Re: [Patch 07/07] Touch: DA9052/53 touch screen driver v1

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 dchen@diasemi.com Signed-off-by: Ashish Jangam ashish.jangam@kpitcummins.com

---

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 dchen@diasemi.com
• • 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 <linux/module.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h>

+#include <linux/mfd/da9052/reg.h> +#include <linux/mfd/da9052/da9052.h>

+#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 dchen@diasemi.com"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:da9052-tsi");