From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932570AbbJaAmt (ORCPT ); Fri, 30 Oct 2015 20:42:49 -0400 Received: from mail-ig0-f176.google.com ([209.85.213.176]:37981 "EHLO mail-ig0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753962AbbJaAlz (ORCPT ); Fri, 30 Oct 2015 20:41:55 -0400 From: Michael Welling To: Dmitry Torokhov , kbuild test robot , kbuild-all@01.org, Tony Lindgren , Pavel Machek , Felipe Balbi , Sebastian Reichel , Roger Quadros , Arnd Bergmann , Mark Brown , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org Cc: Michael Welling Subject: [PATCH 3/4] Input: tsc2004 - Add support for tsc2004 Date: Fri, 30 Oct 2015 19:41:25 -0500 Message-Id: <1446252086-24334-4-git-send-email-mwelling@ieee.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1446252086-24334-1-git-send-email-mwelling@ieee.org> References: <1446252086-24334-1-git-send-email-mwelling@ieee.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adds support for the i2c based tsc2004. Signed-off-by: Michael Welling --- drivers/input/touchscreen/Kconfig | 13 ++++++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/tsc2004.c | 86 +++++++++++++++++++++++++++++++++++++ 3 files changed, 100 insertions(+) create mode 100644 drivers/input/touchscreen/tsc2004.c diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 6a5878b..ae33da7 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -942,6 +942,19 @@ config TOUCHSCREEN_TSC_SERIO config TOUCHSCREEN_TSC200X_CORE tristate +config TOUCHSCREEN_TSC2004 + tristate "TSC2004 based touchscreens" + depends on I2C + select REGMAP_I2C + select TOUCHSCREEN_TSC200X_CORE + help + Say Y here if you have a TSC2004 based touchscreen. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called tsc2004. + config TOUCHSCREEN_TSC2005 tristate "TSC2005 based touchscreens" depends on SPI_MASTER diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 03179f2..cbaa6ab 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o obj-$(CONFIG_TOUCHSCREEN_TSC_SERIO) += tsc40.o obj-$(CONFIG_TOUCHSCREEN_TSC200X_CORE) += tsc200x-core.o +obj-$(CONFIG_TOUCHSCREEN_TSC2004) += tsc2004.o obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o diff --git a/drivers/input/touchscreen/tsc2004.c b/drivers/input/touchscreen/tsc2004.c new file mode 100644 index 0000000..d2f7a6b --- /dev/null +++ b/drivers/input/touchscreen/tsc2004.c @@ -0,0 +1,86 @@ +/* + * TSC2004 touchscreen driver + * + * Copyright (C) 2015 QWERTY Embedded Design + * Copyright (C) 2015 EMAC Inc. + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include "tsc200x-core.h" + +static int tsc2004_cmd(struct device *dev, u8 cmd) +{ + u8 tx = TSC200X_CMD | TSC200X_CMD_12BIT | cmd; + s32 data; + struct i2c_client *i2c = to_i2c_client(dev); + + data = i2c_smbus_write_byte(i2c, tx); + if (data < 0) { + dev_err(dev, "%s: failed, command: %x i2c error: %d\n", + __func__, cmd, data); + return data; + } + + return 0; +} + +static int tsc2004_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) + +{ + return tsc200x_probe(&i2c->dev, i2c->irq, BUS_I2C, + devm_regmap_init_i2c(i2c, &tsc200x_regmap_config), + &tsc2004_cmd); +} + +static int tsc2004_remove(struct i2c_client *i2c) +{ + return tsc200x_remove(&i2c->dev); +} + +static const struct i2c_device_id tsc2004_idtable[] = { + { "tsc2004", 0 }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, tsc2004_idtable); + +#ifdef CONFIG_OF +static const struct of_device_id tsc2004_of_match[] = { + { .compatible = "ti,tsc2004" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, tsc2004_of_match); +#endif + +static struct i2c_driver tsc2004_driver = { + .driver = { + .name = "tsc2004", + .of_match_table = of_match_ptr(tsc2004_of_match), + .pm = &tsc200x_pm_ops, + }, + .id_table = tsc2004_idtable, + .probe = tsc2004_probe, + .remove = tsc2004_remove, +}; + +module_i2c_driver(tsc2004_driver); + +MODULE_AUTHOR("Michael Welling "); +MODULE_DESCRIPTION("TSC2004 Touchscreen Driver"); +MODULE_LICENSE("GPL"); -- 2.1.4