From: Felipe Balbi <felipe.balbi@xxxxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxx>
---
drivers/input/touchscreen/Kconfig | 14 ++
drivers/input/touchscreen/Makefile | 1 +
drivers/input/touchscreen/tsc210x_ts.c | 160 ++++++++++++++++++++++
include/linux/spi/tsc210x.h | 231 ++++++++++++++++++++++++++++++++
4 files changed, 406 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/touchscreen/tsc210x_ts.c
create mode 100644 include/linux/spi/tsc210x.h
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index a115f38..f45cdac 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -222,6 +222,20 @@ config TOUCHSCREEN_TSC2005
help
Say Y here for if you are using the touchscreen features of TSC2301.
+config TOUCHSCREEN_TSC210X
+ tristate "TI TSC210x based touchscreens"
+ depends on SPI_MASTER
+ select SPI_TSC210X
+ help
+ Say Y here if you have a touchscreen interface using a
+ TI TSC210x controller, and your board-specific initialisation
+ code includes that in its table of SPI devices.
+
+ If unsure, say N (but it's safe to say "Y").
+
+ To compile this driver as a module, choose M here: the
+ module will be called tsc210x_ts.
+
config TOUCHSCREEN_UCB1400
tristate "Philips UCB1400 touchscreen"
select AC97_BUS
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index e0bc8fb..411c44a 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -28,6 +28,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
obj-$(CONFIG_TOUCHSCREEN_TSC2005) += tsc2005.o
obj-$(CONFIG_TOUCHSCREEN_OMAP) += omap/
+obj-$(CONFIG_TOUCHSCREEN_TSC210X) += tsc210x_ts.o
obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o
diff --git a/drivers/input/touchscreen/tsc210x_ts.c b/drivers/input/touchscreen/tsc210x_ts.c
new file mode 100644
index 0000000..5828b6d
--- /dev/null
+++ b/drivers/input/touchscreen/tsc210x_ts.c
@@ -0,0 +1,160 @@
+/*
+ * tsc210x_ts.c - touchscreen input device for TI TSC210x chips
+ *
+ * Copyright (c) 2006-2007 Andrzej Zaborowski <balrog@xxxxxxxxx>
+ *
+ * This package 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 package 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 package; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/input.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <linux/spi/tsc210x.h>
+
+
+/*
+ * The sensor ADC on tsc210x chips is most often used with the smart
+ * touchscreen controller. Those controllers can be made to improve
+ * sample quality directly by multi-sampling and by taking the mean or
+ * median of various numbers of samples. They also take X, Y, and
+ * pressure measurements automatically, so this driver has relatively
+ * little to do.
+ *
+ * There are a few chips in this family that don't have quite the same
+ * touchscreen interface, e.g. no "median" mode.
+ */
+
+static void tsc210x_touch(void *context, int touching)
+{
+ struct input_dev *dev = context;
+
+ if (!touching) {
+ input_report_abs(dev, ABS_X, 0);
+ input_report_abs(dev, ABS_Y, 0);
+ input_report_abs(dev, ABS_PRESSURE, 0);
+ input_sync(dev);
+ }
+
+ input_report_key(dev, BTN_TOUCH, touching);
+}
+
+static void tsc210x_coords(void *context, int x, int y, int z1, int z2)
+{
+ struct input_dev *dev = context;
+ int p;
+
+ /* Calculate the touch resistance a la equation #1 */
+ if (z1 != 0)
+ p = x * (z2 - z1) / (z1 << 4);
+ else
+ p = 1;
+
+ input_report_abs(dev, ABS_X, x);
+ input_report_abs(dev, ABS_Y, y);
+ input_report_abs(dev, ABS_PRESSURE, p);
+ input_sync(dev);
+}
+
+static int tsc210x_ts_probe(struct platform_device *pdev)
+{
+ int status;
+ struct input_dev *dev;
+
+ dev = input_allocate_device();
+ if (!dev)
+ return -ENOMEM;
+
+ status = tsc210x_touch_cb(pdev->dev.parent, tsc210x_touch, dev);
+ if (status) {
+ input_free_device(dev);
+ return status;
+ }
+
+ status = tsc210x_coords_cb(pdev->dev.parent, tsc210x_coords, dev);
+ if (status) {
+ tsc210x_touch_cb(pdev->dev.parent, NULL, NULL);
+ input_free_device(dev);
+ return status;
+ }
+
+ dev->name = "TSC210x Touchscreen";
+ dev->dev.parent = &pdev->dev;
+ dev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
+ dev->keybit[BIT_WORD(BTN_TOUCH)] |= BIT_MASK(BTN_TOUCH);
+ dev->absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
+ dev->phys = "tsc210x/input0";
+ dev->id.bustype = BUS_HOST;
+ dev->id.vendor = 0x0001;
+ dev->id.product = 0x2100;
+ dev->id.version = 0x0001;
+
+ status = input_register_device(dev);
+ if (status) {
+ tsc210x_coords_cb(pdev->dev.parent, NULL, NULL);
+ tsc210x_touch_cb(pdev->dev.parent, NULL, NULL);
+ input_free_device(dev);
+ return status;
+ }
+
+ platform_set_drvdata(pdev, dev);
+ printk(KERN_INFO "TSC210x touchscreen initialised\n");
+ return 0;
+}
+
+static int __exit tsc210x_ts_remove(struct platform_device *pdev)
+{
+ struct input_dev *dev = platform_get_drvdata(pdev);
+
+ tsc210x_touch_cb(pdev->dev.parent, NULL, NULL);
+ tsc210x_coords_cb(pdev->dev.parent, NULL, NULL);
+ platform_set_drvdata(pdev, NULL);
+ input_unregister_device(dev);
+ input_free_device(dev);
+
+ return 0;
+}
+
+static struct platform_driver tsc210x_ts_driver = {
+ .probe = tsc210x_ts_probe,
+ .remove = __exit_p(tsc210x_ts_remove),
+ /* Nothing to do on suspend/resume */
+ .driver = {
+ .name = "tsc210x-ts",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init tsc210x_ts_init(void)
+{
+ /* can't use driver_probe() here since the parent device
+ * gets registered "late"
+ */
+ return platform_driver_register(&tsc210x_ts_driver);
+}
+module_init(tsc210x_ts_init);
+
+static void __exit tsc210x_ts_exit(void)
+{
+ platform_driver_unregister(&tsc210x_ts_driver);
+}
+module_exit(tsc210x_ts_exit);
+
+MODULE_AUTHOR("Andrzej Zaborowski");
+MODULE_DESCRIPTION("Touchscreen input driver for TI TSC2101/2102.");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/spi/tsc210x.h b/include/linux/spi/tsc210x.h
new file mode 100644
index 0000000..b1a9ae6
--- /dev/null
+++ b/include/linux/spi/tsc210x.h
@@ -0,0 +1,231 @@
+/*
+ * include/linux/spi/tsc2102.h
+ *
+ * TI TSC2101/2102 control register definitions.
+ *
+ * Copyright (c) 2005-2007 Andrzej Zaborowski <balrog@xxxxxxxxx>
+ *
+ * This package 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 package 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 package; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef __LINUX_SPI_TSC210X_H
+#define __LINUX_SPI_TSC210X_H
+
+struct apm_power_info;
+
+struct tsc210x_config {
+ int use_internal; /* Use internal reference voltage */
+ u32 monitor; /* What inputs are wired on this board */
+ int temp_at25c[2]; /* Thermometer calibration data */
+ void (*apm_report)(struct apm_power_info *info, int battery[]);
+ /* Report status to APM based on battery[] */
+ void *alsa_config; /* .platform_data for the ALSA device */
+ const char *mclk; /* Optional: mclk name */
+ const char *bclk; /* Optional: bclk name */
+};
+
+#define TSC_BAT1 (1 << 0)
+#define TSC_BAT2 (1 << 1)
+#define TSC_AUX1 (1 << 2)
+#define TSC_AUX2 (1 << 3)
+#define TSC_TEMP (1 << 4)
+
+#define TSC_AUX TSC_AUX1
+#define TSC_VBAT TSC_BAT1
+
+struct tsc210x_dev;
+
+/* Drivers for tsc210x components like touchscreen, sensor, and audio
+ * are packaged as platform drivers which can issue synchronous register
+ * acceses, and may also register a callback to process their particular
+ * type of data when that data is automatically sampled. The platform
+ * device is a child of the TSC spi device.
+ */
+
+extern int tsc210x_read_sync(struct tsc210x_dev *dev, int page, u8 address);
+extern int tsc210x_reads_sync(struct tsc210x_dev *dev, int page,
+ u8 startaddress, u16 *data, int numregs);
+extern int tsc210x_write_sync(struct tsc210x_dev *dev, int page,
+ u8 address, u16 data);
+
+typedef void (*tsc210x_touch_t)(void *context, int touching);
+typedef void (*tsc210x_coords_t)(void *context, int x, int y, int z1, int z2);
+typedef void (*tsc210x_ports_t)(void *context, int bat[], int aux[]);
+typedef void (*tsc210x_temp_t)(void *context, int temp);
+
+extern int tsc210x_touch_cb(struct device *dev,
+ tsc210x_touch_t handler, void *context);
+extern int tsc210x_coords_cb(struct device *dev,
+ tsc210x_coords_t handler, void *context);
+extern int tsc210x_ports_cb(struct device *dev,
+ tsc210x_ports_t handler, void *context);
+extern int tsc210x_temp1_cb(struct device *dev,
+ tsc210x_temp_t handler, void *context);
+extern int tsc210x_temp2_cb(struct device *dev,
+ tsc210x_temp_t handler, void *context);
+
+#if defined(CONFIG_SOUND) || defined(CONFIG_SOUND_MODULE)
+extern void tsc210x_set_dac_volume(struct device *dev, u8 left, u8 right);
+extern void tsc210x_set_dac_mute(struct device *dev, int left, int right);
+extern void tsc210x_get_dac_mute(struct device *dev, int *left, int *right);
+extern void tsc210x_dac_power(struct device *dev, int on);
+extern int tsc210x_set_rate(struct device *dev, int rate);
+extern void tsc210x_set_i2s_master(struct device *dev, int state);
+extern void tsc210x_set_deemphasis(struct device *dev, int enable);
+extern void tsc2102_set_bassboost(struct device *dev, int enable);
+#endif
+
+/*
+ * Emit a short keyclick typically in order to give feedback to
+ * user on specific events.
+ *
+ * amplitude must be between 0 (lowest) and 2 (highest).
+ * freq must be between 0 (corresponds to 62.5 Hz) and 7 (8 kHz).
+ * length should be between 2 and 32 periods.
+ *
+ * This function sleeps but for a period unrelated to the length of
+ * the sound, i.e. returning doesn't indicate that the sound has
+ * finished.
+ */
+extern void tsc210x_keyclick(struct tsc210x_dev *dev,
+ int amplitude, int freq, int length);
+
+/* Page 0, Touch Screen & Keypad Data registers */
+#define TSC210X_TS_X 0, 0x00
+#define TSC210X_TS_Y 0, 0x01
+#define TSC210X_TS_Z1 0, 0x02
+#define TSC210X_TS_Z2 0, 0x03
+#define TSC210X_TS_BAT1 0, 0x05
+#define TSC2102_TS_BAT2 0, 0x06
+#define TSC210X_TS_AUX1 0, 0x07
+#define TSC2101_TS_AUX2 0, 0x08
+#define TSC210X_TS_TEMP1 0, 0x09
+#define TSC210X_TS_TEMP2 0, 0x0a
+
+/* Page 1, Touch Screen & Keypad Control registers */
+#define TSC210X_TS_ADC_CTRL 1, 0x00
+#define TSC210X_TS_STATUS_CTRL 1, 0x01
+#define TSC2101_TS_BUFFER_CTRL 1, 0x02
+#define TSC210X_TS_REF_CTRL 1, 0x03
+#define TSC210X_TS_RESET_CTRL 1, 0x04
+#define TSC210X_TS_CONFIG_CTRL 1, 0x05
+#define TSC2101_TS_TEMPMAX_CTRL 1, 0x06
+#define TSC2101_TS_TEMPMIN_CTRL 1, 0x07
+#define TSC2101_TS_AUX1MAX_CTRL 1, 0x08
+#define TSC2101_TS_AUX1MIN_CTRL 1, 0x09
+#define TSC2101_TS_AUX2MAX_CTRL 1, 0x0a
+#define TSC2101_TS_AUX2MIN_CTRL 1, 0x0b
+#define TSC2101_TS_MCONFIG_CTRL 1, 0x0c
+#define TSC2101_TS_DELAY_CTRL 1, 0x0d
+
+/* Page 2, Audio Control registers */
+#define TSC210X_AUDIO1_CTRL 2, 0x00
+#define TSC2101_HEADSET_GAIN_CTRL 2, 0x01
+#define TSC210X_DAC_GAIN_CTRL 2, 0x02
+#define TSC2101_MIXER_GAIN_CTRL 2, 0x03
+#define TSC210X_AUDIO2_CTRL 2, 0x04
+#define TSC210X_POWER_CTRL 2, 0x05
+#define TSC210X_AUDIO3_CTRL 2, 0x06
+#define TSC210X_LCH_BASS_BOOST_N0 2, 0x07
+#define TSC210X_LCH_BASS_BOOST_N1 2, 0x08
+#define TSC210X_LCH_BASS_BOOST_N2 2, 0x09
+#define TSC210X_LCH_BASS_BOOST_N3 2, 0x0a
+#define TSC210X_LCH_BASS_BOOST_N4 2, 0x0b
+#define TSC210X_LCH_BASS_BOOST_N5 2, 0x0c
+#define TSC210X_LCH_BASS_BOOST_D1 2, 0x0d
+#define TSC210X_LCH_BASS_BOOST_D2 2, 0x0e
+#define TSC210X_LCH_BASS_BOOST_D4 2, 0x0f
+#define TSC210X_LCH_BASS_BOOST_D5 2, 0x10
+#define TSC210X_RCH_BASS_BOOST_N0 2, 0x11
+#define TSC210X_RCH_BASS_BOOST_N1 2, 0x12
+#define TSC210X_RCH_BASS_BOOST_N2 2, 0x13
+#define TSC210X_RCH_BASS_BOOST_N3 2, 0x14
+#define TSC210X_RCH_BASS_BOOST_N4 2, 0x15
+#define TSC210X_RCH_BASS_BOOST_N5 2, 0x16
+#define TSC210X_RCH_BASS_BOOST_D1 2, 0x17
+#define TSC210X_RCH_BASS_BOOST_D2 2, 0x18
+#define TSC210X_RCH_BASS_BOOST_D4 2, 0x19
+#define TSC210X_RCH_BASS_BOOST_D5 2, 0x1a
+#define TSC210X_PLL1_CTRL 2, 0x1b
+#define TSC210X_PLL2_CTRL 2, 0x1c
+#define TSC210X_AUDIO4_CTRL 2, 0x1d
+#define TSC2101_HANDSET_GAIN_CTRL 2, 0x1e
+#define TSC2101_CELL_GAIN_CTRL 2, 0x1f
+#define TSC2101_AUIDO5_CTRL 2, 0x20
+#define TSC2101_AUDIO6_CTRL 2, 0x21
+#define TSC2101_AUDIO7_CTRL 2, 0x22
+#define TSC2101_GPIO_CTRL 2, 0x23
+#define TSC2101_IN_AGC_CTRL 2, 0x24
+#define TSC2101_POWER_STATUS 2, 0x25
+#define TSC2101_MIX_AGC_CTRL 2, 0x26
+#define TSC2101_CELL_AGC_CTRL 2, 0x27
+
+/* Field masks for Audio Control 1 */
+#define AC1_WLEN(ARG) (((ARG) & 0x03) << 10)
+#define AC1_DATFM(ARG) (((ARG) & 0x03) << 8)
+#define AC1_DACFS(ARG) ((ARG) & 0x3f)
+
+/* Field masks for TSC2102_DAC_GAIN_CTRL */
+#define DGC_DALMU (1 << 15)
+#define DGC_DALVL(ARG) (((ARG) & 0x7f) << 8)
+#define DGC_DARMU (1 << 7)
+#define DGC_DARVL(ARG) (((ARG) & 0x7f))
+
+/* Field formats for TSC210X_AUDIO2_CTRL */
+#define AC2_KCLEN (1 << 15)
+#define AC2_KCLAC(ARG) (((ARG) & 0x07) << 12)
+#define AC2_KCLFRQ(ARG) (((ARG) & 0x07) << 8)
+#define AC2_KCLLN(ARG) (((ARG) & 0x0f) << 4)
+#define AC2_DLGAF (1 << 3)
+#define AC2_DRGAF (1 << 2)
+#define AC2_DASTC (1 << 1)
+
+/* Field masks for TSC210X_DAC_POWER_CTRL */
+#define CPC_PWDNC (1 << 15)
+#define CPC_DAODRC (1 << 12)
+#define CPC_DAPWDN (1 << 10)
+#define CPC_VGPWDN (1 << 8)
+#define CPC_DAPWDF (1 << 6)
+#define CPC_BASSBC (1 << 1)
+#define CPC_DEEMPF (0x01)
+
+/* Field masks for TSC210X_AUDIO3_CTRL */
+#define AC3_DMSVOL(ARG) (((ARG) & 0x03) << 14)
+#define AC3_REFFS (1 << 13)
+#define AC3_DAXFM (1 << 12)
+#define AC3_SLVMS (1 << 11)
+#define AC3_DALOVF (1 << 7)
+#define AC3_DAROVF (1 << 6)
+#define AC3_REVID(ARG) (((ARG) & 0x07))
+
+/* Field masks for TSC210X_PLL1_CTRL */
+#define PLL1_PLLEN (1 << 15)
+#define PLL1_Q_VAL(ARG) (((ARG) & 0x0f) << 11)
+#define PLL1_P_VAL(ARG) (((ARG) & 0x07) << 8)
+#define PLL1_I_VAL(ARG) (((ARG) & 0x3f) << 2)
+
+/* Field masks for TSC210X_PLL2_CTRL */
+#define PLL2_D_VAL(ARG) (((ARG) & 0x3fff) << 2)
+
+/* Field masks for TSC210X_AUDIO4_CTRL */
+#define AC4_DASTPD (1 << 14)
+
+struct tsc210x_rate_info_s {
+ u16 sample_rate;
+ u8 divisor;
+ u8 fs_44k; /* 44.1 kHz Fsref if 1, 48 kHz if 0 */
+};
+
+#endif /* __LINUX_SPI_TSC210X_H */
--
1.6.0.1.141.g445ca
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