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Input: add driver for ADP5588 QWERTY I2C Keypad
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Michael Hennerich
Dmitry Torokhov
parent
38e783b381
commit
88751dd6ce
@ -24,6 +24,16 @@ config KEYBOARD_AAED2000
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To compile this driver as a module, choose M here: the
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module will be called aaed2000_kbd.
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config KEYBOARD_ADP5588
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tristate "ADP5588 I2C QWERTY Keypad and IO Expander"
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depends on I2C
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help
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Say Y here if you want to use a ADP5588 attached to your
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system I2C bus.
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To compile this driver as a module, choose M here: the
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module will be called adp5588-keys.
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config KEYBOARD_AMIGA
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tristate "Amiga keyboard"
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depends on AMIGA
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@ -5,6 +5,7 @@
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# Each configuration option enables a list of files.
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obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o
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obj-$(CONFIG_KEYBOARD_ADP5588) += adp5588-keys.o
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obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o
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obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o
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obj-$(CONFIG_KEYBOARD_ATKBD) += atkbd.o
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361
drivers/input/keyboard/adp5588-keys.c
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361
drivers/input/keyboard/adp5588-keys.c
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@ -0,0 +1,361 @@
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/*
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* File: drivers/input/keyboard/adp5588_keys.c
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* Description: keypad driver for ADP5588 I2C QWERTY Keypad and IO Expander
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* Bugs: Enter bugs at http://blackfin.uclinux.org/
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*
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* Copyright (C) 2008-2009 Analog Devices Inc.
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* Licensed under the GPL-2 or later.
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*/
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#include <linux/module.h>
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#include <linux/version.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include <linux/pm.h>
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#include <linux/platform_device.h>
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#include <linux/input.h>
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#include <linux/i2c.h>
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#include <linux/i2c/adp5588.h>
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/* Configuration Register1 */
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#define AUTO_INC (1 << 7)
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#define GPIEM_CFG (1 << 6)
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#define OVR_FLOW_M (1 << 5)
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#define INT_CFG (1 << 4)
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#define OVR_FLOW_IEN (1 << 3)
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#define K_LCK_IM (1 << 2)
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#define GPI_IEN (1 << 1)
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#define KE_IEN (1 << 0)
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/* Interrupt Status Register */
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#define CMP2_INT (1 << 5)
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#define CMP1_INT (1 << 4)
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#define OVR_FLOW_INT (1 << 3)
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#define K_LCK_INT (1 << 2)
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#define GPI_INT (1 << 1)
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#define KE_INT (1 << 0)
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/* Key Lock and Event Counter Register */
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#define K_LCK_EN (1 << 6)
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#define LCK21 0x30
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#define KEC 0xF
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/* Key Event Register xy */
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#define KEY_EV_PRESSED (1 << 7)
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#define KEY_EV_MASK (0x7F)
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#define KP_SEL(x) (0xFFFF >> (16 - x)) /* 2^x-1 */
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#define KEYP_MAX_EVENT 10
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/*
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* Early pre 4.0 Silicon required to delay readout by at least 25ms,
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* since the Event Counter Register updated 25ms after the interrupt
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* asserted.
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*/
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#define WA_DELAYED_READOUT_REVID(rev) ((rev) < 4)
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struct adp5588_kpad {
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struct i2c_client *client;
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struct input_dev *input;
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struct delayed_work work;
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unsigned long delay;
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unsigned short keycode[ADP5588_KEYMAPSIZE];
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};
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static int adp5588_read(struct i2c_client *client, u8 reg)
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{
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int ret = i2c_smbus_read_byte_data(client, reg);
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if (ret < 0)
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dev_err(&client->dev, "Read Error\n");
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return ret;
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}
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static int adp5588_write(struct i2c_client *client, u8 reg, u8 val)
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{
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return i2c_smbus_write_byte_data(client, reg, val);
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}
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static void adp5588_work(struct work_struct *work)
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{
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struct adp5588_kpad *kpad = container_of(work,
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struct adp5588_kpad, work.work);
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struct i2c_client *client = kpad->client;
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int i, key, status, ev_cnt;
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status = adp5588_read(client, INT_STAT);
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if (status & OVR_FLOW_INT) /* Unlikely and should never happen */
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dev_err(&client->dev, "Event Overflow Error\n");
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if (status & KE_INT) {
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ev_cnt = adp5588_read(client, KEY_LCK_EC_STAT) & KEC;
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if (ev_cnt) {
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for (i = 0; i < ev_cnt; i++) {
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key = adp5588_read(client, Key_EVENTA + i);
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input_report_key(kpad->input,
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kpad->keycode[(key & KEY_EV_MASK) - 1],
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key & KEY_EV_PRESSED);
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}
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input_sync(kpad->input);
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}
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}
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adp5588_write(client, INT_STAT, status); /* Status is W1C */
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}
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static irqreturn_t adp5588_irq(int irq, void *handle)
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{
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struct adp5588_kpad *kpad = handle;
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/*
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* use keventd context to read the event fifo registers
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* Schedule readout at least 25ms after notification for
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* REVID < 4
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*/
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schedule_delayed_work(&kpad->work, kpad->delay);
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return IRQ_HANDLED;
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}
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static int __devinit adp5588_setup(struct i2c_client *client)
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{
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struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
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int i, ret;
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ret = adp5588_write(client, KP_GPIO1, KP_SEL(pdata->rows));
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ret |= adp5588_write(client, KP_GPIO2, KP_SEL(pdata->cols) & 0xFF);
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ret |= adp5588_write(client, KP_GPIO3, KP_SEL(pdata->cols) >> 8);
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if (pdata->en_keylock) {
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ret |= adp5588_write(client, UNLOCK1, pdata->unlock_key1);
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ret |= adp5588_write(client, UNLOCK2, pdata->unlock_key2);
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ret |= adp5588_write(client, KEY_LCK_EC_STAT, K_LCK_EN);
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}
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for (i = 0; i < KEYP_MAX_EVENT; i++)
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ret |= adp5588_read(client, Key_EVENTA);
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ret |= adp5588_write(client, INT_STAT, CMP2_INT | CMP1_INT |
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OVR_FLOW_INT | K_LCK_INT |
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GPI_INT | KE_INT); /* Status is W1C */
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ret |= adp5588_write(client, CFG, INT_CFG | OVR_FLOW_IEN | KE_IEN);
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if (ret < 0) {
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dev_err(&client->dev, "Write Error\n");
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return ret;
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}
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return 0;
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}
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static int __devinit adp5588_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct adp5588_kpad *kpad;
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struct adp5588_kpad_platform_data *pdata = client->dev.platform_data;
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struct input_dev *input;
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unsigned int revid;
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int ret, i;
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int error;
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_BYTE_DATA)) {
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dev_err(&client->dev, "SMBUS Byte Data not Supported\n");
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return -EIO;
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}
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if (!pdata) {
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dev_err(&client->dev, "no platform data?\n");
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return -EINVAL;
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}
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if (!pdata->rows || !pdata->cols || !pdata->keymap) {
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dev_err(&client->dev, "no rows, cols or keymap from pdata\n");
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return -EINVAL;
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}
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if (pdata->keymapsize != ADP5588_KEYMAPSIZE) {
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dev_err(&client->dev, "invalid keymapsize\n");
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return -EINVAL;
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}
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if (!client->irq) {
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dev_err(&client->dev, "no IRQ?\n");
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return -EINVAL;
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}
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kpad = kzalloc(sizeof(*kpad), GFP_KERNEL);
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input = input_allocate_device();
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if (!kpad || !input) {
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error = -ENOMEM;
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goto err_free_mem;
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}
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kpad->client = client;
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kpad->input = input;
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INIT_DELAYED_WORK(&kpad->work, adp5588_work);
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ret = adp5588_read(client, DEV_ID);
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if (ret < 0) {
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error = ret;
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goto err_free_mem;
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}
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revid = (u8) ret & ADP5588_DEVICE_ID_MASK;
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if (WA_DELAYED_READOUT_REVID(revid))
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kpad->delay = msecs_to_jiffies(30);
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input->name = client->name;
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input->phys = "adp5588-keys/input0";
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input->dev.parent = &client->dev;
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input_set_drvdata(input, kpad);
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input->id.bustype = BUS_I2C;
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input->id.vendor = 0x0001;
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input->id.product = 0x0001;
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input->id.version = revid;
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input->keycodesize = sizeof(kpad->keycode[0]);
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input->keycodemax = pdata->keymapsize;
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input->keycode = kpad->keycode;
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memcpy(kpad->keycode, pdata->keymap,
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pdata->keymapsize * input->keycodesize);
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/* setup input device */
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__set_bit(EV_KEY, input->evbit);
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if (pdata->repeat)
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__set_bit(EV_REP, input->evbit);
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for (i = 0; i < input->keycodemax; i++)
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__set_bit(kpad->keycode[i] & KEY_MAX, input->keybit);
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__clear_bit(KEY_RESERVED, input->keybit);
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error = input_register_device(input);
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if (error) {
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dev_err(&client->dev, "unable to register input device\n");
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goto err_free_mem;
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}
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error = request_irq(client->irq, adp5588_irq,
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IRQF_TRIGGER_FALLING | IRQF_DISABLED,
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client->dev.driver->name, kpad);
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if (error) {
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dev_err(&client->dev, "irq %d busy?\n", client->irq);
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goto err_unreg_dev;
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}
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error = adp5588_setup(client);
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if (error)
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goto err_free_irq;
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device_init_wakeup(&client->dev, 1);
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i2c_set_clientdata(client, kpad);
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dev_info(&client->dev, "Rev.%d keypad, irq %d\n", revid, client->irq);
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return 0;
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err_free_irq:
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free_irq(client->irq, kpad);
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err_unreg_dev:
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input_unregister_device(input);
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input = NULL;
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err_free_mem:
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input_free_device(input);
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kfree(kpad);
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return error;
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}
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static int __devexit adp5588_remove(struct i2c_client *client)
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{
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struct adp5588_kpad *kpad = i2c_get_clientdata(client);
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adp5588_write(client, CFG, 0);
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free_irq(client->irq, kpad);
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cancel_delayed_work_sync(&kpad->work);
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input_unregister_device(kpad->input);
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i2c_set_clientdata(client, NULL);
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kfree(kpad);
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return 0;
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}
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#ifdef CONFIG_PM
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static int adp5588_suspend(struct device *dev)
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{
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struct adp5588_kpad *kpad = dev_get_drvdata(dev);
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struct i2c_client *client = kpad->client;
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disable_irq(client->irq);
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cancel_delayed_work_sync(&kpad->work);
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if (device_may_wakeup(&client->dev))
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enable_irq_wake(client->irq);
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return 0;
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}
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static int adp5588_resume(struct device *dev)
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{
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struct adp5588_kpad *kpad = dev_get_drvdata(dev);
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struct i2c_client *client = kpad->client;
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if (device_may_wakeup(&client->dev))
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disable_irq_wake(client->irq);
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enable_irq(client->irq);
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return 0;
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}
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static struct dev_pm_ops adp5588_dev_pm_ops = {
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.suspend = adp5588_suspend,
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.resume = adp5588_resume,
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};
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#endif
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static const struct i2c_device_id adp5588_id[] = {
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{ KBUILD_MODNAME, 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, adp5588_id);
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static struct i2c_driver adp5588_driver = {
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.driver = {
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.name = KBUILD_MODNAME,
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#ifdef CONFIG_PM
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.pm = &adp5588_dev_pm_ops,
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#endif
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},
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.probe = adp5588_probe,
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.remove = __devexit_p(adp5588_remove),
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.id_table = adp5588_id,
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};
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static int __init adp5588_init(void)
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{
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return i2c_add_driver(&adp5588_driver);
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}
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module_init(adp5588_init);
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static void __exit adp5588_exit(void)
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{
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i2c_del_driver(&adp5588_driver);
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}
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module_exit(adp5588_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
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MODULE_DESCRIPTION("ADP5588 Keypad driver");
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MODULE_ALIAS("platform:adp5588-keys");
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92
include/linux/i2c/adp5588.h
Normal file
92
include/linux/i2c/adp5588.h
Normal file
@ -0,0 +1,92 @@
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/*
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* Analog Devices ADP5588 I/O Expander and QWERTY Keypad Controller
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*
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* Copyright 2009 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef _ADP5588_H
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#define _ADP5588_H
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#define DEV_ID 0x00 /* Device ID */
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#define CFG 0x01 /* Configuration Register1 */
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#define INT_STAT 0x02 /* Interrupt Status Register */
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#define KEY_LCK_EC_STAT 0x03 /* Key Lock and Event Counter Register */
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#define Key_EVENTA 0x04 /* Key Event Register A */
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#define Key_EVENTB 0x05 /* Key Event Register B */
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#define Key_EVENTC 0x06 /* Key Event Register C */
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#define Key_EVENTD 0x07 /* Key Event Register D */
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#define Key_EVENTE 0x08 /* Key Event Register E */
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#define Key_EVENTF 0x09 /* Key Event Register F */
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#define Key_EVENTG 0x0A /* Key Event Register G */
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#define Key_EVENTH 0x0B /* Key Event Register H */
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#define Key_EVENTI 0x0C /* Key Event Register I */
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#define Key_EVENTJ 0x0D /* Key Event Register J */
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#define KP_LCK_TMR 0x0E /* Keypad Lock1 to Lock2 Timer */
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#define UNLOCK1 0x0F /* Unlock Key1 */
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#define UNLOCK2 0x10 /* Unlock Key2 */
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#define GPIO_INT_STAT1 0x11 /* GPIO Interrupt Status */
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#define GPIO_INT_STAT2 0x12 /* GPIO Interrupt Status */
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#define GPIO_INT_STAT3 0x13 /* GPIO Interrupt Status */
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#define GPIO_DAT_STAT1 0x14 /* GPIO Data Status, Read twice to clear */
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#define GPIO_DAT_STAT2 0x15 /* GPIO Data Status, Read twice to clear */
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#define GPIO_DAT_STAT3 0x16 /* GPIO Data Status, Read twice to clear */
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#define GPIO_DAT_OUT1 0x17 /* GPIO DATA OUT */
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#define GPIO_DAT_OUT2 0x18 /* GPIO DATA OUT */
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#define GPIO_DAT_OUT3 0x19 /* GPIO DATA OUT */
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#define GPIO_INT_EN1 0x1A /* GPIO Interrupt Enable */
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#define GPIO_INT_EN2 0x1B /* GPIO Interrupt Enable */
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#define GPIO_INT_EN3 0x1C /* GPIO Interrupt Enable */
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#define KP_GPIO1 0x1D /* Keypad or GPIO Selection */
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#define KP_GPIO2 0x1E /* Keypad or GPIO Selection */
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#define KP_GPIO3 0x1F /* Keypad or GPIO Selection */
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#define GPI_EM1 0x20 /* GPI Event Mode 1 */
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#define GPI_EM2 0x21 /* GPI Event Mode 2 */
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#define GPI_EM3 0x22 /* GPI Event Mode 3 */
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#define GPIO_DIR1 0x23 /* GPIO Data Direction */
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#define GPIO_DIR2 0x24 /* GPIO Data Direction */
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#define GPIO_DIR3 0x25 /* GPIO Data Direction */
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#define GPIO_INT_LVL1 0x26 /* GPIO Edge/Level Detect */
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#define GPIO_INT_LVL2 0x27 /* GPIO Edge/Level Detect */
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#define GPIO_INT_LVL3 0x28 /* GPIO Edge/Level Detect */
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#define Debounce_DIS1 0x29 /* Debounce Disable */
|
||||
#define Debounce_DIS2 0x2A /* Debounce Disable */
|
||||
#define Debounce_DIS3 0x2B /* Debounce Disable */
|
||||
#define GPIO_PULL1 0x2C /* GPIO Pull Disable */
|
||||
#define GPIO_PULL2 0x2D /* GPIO Pull Disable */
|
||||
#define GPIO_PULL3 0x2E /* GPIO Pull Disable */
|
||||
#define CMP_CFG_STAT 0x30 /* Comparator Configuration and Status Register */
|
||||
#define CMP_CONFG_SENS1 0x31 /* Sensor1 Comparator Configuration Register */
|
||||
#define CMP_CONFG_SENS2 0x32 /* L2 Light Sensor Reference Level, Output Falling for Sensor 1 */
|
||||
#define CMP1_LVL2_TRIP 0x33 /* L2 Light Sensor Hysteresis (Active when Output Rising) for Sensor 1 */
|
||||
#define CMP1_LVL2_HYS 0x34 /* L3 Light Sensor Reference Level, Output Falling For Sensor 1 */
|
||||
#define CMP1_LVL3_TRIP 0x35 /* L3 Light Sensor Hysteresis (Active when Output Rising) For Sensor 1 */
|
||||
#define CMP1_LVL3_HYS 0x36 /* Sensor 2 Comparator Configuration Register */
|
||||
#define CMP2_LVL2_TRIP 0x37 /* L2 Light Sensor Reference Level, Output Falling for Sensor 2 */
|
||||
#define CMP2_LVL2_HYS 0x38 /* L2 Light Sensor Hysteresis (Active when Output Rising) for Sensor 2 */
|
||||
#define CMP2_LVL3_TRIP 0x39 /* L3 Light Sensor Reference Level, Output Falling For Sensor 2 */
|
||||
#define CMP2_LVL3_HYS 0x3A /* L3 Light Sensor Hysteresis (Active when Output Rising) For Sensor 2 */
|
||||
#define CMP1_ADC_DAT_R1 0x3B /* Comparator 1 ADC data Register1 */
|
||||
#define CMP1_ADC_DAT_R2 0x3C /* Comparator 1 ADC data Register2 */
|
||||
#define CMP2_ADC_DAT_R1 0x3D /* Comparator 2 ADC data Register1 */
|
||||
#define CMP2_ADC_DAT_R2 0x3E /* Comparator 2 ADC data Register2 */
|
||||
|
||||
#define ADP5588_DEVICE_ID_MASK 0xF
|
||||
|
||||
/* Put one of these structures in i2c_board_info platform_data */
|
||||
|
||||
#define ADP5588_KEYMAPSIZE 80
|
||||
|
||||
struct adp5588_kpad_platform_data {
|
||||
int rows; /* Number of rows */
|
||||
int cols; /* Number of columns */
|
||||
const unsigned short *keymap; /* Pointer to keymap */
|
||||
unsigned short keymapsize; /* Keymap size */
|
||||
unsigned repeat:1; /* Enable key repeat */
|
||||
unsigned en_keylock:1; /* Enable Key Lock feature */
|
||||
unsigned short unlock_key1; /* Unlock Key 1 */
|
||||
unsigned short unlock_key2; /* Unlock Key 2 */
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user