
+#define GCQ_ITEM4_SHIFT 16
+#define GCQ_ITEM3_SHIFT 12
+#define GCQ_ITEM2_SHIFT 8
+#define GCQ_ITEM1_SHIFT 4
+#define GCQ_ITEM0_SHIFT 0
+
+#define GCQ_ITEM_GCC0 0x0
+#define GCQ_ITEM_GCC1 0x1
+#define GCQ_ITEM_GCC2 0x2
+#define GCQ_ITEM_GCC3 0x3
+
+/* GeneralADC Convert Config 0-7 */
+#define GCC0 0x840
+#define GCC1 0x844
+#define GCC2 0x848
+#define GCC3 0x84c
+#define GCC4 0x850
+#define GCC5 0x854
+#define GCC6 0x858
+#define GCC7 0x85c
+
+/* TSC Test Register R/W */
+#define TTR 0xc00
+/* TSC Monitor Register 1, 2 */
+#define MNT1 0xc04
+#define MNT2 0xc04
+
+#define DETECT_ITEM_ID_1 1
+#define DETECT_ITEM_ID_2 5
+#define TS_X_ITEM_ID 2
+#define TS_Y_ITEM_ID 3
+#define TSI_DATA 1
+#define FQS_DATA 0
+
+#endif /* __IMX_ADC_H__ */
--
1.7.10.4
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