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-rw-r--r--drivers/input/touchscreen/Kconfig22
-rw-r--r--drivers/input/touchscreen/Makefile2
-rw-r--r--drivers/input/touchscreen/cy8ctmg110_ts.c4
-rw-r--r--drivers/input/touchscreen/intel-mid-touch.c687
-rw-r--r--drivers/input/touchscreen/lpc32xx_ts.c411
-rw-r--r--drivers/input/touchscreen/s3c2410_ts.c2
-rw-r--r--drivers/input/touchscreen/stmpe-ts.c11
-rw-r--r--drivers/input/touchscreen/tps6507x-ts.c3
-rw-r--r--drivers/input/touchscreen/tsc2007.c2
-rw-r--r--drivers/input/touchscreen/wacom_w8001.c185
-rw-r--r--drivers/input/touchscreen/wm97xx-core.c18
11 files changed, 1326 insertions, 21 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 0069d9703fda..d59feb7b90f6 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -214,6 +214,16 @@ config TOUCHSCREEN_WACOM_W8001
To compile this driver as a module, choose M here: the
module will be called wacom_w8001.
+config TOUCHSCREEN_LPC32XX
+ tristate "LPC32XX touchscreen controller"
+ depends on ARCH_LPC32XX
+ help
+ Say Y here if you have a LPC32XX device and want
+ to support the built-in touchscreen.
+
+ To compile this driver as a module, choose M here: the
+ module will be called lpc32xx_ts.
+
config TOUCHSCREEN_MCS5000
tristate "MELFAS MCS-5000 touchscreen"
depends on I2C
@@ -250,6 +260,18 @@ config TOUCHSCREEN_INEXIO
To compile this driver as a module, choose M here: the
module will be called inexio.
+config TOUCHSCREEN_INTEL_MID
+ tristate "Intel MID platform resistive touchscreen"
+ depends on INTEL_SCU_IPC
+ help
+ Say Y here if you have a Intel MID based touchscreen in
+ your system.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called intel_mid_touch.
+
config TOUCHSCREEN_MK712
tristate "ICS MicroClock MK712 touchscreen"
help
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 28217e1dcafd..f1bc8a416824 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -23,6 +23,8 @@ obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o
obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o
obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o
obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o
+obj-$(CONFIG_TOUCHSCREEN_INTEL_MID) += intel-mid-touch.o
+obj-$(CONFIG_TOUCHSCREEN_LPC32XX) += lpc32xx_ts.o
obj-$(CONFIG_TOUCHSCREEN_MC13783) += mc13783_ts.o
obj-$(CONFIG_TOUCHSCREEN_MCS5000) += mcs5000_ts.o
obj-$(CONFIG_TOUCHSCREEN_MIGOR) += migor_ts.o
diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c
index 5ec0946938fe..d0c3a7229adf 100644
--- a/drivers/input/touchscreen/cy8ctmg110_ts.c
+++ b/drivers/input/touchscreen/cy8ctmg110_ts.c
@@ -206,9 +206,9 @@ static int __devinit cy8ctmg110_probe(struct i2c_client *client,
input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
input_set_abs_params(input_dev, ABS_X,
- CY8CTMG110_X_MIN, CY8CTMG110_X_MAX, 0, 0);
+ CY8CTMG110_X_MIN, CY8CTMG110_X_MAX, 4, 0);
input_set_abs_params(input_dev, ABS_Y,
- CY8CTMG110_Y_MIN, CY8CTMG110_Y_MAX, 0, 0);
+ CY8CTMG110_Y_MIN, CY8CTMG110_Y_MAX, 4, 0);
if (ts->reset_pin) {
err = gpio_request(ts->reset_pin, NULL);
diff --git a/drivers/input/touchscreen/intel-mid-touch.c b/drivers/input/touchscreen/intel-mid-touch.c
new file mode 100644
index 000000000000..c0307b22d86f
--- /dev/null
+++ b/drivers/input/touchscreen/intel-mid-touch.c
@@ -0,0 +1,687 @@
+/*
+ * Intel MID Resistive Touch Screen Driver
+ *
+ * Copyright (C) 2008 Intel Corp
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Questions/Comments/Bug fixes to Sreedhara (sreedhara.ds@intel.com)
+ * Ramesh Agarwal (ramesh.agarwal@intel.com)
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * TODO:
+ * review conversion of r/m/w sequences
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/param.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <asm/intel_scu_ipc.h>
+
+/* PMIC Interrupt registers */
+#define PMIC_REG_ID1 0x00 /* PMIC ID1 register */
+
+/* PMIC Interrupt registers */
+#define PMIC_REG_INT 0x04 /* PMIC interrupt register */
+#define PMIC_REG_MINT 0x05 /* PMIC interrupt mask register */
+
+/* ADC Interrupt registers */
+#define PMIC_REG_ADCINT 0x5F /* ADC interrupt register */
+#define PMIC_REG_MADCINT 0x60 /* ADC interrupt mask register */
+
+/* ADC Control registers */
+#define PMIC_REG_ADCCNTL1 0x61 /* ADC control register */
+
+/* ADC Channel Selection registers */
+#define PMICADDR0 0xA4
+#define END_OF_CHANNEL 0x1F
+
+/* ADC Result register */
+#define PMIC_REG_ADCSNS0H 0x64
+
+/* ADC channels for touch screen */
+#define MRST_TS_CHAN10 0xA /* Touch screen X+ connection */
+#define MRST_TS_CHAN11 0xB /* Touch screen X- connection */
+#define MRST_TS_CHAN12 0xC /* Touch screen Y+ connection */
+#define MRST_TS_CHAN13 0xD /* Touch screen Y- connection */
+
+/* Touch screen channel BIAS constants */
+#define MRST_XBIAS 0x20
+#define MRST_YBIAS 0x40
+#define MRST_ZBIAS 0x80
+
+/* Touch screen coordinates */
+#define MRST_X_MIN 10
+#define MRST_X_MAX 1024
+#define MRST_X_FUZZ 5
+#define MRST_Y_MIN 10
+#define MRST_Y_MAX 1024
+#define MRST_Y_FUZZ 5
+#define MRST_PRESSURE_MIN 0
+#define MRST_PRESSURE_NOMINAL 50
+#define MRST_PRESSURE_MAX 100
+
+#define WAIT_ADC_COMPLETION 10 /* msec */
+
+/* PMIC ADC round robin delays */
+#define ADC_LOOP_DELAY0 0x0 /* Continuous loop */
+#define ADC_LOOP_DELAY1 0x1 /* 4.5 ms approximate */
+
+/* PMIC Vendor Identifiers */
+#define PMIC_VENDOR_FS 0 /* PMIC vendor FreeScale */
+#define PMIC_VENDOR_MAXIM 1 /* PMIC vendor MAXIM */
+#define PMIC_VENDOR_NEC 2 /* PMIC vendor NEC */
+#define MRSTOUCH_MAX_CHANNELS 32 /* Maximum ADC channels */
+
+/* Touch screen device structure */
+struct mrstouch_dev {
+ struct device *dev; /* device associated with touch screen */
+ struct input_dev *input;
+ char phys[32];
+ u16 asr; /* Address selection register */
+ int irq;
+ unsigned int vendor; /* PMIC vendor */
+ unsigned int rev; /* PMIC revision */
+
+ int (*read_prepare)(struct mrstouch_dev *tsdev);
+ int (*read)(struct mrstouch_dev *tsdev, u16 *x, u16 *y, u16 *z);
+ int (*read_finish)(struct mrstouch_dev *tsdev);
+};
+
+
+/*************************** NEC and Maxim Interface ************************/
+
+static int mrstouch_nec_adc_read_prepare(struct mrstouch_dev *tsdev)
+{
+ return intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0, 0x20);
+}
+
+/*
+ * Enables PENDET interrupt.
+ */
+static int mrstouch_nec_adc_read_finish(struct mrstouch_dev *tsdev)
+{
+ int err;
+
+ err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0x20, 0x20);
+ if (!err)
+ err = intel_scu_ipc_update_register(PMIC_REG_ADCCNTL1, 0, 0x05);
+
+ return err;
+}
+
+/*
+ * Reads PMIC ADC touch screen result
+ * Reads ADC storage registers for higher 7 and lower 3 bits and
+ * converts the two readings into a single value and turns off gain bit
+ */
+static int mrstouch_ts_chan_read(u16 offset, u16 chan, u16 *vp, u16 *vm)
+{
+ int err;
+ u16 result;
+ u32 res;
+
+ result = PMIC_REG_ADCSNS0H + offset;
+
+ if (chan == MRST_TS_CHAN12)
+ result += 4;
+
+ err = intel_scu_ipc_ioread32(result, &res);
+ if (err)
+ return err;
+
+ /* Mash the bits up */
+
+ *vp = (res & 0xFF) << 3; /* Highest 7 bits */
+ *vp |= (res >> 8) & 0x07; /* Lower 3 bits */
+ *vp &= 0x3FF;
+
+ res >>= 16;
+
+ *vm = (res & 0xFF) << 3; /* Highest 7 bits */
+ *vm |= (res >> 8) & 0x07; /* Lower 3 bits */
+ *vm &= 0x3FF;
+
+ return 0;
+}
+
+/*
+ * Enables X, Y and Z bias values
+ * Enables YPYM for X channels and XPXM for Y channels
+ */
+static int mrstouch_ts_bias_set(uint offset, uint bias)
+{
+ int count;
+ u16 chan, start;
+ u16 reg[4];
+ u8 data[4];
+
+ chan = PMICADDR0 + offset;
+ start = MRST_TS_CHAN10;
+
+ for (count = 0; count <= 3; count++) {
+ reg[count] = chan++;
+ data[count] = bias | (start + count);
+ }
+
+ return intel_scu_ipc_writev(reg, data, 4);
+}
+
+/* To read touch screen channel values */
+static int mrstouch_nec_adc_read(struct mrstouch_dev *tsdev,
+ u16 *x, u16 *y, u16 *z)
+{
+ int err;
+ u16 xm, ym, zm;
+
+ /* configure Y bias for X channels */
+ err = mrstouch_ts_bias_set(tsdev->asr, MRST_YBIAS);
+ if (err)
+ goto ipc_error;
+
+ msleep(WAIT_ADC_COMPLETION);
+
+ /* read x+ and x- channels */
+ err = mrstouch_ts_chan_read(tsdev->asr, MRST_TS_CHAN10, x, &xm);
+ if (err)
+ goto ipc_error;
+
+ /* configure x bias for y channels */
+ err = mrstouch_ts_bias_set(tsdev->asr, MRST_XBIAS);
+ if (err)
+ goto ipc_error;
+
+ msleep(WAIT_ADC_COMPLETION);
+
+ /* read y+ and y- channels */
+ err = mrstouch_ts_chan_read(tsdev->asr, MRST_TS_CHAN12, y, &ym);
+ if (err)
+ goto ipc_error;
+
+ /* configure z bias for x and y channels */
+ err = mrstouch_ts_bias_set(tsdev->asr, MRST_ZBIAS);
+ if (err)
+ goto ipc_error;
+
+ msleep(WAIT_ADC_COMPLETION);
+
+ /* read z+ and z- channels */
+ err = mrstouch_ts_chan_read(tsdev->asr, MRST_TS_CHAN10, z, &zm);
+ if (err)
+ goto ipc_error;
+
+ return 0;
+
+ipc_error:
+ dev_err(tsdev->dev, "ipc error during adc read\n");
+ return err;
+}
+
+
+/*************************** Freescale Interface ************************/
+
+static int mrstouch_fs_adc_read_prepare(struct mrstouch_dev *tsdev)
+{
+ int err, count;
+ u16 chan;
+ u16 reg[5];
+ u8 data[5];
+
+ /* Stop the ADC */
+ err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0x00, 0x02);
+ if (err)
+ goto ipc_error;
+
+ chan = PMICADDR0 + tsdev->asr;
+
+ /* Set X BIAS */
+ for (count = 0; count <= 3; count++) {
+ reg[count] = chan++;
+ data[count] = 0x2A;
+ }
+ reg[count] = chan++; /* Dummy */
+ data[count] = 0;
+
+ err = intel_scu_ipc_writev(reg, data, 5);
+ if (err)
+ goto ipc_error;
+
+ msleep(WAIT_ADC_COMPLETION);
+
+ /* Set Y BIAS */
+ for (count = 0; count <= 3; count++) {
+ reg[count] = chan++;
+ data[count] = 0x4A;
+ }
+ reg[count] = chan++; /* Dummy */
+ data[count] = 0;
+
+ err = intel_scu_ipc_writev(reg, data, 5);
+ if (err)
+ goto ipc_error;
+
+ msleep(WAIT_ADC_COMPLETION);
+
+ /* Set Z BIAS */
+ err = intel_scu_ipc_iowrite32(chan + 2, 0x8A8A8A8A);
+ if (err)
+ goto ipc_error;
+
+ msleep(WAIT_ADC_COMPLETION);
+
+ return 0;
+
+ipc_error:
+ dev_err(tsdev->dev, "ipc error during %s\n", __func__);
+ return err;
+}
+
+static int mrstouch_fs_adc_read(struct mrstouch_dev *tsdev,
+ u16 *x, u16 *y, u16 *z)
+{
+ int err;
+ u16 result;
+ u16 reg[4];
+ u8 data[4];
+
+ result = PMIC_REG_ADCSNS0H + tsdev->asr;
+
+ reg[0] = result + 4;
+ reg[1] = result + 5;
+ reg[2] = result + 16;
+ reg[3] = result + 17;
+
+ err = intel_scu_ipc_readv(reg, data, 4);
+ if (err)
+ goto ipc_error;
+
+ *x = data[0] << 3; /* Higher 7 bits */
+ *x |= data[1] & 0x7; /* Lower 3 bits */
+ *x &= 0x3FF;
+
+ *y = data[2] << 3; /* Higher 7 bits */
+ *y |= data[3] & 0x7; /* Lower 3 bits */
+ *y &= 0x3FF;
+
+ /* Read Z value */
+ reg[0] = result + 28;
+ reg[1] = result + 29;
+
+ err = intel_scu_ipc_readv(reg, data, 4);
+ if (err)
+ goto ipc_error;
+
+ *z = data[0] << 3; /* Higher 7 bits */
+ *z |= data[1] & 0x7; /* Lower 3 bits */
+ *z &= 0x3FF;
+
+ return 0;
+
+ipc_error:
+ dev_err(tsdev->dev, "ipc error during %s\n", __func__);
+ return err;
+}
+
+static int mrstouch_fs_adc_read_finish(struct mrstouch_dev *tsdev)
+{
+ int err, count;
+ u16 chan;
+ u16 reg[5];
+ u8 data[5];
+
+ /* Clear all TS channels */
+ chan = PMICADDR0 + tsdev->asr;
+ for (count = 0; count <= 4; count++) {
+ reg[count] = chan++;
+ data[count] = 0;
+ }
+ err = intel_scu_ipc_writev(reg, data, 5);
+ if (err)
+ goto ipc_error;
+
+ for (count = 0; count <= 4; count++) {
+ reg[count] = chan++;
+ data[count] = 0;
+ }
+ err = intel_scu_ipc_writev(reg, data, 5);
+ if (err)
+ goto ipc_error;
+
+ err = intel_scu_ipc_iowrite32(chan + 2, 0x00000000);
+ if (err)
+ goto ipc_error;
+
+ /* Start ADC */
+ err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0x02, 0x02);
+ if (err)
+ goto ipc_error;
+
+ return 0;
+
+ipc_error:
+ dev_err(tsdev->dev, "ipc error during %s\n", __func__);
+ return err;
+}
+
+static void mrstouch_report_event(struct input_dev *input,
+ unsigned int x, unsigned int y, unsigned int z)
+{
+ if (z > MRST_PRESSURE_NOMINAL) {
+ /* Pen touched, report button touch and coordinates */
+ input_report_key(input, BTN_TOUCH, 1);
+ input_report_abs(input, ABS_X, x);
+ input_report_abs(input, ABS_Y, y);
+ } else {
+ input_report_key(input, BTN_TOUCH, 0);
+ }
+
+ input_report_abs(input, ABS_PRESSURE, z);
+ input_sync(input);
+}
+
+/* PENDET interrupt handler */
+static irqreturn_t mrstouch_pendet_irq(int irq, void *dev_id)
+{
+ struct mrstouch_dev *tsdev = dev_id;
+ u16 x, y, z;
+
+ /*
+ * Should we lower thread priority? Probably not, since we are
+ * not spinning but sleeping...
+ */
+
+ if (tsdev->read_prepare(tsdev))
+ goto out;
+
+ do {
+ if (tsdev->read(tsdev, &x, &y, &z))
+ break;
+
+ mrstouch_report_event(tsdev->input, x, y, z);
+ } while (z > MRST_PRESSURE_NOMINAL);
+
+ tsdev->read_finish(tsdev);
+
+out:
+ return IRQ_HANDLED;
+}
+
+/* Utility to read PMIC ID */
+static int __devinit mrstouch_read_pmic_id(uint *vendor, uint *rev)
+{
+ int err;
+ u8 r;
+
+ err = intel_scu_ipc_ioread8(PMIC_REG_ID1, &r);
+ if (err)
+ return err;
+
+ *vendor = r & 0x7;
+ *rev = (r >> 3) & 0x7;
+
+ return 0;
+}
+
+/*
+ * Parse ADC channels to find end of the channel configured by other ADC user
+ * NEC and MAXIM requires 4 channels and FreeScale needs 18 channels
+ */
+static int __devinit mrstouch_chan_parse(struct mrstouch_dev *tsdev)
+{
+ int err, i, found;
+ u8 r8;
+
+ found = -1;
+
+ for (i = 0; i < MRSTOUCH_MAX_CHANNELS; i++) {
+ if (found >= 0)
+ break;
+
+ err = intel_scu_ipc_ioread8(PMICADDR0 + i, &r8);
+ if (err)
+ return err;
+
+ if (r8 == END_OF_CHANNEL) {
+ found = i;
+ break;
+ }
+ }
+ if (found < 0)
+ return 0;
+
+ if (tsdev->vendor == PMIC_VENDOR_FS) {
+ if (found && found > (MRSTOUCH_MAX_CHANNELS - 18))
+ return -ENOSPC;
+ } else {
+ if (found && found > (MRSTOUCH_MAX_CHANNELS - 4))
+ return -ENOSPC;
+ }
+ return found;
+}
+
+
+/*
+ * Writes touch screen channels to ADC address selection registers
+ */
+static int __devinit mrstouch_ts_chan_set(uint offset)
+{
+ u16 chan;
+
+ int ret, count;
+
+ chan = PMICADDR0 + offset;
+ for (count = 0; count <= 3; count++) {
+ ret = intel_scu_ipc_iowrite8(chan++, MRST_TS_CHAN10 + count);
+ if (ret)
+ return ret;
+ }
+ return intel_scu_ipc_iowrite8(chan++, END_OF_CHANNEL);
+}
+
+/* Initialize ADC */
+static int __devinit mrstouch_adc_init(struct mrstouch_dev *tsdev)
+{
+ int err, start;
+ u8 ra, rm;
+
+ err = mrstouch_read_pmic_id(&tsdev->vendor, &tsdev->rev);
+ if (err) {
+ dev_err(tsdev->dev, "Unable to read PMIC id\n");
+ return err;
+ }
+
+ switch (tsdev->vendor) {
+ case PMIC_VENDOR_NEC:
+ case PMIC_VENDOR_MAXIM:
+ tsdev->read_prepare = mrstouch_nec_adc_read_prepare;
+ tsdev->read = mrstouch_nec_adc_read;
+ tsdev->read_finish = mrstouch_nec_adc_read_finish;
+ break;
+
+ case PMIC_VENDOR_FS:
+ tsdev->read_prepare = mrstouch_fs_adc_read_prepare;
+ tsdev->read = mrstouch_fs_adc_read;
+ tsdev->read_finish = mrstouch_fs_adc_read_finish;
+ break;
+
+ default:
+ dev_err(tsdev->dev,
+ "Unsupported touchscreen: %d\n", tsdev->vendor);
+ return -ENXIO;
+ }
+
+ start = mrstouch_chan_parse(tsdev);
+ if (start < 0) {
+ dev_err(tsdev->dev, "Unable to parse channels\n");
+ return start;
+ }
+
+ tsdev->asr = start;
+
+ /*
+ * ADC power on, start, enable PENDET and set loop delay
+ * ADC loop delay is set to 4.5 ms approximately
+ * Loop delay more than this results in jitter in adc readings
+ * Setting loop delay to 0 (continous loop) in MAXIM stops PENDET
+ * interrupt generation sometimes.
+ */
+
+ if (tsdev->vendor == PMIC_VENDOR_FS) {
+ ra = 0xE0 | ADC_LOOP_DELAY0;
+ rm = 0x5;
+ } else {
+ /* NEC and MAXIm not consistent with loop delay 0 */
+ ra = 0xE0 | ADC_LOOP_DELAY1;
+ rm = 0x0;
+
+ /* configure touch screen channels */
+ err = mrstouch_ts_chan_set(tsdev->asr);
+ if (err)
+ return err;
+ }
+
+ err = intel_scu_ipc_update_register(PMIC_REG_ADCCNTL1, ra, 0xE7);
+ if (err)
+ return err;
+
+ err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, rm, 0x03);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+
+/* Probe function for touch screen driver */
+static int __devinit mrstouch_probe(struct platform_device *pdev)
+{
+ struct mrstouch_dev *tsdev;
+ struct input_dev *input;
+ int err;
+ int irq;
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "no interrupt assigned\n");
+ return -EINVAL;
+ }
+
+ tsdev = kzalloc(sizeof(struct mrstouch_dev), GFP_KERNEL);
+ input = input_allocate_device();
+ if (!tsdev || !input) {
+ dev_err(&pdev->dev, "unable to allocate memory\n");
+ err = -ENOMEM;
+ goto err_free_mem;
+ }
+
+ tsdev->dev = &pdev->dev;
+ tsdev->input = input;
+ tsdev->irq = irq;
+
+ snprintf(tsdev->phys, sizeof(tsdev->phys),
+ "%s/input0", dev_name(tsdev->dev));
+
+ err = mrstouch_adc_init(tsdev);
+ if (err) {
+ dev_err(&pdev->dev, "ADC initialization failed\n");
+ goto err_free_mem;
+ }
+
+ input->name = "mrst_touchscreen";
+ input->phys = tsdev->phys;
+ input->dev.parent = tsdev->dev;
+
+ input->id.vendor = tsdev->vendor;
+ input->id.version = tsdev->rev;
+
+ input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+ input_set_abs_params(tsdev->input, ABS_X,
+ MRST_X_MIN, MRST_X_MAX, MRST_X_FUZZ, 0);
+ input_set_abs_params(tsdev->input, ABS_Y,
+ MRST_Y_MIN, MRST_Y_MAX, MRST_Y_FUZZ, 0);
+ input_set_abs_params(tsdev->input, ABS_PRESSURE,
+ MRST_PRESSURE_MIN, MRST_PRESSURE_MAX, 0, 0);
+
+ err = request_threaded_irq(tsdev->irq, NULL, mrstouch_pendet_irq,
+ 0, "mrstouch", tsdev);
+ if (err) {
+ dev_err(tsdev->dev, "unable to allocate irq\n");
+ goto err_free_mem;
+ }
+
+ err = input_register_device(tsdev->input);
+ if (err) {
+ dev_err(tsdev->dev, "unable to register input device\n");
+ goto err_free_irq;
+ }
+
+ platform_set_drvdata(pdev, tsdev);
+ return 0;
+
+err_free_irq:
+ free_irq(tsdev->irq, tsdev);
+err_free_mem:
+ input_free_device(input);
+ kfree(tsdev);
+ return err;
+}
+
+static int __devexit mrstouch_remove(struct platform_device *pdev)
+{
+ struct mrstouch_dev *tsdev = platform_get_drvdata(pdev);
+
+ free_irq(tsdev->irq, tsdev);
+ input_unregister_device(tsdev->input);
+ kfree(tsdev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static struct platform_driver mrstouch_driver = {
+ .driver = {
+ .name = "pmic_touch",
+ .owner = THIS_MODULE,
+ },
+ .probe = mrstouch_probe,
+ .remove = __devexit_p(mrstouch_remove),
+};
+
+static int __init mrstouch_init(void)
+{
+ return platform_driver_register(&mrstouch_driver);
+}
+module_init(mrstouch_init);
+
+static void __exit mrstouch_exit(void)
+{
+ platform_driver_unregister(&mrstouch_driver);
+}
+module_exit(mrstouch_exit);
+
+MODULE_AUTHOR("Sreedhara Murthy. D.S, sreedhara.ds@intel.com");
+MODULE_DESCRIPTION("Intel Moorestown Resistive Touch Screen Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/lpc32xx_ts.c b/drivers/input/touchscreen/lpc32xx_ts.c
new file mode 100644
index 000000000000..dcf803f5a1f7
--- /dev/null
+++ b/drivers/input/touchscreen/lpc32xx_ts.c
@@ -0,0 +1,411 @@
+/*
+ * LPC32xx built-in touchscreen driver
+ *
+ * Copyright (C) 2010 NXP Semiconductors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+/*
+ * Touchscreen controller register offsets
+ */
+#define LPC32XX_TSC_STAT 0x00
+#define LPC32XX_TSC_SEL 0x04
+#define LPC32XX_TSC_CON 0x08
+#define LPC32XX_TSC_FIFO 0x0C
+#define LPC32XX_TSC_DTR 0x10
+#define LPC32XX_TSC_RTR 0x14
+#define LPC32XX_TSC_UTR 0x18
+#define LPC32XX_TSC_TTR 0x1C
+#define LPC32XX_TSC_DXP 0x20
+#define LPC32XX_TSC_MIN_X 0x24
+#define LPC32XX_TSC_MAX_X 0x28
+#define LPC32XX_TSC_MIN_Y 0x2C
+#define LPC32XX_TSC_MAX_Y 0x30
+#define LPC32XX_TSC_AUX_UTR 0x34
+#define LPC32XX_TSC_AUX_MIN 0x38
+#define LPC32XX_TSC_AUX_MAX 0x3C
+
+#define LPC32XX_TSC_STAT_FIFO_OVRRN (1 << 8)
+#define LPC32XX_TSC_STAT_FIFO_EMPTY (1 << 7)
+
+#define LPC32XX_TSC_SEL_DEFVAL 0x0284
+
+#define LPC32XX_TSC_ADCCON_IRQ_TO_FIFO_4 (0x1 << 11)
+#define LPC32XX_TSC_ADCCON_X_SAMPLE_SIZE(s) ((10 - (s)) << 7)
+#define LPC32XX_TSC_ADCCON_Y_SAMPLE_SIZE(s) ((10 - (s)) << 4)
+#define LPC32XX_TSC_ADCCON_POWER_UP (1 << 2)
+#define LPC32XX_TSC_ADCCON_AUTO_EN (1 << 0)
+
+#define LPC32XX_TSC_FIFO_TS_P_LEVEL (1 << 31)
+#define LPC32XX_TSC_FIFO_NORMALIZE_X_VAL(x) (((x) & 0x03FF0000) >> 16)
+#define LPC32XX_TSC_FIFO_NORMALIZE_Y_VAL(y) ((y) & 0x000003FF)
+
+#define LPC32XX_TSC_ADCDAT_VALUE_MASK 0x000003FF
+
+#define LPC32XX_TSC_MIN_XY_VAL 0x0
+#define LPC32XX_TSC_MAX_XY_VAL 0x3FF
+
+#define MOD_NAME "ts-lpc32xx"
+
+#define tsc_readl(dev, reg) \
+ __raw_readl((dev)->tsc_base + (reg))
+#define tsc_writel(dev, reg, val) \
+ __raw_writel((val), (dev)->tsc_base + (reg))
+
+struct lpc32xx_tsc {
+ struct input_dev *dev;
+ void __iomem *tsc_base;
+ int irq;
+ struct clk *clk;
+};
+
+static void lpc32xx_fifo_clear(struct lpc32xx_tsc *tsc)
+{
+ while (!(tsc_readl(tsc, LPC32XX_TSC_STAT) &
+ LPC32XX_TSC_STAT_FIFO_EMPTY))
+ tsc_readl(tsc, LPC32XX_TSC_FIFO);
+}
+
+static irqreturn_t lpc32xx_ts_interrupt(int irq, void *dev_id)
+{
+ u32 tmp, rv[4], xs[4], ys[4];
+ int idx;
+ struct lpc32xx_tsc *tsc = dev_id;
+ struct input_dev *input = tsc->dev;
+
+ tmp = tsc_readl(tsc, LPC32XX_TSC_STAT);
+
+ if (tmp & LPC32XX_TSC_STAT_FIFO_OVRRN) {
+ /* FIFO overflow - throw away samples */
+ lpc32xx_fifo_clear(tsc);
+ return IRQ_HANDLED;
+ }
+
+ /*
+ * Gather and normalize 4 samples. Pen-up events may have less
+ * than 4 samples, but its ok to pop 4 and let the last sample
+ * pen status check drop the samples.
+ */
+ idx = 0;
+ while (idx < 4 &&
+ !(tsc_readl(tsc, LPC32XX_TSC_STAT) &
+ LPC32XX_TSC_STAT_FIFO_EMPTY)) {
+ tmp = tsc_readl(tsc, LPC32XX_TSC_FIFO);
+ xs[idx] = LPC32XX_TSC_ADCDAT_VALUE_MASK -
+ LPC32XX_TSC_FIFO_NORMALIZE_X_VAL(tmp);
+ ys[idx] = LPC32XX_TSC_ADCDAT_VALUE_MASK -
+ LPC32XX_TSC_FIFO_NORMALIZE_Y_VAL(tmp);
+ rv[idx] = tmp;
+ idx++;
+ }
+
+ /* Data is only valid if pen is still down in last sample */
+ if (!(rv[3] & LPC32XX_TSC_FIFO_TS_P_LEVEL) && idx == 4) {
+ /* Use average of 2nd and 3rd sample for position */
+ input_report_abs(input, ABS_X, (xs[1] + xs[2]) / 2);
+ input_report_abs(input, ABS_Y, (ys[1] + ys[2]) / 2);
+ input_report_key(input, BTN_TOUCH, 1);
+ } else {
+ input_report_key(input, BTN_TOUCH, 0);
+ }
+
+ input_sync(input);
+
+ return IRQ_HANDLED;
+}
+
+static void lpc32xx_stop_tsc(struct lpc32xx_tsc *tsc)
+{
+ /* Disable auto mode */
+ tsc_writel(tsc, LPC32XX_TSC_CON,
+ tsc_readl(tsc, LPC32XX_TSC_CON) &
+ ~LPC32XX_TSC_ADCCON_AUTO_EN);
+
+ clk_disable(tsc->clk);
+}
+
+static void lpc32xx_setup_tsc(struct lpc32xx_tsc *tsc)
+{
+ u32 tmp;
+
+ clk_enable(tsc->clk);
+
+ tmp = tsc_readl(tsc, LPC32XX_TSC_CON) & ~LPC32XX_TSC_ADCCON_POWER_UP;
+
+ /* Set the TSC FIFO depth to 4 samples @ 10-bits per sample (max) */
+ tmp = LPC32XX_TSC_ADCCON_IRQ_TO_FIFO_4 |
+ LPC32XX_TSC_ADCCON_X_SAMPLE_SIZE(10) |
+ LPC32XX_TSC_ADCCON_Y_SAMPLE_SIZE(10);
+ tsc_writel(tsc, LPC32XX_TSC_CON, tmp);
+
+ /* These values are all preset */
+ tsc_writel(tsc, LPC32XX_TSC_SEL, LPC32XX_TSC_SEL_DEFVAL);
+ tsc_writel(tsc, LPC32XX_TSC_MIN_X, LPC32XX_TSC_MIN_XY_VAL);
+ tsc_writel(tsc, LPC32XX_TSC_MAX_X, LPC32XX_TSC_MAX_XY_VAL);
+ tsc_writel(tsc, LPC32XX_TSC_MIN_Y, LPC32XX_TSC_MIN_XY_VAL);
+ tsc_writel(tsc, LPC32XX_TSC_MAX_Y, LPC32XX_TSC_MAX_XY_VAL);
+
+ /* Aux support is not used */
+ tsc_writel(tsc, LPC32XX_TSC_AUX_UTR, 0);
+ tsc_writel(tsc, LPC32XX_TSC_AUX_MIN, 0);
+ tsc_writel(tsc, LPC32XX_TSC_AUX_MAX, 0);
+
+ /*
+ * Set sample rate to about 240Hz per X/Y pair. A single measurement
+ * consists of 4 pairs which gives about a 60Hz sample rate based on
+ * a stable 32768Hz clock source. Values are in clocks.
+ * Rate is (32768 / (RTR + XCONV + RTR + YCONV + DXP + TTR + UTR) / 4
+ */
+ tsc_writel(tsc, LPC32XX_TSC_RTR, 0x2);
+ tsc_writel(tsc, LPC32XX_TSC_DTR, 0x2);
+ tsc_writel(tsc, LPC32XX_TSC_TTR, 0x10);
+ tsc_writel(tsc, LPC32XX_TSC_DXP, 0x4);
+ tsc_writel(tsc, LPC32XX_TSC_UTR, 88);
+
+ lpc32xx_fifo_clear(tsc);
+
+ /* Enable automatic ts event capture */
+ tsc_writel(tsc, LPC32XX_TSC_CON, tmp | LPC32XX_TSC_ADCCON_AUTO_EN);
+}
+
+static int lpc32xx_ts_open(struct input_dev *dev)
+{
+ struct lpc32xx_tsc *tsc = input_get_drvdata(dev);
+
+ lpc32xx_setup_tsc(tsc);
+
+ return 0;
+}
+
+static void lpc32xx_ts_close(struct input_dev *dev)
+{
+ struct lpc32xx_tsc *tsc = input_get_drvdata(dev);
+
+ lpc32xx_stop_tsc(tsc);
+}
+
+static int __devinit lpc32xx_ts_probe(struct platform_device *pdev)
+{
+ struct lpc32xx_tsc *tsc;
+ struct input_dev *input;
+ struct resource *res;
+ resource_size_t size;
+ int irq;
+ int error;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Can't get memory resource\n");
+ return -ENOENT;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Can't get interrupt resource\n");
+ return irq;
+ }
+
+ tsc = kzalloc(sizeof(*tsc), GFP_KERNEL);
+ input = input_allocate_device();
+ if (!tsc || !input) {
+ dev_err(&pdev->dev, "failed allocating memory\n");
+ error = -ENOMEM;
+ goto err_free_mem;
+ }
+
+ tsc->dev = input;
+ tsc->irq = irq;
+
+ size = resource_size(res);
+
+ if (!request_mem_region(res->start, size, pdev->name)) {
+ dev_err(&pdev->dev, "TSC registers are not free\n");
+ error = -EBUSY;
+ goto err_free_mem;
+ }
+
+ tsc->tsc_base = ioremap(res->start, size);
+ if (!tsc->tsc_base) {
+ dev_err(&pdev->dev, "Can't map memory\n");
+ error = -ENOMEM;
+ goto err_release_mem;
+ }
+
+ tsc->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(tsc->clk)) {
+ dev_err(&pdev->dev, "failed getting clock\n");
+ error = PTR_ERR(tsc->clk);
+ goto err_unmap;
+ }
+
+ input->name = MOD_NAME;
+ input->phys = "lpc32xx/input0";
+ input->id.bustype = BUS_HOST;
+ input->id.vendor = 0x0001;
+ input->id.product = 0x0002;
+ input->id.version = 0x0100;
+ input->dev.parent = &pdev->dev;
+ input->open = lpc32xx_ts_open;
+ input->close = lpc32xx_ts_close;
+
+ input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+ input_set_abs_params(input, ABS_X, LPC32XX_TSC_MIN_XY_VAL,
+ LPC32XX_TSC_MAX_XY_VAL, 0, 0);
+ input_set_abs_params(input, ABS_Y, LPC32XX_TSC_MIN_XY_VAL,
+ LPC32XX_TSC_MAX_XY_VAL, 0, 0);
+
+ input_set_drvdata(input, tsc);
+
+ error = request_irq(tsc->irq, lpc32xx_ts_interrupt,
+ IRQF_DISABLED, pdev->name, tsc);
+ if (error) {
+ dev_err(&pdev->dev, "failed requesting interrupt\n");
+ goto err_put_clock;
+ }
+
+ error = input_register_device(input);
+ if (error) {
+ dev_err(&pdev->dev, "failed registering input device\n");
+ goto err_free_irq;
+ }
+
+ platform_set_drvdata(pdev, tsc);
+ device_init_wakeup(&pdev->dev, 1);
+
+ return 0;
+
+err_free_irq:
+ free_irq(tsc->irq, tsc);
+err_put_clock:
+ clk_put(tsc->clk);
+err_unmap:
+ iounmap(tsc->tsc_base);
+err_release_mem:
+ release_mem_region(res->start, size);
+err_free_mem:
+ input_free_device(input);
+ kfree(tsc);
+
+ return error;
+}
+
+static int __devexit lpc32xx_ts_remove(struct platform_device *pdev)
+{
+ struct lpc32xx_tsc *tsc = platform_get_drvdata(pdev);
+ struct resource *res;
+
+ device_init_wakeup(&pdev->dev, 0);
+ free_irq(tsc->irq, tsc);
+
+ input_unregister_device(tsc->dev);
+
+ clk_put(tsc->clk);
+
+ iounmap(tsc->tsc_base);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, resource_size(res));
+
+ kfree(tsc);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int lpc32xx_ts_suspend(struct device *dev)
+{
+ struct lpc32xx_tsc *tsc = dev_get_drvdata(dev);
+ struct input_dev *input = tsc->dev;
+
+ /*
+ * Suspend and resume can be called when the device hasn't been
+ * enabled. If there are no users that have the device open, then
+ * avoid calling the TSC stop and start functions as the TSC
+ * isn't yet clocked.
+ */
+ mutex_lock(&input->mutex);
+
+ if (input->users) {
+ if (device_may_wakeup(dev))
+ enable_irq_wake(tsc->irq);
+ else
+ lpc32xx_stop_tsc(tsc);
+ }
+
+ mutex_unlock(&input->mutex);
+
+ return 0;
+}
+
+static int lpc32xx_ts_resume(struct device *dev)
+{
+ struct lpc32xx_tsc *tsc = dev_get_drvdata(dev);
+ struct input_dev *input = tsc->dev;
+
+ mutex_lock(&input->mutex);
+
+ if (input->users) {
+ if (device_may_wakeup(dev))
+ disable_irq_wake(tsc->irq);
+ else
+ lpc32xx_setup_tsc(tsc);
+ }
+
+ mutex_unlock(&input->mutex);
+
+ return 0;
+}
+
+static const struct dev_pm_ops lpc32xx_ts_pm_ops = {
+ .suspend = lpc32xx_ts_suspend,
+ .resume = lpc32xx_ts_resume,
+};
+#define LPC32XX_TS_PM_OPS (&lpc32xx_ts_pm_ops)
+#else
+#define LPC32XX_TS_PM_OPS NULL
+#endif
+
+static struct platform_driver lpc32xx_ts_driver = {
+ .probe = lpc32xx_ts_probe,
+ .remove = __devexit_p(lpc32xx_ts_remove),
+ .driver = {
+ .name = MOD_NAME,
+ .owner = THIS_MODULE,
+ .pm = LPC32XX_TS_PM_OPS,
+ },
+};
+
+static int __init lpc32xx_ts_init(void)
+{
+ return platform_driver_register(&lpc32xx_ts_driver);
+}
+module_init(lpc32xx_ts_init);
+
+static void __exit lpc32xx_ts_exit(void)
+{
+ platform_driver_unregister(&lpc32xx_ts_driver);
+}
+module_exit(lpc32xx_ts_exit);
+
+MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com");
+MODULE_DESCRIPTION("LPC32XX TSC Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:lpc32xx_ts");
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index 6085d12fd561..8feb7f3c8be1 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -350,7 +350,7 @@ static int __devinit s3c2410ts_probe(struct platform_device *pdev)
err_tcirq:
free_irq(ts.irq_tc, ts.input);
err_inputdev:
- input_unregister_device(ts.input);
+ input_free_device(ts.input);
err_iomap:
iounmap(ts.io);
err_clk:
diff --git a/drivers/input/touchscreen/stmpe-ts.c b/drivers/input/touchscreen/stmpe-ts.c
index 656148ec0027..ae88e13c99ff 100644
--- a/drivers/input/touchscreen/stmpe-ts.c
+++ b/drivers/input/touchscreen/stmpe-ts.c
@@ -268,7 +268,7 @@ static int __devinit stmpe_input_probe(struct platform_device *pdev)
struct stmpe_touch *ts;
struct input_dev *idev;
struct stmpe_ts_platform_data *ts_pdata = NULL;
- int ret = 0;
+ int ret;
int ts_irq;
ts_irq = platform_get_irq_byname(pdev, "FIFO_TH");
@@ -276,12 +276,16 @@ static int __devinit stmpe_input_probe(struct platform_device *pdev)
return ts_irq;
ts = kzalloc(sizeof(*ts), GFP_KERNEL);
- if (!ts)
+ if (!ts) {
+ ret = -ENOMEM;
goto err_out;
+ }
idev = input_allocate_device();
- if (!idev)
+ if (!idev) {
+ ret = -ENOMEM;
goto err_free_ts;
+ }
platform_set_drvdata(pdev, ts);
ts->stmpe = stmpe;
@@ -361,7 +365,6 @@ static int __devexit stmpe_ts_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
input_unregister_device(ts->idev);
- input_free_device(ts->idev);
kfree(ts);
diff --git a/drivers/input/touchscreen/tps6507x-ts.c b/drivers/input/touchscreen/tps6507x-ts.c
index a644d18c04dc..c8c136cf7bbc 100644
--- a/drivers/input/touchscreen/tps6507x-ts.c
+++ b/drivers/input/touchscreen/tps6507x-ts.c
@@ -335,6 +335,7 @@ static int tps6507x_ts_probe(struct platform_device *pdev)
dev_err(tsc->dev, "schedule failed");
goto err2;
}
+ platform_set_drvdata(pdev, tps6507x_dev);
return 0;
@@ -358,7 +359,7 @@ static int __devexit tps6507x_ts_remove(struct platform_device *pdev)
cancel_delayed_work_sync(&tsc->work);
destroy_workqueue(tsc->wq);
- input_free_device(input_dev);
+ input_unregister_device(input_dev);
tps6507x_dev->ts = NULL;
kfree(tsc);
diff --git a/drivers/input/touchscreen/tsc2007.c b/drivers/input/touchscreen/tsc2007.c
index be23780e8a3e..80467f262331 100644
--- a/drivers/input/touchscreen/tsc2007.c
+++ b/drivers/input/touchscreen/tsc2007.c
@@ -265,7 +265,7 @@ static int __devinit tsc2007_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct tsc2007 *ts;
- struct tsc2007_platform_data *pdata = pdata = client->dev.platform_data;
+ struct tsc2007_platform_data *pdata = client->dev.platform_data;
struct input_dev *input_dev;
int err;
diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
index 56dc35c94bb1..9ae4c7b16ba7 100644
--- a/drivers/input/touchscreen/wacom_w8001.c
+++ b/drivers/input/touchscreen/wacom_w8001.c
@@ -2,6 +2,7 @@
* Wacom W8001 penabled serial touchscreen driver
*
* Copyright (c) 2008 Jaya Kumar
+ * Copyright (c) 2010 Red Hat, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
@@ -30,11 +31,24 @@ MODULE_LICENSE("GPL");
#define W8001_LEAD_BYTE 0x80
#define W8001_TAB_MASK 0x40
#define W8001_TAB_BYTE 0x40
+/* set in first byte of touch data packets */
+#define W8001_TOUCH_MASK (0x10 | W8001_LEAD_MASK)
+#define W8001_TOUCH_BYTE (0x10 | W8001_LEAD_BYTE)
#define W8001_QUERY_PACKET 0x20
#define W8001_CMD_START '1'
#define W8001_CMD_QUERY '*'
+#define W8001_CMD_TOUCHQUERY '%'
+
+/* length of data packets in bytes, depends on device. */
+#define W8001_PKTLEN_TOUCH93 5
+#define W8001_PKTLEN_TOUCH9A 7
+#define W8001_PKTLEN_TPCPEN 9
+#define W8001_PKTLEN_TPCCTL 11 /* control packet */
+#define W8001_PKTLEN_TOUCH2FG 13
+
+#define MAX_TRACKING_ID 0xFF /* arbitrarily chosen */
struct w8001_coord {
u8 rdy;
@@ -48,6 +62,15 @@ struct w8001_coord {
u8 tilt_y;
};
+/* touch query reply packet */
+struct w8001_touch_query {
+ u8 panel_res;
+ u8 capacity_res;
+ u8 sensor_id;
+ u16 x;
+ u16 y;
+};
+
/*
* Per-touchscreen data.
*/
@@ -62,6 +85,9 @@ struct w8001 {
unsigned char response[W8001_MAX_LENGTH];
unsigned char data[W8001_MAX_LENGTH];
char phys[32];
+ int type;
+ unsigned int pktlen;
+ int trkid[2];
};
static void parse_data(u8 *data, struct w8001_coord *coord)
@@ -88,11 +114,98 @@ static void parse_data(u8 *data, struct w8001_coord *coord)
coord->tilt_y = data[8] & 0x7F;
}
+static void parse_touch(struct w8001 *w8001)
+{
+ static int trkid;
+ struct input_dev *dev = w8001->dev;
+ unsigned char *data = w8001->data;
+ int i;
+
+ for (i = 0; i < 2; i++) {
+ input_mt_slot(dev, i);
+
+ if (data[0] & (1 << i)) {
+ int x = (data[6 * i + 1] << 7) | (data[6 * i + 2]);
+ int y = (data[6 * i + 3] << 7) | (data[6 * i + 4]);
+ /* data[5,6] and [11,12] is finger capacity */
+
+ input_report_abs(dev, ABS_MT_POSITION_X, x);
+ input_report_abs(dev, ABS_MT_POSITION_Y, y);
+ input_report_abs(dev, ABS_MT_TOOL_TYPE, MT_TOOL_FINGER);
+ if (w8001->trkid[i] < 0)
+ w8001->trkid[i] = trkid++ & MAX_TRACKING_ID;
+ } else {
+ w8001->trkid[i] = -1;
+ }
+ input_report_abs(dev, ABS_MT_TRACKING_ID, w8001->trkid[i]);
+ }
+
+ input_sync(dev);
+}
+
+static void parse_touchquery(u8 *data, struct w8001_touch_query *query)
+{
+ memset(query, 0, sizeof(*query));
+
+ query->panel_res = data[1];
+ query->sensor_id = data[2] & 0x7;
+ query->capacity_res = data[7];
+
+ query->x = data[3] << 9;
+ query->x |= data[4] << 2;
+ query->x |= (data[2] >> 5) & 0x3;
+
+ query->y = data[5] << 9;
+ query->y |= data[6] << 2;
+ query->y |= (data[2] >> 3) & 0x3;
+}
+
+static void report_pen_events(struct w8001 *w8001, struct w8001_coord *coord)
+{
+ struct input_dev *dev = w8001->dev;
+
+ /*
+ * We have 1 bit for proximity (rdy) and 3 bits for tip, side,
+ * side2/eraser. If rdy && f2 are set, this can be either pen + side2,
+ * or eraser. assume
+ * - if dev is already in proximity and f2 is toggled → pen + side2
+ * - if dev comes into proximity with f2 set → eraser
+ * If f2 disappears after assuming eraser, fake proximity out for
+ * eraser and in for pen.
+ */
+
+ if (!w8001->type) {
+ w8001->type = coord->f2 ? BTN_TOOL_RUBBER : BTN_TOOL_PEN;
+ } else if (w8001->type == BTN_TOOL_RUBBER) {
+ if (!coord->f2) {
+ input_report_abs(dev, ABS_PRESSURE, 0);
+ input_report_key(dev, BTN_TOUCH, 0);
+ input_report_key(dev, BTN_STYLUS, 0);
+ input_report_key(dev, BTN_STYLUS2, 0);
+ input_report_key(dev, BTN_TOOL_RUBBER, 0);
+ input_sync(dev);
+ w8001->type = BTN_TOOL_PEN;
+ }
+ } else {
+ input_report_key(dev, BTN_STYLUS2, coord->f2);
+ }
+
+ input_report_abs(dev, ABS_X, coord->x);
+ input_report_abs(dev, ABS_Y, coord->y);
+ input_report_abs(dev, ABS_PRESSURE, coord->pen_pressure);
+ input_report_key(dev, BTN_TOUCH, coord->tsw);
+ input_report_key(dev, BTN_STYLUS, coord->f1);
+ input_report_key(dev, w8001->type, coord->rdy);
+ input_sync(dev);
+
+ if (!coord->rdy)
+ w8001->type = 0;
+}
+
static irqreturn_t w8001_interrupt(struct serio *serio,
unsigned char data, unsigned int flags)
{
struct w8001 *w8001 = serio_get_drvdata(serio);
- struct input_dev *dev = w8001->dev;
struct w8001_coord coord;
unsigned char tmp;
@@ -105,26 +218,45 @@ static irqreturn_t w8001_interrupt(struct serio *serio,
}
break;
- case 8:
+ case W8001_PKTLEN_TOUCH93 - 1:
+ case W8001_PKTLEN_TOUCH9A - 1:
+ /* ignore one-finger touch packet. */
+ if (w8001->pktlen == w8001->idx)
+ w8001->idx = 0;
+ break;
+
+ /* Pen coordinates packet */
+ case W8001_PKTLEN_TPCPEN - 1:
tmp = w8001->data[0] & W8001_TAB_MASK;
if (unlikely(tmp == W8001_TAB_BYTE))
break;
+ tmp = (w8001->data[0] & W8001_TOUCH_BYTE);
+ if (tmp == W8001_TOUCH_BYTE)
+ break;
+
w8001->idx = 0;
parse_data(w8001->data, &coord);
- input_report_abs(dev, ABS_X, coord.x);
- input_report_abs(dev, ABS_Y, coord.y);
- input_report_abs(dev, ABS_PRESSURE, coord.pen_pressure);
- input_report_key(dev, BTN_TOUCH, coord.tsw);
- input_sync(dev);
+ report_pen_events(w8001, &coord);
break;
- case 10:
+ /* control packet */
+ case W8001_PKTLEN_TPCCTL - 1:
+ tmp = (w8001->data[0] & W8001_TOUCH_MASK);
+ if (tmp == W8001_TOUCH_BYTE)
+ break;
+
w8001->idx = 0;
memcpy(w8001->response, w8001->data, W8001_MAX_LENGTH);
w8001->response_type = W8001_QUERY_PACKET;
complete(&w8001->cmd_done);
break;
+
+ /* 2 finger touch packet */
+ case W8001_PKTLEN_TOUCH2FG - 1:
+ w8001->idx = 0;
+ parse_touch(w8001);
+ break;
}
return IRQ_HANDLED;
@@ -167,6 +299,38 @@ static int w8001_setup(struct w8001 *w8001)
input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
+ error = w8001_command(w8001, W8001_CMD_TOUCHQUERY, true);
+ if (!error) {
+ struct w8001_touch_query touch;
+
+ parse_touchquery(w8001->response, &touch);
+
+ switch (touch.sensor_id) {
+ case 0:
+ case 2:
+ w8001->pktlen = W8001_PKTLEN_TOUCH93;
+ break;
+ case 1:
+ case 3:
+ case 4:
+ w8001->pktlen = W8001_PKTLEN_TOUCH9A;
+ break;
+ case 5:
+ w8001->pktlen = W8001_PKTLEN_TOUCH2FG;
+
+ input_mt_create_slots(dev, 2);
+ input_set_abs_params(dev, ABS_MT_TRACKING_ID,
+ 0, MAX_TRACKING_ID, 0, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_X,
+ 0, touch.x, 0, 0);
+ input_set_abs_params(dev, ABS_MT_POSITION_Y,
+ 0, touch.y, 0, 0);
+ input_set_abs_params(dev, ABS_MT_TOOL_TYPE,
+ 0, 0, 0, 0);
+ break;
+ }
+ }
+
return w8001_command(w8001, W8001_CMD_START, false);
}
@@ -208,6 +372,7 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
w8001->serio = serio;
w8001->id = serio->id.id;
w8001->dev = input_dev;
+ w8001->trkid[0] = w8001->trkid[1] = -1;
init_completion(&w8001->cmd_done);
snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys);
@@ -221,6 +386,10 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv)
input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+ input_dev->keybit[BIT_WORD(BTN_TOOL_PEN)] |= BIT_MASK(BTN_TOOL_PEN);
+ input_dev->keybit[BIT_WORD(BTN_TOOL_RUBBER)] |= BIT_MASK(BTN_TOOL_RUBBER);
+ input_dev->keybit[BIT_WORD(BTN_STYLUS)] |= BIT_MASK(BTN_STYLUS);
+ input_dev->keybit[BIT_WORD(BTN_STYLUS2)] |= BIT_MASK(BTN_STYLUS2);
serio_set_drvdata(serio, w8001);
err = serio_open(serio, drv);
diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c
index cbfef1ea7e30..6b75c9f660ae 100644
--- a/drivers/input/touchscreen/wm97xx-core.c
+++ b/drivers/input/touchscreen/wm97xx-core.c
@@ -125,6 +125,8 @@ int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel)
{
int power_adc = 0, auxval;
u16 power = 0;
+ int rc = 0;
+ int timeout = 0;
/* get codec */
mutex_lock(&wm->codec_mutex);
@@ -143,7 +145,9 @@ int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel)
/* Turn polling mode on to read AUX ADC */
wm->pen_probably_down = 1;
- wm->codec->poll_sample(wm, adcsel, &auxval);
+
+ while (rc != RC_VALID && timeout++ < 5)
+ rc = wm->codec->poll_sample(wm, adcsel, &auxval);
if (power_adc)
wm97xx_reg_write(wm, AC97_EXTENDED_MID, power | 0x8000);
@@ -152,8 +156,15 @@ int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel)
wm->pen_probably_down = 0;
+ if (timeout >= 5) {
+ dev_err(wm->dev,
+ "timeout reading auxadc %d, disabling digitiser\n",
+ adcsel);
+ wm->codec->dig_enable(wm, false);
+ }
+
mutex_unlock(&wm->codec_mutex);
- return auxval & 0xfff;
+ return (rc == RC_VALID ? auxval & 0xfff : -EBUSY);
}
EXPORT_SYMBOL_GPL(wm97xx_read_aux_adc);
@@ -684,8 +695,7 @@ static int wm97xx_probe(struct device *dev)
touch_reg_err:
platform_device_put(wm->touch_dev);
touch_err:
- platform_device_unregister(wm->battery_dev);
- wm->battery_dev = NULL;
+ platform_device_del(wm->battery_dev);
batt_reg_err:
platform_device_put(wm->battery_dev);
batt_err:
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-15 00:55:14 +0000