1 files changed, 0 insertions, 551 deletions

diff --git a/ANDROID_3.4.5/drivers/mfd/ezx-pcap.c b/ANDROID_3.4.5/drivers/mfd/ezx-pcap.c
deleted file mode 100644
index 43a76c41..00000000
--- a/ANDROID_3.4.5/drivers/mfd/ezx-pcap.c
+++ /dev/null
@@ -1,551 +0,0 @@
-/*
- * Driver for Motorola PCAP2 as present in EZX phones
- *
- * Copyright (C) 2006 Harald Welte <laforge@openezx.org>
- * Copyright (C) 2009 Daniel Ribeiro <drwyrm@gmail.com>
- *
- * 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.
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mfd/ezx-pcap.h>
-#include <linux/spi/spi.h>
-#include <linux/gpio.h>
-#include <linux/slab.h>
-
-#define PCAP_ADC_MAXQ		8
-struct pcap_adc_request {
-	u8 bank;
-	u8 ch[2];
-	u32 flags;
-	void (*callback)(void *, u16[]);
-	void *data;
-};
-
-struct pcap_adc_sync_request {
-	u16 res[2];
-	struct completion completion;
-};
-
-struct pcap_chip {
-	struct spi_device *spi;
-
-	/* IO */
-	u32 buf;
-	struct mutex io_mutex;
-
-	/* IRQ */
-	unsigned int irq_base;
-	u32 msr;
-	struct work_struct isr_work;
-	struct work_struct msr_work;
-	struct workqueue_struct *workqueue;
-
-	/* ADC */
-	struct pcap_adc_request *adc_queue[PCAP_ADC_MAXQ];
-	u8 adc_head;
-	u8 adc_tail;
-	struct mutex adc_mutex;
-};
-
-/* IO */
-static int ezx_pcap_putget(struct pcap_chip *pcap, u32 *data)
-{
-	struct spi_transfer t;
-	struct spi_message m;
-	int status;
-
-	memset(&t, 0, sizeof t);
-	spi_message_init(&m);
-	t.len = sizeof(u32);
-	spi_message_add_tail(&t, &m);
-
-	pcap->buf = *data;
-	t.tx_buf = (u8 *) &pcap->buf;
-	t.rx_buf = (u8 *) &pcap->buf;
-	status = spi_sync(pcap->spi, &m);
-
-	if (status == 0)
-		*data = pcap->buf;
-
-	return status;
-}
-
-int ezx_pcap_write(struct pcap_chip *pcap, u8 reg_num, u32 value)
-{
-	int ret;
-
-	mutex_lock(&pcap->io_mutex);
-	value &= PCAP_REGISTER_VALUE_MASK;
-	value |= PCAP_REGISTER_WRITE_OP_BIT
-		| (reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
-	ret = ezx_pcap_putget(pcap, &value);
-	mutex_unlock(&pcap->io_mutex);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ezx_pcap_write);
-
-int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value)
-{
-	int ret;
-
-	mutex_lock(&pcap->io_mutex);
-	*value = PCAP_REGISTER_READ_OP_BIT
-		| (reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
-
-	ret = ezx_pcap_putget(pcap, value);
-	mutex_unlock(&pcap->io_mutex);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ezx_pcap_read);
-
-int ezx_pcap_set_bits(struct pcap_chip *pcap, u8 reg_num, u32 mask, u32 val)
-{
-	int ret;
-	u32 tmp = PCAP_REGISTER_READ_OP_BIT |
-		(reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
-
-	mutex_lock(&pcap->io_mutex);
-	ret = ezx_pcap_putget(pcap, &tmp);
-	if (ret)
-		goto out_unlock;
-
-	tmp &= (PCAP_REGISTER_VALUE_MASK & ~mask);
-	tmp |= (val & mask) | PCAP_REGISTER_WRITE_OP_BIT |
-		(reg_num << PCAP_REGISTER_ADDRESS_SHIFT);
-
-	ret = ezx_pcap_putget(pcap, &tmp);
-out_unlock:
-	mutex_unlock(&pcap->io_mutex);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(ezx_pcap_set_bits);
-
-/* IRQ */
-int irq_to_pcap(struct pcap_chip *pcap, int irq)
-{
-	return irq - pcap->irq_base;
-}
-EXPORT_SYMBOL_GPL(irq_to_pcap);
-
-int pcap_to_irq(struct pcap_chip *pcap, int irq)
-{
-	return pcap->irq_base + irq;
-}
-EXPORT_SYMBOL_GPL(pcap_to_irq);
-
-static void pcap_mask_irq(struct irq_data *d)
-{
-	struct pcap_chip *pcap = irq_data_get_irq_chip_data(d);
-
-	pcap->msr |= 1 << irq_to_pcap(pcap, d->irq);
-	queue_work(pcap->workqueue, &pcap->msr_work);
-}
-
-static void pcap_unmask_irq(struct irq_data *d)
-{
-	struct pcap_chip *pcap = irq_data_get_irq_chip_data(d);
-
-	pcap->msr &= ~(1 << irq_to_pcap(pcap, d->irq));
-	queue_work(pcap->workqueue, &pcap->msr_work);
-}
-
-static struct irq_chip pcap_irq_chip = {
-	.name		= "pcap",
-	.irq_disable	= pcap_mask_irq,
-	.irq_mask	= pcap_mask_irq,
-	.irq_unmask	= pcap_unmask_irq,
-};
-
-static void pcap_msr_work(struct work_struct *work)
-{
-	struct pcap_chip *pcap = container_of(work, struct pcap_chip, msr_work);
-
-	ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
-}
-
-static void pcap_isr_work(struct work_struct *work)
-{
-	struct pcap_chip *pcap = container_of(work, struct pcap_chip, isr_work);
-	struct pcap_platform_data *pdata = pcap->spi->dev.platform_data;
-	u32 msr, isr, int_sel, service;
-	int irq;
-
-	do {
-		ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);
-		ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);
-
-		/* We can't service/ack irqs that are assigned to port 2 */
-		if (!(pdata->config & PCAP_SECOND_PORT)) {
-			ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);
-			isr &= ~int_sel;
-		}
-
-		ezx_pcap_write(pcap, PCAP_REG_MSR, isr | msr);
-		ezx_pcap_write(pcap, PCAP_REG_ISR, isr);
-
-		local_irq_disable();
-		service = isr & ~msr;
-		for (irq = pcap->irq_base; service; service >>= 1, irq++) {
-			if (service & 1)
-				generic_handle_irq(irq);
-		}
-		local_irq_enable();
-		ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
-	} while (gpio_get_value(irq_to_gpio(pcap->spi->irq)));
-}
-
-static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
-{
-	struct pcap_chip *pcap = irq_get_handler_data(irq);
-
-	desc->irq_data.chip->irq_ack(&desc->irq_data);
-	queue_work(pcap->workqueue, &pcap->isr_work);
-	return;
-}
-
-/* ADC */
-void pcap_set_ts_bits(struct pcap_chip *pcap, u32 bits)
-{
-	u32 tmp;
-
-	mutex_lock(&pcap->adc_mutex);
-	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
-	tmp &= ~(PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
-	tmp |= bits & (PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
-	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
-	mutex_unlock(&pcap->adc_mutex);
-}
-EXPORT_SYMBOL_GPL(pcap_set_ts_bits);
-
-static void pcap_disable_adc(struct pcap_chip *pcap)
-{
-	u32 tmp;
-
-	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
-	tmp &= ~(PCAP_ADC_ADEN|PCAP_ADC_BATT_I_ADC|PCAP_ADC_BATT_I_POLARITY);
-	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
-}
-
-static void pcap_adc_trigger(struct pcap_chip *pcap)
-{
-	u32 tmp;
-	u8 head;
-
-	mutex_lock(&pcap->adc_mutex);
-	head = pcap->adc_head;
-	if (!pcap->adc_queue[head]) {
-		/* queue is empty, save power */
-		pcap_disable_adc(pcap);
-		mutex_unlock(&pcap->adc_mutex);
-		return;
-	}
-	/* start conversion on requested bank, save TS_M bits */
-	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
-	tmp &= (PCAP_ADC_TS_M_MASK | PCAP_ADC_TS_REF_LOWPWR);
-	tmp |= pcap->adc_queue[head]->flags | PCAP_ADC_ADEN;
-
-	if (pcap->adc_queue[head]->bank == PCAP_ADC_BANK_1)
-		tmp |= PCAP_ADC_AD_SEL1;
-
-	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
-	mutex_unlock(&pcap->adc_mutex);
-	ezx_pcap_write(pcap, PCAP_REG_ADR, PCAP_ADR_ASC);
-}
-
-static irqreturn_t pcap_adc_irq(int irq, void *_pcap)
-{
-	struct pcap_chip *pcap = _pcap;
-	struct pcap_adc_request *req;
-	u16 res[2];
-	u32 tmp;
-
-	mutex_lock(&pcap->adc_mutex);
-	req = pcap->adc_queue[pcap->adc_head];
-
-	if (WARN(!req, "adc irq without pending request\n")) {
-		mutex_unlock(&pcap->adc_mutex);
-		return IRQ_HANDLED;
-	}
-
-	/* read requested channels results */
-	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);
-	tmp &= ~(PCAP_ADC_ADA1_MASK | PCAP_ADC_ADA2_MASK);
-	tmp |= (req->ch[0] << PCAP_ADC_ADA1_SHIFT);
-	tmp |= (req->ch[1] << PCAP_ADC_ADA2_SHIFT);
-	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);
-	ezx_pcap_read(pcap, PCAP_REG_ADR, &tmp);
-	res[0] = (tmp & PCAP_ADR_ADD1_MASK) >> PCAP_ADR_ADD1_SHIFT;
-	res[1] = (tmp & PCAP_ADR_ADD2_MASK) >> PCAP_ADR_ADD2_SHIFT;
-
-	pcap->adc_queue[pcap->adc_head] = NULL;
-	pcap->adc_head = (pcap->adc_head + 1) & (PCAP_ADC_MAXQ - 1);
-	mutex_unlock(&pcap->adc_mutex);
-
-	/* pass the results and release memory */
-	req->callback(req->data, res);
-	kfree(req);
-
-	/* trigger next conversion (if any) on queue */
-	pcap_adc_trigger(pcap);
-
-	return IRQ_HANDLED;
-}
-
-int pcap_adc_async(struct pcap_chip *pcap, u8 bank, u32 flags, u8 ch[],
-						void *callback, void *data)
-{
-	struct pcap_adc_request *req;
-
-	/* This will be freed after we have a result */
-	req = kmalloc(sizeof(struct pcap_adc_request), GFP_KERNEL);
-	if (!req)
-		return -ENOMEM;
-
-	req->bank = bank;
-	req->flags = flags;
-	req->ch[0] = ch[0];
-	req->ch[1] = ch[1];
-	req->callback = callback;
-	req->data = data;
-
-	mutex_lock(&pcap->adc_mutex);
-	if (pcap->adc_queue[pcap->adc_tail]) {
-		mutex_unlock(&pcap->adc_mutex);
-		kfree(req);
-		return -EBUSY;
-	}
-	pcap->adc_queue[pcap->adc_tail] = req;
-	pcap->adc_tail = (pcap->adc_tail + 1) & (PCAP_ADC_MAXQ - 1);
-	mutex_unlock(&pcap->adc_mutex);
-
-	/* start conversion */
-	pcap_adc_trigger(pcap);
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(pcap_adc_async);
-
-static void pcap_adc_sync_cb(void *param, u16 res[])
-{
-	struct pcap_adc_sync_request *req = param;
-
-	req->res[0] = res[0];
-	req->res[1] = res[1];
-	complete(&req->completion);
-}
-
-int pcap_adc_sync(struct pcap_chip *pcap, u8 bank, u32 flags, u8 ch[],
-								u16 res[])
-{
-	struct pcap_adc_sync_request sync_data;
-	int ret;
-
-	init_completion(&sync_data.completion);
-	ret = pcap_adc_async(pcap, bank, flags, ch, pcap_adc_sync_cb,
-								&sync_data);
-	if (ret)
-		return ret;
-	wait_for_completion(&sync_data.completion);
-	res[0] = sync_data.res[0];
-	res[1] = sync_data.res[1];
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(pcap_adc_sync);
-
-/* subdevs */
-static int pcap_remove_subdev(struct device *dev, void *unused)
-{
-	platform_device_unregister(to_platform_device(dev));
-	return 0;
-}
-
-static int __devinit pcap_add_subdev(struct pcap_chip *pcap,
-						struct pcap_subdev *subdev)
-{
-	struct platform_device *pdev;
-	int ret;
-
-	pdev = platform_device_alloc(subdev->name, subdev->id);
-	if (!pdev)
-		return -ENOMEM;
-
-	pdev->dev.parent = &pcap->spi->dev;
-	pdev->dev.platform_data = subdev->platform_data;
-
-	ret = platform_device_add(pdev);
-	if (ret)
-		platform_device_put(pdev);
-
-	return ret;
-}
-
-static int __devexit ezx_pcap_remove(struct spi_device *spi)
-{
-	struct pcap_chip *pcap = dev_get_drvdata(&spi->dev);
-	struct pcap_platform_data *pdata = spi->dev.platform_data;
-	int i, adc_irq;
-
-	/* remove all registered subdevs */
-	device_for_each_child(&spi->dev, NULL, pcap_remove_subdev);
-
-	/* cleanup ADC */
-	adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ?
-				PCAP_IRQ_ADCDONE2 : PCAP_IRQ_ADCDONE);
-	free_irq(adc_irq, pcap);
-	mutex_lock(&pcap->adc_mutex);
-	for (i = 0; i < PCAP_ADC_MAXQ; i++)
-		kfree(pcap->adc_queue[i]);
-	mutex_unlock(&pcap->adc_mutex);
-
-	/* cleanup irqchip */
-	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)
-		irq_set_chip_and_handler(i, NULL, NULL);
-
-	destroy_workqueue(pcap->workqueue);
-
-	kfree(pcap);
-
-	return 0;
-}
-
-static int __devinit ezx_pcap_probe(struct spi_device *spi)
-{
-	struct pcap_platform_data *pdata = spi->dev.platform_data;
-	struct pcap_chip *pcap;
-	int i, adc_irq;
-	int ret = -ENODEV;
-
-	/* platform data is required */
-	if (!pdata)
-		goto ret;
-
-	pcap = kzalloc(sizeof(*pcap), GFP_KERNEL);
-	if (!pcap) {
-		ret = -ENOMEM;
-		goto ret;
-	}
-
-	mutex_init(&pcap->io_mutex);
-	mutex_init(&pcap->adc_mutex);
-	INIT_WORK(&pcap->isr_work, pcap_isr_work);
-	INIT_WORK(&pcap->msr_work, pcap_msr_work);
-	dev_set_drvdata(&spi->dev, pcap);
-
-	/* setup spi */
-	spi->bits_per_word = 32;
-	spi->mode = SPI_MODE_0 | (pdata->config & PCAP_CS_AH ? SPI_CS_HIGH : 0);
-	ret = spi_setup(spi);
-	if (ret)
-		goto free_pcap;
-
-	pcap->spi = spi;
-
-	/* setup irq */
-	pcap->irq_base = pdata->irq_base;
-	pcap->workqueue = create_singlethread_workqueue("pcapd");
-	if (!pcap->workqueue) {
-		ret = -ENOMEM;
-		dev_err(&spi->dev, "can't create pcap thread\n");
-		goto free_pcap;
-	}
-
-	/* redirect interrupts to AP, except adcdone2 */
-	if (!(pdata->config & PCAP_SECOND_PORT))
-		ezx_pcap_write(pcap, PCAP_REG_INT_SEL,
-					(1 << PCAP_IRQ_ADCDONE2));
-
-	/* setup irq chip */
-	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) {
-		irq_set_chip_and_handler(i, &pcap_irq_chip, handle_simple_irq);
-		irq_set_chip_data(i, pcap);
-#ifdef CONFIG_ARM
-		set_irq_flags(i, IRQF_VALID);
-#else
-		irq_set_noprobe(i);
-#endif
-	}
-
-	/* mask/ack all PCAP interrupts */
-	ezx_pcap_write(pcap, PCAP_REG_MSR, PCAP_MASK_ALL_INTERRUPT);
-	ezx_pcap_write(pcap, PCAP_REG_ISR, PCAP_CLEAR_INTERRUPT_REGISTER);
-	pcap->msr = PCAP_MASK_ALL_INTERRUPT;
-
-	irq_set_irq_type(spi->irq, IRQ_TYPE_EDGE_RISING);
-	irq_set_handler_data(spi->irq, pcap);
-	irq_set_chained_handler(spi->irq, pcap_irq_handler);
-	irq_set_irq_wake(spi->irq, 1);
-
-	/* ADC */
-	adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ?
-					PCAP_IRQ_ADCDONE2 : PCAP_IRQ_ADCDONE);
-
-	ret = request_irq(adc_irq, pcap_adc_irq, 0, "ADC", pcap);
-	if (ret)
-		goto free_irqchip;
-
-	/* setup subdevs */
-	for (i = 0; i < pdata->num_subdevs; i++) {
-		ret = pcap_add_subdev(pcap, &pdata->subdevs[i]);
-		if (ret)
-			goto remove_subdevs;
-	}
-
-	/* board specific quirks */
-	if (pdata->init)
-		pdata->init(pcap);
-
-	return 0;
-
-remove_subdevs:
-	device_for_each_child(&spi->dev, NULL, pcap_remove_subdev);
-/* free_adc: */
-	free_irq(adc_irq, pcap);
-free_irqchip:
-	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)
-		irq_set_chip_and_handler(i, NULL, NULL);
-/* destroy_workqueue: */
-	destroy_workqueue(pcap->workqueue);
-free_pcap:
-	kfree(pcap);
-ret:
-	return ret;
-}
-
-static struct spi_driver ezxpcap_driver = {
-	.probe	= ezx_pcap_probe,
-	.remove = __devexit_p(ezx_pcap_remove),
-	.driver = {
-		.name	= "ezx-pcap",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init ezx_pcap_init(void)
-{
-	return spi_register_driver(&ezxpcap_driver);
-}
-
-static void __exit ezx_pcap_exit(void)
-{
-	spi_unregister_driver(&ezxpcap_driver);
-}
-
-subsys_initcall(ezx_pcap_init);
-module_exit(ezx_pcap_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Daniel Ribeiro / Harald Welte");
-MODULE_DESCRIPTION("Motorola PCAP2 ASIC Driver");
-MODULE_ALIAS("spi:ezx-pcap");