[patch,rfc] Support for touchscreen on sharp zaurus sl-5500
From: Pavel Machek
Date: Thu Jul 21 2005 - 00:32:34 EST
Hi!
This adds support for touchscreen of sharp zaurus sl-5500. I got the
patches from John Lenz <lenz@xxxxxxxxxxx>, but lots of copyrights are
Russell King. To do so, it needs to add quite a bit of
infrastructure. If there's better place for some code, please let me
know (I already moved touchscreen parts to drivers/input).
Pavel
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -36,6 +36,15 @@ config TOUCHSCREEN_CORGI
To compile this driver as a module, choose M here: the
module will be called ads7846_ts.
+config TOUCHSCREEN_COLLIE
+ tristate "Collie touchscreen (for Sharp SL-5500)"
+ depends on MCP_UCB1200 && INPUT
+ help
+ Say Y here to enable the driver for the touchscreen on the
+ Sharp SL-5500 series of PDAs.
+
+ If unsure, say N.
+
config TOUCHSCREEN_GUNZE
tristate "Gunze AHL-51S touchscreen"
select SERIO
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -6,6 +6,7 @@
obj-$(CONFIG_TOUCHSCREEN_BITSY) += h3600_ts_input.o
obj-$(CONFIG_TOUCHSCREEN_CORGI) += corgi_ts.o
+obj-$(CONFIG_TOUCHSCREEN_COLLIE)+= collie_ts.o
obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o
obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o
obj-$(CONFIG_TOUCHSCREEN_MTOUCH) += mtouch.o
diff --git a/drivers/input/touchscreen/collie_ts.c b/drivers/input/touchscreen/collie_ts.c
new file mode 100644
--- /dev/null
+++ b/drivers/input/touchscreen/collie_ts.c
@@ -0,0 +1,437 @@
+/*
+ * linux/drivers/input/touchscreen/collie_ts.c
+ *
+ * Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 21-Jan-2002 <jco@xxxxxx> :
+ *
+ * Added support for synchronous A/D mode. This mode is useful to
+ * avoid noise induced in the touchpanel by the LCD, provided that
+ * the UCB1x00 has a valid LCD sync signal routed to its ADCSYNC pin.
+ * It is important to note that the signal connected to the ADCSYNC
+ * pin should provide pulses even when the LCD is blanked, otherwise
+ * a pen touch needed to unblank the LCD will never be read.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/sched.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/input.h>
+#include <linux/device.h>
+#include <linux/slab.h>
+
+#include <asm/dma.h>
+#include <asm/semaphore.h>
+
+#include <asm/arch-sa1100/ucb1x00.h>
+
+
+struct ucb1x00_ts {
+ struct input_dev idev;
+ struct ucb1x00 *ucb;
+
+ struct semaphore irq_wait;
+ struct semaphore sem;
+ struct completion init_exit;
+ struct task_struct *rtask;
+ int use_count;
+ u16 x_res;
+ u16 y_res;
+
+ int restart:1;
+ int adcsync:1;
+};
+
+static int adcsync = UCB_NOSYNC;
+
+static inline void ucb1x00_ts_evt_add(struct ucb1x00_ts *ts, u16 pressure, u16 x, u16 y)
+{
+ input_report_abs(&ts->idev, ABS_X, x);
+ input_report_abs(&ts->idev, ABS_Y, y);
+ input_report_abs(&ts->idev, ABS_PRESSURE, pressure);
+ input_sync(&ts->idev);
+}
+
+static inline void ucb1x00_ts_event_release(struct ucb1x00_ts *ts)
+{
+ input_report_abs(&ts->idev, ABS_PRESSURE, 0);
+ input_sync(&ts->idev);
+}
+
+/*
+ * Switch to interrupt mode.
+ */
+static inline void ucb1x00_ts_mode_int(struct ucb1x00_ts *ts)
+{
+ int val = UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
+ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
+ UCB_TS_CR_MODE_INT;
+ if (ts->ucb->id == UCB_ID_1400_BUGGY)
+ val &= ~(UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW);
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR, val);
+}
+
+/*
+ * Switch to pressure mode, and read pressure. We don't need to wait
+ * here, since both plates are being driven.
+ */
+static inline unsigned int ucb1x00_ts_read_pressure(struct ucb1x00_ts *ts)
+{
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMX_POW | UCB_TS_CR_TSPX_POW |
+ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_GND |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+
+ return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_TSPY, ts->adcsync);
+}
+
+/*
+ * Switch to X position mode and measure Y plate. We switch the plate
+ * configuration in pressure mode, then switch to position mode. This
+ * gives a faster response time. Even so, we need to wait about 55us
+ * for things to stabilise.
+ */
+static inline unsigned int ucb1x00_ts_read_xpos(struct ucb1x00_ts *ts)
+{
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
+ UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
+
+ udelay(55);
+
+ return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_TSPY, ts->adcsync);
+}
+
+/*
+ * Switch to Y position mode and measure X plate. We switch the plate
+ * configuration in pressure mode, then switch to position mode. This
+ * gives a faster response time. Even so, we need to wait about 55us
+ * for things to stabilise.
+ */
+static inline unsigned int ucb1x00_ts_read_ypos(struct ucb1x00_ts *ts)
+{
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
+ UCB_TS_CR_MODE_POS | UCB_TS_CR_BIAS_ENA);
+
+ udelay(55);
+
+ return ucb1x00_adc_read(ts->ucb, UCB_ADC_INP_TSPX, ts->adcsync);
+}
+
+/*
+ * Switch to X plate resistance mode. Set MX to ground, PX to
+ * supply. Measure current.
+ */
+static inline unsigned int ucb1x00_ts_read_xres(struct ucb1x00_ts *ts)
+{
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMX_GND | UCB_TS_CR_TSPX_POW |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+ return ucb1x00_adc_read(ts->ucb, 0, ts->adcsync);
+}
+
+/*
+ * Switch to Y plate resistance mode. Set MY to ground, PY to
+ * supply. Measure current.
+ */
+static inline unsigned int ucb1x00_ts_read_yres(struct ucb1x00_ts *ts)
+{
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR,
+ UCB_TS_CR_TSMY_GND | UCB_TS_CR_TSPY_POW |
+ UCB_TS_CR_MODE_PRES | UCB_TS_CR_BIAS_ENA);
+ return ucb1x00_adc_read(ts->ucb, 0, ts->adcsync);
+}
+
+/*
+ * This is a RT kernel thread that handles the ADC accesses
+ * (mainly so we can use semaphores in the UCB1200 core code
+ * to serialise accesses to the ADC). The UCB1400 access
+ * functions are expected to be able to sleep as well.
+ */
+static int ucb1x00_thread(void *_ts)
+{
+ struct ucb1x00_ts *ts = _ts;
+ struct task_struct *tsk = current;
+ int valid;
+
+ ts->rtask = tsk;
+
+ daemonize("ktsd");
+ /* only want to receive SIGKILL */
+ allow_signal(SIGKILL);
+
+ /*
+ * We run as a real-time thread. However, thus far
+ * this doesn't seem to be necessary.
+ */
+ tsk->policy = SCHED_FIFO;
+ tsk->rt_priority = 1;
+
+ complete(&ts->init_exit);
+
+ valid = 0;
+
+ for (;;) {
+ unsigned int x, y, p, val;
+
+ ts->restart = 0;
+
+ ucb1x00_adc_enable(ts->ucb);
+
+ x = ucb1x00_ts_read_xpos(ts);
+ y = ucb1x00_ts_read_ypos(ts);
+ p = ucb1x00_ts_read_pressure(ts);
+
+ /*
+ * Switch back to interrupt mode.
+ */
+ ucb1x00_ts_mode_int(ts);
+ ucb1x00_adc_disable(ts->ucb);
+
+ set_task_state(tsk, TASK_UNINTERRUPTIBLE);
+ schedule_timeout(HZ / 100);
+ if (signal_pending(tsk))
+ break;
+
+ ucb1x00_enable(ts->ucb);
+ val = ucb1x00_reg_read(ts->ucb, UCB_TS_CR);
+
+ if (val & (UCB_TS_CR_TSPX_LOW | UCB_TS_CR_TSMX_LOW)) {
+ ucb1x00_enable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_FALLING);
+ ucb1x00_disable(ts->ucb);
+
+ /*
+ * If we spat out a valid sample set last time,
+ * spit out a "pen off" sample here.
+ */
+ if (valid) {
+ ucb1x00_ts_event_release(ts);
+ valid = 0;
+ }
+
+ /*
+ * Since ucb1x00_enable_irq() might sleep due
+ * to the way the UCB1400 regs are accessed, we
+ * can't use set_task_state() before that call,
+ * and not changing state before enabling the
+ * interrupt is racy. A semaphore solves all
+ * those issues quite nicely.
+ */
+ down_interruptible(&ts->irq_wait);
+ } else {
+ ucb1x00_disable(ts->ucb);
+
+ /*
+ * Filtering is policy. Policy belongs in user
+ * space. We therefore leave it to user space
+ * to do any filtering they please.
+ */
+ if (!ts->restart) {
+ ucb1x00_ts_evt_add(ts, p, x, y);
+ valid = 1;
+ }
+
+ set_task_state(tsk, TASK_INTERRUPTIBLE);
+ schedule_timeout(HZ / 100);
+ }
+
+ if (signal_pending(tsk))
+ break;
+ }
+
+ ts->rtask = NULL;
+ complete_and_exit(&ts->init_exit, 0);
+}
+
+/*
+ * We only detect touch screen _touches_ with this interrupt
+ * handler, and even then we just schedule our task.
+ */
+static void ucb1x00_ts_irq(int idx, void *id)
+{
+ struct ucb1x00_ts *ts = id;
+ ucb1x00_disable_irq(ts->ucb, UCB_IRQ_TSPX, UCB_FALLING);
+ up(&ts->irq_wait);
+}
+
+static int ucb1x00_ts_open(struct input_dev *idev)
+{
+ struct ucb1x00_ts *ts = (struct ucb1x00_ts *)idev;
+ int ret = 0;
+
+ if (down_interruptible(&ts->sem))
+ return -EINTR;
+
+ if (ts->use_count++ != 0)
+ goto out;
+
+ if (ts->rtask)
+ panic("ucb1x00: rtask running?");
+
+ sema_init(&ts->irq_wait, 0);
+ ret = ucb1x00_hook_irq(ts->ucb, UCB_IRQ_TSPX, ucb1x00_ts_irq, ts);
+ if (ret < 0)
+ goto out;
+
+ /*
+ * If we do this at all, we should allow the user to
+ * measure and read the X and Y resistance at any time.
+ */
+ ucb1x00_adc_enable(ts->ucb);
+ ts->x_res = ucb1x00_ts_read_xres(ts);
+ ts->y_res = ucb1x00_ts_read_yres(ts);
+ ucb1x00_adc_disable(ts->ucb);
+
+ init_completion(&ts->init_exit);
+ ret = kernel_thread(ucb1x00_thread, ts, CLONE_KERNEL);
+ if (ret >= 0) {
+ wait_for_completion(&ts->init_exit);
+ ret = 0;
+ } else {
+ ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
+ }
+
+ out:
+ if (ret)
+ ts->use_count--;
+ up(&ts->sem);
+ return ret;
+}
+
+/*
+ * Release touchscreen resources. Disable IRQs.
+ */
+static void ucb1x00_ts_close(struct input_dev *idev)
+{
+ struct ucb1x00_ts *ts = (struct ucb1x00_ts *)idev;
+
+ down(&ts->sem);
+ if (--ts->use_count == 0) {
+ if (ts->rtask) {
+ send_sig(SIGKILL, ts->rtask, 1);
+ wait_for_completion(&ts->init_exit);
+ }
+
+ ucb1x00_enable(ts->ucb);
+ ucb1x00_free_irq(ts->ucb, UCB_IRQ_TSPX, ts);
+ ucb1x00_reg_write(ts->ucb, UCB_TS_CR, 0);
+ ucb1x00_disable(ts->ucb);
+ }
+ up(&ts->sem);
+}
+
+/*
+ * Initialisation.
+ */
+static int ucb1x00_ts_add(struct class_device *dev)
+{
+ struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);
+ struct ucb1x00_ts *ts;
+
+ ts = kmalloc(sizeof(struct ucb1x00_ts), GFP_KERNEL);
+ if (!ts)
+ return -ENOMEM;
+
+ memset(ts, 0, sizeof(struct ucb1x00_ts));
+
+ ts->ucb = ucb;
+ ts->adcsync = adcsync;
+ init_MUTEX(&ts->sem);
+
+ ts->idev.name = "Touchscreen panel";
+ ts->idev.id.product = ts->ucb->id;
+ ts->idev.open = ucb1x00_ts_open;
+ ts->idev.close = ucb1x00_ts_close;
+
+ __set_bit(EV_ABS, ts->idev.evbit);
+ __set_bit(ABS_X, ts->idev.absbit);
+ __set_bit(ABS_Y, ts->idev.absbit);
+ __set_bit(ABS_PRESSURE, ts->idev.absbit);
+
+ input_register_device(&ts->idev);
+
+ ucb->ts_data = ts;
+
+ return 0;
+}
+
+static void ucb1x00_ts_remove(struct class_device *dev)
+{
+ struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);
+ struct ucb1x00_ts *ts = ucb->ts_data;
+
+ input_unregister_device(&ts->idev);
+ kfree(ts);
+}
+
+static struct class_interface ucb1x00_ts_interface = {
+ .add = ucb1x00_ts_add,
+ .remove = ucb1x00_ts_remove,
+};
+
+static int __init ucb1x00_ts_init(void)
+{
+ return ucb1x00_register_interface(&ucb1x00_ts_interface);
+}
+
+static void __exit ucb1x00_ts_exit(void)
+{
+ ucb1x00_unregister_interface(&ucb1x00_ts_interface);
+}
+
+#ifndef MODULE
+
+/*
+ * Parse kernel command-line options.
+ *
+ * syntax : ucbts=[sync|nosync],...
+ */
+static int __init ucb1x00_ts_setup(char *str)
+{
+ char *p;
+
+ while ((p = strsep(&str, ",")) != NULL) {
+ if (strcmp(p, "sync") == 0)
+ adcsync = UCB_SYNC;
+ }
+
+ return 1;
+}
+
+__setup("ucbts=", ucb1x00_ts_setup);
+
+#else
+
+MODULE_PARM(adcsync, "i");
+MODULE_PARM_DESC(adcsync, "Enable use of ADCSYNC signal");
+
+#endif
+
+module_init(ucb1x00_ts_init);
+module_exit(ucb1x00_ts_exit);
+
+MODULE_AUTHOR("Russell King <rmk@xxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("UCB1x00 touchscreen driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -30,3 +30,20 @@ config IBM_ASM
endmenu
+menu "Multimedia Capabilities Port drivers"
+
+config MCP
+ tristate
+
+# Interface drivers
+config MCP_SA1100
+ tristate "Support SA1100 MCP interface"
+ depends on ARCH_SA1100
+ select MCP
+
+# Chip drivers
+config MCP_UCB1200
+ tristate "Support for UCB1200 / UCB1300"
+ depends on MCP
+
+endmenu
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -5,3 +5,11 @@ obj- := misc.o # Dummy rule to force bui
obj-$(CONFIG_IBM_ASM) += ibmasm/
obj-$(CONFIG_HDPU_FEATURES) += hdpuftrs/
+
+obj-$(CONFIG_MCP) += mcp-core.o
+obj-$(CONFIG_MCP_UCB1200) += ucb1x00-core.o
+
+obj-$(CONFIG_MCP_SA1100) += mcp-sa1100.o
+
+ucb1400-core-y := ucb1x00-core.o mcp-ac97.o
+obj-$(CONFIG_UCB1400_TS) += ucb1400-core.o ucb1x00-ts.o
diff --git a/drivers/misc/mcp-core.c b/drivers/misc/mcp-core.c
new file mode 100644
--- /dev/null
+++ b/drivers/misc/mcp-core.c
@@ -0,0 +1,257 @@
+/*
+ * linux/drivers/misc/mcp-core.c
+ *
+ * Copyright (C) 2001 Russell King
+ *
+ * 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.
+ *
+ * Generic MCP (Multimedia Communications Port) layer. All MCP locking
+ * is solely held within this file.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/smp.h>
+#include <linux/device.h>
+
+#include <asm/dma.h>
+#include <asm/system.h>
+
+#include <asm/arch-sa1100/mcp.h>
+
+#define to_mcp(d) ((struct mcp *)(d)->platform_data)
+#define to_mcp_driver(d) container_of(d, struct mcp_driver, drv)
+
+static int mcp_bus_match(struct device *dev, struct device_driver *drv)
+{
+ return 1;
+}
+
+static int mcp_bus_probe(struct device *dev)
+{
+ struct mcp *mcp = to_mcp(dev);
+ struct mcp_driver *drv = to_mcp_driver(dev->driver);
+
+ return drv->probe(mcp);
+}
+
+static int mcp_bus_remove(struct device *dev)
+{
+ struct mcp *mcp = to_mcp(dev);
+ struct mcp_driver *drv = to_mcp_driver(dev->driver);
+
+ drv->remove(mcp);
+ return 0;
+}
+
+static int mcp_bus_suspend(struct device *dev, u32 state)
+{
+ struct mcp *mcp = to_mcp(dev);
+ int ret = 0;
+
+ if (dev->driver) {
+ struct mcp_driver *drv = to_mcp_driver(dev->driver);
+
+ ret = drv->suspend(mcp, state);
+ }
+ return ret;
+}
+
+static int mcp_bus_resume(struct device *dev)
+{
+ struct mcp *mcp = to_mcp(dev);
+ int ret = 0;
+
+ if (dev->driver) {
+ struct mcp_driver *drv = to_mcp_driver(dev->driver);
+
+ ret = drv->resume(mcp);
+ }
+ return ret;
+}
+
+static struct bus_type mcp_bus_type = {
+ .name = "mcp",
+ .match = mcp_bus_match,
+ .suspend = mcp_bus_suspend,
+ .resume = mcp_bus_resume,
+};
+
+/**
+ * mcp_set_telecom_divisor - set the telecom divisor
+ * @mcp: MCP interface structure
+ * @div: SIB clock divisor
+ *
+ * Set the telecom divisor on the MCP interface. The resulting
+ * sample rate is SIBCLOCK/div.
+ */
+void mcp_set_telecom_divisor(struct mcp *mcp, unsigned int div)
+{
+ spin_lock_irq(&mcp->lock);
+ mcp->set_telecom_divisor(mcp, div);
+ spin_unlock_irq(&mcp->lock);
+}
+
+/**
+ * mcp_set_audio_divisor - set the audio divisor
+ * @mcp: MCP interface structure
+ * @div: SIB clock divisor
+ *
+ * Set the audio divisor on the MCP interface.
+ */
+void mcp_set_audio_divisor(struct mcp *mcp, unsigned int div)
+{
+ spin_lock_irq(&mcp->lock);
+ mcp->set_audio_divisor(mcp, div);
+ spin_unlock_irq(&mcp->lock);
+}
+
+/**
+ * mcp_reg_write - write a device register
+ * @mcp: MCP interface structure
+ * @reg: 4-bit register index
+ * @val: 16-bit data value
+ *
+ * Write a device register. The MCP interface must be enabled
+ * to prevent this function hanging.
+ */
+void mcp_reg_write(struct mcp *mcp, unsigned int reg, unsigned int val)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mcp->lock, flags);
+ mcp->reg_write(mcp, reg, val);
+ spin_unlock_irqrestore(&mcp->lock, flags);
+}
+
+/**
+ * mcp_reg_read - read a device register
+ * @mcp: MCP interface structure
+ * @reg: 4-bit register index
+ *
+ * Read a device register and return its value. The MCP interface
+ * must be enabled to prevent this function hanging.
+ */
+unsigned int mcp_reg_read(struct mcp *mcp, unsigned int reg)
+{
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&mcp->lock, flags);
+ val = mcp->reg_read(mcp, reg);
+ spin_unlock_irqrestore(&mcp->lock, flags);
+
+ return val;
+}
+
+/**
+ * mcp_enable - enable the MCP interface
+ * @mcp: MCP interface to enable
+ *
+ * Enable the MCP interface. Each call to mcp_enable will need
+ * a corresponding call to mcp_disable to disable the interface.
+ */
+void mcp_enable(struct mcp *mcp)
+{
+ spin_lock_irq(&mcp->lock);
+ if (mcp->use_count++ == 0)
+ mcp->enable(mcp);
+ spin_unlock_irq(&mcp->lock);
+}
+
+/**
+ * mcp_disable - disable the MCP interface
+ * @mcp: MCP interface to disable
+ *
+ * Disable the MCP interface. The MCP interface will only be
+ * disabled once the number of calls to mcp_enable matches the
+ * number of calls to mcp_disable.
+ */
+void mcp_disable(struct mcp *mcp)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&mcp->lock, flags);
+ if (--mcp->use_count == 0)
+ mcp->disable(mcp);
+ spin_unlock_irqrestore(&mcp->lock, flags);
+}
+
+static void mcp_host_release(struct device *dev) {
+ struct mcp *mcp = dev->platform_data;
+ complete(&mcp->attached_device_released);
+}
+
+int mcp_host_register(struct mcp *mcp, struct device *parent)
+{
+ int ret;
+ struct device *dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+ memset(dev, 0, sizeof(*dev));
+ dev->platform_data = mcp;
+ dev->parent = parent;
+ dev->bus = &mcp_bus_type;
+ dev->dma_mask = parent->dma_mask;
+ dev->release = mcp_host_release;
+ strcpy(dev->bus_id, "mcp0");
+ mcp->attached_device = dev;
+ ret = device_register(dev);
+ if (ret) {
+ mcp->attached_device = NULL;
+ kfree(dev);
+ }
+ return ret;
+}
+
+void mcp_host_unregister(struct mcp *mcp)
+{
+ init_completion(&mcp->attached_device_released);
+ device_unregister(mcp->attached_device);
+ wait_for_completion(&mcp->attached_device_released);
+ kfree(mcp->attached_device);
+ mcp->attached_device = NULL;
+}
+
+int mcp_driver_register(struct mcp_driver *mcpdrv)
+{
+ mcpdrv->drv.bus = &mcp_bus_type;
+ mcpdrv->drv.probe = mcp_bus_probe;
+ mcpdrv->drv.remove = mcp_bus_remove;
+ return driver_register(&mcpdrv->drv);
+}
+
+void mcp_driver_unregister(struct mcp_driver *mcpdrv)
+{
+ driver_unregister(&mcpdrv->drv);
+}
+
+static int __init mcp_init(void)
+{
+ return bus_register(&mcp_bus_type);
+}
+
+static void __exit mcp_exit(void)
+{
+ bus_unregister(&mcp_bus_type);
+}
+
+module_init(mcp_init);
+module_exit(mcp_exit);
+
+EXPORT_SYMBOL(mcp_set_telecom_divisor);
+EXPORT_SYMBOL(mcp_set_audio_divisor);
+EXPORT_SYMBOL(mcp_reg_write);
+EXPORT_SYMBOL(mcp_reg_read);
+EXPORT_SYMBOL(mcp_enable);
+EXPORT_SYMBOL(mcp_disable);
+EXPORT_SYMBOL(mcp_host_register);
+EXPORT_SYMBOL(mcp_host_unregister);
+EXPORT_SYMBOL(mcp_driver_register);
+EXPORT_SYMBOL(mcp_driver_unregister);
+
+MODULE_AUTHOR("Russell King <rmk@xxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Core multimedia communications port driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/misc/mcp-sa1100.c b/drivers/misc/mcp-sa1100.c
new file mode 100644
--- /dev/null
+++ b/drivers/misc/mcp-sa1100.c
@@ -0,0 +1,287 @@
+/*
+ * linux/drivers/misc/mcp-sa1100.c
+ *
+ * Copyright (C) 2001 Russell King
+ *
+ * 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.
+ *
+ * SA1100 MCP (Multimedia Communications Port) driver.
+ *
+ * MCP read/write timeouts from Jordi Colomer, rehacked by rmk.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+
+#include <asm/dma.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/system.h>
+
+#include <asm/arch/assabet.h>
+
+#include <asm/arch-sa1100/mcp.h>
+
+
+static void
+mcp_sa1100_set_telecom_divisor(struct mcp *mcp, unsigned int divisor)
+{
+ unsigned int mccr0;
+
+ divisor /= 32;
+
+ mccr0 = Ser4MCCR0 & ~0x00007f00;
+ mccr0 |= divisor << 8;
+ Ser4MCCR0 = mccr0;
+}
+
+static void
+mcp_sa1100_set_audio_divisor(struct mcp *mcp, unsigned int divisor)
+{
+ unsigned int mccr0;
+
+ divisor /= 32;
+
+ mccr0 = Ser4MCCR0 & ~0x0000007f;
+ mccr0 |= divisor;
+ Ser4MCCR0 = mccr0;
+}
+
+/*
+ * Write data to the device. The bit should be set after 3 subframe
+ * times (each frame is 64 clocks). We wait a maximum of 6 subframes.
+ * We really should try doing something more productive while we
+ * wait.
+ */
+static void
+mcp_sa1100_write(struct mcp *mcp, unsigned int reg, unsigned int val)
+{
+ int ret = -ETIME;
+ int i;
+
+ Ser4MCDR2 = reg << 17 | MCDR2_Wr | (val & 0xffff);
+
+ for (i = 0; i < 2; i++) {
+ udelay(mcp->rw_timeout);
+ if (Ser4MCSR & MCSR_CWC) {
+ ret = 0;
+ break;
+ }
+ }
+
+ if (ret < 0)
+ printk(KERN_WARNING "mcp: write timed out\n");
+}
+
+/*
+ * Read data from the device. The bit should be set after 3 subframe
+ * times (each frame is 64 clocks). We wait a maximum of 6 subframes.
+ * We really should try doing something more productive while we
+ * wait.
+ */
+static unsigned int
+mcp_sa1100_read(struct mcp *mcp, unsigned int reg)
+{
+ int ret = -ETIME;
+ int i;
+
+ Ser4MCDR2 = reg << 17 | MCDR2_Rd;
+
+ for (i = 0; i < 2; i++) {
+ udelay(mcp->rw_timeout);
+ if (Ser4MCSR & MCSR_CRC) {
+ ret = Ser4MCDR2 & 0xffff;
+ break;
+ }
+ }
+
+ if (ret < 0)
+ printk(KERN_WARNING "mcp: read timed out\n");
+
+ return ret;
+}
+
+static void mcp_sa1100_enable(struct mcp *mcp)
+{
+ Ser4MCSR = -1;
+ Ser4MCCR0 |= MCCR0_MCE;
+}
+
+static void mcp_sa1100_disable(struct mcp *mcp)
+{
+ Ser4MCCR0 &= ~MCCR0_MCE;
+}
+
+/*
+ * Our methods.
+ */
+static struct mcp mcp_sa1100 = {
+ .owner = THIS_MODULE,
+ .lock = SPIN_LOCK_UNLOCKED,
+ .sclk_rate = 11981000,
+ .dma_audio_rd = DMA_Ser4MCP0Rd,
+ .dma_audio_wr = DMA_Ser4MCP0Wr,
+ .dma_telco_rd = DMA_Ser4MCP1Rd,
+ .dma_telco_wr = DMA_Ser4MCP1Wr,
+ .set_telecom_divisor = mcp_sa1100_set_telecom_divisor,
+ .set_audio_divisor = mcp_sa1100_set_audio_divisor,
+ .reg_write = mcp_sa1100_write,
+ .reg_read = mcp_sa1100_read,
+ .enable = mcp_sa1100_enable,
+ .disable = mcp_sa1100_disable,
+};
+
+static int mcp_sa1100_probe(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct mcp *mcp = &mcp_sa1100;
+ int ret;
+
+ if (!machine_is_adsbitsy() && !machine_is_assabet() &&
+ !machine_is_cerf() && !machine_is_flexanet() &&
+ !machine_is_freebird() && !machine_is_graphicsclient() &&
+ !machine_is_graphicsmaster() && !machine_is_lart() &&
+ !machine_is_omnimeter() && !machine_is_pfs168() &&
+ !machine_is_shannon() && !machine_is_simpad() &&
+ !machine_is_yopy() && !machine_is_collie()) {
+ printk(KERN_WARNING "MCP-sa1100: machine is not supported\n");
+ return -ENODEV;
+ }
+
+ if (!request_mem_region(0x80060000, 0x60, "sa11x0-mcp")) {
+ printk(KERN_ERR "MCP-sa1100: Unable to request memory region\n");
+ return -EBUSY;
+ }
+
+ mcp->me = dev;
+ dev_set_drvdata(dev, mcp);
+
+ if (machine_is_assabet()) {
+ ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
+ }
+
+ if (machine_is_collie()) {
+ GAFR &= ~(GPIO_GPIO(16));
+ GPDR |= GPIO_GPIO(16);
+ GPSR |= GPIO_GPIO(16);
+ }
+
+ /*
+ * Setup the PPC unit correctly.
+ */
+ PPDR &= ~PPC_RXD4;
+ PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
+ PSDR |= PPC_RXD4;
+ PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
+ PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
+
+ Ser4MCSR = -1;
+ Ser4MCCR1 = 0;
+ //Ser4MCCR0 = 0x00007f7f | MCCR0_ADM;
+ Ser4MCCR0 = MCCR0_ADM | MCCR0_ExtClk;
+
+ /*
+ * Calculate the read/write timeout (us) from the bit clock
+ * rate. This is the period for 3 64-bit frames. Always
+ * round this time up.
+ */
+ mcp->rw_timeout = (64 * 3 * 1000000 + mcp->sclk_rate - 1) /
+ mcp->sclk_rate;
+
+ ret = mcp_host_register(mcp, &pdev->dev);
+ if (ret != 0) {
+ release_mem_region(0x80060000, 0x60);
+ dev_set_drvdata(dev, NULL);
+ }
+
+ return ret;
+}
+
+static int mcp_sa1100_remove(struct device *dev)
+{
+ struct mcp *mcp = dev_get_drvdata(dev);
+
+ dev_set_drvdata(dev, NULL);
+
+ mcp_host_unregister(mcp);
+ release_mem_region(0x80060000, 0x60);
+
+ return 0;
+}
+
+struct mcp_sa1100_state {
+ u32 mccr0;
+ u32 mccr1;
+};
+
+static int mcp_sa1100_suspend(struct device *dev, pm_message_t state, u32 level)
+{
+ struct mcp_sa1100_state *s = (struct mcp_sa1100_state *)dev->power.saved_state;
+
+ if (!s) {
+ s = kmalloc(sizeof(struct mcp_sa1100_state), GFP_KERNEL);
+ dev->power.saved_state = (unsigned char *)s;
+ }
+
+ if (s) {
+ s->mccr0 = Ser4MCCR0;
+ s->mccr1 = Ser4MCCR1;
+ }
+
+ if (level == SUSPEND_DISABLE)
+ Ser4MCCR0 &= ~MCCR0_MCE;
+ return 0;
+}
+
+static int mcp_sa1100_resume(struct device *dev, u32 level)
+{
+ struct mcp_sa1100_state *s = (struct mcp_sa1100_state *)dev->power.saved_state;
+
+ if (s && level == RESUME_RESTORE_STATE) {
+ Ser4MCCR1 = s->mccr1;
+ Ser4MCCR0 = s->mccr0;
+
+ dev->power.saved_state = NULL;
+ kfree(s);
+ }
+ return 0;
+}
+
+/*
+ * The driver for the SA11x0 MCP port.
+ */
+static struct device_driver mcp_sa1100_driver = {
+ .name = "sa11x0-mcp",
+ .bus = &platform_bus_type,
+ .probe = mcp_sa1100_probe,
+ .remove = mcp_sa1100_remove,
+ .suspend = mcp_sa1100_suspend,
+ .resume = mcp_sa1100_resume,
+};
+
+/*
+ * This needs re-working
+ */
+static int __init mcp_sa1100_init(void)
+{
+ return driver_register(&mcp_sa1100_driver);
+}
+
+static void __exit mcp_sa1100_exit(void)
+{
+ driver_unregister(&mcp_sa1100_driver);
+}
+
+module_init(mcp_sa1100_init);
+module_exit(mcp_sa1100_exit);
+
+MODULE_AUTHOR("Russell King <rmk@xxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("SA11x0 multimedia communications port driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/misc/ucb1x00-core.c b/drivers/misc/ucb1x00-core.c
new file mode 100644
--- /dev/null
+++ b/drivers/misc/ucb1x00-core.c
@@ -0,0 +1,638 @@
+/*
+ * linux/drivers/misc/ucb1x00-core.c
+ *
+ * Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * 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.
+ *
+ * The UCB1x00 core driver provides basic services for handling IO,
+ * the ADC, interrupts, and accessing registers. It is designed
+ * such that everything goes through this layer, thereby providing
+ * a consistent locking methodology, as well as allowing the drivers
+ * to be used on other non-MCP-enabled hardware platforms.
+ *
+ * Note that all locks are private to this file. Nothing else may
+ * touch them.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+
+#include <asm/dma.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/arch-sa1100/ucb1x00.h>
+
+/**
+ * ucb1x00_io_set_dir - set IO direction
+ * @ucb: UCB1x00 structure describing chip
+ * @in: bitfield of IO pins to be set as inputs
+ * @out: bitfield of IO pins to be set as outputs
+ *
+ * Set the IO direction of the ten general purpose IO pins on
+ * the UCB1x00 chip. The @in bitfield has priority over the
+ * @out bitfield, in that if you specify a pin as both input
+ * and output, it will end up as an input.
+ *
+ * ucb1x00_enable must have been called to enable the comms
+ * before using this function.
+ *
+ * This function takes a spinlock, disabling interrupts.
+ */
+void ucb1x00_io_set_dir(struct ucb1x00 *ucb, unsigned int in, unsigned int out)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ucb->io_lock, flags);
+ ucb->io_dir |= out;
+ ucb->io_dir &= ~in;
+ spin_unlock_irqrestore(&ucb->io_lock, flags);
+
+ ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+}
+
+/**
+ * ucb1x00_io_write - set or clear IO outputs
+ * @ucb: UCB1x00 structure describing chip
+ * @set: bitfield of IO pins to set to logic '1'
+ * @clear: bitfield of IO pins to set to logic '0'
+ *
+ * Set the IO output state of the specified IO pins. The value
+ * is retained if the pins are subsequently configured as inputs.
+ * The @clear bitfield has priority over the @set bitfield -
+ * outputs will be cleared.
+ *
+ * ucb1x00_enable must have been called to enable the comms
+ * before using this function.
+ *
+ * This function takes a spinlock, disabling interrupts.
+ */
+void ucb1x00_io_write(struct ucb1x00 *ucb, unsigned int set, unsigned int clear)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&ucb->io_lock, flags);
+ ucb->io_out |= set;
+ ucb->io_out &= ~clear;
+ spin_unlock_irqrestore(&ucb->io_lock, flags);
+
+ ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
+}
+
+/**
+ * ucb1x00_io_read - read the current state of the IO pins
+ * @ucb: UCB1x00 structure describing chip
+ *
+ * Return a bitfield describing the logic state of the ten
+ * general purpose IO pins.
+ *
+ * ucb1x00_enable must have been called to enable the comms
+ * before using this function.
+ *
+ * This function does not take any semaphores or spinlocks.
+ */
+unsigned int ucb1x00_io_read(struct ucb1x00 *ucb)
+{
+ return ucb1x00_reg_read(ucb, UCB_IO_DATA);
+}
+
+/*
+ * UCB1300 data sheet says we must:
+ * 1. enable ADC => 5us (including reference startup time)
+ * 2. select input => 51*tsibclk => 4.3us
+ * 3. start conversion => 102*tsibclk => 8.5us
+ * (tsibclk = 1/11981000)
+ * Period between SIB 128-bit frames = 10.7us
+ */
+
+/**
+ * ucb1x00_adc_enable - enable the ADC converter
+ * @ucb: UCB1x00 structure describing chip
+ *
+ * Enable the ucb1x00 and ADC converter on the UCB1x00 for use.
+ * Any code wishing to use the ADC converter must call this
+ * function prior to using it.
+ *
+ * This function takes the ADC semaphore to prevent two or more
+ * concurrent uses, and therefore may sleep. As a result, it
+ * can only be called from process context, not interrupt
+ * context.
+ *
+ * You should release the ADC as soon as possible using
+ * ucb1x00_adc_disable.
+ */
+void ucb1x00_adc_enable(struct ucb1x00 *ucb)
+{
+ down(&ucb->adc_sem);
+
+ ucb->adc_cr |= UCB_ADC_ENA;
+
+ ucb1x00_enable(ucb);
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr);
+}
+
+/**
+ * ucb1x00_adc_read - read the specified ADC channel
+ * @ucb: UCB1x00 structure describing chip
+ * @adc_channel: ADC channel mask
+ * @sync: wait for syncronisation pulse.
+ *
+ * Start an ADC conversion and wait for the result. Note that
+ * synchronised ADC conversions (via the ADCSYNC pin) must wait
+ * until the trigger is asserted and the conversion is finished.
+ *
+ * This function currently spins waiting for the conversion to
+ * complete (2 frames max without sync).
+ *
+ * If called for a synchronised ADC conversion, it may sleep
+ * with the ADC semaphore held.
+ */
+unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync)
+{
+ unsigned int val;
+
+ if (sync)
+ adc_channel |= UCB_ADC_SYNC_ENA;
+
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr | adc_channel);
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr | adc_channel | UCB_ADC_START);
+
+ for (;;) {
+ val = ucb1x00_reg_read(ucb, UCB_ADC_DATA);
+ if (val & UCB_ADC_DAT_VAL)
+ break;
+ /* yield to other processes */
+ set_current_state(TASK_INTERRUPTIBLE);
+ schedule_timeout(1);
+ }
+
+ return UCB_ADC_DAT(val);
+}
+
+/**
+ * ucb1x00_adc_disable - disable the ADC converter
+ * @ucb: UCB1x00 structure describing chip
+ *
+ * Disable the ADC converter and release the ADC semaphore.
+ */
+void ucb1x00_adc_disable(struct ucb1x00 *ucb)
+{
+ ucb->adc_cr &= ~UCB_ADC_ENA;
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, ucb->adc_cr);
+ ucb1x00_disable(ucb);
+
+ up(&ucb->adc_sem);
+}
+
+/*
+ * UCB1x00 Interrupt handling.
+ *
+ * The UCB1x00 can generate interrupts when the SIBCLK is stopped.
+ * Since we need to read an internal register, we must re-enable
+ * SIBCLK to talk to the chip. We leave the clock running until
+ * we have finished processing all interrupts from the chip.
+ */
+static irqreturn_t ucb1x00_irq(int irqnr, void *devid, struct pt_regs *regs)
+{
+ struct ucb1x00 *ucb = devid;
+ struct ucb1x00_irq *irq;
+ unsigned int isr, i;
+
+ ucb1x00_enable(ucb);
+ isr = ucb1x00_reg_read(ucb, UCB_IE_STATUS);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, isr);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);
+
+ for (i = 0, irq = ucb->irq_handler; i < 16 && isr; i++, isr >>= 1, irq++)
+ if (isr & 1 && irq->fn)
+ irq->fn(i, irq->devid);
+ ucb1x00_disable(ucb);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * A restriction with interrupts exists when using the ucb1400, as
+ * the codec read/write routines may sleep while waiting for codec
+ * access completion and uses semaphores for access control to the
+ * AC97 bus. A complete codec read cycle could take anywhere from
+ * 60 to 100uSec so we *definitely* don't want to spin inside the
+ * interrupt handler waiting for codec access. So, we handle the
+ * interrupt by scheduling a RT kernel thread to run in process
+ * context instead of interrupt context.
+ */
+static int ucb1x00_thread(void *_ucb)
+{
+ struct task_struct *tsk = current;
+ DECLARE_WAITQUEUE(wait, tsk);
+ struct ucb1x00 *ucb = _ucb;
+
+ ucb->irq_task = tsk;
+ daemonize("kUCB1x00d");
+ allow_signal(SIGKILL);
+ tsk->policy = SCHED_FIFO;
+ tsk->rt_priority = 1;
+
+ add_wait_queue(&ucb->irq_wait, &wait);
+ set_task_state(tsk, TASK_INTERRUPTIBLE);
+ complete(&ucb->complete);
+
+ for (;;) {
+ if (signal_pending(tsk))
+ break;
+ schedule();
+ ucb1x00_irq(-1, ucb, NULL);
+ set_task_state(tsk, TASK_INTERRUPTIBLE);
+ enable_irq(ucb->irq);
+ }
+
+ remove_wait_queue(&ucb->irq_wait, &wait);
+ ucb->irq_task = NULL;
+ complete_and_exit(&ucb->complete, 0);
+}
+
+static irqreturn_t ucb1x00_threaded_irq(int irqnr, void *devid, struct pt_regs *regs)
+{
+ struct ucb1x00 *ucb = devid;
+ if (irqnr == ucb->irq) {
+ disable_irq(ucb->irq);
+ wake_up(&ucb->irq_wait);
+ return IRQ_HANDLED;
+ }
+ return IRQ_NONE;
+}
+
+/**
+ * ucb1x00_hook_irq - hook a UCB1x00 interrupt
+ * @ucb: UCB1x00 structure describing chip
+ * @idx: interrupt index
+ * @fn: function to call when interrupt is triggered
+ * @devid: device id to pass to interrupt handler
+ *
+ * Hook the specified interrupt. You can only register one handler
+ * for each interrupt source. The interrupt source is not enabled
+ * by this function; use ucb1x00_enable_irq instead.
+ *
+ * Interrupt handlers will be called with other interrupts enabled.
+ *
+ * Returns zero on success, or one of the following errors:
+ * -EINVAL if the interrupt index is invalid
+ * -EBUSY if the interrupt has already been hooked
+ */
+int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid)
+{
+ struct ucb1x00_irq *irq;
+ int ret = -EINVAL;
+
+ if (idx < 16) {
+ irq = ucb->irq_handler + idx;
+ ret = -EBUSY;
+
+ spin_lock_irq(&ucb->lock);
+ if (irq->fn == NULL) {
+ irq->devid = devid;
+ irq->fn = fn;
+ ret = 0;
+ }
+ spin_unlock_irq(&ucb->lock);
+ }
+ return ret;
+}
+
+/**
+ * ucb1x00_enable_irq - enable an UCB1x00 interrupt source
+ * @ucb: UCB1x00 structure describing chip
+ * @idx: interrupt index
+ * @edges: interrupt edges to enable
+ *
+ * Enable the specified interrupt to trigger on %UCB_RISING,
+ * %UCB_FALLING or both edges. The interrupt should have been
+ * hooked by ucb1x00_hook_irq.
+ */
+void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges)
+{
+ unsigned long flags;
+
+ if (idx < 16) {
+ spin_lock_irqsave(&ucb->lock, flags);
+ if (edges & UCB_RISING)
+ ucb->irq_ris_enbl |= 1 << idx;
+ if (edges & UCB_FALLING)
+ ucb->irq_fal_enbl |= 1 << idx;
+ spin_unlock_irqrestore(&ucb->lock, flags);
+
+ ucb1x00_enable(ucb);
+
+ /* This prevents spurious interrupts on the UCB1400 */
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 1 << idx);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);
+
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl);
+
+ ucb1x00_disable(ucb);
+ }
+}
+
+/**
+ * ucb1x00_disable_irq - disable an UCB1x00 interrupt source
+ * @ucb: UCB1x00 structure describing chip
+ * @edges: interrupt edges to disable
+ *
+ * Disable the specified interrupt triggering on the specified
+ * (%UCB_RISING, %UCB_FALLING or both) edges.
+ */
+void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges)
+{
+ unsigned long flags;
+
+ if (idx < 16) {
+ spin_lock_irqsave(&ucb->lock, flags);
+ if (edges & UCB_RISING)
+ ucb->irq_ris_enbl &= ~(1 << idx);
+ if (edges & UCB_FALLING)
+ ucb->irq_fal_enbl &= ~(1 << idx);
+ spin_unlock_irqrestore(&ucb->lock, flags);
+
+ ucb1x00_enable(ucb);
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl);
+ ucb1x00_disable(ucb);
+ }
+}
+
+/**
+ * ucb1x00_free_irq - disable and free the specified UCB1x00 interrupt
+ * @ucb: UCB1x00 structure describing chip
+ * @idx: interrupt index
+ * @devid: device id.
+ *
+ * Disable the interrupt source and remove the handler. devid must
+ * match the devid passed when hooking the interrupt.
+ *
+ * Returns zero on success, or one of the following errors:
+ * -EINVAL if the interrupt index is invalid
+ * -ENOENT if devid does not match
+ */
+int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid)
+{
+ struct ucb1x00_irq *irq;
+ int ret;
+
+ if (idx >= 16)
+ goto bad;
+
+ irq = ucb->irq_handler + idx;
+ ret = -ENOENT;
+
+ spin_lock_irq(&ucb->lock);
+ if (irq->devid == devid) {
+ ucb->irq_ris_enbl &= ~(1 << idx);
+ ucb->irq_fal_enbl &= ~(1 << idx);
+
+ irq->fn = NULL;
+ irq->devid = NULL;
+ ret = 0;
+ }
+ spin_unlock_irq(&ucb->lock);
+
+ ucb1x00_enable(ucb);
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, ucb->irq_ris_enbl);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, ucb->irq_fal_enbl);
+ ucb1x00_disable(ucb);
+
+ return ret;
+
+bad:
+ printk(KERN_ERR "Freeing bad UCB1x00 irq %d\n", idx);
+ return -EINVAL;
+}
+
+/*
+ * Try to probe our interrupt, rather than relying on lots of
+ * hard-coded machine dependencies. For reference, the expected
+ * IRQ mappings are:
+ *
+ * Machine Default IRQ
+ * adsbitsy IRQ_GPCIN4
+ * cerf IRQ_GPIO_UCB1200_IRQ
+ * flexanet IRQ_GPIO_GUI
+ * freebird IRQ_GPIO_FREEBIRD_UCB1300_IRQ
+ * graphicsclient ADS_EXT_IRQ(8)
+ * graphicsmaster ADS_EXT_IRQ(8)
+ * lart LART_IRQ_UCB1200
+ * omnimeter IRQ_GPIO23
+ * pfs168 IRQ_GPIO_UCB1300_IRQ
+ * simpad IRQ_GPIO_UCB1300_IRQ
+ * shannon SHANNON_IRQ_GPIO_IRQ_CODEC
+ * yopy IRQ_GPIO_UCB1200_IRQ
+ */
+static int ucb1x00_detect_irq(struct ucb1x00 *ucb)
+{
+ unsigned long mask;
+
+ mask = probe_irq_on();
+ if (!mask)
+ return NO_IRQ;
+
+ /*
+ * Enable the ADC interrupt.
+ */
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, UCB_IE_ADC);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, UCB_IE_ADC);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);
+
+ /*
+ * Cause an ADC interrupt.
+ */
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA);
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, UCB_ADC_ENA | UCB_ADC_START);
+
+ /*
+ * Wait for the conversion to complete.
+ */
+ while ((ucb1x00_reg_read(ucb, UCB_ADC_DATA) & UCB_ADC_DAT_VAL) == 0);
+ ucb1x00_reg_write(ucb, UCB_ADC_CR, 0);
+
+ /*
+ * Disable and clear interrupt.
+ */
+ ucb1x00_reg_write(ucb, UCB_IE_RIS, 0);
+ ucb1x00_reg_write(ucb, UCB_IE_FAL, 0);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0xffff);
+ ucb1x00_reg_write(ucb, UCB_IE_CLEAR, 0);
+
+ /*
+ * Read triggered interrupt.
+ */
+ return probe_irq_off(mask);
+}
+
+static int ucb1x00_probe(struct mcp *mcp)
+{
+ struct ucb1x00 *ucb;
+ unsigned int id;
+ int ret = -ENODEV;
+
+ mcp_enable(mcp);
+ id = mcp_reg_read(mcp, UCB_ID);
+
+ /*if (id != UCB_ID_1200 && id != UCB_ID_1300 && id != UCB_ID_1400) {
+ printk(KERN_WARNING "UCB1x00 ID not found: %04x\n", id);
+ goto err_disable;
+ }*/
+
+ ucb = kmalloc(sizeof(struct ucb1x00), GFP_KERNEL);
+ ret = -ENOMEM;
+ if (!ucb)
+ goto err_disable;
+
+ memset(ucb, 0, sizeof(struct ucb1x00));
+
+ ucb->cdev.class = &ucb1x00_class;
+ ucb->cdev.dev = mcp->attached_device;
+ strlcpy(ucb->cdev.class_id, "ucb1x00", sizeof(ucb->cdev.class_id));
+
+ spin_lock_init(&ucb->lock);
+ spin_lock_init(&ucb->io_lock);
+ sema_init(&ucb->adc_sem, 1);
+ init_waitqueue_head(&ucb->irq_wait);
+
+ ucb->mcp = mcp;
+ ucb->id = id;
+ /* distinguish between UCB1400 revs 1B and 2A */
+ if (id == UCB_ID_1400 && mcp_reg_read(mcp, 0x00) == 0x002a)
+ ucb->id = UCB_ID_1400_BUGGY;
+
+ ucb->irq = ucb1x00_detect_irq(ucb);
+ if (ucb->irq == NO_IRQ) {
+ printk(KERN_ERR "UCB1x00: IRQ probe failed\n");
+ ret = -ENODEV;
+ goto err_free;
+ }
+
+ ret = request_irq(ucb->irq,
+ id != UCB_ID_1400 ? ucb1x00_irq : ucb1x00_threaded_irq,
+ 0, "UCB1x00", ucb);
+ if (ret) {
+ printk(KERN_ERR "ucb1x00: unable to grab irq%d: %d\n",
+ ucb->irq, ret);
+ goto err_free;
+ }
+
+ set_irq_type(ucb->irq, IRQT_RISING);
+ mcp_set_drvdata(mcp, ucb);
+
+ ret = class_device_register(&ucb->cdev);
+
+ if (!ret && id == UCB_ID_1400) {
+ init_completion(&ucb->complete);
+ ret = kernel_thread(ucb1x00_thread, ucb, CLONE_KERNEL);
+ if (ret >= 0) {
+ wait_for_completion(&ucb->complete);
+ ret = 0;
+ }
+ }
+
+ if (ret) {
+ free_irq(ucb->irq, ucb);
+ err_free:
+ kfree(ucb);
+ }
+ err_disable:
+ mcp_disable(mcp);
+ return ret;
+}
+
+static void ucb1x00_remove(struct mcp *mcp)
+{
+ struct ucb1x00 *ucb = mcp_get_drvdata(mcp);
+
+ class_device_unregister(&ucb->cdev);
+ if (ucb->id == UCB_ID_1400 || ucb->id == UCB_ID_1400_BUGGY) {
+ send_sig(SIGKILL, ucb->irq_task, 1);
+ wait_for_completion(&ucb->complete);
+ }
+ free_irq(ucb->irq, ucb);
+}
+
+static void ucb1x00_release(struct class_device *dev)
+{
+ struct ucb1x00 *ucb = classdev_to_ucb1x00(dev);
+ kfree(ucb);
+}
+
+static struct class ucb1x00_class = {
+ .name = "ucb1x00",
+ .release = ucb1x00_release,
+};
+
+int ucb1x00_register_interface(struct class_interface *intf)
+{
+ intf->class = &ucb1x00_class;
+ return class_interface_register(intf);
+}
+
+void ucb1x00_unregister_interface(struct class_interface *intf)
+{
+ class_interface_unregister(intf);
+}
+
+static struct mcp_driver ucb1x00_driver = {
+ .drv = {
+ .name = "ucb1x00",
+ },
+ .probe = ucb1x00_probe,
+ .remove = ucb1x00_remove,
+};
+
+static int __init ucb1x00_init(void)
+{
+ int ret = class_register(&ucb1x00_class);
+ if (ret == 0) {
+ ret = mcp_driver_register(&ucb1x00_driver);
+ if (ret)
+ class_unregister(&ucb1x00_class);
+ }
+ return ret;
+}
+
+static void __exit ucb1x00_exit(void)
+{
+ mcp_driver_unregister(&ucb1x00_driver);
+ class_unregister(&ucb1x00_class);
+}
+
+module_init(ucb1x00_init);
+module_exit(ucb1x00_exit);
+
+EXPORT_SYMBOL(ucb1x00_class);
+
+EXPORT_SYMBOL(ucb1x00_io_set_dir);
+EXPORT_SYMBOL(ucb1x00_io_write);
+EXPORT_SYMBOL(ucb1x00_io_read);
+
+EXPORT_SYMBOL(ucb1x00_adc_enable);
+EXPORT_SYMBOL(ucb1x00_adc_read);
+EXPORT_SYMBOL(ucb1x00_adc_disable);
+
+EXPORT_SYMBOL(ucb1x00_hook_irq);
+EXPORT_SYMBOL(ucb1x00_free_irq);
+EXPORT_SYMBOL(ucb1x00_enable_irq);
+EXPORT_SYMBOL(ucb1x00_disable_irq);
+
+EXPORT_SYMBOL(ucb1x00_register_interface);
+EXPORT_SYMBOL(ucb1x00_unregister_interface);
+
+MODULE_AUTHOR("Russell King <rmk@xxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("UCB1x00 core driver");
+MODULE_LICENSE("GPL");
diff --git a/include/asm-arm/arch-sa1100/mcp.h b/include/asm-arm/arch-sa1100/mcp.h
new file mode 100644
--- /dev/null
+++ b/include/asm-arm/arch-sa1100/mcp.h
@@ -0,0 +1,65 @@
+/*
+ * linux/drivers/misc/mcp.h
+ *
+ * Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * 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.
+ */
+#ifndef MCP_H
+#define MCP_H
+
+#ifdef CONFIG_ARCH_SA1100
+#include <asm/dma.h>
+#endif
+
+struct mcp {
+ struct module *owner;
+ struct device *me;
+ spinlock_t lock;
+ int use_count;
+ unsigned int sclk_rate;
+#ifdef CONFIG_ARCH_SA1100
+ unsigned int rw_timeout;
+ dma_device_t dma_audio_rd;
+ dma_device_t dma_audio_wr;
+ dma_device_t dma_telco_rd;
+ dma_device_t dma_telco_wr;
+ void (*set_telecom_divisor)(struct mcp *, unsigned int);
+ void (*set_audio_divisor)(struct mcp *, unsigned int);
+#endif
+ void (*reg_write)(struct mcp *, unsigned int, unsigned int);
+ unsigned int (*reg_read)(struct mcp *, unsigned int);
+ void (*enable)(struct mcp *);
+ void (*disable)(struct mcp *);
+ struct device *attached_device;
+ struct completion attached_device_released;
+};
+
+void mcp_set_telecom_divisor(struct mcp *, unsigned int);
+void mcp_set_audio_divisor(struct mcp *, unsigned int);
+void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
+unsigned int mcp_reg_read(struct mcp *, unsigned int);
+void mcp_enable(struct mcp *);
+void mcp_disable(struct mcp *);
+#define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate)
+
+int mcp_host_register(struct mcp *, struct device *);
+void mcp_host_unregister(struct mcp *);
+
+struct mcp_driver {
+ struct device_driver drv;
+ int (*probe)(struct mcp *);
+ void (*remove)(struct mcp *);
+ int (*suspend)(struct mcp *, u32);
+ int (*resume)(struct mcp *);
+};
+
+int mcp_driver_register(struct mcp_driver *);
+void mcp_driver_unregister(struct mcp_driver *);
+
+#define mcp_get_drvdata(mcp) dev_get_drvdata((mcp)->attached_device)
+#define mcp_set_drvdata(mcp,d) dev_set_drvdata((mcp)->attached_device, d)
+
+#endif
diff --git a/include/asm-arm/arch-sa1100/ucb1x00.h b/include/asm-arm/arch-sa1100/ucb1x00.h
new file mode 100644
--- /dev/null
+++ b/include/asm-arm/arch-sa1100/ucb1x00.h
@@ -0,0 +1,270 @@
+/*
+ * linux/drivers/misc/ucb1x00.h
+ *
+ * Copyright (C) 2001 Russell King, All Rights Reserved.
+ *
+ * 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.
+ */
+#ifndef UCB1200_H
+#define UCB1200_H
+
+#ifdef CONFIG_ARCH_PXA
+
+/* ucb1400 aclink register mappings: */
+
+#define UCB_IO_DATA 0x5a
+#define UCB_IO_DIR 0x5c
+#define UCB_IE_RIS 0x5e
+#define UCB_IE_FAL 0x60
+#define UCB_IE_STATUS 0x62
+#define UCB_IE_CLEAR 0x62
+#define UCB_TS_CR 0x64
+#define UCB_ADC_CR 0x66
+#define UCB_ADC_DATA 0x68
+#define UCB_ID 0x7e /* 7c is mfr id, 7e part id (from aclink spec) */
+
+#define UCB_ADC_DAT(x) ((x) & 0x3ff)
+
+#else
+
+/* ucb1x00 SIB register mappings: */
+
+#define UCB_IO_DATA 0x00
+#define UCB_IO_DIR 0x01
+#define UCB_IE_RIS 0x02
+#define UCB_IE_FAL 0x03
+#define UCB_IE_STATUS 0x04
+#define UCB_IE_CLEAR 0x04
+#define UCB_TC_A 0x05
+#define UCB_TC_B 0x06
+#define UCB_AC_A 0x07
+#define UCB_AC_B 0x08
+#define UCB_TS_CR 0x09
+#define UCB_ADC_CR 0x0a
+#define UCB_ADC_DATA 0x0b
+#define UCB_ID 0x0c
+#define UCB_MODE 0x0d
+
+#define UCB_ADC_DAT(x) (((x) & 0x7fe0) >> 5)
+
+#endif
+
+
+#define UCB_IO_0 (1 << 0)
+#define UCB_IO_1 (1 << 1)
+#define UCB_IO_2 (1 << 2)
+#define UCB_IO_3 (1 << 3)
+#define UCB_IO_4 (1 << 4)
+#define UCB_IO_5 (1 << 5)
+#define UCB_IO_6 (1 << 6)
+#define UCB_IO_7 (1 << 7)
+#define UCB_IO_8 (1 << 8)
+#define UCB_IO_9 (1 << 9)
+
+#define UCB_IE_ADC (1 << 11)
+#define UCB_IE_TSPX (1 << 12)
+#define UCB_IE_TSMX (1 << 13)
+#define UCB_IE_TCLIP (1 << 14)
+#define UCB_IE_ACLIP (1 << 15)
+
+#define UCB_IRQ_TSPX 12
+
+#define UCB_TC_A_LOOP (1 << 7) /* UCB1200 */
+#define UCB_TC_A_AMPL (1 << 7) /* UCB1300 */
+
+#define UCB_TC_B_VOICE_ENA (1 << 3)
+#define UCB_TC_B_CLIP (1 << 4)
+#define UCB_TC_B_ATT (1 << 6)
+#define UCB_TC_B_SIDE_ENA (1 << 11)
+#define UCB_TC_B_MUTE (1 << 13)
+#define UCB_TC_B_IN_ENA (1 << 14)
+#define UCB_TC_B_OUT_ENA (1 << 15)
+
+#define UCB_AC_B_LOOP (1 << 8)
+#define UCB_AC_B_MUTE (1 << 13)
+#define UCB_AC_B_IN_ENA (1 << 14)
+#define UCB_AC_B_OUT_ENA (1 << 15)
+
+#define UCB_TS_CR_TSMX_POW (1 << 0)
+#define UCB_TS_CR_TSPX_POW (1 << 1)
+#define UCB_TS_CR_TSMY_POW (1 << 2)
+#define UCB_TS_CR_TSPY_POW (1 << 3)
+#define UCB_TS_CR_TSMX_GND (1 << 4)
+#define UCB_TS_CR_TSPX_GND (1 << 5)
+#define UCB_TS_CR_TSMY_GND (1 << 6)
+#define UCB_TS_CR_TSPY_GND (1 << 7)
+#define UCB_TS_CR_MODE_INT (0 << 8)
+#define UCB_TS_CR_MODE_PRES (1 << 8)
+#define UCB_TS_CR_MODE_POS (2 << 8)
+#define UCB_TS_CR_BIAS_ENA (1 << 11)
+#define UCB_TS_CR_TSPX_LOW (1 << 12)
+#define UCB_TS_CR_TSMX_LOW (1 << 13)
+
+#define UCB_ADC_SYNC_ENA (1 << 0)
+#define UCB_ADC_VREFBYP_CON (1 << 1)
+#define UCB_ADC_INP_TSPX (0 << 2)
+#define UCB_ADC_INP_TSMX (1 << 2)
+#define UCB_ADC_INP_TSPY (2 << 2)
+#define UCB_ADC_INP_TSMY (3 << 2)
+#define UCB_ADC_INP_AD0 (4 << 2)
+#define UCB_ADC_INP_AD1 (5 << 2)
+#define UCB_ADC_INP_AD2 (6 << 2)
+#define UCB_ADC_INP_AD3 (7 << 2)
+#define UCB_ADC_EXT_REF (1 << 5)
+#define UCB_ADC_START (1 << 7)
+#define UCB_ADC_ENA (1 << 15)
+
+#define UCB_ADC_DAT_VAL (1 << 15)
+
+#define UCB_ID_1200 0x1004
+#define UCB_ID_1300 0x1005
+#define UCB_ID_1400 0x4304
+#define UCB_ID_1400_BUGGY 0x4303 /* fake ID */
+
+#define UCB_MODE_DYN_VFLAG_ENA (1 << 12)
+#define UCB_MODE_AUD_OFF_CAN (1 << 13)
+
+#include "mcp.h"
+
+struct ucb1x00_irq {
+ void *devid;
+ void (*fn)(int, void *);
+};
+
+extern struct class ucb1x00_class;
+
+struct ucb1x00 {
+ struct mcp *mcp; /* this needs to be first */
+ spinlock_t lock;
+ unsigned int irq;
+ struct semaphore adc_sem;
+ spinlock_t io_lock;
+ wait_queue_head_t irq_wait;
+ struct completion complete;
+ struct task_struct *irq_task;
+ u16 id;
+ u16 io_dir;
+ u16 io_out;
+ u16 adc_cr;
+ u16 irq_fal_enbl;
+ u16 irq_ris_enbl;
+ struct ucb1x00_irq irq_handler[16];
+ struct class_device cdev;
+ void *audio_data;
+ void *telecom_data;
+ void *ts_data;
+};
+
+#define classdev_to_ucb1x00(cd) container_of(cd, struct ucb1x00, cdev)
+
+int ucb1x00_register_interface(struct class_interface *intf);
+void ucb1x00_unregister_interface(struct class_interface *intf);
+
+/**
+ * ucb1x00_clkrate - return the UCB1x00 SIB clock rate
+ * @ucb: UCB1x00 structure describing chip
+ *
+ * Return the SIB clock rate in Hz.
+ */
+static inline unsigned int ucb1x00_clkrate(struct ucb1x00 *ucb)
+{
+ return mcp_get_sclk_rate(ucb->mcp);
+}
+
+/**
+ * ucb1x00_enable - enable the UCB1x00 SIB clock
+ * @ucb: UCB1x00 structure describing chip
+ *
+ * Enable the SIB clock. This can be called multiple times.
+ */
+static inline void ucb1x00_enable(struct ucb1x00 *ucb)
+{
+ mcp_enable(ucb->mcp);
+}
+
+/**
+ * ucb1x00_disable - disable the UCB1x00 SIB clock
+ * @ucb: UCB1x00 structure describing chip
+ *
+ * Disable the SIB clock. The SIB clock will only be disabled
+ * when the number of ucb1x00_enable calls match the number of
+ * ucb1x00_disable calls.
+ */
+static inline void ucb1x00_disable(struct ucb1x00 *ucb)
+{
+ mcp_disable(ucb->mcp);
+}
+
+/**
+ * ucb1x00_reg_write - write a UCB1x00 register
+ * @ucb: UCB1x00 structure describing chip
+ * @reg: UCB1x00 4-bit register index to write
+ * @val: UCB1x00 16-bit value to write
+ *
+ * Write the UCB1x00 register @reg with value @val. The SIB
+ * clock must be running for this function to return.
+ */
+static inline void ucb1x00_reg_write(struct ucb1x00 *ucb, unsigned int reg, unsigned int val)
+{
+ mcp_reg_write(ucb->mcp, reg, val);
+}
+
+/**
+ * ucb1x00_reg_read - read a UCB1x00 register
+ * @ucb: UCB1x00 structure describing chip
+ * @reg: UCB1x00 4-bit register index to write
+ *
+ * Read the UCB1x00 register @reg and return its value. The SIB
+ * clock must be running for this function to return.
+ */
+static inline unsigned int ucb1x00_reg_read(struct ucb1x00 *ucb, unsigned int reg)
+{
+ return mcp_reg_read(ucb->mcp, reg);
+}
+/**
+ * ucb1x00_set_audio_divisor -
+ * @ucb: UCB1x00 structure describing chip
+ * @div: SIB clock divisor
+ */
+static inline void ucb1x00_set_audio_divisor(struct ucb1x00 *ucb, unsigned int div)
+{
+ mcp_set_audio_divisor(ucb->mcp, div);
+}
+
+/**
+ * ucb1x00_set_telecom_divisor -
+ * @ucb: UCB1x00 structure describing chip
+ * @div: SIB clock divisor
+ */
+static inline void ucb1x00_set_telecom_divisor(struct ucb1x00 *ucb, unsigned int div)
+{
+ mcp_set_telecom_divisor(ucb->mcp, div);
+}
+
+#define ucb1x00_get() NULL
+
+void ucb1x00_io_set_dir(struct ucb1x00 *ucb, unsigned int, unsigned int);
+void ucb1x00_io_write(struct ucb1x00 *ucb, unsigned int, unsigned int);
+unsigned int ucb1x00_io_read(struct ucb1x00 *ucb);
+
+#define UCB_NOSYNC (0)
+#define UCB_SYNC (1)
+
+unsigned int ucb1x00_adc_read(struct ucb1x00 *ucb, int adc_channel, int sync);
+void ucb1x00_adc_enable(struct ucb1x00 *ucb);
+void ucb1x00_adc_disable(struct ucb1x00 *ucb);
+
+/*
+ * Which edges of the IRQ do you want to control today?
+ */
+#define UCB_RISING (1 << 0)
+#define UCB_FALLING (1 << 1)
+
+int ucb1x00_hook_irq(struct ucb1x00 *ucb, unsigned int idx, void (*fn)(int, void *), void *devid);
+void ucb1x00_enable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
+void ucb1x00_disable_irq(struct ucb1x00 *ucb, unsigned int idx, int edges);
+int ucb1x00_free_irq(struct ucb1x00 *ucb, unsigned int idx, void *devid);
+
+#endif
--
teflon -- maybe it is a trademark, but it should not be.
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