From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752311Ab2CMMfT (ORCPT ); Tue, 13 Mar 2012 08:35:19 -0400 Received: from db3ehsobe002.messaging.microsoft.com ([213.199.154.140]:20876 "EHLO db3outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752050Ab2CMMfR (ORCPT ); Tue, 13 Mar 2012 08:35:17 -0400 X-SpamScore: -9 X-BigFish: VPS-9(zz936eK1432N98dKc8kzz1202hzz8275bhz2dh2a8h668h839h93fh) X-Forefront-Antispam-Report: CIP:59.163.77.45;KIP:(null);UIP:(null);IPV:NLI;H:Outbound.kpitcummins.com;RD:59.163.77.45.static.vsnl.net.in;EFVD:NLI Subject: Re: [Patch 07/07] Touch: DA9052/53 touch screen driver v1 From: Ashish Jangam To: CC: , , , , , Mark Brown , David Dajun Chen In-Reply-To: <1328532695.30549.86.camel@dhruva> References: <1328532695.30549.86.camel@dhruva> Content-Type: text/plain; charset="UTF-8" Date: Tue, 13 Mar 2012 17:55:06 +0530 Message-ID: <1331641506.7058.0.camel@dhruva> MIME-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.10.38.47] X-OriginatorOrg: kpitcummins.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Any update on the below patch On Mon, 2012-02-06 at 18:21 +0530, Ashish Jangam wrote: > This driver adds support for DA9052/53 4-wire resistive ADC interfaced > touchscreen controller. > > DA9052/53 is a MFD therefore this driver depends on DA9052/53 core > driver for core functionalities. > > This patch is functionally tested on Samsung SMDKV6410. > > Signed-off-by: David Dajun Chen > Signed-off-by: Ashish Jangam > --- > drivers/input/touchscreen/Kconfig | 7 + > drivers/input/touchscreen/Makefile | 1 + > drivers/input/touchscreen/da9052_tsi.c | 353 ++++++++++++++++++++++++++++++++ > 3 files changed, 361 insertions(+), 0 deletions(-) > create mode 100644 drivers/input/touchscreen/da9052_tsi.c > diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig > index 2b21a70..32a3e26 100644 > --- a/drivers/input/touchscreen/Kconfig > +++ b/drivers/input/touchscreen/Kconfig > @@ -187,6 +187,13 @@ config TOUCHSCREEN_DA9034 > Say Y here to enable the support for the touchscreen found > on Dialog Semiconductor DA9034 PMIC. > > +config TOUCHSCREEN_DA9052 > + tristate "Dialog DA9052/DA9053 TSI" > + depends on PMIC_DA9052 > + help > + Say y here to support the touchscreen found on Dialog Semiconductor > + DA9052-BC and DA9053-AA/Bx PMICs. > + > config TOUCHSCREEN_DYNAPRO > tristate "Dynapro serial touchscreen" > select SERIO > diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile > index d9acbdc..c76b21c 100644 > --- a/drivers/input/touchscreen/Makefile > +++ b/drivers/input/touchscreen/Makefile > @@ -22,6 +22,7 @@ obj-$(CONFIG_TOUCHSCREEN_CYTTSP_CORE) += cyttsp_core.o > obj-$(CONFIG_TOUCHSCREEN_CYTTSP_I2C) += cyttsp_i2c.o > obj-$(CONFIG_TOUCHSCREEN_CYTTSP_SPI) += cyttsp_spi.o > obj-$(CONFIG_TOUCHSCREEN_DA9034) += da9034-ts.o > +obj-$(CONFIG_TOUCHSCREEN_DA9052) += da9052_tsi.o > obj-$(CONFIG_TOUCHSCREEN_DYNAPRO) += dynapro.o > obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o > obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o > diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c > new file mode 100644 > index 0000000..8c672ee > --- /dev/null > +++ b/drivers/input/touchscreen/da9052_tsi.c > @@ -0,0 +1,353 @@ > +/* > + * TSI driver for Dialog DA9052 > + * > + * Copyright(c) 2012 Dialog Semiconductor Ltd. > + * > + * Author: David Dajun Chen > + * > + * 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. > + * > + */ > +#include > +#include > +#include > +#include > +#include > + > +#include > +#include > + > +#define TSI_PEN_DOWN_STATUS 0x40 > + > +struct da9052_tsi { > + struct da9052 *da9052; > + struct input_dev *dev; > + struct delayed_work ts_pen_work; > + int irq_pendwn; > + int irq_datardy; > +}; > + > +static int da9052_ts_start(struct da9052_tsi *tsi) > +{ > + return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, > + 1 << 0, 1 << 0); > +} > + > +static int da9052_ts_stop(struct da9052_tsi *tsi) > +{ > + return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 1 << 0, 0); > +} > + > +static irqreturn_t da9052_ts_pendwn_irq(int irq, void *data) > +{ > + struct da9052_tsi *tsi = data; > + > + /* Mask PEN_DOWN event and unmask TSI_READY event */ > + disable_irq_nosync(tsi->irq_pendwn); > + enable_irq(tsi->irq_datardy); > + > + da9052_ts_start(tsi); > + > + input_report_key(tsi->dev, BTN_TOUCH, 1); > + input_sync(tsi->dev); > + > + schedule_delayed_work(&tsi->ts_pen_work, HZ/50); > + > + return IRQ_HANDLED; > +} > + > +static int da9052_ts_read(struct da9052_tsi *tsi) > +{ > + int ret = 0; > + u16 x, y, z; > + u8 v; > + > + ret = da9052_reg_read(tsi->da9052, DA9052_TSI_X_MSB_REG); > + if (ret < 0) > + goto exit; > + > + x = (u16) ret; > + > + ret = da9052_reg_read(tsi->da9052, DA9052_TSI_Y_MSB_REG); > + if (ret < 0) > + goto exit; > + > + y = (u16) ret; > + > + ret = da9052_reg_read(tsi->da9052, DA9052_TSI_Z_MSB_REG); > + if (ret < 0) > + goto exit; > + > + z = (u16) ret; > + > + ret = da9052_reg_read(tsi->da9052, DA9052_TSI_LSB_REG); > + if (ret < 0) > + goto exit; > + > + v = (u8) ret; > + > + x = ((x << 2) & 0x3fc) | (v & 0x3); > + y = ((y << 2) & 0x3fc) | ((v & 0xc) >> 2); > + z = ((z << 2) & 0x3fc) | ((v & 0x30) >> 4); > + > + input_report_abs(tsi->dev, ABS_X, x); > + input_report_abs(tsi->dev, ABS_Y, y); > + input_report_abs(tsi->dev, ABS_PRESSURE, z); > + input_report_key(tsi->dev, BTN_TOUCH, 1); > + input_sync(tsi->dev); > + > +exit: > + return ret; > +} > + > +static irqreturn_t da9052_ts_datardy_irq(int irq, void *data) > +{ > + struct da9052_tsi *tsi = data; > + > + da9052_ts_read(tsi); > + return IRQ_HANDLED; > +} > + > +static void da9052_ts_pen_work(struct work_struct *work) > +{ > + struct da9052_tsi *tsi = container_of(work, struct da9052_tsi, > + ts_pen_work.work); > + struct input_dev *ip_dev = tsi->dev; > + int ret; > + > + ret = da9052_reg_read(tsi->da9052, DA9052_TSI_LSB_REG); > + if (ret < 0) > + return; > + > + if (ret & TSI_PEN_DOWN_STATUS) /* Pen Down */ > + schedule_delayed_work(&tsi->ts_pen_work, HZ/50); > + else { > + /* Pen UP */ > + da9052_ts_stop(tsi); > + > + /* Mask TSI_READY event and unmask PEN_DOWN event */ > + disable_irq(tsi->irq_datardy); > + enable_irq(tsi->irq_pendwn); > + > + /* Report Pen UP */ > + input_report_abs(ip_dev, ABS_PRESSURE, 0); > + input_report_key(ip_dev, BTN_TOUCH, 0); > + input_sync(ip_dev); > + } > +} > + > +static int __devinit da9052_ts_configure_gpio(struct da9052 *da9052) > +{ > + int ret; > + > + ret = da9052_reg_update(da9052, DA9052_GPIO_2_3_REG, 0x30, 0); > + if (ret < 0) > + return ret; > + > + ret = da9052_reg_update(da9052, DA9052_GPIO_4_5_REG, 0x33, 0); > + if (ret < 0) > + return ret; > + > + ret = da9052_reg_update(da9052, DA9052_GPIO_6_7_REG, 0x33, 0); > + > + return ret; > +} > + > +static int __devinit da9052_configure_tsi(struct da9052_tsi *tsi) > +{ > + ssize_t ret; > + > + ret = da9052_ts_configure_gpio(tsi->da9052); > + if (ret < 0) > + return ret; > + > + /* Measure TSI sample every 1ms */ > + ret = da9052_reg_update(tsi->da9052, DA9052_ADC_CONT_REG, > + 1 << 6, 1 << 6); > + if (ret < 0) > + return ret; > + > + /* TSI_DELAY: 3 slots, TSI_SKIP: 0 slots, TSI_MODE: XYZP */ > + ret = da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 0xFC, 0xC0); > + if (ret < 0) > + return ret; > + > + /* Mask PEN_DOWN and TSI_READY events */ > + disable_irq(tsi->irq_pendwn); > + disable_irq(tsi->irq_datardy); > + > + /*Supply TSIRef through LD09 */ > + ret = da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x59); > + > + return ret; > +} > + > +static int da9052_ts_input_open(struct input_dev *input_dev) > +{ > + struct da9052_tsi *tsi = input_get_drvdata(input_dev); > + > + /* Unmask PEN_DOWN event */ > + enable_irq(tsi->irq_pendwn); > + > + /* Enable Pen Detect Circuit */ > + return da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, > + 1 << 1, 1 << 1); > +} > + > +static void da9052_ts_input_close(struct input_dev *input_dev) > +{ > + struct da9052_tsi *tsi = input_get_drvdata(input_dev); > + int ret; > + > + ret = da9052_reg_read(tsi->da9052, DA9052_TSI_LSB_REG); > + > + if (ret & TSI_PEN_DOWN_STATUS) /* Pen Down */ > + disable_irq(tsi->irq_datardy); > + else > + disable_irq(tsi->irq_pendwn); > + > + cancel_delayed_work_sync(&tsi->ts_pen_work); > + > + da9052_ts_stop(tsi); > + > + /* Disable Pen Detect Circuit */ > + da9052_reg_update(tsi->da9052, DA9052_TSI_CONT_A_REG, 1 << 1, 0); > +} > + > +static int __devinit da9052_ts_probe(struct platform_device *pdev) > +{ > + struct da9052_tsi *tsi; > + struct input_dev *input_dev; > + struct da9052 *da9052; > + int ret; > + > + da9052 = dev_get_drvdata(pdev->dev.parent); > + if (da9052 == NULL) > + return -EINVAL; > + > + tsi = devm_kzalloc(&pdev->dev, sizeof(struct da9052_tsi), GFP_KERNEL); > + if (!tsi) > + return -ENOMEM; > + > + input_dev = input_allocate_device(); > + if (!input_dev) { > + dev_err(tsi->da9052->dev, "Failed to allocate input device\n"); > + ret = -ENOMEM; > + goto err_mem; > + } > + > + INIT_DELAYED_WORK(&tsi->ts_pen_work, da9052_ts_pen_work); > + > + tsi->da9052 = da9052; > + > + input_dev->id.version = 0x0101; > + input_dev->id.vendor = 0x15B6; > + input_dev->id.product = 0x9052; > + input_dev->name = "Dialog DA9052 TouchScreen Driver"; > + input_dev->dev.parent = &pdev->dev; > + input_dev->open = da9052_ts_input_open; > + input_dev->close = da9052_ts_input_close; > + __set_bit(EV_ABS, input_dev->evbit); > + __set_bit(EV_KEY, input_dev->evbit); > + __set_bit(BTN_TOUCH, input_dev->keybit); > + > + input_set_abs_params(input_dev, ABS_X, 0, 1023, 0, 0); > + input_set_abs_params(input_dev, ABS_Y, 0, 1023, 0, 0); > + input_set_abs_params(input_dev, ABS_PRESSURE, 0, 1023, 0, 0); > + > + tsi->dev = input_dev; > + input_set_drvdata(input_dev, tsi); > + > + tsi->irq_pendwn = platform_get_irq_byname(pdev, "PENDWN"); > + if (tsi->irq_pendwn < 0) { > + ret = tsi->irq_pendwn; > + goto err_input; > + } > + > + ret = request_threaded_irq(tsi->irq_pendwn, NULL, da9052_ts_pendwn_irq, > + IRQF_TRIGGER_LOW | IRQF_ONESHOT, > + "PENDWN", tsi); > + if (ret < 0) { > + dev_err(tsi->da9052->dev, > + "Failed to register %s IRQ %d, error = %d\n", "PENDWN", > + tsi->irq_pendwn, ret); > + goto err_input; > + } > + > + tsi->irq_datardy = platform_get_irq_byname(pdev, "TSIRDY"); > + if (tsi->irq_datardy < 0) { > + ret = tsi->irq_datardy; > + goto err_pendwn_irq; > + } > + > + ret = request_threaded_irq(tsi->irq_datardy, NULL, > + da9052_ts_datardy_irq, > + IRQF_TRIGGER_LOW | IRQF_ONESHOT, > + "TSIRDY", tsi); > + if (ret < 0) { > + dev_err(tsi->da9052->dev, > + "Failed to register %s IRQ %d, error = %d\n", "TSIRDY", > + tsi->irq_datardy, ret); > + goto err_pendwn_irq; > + } > + > + ret = da9052_configure_tsi(tsi); > + if (ret < 0) > + goto err_datardy_irq; > + > + ret = input_register_device(tsi->dev); > + if (ret < 0) > + goto err_datardy_irq; > + > + platform_set_drvdata(pdev, tsi); > + > + return 0; > + > +err_datardy_irq: > + free_irq(tsi->irq_datardy, tsi); > +err_pendwn_irq: > + free_irq(tsi->irq_pendwn, tsi); > +err_input: > + input_free_device(input_dev); > +err_mem: > + devm_kfree(&pdev->dev, tsi); > + return ret; > +} > + > +static int __devexit da9052_ts_remove(struct platform_device *pdev) > +{ > + struct da9052_tsi *tsi = platform_get_drvdata(pdev); > + > + da9052_reg_write(tsi->da9052, DA9052_LDO9_REG, 0x19); > + > + free_irq(tsi->irq_pendwn, tsi); > + free_irq(tsi->irq_datardy, tsi); > + > + input_unregister_device(tsi->dev); > + > + platform_set_drvdata(pdev, NULL); > + > + devm_kfree(&pdev->dev, tsi); > + > + return 0; > +} > + > +static struct platform_driver da9052_tsi_driver = { > + > + .probe = da9052_ts_probe, > + .remove = __devexit_p(da9052_ts_remove), > + .driver = { > + .name = "da9052-tsi", > + .owner = THIS_MODULE, > + }, > +}; > + > +module_platform_driver(da9052_tsi_driver); > + > +MODULE_DESCRIPTION("Touchscreen driver for Dialog Semiconductor DA9052"); > +MODULE_AUTHOR("David Dajun Chen "); > +MODULE_LICENSE("GPL"); > +MODULE_ALIAS("platform:da9052-tsi"); > >