diff options
Diffstat (limited to 'drivers/input/touchscreen')
29 files changed, 339 insertions, 786 deletions
diff --git a/drivers/input/touchscreen/88pm860x-ts.c b/drivers/input/touchscreen/88pm860x-ts.c index 251ff2aa0633..7ed828a51f4c 100644 --- a/drivers/input/touchscreen/88pm860x-ts.c +++ b/drivers/input/touchscreen/88pm860x-ts.c @@ -240,8 +240,6 @@ static int pm860x_touch_probe(struct platform_device *pdev) if (!touch) return -ENOMEM; - platform_set_drvdata(pdev, touch); - touch->idev = devm_input_allocate_device(&pdev->dev); if (!touch->idev) { dev_err(&pdev->dev, "Failed to allocate input device!\n"); @@ -285,7 +283,6 @@ static int pm860x_touch_probe(struct platform_device *pdev) return ret; } - platform_set_drvdata(pdev, touch); return 0; } diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index efca0133e266..033599777651 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -546,18 +546,6 @@ config TOUCHSCREEN_INEXIO To compile this driver as a module, choose M here: the module will be called inexio. -config TOUCHSCREEN_INTEL_MID - tristate "Intel MID platform resistive touchscreen" - depends on INTEL_SCU_IPC - help - Say Y here if you have a Intel MID based touchscreen in - your system. - - If unsure, say N. - - To compile this driver as a module, choose M here: the - module will be called intel_mid_touch. - config TOUCHSCREEN_MK712 tristate "ICS MicroClock MK712 touchscreen" help @@ -1177,6 +1165,17 @@ config TOUCHSCREEN_TPS6507X To compile this driver as a module, choose M here: the module will be called tps6507x_ts. +config TOUCHSCREEN_ZET6223 + tristate "Zeitec ZET6223 touchscreen driver" + depends on I2C + help + Say Y here if you have a touchscreen using Zeitec ZET6223 + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called zet6223. + config TOUCHSCREEN_ZFORCE tristate "Neonode zForce infrared touchscreens" depends on I2C diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 81b86451782d..b622e5344137 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -42,7 +42,6 @@ obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix.o obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o obj-$(CONFIG_TOUCHSCREEN_IMX6UL_TSC) += imx6ul_tsc.o obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o -obj-$(CONFIG_TOUCHSCREEN_INTEL_MID) += intel-mid-touch.o obj-$(CONFIG_TOUCHSCREEN_IPROC) += bcm_iproc_tsc.o obj-$(CONFIG_TOUCHSCREEN_LPC32XX) += lpc32xx_ts.o obj-$(CONFIG_TOUCHSCREEN_MAX11801) += max11801_ts.o @@ -96,6 +95,7 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o obj-$(CONFIG_TOUCHSCREEN_SX8654) += sx8654.o obj-$(CONFIG_TOUCHSCREEN_TPS6507X) += tps6507x-ts.o +obj-$(CONFIG_TOUCHSCREEN_ZET6223) += zet6223.o obj-$(CONFIG_TOUCHSCREEN_ZFORCE) += zforce_ts.o obj-$(CONFIG_TOUCHSCREEN_COLIBRI_VF50) += colibri-vf50-ts.o obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023) += rohm_bu21023.o diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 1ce3ecbe37f8..f5793e3d945f 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -1462,8 +1462,6 @@ static int ads7846_remove(struct spi_device *spi) { struct ads7846 *ts = spi_get_drvdata(spi); - device_init_wakeup(&spi->dev, false); - sysfs_remove_group(&spi->dev.kobj, &ads784x_attr_group); ads7846_disable(ts); diff --git a/drivers/input/touchscreen/ar1021_i2c.c b/drivers/input/touchscreen/ar1021_i2c.c index 71b5a634cf6d..6562b17117f7 100644 --- a/drivers/input/touchscreen/ar1021_i2c.c +++ b/drivers/input/touchscreen/ar1021_i2c.c @@ -127,7 +127,6 @@ static int ar1021_i2c_probe(struct i2c_client *client, return error; } - i2c_set_clientdata(client, ar1021); return 0; } diff --git a/drivers/input/touchscreen/atmel-wm97xx.c b/drivers/input/touchscreen/atmel-wm97xx.c index 7ec0421c0dd8..8cf0b2be2df4 100644 --- a/drivers/input/touchscreen/atmel-wm97xx.c +++ b/drivers/input/touchscreen/atmel-wm97xx.c @@ -339,10 +339,8 @@ static int __init atmel_wm97xx_probe(struct platform_device *pdev) int ret; atmel_wm97xx = kzalloc(sizeof(struct atmel_wm97xx), GFP_KERNEL); - if (!atmel_wm97xx) { - dev_dbg(&pdev->dev, "out of memory\n"); + if (!atmel_wm97xx) return -ENOMEM; - } atmel_wm97xx->wm = wm; atmel_wm97xx->regs = (void *)ATMEL_WM97XX_AC97C_IOMEM; diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index e5d185fe69b9..2302aef2b2d4 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -2509,7 +2509,7 @@ static void mxt_debug_init(struct mxt_data *data) dbg->t37_pages = MXT1386_COLUMNS * MXT1386_PAGES_PER_COLUMN; else dbg->t37_pages = DIV_ROUND_UP(data->xsize * - data->info.matrix_ysize * + info->matrix_ysize * sizeof(u16), sizeof(dbg->t37_buf->data)); diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c index 931417eb4f5a..4fa5da8d5fa8 100644 --- a/drivers/input/touchscreen/bu21013_ts.c +++ b/drivers/input/touchscreen/bu21013_ts.c @@ -637,8 +637,6 @@ static int bu21013_remove(struct i2c_client *client) kfree(bu21013_data); - device_init_wakeup(&client->dev, false); - return 0; } diff --git a/drivers/input/touchscreen/colibri-vf50-ts.c b/drivers/input/touchscreen/colibri-vf50-ts.c index 69828d015d45..69c08acae264 100644 --- a/drivers/input/touchscreen/colibri-vf50-ts.c +++ b/drivers/input/touchscreen/colibri-vf50-ts.c @@ -311,8 +311,6 @@ static int vf50_ts_probe(struct platform_device *pdev) return -ENOMEM; } - platform_set_drvdata(pdev, touchdev); - input->name = DRIVER_NAME; input->id.bustype = BUS_HOST; input->dev.parent = dev; diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 28466e358fee..8cf8d8d5d4ef 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -67,7 +67,7 @@ #define EDT_SWITCH_MODE_RETRIES 10 #define EDT_SWITCH_MODE_DELAY 5 /* msec */ #define EDT_RAW_DATA_RETRIES 100 -#define EDT_RAW_DATA_DELAY 1 /* msec */ +#define EDT_RAW_DATA_DELAY 1000 /* usec */ enum edt_ver { M06, @@ -664,7 +664,7 @@ static ssize_t edt_ft5x06_debugfs_raw_data_read(struct file *file, } do { - msleep(EDT_RAW_DATA_DELAY); + usleep_range(EDT_RAW_DATA_DELAY, EDT_RAW_DATA_DELAY + 100); val = edt_ft5x06_register_read(tsdata, 0x08); if (val < 1) break; @@ -982,7 +982,6 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, return error; } - input_set_drvdata(input, tsdata); i2c_set_clientdata(client, tsdata); irq_flags = irq_get_trigger_type(client->irq); diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c index 09be6ced7151..16023867b9da 100644 --- a/drivers/input/touchscreen/eeti_ts.c +++ b/drivers/input/touchscreen/eeti_ts.c @@ -173,12 +173,11 @@ static int eeti_ts_probe(struct i2c_client *client, priv = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) { dev_err(&client->dev, "failed to allocate driver data\n"); - goto err0; + return -ENOMEM; } mutex_init(&priv->mutex); input = input_allocate_device(); - if (!input) { dev_err(&client->dev, "Failed to allocate input device.\n"); goto err1; @@ -232,7 +231,6 @@ static int eeti_ts_probe(struct i2c_client *client, */ eeti_ts_stop(priv); - device_init_wakeup(&client->dev, 0); return 0; err3: @@ -243,7 +241,6 @@ err2: err1: input_free_device(input); kfree(priv); -err0: return err; } diff --git a/drivers/input/touchscreen/egalax_ts.c b/drivers/input/touchscreen/egalax_ts.c index 1afc08b08155..752ae9cf4514 100644 --- a/drivers/input/touchscreen/egalax_ts.c +++ b/drivers/input/touchscreen/egalax_ts.c @@ -214,8 +214,6 @@ static int egalax_ts_probe(struct i2c_client *client, ABS_MT_POSITION_Y, 0, EGALAX_MAX_Y, 0, 0); input_mt_init_slots(input_dev, MAX_SUPPORT_POINTS, 0); - input_set_drvdata(input_dev, ts); - error = devm_request_threaded_irq(&client->dev, client->irq, NULL, egalax_ts_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT, @@ -229,7 +227,6 @@ static int egalax_ts_probe(struct i2c_client *client, if (error) return error; - i2c_set_clientdata(client, ts); return 0; } diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index 3e6003d32e56..872750eeca93 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -1260,8 +1260,6 @@ static int elants_i2c_probe(struct i2c_client *client, input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res); input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res); - input_set_drvdata(ts->input, ts); - error = input_register_device(ts->input); if (error) { dev_err(&client->dev, diff --git a/drivers/input/touchscreen/fsl-imx25-tcq.c b/drivers/input/touchscreen/fsl-imx25-tcq.c index d50ee490c9cc..47fe1f184bbc 100644 --- a/drivers/input/touchscreen/fsl-imx25-tcq.c +++ b/drivers/input/touchscreen/fsl-imx25-tcq.c @@ -507,7 +507,7 @@ static int mx25_tcq_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct input_dev *idev; struct mx25_tcq_priv *priv; - struct mx25_tsadc *tsadc = dev_get_drvdata(pdev->dev.parent); + struct mx25_tsadc *tsadc = dev_get_drvdata(dev->parent); struct resource *res; void __iomem *mem; int error; diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index fe4848bd1f4c..6f76eeedf465 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -256,7 +256,6 @@ static int ili210x_i2c_probe(struct i2c_client *client, input_set_abs_params(input, ABS_MT_POSITION_X, 0, xmax, 0, 0); input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ymax, 0, 0); - input_set_drvdata(input, priv); i2c_set_clientdata(client, priv); error = request_irq(client->irq, ili210x_irq, pdata->irq_flags, @@ -280,7 +279,7 @@ static int ili210x_i2c_probe(struct i2c_client *client, goto err_remove_sysfs; } - device_init_wakeup(&client->dev, 1); + device_init_wakeup(dev, 1); dev_dbg(dev, "ILI210x initialized (IRQ: %d), firmware version %d.%d.%d", diff --git a/drivers/input/touchscreen/intel-mid-touch.c b/drivers/input/touchscreen/intel-mid-touch.c deleted file mode 100644 index b4f0725a1c3d..000000000000 --- a/drivers/input/touchscreen/intel-mid-touch.c +++ /dev/null @@ -1,654 +0,0 @@ -/* - * Intel MID Resistive Touch Screen Driver - * - * Copyright (C) 2008 Intel Corp - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * 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; version 2 of the License. - * - * 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. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. - * - * Questions/Comments/Bug fixes to Sreedhara (sreedhara.ds@intel.com) - * Ramesh Agarwal (ramesh.agarwal@intel.com) - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * TODO: - * review conversion of r/m/w sequences - */ - -#include <linux/module.h> -#include <linux/input.h> -#include <linux/interrupt.h> -#include <linux/err.h> -#include <linux/param.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <linux/irq.h> -#include <linux/delay.h> -#include <asm/intel_scu_ipc.h> -#include <linux/device.h> - -/* PMIC Interrupt registers */ -#define PMIC_REG_ID1 0x00 /* PMIC ID1 register */ - -/* PMIC Interrupt registers */ -#define PMIC_REG_INT 0x04 /* PMIC interrupt register */ -#define PMIC_REG_MINT 0x05 /* PMIC interrupt mask register */ - -/* ADC Interrupt registers */ -#define PMIC_REG_ADCINT 0x5F /* ADC interrupt register */ -#define PMIC_REG_MADCINT 0x60 /* ADC interrupt mask register */ - -/* ADC Control registers */ -#define PMIC_REG_ADCCNTL1 0x61 /* ADC control register */ - -/* ADC Channel Selection registers */ -#define PMICADDR0 0xA4 -#define END_OF_CHANNEL 0x1F - -/* ADC Result register */ -#define PMIC_REG_ADCSNS0H 0x64 - -/* ADC channels for touch screen */ -#define MRST_TS_CHAN10 0xA /* Touch screen X+ connection */ -#define MRST_TS_CHAN11 0xB /* Touch screen X- connection */ -#define MRST_TS_CHAN12 0xC /* Touch screen Y+ connection */ -#define MRST_TS_CHAN13 0xD /* Touch screen Y- connection */ - -/* Touch screen channel BIAS constants */ -#define MRST_XBIAS 0x20 -#define MRST_YBIAS 0x40 -#define MRST_ZBIAS 0x80 - -/* Touch screen coordinates */ -#define MRST_X_MIN 10 -#define MRST_X_MAX 1024 -#define MRST_X_FUZZ 5 -#define MRST_Y_MIN 10 -#define MRST_Y_MAX 1024 -#define MRST_Y_FUZZ 5 -#define MRST_PRESSURE_MIN 0 -#define MRST_PRESSURE_NOMINAL 50 -#define MRST_PRESSURE_MAX 100 - -#define WAIT_ADC_COMPLETION 10 /* msec */ - -/* PMIC ADC round robin delays */ -#define ADC_LOOP_DELAY0 0x0 /* Continuous loop */ -#define ADC_LOOP_DELAY1 0x1 /* 4.5 ms approximate */ - -/* PMIC Vendor Identifiers */ -#define PMIC_VENDOR_FS 0 /* PMIC vendor FreeScale */ -#define PMIC_VENDOR_MAXIM 1 /* PMIC vendor MAXIM */ -#define PMIC_VENDOR_NEC 2 /* PMIC vendor NEC */ -#define MRSTOUCH_MAX_CHANNELS 32 /* Maximum ADC channels */ - -/* Touch screen device structure */ -struct mrstouch_dev { - struct device *dev; /* device associated with touch screen */ - struct input_dev *input; - char phys[32]; - u16 asr; /* Address selection register */ - int irq; - unsigned int vendor; /* PMIC vendor */ - unsigned int rev; /* PMIC revision */ - - int (*read_prepare)(struct mrstouch_dev *tsdev); - int (*read)(struct mrstouch_dev *tsdev, u16 *x, u16 *y, u16 *z); - int (*read_finish)(struct mrstouch_dev *tsdev); -}; - - -/*************************** NEC and Maxim Interface ************************/ - -static int mrstouch_nec_adc_read_prepare(struct mrstouch_dev *tsdev) -{ - return intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0, 0x20); -} - -/* - * Enables PENDET interrupt. - */ -static int mrstouch_nec_adc_read_finish(struct mrstouch_dev *tsdev) -{ - int err; - - err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0x20, 0x20); - if (!err) - err = intel_scu_ipc_update_register(PMIC_REG_ADCCNTL1, 0, 0x05); - - return err; -} - -/* - * Reads PMIC ADC touch screen result - * Reads ADC storage registers for higher 7 and lower 3 bits and - * converts the two readings into a single value and turns off gain bit - */ -static int mrstouch_ts_chan_read(u16 offset, u16 chan, u16 *vp, u16 *vm) -{ - int err; - u16 result; - u32 res; - - result = PMIC_REG_ADCSNS0H + offset; - - if (chan == MRST_TS_CHAN12) - result += 4; - - err = intel_scu_ipc_ioread32(result, &res); - if (err) - return err; - - /* Mash the bits up */ - - *vp = (res & 0xFF) << 3; /* Highest 7 bits */ - *vp |= (res >> 8) & 0x07; /* Lower 3 bits */ - *vp &= 0x3FF; - - res >>= 16; - - *vm = (res & 0xFF) << 3; /* Highest 7 bits */ - *vm |= (res >> 8) & 0x07; /* Lower 3 bits */ - *vm &= 0x3FF; - - return 0; -} - -/* - * Enables X, Y and Z bias values - * Enables YPYM for X channels and XPXM for Y channels - */ -static int mrstouch_ts_bias_set(uint offset, uint bias) -{ - int count; - u16 chan, start; - u16 reg[4]; - u8 data[4]; - - chan = PMICADDR0 + offset; - start = MRST_TS_CHAN10; - - for (count = 0; count <= 3; count++) { - reg[count] = chan++; - data[count] = bias | (start + count); - } - - return intel_scu_ipc_writev(reg, data, 4); -} - -/* To read touch screen channel values */ -static int mrstouch_nec_adc_read(struct mrstouch_dev *tsdev, - u16 *x, u16 *y, u16 *z) -{ - int err; - u16 xm, ym, zm; - - /* configure Y bias for X channels */ - err = mrstouch_ts_bias_set(tsdev->asr, MRST_YBIAS); - if (err) - goto ipc_error; - - msleep(WAIT_ADC_COMPLETION); - - /* read x+ and x- channels */ - err = mrstouch_ts_chan_read(tsdev->asr, MRST_TS_CHAN10, x, &xm); - if (err) - goto ipc_error; - - /* configure x bias for y channels */ - err = mrstouch_ts_bias_set(tsdev->asr, MRST_XBIAS); - if (err) - goto ipc_error; - - msleep(WAIT_ADC_COMPLETION); - - /* read y+ and y- channels */ - err = mrstouch_ts_chan_read(tsdev->asr, MRST_TS_CHAN12, y, &ym); - if (err) - goto ipc_error; - - /* configure z bias for x and y channels */ - err = mrstouch_ts_bias_set(tsdev->asr, MRST_ZBIAS); - if (err) - goto ipc_error; - - msleep(WAIT_ADC_COMPLETION); - - /* read z+ and z- channels */ - err = mrstouch_ts_chan_read(tsdev->asr, MRST_TS_CHAN10, z, &zm); - if (err) - goto ipc_error; - - return 0; - -ipc_error: - dev_err(tsdev->dev, "ipc error during adc read\n"); - return err; -} - - -/*************************** Freescale Interface ************************/ - -static int mrstouch_fs_adc_read_prepare(struct mrstouch_dev *tsdev) -{ - int err, count; - u16 chan; - u16 reg[5]; - u8 data[5]; - - /* Stop the ADC */ - err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0x00, 0x02); - if (err) - goto ipc_error; - - chan = PMICADDR0 + tsdev->asr; - - /* Set X BIAS */ - for (count = 0; count <= 3; count++) { - reg[count] = chan++; - data[count] = 0x2A; - } - reg[count] = chan++; /* Dummy */ - data[count] = 0; - - err = intel_scu_ipc_writev(reg, data, 5); - if (err) - goto ipc_error; - - msleep(WAIT_ADC_COMPLETION); - - /* Set Y BIAS */ - for (count = 0; count <= 3; count++) { - reg[count] = chan++; - data[count] = 0x4A; - } - reg[count] = chan++; /* Dummy */ - data[count] = 0; - - err = intel_scu_ipc_writev(reg, data, 5); - if (err) - goto ipc_error; - - msleep(WAIT_ADC_COMPLETION); - - /* Set Z BIAS */ - err = intel_scu_ipc_iowrite32(chan + 2, 0x8A8A8A8A); - if (err) - goto ipc_error; - - msleep(WAIT_ADC_COMPLETION); - - return 0; - -ipc_error: - dev_err(tsdev->dev, "ipc error during %s\n", __func__); - return err; -} - -static int mrstouch_fs_adc_read(struct mrstouch_dev *tsdev, - u16 *x, u16 *y, u16 *z) -{ - int err; - u16 result; - u16 reg[4]; - u8 data[4]; - - result = PMIC_REG_ADCSNS0H + tsdev->asr; - - reg[0] = result + 4; - reg[1] = result + 5; - reg[2] = result + 16; - reg[3] = result + 17; - - err = intel_scu_ipc_readv(reg, data, 4); - if (err) - goto ipc_error; - - *x = data[0] << 3; /* Higher 7 bits */ - *x |= data[1] & 0x7; /* Lower 3 bits */ - *x &= 0x3FF; - - *y = data[2] << 3; /* Higher 7 bits */ - *y |= data[3] & 0x7; /* Lower 3 bits */ - *y &= 0x3FF; - - /* Read Z value */ - reg[0] = result + 28; - reg[1] = result + 29; - - err = intel_scu_ipc_readv(reg, data, 4); - if (err) - goto ipc_error; - - *z = data[0] << 3; /* Higher 7 bits */ - *z |= data[1] & 0x7; /* Lower 3 bits */ - *z &= 0x3FF; - - return 0; - -ipc_error: - dev_err(tsdev->dev, "ipc error during %s\n", __func__); - return err; -} - -static int mrstouch_fs_adc_read_finish(struct mrstouch_dev *tsdev) -{ - int err, count; - u16 chan; - u16 reg[5]; - u8 data[5]; - - /* Clear all TS channels */ - chan = PMICADDR0 + tsdev->asr; - for (count = 0; count <= 4; count++) { - reg[count] = chan++; - data[count] = 0; - } - err = intel_scu_ipc_writev(reg, data, 5); - if (err) - goto ipc_error; - - for (count = 0; count <= 4; count++) { - reg[count] = chan++; - data[count] = 0; - } - err = intel_scu_ipc_writev(reg, data, 5); - if (err) - goto ipc_error; - - err = intel_scu_ipc_iowrite32(chan + 2, 0x00000000); - if (err) - goto ipc_error; - - /* Start ADC */ - err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, 0x02, 0x02); - if (err) - goto ipc_error; - - return 0; - -ipc_error: - dev_err(tsdev->dev, "ipc error during %s\n", __func__); - return err; -} - -static void mrstouch_report_event(struct input_dev *input, - unsigned int x, unsigned int y, unsigned int z) -{ - if (z > MRST_PRESSURE_NOMINAL) { - /* Pen touched, report button touch and coordinates */ - input_report_key(input, BTN_TOUCH, 1); - input_report_abs(input, ABS_X, x); - input_report_abs(input, ABS_Y, y); - } else { - input_report_key(input, BTN_TOUCH, 0); - } - - input_report_abs(input, ABS_PRESSURE, z); - input_sync(input); -} - -/* PENDET interrupt handler */ -static irqreturn_t mrstouch_pendet_irq(int irq, void *dev_id) -{ - struct mrstouch_dev *tsdev = dev_id; - u16 x, y, z; - - /* - * Should we lower thread priority? Probably not, since we are - * not spinning but sleeping... - */ - - if (tsdev->read_prepare(tsdev)) - goto out; - - do { - if (tsdev->read(tsdev, &x, &y, &z)) - break; - - mrstouch_report_event(tsdev->input, x, y, z); - } while (z > MRST_PRESSURE_NOMINAL); - - tsdev->read_finish(tsdev); - -out: - return IRQ_HANDLED; -} - -/* Utility to read PMIC ID */ -static int mrstouch_read_pmic_id(uint *vendor, uint *rev) -{ - int err; - u8 r; - - err = intel_scu_ipc_ioread8(PMIC_REG_ID1, &r); - if (err) - return err; - - *vendor = r & 0x7; - *rev = (r >> 3) & 0x7; - - return 0; -} - -/* - * Parse ADC channels to find end of the channel configured by other ADC user - * NEC and MAXIM requires 4 channels and FreeScale needs 18 channels - */ -static int mrstouch_chan_parse(struct mrstouch_dev *tsdev) -{ - int found = 0; - int err, i; - u8 r8; - - for (i = 0; i < MRSTOUCH_MAX_CHANNELS; i++) { - err = intel_scu_ipc_ioread8(PMICADDR0 + i, &r8); - if (err) - return err; - - if (r8 == END_OF_CHANNEL) { - found = i; - break; - } - } - - if (tsdev->vendor == PMIC_VENDOR_FS) { - if (found > MRSTOUCH_MAX_CHANNELS - 18) - return -ENOSPC; - } else { - if (found > MRSTOUCH_MAX_CHANNELS - 4) - return -ENOSPC; - } - - return found; -} - - -/* - * Writes touch screen channels to ADC address selection registers - */ -static int mrstouch_ts_chan_set(uint offset) -{ - u16 chan; - - int ret, count; - - chan = PMICADDR0 + offset; - for (count = 0; count <= 3; count++) { - ret = intel_scu_ipc_iowrite8(chan++, MRST_TS_CHAN10 + count); - if (ret) - return ret; - } - return intel_scu_ipc_iowrite8(chan++, END_OF_CHANNEL); -} - -/* Initialize ADC */ -static int mrstouch_adc_init(struct mrstouch_dev *tsdev) -{ - int err, start; - u8 ra, rm; - - err = mrstouch_read_pmic_id(&tsdev->vendor, &tsdev->rev); - if (err) { - dev_err(tsdev->dev, "Unable to read PMIC id\n"); - return err; - } - - switch (tsdev->vendor) { - case PMIC_VENDOR_NEC: - case PMIC_VENDOR_MAXIM: - tsdev->read_prepare = mrstouch_nec_adc_read_prepare; - tsdev->read = mrstouch_nec_adc_read; - tsdev->read_finish = mrstouch_nec_adc_read_finish; - break; - - case PMIC_VENDOR_FS: - tsdev->read_prepare = mrstouch_fs_adc_read_prepare; - tsdev->read = mrstouch_fs_adc_read; - tsdev->read_finish = mrstouch_fs_adc_read_finish; - break; - - default: - dev_err(tsdev->dev, - "Unsupported touchscreen: %d\n", tsdev->vendor); - return -ENXIO; - } - - start = mrstouch_chan_parse(tsdev); - if (start < 0) { - dev_err(tsdev->dev, "Unable to parse channels\n"); - return start; - } - - tsdev->asr = start; - - /* - * ADC power on, start, enable PENDET and set loop delay - * ADC loop delay is set to 4.5 ms approximately - * Loop delay more than this results in jitter in adc readings - * Setting loop delay to 0 (continuous loop) in MAXIM stops PENDET - * interrupt generation sometimes. - */ - - if (tsdev->vendor == PMIC_VENDOR_FS) { - ra = 0xE0 | ADC_LOOP_DELAY0; - rm = 0x5; - } else { - /* NEC and MAXIm not consistent with loop delay 0 */ - ra = 0xE0 | ADC_LOOP_DELAY1; - rm = 0x0; - - /* configure touch screen channels */ - err = mrstouch_ts_chan_set(tsdev->asr); - if (err) - return err; - } - - err = intel_scu_ipc_update_register(PMIC_REG_ADCCNTL1, ra, 0xE7); - if (err) - return err; - - err = intel_scu_ipc_update_register(PMIC_REG_MADCINT, rm, 0x03); - if (err) - return err; - - return 0; -} - - -/* Probe function for touch screen driver */ -static int mrstouch_probe(struct platform_device *pdev) -{ - struct mrstouch_dev *tsdev; - struct input_dev *input; - int err; - int irq; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "no interrupt assigned\n"); - return -EINVAL; - } - - tsdev = devm_kzalloc(&pdev->dev, sizeof(struct mrstouch_dev), - GFP_KERNEL); - if (!tsdev) { - dev_err(&pdev->dev, "unable to allocate memory\n"); - return -ENOMEM; - } - - input = devm_input_allocate_device(&pdev->dev); - if (!input) { - dev_err(&pdev->dev, "unable to allocate input device\n"); - return -ENOMEM; - } - - tsdev->dev = &pdev->dev; - tsdev->input = input; - tsdev->irq = irq; - - snprintf(tsdev->phys, sizeof(tsdev->phys), - "%s/input0", dev_name(tsdev->dev)); - - err = mrstouch_adc_init(tsdev); - if (err) { - dev_err(&pdev->dev, "ADC initialization failed\n"); - return err; - } - - input->name = "mrst_touchscreen"; - input->phys = tsdev->phys; - input->dev.parent = tsdev->dev; - - input->id.vendor = tsdev->vendor; - input->id.version = tsdev->rev; - - input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); - input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); - - input_set_abs_params(tsdev->input, ABS_X, - MRST_X_MIN, MRST_X_MAX, MRST_X_FUZZ, 0); - input_set_abs_params(tsdev->input, ABS_Y, - MRST_Y_MIN, MRST_Y_MAX, MRST_Y_FUZZ, 0); - input_set_abs_params(tsdev->input, ABS_PRESSURE, - MRST_PRESSURE_MIN, MRST_PRESSURE_MAX, 0, 0); - - err = devm_request_threaded_irq(&pdev->dev, tsdev->irq, NULL, - mrstouch_pendet_irq, IRQF_ONESHOT, - "mrstouch", tsdev); - if (err) { - dev_err(tsdev->dev, "unable to allocate irq\n"); - return err; - } - - err = input_register_device(tsdev->input); - if (err) { - dev_err(tsdev->dev, "unable to register input device\n"); - return err; - } - - return 0; -} - -static struct platform_driver mrstouch_driver = { - .driver = { - .name = "pmic_touch", - }, - .probe = mrstouch_probe, -}; -module_platform_driver(mrstouch_driver); - -MODULE_AUTHOR("Sreedhara Murthy. D.S, sreedhara.ds@intel.com"); -MODULE_DESCRIPTION("Intel Moorestown Resistive Touch Screen Driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/lpc32xx_ts.c b/drivers/input/touchscreen/lpc32xx_ts.c index 7fbb3b0c8571..e0baa7de4102 100644 --- a/drivers/input/touchscreen/lpc32xx_ts.c +++ b/drivers/input/touchscreen/lpc32xx_ts.c @@ -313,7 +313,6 @@ static int lpc32xx_ts_remove(struct platform_device *pdev) struct lpc32xx_tsc *tsc = platform_get_drvdata(pdev); struct resource *res; - device_init_wakeup(&pdev->dev, 0); free_irq(tsc->irq, tsc); input_unregister_device(tsc->dev); diff --git a/drivers/input/touchscreen/max11801_ts.c b/drivers/input/touchscreen/max11801_ts.c index 82079cde849c..a595ae5284e3 100644 --- a/drivers/input/touchscreen/max11801_ts.c +++ b/drivers/input/touchscreen/max11801_ts.c @@ -199,7 +199,6 @@ static int max11801_ts_probe(struct i2c_client *client, __set_bit(BTN_TOUCH, input_dev->keybit); input_set_abs_params(input_dev, ABS_X, 0, MAX11801_MAX_X, 0, 0); input_set_abs_params(input_dev, ABS_Y, 0, MAX11801_MAX_Y, 0, 0); - input_set_drvdata(input_dev, data); max11801_ts_phy_init(data); @@ -216,7 +215,6 @@ static int max11801_ts_probe(struct i2c_client *client, if (error) return error; - i2c_set_clientdata(client, data); return 0; } diff --git a/drivers/input/touchscreen/mcs5000_ts.c b/drivers/input/touchscreen/mcs5000_ts.c index 8b47e1fecb25..90fc07dc98a6 100644 --- a/drivers/input/touchscreen/mcs5000_ts.c +++ b/drivers/input/touchscreen/mcs5000_ts.c @@ -221,7 +221,6 @@ static int mcs5000_ts_probe(struct i2c_client *client, input_set_abs_params(input_dev, ABS_X, 0, MCS5000_MAX_XC, 0, 0); input_set_abs_params(input_dev, ABS_Y, 0, MCS5000_MAX_YC, 0, 0); - input_set_drvdata(input_dev, data); data->input_dev = input_dev; if (pdata->cfg_pin) diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index 3bb0637d832e..37ff672c7802 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -461,7 +461,7 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, if (error) return error; } else { - dev_err(&client->dev, "platform data not defined\n"); + dev_err(dev, "platform data not defined\n"); return -EINVAL; } @@ -483,7 +483,7 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, input->id.bustype = BUS_I2C; input->open = pixcir_input_open; input->close = pixcir_input_close; - input->dev.parent = &client->dev; + input->dev.parent = dev; if (pdata) { input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0); diff --git a/drivers/input/touchscreen/raydium_i2c_ts.c b/drivers/input/touchscreen/raydium_i2c_ts.c index 2658afa016c9..1252e49ccfa1 100644 --- a/drivers/input/touchscreen/raydium_i2c_ts.c +++ b/drivers/input/touchscreen/raydium_i2c_ts.c @@ -1087,8 +1087,6 @@ static int raydium_i2c_probe(struct i2c_client *client, ts->input->name = "Raydium Touchscreen"; ts->input->id.bustype = BUS_I2C; - input_set_drvdata(ts->input, ts); - input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, le16_to_cpu(ts->info.x_max), 0, 0); input_set_abs_params(ts->input, ABS_MT_POSITION_Y, diff --git a/drivers/input/touchscreen/rohm_bu21023.c b/drivers/input/touchscreen/rohm_bu21023.c index 611156a2ef80..eeaf6ff03597 100644 --- a/drivers/input/touchscreen/rohm_bu21023.c +++ b/drivers/input/touchscreen/rohm_bu21023.c @@ -1189,8 +1189,7 @@ static int rohm_bu21023_i2c_probe(struct i2c_client *client, error = devm_add_action(dev, rohm_ts_remove_sysfs_group, dev); if (error) { rohm_ts_remove_sysfs_group(dev); - dev_err(&client->dev, - "Failed to add sysfs cleanup action: %d\n", + dev_err(dev, "Failed to add sysfs cleanup action: %d\n", error); return error; } diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c index a4a103e1d11b..41d58e88cc8a 100644 --- a/drivers/input/touchscreen/s3c2410_ts.c +++ b/drivers/input/touchscreen/s3c2410_ts.c @@ -250,7 +250,7 @@ static int s3c2410ts_probe(struct platform_device *pdev) ts.dev = dev; - info = dev_get_platdata(&pdev->dev); + info = dev_get_platdata(dev); if (!info) { dev_err(dev, "no platform data, cannot attach\n"); return -EINVAL; diff --git a/drivers/input/touchscreen/sis_i2c.c b/drivers/input/touchscreen/sis_i2c.c index 8d93f8c9a403..67c2563031d6 100644 --- a/drivers/input/touchscreen/sis_i2c.c +++ b/drivers/input/touchscreen/sis_i2c.c @@ -316,7 +316,6 @@ static int sis_ts_probe(struct i2c_client *client, return -ENOMEM; ts->client = client; - i2c_set_clientdata(client, ts); ts->attn_gpio = devm_gpiod_get_optional(&client->dev, "attn", GPIOD_IN); diff --git a/drivers/input/touchscreen/st1232.c b/drivers/input/touchscreen/st1232.c index e943678ce54c..be5615c6bf8f 100644 --- a/drivers/input/touchscreen/st1232.c +++ b/drivers/input/touchscreen/st1232.c @@ -237,7 +237,6 @@ static int st1232_ts_remove(struct i2c_client *client) { struct st1232_ts_data *ts = i2c_get_clientdata(client); - device_init_wakeup(&client->dev, 0); st1232_ts_power(ts, false); return 0; diff --git a/drivers/input/touchscreen/sx8654.c b/drivers/input/touchscreen/sx8654.c index 642f4a53de50..ed29db3ec731 100644 --- a/drivers/input/touchscreen/sx8654.c +++ b/drivers/input/touchscreen/sx8654.c @@ -253,7 +253,6 @@ static int sx8654_probe(struct i2c_client *client, if (error) return error; - i2c_set_clientdata(client, sx8654); return 0; } diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c index f2c5f0e47f77..e02b69f40ad8 100644 --- a/drivers/input/touchscreen/tsc2005.c +++ b/drivers/input/touchscreen/tsc2005.c @@ -18,8 +18,9 @@ * GNU General Public License for more details. */ -#include <linux/module.h> #include <linux/input.h> +#include <linux/module.h> +#include <linux/of.h> #include <linux/spi/spi.h> #include <linux/regmap.h> #include "tsc200x-core.h" @@ -77,9 +78,18 @@ static int tsc2005_remove(struct spi_device *spi) return tsc200x_remove(&spi->dev); } +#ifdef CONFIG_OF +static const struct of_device_id tsc2005_of_match[] = { + { .compatible = "ti,tsc2005" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, tsc2005_of_match); +#endif + static struct spi_driver tsc2005_driver = { .driver = { .name = "tsc2005", + .of_match_table = of_match_ptr(tsc2005_of_match), .pm = &tsc200x_pm_ops, }, .probe = tsc2005_probe, diff --git a/drivers/input/touchscreen/tsc200x-core.c b/drivers/input/touchscreen/tsc200x-core.c index b7059ed8872e..88ea5e1b72ae 100644 --- a/drivers/input/touchscreen/tsc200x-core.c +++ b/drivers/input/touchscreen/tsc200x-core.c @@ -27,7 +27,6 @@ #include <linux/delay.h> #include <linux/pm.h> #include <linux/of.h> -#include <linux/spi/tsc2005.h> #include <linux/regulator/consumer.h> #include <linux/regmap.h> #include <linux/gpio/consumer.h> @@ -114,7 +113,6 @@ struct tsc200x { struct regulator *vio; struct gpio_desc *reset_gpio; - void (*set_reset)(bool enable); int (*tsc200x_cmd)(struct device *dev, u8 cmd); int irq; }; @@ -227,12 +225,13 @@ static void tsc200x_stop_scan(struct tsc200x *ts) ts->tsc200x_cmd(ts->dev, TSC200X_CMD_STOP); } -static void tsc200x_set_reset(struct tsc200x *ts, bool enable) +static void tsc200x_reset(struct tsc200x *ts) { - if (ts->reset_gpio) - gpiod_set_value_cansleep(ts->reset_gpio, enable); - else if (ts->set_reset) - ts->set_reset(enable); + if (ts->reset_gpio) { + gpiod_set_value_cansleep(ts->reset_gpio, 1); + usleep_range(100, 500); /* only 10us required */ + gpiod_set_value_cansleep(ts->reset_gpio, 0); + } } /* must be called with ts->mutex held */ @@ -253,7 +252,7 @@ static void __tsc200x_enable(struct tsc200x *ts) { tsc200x_start_scan(ts); - if (ts->esd_timeout && (ts->set_reset || ts->reset_gpio)) { + if (ts->esd_timeout && ts->reset_gpio) { ts->last_valid_interrupt = jiffies; schedule_delayed_work(&ts->esd_work, round_jiffies_relative( @@ -310,9 +309,7 @@ static ssize_t tsc200x_selftest_show(struct device *dev, } /* hardware reset */ - tsc200x_set_reset(ts, false); - usleep_range(100, 500); /* only 10us required */ - tsc200x_set_reset(ts, true); + tsc200x_reset(ts); if (!success) goto out; @@ -354,7 +351,7 @@ static umode_t tsc200x_attr_is_visible(struct kobject *kobj, umode_t mode = attr->mode; if (attr == &dev_attr_selftest.attr) { - if (!ts->set_reset && !ts->reset_gpio) + if (!ts->reset_gpio) mode = 0; } @@ -404,9 +401,7 @@ static void tsc200x_esd_work(struct work_struct *work) tsc200x_update_pen_state(ts, 0, 0, 0); - tsc200x_set_reset(ts, false); - usleep_range(100, 500); /* only 10us required */ - tsc200x_set_reset(ts, true); + tsc200x_reset(ts); enable_irq(ts->irq); tsc200x_start_scan(ts); @@ -454,26 +449,12 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, struct regmap *regmap, int (*tsc200x_cmd)(struct device *dev, u8 cmd)) { - const struct tsc2005_platform_data *pdata = dev_get_platdata(dev); - struct device_node *np = dev->of_node; - struct tsc200x *ts; struct input_dev *input_dev; - unsigned int max_x = MAX_12BIT; - unsigned int max_y = MAX_12BIT; - unsigned int max_p = MAX_12BIT; - unsigned int fudge_x = TSC200X_DEF_X_FUZZ; - unsigned int fudge_y = TSC200X_DEF_Y_FUZZ; - unsigned int fudge_p = TSC200X_DEF_P_FUZZ; - unsigned int x_plate_ohm = TSC200X_DEF_RESISTOR; - unsigned int esd_timeout; + u32 x_plate_ohm; + u32 esd_timeout; int error; - if (!np && !pdata) { - dev_err(dev, "no platform data\n"); - return -ENODEV; - } - if (irq <= 0) { dev_err(dev, "no irq\n"); return -ENODEV; @@ -487,23 +468,6 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, return -ENODEV; } - if (pdata) { - fudge_x = pdata->ts_x_fudge; - fudge_y = pdata->ts_y_fudge; - fudge_p = pdata->ts_pressure_fudge; - max_x = pdata->ts_x_max; - max_y = pdata->ts_y_max; - max_p = pdata->ts_pressure_max; - x_plate_ohm = pdata->ts_x_plate_ohm; - esd_timeout = pdata->esd_timeout_ms; - } else { - x_plate_ohm = TSC200X_DEF_RESISTOR; - of_property_read_u32(np, "ti,x-plate-ohms", &x_plate_ohm); - esd_timeout = 0; - of_property_read_u32(np, "ti,esd-recovery-timeout-ms", - &esd_timeout); - } - ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL); if (!ts) return -ENOMEM; @@ -517,8 +481,13 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, ts->idev = input_dev; ts->regmap = regmap; ts->tsc200x_cmd = tsc200x_cmd; - ts->x_plate_ohm = x_plate_ohm; - ts->esd_timeout = esd_timeout; + + error = device_property_read_u32(dev, "ti,x-plate-ohms", &x_plate_ohm); + ts->x_plate_ohm = error ? TSC200X_DEF_RESISTOR : x_plate_ohm; + + error = device_property_read_u32(dev, "ti,esd-recovery-timeout-ms", + &esd_timeout); + ts->esd_timeout = error ? 0 : esd_timeout; ts->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(ts->reset_gpio)) { @@ -527,16 +496,13 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, return error; } - ts->vio = devm_regulator_get_optional(dev, "vio"); + ts->vio = devm_regulator_get(dev, "vio"); if (IS_ERR(ts->vio)) { error = PTR_ERR(ts->vio); - dev_err(dev, "vio regulator missing (%d)", error); + dev_err(dev, "error acquiring vio regulator: %d", error); return error; } - if (!ts->reset_gpio && pdata) - ts->set_reset = pdata->set_reset; - mutex_init(&ts->mutex); spin_lock_init(&ts->lock); @@ -559,22 +525,23 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, input_dev->phys = ts->phys; input_dev->id = *tsc_id; - input_dev->dev.parent = dev; - input_dev->evbit[0] = BIT(EV_ABS) | BIT(EV_KEY); - input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); - - input_set_abs_params(input_dev, ABS_X, 0, max_x, fudge_x, 0); - input_set_abs_params(input_dev, ABS_Y, 0, max_y, fudge_y, 0); - input_set_abs_params(input_dev, ABS_PRESSURE, 0, max_p, fudge_p, 0); - - if (np) - touchscreen_parse_properties(input_dev, false, NULL); input_dev->open = tsc200x_open; input_dev->close = tsc200x_close; input_set_drvdata(input_dev, ts); + input_set_capability(input_dev, EV_KEY, BTN_TOUCH); + + input_set_abs_params(input_dev, ABS_X, + 0, MAX_12BIT, TSC200X_DEF_X_FUZZ, 0); + input_set_abs_params(input_dev, ABS_Y, + 0, MAX_12BIT, TSC200X_DEF_Y_FUZZ, 0); + input_set_abs_params(input_dev, ABS_PRESSURE, + 0, MAX_12BIT, TSC200X_DEF_P_FUZZ, 0); + + touchscreen_parse_properties(input_dev, false, NULL); + /* Ensure the touchscreen is off */ tsc200x_stop_scan(ts); @@ -587,12 +554,9 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, return error; } - /* enable regulator for DT */ - if (ts->vio) { - error = regulator_enable(ts->vio); - if (error) - return error; - } + error = regulator_enable(ts->vio); + if (error) + return error; dev_set_drvdata(dev, ts); error = sysfs_create_group(&dev->kobj, &tsc200x_attr_group); @@ -615,8 +579,7 @@ int tsc200x_probe(struct device *dev, int irq, const struct input_id *tsc_id, err_remove_sysfs: sysfs_remove_group(&dev->kobj, &tsc200x_attr_group); disable_regulator: - if (ts->vio) - regulator_disable(ts->vio); + regulator_disable(ts->vio); return error; } EXPORT_SYMBOL_GPL(tsc200x_probe); @@ -627,8 +590,7 @@ int tsc200x_remove(struct device *dev) sysfs_remove_group(&dev->kobj, &tsc200x_attr_group); - if (ts->vio) - regulator_disable(ts->vio); + regulator_disable(ts->vio); return 0; } diff --git a/drivers/input/touchscreen/zet6223.c b/drivers/input/touchscreen/zet6223.c new file mode 100644 index 000000000000..19ffcc7b886c --- /dev/null +++ b/drivers/input/touchscreen/zet6223.c @@ -0,0 +1,268 @@ +/* + * Copyright (C) 2016, Jelle van der Waa <jelle@vdwaa.nl> + * + * 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 <linux/delay.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/input/touchscreen.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/regulator/consumer.h> +#include <asm/unaligned.h> + +#define ZET6223_MAX_FINGERS 16 +#define ZET6223_MAX_PKT_SIZE (3 + 4 * ZET6223_MAX_FINGERS) + +#define ZET6223_CMD_INFO 0xB2 +#define ZET6223_CMD_INFO_LENGTH 17 +#define ZET6223_VALID_PACKET 0x3c + +#define ZET6223_POWER_ON_DELAY_MSEC 30 + +struct zet6223_ts { + struct i2c_client *client; + struct input_dev *input; + struct regulator *vcc; + struct regulator *vio; + struct touchscreen_properties prop; + struct regulator_bulk_data supplies[2]; + u16 max_x; + u16 max_y; + u8 fingernum; +}; + +static int zet6223_start(struct input_dev *dev) +{ + struct zet6223_ts *ts = input_get_drvdata(dev); + + enable_irq(ts->client->irq); + + return 0; +} + +static void zet6223_stop(struct input_dev *dev) +{ + struct zet6223_ts *ts = input_get_drvdata(dev); + + disable_irq(ts->client->irq); +} + +static irqreturn_t zet6223_irq(int irq, void *dev_id) +{ + struct zet6223_ts *ts = dev_id; + u16 finger_bits; + + /* + * First 3 bytes are an identifier, two bytes of finger data. + * X, Y data per finger is 4 bytes. + */ + u8 bufsize = 3 + 4 * ts->fingernum; + u8 buf[ZET6223_MAX_PKT_SIZE]; + int i; + int ret; + int error; + + ret = i2c_master_recv(ts->client, buf, bufsize); + if (ret != bufsize) { + error = ret < 0 ? ret : -EIO; + dev_err_ratelimited(&ts->client->dev, + "Error reading input data: %d\n", error); + return IRQ_HANDLED; + } + + if (buf[0] != ZET6223_VALID_PACKET) + return IRQ_HANDLED; + + finger_bits = get_unaligned_be16(buf + 1); + for (i = 0; i < ts->fingernum; i++) { + if (!(finger_bits & BIT(15 - i))) + continue; + + input_mt_slot(ts->input, i); + input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, true); + input_event(ts->input, EV_ABS, ABS_MT_POSITION_X, + ((buf[i + 3] >> 4) << 8) + buf[i + 4]); + input_event(ts->input, EV_ABS, ABS_MT_POSITION_Y, + ((buf[i + 3] & 0xF) << 8) + buf[i + 5]); + } + + input_mt_sync_frame(ts->input); + input_sync(ts->input); + + return IRQ_HANDLED; +} + +static void zet6223_power_off(void *_ts) +{ + struct zet6223_ts *ts = _ts; + + regulator_bulk_disable(ARRAY_SIZE(ts->supplies), ts->supplies); +} + +static int zet6223_power_on(struct zet6223_ts *ts) +{ + struct device *dev = &ts->client->dev; + int error; + + ts->supplies[0].supply = "vio"; + ts->supplies[1].supply = "vcc"; + + error = devm_regulator_bulk_get(dev, ARRAY_SIZE(ts->supplies), + ts->supplies); + if (error) + return error; + + error = regulator_bulk_enable(ARRAY_SIZE(ts->supplies), ts->supplies); + if (error) + return error; + + msleep(ZET6223_POWER_ON_DELAY_MSEC); + + error = devm_add_action_or_reset(dev, zet6223_power_off, ts); + if (error) { + dev_err(dev, "failed to install poweroff action: %d\n", error); + return error; + } + + return 0; +} + +static int zet6223_query_device(struct zet6223_ts *ts) +{ + u8 buf[ZET6223_CMD_INFO_LENGTH]; + u8 cmd = ZET6223_CMD_INFO; + int ret; + int error; + + ret = i2c_master_send(ts->client, &cmd, sizeof(cmd)); + if (ret != sizeof(cmd)) { + error = ret < 0 ? ret : -EIO; + dev_err(&ts->client->dev, + "touchpanel info cmd failed: %d\n", error); + return error; + } + + ret = i2c_master_recv(ts->client, buf, sizeof(buf)); + if (ret != sizeof(buf)) { + error = ret < 0 ? ret : -EIO; + dev_err(&ts->client->dev, + "failed to retrieve touchpanel info: %d\n", error); + return error; + } + + ts->fingernum = buf[15] & 0x7F; + if (ts->fingernum > ZET6223_MAX_FINGERS) { + dev_warn(&ts->client->dev, + "touchpanel reports %d fingers, limiting to %d\n", + ts->fingernum, ZET6223_MAX_FINGERS); + ts->fingernum = ZET6223_MAX_FINGERS; + } + + ts->max_x = get_unaligned_le16(&buf[8]); + ts->max_y = get_unaligned_le16(&buf[10]); + + return 0; +} + +static int zet6223_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct zet6223_ts *ts; + struct input_dev *input; + int error; + + if (!client->irq) { + dev_err(dev, "no irq specified\n"); + return -EINVAL; + } + + ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; + + ts->client = client; + + error = zet6223_power_on(ts); + if (error) + return error; + + error = zet6223_query_device(ts); + if (error) + return error; + + ts->input = input = devm_input_allocate_device(dev); + if (!input) + return -ENOMEM; + + input_set_drvdata(input, ts); + + input->name = client->name; + input->id.bustype = BUS_I2C; + input->open = zet6223_start; + input->close = zet6223_stop; + + input_set_abs_params(input, ABS_MT_POSITION_X, 0, ts->max_x, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, ts->max_y, 0, 0); + + touchscreen_parse_properties(input, true, &ts->prop); + + error = input_mt_init_slots(input, ts->fingernum, + INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); + if (error) + return error; + + error = devm_request_threaded_irq(dev, client->irq, NULL, zet6223_irq, + IRQF_ONESHOT, client->name, ts); + if (error) { + dev_err(dev, "failed to request irq %d: %d\n", + client->irq, error); + return error; + } + + zet6223_stop(input); + + error = input_register_device(input); + if (error) + return error; + + return 0; +} + +static const struct of_device_id zet6223_of_match[] = { + { .compatible = "zeitec,zet6223" }, + { } +}; +MODULE_DEVICE_TABLE(of, zet6223_of_match); + +static const struct i2c_device_id zet6223_id[] = { + { "zet6223", 0}, + { } +}; +MODULE_DEVICE_TABLE(i2c, zet6223_id); + +static struct i2c_driver zet6223_driver = { + .driver = { + .name = "zet6223", + .of_match_table = zet6223_of_match, + }, + .probe = zet6223_probe, + .id_table = zet6223_id +}; +module_i2c_driver(zet6223_driver); + +MODULE_AUTHOR("Jelle van der Waa <jelle@vdwaa.nl>"); +MODULE_DESCRIPTION("ZEITEC zet622x I2C touchscreen driver"); +MODULE_LICENSE("GPL"); |