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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 10:59:31 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-25 10:59:31 -0700
commit72e58063d63c5f0a7bf65312f1e3a5ed9bb5c2ff (patch)
treedf5c21244d46aacef47e6b7fff3ad02c3612b15c /drivers/input
parent57c155d51e2f3d7411eeac5e7fd7634d2d1f6b4f (diff)
parent489e176c71f36654dcb8835926f7e5717b8b4c19 (diff)
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Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (50 commits) davinci: fix remaining board support after io_pgoffst removal davinci: mityomapl138: make file local data static arm/davinci: remove duplicated include davinci: Initial support for Omapl138-Hawkboard davinci: MityDSP-L138/MityARM-1808 read MAC address from I2C Prom davinci: add tnetv107x touchscreen platform device input: add driver for tnetv107x touchscreen controller davinci: add keypad config for tnetv107x evm board davinci: add tnetv107x keypad platform device input: add driver for tnetv107x on-chip keypad controller net: davinci_emac: cleanup unused cpdma code net: davinci_emac: switch to new cpdma layer net: davinci_emac: separate out cpdma code net: davinci_emac: cleanup unused mdio emac code omap: cleanup unused davinci mdio arch code davinci: cleanup mdio arch code and switch to phy_id net: davinci_emac: switch to new mdio omap: add mdio platform devices davinci: add mdio platform devices net: davinci_emac: separate out davinci mdio ... Fix up trivial conflict in drivers/input/keyboard/Kconfig (two entries added next to each other - one from the davinci merge, one from the input merge)
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/keyboard/Kconfig9
-rw-r--r--drivers/input/keyboard/Makefile1
-rw-r--r--drivers/input/keyboard/tnetv107x-keypad.c340
-rw-r--r--drivers/input/touchscreen/Kconfig9
-rw-r--r--drivers/input/touchscreen/Makefile1
-rw-r--r--drivers/input/touchscreen/tnetv107x-ts.c396
6 files changed, 756 insertions, 0 deletions
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 0426630..b8c51b9 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -443,6 +443,15 @@ config KEYBOARD_OMAP4
To compile this driver as a module, choose M here: the
module will be called omap4-keypad.
+config KEYBOARD_TNETV107X
+ tristate "TI TNETV107X keypad support"
+ depends on ARCH_DAVINCI_TNETV107X
+ help
+ Say Y here if you want to use the TNETV107X keypad.
+
+ To compile this driver as a module, choose M here: the
+ module will be called tnetv107x-keypad.
+
config KEYBOARD_TWL4030
tristate "TI TWL4030/TWL5030/TPS659x0 keypad support"
depends on TWL4030_CORE
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index c13809c..a34452e 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_KEYBOARD_SH_KEYSC) += sh_keysc.o
obj-$(CONFIG_KEYBOARD_STMPE) += stmpe-keypad.o
obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
+obj-$(CONFIG_KEYBOARD_TNETV107X) += tnetv107x-keypad.o
obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o
obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o
obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o
diff --git a/drivers/input/keyboard/tnetv107x-keypad.c b/drivers/input/keyboard/tnetv107x-keypad.c
new file mode 100644
index 0000000..b4a81eb
--- /dev/null
+++ b/drivers/input/keyboard/tnetv107x-keypad.c
@@ -0,0 +1,340 @@
+/*
+ * Texas Instruments TNETV107X Keypad Driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/input/matrix_keypad.h>
+
+#define BITS(x) (BIT(x) - 1)
+
+#define KEYPAD_ROWS 9
+#define KEYPAD_COLS 9
+
+#define DEBOUNCE_MIN 0x400ul
+#define DEBOUNCE_MAX 0x3ffffffful
+
+struct keypad_regs {
+ u32 rev;
+ u32 mode;
+ u32 mask;
+ u32 pol;
+ u32 dclock;
+ u32 rclock;
+ u32 stable_cnt;
+ u32 in_en;
+ u32 out;
+ u32 out_en;
+ u32 in;
+ u32 lock;
+ u32 pres[3];
+};
+
+#define keypad_read(kp, reg) __raw_readl(&(kp)->regs->reg)
+#define keypad_write(kp, reg, val) __raw_writel(val, &(kp)->regs->reg)
+
+struct keypad_data {
+ struct input_dev *input_dev;
+ struct resource *res;
+ struct keypad_regs __iomem *regs;
+ struct clk *clk;
+ struct device *dev;
+ spinlock_t lock;
+ u32 irq_press;
+ u32 irq_release;
+ int rows, cols, row_shift;
+ int debounce_ms, active_low;
+ u32 prev_keys[3];
+ unsigned short keycodes[];
+};
+
+static irqreturn_t keypad_irq(int irq, void *data)
+{
+ struct keypad_data *kp = data;
+ int i, bit, val, row, col, code;
+ unsigned long flags;
+ u32 curr_keys[3];
+ u32 change;
+
+ spin_lock_irqsave(&kp->lock, flags);
+
+ memset(curr_keys, 0, sizeof(curr_keys));
+ if (irq == kp->irq_press)
+ for (i = 0; i < 3; i++)
+ curr_keys[i] = keypad_read(kp, pres[i]);
+
+ for (i = 0; i < 3; i++) {
+ change = curr_keys[i] ^ kp->prev_keys[i];
+
+ while (change) {
+ bit = fls(change) - 1;
+ change ^= BIT(bit);
+ val = curr_keys[i] & BIT(bit);
+ bit += i * 32;
+ row = bit / KEYPAD_COLS;
+ col = bit % KEYPAD_COLS;
+
+ code = MATRIX_SCAN_CODE(row, col, kp->row_shift);
+ input_event(kp->input_dev, EV_MSC, MSC_SCAN, code);
+ input_report_key(kp->input_dev, kp->keycodes[code],
+ val);
+ }
+ }
+ input_sync(kp->input_dev);
+ memcpy(kp->prev_keys, curr_keys, sizeof(curr_keys));
+
+ if (irq == kp->irq_press)
+ keypad_write(kp, lock, 0); /* Allow hardware updates */
+
+ spin_unlock_irqrestore(&kp->lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+static int keypad_start(struct input_dev *dev)
+{
+ struct keypad_data *kp = input_get_drvdata(dev);
+ unsigned long mask, debounce, clk_rate_khz;
+ unsigned long flags;
+
+ clk_enable(kp->clk);
+ clk_rate_khz = clk_get_rate(kp->clk) / 1000;
+
+ spin_lock_irqsave(&kp->lock, flags);
+
+ /* Initialize device registers */
+ keypad_write(kp, mode, 0);
+
+ mask = BITS(kp->rows) << KEYPAD_COLS;
+ mask |= BITS(kp->cols);
+ keypad_write(kp, mask, ~mask);
+
+ keypad_write(kp, pol, kp->active_low ? 0 : 0x3ffff);
+ keypad_write(kp, stable_cnt, 3);
+
+ debounce = kp->debounce_ms * clk_rate_khz;
+ debounce = clamp(debounce, DEBOUNCE_MIN, DEBOUNCE_MAX);
+ keypad_write(kp, dclock, debounce);
+ keypad_write(kp, rclock, 4 * debounce);
+
+ keypad_write(kp, in_en, 1);
+
+ spin_unlock_irqrestore(&kp->lock, flags);
+
+ return 0;
+}
+
+static void keypad_stop(struct input_dev *dev)
+{
+ struct keypad_data *kp = input_get_drvdata(dev);
+
+ synchronize_irq(kp->irq_press);
+ synchronize_irq(kp->irq_release);
+ clk_disable(kp->clk);
+}
+
+static int __devinit keypad_probe(struct platform_device *pdev)
+{
+ const struct matrix_keypad_platform_data *pdata;
+ const struct matrix_keymap_data *keymap_data;
+ struct device *dev = &pdev->dev;
+ struct keypad_data *kp;
+ int error = 0, sz, row_shift;
+ u32 rev = 0;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(dev, "cannot find device data\n");
+ return -EINVAL;
+ }
+
+ keymap_data = pdata->keymap_data;
+ if (!keymap_data) {
+ dev_err(dev, "cannot find keymap data\n");
+ return -EINVAL;
+ }
+
+ row_shift = get_count_order(pdata->num_col_gpios);
+ sz = offsetof(struct keypad_data, keycodes);
+ sz += (pdata->num_row_gpios << row_shift) * sizeof(kp->keycodes[0]);
+ kp = kzalloc(sz, GFP_KERNEL);
+ if (!kp) {
+ dev_err(dev, "cannot allocate device info\n");
+ return -ENOMEM;
+ }
+
+ kp->dev = dev;
+ kp->rows = pdata->num_row_gpios;
+ kp->cols = pdata->num_col_gpios;
+ kp->row_shift = row_shift;
+ platform_set_drvdata(pdev, kp);
+ spin_lock_init(&kp->lock);
+
+ kp->irq_press = platform_get_irq_byname(pdev, "press");
+ kp->irq_release = platform_get_irq_byname(pdev, "release");
+ if (kp->irq_press < 0 || kp->irq_release < 0) {
+ dev_err(dev, "cannot determine device interrupts\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ kp->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!kp->res) {
+ dev_err(dev, "cannot determine register area\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ if (!request_mem_region(kp->res->start, resource_size(kp->res),
+ pdev->name)) {
+ dev_err(dev, "cannot claim register memory\n");
+ kp->res = NULL;
+ error = -EINVAL;
+ goto error_res;
+ }
+
+ kp->regs = ioremap(kp->res->start, resource_size(kp->res));
+ if (!kp->regs) {
+ dev_err(dev, "cannot map register memory\n");
+ error = -ENOMEM;
+ goto error_map;
+ }
+
+ kp->clk = clk_get(dev, NULL);
+ if (!kp->clk) {
+ dev_err(dev, "cannot claim device clock\n");
+ error = -EINVAL;
+ goto error_clk;
+ }
+
+ error = request_threaded_irq(kp->irq_press, NULL, keypad_irq, 0,
+ dev_name(dev), kp);
+ if (error < 0) {
+ dev_err(kp->dev, "Could not allocate keypad press key irq\n");
+ goto error_irq_press;
+ }
+
+ error = request_threaded_irq(kp->irq_release, NULL, keypad_irq, 0,
+ dev_name(dev), kp);
+ if (error < 0) {
+ dev_err(kp->dev, "Could not allocate keypad release key irq\n");
+ goto error_irq_release;
+ }
+
+ kp->input_dev = input_allocate_device();
+ if (!kp->input_dev) {
+ dev_err(dev, "cannot allocate input device\n");
+ error = -ENOMEM;
+ goto error_input;
+ }
+ input_set_drvdata(kp->input_dev, kp);
+
+ kp->input_dev->name = pdev->name;
+ kp->input_dev->dev.parent = &pdev->dev;
+ kp->input_dev->open = keypad_start;
+ kp->input_dev->close = keypad_stop;
+ kp->input_dev->evbit[0] = BIT_MASK(EV_KEY);
+ if (!pdata->no_autorepeat)
+ kp->input_dev->evbit[0] |= BIT_MASK(EV_REP);
+
+ clk_enable(kp->clk);
+ rev = keypad_read(kp, rev);
+ kp->input_dev->id.bustype = BUS_HOST;
+ kp->input_dev->id.product = ((rev >> 8) & 0x07);
+ kp->input_dev->id.version = ((rev >> 16) & 0xfff);
+ clk_disable(kp->clk);
+
+ kp->input_dev->keycode = kp->keycodes;
+ kp->input_dev->keycodesize = sizeof(kp->keycodes[0]);
+ kp->input_dev->keycodemax = kp->rows << kp->row_shift;
+
+ matrix_keypad_build_keymap(keymap_data, kp->row_shift, kp->keycodes,
+ kp->input_dev->keybit);
+
+ input_set_capability(kp->input_dev, EV_MSC, MSC_SCAN);
+
+ error = input_register_device(kp->input_dev);
+ if (error < 0) {
+ dev_err(dev, "Could not register input device\n");
+ goto error_reg;
+ }
+
+ return 0;
+
+
+error_reg:
+ input_free_device(kp->input_dev);
+error_input:
+ free_irq(kp->irq_release, kp);
+error_irq_release:
+ free_irq(kp->irq_press, kp);
+error_irq_press:
+ clk_put(kp->clk);
+error_clk:
+ iounmap(kp->regs);
+error_map:
+ release_mem_region(kp->res->start, resource_size(kp->res));
+error_res:
+ platform_set_drvdata(pdev, NULL);
+ kfree(kp);
+ return error;
+}
+
+static int __devexit keypad_remove(struct platform_device *pdev)
+{
+ struct keypad_data *kp = platform_get_drvdata(pdev);
+
+ free_irq(kp->irq_press, kp);
+ free_irq(kp->irq_release, kp);
+ input_unregister_device(kp->input_dev);
+ clk_put(kp->clk);
+ iounmap(kp->regs);
+ release_mem_region(kp->res->start, resource_size(kp->res));
+ platform_set_drvdata(pdev, NULL);
+ kfree(kp);
+
+ return 0;
+}
+
+static struct platform_driver keypad_driver = {
+ .probe = keypad_probe,
+ .remove = __devexit_p(keypad_remove),
+ .driver.name = "tnetv107x-keypad",
+ .driver.owner = THIS_MODULE,
+};
+
+static int __init keypad_init(void)
+{
+ return platform_driver_register(&keypad_driver);
+}
+
+static void __exit keypad_exit(void)
+{
+ platform_driver_unregister(&keypad_driver);
+}
+
+module_init(keypad_init);
+module_exit(keypad_exit);
+
+MODULE_AUTHOR("Cyril Chemparathy");
+MODULE_DESCRIPTION("TNETV107X Keypad Driver");
+MODULE_ALIAS("platform: tnetv107x-keypad");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 0ea361f..06ea8da 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -362,6 +362,15 @@ config TOUCHSCREEN_MIGOR
To compile this driver as a module, choose M here: the
module will be called migor_ts.
+config TOUCHSCREEN_TNETV107X
+ tristate "TI TNETV107X touchscreen support"
+ depends on ARCH_DAVINCI_TNETV107X
+ help
+ Say Y here if you want to use the TNETV107X touchscreen.
+
+ To compile this driver as a module, choose M here: the
+ module will be called tnetv107x-ts.
+
config TOUCHSCREEN_TOUCHRIGHT
tristate "Touchright serial touchscreen"
select SERIO
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 99b353c..7cc1b4f 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -40,6 +40,7 @@ obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o
obj-$(CONFIG_TOUCHSCREEN_QT602240) += qt602240_ts.o
obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
+obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
diff --git a/drivers/input/touchscreen/tnetv107x-ts.c b/drivers/input/touchscreen/tnetv107x-ts.c
new file mode 100644
index 0000000..cf1dba2
--- /dev/null
+++ b/drivers/input/touchscreen/tnetv107x-ts.c
@@ -0,0 +1,396 @@
+/*
+ * Texas Instruments TNETV107X Touchscreen Driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/ctype.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+
+#include <mach/tnetv107x.h>
+
+#define TSC_PENUP_POLL (HZ / 5)
+#define IDLE_TIMEOUT 100 /* msec */
+
+/*
+ * The first and last samples of a touch interval are usually garbage and need
+ * to be filtered out with these devices. The following definitions control
+ * the number of samples skipped.
+ */
+#define TSC_HEAD_SKIP 1
+#define TSC_TAIL_SKIP 1
+#define TSC_SKIP (TSC_HEAD_SKIP + TSC_TAIL_SKIP + 1)
+#define TSC_SAMPLES (TSC_SKIP + 1)
+
+/* Register Offsets */
+struct tsc_regs {
+ u32 rev;
+ u32 tscm;
+ u32 bwcm;
+ u32 swc;
+ u32 adcchnl;
+ u32 adcdata;
+ u32 chval[4];
+};
+
+/* TSC Mode Configuration Register (tscm) bits */
+#define WMODE BIT(0)
+#define TSKIND BIT(1)
+#define ZMEASURE_EN BIT(2)
+#define IDLE BIT(3)
+#define TSC_EN BIT(4)
+#define STOP BIT(5)
+#define ONE_SHOT BIT(6)
+#define SINGLE BIT(7)
+#define AVG BIT(8)
+#define AVGNUM(x) (((x) & 0x03) << 9)
+#define PVSTC(x) (((x) & 0x07) << 11)
+#define PON BIT(14)
+#define PONBG BIT(15)
+#define AFERST BIT(16)
+
+/* ADC DATA Capture Register bits */
+#define DATA_VALID BIT(16)
+
+/* Register Access Macros */
+#define tsc_read(ts, reg) __raw_readl(&(ts)->regs->reg)
+#define tsc_write(ts, reg, val) __raw_writel(val, &(ts)->regs->reg);
+#define tsc_set_bits(ts, reg, val) \
+ tsc_write(ts, reg, tsc_read(ts, reg) | (val))
+#define tsc_clr_bits(ts, reg, val) \
+ tsc_write(ts, reg, tsc_read(ts, reg) & ~(val))
+
+struct sample {
+ int x, y, p;
+};
+
+struct tsc_data {
+ struct input_dev *input_dev;
+ struct resource *res;
+ struct tsc_regs __iomem *regs;
+ struct timer_list timer;
+ spinlock_t lock;
+ struct clk *clk;
+ struct device *dev;
+ int sample_count;
+ struct sample samples[TSC_SAMPLES];
+ int tsc_irq;
+};
+
+static int tsc_read_sample(struct tsc_data *ts, struct sample* sample)
+{
+ int x, y, z1, z2, t, p = 0;
+ u32 val;
+
+ val = tsc_read(ts, chval[0]);
+ if (val & DATA_VALID)
+ x = val & 0xffff;
+ else
+ return -EINVAL;
+
+ y = tsc_read(ts, chval[1]) & 0xffff;
+ z1 = tsc_read(ts, chval[2]) & 0xffff;
+ z2 = tsc_read(ts, chval[3]) & 0xffff;
+
+ if (z1) {
+ t = ((600 * x) * (z2 - z1));
+ p = t / (u32) (z1 << 12);
+ if (p < 0)
+ p = 0;
+ }
+
+ sample->x = x;
+ sample->y = y;
+ sample->p = p;
+
+ return 0;
+}
+
+static void tsc_poll(unsigned long data)
+{
+ struct tsc_data *ts = (struct tsc_data *)data;
+ unsigned long flags;
+ int i, val, x, y, p;
+
+ spin_lock_irqsave(&ts->lock, flags);
+
+ if (ts->sample_count >= TSC_SKIP) {
+ input_report_abs(ts->input_dev, ABS_PRESSURE, 0);
+ input_report_key(ts->input_dev, BTN_TOUCH, 0);
+ input_sync(ts->input_dev);
+ } else if (ts->sample_count > 0) {
+ /*
+ * A touch event lasted less than our skip count. Salvage and
+ * report anyway.
+ */
+ for (i = 0, val = 0; i < ts->sample_count; i++)
+ val += ts->samples[i].x;
+ x = val / ts->sample_count;
+
+ for (i = 0, val = 0; i < ts->sample_count; i++)
+ val += ts->samples[i].y;
+ y = val / ts->sample_count;
+
+ for (i = 0, val = 0; i < ts->sample_count; i++)
+ val += ts->samples[i].p;
+ p = val / ts->sample_count;
+
+ input_report_abs(ts->input_dev, ABS_X, x);
+ input_report_abs(ts->input_dev, ABS_Y, y);
+ input_report_abs(ts->input_dev, ABS_PRESSURE, p);
+ input_report_key(ts->input_dev, BTN_TOUCH, 1);
+ input_sync(ts->input_dev);
+ }
+
+ ts->sample_count = 0;
+
+ spin_unlock_irqrestore(&ts->lock, flags);
+}
+
+static irqreturn_t tsc_irq(int irq, void *dev_id)
+{
+ struct tsc_data *ts = (struct tsc_data *)dev_id;
+ struct sample *sample;
+ int index;
+
+ spin_lock(&ts->lock);
+
+ index = ts->sample_count % TSC_SAMPLES;
+ sample = &ts->samples[index];
+ if (tsc_read_sample(ts, sample) < 0)
+ goto out;
+
+ if (++ts->sample_count >= TSC_SKIP) {
+ index = (ts->sample_count - TSC_TAIL_SKIP - 1) % TSC_SAMPLES;
+ sample = &ts->samples[index];
+
+ input_report_abs(ts->input_dev, ABS_X, sample->x);
+ input_report_abs(ts->input_dev, ABS_Y, sample->y);
+ input_report_abs(ts->input_dev, ABS_PRESSURE, sample->p);
+ if (ts->sample_count == TSC_SKIP)
+ input_report_key(ts->input_dev, BTN_TOUCH, 1);
+ input_sync(ts->input_dev);
+ }
+ mod_timer(&ts->timer, jiffies + TSC_PENUP_POLL);
+out:
+ spin_unlock(&ts->lock);
+ return IRQ_HANDLED;
+}
+
+static int tsc_start(struct input_dev *dev)
+{
+ struct tsc_data *ts = input_get_drvdata(dev);
+ unsigned long timeout = jiffies + msecs_to_jiffies(IDLE_TIMEOUT);
+ u32 val;
+
+ clk_enable(ts->clk);
+
+ /* Go to idle mode, before any initialization */
+ while (time_after(timeout, jiffies)) {
+ if (tsc_read(ts, tscm) & IDLE)
+ break;
+ }
+
+ if (time_before(timeout, jiffies)) {
+ dev_warn(ts->dev, "timeout waiting for idle\n");
+ clk_disable(ts->clk);
+ return -EIO;
+ }
+
+ /* Configure TSC Control register*/
+ val = (PONBG | PON | PVSTC(4) | ONE_SHOT | ZMEASURE_EN);
+ tsc_write(ts, tscm, val);
+
+ /* Bring TSC out of reset: Clear AFE reset bit */
+ val &= ~(AFERST);
+ tsc_write(ts, tscm, val);
+
+ /* Configure all pins for hardware control*/
+ tsc_write(ts, bwcm, 0);
+
+ /* Finally enable the TSC */
+ tsc_set_bits(ts, tscm, TSC_EN);
+
+ return 0;
+}
+
+static void tsc_stop(struct input_dev *dev)
+{
+ struct tsc_data *ts = input_get_drvdata(dev);
+
+ tsc_clr_bits(ts, tscm, TSC_EN);
+ synchronize_irq(ts->tsc_irq);
+ del_timer_sync(&ts->timer);
+ clk_disable(ts->clk);
+}
+
+static int __devinit tsc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tsc_data *ts;
+ int error = 0;
+ u32 rev = 0;
+
+ ts = kzalloc(sizeof(struct tsc_data), GFP_KERNEL);
+ if (!ts) {
+ dev_err(dev, "cannot allocate device info\n");
+ return -ENOMEM;
+ }
+
+ ts->dev = dev;
+ spin_lock_init(&ts->lock);
+ setup_timer(&ts->timer, tsc_poll, (unsigned long)ts);
+ platform_set_drvdata(pdev, ts);
+
+ ts->tsc_irq = platform_get_irq(pdev, 0);
+ if (ts->tsc_irq < 0) {
+ dev_err(dev, "cannot determine device interrupt\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ ts->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!ts->res) {
+ dev_err(dev, "cannot determine register area\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ if (!request_mem_region(ts->res->start, resource_size(ts->res),
+ pdev->name)) {
+ dev_err(dev, "cannot claim register memory\n");
+ ts->res = NULL;
+ error = -EINVAL;
+ goto error_res;
+ }
+
+ ts->regs = ioremap(ts->res->start, resource_size(ts->res));
+ if (!ts->regs) {
+ dev_err(dev, "cannot map register memory\n");
+ error = -ENOMEM;
+ goto error_map;
+ }
+
+ ts->clk = clk_get(dev, NULL);
+ if (!ts->clk) {
+ dev_err(dev, "cannot claim device clock\n");
+ error = -EINVAL;
+ goto error_clk;
+ }
+
+ error = request_threaded_irq(ts->tsc_irq, NULL, tsc_irq, 0,
+ dev_name(dev), ts);
+ if (error < 0) {
+ dev_err(ts->dev, "Could not allocate ts irq\n");
+ goto error_irq;
+ }
+
+ ts->input_dev = input_allocate_device();
+ if (!ts->input_dev) {
+ dev_err(dev, "cannot allocate input device\n");
+ error = -ENOMEM;
+ goto error_input;
+ }
+ input_set_drvdata(ts->input_dev, ts);
+
+ ts->input_dev->name = pdev->name;
+ ts->input_dev->id.bustype = BUS_HOST;
+ ts->input_dev->dev.parent = &pdev->dev;
+ ts->input_dev->open = tsc_start;
+ ts->input_dev->close = tsc_stop;
+
+ clk_enable(ts->clk);
+ rev = tsc_read(ts, rev);
+ ts->input_dev->id.product = ((rev >> 8) & 0x07);
+ ts->input_dev->id.version = ((rev >> 16) & 0xfff);
+ clk_disable(ts->clk);
+
+ __set_bit(EV_KEY, ts->input_dev->evbit);
+ __set_bit(EV_ABS, ts->input_dev->evbit);
+ __set_bit(BTN_TOUCH, ts->input_dev->keybit);
+
+ input_set_abs_params(ts->input_dev, ABS_X, 0, 0xffff, 5, 0);
+ input_set_abs_params(ts->input_dev, ABS_Y, 0, 0xffff, 5, 0);
+ input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 4095, 128, 0);
+
+ error = input_register_device(ts->input_dev);
+ if (error < 0) {
+ dev_err(dev, "failed input device registration\n");
+ goto error_reg;
+ }
+
+ return 0;
+
+error_reg:
+ input_free_device(ts->input_dev);
+error_input:
+ free_irq(ts->tsc_irq, ts);
+error_irq:
+ clk_put(ts->clk);
+error_clk:
+ iounmap(ts->regs);
+error_map:
+ release_mem_region(ts->res->start, resource_size(ts->res));
+error_res:
+ platform_set_drvdata(pdev, NULL);
+ kfree(ts);
+
+ return error;
+}
+
+static int __devexit tsc_remove(struct platform_device *pdev)
+{
+ struct tsc_data *ts = platform_get_drvdata(pdev);
+
+ input_unregister_device(ts->input_dev);
+ free_irq(ts->tsc_irq, ts);
+ clk_put(ts->clk);
+ iounmap(ts->regs);
+ release_mem_region(ts->res->start, resource_size(ts->res));
+ platform_set_drvdata(pdev, NULL);
+ kfree(ts);
+
+ return 0;
+}
+
+static struct platform_driver tsc_driver = {
+ .probe = tsc_probe,
+ .remove = __devexit_p(tsc_remove),
+ .driver.name = "tnetv107x-ts",
+ .driver.owner = THIS_MODULE,
+};
+
+static int __init tsc_init(void)
+{
+ return platform_driver_register(&tsc_driver);
+}
+
+static void __exit tsc_exit(void)
+{
+ platform_driver_unregister(&tsc_driver);
+}
+
+module_init(tsc_init);
+module_exit(tsc_exit);
+
+MODULE_AUTHOR("Cyril Chemparathy");
+MODULE_DESCRIPTION("TNETV107X Touchscreen Driver");
+MODULE_ALIAS("platform: tnetv107x-ts");
+MODULE_LICENSE("GPL");