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Message-Id: <1395154561-1199121-4-git-send-email-arnd@arndb.de>
Date: Tue, 18 Mar 2014 15:56:01 +0100
From: Arnd Bergmann <arnd@...db.de>
To: linux-arm-kernel@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
davinci-linux-open-source@...ux.davincidsp.com,
Sekhar Nori <nsekhar@...com>, Arnd Bergmann <arnd@...db.de>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
linux-input@...r.kernel.org
Subject: [PATCH 3/3] input: remove obsolete tnetv107x drivers
The tnetv107x platform is getting removed, so the touchscreen
and keypad drivers for this platform will no longer be needed
either.
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Sekhar Nori <nsekhar@...com>
Acked-by: Kevin Hilman <khilman@...aro.org>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-input@...r.kernel.org
---
drivers/input/keyboard/Kconfig | 10 -
drivers/input/keyboard/Makefile | 1 -
drivers/input/keyboard/tnetv107x-keypad.c | 329 -------------------------
drivers/input/touchscreen/Kconfig | 9 -
drivers/input/touchscreen/Makefile | 1 -
drivers/input/touchscreen/tnetv107x-ts.c | 384 ------------------------------
6 files changed, 734 deletions(-)
delete mode 100644 drivers/input/keyboard/tnetv107x-keypad.c
delete mode 100644 drivers/input/touchscreen/tnetv107x-ts.c
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index a673c9f..935dcaf 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -595,16 +595,6 @@ config KEYBOARD_TC3589X
To compile this driver as a module, choose M here: the
module will be called tc3589x-keypad.
-config KEYBOARD_TNETV107X
- tristate "TI TNETV107X keypad support"
- depends on ARCH_DAVINCI_TNETV107X
- select INPUT_MATRIXKMAP
- 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 a699b61..81014d9 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -53,7 +53,6 @@ obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
obj-$(CONFIG_KEYBOARD_TC3589X) += tc3589x-keypad.o
obj-$(CONFIG_KEYBOARD_TEGRA) += tegra-kbc.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
deleted file mode 100644
index 086511c..0000000
--- a/drivers/input/keyboard/tnetv107x-keypad.c
+++ /dev/null
@@ -1,329 +0,0 @@
-/*
- * 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/err.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>
-#include <linux/module.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;
- int irq_press;
- int 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 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 = dev_get_platdata(&pdev->dev);
- 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 (IS_ERR(kp->clk)) {
- dev_err(dev, "cannot claim device clock\n");
- error = PTR_ERR(kp->clk);
- goto error_clk;
- }
-
- error = request_threaded_irq(kp->irq_press, NULL, keypad_irq,
- IRQF_ONESHOT, 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,
- IRQF_ONESHOT, 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;
- }
-
- 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;
-
- 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);
-
- error = matrix_keypad_build_keymap(keymap_data, NULL,
- kp->rows, kp->cols,
- kp->keycodes, kp->input_dev);
- if (error) {
- dev_err(dev, "Failed to build keymap\n");
- goto error_reg;
- }
-
- if (!pdata->no_autorepeat)
- kp->input_dev->evbit[0] |= BIT_MASK(EV_REP);
- input_set_capability(kp->input_dev, EV_MSC, MSC_SCAN);
-
- input_set_drvdata(kp->input_dev, kp);
-
- 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:
- kfree(kp);
- return error;
-}
-
-static int 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));
- kfree(kp);
-
- return 0;
-}
-
-static struct platform_driver keypad_driver = {
- .probe = keypad_probe,
- .remove = keypad_remove,
- .driver.name = "tnetv107x-keypad",
- .driver.owner = THIS_MODULE,
-};
-module_platform_driver(keypad_driver);
-
-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 07e9e82..68edc9d 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -514,15 +514,6 @@ 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 62801f2..4bc954b 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -56,7 +56,6 @@ obj-$(CONFIG_TOUCHSCREEN_ST1232) += st1232.o
obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
obj-$(CONFIG_TOUCHSCREEN_SUR40) += sur40.o
obj-$(CONFIG_TOUCHSCREEN_TI_AM335X_TSC) += ti_am335x_tsc.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
deleted file mode 100644
index c47827a..0000000
--- a/drivers/input/touchscreen/tnetv107x-ts.c
+++ /dev/null
@@ -1,384 +0,0 @@
-/*
- * 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/module.h>
-#include <linux/kernel.h>
-#include <linux/err.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 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 (IS_ERR(ts->clk)) {
- dev_err(dev, "cannot claim device clock\n");
- error = PTR_ERR(ts->clk);
- goto error_clk;
- }
-
- error = request_threaded_irq(ts->tsc_irq, NULL, tsc_irq, IRQF_ONESHOT,
- 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:
- kfree(ts);
-
- return error;
-}
-
-static int 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));
- kfree(ts);
-
- return 0;
-}
-
-static struct platform_driver tsc_driver = {
- .probe = tsc_probe,
- .remove = tsc_remove,
- .driver.name = "tnetv107x-ts",
- .driver.owner = THIS_MODULE,
-};
-module_platform_driver(tsc_driver);
-
-MODULE_AUTHOR("Cyril Chemparathy");
-MODULE_DESCRIPTION("TNETV107X Touchscreen Driver");
-MODULE_ALIAS("platform:tnetv107x-ts");
-MODULE_LICENSE("GPL");
--
1.8.3.2
--
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