From patchwork Thu Sep 17 18:24:10 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Frysinger X-Patchwork-Id: 48326 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n8HIOHR3005983 for ; Thu, 17 Sep 2009 18:24:17 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751167AbZIQSYL (ORCPT ); Thu, 17 Sep 2009 14:24:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751296AbZIQSYL (ORCPT ); Thu, 17 Sep 2009 14:24:11 -0400 Received: from smtp.gentoo.org ([140.211.166.183]:34708 "EHLO smtp.gentoo.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751167AbZIQSYK (ORCPT ); Thu, 17 Sep 2009 14:24:10 -0400 Received: from localhost.localdomain (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 5790B645D1; Thu, 17 Sep 2009 18:24:12 +0000 (UTC) From: Mike Frysinger To: linux-input@vger.kernel.org, Dmitry Torokhov Cc: linux-kernel@vger.kernel.org, uclinux-dist-devel@blackfin.uclinux.org, Michael Hennerich , Bryan Wu Subject: [PATCH] input/keyboard: new driver for ADP5520 MFD PMICs Date: Thu, 17 Sep 2009 14:24:10 -0400 Message-Id: <1253211850-29309-1-git-send-email-vapier@gentoo.org> X-Mailer: git-send-email 1.6.5.rc1 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: Michael Hennerich Signed-off-by: Michael Hennerich Signed-off-by: Bryan Wu Signed-off-by: Mike Frysinger --- drivers/input/keyboard/Kconfig | 10 ++ drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/adp5520-keys.c | 219 +++++++++++++++++++++++++++++++++ 3 files changed, 230 insertions(+), 0 deletions(-) create mode 100644 drivers/input/keyboard/adp5520-keys.c diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index e0bfcd7..53c9561 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -392,4 +392,14 @@ config KEYBOARD_ADP5588 To compile this driver as a module, choose M here: the module will be called adp5588-keys. +config KEYBOARD_ADP5520 + tristate "Keypad Support for ADP5520 PMIC" + depends on PMIC_ADP5520 + help + This option enables support for the keypad scan matrix + on Analog Devices ADP5520 PMICs. + + To compile this driver as a module, choose M here: the module will + be called adp5520-keys. + endif diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index 72082a4..c541489 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -5,6 +5,7 @@ # Each configuration option enables a list of files. obj-$(CONFIG_KEYBOARD_AAED2000) += aaed2000_kbd.o +obj-$(CONFIG_KEYBOARD_ADP5520) += adp5520-keys.o obj-$(CONFIG_KEYBOARD_ADP5588) += adp5588-keys.o obj-$(CONFIG_KEYBOARD_AMIGA) += amikbd.o obj-$(CONFIG_KEYBOARD_ATARI) += atakbd.o diff --git a/drivers/input/keyboard/adp5520-keys.c b/drivers/input/keyboard/adp5520-keys.c new file mode 100644 index 0000000..cc2e1ed --- /dev/null +++ b/drivers/input/keyboard/adp5520-keys.c @@ -0,0 +1,219 @@ +/* + * Keypad driver for Analog Devices ADP5520 MFD PMICs + * + * Copyright 2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include +#include +#include +#include +#include +#include + +struct adp5520_keys { + struct input_dev *input; + struct notifier_block notifier; + struct device *master; + unsigned short keycode[ADP5520_KEYMAPSIZE]; +}; + +static void adp5520_keys_report_event(struct adp5520_keys *dev, + unsigned short keymask, int value) +{ + int i; + + for (i = 0; i < ADP5520_MAXKEYS; i++) + if (keymask & (1 << i)) + input_report_key(dev->input, dev->keycode[i], value); + + input_sync(dev->input); +} + +static int adp5520_keys_notifier(struct notifier_block *nb, + unsigned long event, void *data) +{ + struct adp5520_keys *dev; + uint8_t reg_val_low, reg_val_high; + unsigned short keymask; + + dev = container_of(nb, struct adp5520_keys, notifier); + + if (event & KP_INT) { + adp5520_read(dev->master, KP_INT_STAT_1, ®_val_low); + adp5520_read(dev->master, KP_INT_STAT_2, ®_val_high); + + keymask = (reg_val_high << 8) | reg_val_low; + /* Read twice to clear */ + adp5520_read(dev->master, KP_INT_STAT_1, ®_val_low); + adp5520_read(dev->master, KP_INT_STAT_2, ®_val_high); + keymask |= (reg_val_high << 8) | reg_val_low; + adp5520_keys_report_event(dev, keymask, 1); + } + + if (event & KR_INT) { + adp5520_read(dev->master, KR_INT_STAT_1, ®_val_low); + adp5520_read(dev->master, KR_INT_STAT_2, ®_val_high); + + keymask = (reg_val_high << 8) | reg_val_low; + /* Read twice to clear */ + adp5520_read(dev->master, KR_INT_STAT_1, ®_val_low); + adp5520_read(dev->master, KR_INT_STAT_2, ®_val_high); + keymask |= (reg_val_high << 8) | reg_val_low; + adp5520_keys_report_event(dev, keymask, 0); + } + + return 0; +} + +static int __devinit adp5520_keys_probe(struct platform_device *pdev) +{ + struct adp5520_keys_platfrom_data *pdata = pdev->dev.platform_data; + struct input_dev *input; + struct adp5520_keys *dev; + int ret, i; + unsigned char en_mask, ctl_mask = 0; + + if (pdev->id != ID_ADP5520) { + dev_err(&pdev->dev, "only ADP5520 supports Keypad\n"); + return -EFAULT; + } + + if (pdata == NULL) { + dev_err(&pdev->dev, "missing platform data\n"); + return -ENODEV; + } + + if (!(pdata->rows_en_mask && pdata->cols_en_mask)) + return -ENODEV; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (dev == NULL) { + dev_err(&pdev->dev, "failed to alloc memory\n"); + return -ENOMEM; + } + + input = input_allocate_device(); + if (!input) { + ret = -ENOMEM; + goto err; + } + + dev->master = pdev->dev.parent; + dev->input = input; + + input->name = pdev->name; + input->phys = "adp5520-keys/input0"; + input->dev.parent = &pdev->dev; + + input_set_drvdata(input, dev); + + input->id.bustype = BUS_I2C; + input->id.vendor = 0x0001; + input->id.product = 0x5520; + input->id.version = 0x0001; + + input->keycodesize = sizeof(unsigned short); + input->keycodemax = pdata->keymapsize; + input->keycode = dev->keycode; + + memcpy(dev->keycode, pdata->keymap, + pdata->keymapsize * input->keycodesize); + + /* setup input device */ + __set_bit(EV_KEY, input->evbit); + + if (pdata->repeat) + __set_bit(EV_REP, input->evbit); + + for (i = 0; i < input->keycodemax; i++) + __set_bit(dev->keycode[i] & KEY_MAX, input->keybit); + __clear_bit(KEY_RESERVED, input->keybit); + + ret = input_register_device(input); + if (ret) { + dev_err(&pdev->dev, "unable to register input device\n"); + input_free_device(input); + goto err; + } + + en_mask = pdata->rows_en_mask | pdata->cols_en_mask; + + ret = adp5520_set_bits(dev->master, GPIO_CFG_1, en_mask); + + if (en_mask & COL_C3) + ctl_mask |= C3_MODE; + + if (en_mask & ROW_R3) + ctl_mask |= R3_MODE; + + if (ctl_mask) + ret |= adp5520_set_bits(dev->master, LED_CONTROL, + ctl_mask); + + ret |= adp5520_set_bits(dev->master, GPIO_PULLUP, + pdata->rows_en_mask); + + if (ret) { + dev_err(&pdev->dev, "failed to write\n"); + goto err1; + } + + dev->notifier.notifier_call = adp5520_keys_notifier; + ret = adp5520_register_notifier(dev->master, &dev->notifier, + KP_IEN | KR_IEN); + if (ret) { + dev_err(&pdev->dev, "failed to register notifier\n"); + goto err1; + } + + platform_set_drvdata(pdev, dev); + return 0; + +err1: + input_unregister_device(input); +err: + kfree(dev); + return ret; +} + +static int __devexit adp5520_keys_remove(struct platform_device *pdev) +{ + struct adp5520_keys *dev; + dev = platform_get_drvdata(pdev); + + adp5520_unregister_notifier(dev->master, &dev->notifier, + KP_IEN | KR_IEN); + + input_unregister_device(dev->input); + kfree(dev); + return 0; +} + +static struct platform_driver adp5520_keys_driver = { + .driver = { + .name = "adp5520-keys", + .owner = THIS_MODULE, + }, + .probe = adp5520_keys_probe, + .remove = __devexit_p(adp5520_keys_remove), +}; + +static int __init adp5520_keys_init(void) +{ + return platform_driver_register(&adp5520_keys_driver); +} +module_init(adp5520_keys_init); + +static void __exit adp5520_keys_exit(void) +{ + platform_driver_unregister(&adp5520_keys_driver); +} +module_exit(adp5520_keys_exit); + +MODULE_AUTHOR("Michael Hennerich "); +MODULE_DESCRIPTION("Keys ADP5520 Driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:adp5520-keys");