diff options
author | Richard Purdie <richard.purdie@linuxfoundation.org> | 2011-02-18 15:32:57 +0000 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2011-02-18 15:36:06 +0000 |
commit | 673abd92f999829bdd67d0273c43570a62123a63 (patch) | |
tree | 63132d1ffc1cb5bf50d244b184ca8d58a9cbc85c /meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-touchscreen-driver.patch | |
parent | fed61beb31c47e2d96af905a7047fe78d64c9bd0 (diff) | |
download | openembedded-core-673abd92f999829bdd67d0273c43570a62123a63.tar.gz openembedded-core-673abd92f999829bdd67d0273c43570a62123a63.tar.bz2 openembedded-core-673abd92f999829bdd67d0273c43570a62123a63.tar.xz openembedded-core-673abd92f999829bdd67d0273c43570a62123a63.zip |
conf/machine: Drop older machines with no recent updates
These are all moving to meta-extras. Ideally in the future machines
such as these will be maintained to topic specific layers as we move
to a more layer oriented model. If this causes a problem for anyone
please discuss it on the mailing list.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-touchscreen-driver.patch')
-rw-r--r-- | meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-touchscreen-driver.patch | 996 |
1 files changed, 0 insertions, 996 deletions
diff --git a/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-touchscreen-driver.patch b/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-touchscreen-driver.patch deleted file mode 100644 index 1b11cd352..000000000 --- a/meta/recipes-kernel/linux/linux-netbook-2.6.33.2/linux-2.6.34-moorestown-touchscreen-driver.patch +++ /dev/null @@ -1,996 +0,0 @@ -From f7ba5de3af0c7d3abd7624676e07752e5d8b7ebd Mon Sep 17 00:00:00 2001 -From: Jacob Pan <jacob.jun.pan@intel.com> -Date: Fri, 4 Dec 2009 10:57:07 -0800 -Subject: [PATCH 040/104] MRST: touch screen driver - ---- - drivers/input/touchscreen/Kconfig | 9 + - drivers/input/touchscreen/Makefile | 2 + - drivers/input/touchscreen/mrstouch.c | 947 ++++++++++++++++++++++++++++++++++ - 3 files changed, 958 insertions(+), 0 deletions(-) - create mode 100644 drivers/input/touchscreen/mrstouch.c - -diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig -index dfafc76..6dd2674 100644 ---- a/drivers/input/touchscreen/Kconfig -+++ b/drivers/input/touchscreen/Kconfig -@@ -577,4 +577,13 @@ config TOUCHSCREEN_PCAP - - To compile this driver as a module, choose M here: the - module will be called pcap_ts. -+ -+config TOUCHSCREEN_MRSTOUCH -+ tristate "Intel Moorstown Resistive touchscreen" -+ depends on LNW_IPC -+ default y -+ help -+ Say Y here if you have a Intel Moorstown based Touchscreen -+ If unsure, say N. -+ - endif -diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile -index d61a3b4..15ad257 100644 ---- a/drivers/input/touchscreen/Makefile -+++ b/drivers/input/touchscreen/Makefile -@@ -45,3 +45,5 @@ obj-$(CONFIG_TOUCHSCREEN_WM97XX_ATMEL) += atmel-wm97xx.o - obj-$(CONFIG_TOUCHSCREEN_WM97XX_MAINSTONE) += mainstone-wm97xx.o - obj-$(CONFIG_TOUCHSCREEN_WM97XX_ZYLONITE) += zylonite-wm97xx.o - obj-$(CONFIG_TOUCHSCREEN_W90X900) += w90p910_ts.o -+obj-$(CONFIG_TOUCHSCREEN_MRSTOUCH) += mrstouch.o -+ -diff --git a/drivers/input/touchscreen/mrstouch.c b/drivers/input/touchscreen/mrstouch.c -new file mode 100644 -index 0000000..f6aba7d ---- /dev/null -+++ b/drivers/input/touchscreen/mrstouch.c -@@ -0,0 +1,947 @@ -+/* -+ * mrstouch.c - Intel Moorestown 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; ifnot, 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) -+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -+ */ -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/input.h> -+#include <linux/interrupt.h> -+#include <linux/err.h> -+#include <linux/param.h> -+#include <linux/spi/spi.h> -+#include <linux/irq.h> -+#include <linux/delay.h> -+#include <linux/kthread.h> -+#include <asm/ipc_defs.h> -+ -+MODULE_AUTHOR("Sreedhara Murthy. D.S, sreedhara.ds@intel.com"); -+MODULE_DESCRIPTION("Intel Moorestown Resistive Touch Screen Driver"); -+MODULE_LICENSE("GPL"); -+ -+#if defined(MRSTOUCH_DEBUG) -+#define mrstouch_debug(fmt, args...)\ -+ do { \ -+ printk(KERN_DEBUG "\n[MRSTOUCH(%d)] - ", __LINE__); \ -+ printk(KERN_DEBUG fmt, ##args); \ -+ } while (0); -+#else -+#define mrstouch_debug(fmt, args...) -+#endif -+ -+#define mrstouch_error(fmt, args...)\ -+ do { \ -+ printk(KERN_ERR "\n[MRSTOUCH(%d)] - ", __LINE__); \ -+ printk(KERN_ERR fmt, ##args); \ -+ } while (0); -+ -+/* 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 coordinate constants */ -+#define TOUCH_PRESSURE 5 -+#define TOUCH_PRESSURE_FS 100 -+ -+#define XMOVE_LIMIT 5 -+#define YMOVE_LIMIT 5 -+#define XYMOVE_CNT 3 -+ -+#define MAX_10BIT ((1<<10)-1) -+ -+/* Touch screen channel BIAS constants */ -+#define XBIAS 0x20 -+#define YBIAS 0x40 -+#define ZBIAS 0x80 -+ -+/* Touch screen coordinates */ -+#define MIN_X 10 -+#define MAX_X 1024 -+#define MIN_Y 10 -+#define MAX_Y 1024 -+#define WAIT_ADC_COMPLETION 10 -+ -+/* 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 spi_device *spi; /* SPI device associated with touch screen */ -+ struct input_dev *input; /* input device for touchscreen*/ -+ char phys[32]; /* Device name */ -+ struct task_struct *pendet_thrd; /* PENDET interrupt handler */ -+ struct semaphore lock; /* Sync between interrupt and PENDET handler */ -+ bool busy; /* Busy flag */ -+ u16 asr; /* Address selection register */ -+ int irq; /* Touch screen IRQ # */ -+ uint vendor; /* PMIC vendor */ -+ uint rev; /* PMIC revision */ -+ bool suspended; /* Device suspended status */ -+ bool disabled; /* Device disabled status */ -+ u16 x; /* X coordinate */ -+ u16 y; /* Y coordinate */ -+ bool pendown; /* PEN position */ -+} ; -+ -+ -+/* Global Pointer to Touch screen device */ -+static struct mrstouch_dev *mrstouchdevp; -+ -+/* Utility to read PMIC ID */ -+static int mrstouch_pmic_id(uint *vendor, uint *rev) -+{ -+ int err; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 1; -+ ipcbuf.pmic_reg_data[0].register_address = PMIC_REG_ID1; -+ -+ err = ipc_pmic_register_read(&ipcbuf); -+ if (err) -+ return -1; -+ -+ *vendor = (ipcbuf.pmic_reg_data[0].value) & 0x7; -+ *rev = (ipcbuf.pmic_reg_data[0].value >> 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(void) -+{ -+ int err, i, j, chan, found; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ -+ found = -1; -+ ipcbuf.num_entries = 4; -+ -+ for (i = 0; i < MRSTOUCH_MAX_CHANNELS; i++) { -+ if (found >= 0) -+ break; -+ -+ for (j = 0; j <= 3; j++) -+ ipcbuf.pmic_reg_data[j].register_address = PMICADDR0+i; -+ -+ err = ipc_pmic_register_read(&ipcbuf); -+ if (err) -+ return -1; -+ -+ for (j = 0; j < ipcbuf.num_entries; j++) { -+ chan = ipcbuf.pmic_reg_data[j].value; -+ if (chan == END_OF_CHANNEL) { -+ found = i; -+ break; -+ } -+ } -+ } -+ -+ if (found < 0) -+ return 0; -+ -+ if (mrstouchdevp->vendor == PMIC_VENDOR_FS) { -+ if (found && found > (MRSTOUCH_MAX_CHANNELS - 18)) -+ return -1; -+ } else { -+ if (found && found > (MRSTOUCH_MAX_CHANNELS - 4)) -+ return -1; -+ } -+ return found; -+} -+ -+/* Utility to enable/disable pendet. -+ * pendet set to true enables PENDET interrupt -+ * pendet set to false disables PENDET interrupt -+ * Also clears RND mask bit -+*/ -+static void pendet_enable(bool pendet) -+{ -+ u8 adccntrl1 = 0; -+ u8 pendet_enabled = 0; -+ int retry = 0; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ -+ ipcbuf.num_entries = 1; -+ ipcbuf.pmic_reg_data[0].register_address = PMIC_REG_ADCCNTL1; -+ ipc_pmic_register_read(&ipcbuf); -+ adccntrl1 = ipcbuf.pmic_reg_data[0].value; -+ -+ if (pendet) -+ adccntrl1 |= 0x20; /* Enable pendet */ -+ else -+ adccntrl1 &= 0xDF; /* Disable pendet */ -+ -+ ipcbuf.num_entries = 2; -+ ipcbuf.pmic_reg_data[0].register_address = PMIC_REG_MADCINT; -+ ipcbuf.pmic_reg_data[0].value = 0x0; -+ ipcbuf.pmic_reg_data[1].register_address = PMIC_REG_ADCCNTL1; -+ ipcbuf.pmic_reg_data[1].value = adccntrl1; -+ ipc_pmic_register_write(&ipcbuf, 1); -+ -+ if (!pendet) -+ return; -+ -+ -+ /* -+ * Sometimes even after ipc_pmic_register_write success -+ * the PMIC register value is not updated. Retry few iterations -+ * to enable pendet. -+ */ -+ ipcbuf.num_entries = 1; -+ ipcbuf.pmic_reg_data[0].register_address = PMIC_REG_ADCCNTL1; -+ ipc_pmic_register_read(&ipcbuf); -+ pendet_enabled = (ipcbuf.pmic_reg_data[0].value >> 5) & 0x01; -+ -+ retry = 0; -+ while (!pendet_enabled) { -+ retry++; -+ msleep(10); -+ ipcbuf.pmic_reg_data[0].register_address = PMIC_REG_ADCCNTL1; -+ ipcbuf.pmic_reg_data[0].value = adccntrl1; -+ ipc_pmic_register_write(&ipcbuf, 1); -+ -+ ipcbuf.pmic_reg_data[0].register_address = PMIC_REG_ADCCNTL1; -+ ipc_pmic_register_read(&ipcbuf); -+ pendet_enabled = (ipcbuf.pmic_reg_data[0].value >> 5) & 0x01; -+ if (retry >= 10) { -+ printk(KERN_ERR "Touch screen disabled\n"); -+ break; -+ } -+ } -+} -+ -+ -+/* To read PMIC ADC touch screen result -+ * Reads ADC storage registers for higher 7 and lower 3 bits -+ * converts the two readings to single value and turns off gain bit -+ */ -+static int mrstouch_ts_chan_read(u16 offset, u16 chan, u16 *vp, u16 *vm) -+{ -+ int err, count; -+ u16 result; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 4; -+ -+ result = PMIC_REG_ADCSNS0H + offset; -+ -+ if (chan == MRST_TS_CHAN12) -+ result += 4; -+ -+ for (count = 0; count <= 3; count++) -+ ipcbuf.pmic_reg_data[count].register_address = result++; -+ -+ err = ipc_pmic_register_read(&ipcbuf); -+ if (err) -+ return -1; -+ -+ *vp = ipcbuf.pmic_reg_data[0].value << 3; /* Higher 7 bits */ -+ *vp |= ipcbuf.pmic_reg_data[1].value & 0x7; /* Lower 3 bits */ -+ *vp &= 0x3FF; -+ -+ *vm = ipcbuf.pmic_reg_data[2].value << 3; /* Higher 7 bits */ -+ *vm |= ipcbuf.pmic_reg_data[3].value & 0x7; /* Lower 3 bits */ -+ *vm &= 0x3FF; -+ -+ return 0; -+} -+ -+/* To configure touch screen channels -+ * Writes touch screen channels to ADC address selection registers -+ */ -+static int mrstouch_ts_chan_set(uint offset) -+{ -+ int err, count; -+ u16 chan; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 5; -+ -+ chan = PMICADDR0 + offset; -+ for (count = 0; count <= 3; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = MRST_TS_CHAN10 + count; -+ } -+ ipcbuf.pmic_reg_data[count].register_address = chan; -+ ipcbuf.pmic_reg_data[count].value = END_OF_CHANNEL; -+ -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ return -1; -+ -+ return 0; -+} -+ -+/* Initialize ADC */ -+static int mrstouch_adc_init(struct mrstouch_dev *tsdev) -+{ -+ int err, start; -+ struct ipc_pmic_mod_reg_data ipcbuf; -+ -+ err = mrstouch_pmic_id(&tsdev->vendor, &tsdev->rev); -+ if (err) { -+ printk(KERN_ERR "Error in reading PMIC Id"); -+ return err; -+ } -+ -+ start = mrstouch_chan_parse(); -+ if (start == -1) { -+ printk(KERN_ERR "Error in parse channels"); -+ return start; -+ } -+ -+ tsdev->asr = start; -+ -+ mrstouch_debug("Channel offset(%d): 0x%X\n", tsdev->asr, tsdev->vendor); -+ -+ /* 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 (continous loop) in MAXIM stops PENDET -+ * interrupt generation sometimes. -+ */ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 2; -+ ipcbuf.pmic_mod_reg_data[0].register_address = PMIC_REG_ADCCNTL1; -+ ipcbuf.pmic_mod_reg_data[0].bit_map = 0xE7; -+ -+ ipcbuf.pmic_mod_reg_data[1].register_address = PMIC_REG_MADCINT; -+ ipcbuf.pmic_mod_reg_data[1].bit_map = 0x03; -+ -+ if (tsdev->vendor == PMIC_VENDOR_FS) { -+ ipcbuf.pmic_mod_reg_data[0].value = 0xE0 | ADC_LOOP_DELAY0; -+ ipcbuf.pmic_mod_reg_data[1].value = 0x5; -+ } else { -+ /* NEC and MAXIm not consistent with loop delay 0 */ -+ ipcbuf.pmic_mod_reg_data[0].value = 0xE0 | ADC_LOOP_DELAY1; -+ ipcbuf.pmic_mod_reg_data[1].value = 0x0; -+ -+ /* configure touch screen channels */ -+ err = mrstouch_ts_chan_set(tsdev->asr); -+ if (err) -+ return err; -+ } -+ -+ err = ipc_pmic_register_read_modify(&ipcbuf); -+ -+ return err; -+} -+ -+/* Reports x,y coordinates to event subsystem */ -+static void mrstouch_report_xy(u16 x, u16 y, u16 z) -+{ -+ int xdiff, ydiff; -+ -+ if (mrstouchdevp->pendown && z <= TOUCH_PRESSURE) { -+ /* Pen removed, report button release */ -+ mrstouch_debug("BTN REL(%d)", z); -+ input_report_key(mrstouchdevp->input, BTN_TOUCH, 0); -+ mrstouchdevp->pendown = false; -+ } -+ -+ xdiff = abs(x - mrstouchdevp->x); -+ ydiff = abs(y - mrstouchdevp->y); -+ -+ /* -+ if x and y values changes for XYMOVE_CNT readings it is considered -+ as stylus is moving. This is required to differentiate between stylus -+ movement and jitter -+ */ -+ if (x < MIN_X || x > MAX_X || y < MIN_Y || y > MAX_Y) { -+ /* Spurious values, release button if touched and return */ -+ if (mrstouchdevp->pendown) { -+ mrstouch_debug("BTN REL(%d)", z); -+ input_report_key(mrstouchdevp->input, BTN_TOUCH, 0); -+ mrstouchdevp->pendown = false; -+ } -+ return; -+ } else if (xdiff >= XMOVE_LIMIT || ydiff >= YMOVE_LIMIT) { -+ mrstouchdevp->x = x; -+ mrstouchdevp->y = y; -+ -+ input_report_abs(mrstouchdevp->input, ABS_X, x); -+ input_report_abs(mrstouchdevp->input, ABS_Y, y); -+ input_sync(mrstouchdevp->input); -+ } -+ -+ -+ if (!mrstouchdevp->pendown && z > TOUCH_PRESSURE) { -+ /* Pen touched, report button touch */ -+ mrstouch_debug("BTN TCH(%d, %d, %d)", x, y, z); -+ input_report_key(mrstouchdevp->input, BTN_TOUCH, 1); -+ mrstouchdevp->pendown = true; -+ } -+} -+ -+ -+/* Utility to start ADC, used by freescale handler */ -+static int pendet_mask(void) -+{ -+ int err = 0; -+ struct ipc_pmic_mod_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 1; -+ ipcbuf.pmic_mod_reg_data[1].register_address = PMIC_REG_MADCINT; -+ ipcbuf.pmic_mod_reg_data[1].bit_map = 0x02; -+ ipcbuf.pmic_mod_reg_data[1].value = 0x01; -+ -+ err = ipc_pmic_register_read_modify(&ipcbuf); -+ -+ return err; -+} -+ -+/* Utility to stop ADC, used by freescale handler */ -+static int pendet_umask(void) -+{ -+ int err = 0; -+ struct ipc_pmic_mod_reg_data ipcbuf; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 1; -+ ipcbuf.pmic_mod_reg_data[1].register_address = PMIC_REG_MADCINT; -+ ipcbuf.pmic_mod_reg_data[1].bit_map = 0x02; -+ ipcbuf.pmic_mod_reg_data[1].value = 0x0; -+ -+ err = ipc_pmic_register_read_modify(&ipcbuf); -+ -+ return err; -+} -+ -+/* Utility to read ADC, used by freescale handler */ -+static int mrstouch_pmic_fs_adc_read(struct mrstouch_dev *tsdev) -+{ -+ int err; -+ u16 x, y, z, result; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ result = PMIC_REG_ADCSNS0H + tsdev->asr; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 4; -+ ipcbuf.pmic_reg_data[0].register_address = result + 4; -+ ipcbuf.pmic_reg_data[1].register_address = result + 5; -+ ipcbuf.pmic_reg_data[2].register_address = result + 16; -+ ipcbuf.pmic_reg_data[3].register_address = result + 17; -+ -+ err = ipc_pmic_register_read(&ipcbuf); -+ if (err) -+ goto ipc_error; -+ -+ x = ipcbuf.pmic_reg_data[0].value << 3; /* Higher 7 bits */ -+ x |= ipcbuf.pmic_reg_data[1].value & 0x7; /* Lower 3 bits */ -+ x &= 0x3FF; -+ -+ y = ipcbuf.pmic_reg_data[2].value << 3; /* Higher 7 bits */ -+ y |= ipcbuf.pmic_reg_data[3].value & 0x7; /* Lower 3 bits */ -+ y &= 0x3FF; -+ -+ /* Read Z value */ -+ ipcbuf.num_entries = 2; -+ ipcbuf.pmic_reg_data[0].register_address = result + 28; -+ ipcbuf.pmic_reg_data[1].register_address = result + 29; -+ -+ err = ipc_pmic_register_read(&ipcbuf); -+ if (err) -+ goto ipc_error; -+ -+ z = ipcbuf.pmic_reg_data[0].value << 3; /* Higher 7 bits */ -+ z |= ipcbuf.pmic_reg_data[1].value & 0x7; /* Lower 3 bits */ -+ z &= 0x3FF; -+ -+#if defined(MRSTOUCH_PRINT_XYZP) -+ mrstouch_debug("X: %d, Y: %d, Z: %d", x, y, z); -+#endif -+ -+ if (z >= TOUCH_PRESSURE_FS) { -+ mrstouch_report_xy(x, y, TOUCH_PRESSURE - 1); /* Pen Removed */ -+ return TOUCH_PRESSURE - 1; -+ } else { -+ mrstouch_report_xy(x, y, TOUCH_PRESSURE + 1); /* Pen Touched */ -+ return TOUCH_PRESSURE + 1; -+ } -+ -+ return 0; -+ -+ipc_error: -+ printk(KERN_ERR "IPC Error: %s", __func__); -+ return -1; -+} -+ -+/* To handle free scale pmic pendet interrupt */ -+static int pmic0_pendet(void *data) -+{ -+ int err, count; -+ u16 chan; -+ unsigned int touched; -+ struct ipc_pmic_reg_data ipcbuf; -+ struct mrstouch_dev *tsdev = (struct mrstouch_dev *)data; -+ -+ chan = PMICADDR0 + tsdev->asr; -+ -+ ipcbuf.ioc = 1; -+ /* Set X BIAS */ -+ ipcbuf.num_entries = 5; -+ for (count = 0; count <= 3; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = 0x2A; -+ } -+ ipcbuf.pmic_reg_data[count].register_address = chan++; /* Dummy */ -+ ipcbuf.pmic_reg_data[count].value = 0; -+ -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ goto ipc_error; -+ -+ msleep(WAIT_ADC_COMPLETION); -+ -+ /* Set Y BIAS */ -+ ipcbuf.num_entries = 5; -+ for (count = 0; count <= 3; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = 0x4A; -+ } -+ ipcbuf.pmic_reg_data[count].register_address = chan++; /* Dummy */ -+ ipcbuf.pmic_reg_data[count].value = 0; -+ -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ goto ipc_error; -+ -+ msleep(WAIT_ADC_COMPLETION); -+ -+ /* Set Z BIAS */ -+ chan += 2; -+ ipcbuf.num_entries = 4; -+ for (count = 0; count <= 3; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = 0x8A; -+ } -+ -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ goto ipc_error; -+ -+ msleep(WAIT_ADC_COMPLETION); -+ -+ /*Read touch screen channels till pen removed -+ * Freescale reports constant value of z for all points -+ * z is high when screen is not touched and low when touched -+ * Map high z value to not touched and low z value to pen touched -+ */ -+ touched = mrstouch_pmic_fs_adc_read(tsdev); -+ while (touched > TOUCH_PRESSURE) { -+ touched = mrstouch_pmic_fs_adc_read(tsdev); -+ msleep(WAIT_ADC_COMPLETION); -+ } -+ -+ /* Clear all TS channels */ -+ chan = PMICADDR0 + tsdev->asr; -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 5; -+ for (count = 0; count <= 4; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = 0x0; -+ } -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ goto ipc_error; -+ -+ for (count = 0; count <= 4; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = 0x0; -+ } -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ goto ipc_error; -+ -+ chan += 2; -+ for (count = 0; count <= 4; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = 0x0; -+ } -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ goto ipc_error; -+ -+ return 0; -+ -+ipc_error: -+ printk(KERN_ERR "IPC Error: %s", __func__); -+ return -1; -+} -+ -+ -+/* To enable 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 err, count; -+ u16 chan, start; -+ struct ipc_pmic_reg_data ipcbuf; -+ -+ chan = PMICADDR0 + offset; -+ start = MRST_TS_CHAN10; -+ -+ ipcbuf.ioc = 1; -+ ipcbuf.num_entries = 4; -+ -+ for (count = 0; count <= 3; count++) { -+ ipcbuf.pmic_reg_data[count].register_address = chan++; -+ ipcbuf.pmic_reg_data[count].value = bias | (start + count); -+ } -+ -+ err = ipc_pmic_register_write(&ipcbuf, 1); -+ if (err) -+ return -1; -+ -+ return 0; -+} -+ -+/* To read touch screen channel values */ -+static int mrstouch_adc_read(struct mrstouch_dev *tsdev) -+{ -+ int err; -+ u16 xp, xm, yp, ym, zp, zm; -+ -+ /* configure Y bias for X channels */ -+ err = mrstouch_ts_bias_set(tsdev->asr, 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, &xp, &xm); -+ if (err) -+ goto ipc_error; -+ -+ /* configure x bias for y channels */ -+ err = mrstouch_ts_bias_set(tsdev->asr, 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, &yp, &ym); -+ if (err) -+ goto ipc_error; -+ -+ /* configure z bias for x and y channels */ -+ err = mrstouch_ts_bias_set(tsdev->asr, 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, &zp, &zm); -+ if (err) -+ goto ipc_error; -+ -+#if defined(MRSTOUCH_PRINT_XYZP) -+ printk(KERN_INFO "X+: %d, Y+: %d, Z+: %d\n", xp, yp, zp); -+#endif -+ -+#if defined(MRSTOUCH_PRINT_XYZM) -+ printk(KERN_INFO "X-: %d, Y-: %d, Z-: %d\n", xm, ym, zm); -+#endif -+ -+ mrstouch_report_xy(xp, yp, zp); /* report x and y to eventX */ -+ -+ return zp; -+ -+ipc_error: -+ printk(KERN_ERR "IPC Error: %s", __func__); -+ return -1; -+} -+ -+/* PENDET interrupt handler function for NEC and MAXIM */ -+static void pmic12_pendet(void *data) -+{ -+ unsigned int touched; -+ struct mrstouch_dev *tsdev = (struct mrstouch_dev *)data; -+ -+ /* read touch screen channels till pen removed */ -+ touched = mrstouch_adc_read(tsdev); -+ while (touched > TOUCH_PRESSURE) { -+ msleep(WAIT_ADC_COMPLETION); -+ touched = mrstouch_adc_read(tsdev); -+ } -+} -+ -+/* Handler to process PENDET interrupt */ -+int mrstouch_pendet(void *data) -+{ -+ struct mrstouch_dev *tsdev = (struct mrstouch_dev *)data; -+ while (1) { -+ /* Wait for PENDET interrupt */ -+ if (down_interruptible(&tsdev->lock)) { -+ msleep(WAIT_ADC_COMPLETION); -+ continue; -+ } -+ -+ if (tsdev->busy) -+ return 0; -+ -+ tsdev->busy = true; -+ -+ if (mrstouchdevp->vendor == PMIC_VENDOR_NEC || -+ mrstouchdevp->vendor == PMIC_VENDOR_MAXIM) { -+ /* PENDET must be disabled in NEC before reading ADC */ -+ pendet_enable(false); /* Disbale PENDET */ -+ pmic12_pendet(mrstouchdevp); -+ pendet_enable(true); /*Enable PENDET */ -+ } else if (mrstouchdevp->vendor == PMIC_VENDOR_FS) { -+ pendet_umask(); /* Stop ADC */ -+ pmic0_pendet(mrstouchdevp); -+ pendet_mask(); /* Stop ADC */ -+ } else -+ printk(KERN_ERR "Unknown PMIC, Not supported\n"); -+ -+ tsdev->busy = false; -+ -+ } -+ return 0; -+} -+ -+/* PENDET interrupt handler */ -+static irqreturn_t pendet_intr_handler(int irq, void *handle) -+{ -+ struct mrstouch_dev *tsdev = (struct mrstouch_dev *)handle; -+ -+ up(&tsdev->lock); -+ return IRQ_HANDLED; -+} -+ -+/* Intializes input device and registers with input subsystem */ -+static int ts_input_dev_init(struct mrstouch_dev *tsdev, struct spi_device *spi) -+{ -+ int err = 0; -+ -+ mrstouch_debug("%s", __func__); -+ -+ tsdev->input = input_allocate_device(); -+ if (!tsdev->input) { -+ mrstouch_error("%s", "Input dev allocation failed"); -+ return -1; -+ } -+ -+ tsdev->input->name = "mrst_touchscreen"; -+ snprintf(tsdev->phys, sizeof(tsdev->phys), -+ "%s/input0", dev_name(&spi->dev)); -+ tsdev->input->phys = tsdev->phys; -+ tsdev->input->dev.parent = &spi->dev; -+ -+ tsdev->input->id.vendor = tsdev->vendor; -+ tsdev->input->id.version = tsdev->rev; -+ -+ tsdev->input->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); -+ tsdev->input->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH); -+ -+ input_set_abs_params(tsdev->input, ABS_X, MIN_X, MIN_Y, 0, 0); -+ input_set_abs_params(tsdev->input, ABS_Y, MIN_X, MIN_Y, 0, 0); -+ -+ err = input_register_device(tsdev->input); -+ if (err) { -+ mrstouch_error("%s", "Input dev registration failed"); -+ input_free_device(tsdev->input); -+ return -1; -+ } -+ -+ mrstouch_debug("%s", "mrstouch initialized"); -+ -+ return 0; -+ -+} -+ -+/* Probe function for touch screen driver */ -+static int __devinit mrstouch_probe(struct spi_device *mrstouch_spi) -+{ -+ int err; -+ unsigned int myirq; -+ struct mrstouch_dev *tsdev; -+ -+ mrstouch_debug("%s(%p)", __func__, mrstouch_spi); -+ -+ mrstouchdevp = NULL; -+ myirq = mrstouch_spi->irq; -+ -+ if (!mrstouch_spi->irq) { -+ mrstouch_error("%s(%d)", "No IRQ", myirq); -+ return -1; -+ } -+ -+ tsdev = kzalloc(sizeof(struct mrstouch_dev), GFP_KERNEL); -+ if (!tsdev) { -+ mrstouch_error("%s", "ERROR: Memory failure"); -+ return -ENOMEM; -+ } -+ -+ tsdev->irq = myirq; -+ mrstouchdevp = tsdev; -+ -+ if (mrstouch_adc_init(tsdev) != 0) { -+ mrstouch_error("%s", "ADC init failed"); -+ goto mrstouch_err_free_mem; -+ } -+ -+ dev_set_drvdata(&mrstouch_spi->dev, tsdev); -+ tsdev->spi = mrstouch_spi; -+ -+ err = ts_input_dev_init(tsdev, mrstouch_spi); -+ if (err != 0) { -+ mrstouch_error("%s", "ts_input_dev_init failed"); -+ goto mrstouch_err_free_mem; -+ } -+ -+ sema_init(&tsdev->lock, 1); -+ if (down_interruptible(&tsdev->lock)) { -+ mrstouch_error("%s", "tsdev->lock Error"); -+ goto mrstouch_err_free_mem; -+ } -+ -+ mrstouch_debug("Requesting IRQ-%d", myirq); -+ err = request_irq(myirq, pendet_intr_handler, -+ 0, "mrstouch", tsdev); -+ if (err) { -+ mrstouch_error("IRQ Request Failed - %d", err); -+ goto mrstouch_err_free_mem; -+ } -+ -+ tsdev->pendet_thrd = kthread_run(mrstouch_pendet, -+ (void *)tsdev, "pendet handler"); -+ if (IS_ERR(tsdev->pendet_thrd)) { -+ dev_err(&tsdev->spi->dev, "kthread_run failed \n"); -+ goto mrstouch_err_free_mem; -+ } -+ -+ mrstouch_debug("%s", "Driver initialized"); -+ -+ return 0; -+ -+ mrstouch_err_free_mem: -+ kfree(tsdev); -+ return -1; -+} -+ -+static int mrstouch_suspend(struct spi_device *spi, pm_message_t msg) -+{ -+ mrstouch_debug("%s", __func__); -+ mrstouchdevp->suspended = 1; -+ return 0; -+} -+ -+static int mrstouch_resume(struct spi_device *spi) -+{ -+ mrstouch_debug("%s", __func__); -+ mrstouchdevp->suspended = 0; -+ return 0; -+} -+ -+static int mrstouch_remove(struct spi_device *spi) -+{ -+ mrstouch_debug("%s", __func__); -+ free_irq(mrstouchdevp->irq, mrstouchdevp); -+ input_unregister_device(mrstouchdevp->input); -+ input_free_device(mrstouchdevp->input); -+ kfree(mrstouchdevp); -+ if (mrstouchdevp->pendet_thrd) -+ kthread_stop(mrstouchdevp->pendet_thrd); -+ return 0; -+} -+ -+static struct spi_driver mrstouch_driver = { -+ .driver = { -+ .name = "pmic_touch", -+ .bus = &spi_bus_type, -+ .owner = THIS_MODULE, -+ }, -+ .probe = mrstouch_probe, -+ .suspend = mrstouch_suspend, -+ .resume = mrstouch_resume, -+ .remove = mrstouch_remove, -+}; -+ -+static int __init mrstouch_module_init(void) -+{ -+ int err; -+ -+ mrstouch_debug("%s", __func__); -+ err = spi_register_driver(&mrstouch_driver); -+ if (err) { -+ mrstouch_debug("%s(%d)", "SPI PENDET failed", err); -+ return -1; -+ } -+ -+ return 0; -+} -+ -+static void __exit mrstouch_module_exit(void) -+{ -+ mrstouch_debug("%s", __func__); -+ spi_unregister_driver(&mrstouch_driver); -+ return; -+} -+ -+module_init(mrstouch_module_init); -+module_exit(mrstouch_module_exit); --- -1.6.2.5 - |