diff options
Diffstat (limited to 'packages/linux/linux-rp-2.6.23/wm97xx-lg13-r0.patch')
| -rw-r--r-- | packages/linux/linux-rp-2.6.23/wm97xx-lg13-r0.patch | 2899 |
1 files changed, 0 insertions, 2899 deletions
diff --git a/packages/linux/linux-rp-2.6.23/wm97xx-lg13-r0.patch b/packages/linux/linux-rp-2.6.23/wm97xx-lg13-r0.patch index b029ccc066..c918c5daff 100644 --- a/packages/linux/linux-rp-2.6.23/wm97xx-lg13-r0.patch +++ b/packages/linux/linux-rp-2.6.23/wm97xx-lg13-r0.patch @@ -2897,2902 +2897,3 @@ Index: linux-2.6.17/include/linux/wm97xx.h + +extern struct bus_type wm97xx_bus_type; +#endif -Index: linux-2.6.17/drivers/input/touchscreen/Kconfig -=================================================================== ---- linux-2.6.17.orig/drivers/input/touchscreen/Kconfig 2006-09-19 20:35:35.060495500 +0200 -+++ linux-2.6.17/drivers/input/touchscreen/Kconfig 2006-09-19 20:36:47.965051750 +0200 -@@ -121,4 +121,57 @@ config TOUCHSCREEN_TSC2101 - To compile this driver as a module, choose M here: the - module will be called ads7846_ts. - -+config TOUCHSCREEN_WM97XX -+ tristate "Support for WM97xx AC97 touchscreen controllers" -+ depends SND_AC97_BUS -+ -+choice -+ prompt "WM97xx codec type" -+ -+config TOUCHSCREEN_WM9705 -+ bool "WM9705 Touchscreen interface support" -+ depends on TOUCHSCREEN_WM97XX -+ help -+ Say Y here if you have the wm9705 touchscreen. -+ -+ If unsure, say N. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called wm9705. -+ -+config TOUCHSCREEN_WM9712 -+ bool "WM9712 Touchscreen interface support" -+ depends on TOUCHSCREEN_WM97XX -+ help -+ Say Y here if you have the wm9712 touchscreen. -+ -+ If unsure, say N. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called wm9712. -+ -+config TOUCHSCREEN_WM9713 -+ bool "WM9713 Touchscreen interface support" -+ depends on TOUCHSCREEN_WM97XX -+ help -+ Say Y here if you have the wm9713 touchscreen. -+ -+ If unsure, say N. -+ -+ To compile this driver as a module, choose M here: the -+ module will be called wm9713. -+ -+endchoice -+ -+config TOUCHSCREEN_WM97XX_PXA -+ tristate "WM97xx PXA accelerated touch" -+ depends on TOUCHSCREEN_WM97XX && ARCH_PXA -+ help -+ Say Y here for continuous mode touch on the PXA -+ -+ If unsure, say N -+ -+ To compile this driver as a module, choose M here: the -+ module will be called pxa-wm97xx -+ - endif -Index: linux-2.6.17/drivers/input/touchscreen/Makefile -=================================================================== ---- linux-2.6.17.orig/drivers/input/touchscreen/Makefile 2006-09-19 20:35:35.072496250 +0200 -+++ linux-2.6.17/drivers/input/touchscreen/Makefile 2006-09-19 20:37:40.540337500 +0200 -@@ -4,6 +4,8 @@ - - # Each configuration option enables a list of files. - -+wm97xx-ts-objs := wm97xx-core.o -+ - obj-$(CONFIG_TOUCHSCREEN_ADS7846) += ads7846.o - obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o - obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o -@@ -13,3 +15,16 @@ obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtou - obj-$(CONFIG_TOUCHSCREEN_MK712) += mk712.o - obj-$(CONFIG_TOUCHSCREEN_HP600) += hp680_ts_input.o - obj-$(CONFIG_TOUCHSCREEN_TSC2101) += tsc2101_ts.o -+obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o -+obj-$(CONFIG_TOUCHSCREEN_WM97XX_PXA) += pxa-wm97xx.o -+ -+ifeq ($(CONFIG_TOUCHSCREEN_WM9713),y) -+wm97xx-ts-objs += wm9713.o -+endif -+ -+ifeq ($(CONFIG_TOUCHSCREEN_WM9712),y) -+wm97xx-ts-objs += wm9712.o -+endif -+ifeq ($(CONFIG_TOUCHSCREEN_WM9705),y) -+wm97xx-ts-objs += wm9705.o -+endif -Index: linux-2.6.17/drivers/input/touchscreen/pxa-wm97xx.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.17/drivers/input/touchscreen/pxa-wm97xx.c 2006-09-19 20:36:47.965051750 +0200 -@@ -0,0 +1,289 @@ -+/* -+ * pxa-wm97xx.c -- pxa-wm97xx Continuous Touch screen driver for -+ * Wolfson WM97xx AC97 Codecs. -+ * -+ * Copyright 2004 Wolfson Microelectronics PLC. -+ * Author: Liam Girdwood -+ * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com -+ * Parts Copyright : Ian Molton <spyro@f2s.com> -+ * Andrew Zabolotny <zap@homelink.ru> -+ * -+ * 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. -+ * -+ * Notes: -+ * This is a wm97xx extended touch driver to capture touch -+ * data in a continuous manner on the Intel XScale archictecture -+ * -+ * Features: -+ * - codecs supported:- WM9705, WM9712, WM9713 -+ * - processors supported:- Intel XScale PXA25x, PXA26x, PXA27x -+ * -+ * Revision history -+ * 18th Aug 2004 Initial version. -+ * 26th Jul 2005 Improved continous read back and added FIFO flushing. -+ * 06th Sep 2005 Mike Arthur <linux@wolfsonmicro.com> -+ * Moved to using the wm97xx bus -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/version.h> -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/delay.h> -+#include <linux/irq.h> -+#include <linux/wm97xx.h> -+#include <asm/io.h> -+#include <asm/arch/pxa-regs.h> -+ -+#define VERSION "0.13" -+ -+struct continuous { -+ u16 id; /* codec id */ -+ u8 code; /* continuous code */ -+ u8 reads; /* number of coord reads per read cycle */ -+ u32 speed; /* number of coords per second */ -+}; -+ -+#define WM_READS(sp) ((sp / HZ) + 1) -+ -+static const struct continuous cinfo[] = { -+ {WM9705_ID2, 0, WM_READS(94), 94}, -+ {WM9705_ID2, 1, WM_READS(188), 188}, -+ {WM9705_ID2, 2, WM_READS(375), 375}, -+ {WM9705_ID2, 3, WM_READS(750), 750}, -+ {WM9712_ID2, 0, WM_READS(94), 94}, -+ {WM9712_ID2, 1, WM_READS(188), 188}, -+ {WM9712_ID2, 2, WM_READS(375), 375}, -+ {WM9712_ID2, 3, WM_READS(750), 750}, -+ {WM9713_ID2, 0, WM_READS(94), 94}, -+ {WM9713_ID2, 1, WM_READS(120), 120}, -+ {WM9713_ID2, 2, WM_READS(154), 154}, -+ {WM9713_ID2, 3, WM_READS(188), 188}, -+}; -+ -+/* continuous speed index */ -+static int sp_idx = 0; -+static u16 last = 0, tries = 0; -+ -+/* -+ * Pen sampling frequency (Hz) in continuous mode. -+ */ -+static int cont_rate = 200; -+module_param(cont_rate, int, 0); -+MODULE_PARM_DESC(cont_rate, "Sampling rate in continuous mode (Hz)"); -+ -+/* -+ * Pen down detection. -+ * -+ * This driver can either poll or use an interrupt to indicate a pen down -+ * event. If the irq request fails then it will fall back to polling mode. -+ */ -+static int pen_int = 1; -+module_param(pen_int, int, 0); -+MODULE_PARM_DESC(pen_int, "Pen down detection (1 = interrupt, 0 = polling)"); -+ -+/* -+ * Pressure readback. -+ * -+ * Set to 1 to read back pen down pressure -+ */ -+static int pressure = 0; -+module_param(pressure, int, 0); -+MODULE_PARM_DESC(pressure, "Pressure readback (1 = pressure, 0 = no pressure)"); -+ -+/* -+ * AC97 touch data slot. -+ * -+ * Touch screen readback data ac97 slot -+ */ -+static int ac97_touch_slot = 5; -+module_param(ac97_touch_slot, int, 0); -+MODULE_PARM_DESC(ac97_touch_slot, "Touch screen data slot AC97 number"); -+ -+ -+/* flush AC97 slot 5 FIFO on pxa machines */ -+#ifdef CONFIG_PXA27x -+void wm97xx_acc_pen_up (struct wm97xx* wm) -+{ -+ set_current_state(TASK_INTERRUPTIBLE); -+ schedule_timeout(1); -+ -+ while (MISR & (1 << 2)) -+ MODR; -+} -+#else -+void wm97xx_acc_pen_up (struct wm97xx* wm) -+{ -+ int count = 16; -+ set_current_state(TASK_INTERRUPTIBLE); -+ schedule_timeout(1); -+ -+ while (count < 16) { -+ MODR; -+ count--; -+ } -+} -+#endif -+ -+int wm97xx_acc_pen_down (struct wm97xx* wm) -+{ -+ u16 x, y, p = 0x100 | WM97XX_ADCSEL_PRES; -+ int reads = 0; -+ -+ /* data is never immediately available after pen down irq */ -+ set_current_state(TASK_INTERRUPTIBLE); -+ schedule_timeout(1); -+ -+ if (tries > 5){ -+ tries = 0; -+ return RC_PENUP; -+ } -+ -+ x = MODR; -+ if (x == last) { -+ tries++; -+ return RC_AGAIN; -+ } -+ last = x; -+ do { -+ if (reads) -+ x= MODR; -+ y= MODR; -+ if (pressure) -+ p = MODR; -+ -+ /* are samples valid */ -+ if ((x & 0x7000) != WM97XX_ADCSEL_X || -+ (y & 0x7000) != WM97XX_ADCSEL_Y || -+ (p & 0x7000) != WM97XX_ADCSEL_PRES) -+ goto up; -+ -+ /* coordinate is good */ -+ tries = 0; -+ //printk("x %x y %x p %x\n", x,y,p); -+ input_report_abs (wm->input_dev, ABS_X, x & 0xfff); -+ input_report_abs (wm->input_dev, ABS_Y, y & 0xfff); -+ input_report_abs (wm->input_dev, ABS_PRESSURE, p & 0xfff); -+ input_sync (wm->input_dev); -+ reads++; -+ } while (reads < cinfo[sp_idx].reads); -+up: -+ return RC_PENDOWN | RC_AGAIN; -+} -+ -+int wm97xx_acc_startup(struct wm97xx* wm) -+{ -+ int idx = 0; -+ -+ /* check we have a codec */ -+ if (wm->ac97 == NULL) -+ return -ENODEV; -+ -+ /* Go you big red fire engine */ -+ for (idx = 0; idx < ARRAY_SIZE(cinfo); idx++) { -+ if (wm->id != cinfo[idx].id) -+ continue; -+ sp_idx = idx; -+ if (cont_rate <= cinfo[idx].speed) -+ break; -+ } -+ wm->acc_rate = cinfo[sp_idx].code; -+ wm->acc_slot = ac97_touch_slot; -+ printk(KERN_INFO "pxa2xx accelerated touchscreen driver, %d samples (sec)\n", -+ cinfo[sp_idx].speed); -+ -+ /* codec specific irq config */ -+ if (pen_int) { -+ switch (wm->id) { -+ case WM9705_ID2: -+ wm->pen_irq = IRQ_GPIO(4); -+ set_irq_type(IRQ_GPIO(4), IRQT_BOTHEDGE); -+ break; -+ case WM9712_ID2: -+ case WM9713_ID2: -+ /* enable pen down interrupt */ -+ /* use PEN_DOWN GPIO 13 to assert IRQ on GPIO line 2 */ -+ wm->pen_irq = MAINSTONE_AC97_IRQ; -+ wm97xx_config_gpio(wm, WM97XX_GPIO_13, WM97XX_GPIO_IN, -+ WM97XX_GPIO_POL_HIGH, WM97XX_GPIO_STICKY, WM97XX_GPIO_WAKE); -+ wm97xx_config_gpio(wm, WM97XX_GPIO_2, WM97XX_GPIO_OUT, -+ WM97XX_GPIO_POL_HIGH, WM97XX_GPIO_NOTSTICKY, WM97XX_GPIO_NOWAKE); -+ break; -+ default: -+ printk(KERN_WARNING "pen down irq not supported on this device\n"); -+ pen_int = 0; -+ break; -+ } -+ } -+ -+ return 0; -+} -+ -+void wm97xx_acc_shutdown(struct wm97xx* wm) -+{ -+ /* codec specific deconfig */ -+ if (pen_int) { -+ switch (wm->id & 0xffff) { -+ case WM9705_ID2: -+ wm->pen_irq = 0; -+ break; -+ case WM9712_ID2: -+ case WM9713_ID2: -+ /* disable interrupt */ -+ wm->pen_irq = 0; -+ break; -+ } -+ } -+} -+ -+static struct wm97xx_mach_ops pxa_mach_ops = { -+ .acc_enabled = 1, -+ .acc_pen_up = wm97xx_acc_pen_up, -+ .acc_pen_down = wm97xx_acc_pen_down, -+ .acc_startup = wm97xx_acc_startup, -+ .acc_shutdown = wm97xx_acc_shutdown, -+}; -+ -+int pxa_wm97xx_probe(struct device *dev) -+{ -+ struct wm97xx *wm = dev->driver_data; -+ return wm97xx_register_mach_ops (wm, &pxa_mach_ops); -+} -+ -+int pxa_wm97xx_remove(struct device *dev) -+{ -+ struct wm97xx *wm = dev->driver_data; -+ wm97xx_unregister_mach_ops (wm); -+ return 0; -+} -+ -+static struct device_driver pxa_wm97xx_driver = { -+ .name = "wm97xx-touchscreen", -+ .bus = &wm97xx_bus_type, -+ .owner = THIS_MODULE, -+ .probe = pxa_wm97xx_probe, -+ .remove = pxa_wm97xx_remove -+}; -+ -+static int __init pxa_wm97xx_init(void) -+{ -+ return driver_register(&pxa_wm97xx_driver); -+} -+ -+static void __exit pxa_wm97xx_exit(void) -+{ -+ driver_unregister(&pxa_wm97xx_driver); -+} -+ -+module_init(pxa_wm97xx_init); -+module_exit(pxa_wm97xx_exit); -+ -+/* Module information */ -+MODULE_AUTHOR("Liam Girdwood <liam.girdwood@wolfsonmicro.com>"); -+MODULE_DESCRIPTION("wm97xx continuous touch driver for pxa2xx"); -+MODULE_LICENSE("GPL"); -Index: linux-2.6.17/drivers/input/touchscreen/wm9705.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.17/drivers/input/touchscreen/wm9705.c 2006-09-19 20:36:47.969052000 +0200 -@@ -0,0 +1,360 @@ -+/* -+ * wm9705.c -- Codec driver for Wolfson WM9705 AC97 Codec. -+ * -+ * Copyright 2003, 2004, 2005, 2006 Wolfson Microelectronics PLC. -+ * Author: Liam Girdwood -+ * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com -+ * Parts Copyright : Ian Molton <spyro@f2s.com> -+ * Andrew Zabolotny <zap@homelink.ru> -+ * Russell King <rmk@arm.linux.org.uk> -+ * -+ * 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. -+ * -+ * Revision history -+ * 6th Sep 2006 Mike Arthur <linux@wolfsonmicro.com> -+ * Added pre and post sample calls. -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/version.h> -+#include <linux/kernel.h> -+#include <linux/input.h> -+#include <linux/delay.h> -+#include <linux/bitops.h> -+#include <linux/wm97xx.h> -+ -+#define TS_NAME "wm97xx" -+#define WM9705_VERSION "0.62" -+#define DEFAULT_PRESSURE 0xb0c0 -+ -+/* -+ * Debug -+ */ -+#if 0 -+#define dbg(format, arg...) printk(KERN_DEBUG TS_NAME ": " format "\n" , ## arg) -+#else -+#define dbg(format, arg...) -+#endif -+#define err(format, arg...) printk(KERN_ERR TS_NAME ": " format "\n" , ## arg) -+#define info(format, arg...) printk(KERN_INFO TS_NAME ": " format "\n" , ## arg) -+#define warn(format, arg...) printk(KERN_WARNING TS_NAME ": " format "\n" , ## arg) -+ -+/* -+ * Module parameters -+ */ -+ -+/* -+ * Set current used for pressure measurement. -+ * -+ * Set pil = 2 to use 400uA -+ * pil = 1 to use 200uA and -+ * pil = 0 to disable pressure measurement. -+ * -+ * This is used to increase the range of values returned by the adc -+ * when measureing touchpanel pressure. -+ */ -+static int pil = 0; -+module_param(pil, int, 0); -+MODULE_PARM_DESC(pil, "Set current used for pressure measurement."); -+ -+/* -+ * Set threshold for pressure measurement. -+ * -+ * Pen down pressure below threshold is ignored. -+ */ -+static int pressure = DEFAULT_PRESSURE & 0xfff; -+module_param(pressure, int, 0); -+MODULE_PARM_DESC(pressure, "Set threshold for pressure measurement."); -+ -+/* -+ * Set adc sample delay. -+ * -+ * For accurate touchpanel measurements, some settling time may be -+ * required between the switch matrix applying a voltage across the -+ * touchpanel plate and the ADC sampling the signal. -+ * -+ * This delay can be set by setting delay = n, where n is the array -+ * position of the delay in the array delay_table below. -+ * Long delays > 1ms are supported for completeness, but are not -+ * recommended. -+ */ -+static int delay = 4; -+module_param(delay, int, 0); -+MODULE_PARM_DESC(delay, "Set adc sample delay."); -+ -+/* -+ * Pen detect comparator threshold. -+ * -+ * 0 to Vmid in 15 steps, 0 = use zero power comparator with Vmid threshold -+ * i.e. 1 = Vmid/15 threshold -+ * 15 = Vmid/1 threshold -+ * -+ * Adjust this value if you are having problems with pen detect not -+ * detecting any down events. -+ */ -+static int pdd = 8; -+module_param(pdd, int, 0); -+MODULE_PARM_DESC(pdd, "Set pen detect comparator threshold"); -+ -+/* -+ * Set adc mask function. -+ * -+ * Sources of glitch noise, such as signals driving an LCD display, may feed -+ * through to the touch screen plates and affect measurement accuracy. In -+ * order to minimise this, a signal may be applied to the MASK pin to delay or -+ * synchronise the sampling. -+ * -+ * 0 = No delay or sync -+ * 1 = High on pin stops conversions -+ * 2 = Edge triggered, edge on pin delays conversion by delay param (above) -+ * 3 = Edge triggered, edge on pin starts conversion after delay param -+ */ -+static int mask = 0; -+module_param(mask, int, 0); -+MODULE_PARM_DESC(mask, "Set adc mask function."); -+ -+/* -+ * ADC sample delay times in uS -+ */ -+static const int delay_table[] = { -+ 21, // 1 AC97 Link frames -+ 42, // 2 -+ 84, // 4 -+ 167, // 8 -+ 333, // 16 -+ 667, // 32 -+ 1000, // 48 -+ 1333, // 64 -+ 2000, // 96 -+ 2667, // 128 -+ 3333, // 160 -+ 4000, // 192 -+ 4667, // 224 -+ 5333, // 256 -+ 6000, // 288 -+ 0 // No delay, switch matrix always on -+}; -+ -+/* -+ * Delay after issuing a POLL command. -+ * -+ * The delay is 3 AC97 link frames + the touchpanel settling delay -+ */ -+static inline void poll_delay(int d) -+{ -+ udelay (3 * AC97_LINK_FRAME + delay_table [d]); -+} -+ -+/* -+ * set up the physical settings of the WM9705 -+ */ -+static void init_wm9705_phy(struct wm97xx* wm) -+{ -+ u16 dig1 = 0, dig2 = WM97XX_RPR; -+ -+ /* -+ * mute VIDEO and AUX as they share X and Y touchscreen -+ * inputs on the WM9705 -+ */ -+ wm97xx_reg_write(wm, AC97_AUX, 0x8000); -+ wm97xx_reg_write(wm, AC97_VIDEO, 0x8000); -+ -+ /* touchpanel pressure current*/ -+ if (pil == 2) { -+ dig2 |= WM9705_PIL; -+ dbg("setting pressure measurement current to 400uA."); -+ } else if (pil) -+ dbg("setting pressure measurement current to 200uA."); -+ if(!pil) -+ pressure = 0; -+ -+ /* polling mode sample settling delay */ -+ if (delay!=4) { -+ if (delay < 0 || delay > 15) { -+ dbg("supplied delay out of range."); -+ delay = 4; -+ } -+ } -+ dig1 &= 0xff0f; -+ dig1 |= WM97XX_DELAY(delay); -+ dbg("setting adc sample delay to %d u Secs.", delay_table[delay]); -+ -+ /* WM9705 pdd */ -+ dig2 |= (pdd & 0x000f); -+ dbg("setting pdd to Vmid/%d", 1 - (pdd & 0x000f)); -+ -+ /* mask */ -+ dig2 |= ((mask & 0x3) << 4); -+ -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); -+} -+ -+static int wm9705_digitiser_ioctl(struct wm97xx* wm, int cmd) -+{ -+ switch(cmd) { -+ case WM97XX_DIG_START: -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig[2] | WM97XX_PRP_DET_DIG); -+ wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */ -+ break; -+ case WM97XX_DIG_STOP: -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig[2] & ~WM97XX_PRP_DET_DIG); -+ break; -+ case WM97XX_AUX_PREPARE: -+ memcpy(wm->dig_save, wm->dig, sizeof(wm->dig)); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, 0); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, WM97XX_PRP_DET_DIG); -+ break; -+ case WM97XX_DIG_RESTORE: -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, wm->dig_save[1]); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig_save[2]); -+ break; -+ case WM97XX_PHY_INIT: -+ init_wm9705_phy(wm); -+ break; -+ default: -+ return -EINVAL; -+ } -+ return 0; -+} -+ -+static inline int is_pden (struct wm97xx* wm) -+{ -+ return wm->dig[2] & WM9705_PDEN; -+} -+ -+/* -+ * Read a sample from the WM9705 adc in polling mode. -+ */ -+static int wm9705_poll_sample (struct wm97xx* wm, int adcsel, int *sample) -+{ -+ int timeout = 5 * delay; -+ -+ if (!wm->pen_probably_down) { -+ u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (!(data & WM97XX_PEN_DOWN)) -+ return RC_PENUP; -+ wm->pen_probably_down = 1; -+ } -+ -+ /* set up digitiser */ -+ if (adcsel & 0x8000) -+ adcsel = ((adcsel & 0x7fff) + 3) << 12; -+ -+ if (wm->mach_ops && wm->mach_ops->pre_sample) -+ wm->mach_ops->pre_sample(adcsel); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, adcsel | WM97XX_POLL | WM97XX_DELAY(delay)); -+ -+ /* wait 3 AC97 time slots + delay for conversion */ -+ poll_delay (delay); -+ -+ /* wait for POLL to go low */ -+ while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL) && timeout) { -+ udelay(AC97_LINK_FRAME); -+ timeout--; -+ } -+ -+ if (timeout <= 0) { -+ /* If PDEN is set, we can get a timeout when pen goes up */ -+ if (is_pden(wm)) -+ wm->pen_probably_down = 0; -+ else -+ dbg ("adc sample timeout"); -+ return RC_PENUP; -+ } -+ -+ *sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (wm->mach_ops && wm->mach_ops->post_sample) -+ wm->mach_ops->post_sample(adcsel); -+ -+ /* check we have correct sample */ -+ if ((*sample & WM97XX_ADCSEL_MASK) != adcsel) { -+ dbg ("adc wrong sample, read %x got %x", adcsel, -+ *sample & WM97XX_ADCSEL_MASK); -+ return RC_PENUP; -+ } -+ -+ if (!(*sample & WM97XX_PEN_DOWN)) { -+ wm->pen_probably_down = 0; -+ return RC_PENUP; -+ } -+ -+ return RC_VALID; -+} -+ -+/* -+ * Sample the WM9705 touchscreen in polling mode -+ */ -+static int wm9705_poll_touch(struct wm97xx* wm, struct wm97xx_data *data) -+{ -+ int rc; -+ -+ if ((rc = wm9705_poll_sample(wm, WM97XX_ADCSEL_X, &data->x)) != RC_VALID) -+ return rc; -+ if ((rc = wm9705_poll_sample(wm, WM97XX_ADCSEL_Y, &data->y)) != RC_VALID) -+ return rc; -+ if (pil) { -+ if ((rc = wm9705_poll_sample(wm, WM97XX_ADCSEL_PRES, &data->p)) != RC_VALID) -+ return rc; -+ } else -+ data->p = DEFAULT_PRESSURE; -+ -+ return RC_VALID; -+} -+ -+/* -+ * Enable WM9705 continuous mode, i.e. touch data is streamed across an AC97 slot -+ */ -+static int wm9705_acc_enable (struct wm97xx* wm, int enable) -+{ -+ u16 dig1, dig2; -+ int ret = 0; -+ -+ dig1 = wm->dig[1]; -+ dig2 = wm->dig[2]; -+ -+ if (enable) { -+ /* continous mode */ -+ if (wm->mach_ops->acc_startup && (ret = wm->mach_ops->acc_startup(wm)) < 0) -+ return ret; -+ dig1 &= ~(WM97XX_CM_RATE_MASK | WM97XX_ADCSEL_MASK | -+ WM97XX_DELAY_MASK | WM97XX_SLT_MASK); -+ dig1 |= WM97XX_CTC | WM97XX_COO | WM97XX_SLEN | -+ WM97XX_DELAY (delay) | -+ WM97XX_SLT (wm->acc_slot) | -+ WM97XX_RATE (wm->acc_rate); -+ if (pil) -+ dig1 |= WM97XX_ADCSEL_PRES; -+ dig2 |= WM9705_PDEN; -+ } else { -+ dig1 &= ~(WM97XX_CTC | WM97XX_COO | WM97XX_SLEN); -+ dig2 &= ~WM9705_PDEN; -+ if (wm->mach_ops->acc_shutdown) -+ wm->mach_ops->acc_shutdown(wm); -+ } -+ -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); -+ return ret; -+} -+ -+struct wm97xx_codec_drv wm97xx_codec = { -+ .id = WM9705_ID2, -+ .name = "wm9705", -+ .poll_sample = wm9705_poll_sample, -+ .poll_touch = wm9705_poll_touch, -+ .acc_enable = wm9705_acc_enable, -+ .digitiser_ioctl = wm9705_digitiser_ioctl, -+}; -+ -+EXPORT_SYMBOL_GPL(wm97xx_codec); -+ -+/* Module information */ -+MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); -+MODULE_DESCRIPTION("WM9705 Touch Screen Driver"); -+MODULE_LICENSE("GPL"); -Index: linux-2.6.17/drivers/input/touchscreen/wm9712.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.17/drivers/input/touchscreen/wm9712.c 2006-09-19 20:36:47.969052000 +0200 -@@ -0,0 +1,464 @@ -+/* -+ * wm9712.c -- Codec driver for Wolfson WM9712 AC97 Codecs. -+ * -+ * Copyright 2003, 2004, 2005, 2006 Wolfson Microelectronics PLC. -+ * Author: Liam Girdwood -+ * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com -+ * Parts Copyright : Ian Molton <spyro@f2s.com> -+ * Andrew Zabolotny <zap@homelink.ru> -+ * Russell King <rmk@arm.linux.org.uk> -+ * -+ * 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. -+ * -+ * Revision history -+ * 4th Jul 2005 Initial version. -+ * 6th Sep 2006 Mike Arthur <linux@wolfsonmicro.com> -+ * Added pre and post sample calls. -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/version.h> -+#include <linux/kernel.h> -+#include <linux/input.h> -+#include <linux/delay.h> -+#include <linux/bitops.h> -+#include <linux/wm97xx.h> -+ -+#define TS_NAME "wm97xx" -+#define WM9712_VERSION "0.61" -+#define DEFAULT_PRESSURE 0xb0c0 -+ -+/* -+ * Debug -+ */ -+#if 0 -+#define dbg(format, arg...) printk(KERN_DEBUG TS_NAME ": " format "\n" , ## arg) -+#else -+#define dbg(format, arg...) -+#endif -+#define err(format, arg...) printk(KERN_ERR TS_NAME ": " format "\n" , ## arg) -+#define info(format, arg...) printk(KERN_INFO TS_NAME ": " format "\n" , ## arg) -+#define warn(format, arg...) printk(KERN_WARNING TS_NAME ": " format "\n" , ## arg) -+ -+/* -+ * Module parameters -+ */ -+ -+/* -+ * Set internal pull up for pen detect. -+ * -+ * Pull up is in the range 1.02k (least sensitive) to 64k (most sensitive) -+ * i.e. pull up resistance = 64k Ohms / rpu. -+ * -+ * Adjust this value if you are having problems with pen detect not -+ * detecting any down event. -+ */ -+static int rpu = 3; -+module_param(rpu, int, 0); -+MODULE_PARM_DESC(rpu, "Set internal pull up resitor for pen detect."); -+ -+/* -+ * Set current used for pressure measurement. -+ * -+ * Set pil = 2 to use 400uA -+ * pil = 1 to use 200uA and -+ * pil = 0 to disable pressure measurement. -+ * -+ * This is used to increase the range of values returned by the adc -+ * when measureing touchpanel pressure. -+ */ -+static int pil = 0; -+module_param(pil, int, 0); -+MODULE_PARM_DESC(pil, "Set current used for pressure measurement."); -+ -+/* -+ * Set threshold for pressure measurement. -+ * -+ * Pen down pressure below threshold is ignored. -+ */ -+static int pressure = DEFAULT_PRESSURE & 0xfff; -+module_param(pressure, int, 0); -+MODULE_PARM_DESC(pressure, "Set threshold for pressure measurement."); -+ -+/* -+ * Set adc sample delay. -+ * -+ * For accurate touchpanel measurements, some settling time may be -+ * required between the switch matrix applying a voltage across the -+ * touchpanel plate and the ADC sampling the signal. -+ * -+ * This delay can be set by setting delay = n, where n is the array -+ * position of the delay in the array delay_table below. -+ * Long delays > 1ms are supported for completeness, but are not -+ * recommended. -+ */ -+static int delay = 3; -+module_param(delay, int, 0); -+MODULE_PARM_DESC(delay, "Set adc sample delay."); -+ -+/* -+ * Set five_wire = 1 to use a 5 wire touchscreen. -+ * -+ * NOTE: Five wire mode does not allow for readback of pressure. -+ */ -+static int five_wire; -+module_param(five_wire, int, 0); -+MODULE_PARM_DESC(five_wire, "Set to '1' to use 5-wire touchscreen."); -+ -+/* -+ * Set adc mask function. -+ * -+ * Sources of glitch noise, such as signals driving an LCD display, may feed -+ * through to the touch screen plates and affect measurement accuracy. In -+ * order to minimise this, a signal may be applied to the MASK pin to delay or -+ * synchronise the sampling. -+ * -+ * 0 = No delay or sync -+ * 1 = High on pin stops conversions -+ * 2 = Edge triggered, edge on pin delays conversion by delay param (above) -+ * 3 = Edge triggered, edge on pin starts conversion after delay param -+ */ -+static int mask = 0; -+module_param(mask, int, 0); -+MODULE_PARM_DESC(mask, "Set adc mask function."); -+ -+/* -+ * Coordinate Polling Enable. -+ * -+ * Set to 1 to enable coordinate polling. e.g. x,y[,p] is sampled together -+ * for every poll. -+ */ -+static int coord = 0; -+module_param(coord, int, 0); -+MODULE_PARM_DESC(coord, "Polling coordinate mode"); -+ -+/* -+ * ADC sample delay times in uS -+ */ -+static const int delay_table[] = { -+ 21, // 1 AC97 Link frames -+ 42, // 2 -+ 84, // 4 -+ 167, // 8 -+ 333, // 16 -+ 667, // 32 -+ 1000, // 48 -+ 1333, // 64 -+ 2000, // 96 -+ 2667, // 128 -+ 3333, // 160 -+ 4000, // 192 -+ 4667, // 224 -+ 5333, // 256 -+ 6000, // 288 -+ 0 // No delay, switch matrix always on -+}; -+ -+/* -+ * Delay after issuing a POLL command. -+ * -+ * The delay is 3 AC97 link frames + the touchpanel settling delay -+ */ -+static inline void poll_delay(int d) -+{ -+ udelay (3 * AC97_LINK_FRAME + delay_table [d]); -+} -+ -+/* -+ * set up the physical settings of the WM9712 -+ */ -+static void init_wm9712_phy(struct wm97xx* wm) -+{ -+ u16 dig1 = 0; -+ u16 dig2 = WM97XX_RPR | WM9712_RPU(1); -+ -+ /* WM9712 rpu */ -+ if (rpu) { -+ dig2 &= 0xffc0; -+ dig2 |= WM9712_RPU(rpu); -+ dbg("setting pen detect pull-up to %d Ohms",64000 / rpu); -+ } -+ -+ /* touchpanel pressure current*/ -+ if (pil == 2) { -+ dig2 |= WM9712_PIL; -+ dbg("setting pressure measurement current to 400uA."); -+ } else if (pil) -+ dbg("setting pressure measurement current to 200uA."); -+ if(!pil) -+ pressure = 0; -+ -+ /* WM9712 five wire */ -+ if (five_wire) { -+ dig2 |= WM9712_45W; -+ dbg("setting 5-wire touchscreen mode."); -+ } -+ -+ /* polling mode sample settling delay */ -+ if (delay < 0 || delay > 15) { -+ dbg("supplied delay out of range."); -+ delay = 4; -+ } -+ dig1 &= 0xff0f; -+ dig1 |= WM97XX_DELAY(delay); -+ dbg("setting adc sample delay to %d u Secs.", delay_table[delay]); -+ -+ /* mask */ -+ dig2 |= ((mask & 0x3) << 6); -+ if (mask) { -+ u16 reg; -+ /* Set GPIO4 as Mask Pin*/ -+ reg = wm97xx_reg_read(wm, AC97_MISC_AFE); -+ wm97xx_reg_write(wm, AC97_MISC_AFE, reg | WM97XX_GPIO_4); -+ reg = wm97xx_reg_read(wm, AC97_GPIO_CFG); -+ wm97xx_reg_write(wm, AC97_GPIO_CFG, reg | WM97XX_GPIO_4); -+ } -+ -+ /* wait - coord mode */ -+ if(coord) -+ dig2 |= WM9712_WAIT; -+ -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); -+} -+ -+static int wm9712_digitiser_ioctl(struct wm97xx* wm, int cmd) -+{ -+ u16 dig2 = wm->dig[2]; -+ -+ switch(cmd) { -+ case WM97XX_DIG_START: -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2 | WM97XX_PRP_DET_DIG); -+ wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */ -+ break; -+ case WM97XX_DIG_STOP: -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2 & ~WM97XX_PRP_DET_DIG); -+ break; -+ case WM97XX_AUX_PREPARE: -+ memcpy(wm->dig_save, wm->dig, sizeof(wm->dig)); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, 0); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, WM97XX_PRP_DET_DIG); -+ break; -+ case WM97XX_DIG_RESTORE: -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, wm->dig_save[1]); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig_save[2]); -+ break; -+ case WM97XX_PHY_INIT: -+ init_wm9712_phy(wm); -+ break; -+ default: -+ return -EINVAL; -+ } -+ return 0; -+} -+ -+static inline int is_pden (struct wm97xx* wm) -+{ -+ return wm->dig[2] & WM9712_PDEN; -+} -+ -+/* -+ * Read a sample from the WM9712 adc in polling mode. -+ */ -+static int wm9712_poll_sample (struct wm97xx* wm, int adcsel, int *sample) -+{ -+ int timeout = 5 * delay; -+ -+ if (!wm->pen_probably_down) { -+ u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (!(data & WM97XX_PEN_DOWN)) -+ return RC_PENUP; -+ wm->pen_probably_down = 1; -+ } -+ -+ /* set up digitiser */ -+ if (adcsel & 0x8000) -+ adcsel = ((adcsel & 0x7fff) + 3) << 12; -+ -+ if (wm->mach_ops && wm->mach_ops->pre_sample) -+ wm->mach_ops->pre_sample(adcsel); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, adcsel | WM97XX_POLL | WM97XX_DELAY(delay)); -+ -+ /* wait 3 AC97 time slots + delay for conversion */ -+ poll_delay (delay); -+ -+ /* wait for POLL to go low */ -+ while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL) && timeout) { -+ udelay(AC97_LINK_FRAME); -+ timeout--; -+ } -+ -+ if (timeout <= 0) { -+ /* If PDEN is set, we can get a timeout when pen goes up */ -+ if (is_pden(wm)) -+ wm->pen_probably_down = 0; -+ else -+ dbg ("adc sample timeout"); -+ return RC_PENUP; -+ } -+ -+ *sample = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (wm->mach_ops && wm->mach_ops->post_sample) -+ wm->mach_ops->post_sample(adcsel); -+ -+ /* check we have correct sample */ -+ if ((*sample & WM97XX_ADCSEL_MASK) != adcsel) { -+ dbg ("adc wrong sample, read %x got %x", adcsel, -+ *sample & WM97XX_ADCSEL_MASK); -+ return RC_PENUP; -+ } -+ -+ if (!(*sample & WM97XX_PEN_DOWN)) { -+ wm->pen_probably_down = 0; -+ return RC_PENUP; -+ } -+ -+ return RC_VALID; -+} -+ -+/* -+ * Read a coord from the WM9712 adc in polling mode. -+ */ -+static int wm9712_poll_coord (struct wm97xx* wm, struct wm97xx_data *data) -+{ -+ int timeout = 5 * delay; -+ -+ if (!wm->pen_probably_down) { -+ u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (!(data & WM97XX_PEN_DOWN)) -+ return RC_PENUP; -+ wm->pen_probably_down = 1; -+ } -+ -+ /* set up digitiser */ -+ if (wm->mach_ops && wm->mach_ops->pre_sample) -+ wm->mach_ops->pre_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); -+ -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, -+ WM97XX_COO | WM97XX_POLL | WM97XX_DELAY(delay)); -+ -+ /* wait 3 AC97 time slots + delay for conversion and read x */ -+ poll_delay(delay); -+ data->x = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ /* wait for POLL to go low */ -+ while ((wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER1) & WM97XX_POLL) && timeout) { -+ udelay(AC97_LINK_FRAME); -+ timeout--; -+ } -+ -+ if (timeout <= 0) { -+ /* If PDEN is set, we can get a timeout when pen goes up */ -+ if (is_pden(wm)) -+ wm->pen_probably_down = 0; -+ else -+ dbg ("adc sample timeout"); -+ return RC_PENUP; -+ } -+ -+ /* read back y data */ -+ data->y = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (pil) -+ data->p = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ else -+ data->p = DEFAULT_PRESSURE; -+ -+ if (wm->mach_ops && wm->mach_ops->post_sample) -+ wm->mach_ops->post_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); -+ -+ /* check we have correct sample */ -+ if (!(data->x & WM97XX_ADCSEL_X) || !(data->y & WM97XX_ADCSEL_Y)) -+ goto err; -+ if(pil && !(data->p & WM97XX_ADCSEL_PRES)) -+ goto err; -+ -+ if (!(data->x & WM97XX_PEN_DOWN)) { -+ wm->pen_probably_down = 0; -+ return RC_PENUP; -+ } -+ return RC_VALID; -+err: -+ return RC_PENUP; -+} -+ -+/* -+ * Sample the WM9712 touchscreen in polling mode -+ */ -+static int wm9712_poll_touch(struct wm97xx* wm, struct wm97xx_data *data) -+{ -+ int rc; -+ -+ if(coord) { -+ if((rc = wm9712_poll_coord(wm, data)) != RC_VALID) -+ return rc; -+ } else { -+ if ((rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_X, &data->x)) != RC_VALID) -+ return rc; -+ -+ if ((rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_Y, &data->y)) != RC_VALID) -+ return rc; -+ -+ if (pil && !five_wire) { -+ if ((rc = wm9712_poll_sample(wm, WM97XX_ADCSEL_PRES, &data->p)) != RC_VALID) -+ return rc; -+ } else -+ data->p = DEFAULT_PRESSURE; -+ } -+ return RC_VALID; -+} -+ -+/* -+ * Enable WM9712 continuous mode, i.e. touch data is streamed across an AC97 slot -+ */ -+static int wm9712_acc_enable (struct wm97xx* wm, int enable) -+{ -+ u16 dig1, dig2; -+ int ret = 0; -+ -+ dig1 = wm->dig[1]; -+ dig2 = wm->dig[2]; -+ -+ if (enable) { -+ /* continous mode */ -+ if (wm->mach_ops->acc_startup && (ret = wm->mach_ops->acc_startup(wm)) < 0) -+ return ret; -+ dig1 &= ~(WM97XX_CM_RATE_MASK | WM97XX_ADCSEL_MASK | -+ WM97XX_DELAY_MASK | WM97XX_SLT_MASK); -+ dig1 |= WM97XX_CTC | WM97XX_COO | WM97XX_SLEN | -+ WM97XX_DELAY (delay) | -+ WM97XX_SLT (wm->acc_slot) | -+ WM97XX_RATE (wm->acc_rate); -+ if (pil) -+ dig1 |= WM97XX_ADCSEL_PRES; -+ dig2 |= WM9712_PDEN; -+ } else { -+ dig1 &= ~(WM97XX_CTC | WM97XX_COO | WM97XX_SLEN); -+ dig2 &= ~WM9712_PDEN; -+ if (wm->mach_ops->acc_shutdown) -+ wm->mach_ops->acc_shutdown(wm); -+ } -+ -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, dig1); -+ wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, dig2); -+ return 0; -+} -+ -+struct wm97xx_codec_drv wm97xx_codec = { -+ .id = WM9712_ID2, -+ .name = "wm9712", -+ .poll_sample = wm9712_poll_sample, -+ .poll_touch = wm9712_poll_touch, -+ .acc_enable = wm9712_acc_enable, -+ .digitiser_ioctl = wm9712_digitiser_ioctl, -+}; -+ -+EXPORT_SYMBOL_GPL(wm97xx_codec); -+ -+/* Module information */ -+MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); -+MODULE_DESCRIPTION("WM9712 Touch Screen Driver"); -+MODULE_LICENSE("GPL"); -Index: linux-2.6.17/drivers/input/touchscreen/wm9713.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.17/drivers/input/touchscreen/wm9713.c 2006-09-19 20:36:47.969052000 +0200 -@@ -0,0 +1,461 @@ -+/* -+ * wm9713.c -- Codec touch driver for Wolfson WM9713 AC97 Codec. -+ * -+ * Copyright 2003, 2004, 2005, 2006 Wolfson Microelectronics PLC. -+ * Author: Liam Girdwood -+ * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com -+ * Parts Copyright : Ian Molton <spyro@f2s.com> -+ * Andrew Zabolotny <zap@homelink.ru> -+ * Russell King <rmk@arm.linux.org.uk> -+ * -+ * 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. -+ * -+ * Revision history -+ * 6th Sep 2006 Mike Arthur <linux@wolfsonmicro.com> -+ * Added pre and post sample calls. -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/version.h> -+#include <linux/kernel.h> -+#include <linux/input.h> -+#include <linux/delay.h> -+#include <linux/bitops.h> -+#include <linux/wm97xx.h> -+ -+#define TS_NAME "wm97xx" -+#define WM9713_VERSION "0.53" -+#define DEFAULT_PRESSURE 0xb0c0 -+ -+/* -+ * Debug -+ */ -+#if 0 -+#define dbg(format, arg...) printk(KERN_DEBUG TS_NAME ": " format "\n" , ## arg) -+#else -+#define dbg(format, arg...) -+#endif -+#define err(format, arg...) printk(KERN_ERR TS_NAME ": " format "\n" , ## arg) -+#define info(format, arg...) printk(KERN_INFO TS_NAME ": " format "\n" , ## arg) -+#define warn(format, arg...) printk(KERN_WARNING TS_NAME ": " format "\n" , ## arg) -+ -+/* -+ * Module parameters -+ */ -+ -+/* -+ * Set internal pull up for pen detect. -+ * -+ * Pull up is in the range 1.02k (least sensitive) to 64k (most sensitive) -+ * i.e. pull up resistance = 64k Ohms / rpu. -+ * -+ * Adjust this value if you are having problems with pen detect not -+ * detecting any down event. -+ */ -+static int rpu = 1; -+module_param(rpu, int, 0); -+MODULE_PARM_DESC(rpu, "Set internal pull up resitor for pen detect."); -+ -+/* -+ * Set current used for pressure measurement. -+ * -+ * Set pil = 2 to use 400uA -+ * pil = 1 to use 200uA and -+ * pil = 0 to disable pressure measurement. -+ * -+ * This is used to increase the range of values returned by the adc -+ * when measureing touchpanel pressure. -+ */ -+static int pil = 0; -+module_param(pil, int, 0); -+MODULE_PARM_DESC(pil, "Set current used for pressure measurement."); -+ -+/* -+ * Set threshold for pressure measurement. -+ * -+ * Pen down pressure below threshold is ignored. -+ */ -+static int pressure = DEFAULT_PRESSURE & 0xfff; -+module_param(pressure, int, 0); -+MODULE_PARM_DESC(pressure, "Set threshold for pressure measurement."); -+ -+/* -+ * Set adc sample delay. -+ * -+ * For accurate touchpanel measurements, some settling time may be -+ * required between the switch matrix applying a voltage across the -+ * touchpanel plate and the ADC sampling the signal. -+ * -+ * This delay can be set by setting delay = n, where n is the array -+ * position of the delay in the array delay_table below. -+ * Long delays > 1ms are supported for completeness, but are not -+ * recommended. -+ */ -+static int delay = 4; -+module_param(delay, int, 0); -+MODULE_PARM_DESC(delay, "Set adc sample delay."); -+ -+/* -+ * Set adc mask function. -+ * -+ * Sources of glitch noise, such as signals driving an LCD display, may feed -+ * through to the touch screen plates and affect measurement accuracy. In -+ * order to minimise this, a signal may be applied to the MASK pin to delay or -+ * synchronise the sampling. -+ * -+ * 0 = No delay or sync -+ * 1 = High on pin stops conversions -+ * 2 = Edge triggered, edge on pin delays conversion by delay param (above) -+ * 3 = Edge triggered, edge on pin starts conversion after delay param -+ */ -+static int mask = 0; -+module_param(mask, int, 0); -+MODULE_PARM_DESC(mask, "Set adc mask function."); -+ -+/* -+ * Coordinate Polling Enable. -+ * -+ * Set to 1 to enable coordinate polling. e.g. x,y[,p] is sampled together -+ * for every poll. -+ */ -+static int coord = 1; -+module_param(coord, int, 0); -+MODULE_PARM_DESC(coord, "Polling coordinate mode"); -+ -+/* -+ * ADC sample delay times in uS -+ */ -+static const int delay_table[] = { -+ 21, // 1 AC97 Link frames -+ 42, // 2 -+ 84, // 4 -+ 167, // 8 -+ 333, // 16 -+ 667, // 32 -+ 1000, // 48 -+ 1333, // 64 -+ 2000, // 96 -+ 2667, // 128 -+ 3333, // 160 -+ 4000, // 192 -+ 4667, // 224 -+ 5333, // 256 -+ 6000, // 288 -+ 0 // No delay, switch matrix always on -+}; -+ -+/* -+ * Delay after issuing a POLL command. -+ * -+ * The delay is 3 AC97 link frames + the touchpanel settling delay -+ */ -+static inline void poll_delay(int d) -+{ -+ udelay (3 * AC97_LINK_FRAME + delay_table [d]); -+} -+ -+/* -+ * set up the physical settings of the WM9713 -+ */ -+static void init_wm9713_phy(struct wm97xx* wm) -+{ -+ u16 dig1 = 0, dig2, dig3; -+ -+ /* default values */ -+ dig2 = WM97XX_DELAY(4) | WM97XX_SLT(5); -+ dig3= WM9712_RPU(1); -+ -+ /* rpu */ -+ if (rpu) { -+ dig3 &= 0xffc0; -+ dig3 |= WM9712_RPU(rpu); -+ info("setting pen detect pull-up to %d Ohms",64000 / rpu); -+ } -+ -+ /* touchpanel pressure */ -+ if (pil == 2) { -+ dig3 |= WM9712_PIL; -+ info("setting pressure measurement current to 400uA."); -+ } else if (pil) -+ info ("setting pressure measurement current to 200uA."); -+ if(!pil) -+ pressure = 0; -+ -+ /* sample settling delay */ -+ if (delay < 0 || delay > 15) { -+ info ("supplied delay out of range."); -+ delay = 4; -+ info("setting adc sample delay to %d u Secs.", delay_table[delay]); -+ } -+ dig2 &= 0xff0f; -+ dig2 |= WM97XX_DELAY(delay); -+ -+ /* mask */ -+ dig3 |= ((mask & 0x3) << 4); -+ if(coord) -+ dig3 |= WM9713_WAIT; -+ -+ wm->misc = wm97xx_reg_read(wm, 0x5a); -+ -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG2, dig2); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, dig3); -+ wm97xx_reg_write(wm, AC97_GPIO_STICKY, 0x0); -+} -+ -+static int wm9713_digitiser_ioctl(struct wm97xx* wm, int cmd) -+{ -+ u16 val = 0; -+ -+ switch(cmd){ -+ case WM97XX_DIG_START: -+ val = wm97xx_reg_read(wm, AC97_EXTENDED_MID); -+ wm97xx_reg_write(wm, AC97_EXTENDED_MID, val & 0x7fff); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig[2] | WM97XX_PRP_DET_DIG); -+ wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */ -+ break; -+ case WM97XX_DIG_STOP: -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig[2] & ~WM97XX_PRP_DET_DIG); -+ val = wm97xx_reg_read(wm, AC97_EXTENDED_MID); -+ wm97xx_reg_write(wm, AC97_EXTENDED_MID, val | 0x8000); -+ break; -+ case WM97XX_AUX_PREPARE: -+ memcpy(wm->dig_save, wm->dig, sizeof(wm->dig)); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, 0); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG2, 0); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, WM97XX_PRP_DET_DIG); -+ break; -+ case WM97XX_DIG_RESTORE: -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, wm->dig_save[0]); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG2, wm->dig_save[1]); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig_save[2]); -+ break; -+ case WM97XX_PHY_INIT: -+ init_wm9713_phy(wm); -+ break; -+ default: -+ return -EINVAL; -+ } -+ return 0; -+} -+ -+static inline int is_pden (struct wm97xx* wm) -+{ -+ return wm->dig[2] & WM9713_PDEN; -+} -+ -+/* -+ * Read a sample from the WM9713 adc in polling mode. -+ */ -+static int wm9713_poll_sample (struct wm97xx* wm, int adcsel, int *sample) -+{ -+ u16 dig1; -+ int timeout = 5 * delay; -+ -+ if (!wm->pen_probably_down) { -+ u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (!(data & WM97XX_PEN_DOWN)) -+ return RC_PENUP; -+ wm->pen_probably_down = 1; -+ } -+ -+ /* set up digitiser */ -+ if (adcsel & 0x8000) -+ adcsel = 1 << ((adcsel & 0x7fff) + 3); -+ -+ dig1 = wm97xx_reg_read(wm, AC97_WM9713_DIG1); -+ dig1 &= ~WM9713_ADCSEL_MASK; -+ -+ if (wm->mach_ops && wm->mach_ops->pre_sample) -+ wm->mach_ops->pre_sample(adcsel); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1 | adcsel |WM9713_POLL); -+ -+ /* wait 3 AC97 time slots + delay for conversion */ -+ poll_delay(delay); -+ -+ /* wait for POLL to go low */ -+ while ((wm97xx_reg_read(wm, AC97_WM9713_DIG1) & WM9713_POLL) && timeout) { -+ udelay(AC97_LINK_FRAME); -+ timeout--; -+ } -+ -+ if (timeout <= 0) { -+ /* If PDEN is set, we can get a timeout when pen goes up */ -+ if (is_pden(wm)) -+ wm->pen_probably_down = 0; -+ else -+ dbg ("adc sample timeout"); -+ return RC_PENUP; -+ } -+ -+ *sample =wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (wm->mach_ops && wm->mach_ops->post_sample) -+ wm->mach_ops->post_sample(adcsel); -+ -+ /* check we have correct sample */ -+ if ((*sample & WM97XX_ADCSRC_MASK) != ffs(adcsel >> 1) << 12) { -+ dbg ("adc wrong sample, read %x got %x", adcsel, -+ *sample & WM97XX_ADCSRC_MASK); -+ return RC_PENUP; -+ } -+ -+ if (!(*sample & WM97XX_PEN_DOWN)) { -+ wm->pen_probably_down = 0; -+ return RC_PENUP; -+ } -+ -+ return RC_VALID; -+} -+ -+/* -+ * Read a coordinate from the WM9713 adc in polling mode. -+ */ -+static int wm9713_poll_coord (struct wm97xx* wm, struct wm97xx_data *data) -+{ -+ u16 dig1; -+ int timeout = 5 * delay; -+ -+ if (!wm->pen_probably_down) { -+ u16 data = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (!(data & WM97XX_PEN_DOWN)) -+ return RC_PENUP; -+ wm->pen_probably_down = 1; -+ } -+ -+ /* set up digitiser */ -+ dig1 = wm97xx_reg_read(wm, AC97_WM9713_DIG1); -+ dig1 &= ~WM9713_ADCSEL_MASK; -+ if(pil) -+ dig1 |= WM97XX_ADCSEL_PRES; -+ -+ if (wm->mach_ops && wm->mach_ops->pre_sample) -+ wm->mach_ops->pre_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1 | WM9713_POLL | WM9713_COO); -+ -+ /* wait 3 AC97 time slots + delay for conversion */ -+ poll_delay(delay); -+ data->x = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ /* wait for POLL to go low */ -+ while ((wm97xx_reg_read(wm, AC97_WM9713_DIG1) & WM9713_POLL) && timeout) { -+ udelay(AC97_LINK_FRAME); -+ timeout--; -+ } -+ -+ if (timeout <= 0) { -+ /* If PDEN is set, we can get a timeout when pen goes up */ -+ if (is_pden(wm)) -+ wm->pen_probably_down = 0; -+ else -+ dbg ("adc sample timeout"); -+ return RC_PENUP; -+ } -+ -+ /* read back data */ -+ data->y = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ if (pil) -+ data->p = wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); -+ else -+ data->p = DEFAULT_PRESSURE; -+ -+ if (wm->mach_ops && wm->mach_ops->post_sample) -+ wm->mach_ops->post_sample(WM97XX_ADCSEL_X | WM97XX_ADCSEL_Y); -+ -+ /* check we have correct sample */ -+ if (!(data->x & WM97XX_ADCSEL_X) || !(data->y & WM97XX_ADCSEL_Y)) -+ goto err; -+ if(pil && !(data->p & WM97XX_ADCSEL_PRES)) -+ goto err; -+ -+ if (!(data->x & WM97XX_PEN_DOWN)) { -+ wm->pen_probably_down = 0; -+ return RC_PENUP; -+ } -+ return RC_VALID; -+err: -+ return RC_PENUP; -+} -+ -+/* -+ * Sample the WM9713 touchscreen in polling mode -+ */ -+static int wm9713_poll_touch(struct wm97xx* wm, struct wm97xx_data *data) -+{ -+ int rc; -+ -+ if(coord) { -+ if((rc = wm9713_poll_coord(wm, data)) != RC_VALID) -+ return rc; -+ } else { -+ if ((rc = wm9713_poll_sample(wm, WM9713_ADCSEL_X, &data->x)) != RC_VALID) -+ return rc; -+ if ((rc = wm9713_poll_sample(wm, WM9713_ADCSEL_Y, &data->y)) != RC_VALID) -+ return rc; -+ if (pil) { -+ if ((rc = wm9713_poll_sample(wm, WM9713_ADCSEL_PRES, &data->p)) != RC_VALID) -+ return rc; -+ } else -+ data->p = DEFAULT_PRESSURE; -+ } -+ return RC_VALID; -+} -+ -+/* -+ * Enable WM9713 continuous mode, i.e. touch data is streamed across an AC97 slot -+ */ -+static int wm9713_acc_enable (struct wm97xx* wm, int enable) -+{ -+ u16 dig1, dig2, dig3; -+ int ret = 0; -+ -+ dig1 = wm->dig[0]; -+ dig2 = wm->dig[1]; -+ dig3 = wm->dig[2]; -+ -+ if (enable) { -+ /* continous mode */ -+ if (wm->mach_ops->acc_startup && -+ (ret = wm->mach_ops->acc_startup(wm)) < 0) -+ return ret; -+ -+ dig1 &= ~WM9713_ADCSEL_MASK; -+ dig1 |= WM9713_CTC | WM9713_COO | WM9713_ADCSEL_X | WM9713_ADCSEL_Y; -+ if (pil) -+ dig1 |= WM9713_ADCSEL_PRES; -+ dig2 &= ~(WM97XX_DELAY_MASK | WM97XX_SLT_MASK | WM97XX_CM_RATE_MASK); -+ dig2 |= WM97XX_SLEN | WM97XX_DELAY (delay) | -+ WM97XX_SLT (wm->acc_slot) | WM97XX_RATE (wm->acc_rate); -+ dig3 |= WM9713_PDEN; -+ } else { -+ dig1 &= ~(WM9713_CTC | WM9713_COO); -+ dig2 &= ~WM97XX_SLEN; -+ dig3 &= ~WM9713_PDEN; -+ if (wm->mach_ops->acc_shutdown) -+ wm->mach_ops->acc_shutdown(wm); -+ } -+ -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, dig1); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG2, dig2); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, dig3); -+ return ret; -+} -+ -+struct wm97xx_codec_drv wm97xx_codec = { -+ .id = WM9713_ID2, -+ .name = "wm9713", -+ .poll_sample = wm9713_poll_sample, -+ .poll_touch = wm9713_poll_touch, -+ .acc_enable = wm9713_acc_enable, -+ .digitiser_ioctl = wm9713_digitiser_ioctl, -+}; -+ -+EXPORT_SYMBOL_GPL(wm97xx_codec); -+ -+/* Module information */ -+MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); -+MODULE_DESCRIPTION("WM9713 Touch Screen Driver"); -+MODULE_LICENSE("GPL"); -Index: linux-2.6.17/drivers/input/touchscreen/wm97xx-core.c -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.17/drivers/input/touchscreen/wm97xx-core.c 2006-09-19 20:36:47.969052000 +0200 -@@ -0,0 +1,912 @@ -+/* -+ * wm97xx-core.c -- Touch screen driver core for Wolfson WM9705, WM9712 -+ * and WM9713 AC97 Codecs. -+ * -+ * Copyright 2003, 2004, 2005, 2006 Wolfson Microelectronics PLC. -+ * Author: Liam Girdwood -+ * liam.girdwood@wolfsonmicro.com or linux@wolfsonmicro.com -+ * Parts Copyright : Ian Molton <spyro@f2s.com> -+ * Andrew Zabolotny <zap@homelink.ru> -+ * Russell King <rmk@arm.linux.org.uk> -+ * -+ * 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. -+ * -+ * Notes: -+ * -+ * Features: -+ * - supports WM9705, WM9712, WM9713 -+ * - polling mode -+ * - continuous mode (arch-dependent) -+ * - adjustable rpu/dpp settings -+ * - adjustable pressure current -+ * - adjustable sample settle delay -+ * - 4 and 5 wire touchscreens (5 wire is WM9712 only) -+ * - pen down detection -+ * - battery monitor -+ * - sample AUX adc's -+ * - power management -+ * - codec GPIO -+ * - codec event notification -+ * Todo -+ * - Support for async sampling control for noisy LCD's. -+ * -+ * Revision history -+ * 7th May 2003 Initial version. -+ * 6th June 2003 Added non module support and AC97 registration. -+ * 18th June 2003 Added AUX adc sampling. -+ * 23rd June 2003 Did some minimal reformatting, fixed a couple of -+ * codec_mutexing bugs and noted a race to fix. -+ * 24th June 2003 Added power management and fixed race condition. -+ * 10th July 2003 Changed to a misc device. -+ * 31st July 2003 Moved TS_EVENT and TS_CAL to wm97xx.h -+ * 8th Aug 2003 Added option for read() calling wm97xx_sample_touch() -+ * because some ac97_read/ac_97_write call schedule() -+ * 7th Nov 2003 Added Input touch event interface, stanley.cai@intel.com -+ * 13th Nov 2003 Removed h3600 touch interface, added interrupt based -+ * pen down notification and implemented continous mode -+ * on XScale arch. -+ * 16th Nov 2003 Ian Molton <spyro@f2s.com> -+ * Modified so that it suits the new 2.6 driver model. -+ * 25th Jan 2004 Andrew Zabolotny <zap@homelink.ru> -+ * Implemented IRQ-driven pen down detection, implemented -+ * the private API meant to be exposed to platform-specific -+ * drivers, reorganized the driver so that it supports -+ * an arbitrary number of devices. -+ * 1st Feb 2004 Moved continuous mode handling to a separate -+ * architecture-dependent file. For now only PXA -+ * built-in AC97 controller is supported (pxa-ac97-wm97xx.c). -+ * 11th Feb 2004 Reduced CPU usage by keeping a cached copy of both -+ * digitizer registers instead of reading them every time. -+ * A reorganization of the whole code for better -+ * error handling. -+ * 17th Apr 2004 Added BMON support. -+ * 17th Nov 2004 Added codec GPIO, codec event handling (real and virtual -+ * GPIOs) and 2.6 power management. -+ * 29th Nov 2004 Added WM9713 support. -+ * 4th Jul 2005 Moved codec specific code out to seperate files. -+ * 6th Sep 2006 Mike Arthur <linux@wolfsonmicro.com> -+ * Added bus interface. -+ */ -+ -+#include <linux/module.h> -+#include <linux/moduleparam.h> -+#include <linux/version.h> -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/delay.h> -+#include <linux/string.h> -+#include <linux/proc_fs.h> -+#include <linux/pm.h> -+#include <linux/interrupt.h> -+#include <linux/bitops.h> -+#include <linux/workqueue.h> -+#include <linux/device.h> -+#include <linux/wm97xx.h> -+#include <asm/uaccess.h> -+#include <asm/io.h> -+ -+#define TS_NAME "wm97xx" -+#define WM_CORE_VERSION "0.63" -+#define DEFAULT_PRESSURE 0xb0c0 -+ -+/* -+ * WM97xx - enable/disable AUX ADC sysfs -+ */ -+static int aux_sys = 1; -+module_param(aux_sys, int, 0); -+MODULE_PARM_DESC(aux_sys, "enable AUX ADC sysfs entries"); -+ -+/* -+ * WM97xx - enable/disable codec status sysfs -+ */ -+static int status_sys = 1; -+module_param(status_sys, int, 0); -+MODULE_PARM_DESC(status_sys, "enable codec status sysfs entries"); -+ -+/* -+ * Touchscreen absolute values -+ * -+ * These parameters are used to help the input layer discard out of -+ * range readings and reduce jitter etc. -+ * -+ * o min, max:- indicate the min and max values your touch screen returns -+ * o fuzz:- use a higher number to reduce jitter -+ * -+ * The default values correspond to Mainstone II in QVGA mode -+ * -+ * Please read -+ * Documentation/input/input-programming.txt for more details. -+ */ -+ -+static int abs_x[3] = {350,3900,5}; -+module_param_array(abs_x, int, NULL, 0); -+MODULE_PARM_DESC(abs_x, "Touchscreen absolute X min, max, fuzz"); -+ -+static int abs_y[3] = {320,3750,40}; -+module_param_array(abs_y, int, NULL, 0); -+MODULE_PARM_DESC(abs_y, "Touchscreen absolute Y min, max, fuzz"); -+ -+static int abs_p[3] = {0,150,4}; -+module_param_array(abs_p, int, NULL, 0); -+MODULE_PARM_DESC(abs_p, "Touchscreen absolute Pressure min, max, fuzz"); -+ -+/* -+ * Debug -+ */ -+#if 0 -+#define dbg(format, arg...) printk(KERN_DEBUG TS_NAME ": " format "\n" , ## arg) -+#else -+#define dbg(format, arg...) -+#endif -+#define err(format, arg...) printk(KERN_ERR TS_NAME ": " format "\n" , ## arg) -+#define info(format, arg...) printk(KERN_INFO TS_NAME ": " format "\n" , ## arg) -+#define warn(format, arg...) printk(KERN_WARNING TS_NAME ": " format "\n" , ## arg) -+ -+/* codec AC97 IO access */ -+int wm97xx_reg_read(struct wm97xx *wm, u16 reg) -+{ -+ if (wm->ac97) -+ return wm->ac97->bus->ops->read(wm->ac97, reg); -+ else -+ return -1; -+} -+ -+void wm97xx_reg_write(struct wm97xx *wm, u16 reg, u16 val) -+{ -+ /* cache digitiser registers */ -+ if(reg >= AC97_WM9713_DIG1 && reg <= AC97_WM9713_DIG3) -+ wm->dig[(reg - AC97_WM9713_DIG1) >> 1] = val; -+ -+ /* cache gpio regs */ -+ if(reg >= AC97_GPIO_CFG && reg <= AC97_MISC_AFE) -+ wm->gpio[(reg - AC97_GPIO_CFG) >> 1] = val; -+ -+ /* wm9713 irq reg */ -+ if(reg == 0x5a) -+ wm->misc = val; -+ -+ if (wm->ac97) -+ wm->ac97->bus->ops->write(wm->ac97, reg, val); -+} -+ -+ -+/** -+ * wm97xx_read_aux_adc - Read the aux adc. -+ * @wm: wm97xx device. -+ * @adcsel: codec ADC to be read -+ * -+ * Reads the selected AUX ADC. -+ */ -+ -+int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel) -+{ -+ int power_adc = 0, auxval; -+ u16 power = 0; -+ -+ /* get codec */ -+ mutex_lock(&wm->codec_mutex); -+ -+ /* When the touchscreen is not in use, we may have to power up the AUX ADC -+ * before we can use sample the AUX inputs-> -+ */ -+ if (wm->id == WM9713_ID2 && -+ (power = wm97xx_reg_read(wm, AC97_EXTENDED_MID)) & 0x8000) { -+ power_adc = 1; -+ wm97xx_reg_write(wm, AC97_EXTENDED_MID, power & 0x7fff); -+ } -+ -+ /* Prepare the codec for AUX reading */ -+ wm->codec->digitiser_ioctl(wm, WM97XX_AUX_PREPARE); -+ -+ /* Turn polling mode on to read AUX ADC */ -+ wm->pen_probably_down = 1; -+ wm->codec->poll_sample(wm, adcsel, &auxval); -+ -+ if (power_adc) -+ wm97xx_reg_write(wm, AC97_EXTENDED_MID, power | 0x8000); -+ -+ wm->codec->digitiser_ioctl(wm, WM97XX_DIG_RESTORE); -+ -+ wm->pen_probably_down = 0; -+ -+ mutex_unlock(&wm->codec_mutex); -+ return auxval & 0xfff; -+} -+ -+#define WM97XX_AUX_ATTR(name,input) \ -+static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf) \ -+{ \ -+ struct wm97xx *wm = (struct wm97xx*)dev->driver_data; \ -+ return sprintf(buf, "%d\n", wm97xx_read_aux_adc(wm, input)); \ -+} \ -+static DEVICE_ATTR(name, 0444, name##_show, NULL) -+ -+WM97XX_AUX_ATTR(aux1, WM97XX_AUX_ID1); -+WM97XX_AUX_ATTR(aux2, WM97XX_AUX_ID2); -+WM97XX_AUX_ATTR(aux3, WM97XX_AUX_ID3); -+WM97XX_AUX_ATTR(aux4, WM97XX_AUX_ID4); -+ -+#define WM97XX_STATUS_ATTR(name) \ -+static ssize_t name##_show(struct device *dev, struct device_attribute *attr, char *buf) \ -+{ \ -+ struct wm97xx *wm = (struct wm97xx*)dev->driver_data; \ -+ return sprintf(buf, "%d\n", wm97xx_reg_read(wm, AC97_GPIO_STATUS)); \ -+} \ -+static DEVICE_ATTR(name, 0444, name##_show, NULL) -+ -+WM97XX_STATUS_ATTR(gpio); -+ -+static int wm97xx_sys_add(struct device *dev) -+{ -+ if (aux_sys) { -+ device_create_file(dev, &dev_attr_aux1); -+ device_create_file(dev, &dev_attr_aux2); -+ device_create_file(dev, &dev_attr_aux3); -+ device_create_file(dev, &dev_attr_aux4); -+ } -+ if (status_sys) -+ device_create_file(dev, &dev_attr_gpio); -+ return 0; -+} -+ -+static void wm97xx_sys_remove(struct device *dev) -+{ -+ if (status_sys) -+ device_remove_file(dev, &dev_attr_gpio); -+ if (aux_sys) { -+ device_remove_file(dev, &dev_attr_aux1); -+ device_remove_file(dev, &dev_attr_aux2); -+ device_remove_file(dev, &dev_attr_aux3); -+ device_remove_file(dev, &dev_attr_aux4); -+ } -+} -+ -+/** -+ * wm97xx_get_gpio - Get the status of a codec GPIO. -+ * @wm: wm97xx device. -+ * @gpio: gpio -+ * -+ * Get the status of a codec GPIO pin -+ */ -+ -+wm97xx_gpio_status_t wm97xx_get_gpio(struct wm97xx *wm, u32 gpio) -+{ -+ u16 status; -+ wm97xx_gpio_status_t ret; -+ -+ mutex_lock(&wm->codec_mutex); -+ status = wm97xx_reg_read(wm, AC97_GPIO_STATUS); -+ -+ if (status & gpio) -+ ret = WM97XX_GPIO_HIGH; -+ else -+ ret = WM97XX_GPIO_LOW; -+ -+ mutex_unlock(&wm->codec_mutex); -+ return ret; -+} -+ -+/** -+ * wm97xx_set_gpio - Set the status of a codec GPIO. -+ * @wm: wm97xx device. -+ * @gpio: gpio -+ * -+ * -+ * Set the status of a codec GPIO pin -+ */ -+ -+void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio, -+ wm97xx_gpio_status_t status) -+{ -+ u16 reg; -+ -+ mutex_lock(&wm->codec_mutex); -+ reg = wm97xx_reg_read(wm, AC97_GPIO_STATUS); -+ -+ if (status & WM97XX_GPIO_HIGH) -+ reg |= gpio; -+ else -+ reg &= ~gpio; -+ -+ if (wm->id == WM9712_ID2) -+ wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg << 1); -+ else -+ wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg); -+ mutex_unlock(&wm->codec_mutex); -+} -+ -+/* -+ * Codec GPIO pin configuration, this set's pin direction, polarity, -+ * stickyness and wake up. -+ */ -+void wm97xx_config_gpio(struct wm97xx *wm, u32 gpio, wm97xx_gpio_dir_t dir, -+ wm97xx_gpio_pol_t pol, wm97xx_gpio_sticky_t sticky, -+ wm97xx_gpio_wake_t wake) -+{ -+ u16 reg; -+ -+ mutex_lock(&wm->codec_mutex); -+ reg = wm97xx_reg_read(wm, AC97_GPIO_POLARITY); -+ -+ if (pol == WM97XX_GPIO_POL_HIGH) -+ reg |= gpio; -+ else -+ reg &= ~gpio; -+ -+ wm97xx_reg_write(wm, AC97_GPIO_POLARITY, reg); -+ reg = wm97xx_reg_read(wm, AC97_GPIO_STICKY); -+ -+ if (sticky == WM97XX_GPIO_STICKY) -+ reg |= gpio; -+ else -+ reg &= ~gpio; -+ -+ wm97xx_reg_write(wm, AC97_GPIO_STICKY, reg); -+ reg = wm97xx_reg_read(wm, AC97_GPIO_WAKEUP); -+ -+ if (wake == WM97XX_GPIO_WAKE) -+ reg |= gpio; -+ else -+ reg &= ~gpio; -+ -+ wm97xx_reg_write(wm, AC97_GPIO_WAKEUP, reg); -+ reg = wm97xx_reg_read(wm, AC97_GPIO_CFG); -+ -+ if (dir == WM97XX_GPIO_IN) -+ reg |= gpio; -+ else -+ reg &= ~gpio; -+ -+ wm97xx_reg_write(wm, AC97_GPIO_CFG, reg); -+ mutex_unlock(&wm->codec_mutex); -+} -+ -+/* -+ * Handle a pen down interrupt. -+ */ -+static void wm97xx_pen_irq_worker(void *ptr) -+{ -+ struct wm97xx *wm = (struct wm97xx *) ptr; -+ -+ /* do we need to enable the touch panel reader */ -+ if (wm->id == WM9705_ID2) { -+ if (wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD) & WM97XX_PEN_DOWN) -+ wm->pen_is_down = 1; -+ else -+ wm->pen_is_down = 0; -+ wake_up_interruptible(&wm->pen_irq_wait); -+ } else { -+ u16 status, pol; -+ mutex_lock(&wm->codec_mutex); -+ status = wm97xx_reg_read(wm, AC97_GPIO_STATUS); -+ pol = wm97xx_reg_read(wm, AC97_GPIO_POLARITY); -+ -+ if (WM97XX_GPIO_13 & pol & status) { -+ wm->pen_is_down = 1; -+ wm97xx_reg_write(wm, AC97_GPIO_POLARITY, pol & ~WM97XX_GPIO_13); -+ } else { -+ wm->pen_is_down = 0; -+ wm97xx_reg_write(wm, AC97_GPIO_POLARITY, pol | WM97XX_GPIO_13); -+ } -+ -+ if (wm->id == WM9712_ID2) -+ wm97xx_reg_write(wm, AC97_GPIO_STATUS, (status & ~WM97XX_GPIO_13) << 1); -+ else -+ wm97xx_reg_write(wm, AC97_GPIO_STATUS, status & ~WM97XX_GPIO_13); -+ mutex_unlock(&wm->codec_mutex); -+ wake_up_interruptible(&wm->pen_irq_wait); -+ } -+ -+ if (!wm->pen_is_down && wm->mach_ops && wm->mach_ops->acc_enabled) -+ wm->mach_ops->acc_pen_up(wm); -+ enable_irq(wm->pen_irq); -+} -+ -+/* -+ * Codec PENDOWN irq handler -+ * -+ * We have to disable the codec interrupt in the handler because it can -+ * take upto 1ms to clear the interrupt source. The interrupt is then enabled -+ * again in the slow handler when the source has been cleared. -+ */ -+static irqreturn_t wm97xx_pen_interrupt(int irq, void *dev_id, -+ struct pt_regs *regs) -+{ -+ struct wm97xx *wm = (struct wm97xx *) dev_id; -+ disable_irq(wm->pen_irq); -+ queue_work(wm->pen_irq_workq, &wm->pen_event_work); -+ return IRQ_HANDLED; -+} -+ -+/* -+ * initialise pen IRQ handler and workqueue -+ */ -+static int wm97xx_init_pen_irq(struct wm97xx *wm) -+{ -+ u16 reg; -+ -+ INIT_WORK(&wm->pen_event_work, wm97xx_pen_irq_worker, wm); -+ if ((wm->pen_irq_workq = -+ create_singlethread_workqueue("kwm97pen")) == NULL) { -+ err("could not create pen irq work queue"); -+ wm->pen_irq = 0; -+ return -EINVAL; -+ } -+ -+ if (request_irq (wm->pen_irq, wm97xx_pen_interrupt, SA_SHIRQ, "wm97xx-pen", wm)) { -+ err("could not register codec pen down interrupt, will poll for pen down"); -+ destroy_workqueue(wm->pen_irq_workq); -+ wm->pen_irq = 0; -+ return -EINVAL; -+ } -+ -+ /* enable PEN down on wm9712/13 */ -+ if (wm->id != WM9705_ID2) { -+ reg = wm97xx_reg_read(wm, AC97_MISC_AFE); -+ wm97xx_reg_write(wm, AC97_MISC_AFE, reg & 0xfffb); -+ reg = wm97xx_reg_read(wm, 0x5a); -+ wm97xx_reg_write(wm, 0x5a, reg & ~0x0001); -+ } -+ -+ return 0; -+} -+ -+/* Private struct for communication between struct wm97xx_tshread -+ * and wm97xx_read_samples */ -+struct ts_state { -+ int sleep_time; -+ int min_sleep_time; -+}; -+ -+static int wm97xx_read_samples(struct wm97xx *wm, struct ts_state *state) -+{ -+ struct wm97xx_data data; -+ int rc; -+ -+ mutex_lock(&wm->codec_mutex); -+ -+ if (wm->mach_ops && wm->mach_ops->acc_enabled) -+ rc = wm->mach_ops->acc_pen_down(wm); -+ else -+ rc = wm->codec->poll_touch(wm, &data); -+ -+ if (rc & RC_PENUP) { -+ if (wm->pen_is_down) { -+ wm->pen_is_down = 0; -+ dbg("pen up"); -+ input_report_abs(wm->input_dev, ABS_PRESSURE, 0); -+ input_sync(wm->input_dev); -+ } else if (!(rc & RC_AGAIN)) { -+ /* We need high frequency updates only while pen is down, -+ * the user never will be able to touch screen faster than -+ * a few times per second... On the other hand, when the -+ * user is actively working with the touchscreen we don't -+ * want to lose the quick response. So we will slowly -+ * increase sleep time after the pen is up and quicky -+ * restore it to ~one task switch when pen is down again. -+ */ -+ if (state->sleep_time < HZ / 10) -+ state->sleep_time++; -+ } -+ -+ } else if (rc & RC_VALID) { -+ dbg("pen down: x=%x:%d, y=%x:%d, pressure=%x:%d\n", -+ data.x >> 12, data.x & 0xfff, data.y >> 12, -+ data.y & 0xfff, data.p >> 12, data.p & 0xfff); -+ input_report_abs(wm->input_dev, ABS_X, data.x & 0xfff); -+ input_report_abs(wm->input_dev, ABS_Y, data.y & 0xfff); -+ input_report_abs(wm->input_dev, ABS_PRESSURE, data.p & 0xfff); -+ input_sync(wm->input_dev); -+ wm->pen_is_down = 1; -+ state->sleep_time = state->min_sleep_time; -+ } else if (rc & RC_PENDOWN) { -+ dbg("pen down"); -+ wm->pen_is_down = 1; -+ state->sleep_time = state->min_sleep_time; -+ } -+ -+ mutex_unlock(&wm->codec_mutex); -+ return rc; -+} -+ -+/* -+* The touchscreen sample reader thread. -+*/ -+static int wm97xx_ts_read(void *data) -+{ -+ int rc; -+ struct ts_state state; -+ struct wm97xx *wm = (struct wm97xx *) data; -+ -+ /* set up thread context */ -+ wm->ts_task = current; -+ daemonize("kwm97xxts"); -+ -+ if (wm->codec == NULL) { -+ wm->ts_task = NULL; -+ printk(KERN_ERR "codec is NULL, bailing\n"); -+ } -+ -+ complete(&wm->ts_init); -+ wm->pen_is_down = 0; -+ state.min_sleep_time = HZ >= 100 ? HZ / 100 : 1; -+ if (state.min_sleep_time < 1) -+ state.min_sleep_time = 1; -+ state.sleep_time = state.min_sleep_time; -+ -+ /* touch reader loop */ -+ while (wm->ts_task) { -+ do { -+ try_to_freeze(); -+ rc = wm97xx_read_samples(wm, &state); -+ } while (rc & RC_AGAIN); -+ if (!wm->pen_is_down && wm->pen_irq) { -+ /* Nice, we don't have to poll for pen down event */ -+ wait_event_interruptible(wm->pen_irq_wait, wm->pen_is_down); -+ } else { -+ set_task_state(current, TASK_INTERRUPTIBLE); -+ schedule_timeout(state.sleep_time); -+ } -+ } -+ complete_and_exit(&wm->ts_exit, 0); -+} -+ -+/** -+ * wm97xx_ts_input_open - Open the touch screen input device. -+ * @idev: Input device to be opened. -+ * -+ * Called by the input sub system to open a wm97xx touchscreen device. -+ * Starts the touchscreen thread and touch digitiser. -+ */ -+static int wm97xx_ts_input_open(struct input_dev *idev) -+{ -+ int ret = 0; -+ struct wm97xx *wm = (struct wm97xx *) idev->private; -+ -+ mutex_lock(&wm->codec_mutex); -+ /* first time opened ? */ -+ if (wm->ts_use_count++ == 0) { -+ /* start touchscreen thread */ -+ init_completion(&wm->ts_init); -+ init_completion(&wm->ts_exit); -+ ret = kernel_thread(wm97xx_ts_read, wm, CLONE_KERNEL); -+ -+ if (ret >= 0) { -+ wait_for_completion(&wm->ts_init); -+ if (wm->ts_task == NULL) -+ ret = -EINVAL; -+ } else { -+ mutex_unlock(&wm->codec_mutex); -+ return ret; -+ } -+ -+ /* start digitiser */ -+ if (wm->mach_ops && wm->mach_ops->acc_enabled) -+ wm->codec->acc_enable(wm, 1); -+ wm->codec->digitiser_ioctl(wm, WM97XX_DIG_START); -+ -+ /* init pen down/up irq handling */ -+ if (wm->pen_irq) { -+ wm97xx_init_pen_irq(wm); -+ -+ if (wm->pen_irq == 0) { -+ /* we failed to get an irq for pen down events, -+ * so we resort to polling. kickstart the reader */ -+ wm->pen_is_down = 1; -+ wake_up_interruptible(&wm->pen_irq_wait); -+ } -+ } -+ } -+ -+ mutex_unlock(&wm->codec_mutex); -+ return 0; -+} -+ -+/** -+ * wm97xx_ts_input_close - Close the touch screen input device. -+ * @idev: Input device to be closed. -+ * -+ * Called by the input sub system to close a wm97xx touchscreen device. -+ * Kills the touchscreen thread and stops the touch digitiser. -+ */ -+ -+static void wm97xx_ts_input_close(struct input_dev *idev) -+{ -+ struct wm97xx *wm = (struct wm97xx *) idev->private; -+ -+ mutex_lock(&wm->codec_mutex); -+ if (--wm->ts_use_count == 0) { -+ /* destroy workqueues and free irqs */ -+ if (wm->pen_irq) { -+ free_irq(wm->pen_irq, wm); -+ destroy_workqueue(wm->pen_irq_workq); -+ } -+ -+ /* kill thread */ -+ if (wm->ts_task) { -+ wm->ts_task = NULL; -+ wm->pen_is_down = 1; -+ wake_up_interruptible(&wm->pen_irq_wait); -+ wait_for_completion(&wm->ts_exit); -+ wm->pen_is_down = 0; -+ } -+ -+ /* stop digitiser */ -+ wm->codec->digitiser_ioctl(wm, WM97XX_DIG_STOP); -+ if (wm->mach_ops && wm->mach_ops->acc_enabled) -+ wm->codec->acc_enable(wm, 0); -+ } -+ mutex_unlock(&wm->codec_mutex); -+} -+ -+static int wm97xx_bus_match(struct device *dev, struct device_driver *drv) -+{ -+ return !(strcmp(dev->bus_id,drv->name)); -+} -+ -+/* -+ * The AC97 audio driver will do all the Codec suspend and resume -+ * tasks. This is just for anything machine specific or extra. -+ */ -+static int wm97xx_bus_suspend(struct device *dev, pm_message_t state) -+{ -+ int ret = 0; -+ -+ if (dev->driver && dev->driver->suspend) -+ ret = dev->driver->suspend(dev, state); -+ -+ return ret; -+} -+ -+static int wm97xx_bus_resume(struct device *dev) -+{ -+ int ret = 0; -+ -+ if (dev->driver && dev->driver->resume) -+ ret = dev->driver->resume(dev); -+ -+ return ret; -+} -+ -+struct bus_type wm97xx_bus_type = { -+ .name = "wm97xx", -+ .match = wm97xx_bus_match, -+ .suspend = wm97xx_bus_suspend, -+ .resume = wm97xx_bus_resume, -+}; -+ -+static void wm97xx_release(struct device *dev) -+{ -+ kfree(dev); -+} -+ -+static int wm97xx_probe(struct device *dev) -+{ -+ struct wm97xx* wm; -+ int ret = 0, id = 0; -+ -+ if (!(wm = kzalloc(sizeof(struct wm97xx), GFP_KERNEL))) -+ return -ENOMEM; -+ mutex_init(&wm->codec_mutex); -+ -+ init_waitqueue_head(&wm->pen_irq_wait); -+ wm->dev = dev; -+ dev->driver_data = wm; -+ wm->ac97 = to_ac97_t(dev); -+ -+ /* check that we have a supported codec */ -+ if ((id = wm97xx_reg_read(wm, AC97_VENDOR_ID1)) != WM97XX_ID1) { -+ err("could not find a wm97xx, found a %x instead\n", id); -+ kfree(wm); -+ return -ENODEV; -+ } -+ -+ wm->id = wm97xx_reg_read(wm, AC97_VENDOR_ID2); -+ if(wm->id != wm97xx_codec.id) { -+ err("could not find a the selected codec, please build for wm97%2x", wm->id & 0xff); -+ kfree(wm); -+ return -ENODEV; -+ } -+ -+ if((wm->input_dev = input_allocate_device()) == NULL) { -+ kfree(wm); -+ return -ENOMEM; -+ } -+ -+ /* set up touch configuration */ -+ info("detected a wm97%2x codec", wm->id & 0xff); -+ wm->input_dev->name = "wm97xx touchscreen"; -+ wm->input_dev->open = wm97xx_ts_input_open; -+ wm->input_dev->close = wm97xx_ts_input_close; -+ set_bit(EV_ABS, wm->input_dev->evbit); -+ set_bit(ABS_X, wm->input_dev->absbit); -+ set_bit(ABS_Y, wm->input_dev->absbit); -+ set_bit(ABS_PRESSURE, wm->input_dev->absbit); -+ wm->input_dev->absmax[ABS_X] = abs_x[1]; -+ wm->input_dev->absmax[ABS_Y] = abs_y[1]; -+ wm->input_dev->absmax[ABS_PRESSURE] = abs_p[1]; -+ wm->input_dev->absmin[ABS_X] = abs_x[0]; -+ wm->input_dev->absmin[ABS_Y] = abs_y[0]; -+ wm->input_dev->absmin[ABS_PRESSURE] = abs_p[0]; -+ wm->input_dev->absfuzz[ABS_X] = abs_x[2]; -+ wm->input_dev->absfuzz[ABS_Y] = abs_y[2]; -+ wm->input_dev->absfuzz[ABS_PRESSURE] = abs_p[2]; -+ wm->input_dev->private = wm; -+ wm->codec = &wm97xx_codec; -+ if((ret = input_register_device(wm->input_dev)) < 0) { -+ kfree(wm); -+ return -ENOMEM; -+ } -+ -+ if(aux_sys) -+ wm97xx_sys_add(dev); -+ -+ /* set up physical characteristics */ -+ wm->codec->digitiser_ioctl(wm, WM97XX_PHY_INIT); -+ -+ /* load gpio cache */ -+ wm->gpio[0] = wm97xx_reg_read(wm, AC97_GPIO_CFG); -+ wm->gpio[1] = wm97xx_reg_read(wm, AC97_GPIO_POLARITY); -+ wm->gpio[2] = wm97xx_reg_read(wm, AC97_GPIO_STICKY); -+ wm->gpio[3] = wm97xx_reg_read(wm, AC97_GPIO_WAKEUP); -+ wm->gpio[4] = wm97xx_reg_read(wm, AC97_GPIO_STATUS); -+ wm->gpio[5] = wm97xx_reg_read(wm, AC97_MISC_AFE); -+ -+ /* register our battery device */ -+ if (!(wm->battery_dev = kzalloc(sizeof(struct device), GFP_KERNEL))) { -+ ret = -ENOMEM; -+ goto batt_err; -+ } -+ wm->battery_dev->bus = &wm97xx_bus_type; -+ strcpy(wm->battery_dev->bus_id,"wm97xx-battery"); -+ wm->battery_dev->driver_data = wm; -+ wm->battery_dev->parent = dev; -+ wm->battery_dev->release = wm97xx_release; -+ if((ret = device_register(wm->battery_dev)) < 0) -+ goto batt_reg_err; -+ -+ /* register our extended touch device (for machine specific extensions) */ -+ if (!(wm->touch_dev = kzalloc(sizeof(struct device), GFP_KERNEL))) { -+ ret = -ENOMEM; -+ goto touch_err; -+ } -+ wm->touch_dev->bus = &wm97xx_bus_type; -+ strcpy(wm->touch_dev->bus_id,"wm97xx-touchscreen"); -+ wm->touch_dev->driver_data = wm; -+ wm->touch_dev->parent = dev; -+ wm->touch_dev->release = wm97xx_release; -+ if((ret = device_register(wm->touch_dev)) < 0) -+ goto touch_reg_err; -+ -+ return ret; -+ -+touch_reg_err: -+ kfree(wm->touch_dev); -+touch_err: -+ device_unregister(wm->battery_dev); -+batt_reg_err: -+ kfree(wm->battery_dev); -+batt_err: -+ input_unregister_device(wm->input_dev); -+ kfree(wm); -+ return ret; -+} -+ -+static int wm97xx_remove(struct device *dev) -+{ -+ struct wm97xx *wm = dev_get_drvdata(dev); -+ -+ /* Stop touch reader thread */ -+ if (wm->ts_task) { -+ wm->ts_task = NULL; -+ wm->pen_is_down = 1; -+ wake_up_interruptible(&wm->pen_irq_wait); -+ wait_for_completion(&wm->ts_exit); -+ } -+ device_unregister(wm->battery_dev); -+ device_unregister(wm->touch_dev); -+ input_unregister_device(wm->input_dev); -+ -+ if(aux_sys) -+ wm97xx_sys_remove(dev); -+ -+ kfree(wm); -+ return 0; -+} -+ -+#ifdef CONFIG_PM -+int wm97xx_resume(struct device* dev) -+{ -+ struct wm97xx *wm = dev_get_drvdata(dev); -+ -+ /* restore digitiser and gpio's */ -+ if(wm->id == WM9713_ID2) { -+ wm97xx_reg_write(wm, AC97_WM9713_DIG1, wm->dig[0]); -+ wm97xx_reg_write(wm, 0x5a, wm->misc); -+ if(wm->ts_use_count) { -+ u16 reg = wm97xx_reg_read(wm, AC97_EXTENDED_MID) & 0x7fff; -+ wm97xx_reg_write(wm, AC97_EXTENDED_MID, reg); -+ } -+ } -+ -+ wm97xx_reg_write(wm, AC97_WM9713_DIG2, wm->dig[1]); -+ wm97xx_reg_write(wm, AC97_WM9713_DIG3, wm->dig[2]); -+ -+ wm97xx_reg_write(wm, AC97_GPIO_CFG, wm->gpio[0]); -+ wm97xx_reg_write(wm, AC97_GPIO_POLARITY, wm->gpio[1]); -+ wm97xx_reg_write(wm, AC97_GPIO_STICKY, wm->gpio[2]); -+ wm97xx_reg_write(wm, AC97_GPIO_WAKEUP, wm->gpio[3]); -+ wm97xx_reg_write(wm, AC97_GPIO_STATUS, wm->gpio[4]); -+ wm97xx_reg_write(wm, AC97_MISC_AFE, wm->gpio[5]); -+ -+ return 0; -+} -+ -+#else -+#define wm97xx_resume NULL -+#endif -+ -+int wm97xx_register_mach_ops(struct wm97xx *wm, struct wm97xx_mach_ops *mach_ops) -+{ -+ mutex_lock(&wm->codec_mutex); -+ if(wm->mach_ops) { -+ mutex_unlock(&wm->codec_mutex); -+ return -EINVAL; -+ } -+ wm->mach_ops = mach_ops; -+ mutex_unlock(&wm->codec_mutex); -+ return 0; -+} -+ -+void wm97xx_unregister_mach_ops(struct wm97xx *wm) -+{ -+ mutex_lock(&wm->codec_mutex); -+ wm->mach_ops = NULL; -+ mutex_unlock(&wm->codec_mutex); -+} -+ -+static struct device_driver wm97xx_driver = { -+ .name = "ac97", -+ .bus = &ac97_bus_type, -+ .owner = THIS_MODULE, -+ .probe = wm97xx_probe, -+ .remove = wm97xx_remove, -+ .resume = wm97xx_resume, -+}; -+ -+static int __init wm97xx_init(void) -+{ -+ int ret; -+ -+ info("version %s liam.girdwood@wolfsonmicro.com", WM_CORE_VERSION); -+ if((ret = bus_register(&wm97xx_bus_type)) < 0) -+ return ret; -+ return driver_register(&wm97xx_driver); -+} -+ -+static void __exit wm97xx_exit(void) -+{ -+ driver_unregister(&wm97xx_driver); -+ bus_unregister(&wm97xx_bus_type); -+} -+ -+EXPORT_SYMBOL_GPL(wm97xx_get_gpio); -+EXPORT_SYMBOL_GPL(wm97xx_set_gpio); -+EXPORT_SYMBOL_GPL(wm97xx_config_gpio); -+EXPORT_SYMBOL_GPL(wm97xx_read_aux_adc); -+EXPORT_SYMBOL_GPL(wm97xx_reg_read); -+EXPORT_SYMBOL_GPL(wm97xx_reg_write); -+EXPORT_SYMBOL_GPL(wm97xx_bus_type); -+EXPORT_SYMBOL_GPL(wm97xx_register_mach_ops); -+EXPORT_SYMBOL_GPL(wm97xx_unregister_mach_ops); -+ -+module_init(wm97xx_init); -+module_exit(wm97xx_exit); -+ -+/* Module information */ -+MODULE_AUTHOR("Liam Girdwood, liam.girdwood@wolfsonmicro.com, www.wolfsonmicro.com"); -+MODULE_DESCRIPTION("WM97xx Core - Touch Screen / AUX ADC / GPIO Driver"); -+MODULE_LICENSE("GPL"); -Index: linux-2.6.17/include/linux/wm97xx.h -=================================================================== ---- /dev/null 1970-01-01 00:00:00.000000000 +0000 -+++ linux-2.6.17/include/linux/wm97xx.h 2006-09-19 20:36:47.973052250 +0200 -@@ -0,0 +1,291 @@ -+ -+/* -+ * Register bits and API for Wolfson WM97xx series of codecs -+ */ -+ -+#ifndef _LINUX_WM97XX_H -+#define _LINUX_WM97XX_H -+ -+#include <sound/driver.h> -+#include <sound/core.h> -+#include <sound/pcm.h> -+#include <sound/ac97_codec.h> -+#include <sound/initval.h> -+#include <linux/types.h> -+#include <linux/list.h> -+#include <linux/input.h> /* Input device layer */ -+ -+/* -+ * WM97xx AC97 Touchscreen registers -+ */ -+#define AC97_WM97XX_DIGITISER1 0x76 -+#define AC97_WM97XX_DIGITISER2 0x78 -+#define AC97_WM97XX_DIGITISER_RD 0x7a -+#define AC97_WM9713_DIG1 0x74 -+#define AC97_WM9713_DIG2 AC97_WM97XX_DIGITISER1 -+#define AC97_WM9713_DIG3 AC97_WM97XX_DIGITISER2 -+ -+/* -+ * WM97xx register bits -+ */ -+#define WM97XX_POLL 0x8000 /* initiate a polling measurement */ -+#define WM97XX_ADCSEL_X 0x1000 /* x coord measurement */ -+#define WM97XX_ADCSEL_Y 0x2000 /* y coord measurement */ -+#define WM97XX_ADCSEL_PRES 0x3000 /* pressure measurement */ -+#define WM97XX_ADCSEL_MASK 0x7000 -+#define WM97XX_COO 0x0800 /* enable coordinate mode */ -+#define WM97XX_CTC 0x0400 /* enable continuous mode */ -+#define WM97XX_CM_RATE_93 0x0000 /* 93.75Hz continuous rate */ -+#define WM97XX_CM_RATE_187 0x0100 /* 187.5Hz continuous rate */ -+#define WM97XX_CM_RATE_375 0x0200 /* 375Hz continuous rate */ -+#define WM97XX_CM_RATE_750 0x0300 /* 750Hz continuous rate */ -+#define WM97XX_CM_RATE_8K 0x00f0 /* 8kHz continuous rate */ -+#define WM97XX_CM_RATE_12K 0x01f0 /* 12kHz continuous rate */ -+#define WM97XX_CM_RATE_24K 0x02f0 /* 24kHz continuous rate */ -+#define WM97XX_CM_RATE_48K 0x03f0 /* 48kHz continuous rate */ -+#define WM97XX_CM_RATE_MASK 0x03f0 -+#define WM97XX_RATE(i) (((i & 3) << 8) | ((i & 4) ? 0xf0 : 0)) -+#define WM97XX_DELAY(i) ((i << 4) & 0x00f0) /* sample delay times */ -+#define WM97XX_DELAY_MASK 0x00f0 -+#define WM97XX_SLEN 0x0008 /* slot read back enable */ -+#define WM97XX_SLT(i) ((i - 5) & 0x7) /* touchpanel slot selection (5-11) */ -+#define WM97XX_SLT_MASK 0x0007 -+#define WM97XX_PRP_DETW 0x4000 /* pen detect on, digitiser off, wake up */ -+#define WM97XX_PRP_DET 0x8000 /* pen detect on, digitiser off, no wake up */ -+#define WM97XX_PRP_DET_DIG 0xc000 /* pen detect on, digitiser on */ -+#define WM97XX_RPR 0x2000 /* wake up on pen down */ -+#define WM97XX_PEN_DOWN 0x8000 /* pen is down */ -+#define WM97XX_ADCSRC_MASK 0x7000 /* ADC source mask */ -+ -+#define WM97XX_AUX_ID1 0x8001 -+#define WM97XX_AUX_ID2 0x8002 -+#define WM97XX_AUX_ID3 0x8003 -+#define WM97XX_AUX_ID4 0x8004 -+ -+ -+/* WM9712 Bits */ -+#define WM9712_45W 0x1000 /* set for 5-wire touchscreen */ -+#define WM9712_PDEN 0x0800 /* measure only when pen down */ -+#define WM9712_WAIT 0x0200 /* wait until adc is read before next sample */ -+#define WM9712_PIL 0x0100 /* current used for pressure measurement. set 400uA else 200uA */ -+#define WM9712_MASK_HI 0x0040 /* hi on mask pin (47) stops conversions */ -+#define WM9712_MASK_EDGE 0x0080 /* rising/falling edge on pin delays sample */ -+#define WM9712_MASK_SYNC 0x00c0 /* rising/falling edge on mask initiates sample */ -+#define WM9712_RPU(i) (i&0x3f) /* internal pull up on pen detect (64k / rpu) */ -+#define WM9712_PD(i) (0x1 << i) /* power management */ -+ -+/* WM9712 Registers */ -+#define AC97_WM9712_POWER 0x24 -+#define AC97_WM9712_REV 0x58 -+ -+/* WM9705 Bits */ -+#define WM9705_PDEN 0x1000 /* measure only when pen is down */ -+#define WM9705_PINV 0x0800 /* inverts sense of pen down output */ -+#define WM9705_BSEN 0x0400 /* BUSY flag enable, pin47 is 1 when busy */ -+#define WM9705_BINV 0x0200 /* invert BUSY (pin47) output */ -+#define WM9705_WAIT 0x0100 /* wait until adc is read before next sample */ -+#define WM9705_PIL 0x0080 /* current used for pressure measurement. set 400uA else 200uA */ -+#define WM9705_PHIZ 0x0040 /* set PHONE and PCBEEP inputs to high impedance */ -+#define WM9705_MASK_HI 0x0010 /* hi on mask stops conversions */ -+#define WM9705_MASK_EDGE 0x0020 /* rising/falling edge on pin delays sample */ -+#define WM9705_MASK_SYNC 0x0030 /* rising/falling edge on mask initiates sample */ -+#define WM9705_PDD(i) (i & 0x000f) /* pen detect comparator threshold */ -+ -+ -+/* WM9713 Bits */ -+#define WM9713_PDPOL 0x0400 /* Pen down polarity */ -+#define WM9713_POLL 0x0200 /* initiate a polling measurement */ -+#define WM9713_CTC 0x0100 /* enable continuous mode */ -+#define WM9713_ADCSEL_X 0x0002 /* X measurement */ -+#define WM9713_ADCSEL_Y 0x0004 /* Y measurement */ -+#define WM9713_ADCSEL_PRES 0x0008 /* Pressure measurement */ -+#define WM9713_COO 0x0001 /* enable coordinate mode */ -+#define WM9713_PDEN 0x0800 /* measure only when pen down */ -+#define WM9713_ADCSEL_MASK 0x00fe /* ADC selection mask */ -+#define WM9713_WAIT 0x0200 /* coordinate wait */ -+ -+/* AUX ADC ID's */ -+#define TS_COMP1 0x0 -+#define TS_COMP2 0x1 -+#define TS_BMON 0x2 -+#define TS_WIPER 0x3 -+ -+/* ID numbers */ -+#define WM97XX_ID1 0x574d -+#define WM9712_ID2 0x4c12 -+#define WM9705_ID2 0x4c05 -+#define WM9713_ID2 0x4c13 -+ -+/* Codec GPIO's */ -+#define WM97XX_MAX_GPIO 16 -+#define WM97XX_GPIO_1 (1 << 1) -+#define WM97XX_GPIO_2 (1 << 2) -+#define WM97XX_GPIO_3 (1 << 3) -+#define WM97XX_GPIO_4 (1 << 4) -+#define WM97XX_GPIO_5 (1 << 5) -+#define WM97XX_GPIO_6 (1 << 6) -+#define WM97XX_GPIO_7 (1 << 7) -+#define WM97XX_GPIO_8 (1 << 8) -+#define WM97XX_GPIO_9 (1 << 9) -+#define WM97XX_GPIO_10 (1 << 10) -+#define WM97XX_GPIO_11 (1 << 11) -+#define WM97XX_GPIO_12 (1 << 12) -+#define WM97XX_GPIO_13 (1 << 13) -+#define WM97XX_GPIO_14 (1 << 14) -+#define WM97XX_GPIO_15 (1 << 15) -+ -+ -+#define AC97_LINK_FRAME 21 /* time in uS for AC97 link frame */ -+ -+ -+/*---------------- Return codes from sample reading functions ---------------*/ -+ -+/* More data is available; call the sample gathering function again */ -+#define RC_AGAIN 0x00000001 -+/* The returned sample is valid */ -+#define RC_VALID 0x00000002 -+/* The pen is up (the first RC_VALID without RC_PENUP means pen is down) */ -+#define RC_PENUP 0x00000004 -+/* The pen is down (RC_VALID implies RC_PENDOWN, but sometimes it is helpful -+ to tell the handler that the pen is down but we don't know yet his coords, -+ so the handler should not sleep or wait for pendown irq) */ -+#define RC_PENDOWN 0x00000008 -+ -+/* The wm97xx driver provides a private API for writing platform-specific -+ * drivers. -+ */ -+ -+/* The structure used to return arch specific sampled data into */ -+struct wm97xx_data { -+ int x; -+ int y; -+ int p; -+}; -+ -+/* Codec GPIO status -+ */ -+typedef enum { -+ WM97XX_GPIO_HIGH, -+ WM97XX_GPIO_LOW -+} wm97xx_gpio_status_t; -+ -+/* Codec GPIO direction -+ */ -+typedef enum { -+ WM97XX_GPIO_IN, -+ WM97XX_GPIO_OUT -+} wm97xx_gpio_dir_t; -+ -+/* Codec GPIO polarity -+ */ -+typedef enum { -+ WM97XX_GPIO_POL_HIGH, -+ WM97XX_GPIO_POL_LOW -+} wm97xx_gpio_pol_t; -+ -+/* Codec GPIO sticky -+ */ -+typedef enum { -+ WM97XX_GPIO_STICKY, -+ WM97XX_GPIO_NOTSTICKY -+} wm97xx_gpio_sticky_t; -+ -+/* Codec GPIO wake -+ */ -+typedef enum { -+ WM97XX_GPIO_WAKE, -+ WM97XX_GPIO_NOWAKE -+} wm97xx_gpio_wake_t; -+ -+ -+/* -+ * Digitiser ioctl commands -+ */ -+#define WM97XX_DIG_START 0x1 -+#define WM97XX_DIG_STOP 0x2 -+#define WM97XX_PHY_INIT 0x3 -+#define WM97XX_AUX_PREPARE 0x4 -+#define WM97XX_DIG_RESTORE 0x5 -+ -+struct wm97xx; -+extern struct wm97xx_codec_drv wm97xx_codec; -+ -+/* -+ * Codec driver interface - allows mapping to WM9705/12/13 and newer codecs -+ */ -+struct wm97xx_codec_drv { -+ u16 id; -+ char *name; -+ int (*poll_sample) (struct wm97xx *, int adcsel, int *sample); /* read 1 sample */ -+ int (*poll_touch) (struct wm97xx *, struct wm97xx_data *); /* read X,Y,[P] in poll */ -+ int (*digitiser_ioctl) (struct wm97xx *, int cmd); -+ int (*acc_enable) (struct wm97xx *, int enable); -+}; -+ -+ -+/* Machine specific and accelerated touch operations */ -+struct wm97xx_mach_ops { -+ -+ /* accelerated touch readback - coords are transmited on AC97 link */ -+ int acc_enabled; -+ void (*acc_pen_up) (struct wm97xx *); -+ int (*acc_pen_down) (struct wm97xx *); -+ int (*acc_startup) (struct wm97xx *); -+ void (*acc_shutdown) (struct wm97xx *); -+ -+ /* pre and post sample - can be used to minimise any analog noise */ -+ void (*pre_sample) (int); /* function to run before sampling */ -+ void (*post_sample) (int); /* function to run after sampling */ -+}; -+ -+struct wm97xx { -+ u16 dig[3], id, gpio[6], misc; /* Cached codec registers */ -+ u16 dig_save[3]; /* saved during aux reading */ -+ struct wm97xx_codec_drv *codec; /* attached codec driver*/ -+ struct input_dev* input_dev; /* touchscreen input device */ -+ ac97_t *ac97; /* ALSA codec access */ -+ struct device *dev; /* ALSA device */ -+ struct device *battery_dev; -+ struct device *touch_dev; -+ struct wm97xx_mach_ops *mach_ops; -+ struct mutex codec_mutex; -+ struct completion ts_init; -+ struct completion ts_exit; -+ struct task_struct *ts_task; -+ unsigned int pen_irq; /* Pen IRQ number in use */ -+ wait_queue_head_t pen_irq_wait; /* Pen IRQ wait queue */ -+ struct workqueue_struct *pen_irq_workq; -+ struct work_struct pen_event_work; -+ u16 acc_slot; /* AC97 slot used for acc touch data */ -+ u16 acc_rate; /* acc touch data rate */ -+ unsigned int ts_use_count; -+ unsigned pen_is_down:1; /* Pen is down */ -+ unsigned aux_waiting:1; /* aux measurement waiting */ -+ unsigned pen_probably_down:1; /* used in polling mode */ -+}; -+ -+/* Codec GPIO access (not supported on WM9705) -+ * This can be used to set/get codec GPIO and Virtual GPIO status. -+ */ -+wm97xx_gpio_status_t wm97xx_get_gpio(struct wm97xx *wm, u32 gpio); -+void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio, -+ wm97xx_gpio_status_t status); -+void wm97xx_config_gpio(struct wm97xx *wm, u32 gpio, -+ wm97xx_gpio_dir_t dir, -+ wm97xx_gpio_pol_t pol, -+ wm97xx_gpio_sticky_t sticky, -+ wm97xx_gpio_wake_t wake); -+ -+/* codec AC97 IO access */ -+int wm97xx_reg_read(struct wm97xx *wm, u16 reg); -+void wm97xx_reg_write(struct wm97xx *wm, u16 reg, u16 val); -+ -+/* aux adc readback */ -+int wm97xx_read_aux_adc(struct wm97xx *wm, u16 adcsel); -+ -+/* machine ops */ -+int wm97xx_register_mach_ops(struct wm97xx *, struct wm97xx_mach_ops *); -+void wm97xx_unregister_mach_ops(struct wm97xx *); -+ -+extern struct bus_type wm97xx_bus_type; -+#endif |