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Commit 6c65914a authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: keypad-nomadik-ske - remove the driver 

The users of this driver were removed in 2013 in commit 28633c54
("ARM: ux500: Rip out keypad initialisation which is no longer used").

Remove the driver as well.
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/Zr-gX0dfN4te_8VG@google.comSigned-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 105a0c76
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drivers/input/keyboard/Kconfig
View file @ 6c65914a
......@@ -473,17 +473,6 @@ config KEYBOARD_NEWTON
To compile this driver as a module, choose M here: the
module will be called newtonkbd.
config KEYBOARD_NOMADIK
tristate "ST-Ericsson Nomadik SKE keyboard"
depends on (ARCH_NOMADIK || ARCH_U8500 || COMPILE_TEST)
select INPUT_MATRIXKMAP
help
Say Y here if you want to use a keypad provided on the SKE controller
used on the Ux500 and Nomadik platforms
To compile this driver as a module, choose M here: the
module will be called nmk-ske-keypad.
config KEYBOARD_NSPIRE
tristate "TI-NSPIRE built-in keyboard"
depends on ARCH_NSPIRE && OF
......
drivers/input/keyboard/Makefile
View file @ 6c65914a
......@@ -45,7 +45,6 @@ obj-$(CONFIG_KEYBOARD_MPR121) += mpr121_touchkey.o
obj-$(CONFIG_KEYBOARD_MT6779) += mt6779-keypad.o
obj-$(CONFIG_KEYBOARD_MTK_PMIC) += mtk-pmic-keys.o
obj-$(CONFIG_KEYBOARD_NEWTON) += newtonkbd.o
obj-$(CONFIG_KEYBOARD_NOMADIK) += nomadik-ske-keypad.o
obj-$(CONFIG_KEYBOARD_NSPIRE) += nspire-keypad.o
obj-$(CONFIG_KEYBOARD_OMAP) += omap-keypad.o
obj-$(CONFIG_KEYBOARD_OMAP4) += omap4-keypad.o
......
drivers/input/keyboard/nomadik-ske-keypad.c deleted 100644 → 0
View file @ 105a0c76
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Naveen Kumar G <naveen.gaddipati@stericsson.com> for ST-Ericsson
* Author: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
*
* Keypad controller driver for the SKE (Scroll Key Encoder) module used in
* the Nomadik 8815 and Ux500 platforms.
*/
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/module.h>
#include <linux/platform_data/keypad-nomadik-ske.h>
/* SKE_CR bits */
#define SKE_KPMLT (0x1 << 6)
#define SKE_KPCN (0x7 << 3)
#define SKE_KPASEN (0x1 << 2)
#define SKE_KPASON (0x1 << 7)
/* SKE_IMSC bits */
#define SKE_KPIMA (0x1 << 2)
/* SKE_ICR bits */
#define SKE_KPICS (0x1 << 3)
#define SKE_KPICA (0x1 << 2)
/* SKE_RIS bits */
#define SKE_KPRISA (0x1 << 2)
#define SKE_KEYPAD_ROW_SHIFT 3
#define SKE_KPD_NUM_ROWS 8
#define SKE_KPD_NUM_COLS 8
/* keypad auto scan registers */
#define SKE_ASR0 0x20
#define SKE_ASR1 0x24
#define SKE_ASR2 0x28
#define SKE_ASR3 0x2C
#define SKE_NUM_ASRX_REGISTERS (4)
#define KEY_PRESSED_DELAY 10
/**
* struct ske_keypad - data structure used by keypad driver
* @irq: irq no
* @reg_base: ske registers base address
* @input: pointer to input device object
* @board: keypad platform device
* @keymap: matrix scan code table for keycodes
* @clk: clock structure pointer
* @pclk: clock structure pointer
* @ske_keypad_lock: spinlock protecting the keypad read/writes
*/
struct ske_keypad {
int irq;
void __iomem *reg_base;
struct input_dev *input;
const struct ske_keypad_platform_data *board;
unsigned short keymap[SKE_KPD_NUM_ROWS * SKE_KPD_NUM_COLS];
struct clk *clk;
struct clk *pclk;
spinlock_t ske_keypad_lock;
};
static void ske_keypad_set_bits(struct ske_keypad *keypad, u16 addr,
u8 mask, u8 data)
{
u32 ret;
spin_lock(&keypad->ske_keypad_lock);
ret = readl(keypad->reg_base + addr);
ret &= ~mask;
ret |= data;
writel(ret, keypad->reg_base + addr);
spin_unlock(&keypad->ske_keypad_lock);
}
/*
* ske_keypad_chip_init: init keypad controller configuration
*
* Enable Multi key press detection, auto scan mode
*/
static int __init ske_keypad_chip_init(struct ske_keypad *keypad)
{
u32 value;
int timeout = keypad->board->debounce_ms;
/* check SKE_RIS to be 0 */
while ((readl(keypad->reg_base + SKE_RIS) != 0x00000000) && timeout--)
cpu_relax();
if (timeout == -1)
return -EINVAL;
/*
* set debounce value
* keypad dbounce is configured in DBCR[15:8]
* dbounce value in steps of 32/32.768 ms
*/
spin_lock(&keypad->ske_keypad_lock);
value = readl(keypad->reg_base + SKE_DBCR);
value = value & 0xff;
value |= ((keypad->board->debounce_ms * 32000)/32768) << 8;
writel(value, keypad->reg_base + SKE_DBCR);
spin_unlock(&keypad->ske_keypad_lock);
/* enable multi key detection */
ske_keypad_set_bits(keypad, SKE_CR, 0x0, SKE_KPMLT);
/*
* set up the number of columns
* KPCN[5:3] defines no. of keypad columns to be auto scanned
*/
value = (keypad->board->kcol - 1) << 3;
ske_keypad_set_bits(keypad, SKE_CR, SKE_KPCN, value);
/* clear keypad interrupt for auto(and pending SW) scans */
ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA | SKE_KPICS);
/* un-mask keypad interrupts */
ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA);
/* enable automatic scan */
ske_keypad_set_bits(keypad, SKE_CR, 0x0, SKE_KPASEN);
return 0;
}
static void ske_keypad_report(struct ske_keypad *keypad, u8 status, int col)
{
int row = 0, code, pos;
struct input_dev *input = keypad->input;
u32 ske_ris;
int key_pressed;
int num_of_rows;
/* find out the row */
num_of_rows = hweight8(status);
do {
pos = __ffs(status);
row = pos;
status &= ~(1 << pos);
code = MATRIX_SCAN_CODE(row, col, SKE_KEYPAD_ROW_SHIFT);
ske_ris = readl(keypad->reg_base + SKE_RIS);
key_pressed = ske_ris & SKE_KPRISA;
input_event(input, EV_MSC, MSC_SCAN, code);
input_report_key(input, keypad->keymap[code], key_pressed);
input_sync(input);
num_of_rows--;
} while (num_of_rows);
}
static void ske_keypad_read_data(struct ske_keypad *keypad)
{
u8 status;
int col = 0;
int ske_asr, i;
/*
* Read the auto scan registers
*
* Each SKE_ASRx (x=0 to x=3) contains two row values.
* lower byte contains row value for column 2*x,
* upper byte contains row value for column 2*x + 1
*/
for (i = 0; i < SKE_NUM_ASRX_REGISTERS; i++) {
ske_asr = readl(keypad->reg_base + SKE_ASR0 + (4 * i));
if (!ske_asr)
continue;
/* now that ASRx is zero, find out the coloumn x and row y */
status = ske_asr & 0xff;
if (status) {
col = i * 2;
ske_keypad_report(keypad, status, col);
}
status = (ske_asr & 0xff00) >> 8;
if (status) {
col = (i * 2) + 1;
ske_keypad_report(keypad, status, col);
}
}
}
static irqreturn_t ske_keypad_irq(int irq, void *dev_id)
{
struct ske_keypad *keypad = dev_id;
int timeout = keypad->board->debounce_ms;
/* disable auto scan interrupt; mask the interrupt generated */
ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0);
ske_keypad_set_bits(keypad, SKE_ICR, 0x0, SKE_KPICA);
while ((readl(keypad->reg_base + SKE_CR) & SKE_KPASON) && --timeout)
cpu_relax();
/* SKEx registers are stable and can be read */
ske_keypad_read_data(keypad);
/* wait until raw interrupt is clear */
while ((readl(keypad->reg_base + SKE_RIS)) && --timeout)
msleep(KEY_PRESSED_DELAY);
/* enable auto scan interrupts */
ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA);
return IRQ_HANDLED;
}
static void ske_keypad_board_exit(void *data)
{
struct ske_keypad *keypad = data;
keypad->board->exit();
}
static int __init ske_keypad_probe(struct platform_device *pdev)
{
const struct ske_keypad_platform_data *plat =
dev_get_platdata(&pdev->dev);
struct device *dev = &pdev->dev;
struct ske_keypad *keypad;
struct input_dev *input;
int irq;
int error;
if (!plat) {
dev_err(&pdev->dev, "invalid keypad platform data\n");
return -EINVAL;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
keypad = devm_kzalloc(dev, sizeof(struct ske_keypad),
GFP_KERNEL);
input = devm_input_allocate_device(dev);
if (!keypad || !input) {
dev_err(&pdev->dev, "failed to allocate keypad memory\n");
return -ENOMEM;
}
keypad->irq = irq;
keypad->board = plat;
keypad->input = input;
spin_lock_init(&keypad->ske_keypad_lock);
keypad->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(keypad->reg_base))
return PTR_ERR(keypad->reg_base);
keypad->pclk = devm_clk_get_enabled(dev, "apb_pclk");
if (IS_ERR(keypad->pclk)) {
dev_err(&pdev->dev, "failed to get pclk\n");
return PTR_ERR(keypad->pclk);
}
keypad->clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(keypad->clk)) {
dev_err(&pdev->dev, "failed to get clk\n");
return PTR_ERR(keypad->clk);
}
input->id.bustype = BUS_HOST;
input->name = "ux500-ske-keypad";
input->dev.parent = &pdev->dev;
error = matrix_keypad_build_keymap(plat->keymap_data, NULL,
SKE_KPD_NUM_ROWS, SKE_KPD_NUM_COLS,
keypad->keymap, input);
if (error) {
dev_err(&pdev->dev, "Failed to build keymap\n");
return error;
}
input_set_capability(input, EV_MSC, MSC_SCAN);
if (!plat->no_autorepeat)
__set_bit(EV_REP, input->evbit);
/* go through board initialization helpers */
if (keypad->board->init)
keypad->board->init();
if (keypad->board->exit) {
error = devm_add_action_or_reset(dev, ske_keypad_board_exit,
keypad);
if (error)
return error;
}
error = ske_keypad_chip_init(keypad);
if (error) {
dev_err(&pdev->dev, "unable to init keypad hardware\n");
return error;
}
error = devm_request_threaded_irq(dev, keypad->irq,
NULL, ske_keypad_irq,
IRQF_ONESHOT, "ske-keypad", keypad);
if (error) {
dev_err(&pdev->dev, "allocate irq %d failed\n", keypad->irq);
return error;
}
error = input_register_device(input);
if (error) {
dev_err(&pdev->dev,
"unable to register input device: %d\n", error);
return error;
}
if (plat->wakeup_enable)
device_init_wakeup(&pdev->dev, true);
platform_set_drvdata(pdev, keypad);
return 0;
}
static int ske_keypad_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct ske_keypad *keypad = platform_get_drvdata(pdev);
int irq = platform_get_irq(pdev, 0);
if (device_may_wakeup(dev))
enable_irq_wake(irq);
else
ske_keypad_set_bits(keypad, SKE_IMSC, ~SKE_KPIMA, 0x0);
return 0;
}
static int ske_keypad_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct ske_keypad *keypad = platform_get_drvdata(pdev);
int irq = platform_get_irq(pdev, 0);
if (device_may_wakeup(dev))
disable_irq_wake(irq);
else
ske_keypad_set_bits(keypad, SKE_IMSC, 0x0, SKE_KPIMA);
return 0;
}
static DEFINE_SIMPLE_DEV_PM_OPS(ske_keypad_dev_pm_ops,
ske_keypad_suspend, ske_keypad_resume);
static struct platform_driver ske_keypad_driver = {
.driver = {
.name = "nmk-ske-keypad",
.pm = pm_sleep_ptr(&ske_keypad_dev_pm_ops),
},
};
module_platform_driver_probe(ske_keypad_driver, ske_keypad_probe);
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Naveen Kumar <naveen.gaddipati@stericsson.com> / Sundar Iyer <sundar.iyer@stericsson.com>");
MODULE_DESCRIPTION("Nomadik Scroll-Key-Encoder Keypad Driver");
MODULE_ALIAS("platform:nomadik-ske-keypad");
include/linux/platform_data/keypad-nomadik-ske.h deleted 100644 → 0
View file @ 105a0c76
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Naveen Kumar Gaddipati <naveen.gaddipati@stericsson.com>
*
* ux500 Scroll key and Keypad Encoder (SKE) header
*/
#ifndef __SKE_H
#define __SKE_H
#include <linux/input/matrix_keypad.h>
/* register definitions for SKE peripheral */
#define SKE_CR 0x00
#define SKE_VAL0 0x04
#define SKE_VAL1 0x08
#define SKE_DBCR 0x0C
#define SKE_IMSC 0x10
#define SKE_RIS 0x14
#define SKE_MIS 0x18
#define SKE_ICR 0x1C
/*
* Keypad module
*/
/**
* struct keypad_platform_data - structure for platform specific data
* @init: pointer to keypad init function
* @exit: pointer to keypad deinitialisation function
* @keymap_data: matrix scan code table for keycodes
* @krow: maximum number of rows
* @kcol: maximum number of columns
* @debounce_ms: platform specific debounce time
* @no_autorepeat: flag for auto repetition
* @wakeup_enable: allow waking up the system
*/
struct ske_keypad_platform_data {
int (*init)(void);
int (*exit)(void);
const struct matrix_keymap_data *keymap_data;
u8 krow;
u8 kcol;
u8 debounce_ms;
bool no_autorepeat;
bool wakeup_enable;
};
#endif /*__SKE_KPD_H*/
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