Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 0 insertions, 446 deletions

diff --git a/ANDROID_3.4.5/drivers/mfd/twl6030-irq.c b/ANDROID_3.4.5/drivers/mfd/twl6030-irq.c
deleted file mode 100644
index b76902f1..00000000
--- a/ANDROID_3.4.5/drivers/mfd/twl6030-irq.c
+++ /dev/null
@@ -1,446 +0,0 @@
-/*
- * twl6030-irq.c - TWL6030 irq support
- *
- * Copyright (C) 2005-2009 Texas Instruments, Inc.
- *
- * Modifications to defer interrupt handling to a kernel thread:
- * Copyright (C) 2006 MontaVista Software, Inc.
- *
- * Based on tlv320aic23.c:
- * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
- *
- * Code cleanup and modifications to IRQ handler.
- * by syed khasim <x0khasim@ti.com>
- *
- * TWL6030 specific code and IRQ handling changes by
- * Jagadeesh Bhaskar Pakaravoor <j-pakaravoor@ti.com>
- * Balaji T K <balajitk@ti.com>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
- */
-
-#include <linux/init.h>
-#include <linux/export.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/kthread.h>
-#include <linux/i2c/twl.h>
-#include <linux/platform_device.h>
-#include <linux/suspend.h>
-#include <linux/of.h>
-#include <linux/irqdomain.h>
-
-#include "twl-core.h"
-
-/*
- * TWL6030 (unlike its predecessors, which had two level interrupt handling)
- * three interrupt registers INT_STS_A, INT_STS_B and INT_STS_C.
- * It exposes status bits saying who has raised an interrupt. There are
- * three mask registers that corresponds to these status registers, that
- * enables/disables these interrupts.
- *
- * We set up IRQs starting at a platform-specified base. An interrupt map table,
- * specifies mapping between interrupt number and the associated module.
- */
-#define TWL6030_NR_IRQS    20
-
-static int twl6030_interrupt_mapping[24] = {
-	PWR_INTR_OFFSET,	/* Bit 0	PWRON			*/
-	PWR_INTR_OFFSET,	/* Bit 1	RPWRON			*/
-	PWR_INTR_OFFSET,	/* Bit 2	BAT_VLOW		*/
-	RTC_INTR_OFFSET,	/* Bit 3	RTC_ALARM		*/
-	RTC_INTR_OFFSET,	/* Bit 4	RTC_PERIOD		*/
-	HOTDIE_INTR_OFFSET,	/* Bit 5	HOT_DIE			*/
-	SMPSLDO_INTR_OFFSET,	/* Bit 6	VXXX_SHORT		*/
-	SMPSLDO_INTR_OFFSET,	/* Bit 7	VMMC_SHORT		*/
-
-	SMPSLDO_INTR_OFFSET,	/* Bit 8	VUSIM_SHORT		*/
-	BATDETECT_INTR_OFFSET,	/* Bit 9	BAT			*/
-	SIMDETECT_INTR_OFFSET,	/* Bit 10	SIM			*/
-	MMCDETECT_INTR_OFFSET,	/* Bit 11	MMC			*/
-	RSV_INTR_OFFSET,  	/* Bit 12	Reserved		*/
-	MADC_INTR_OFFSET,	/* Bit 13	GPADC_RT_EOC		*/
-	MADC_INTR_OFFSET,	/* Bit 14	GPADC_SW_EOC		*/
-	GASGAUGE_INTR_OFFSET,	/* Bit 15	CC_AUTOCAL		*/
-
-	USBOTG_INTR_OFFSET,	/* Bit 16	ID_WKUP			*/
-	USBOTG_INTR_OFFSET,	/* Bit 17	VBUS_WKUP		*/
-	USBOTG_INTR_OFFSET,	/* Bit 18	ID			*/
-	USB_PRES_INTR_OFFSET,	/* Bit 19	VBUS			*/
-	CHARGER_INTR_OFFSET,	/* Bit 20	CHRG_CTRL		*/
-	CHARGERFAULT_INTR_OFFSET,	/* Bit 21	EXT_CHRG	*/
-	CHARGERFAULT_INTR_OFFSET,	/* Bit 22	INT_CHRG	*/
-	RSV_INTR_OFFSET,	/* Bit 23	Reserved		*/
-};
-/*----------------------------------------------------------------------*/
-
-static unsigned twl6030_irq_base;
-static int twl_irq;
-static bool twl_irq_wake_enabled;
-
-static struct completion irq_event;
-static atomic_t twl6030_wakeirqs = ATOMIC_INIT(0);
-
-static int twl6030_irq_pm_notifier(struct notifier_block *notifier,
-				   unsigned long pm_event, void *unused)
-{
-	int chained_wakeups;
-
-	switch (pm_event) {
-	case PM_SUSPEND_PREPARE:
-		chained_wakeups = atomic_read(&twl6030_wakeirqs);
-
-		if (chained_wakeups && !twl_irq_wake_enabled) {
-			if (enable_irq_wake(twl_irq))
-				pr_err("twl6030 IRQ wake enable failed\n");
-			else
-				twl_irq_wake_enabled = true;
-		} else if (!chained_wakeups && twl_irq_wake_enabled) {
-			disable_irq_wake(twl_irq);
-			twl_irq_wake_enabled = false;
-		}
-
-		disable_irq(twl_irq);
-		break;
-
-	case PM_POST_SUSPEND:
-		enable_irq(twl_irq);
-		break;
-
-	default:
-		break;
-	}
-
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block twl6030_irq_pm_notifier_block = {
-	.notifier_call = twl6030_irq_pm_notifier,
-};
-
-/*
- * This thread processes interrupts reported by the Primary Interrupt Handler.
- */
-static int twl6030_irq_thread(void *data)
-{
-	long irq = (long)data;
-	static unsigned i2c_errors;
-	static const unsigned max_i2c_errors = 100;
-	int ret;
-
-	while (!kthread_should_stop()) {
-		int i;
-		union {
-		u8 bytes[4];
-		u32 int_sts;
-		} sts;
-
-		/* Wait for IRQ, then read PIH irq status (also blocking) */
-		wait_for_completion_interruptible(&irq_event);
-
-		/* read INT_STS_A, B and C in one shot using a burst read */
-		ret = twl_i2c_read(TWL_MODULE_PIH, sts.bytes,
-				REG_INT_STS_A, 3);
-		if (ret) {
-			pr_warning("twl6030: I2C error %d reading PIH ISR\n",
-					ret);
-			if (++i2c_errors >= max_i2c_errors) {
-				printk(KERN_ERR "Maximum I2C error count"
-						" exceeded.  Terminating %s.\n",
-						__func__);
-				break;
-			}
-			complete(&irq_event);
-			continue;
-		}
-
-
-
-		sts.bytes[3] = 0; /* Only 24 bits are valid*/
-
-		/*
-		 * Since VBUS status bit is not reliable for VBUS disconnect
-		 * use CHARGER VBUS detection status bit instead.
-		 */
-		if (sts.bytes[2] & 0x10)
-			sts.bytes[2] |= 0x08;
-
-		for (i = 0; sts.int_sts; sts.int_sts >>= 1, i++) {
-			local_irq_disable();
-			if (sts.int_sts & 0x1) {
-				int module_irq = twl6030_irq_base +
-					twl6030_interrupt_mapping[i];
-				generic_handle_irq(module_irq);
-
-			}
-		local_irq_enable();
-		}
-
-		/*
-		 * NOTE:
-		 * Simulation confirms that documentation is wrong w.r.t the
-		 * interrupt status clear operation. A single *byte* write to
-		 * any one of STS_A to STS_C register results in all three
-		 * STS registers being reset. Since it does not matter which
-		 * value is written, all three registers are cleared on a
-		 * single byte write, so we just use 0x0 to clear.
-		 */
-		ret = twl_i2c_write_u8(TWL_MODULE_PIH, 0x00, REG_INT_STS_A);
-		if (ret)
-			pr_warning("twl6030: I2C error in clearing PIH ISR\n");
-
-		enable_irq(irq);
-	}
-
-	return 0;
-}
-
-/*
- * handle_twl6030_int() is the desc->handle method for the twl6030 interrupt.
- * This is a chained interrupt, so there is no desc->action method for it.
- * Now we need to query the interrupt controller in the twl6030 to determine
- * which module is generating the interrupt request.  However, we can't do i2c
- * transactions in interrupt context, so we must defer that work to a kernel
- * thread.  All we do here is acknowledge and mask the interrupt and wakeup
- * the kernel thread.
- */
-static irqreturn_t handle_twl6030_pih(int irq, void *devid)
-{
-	disable_irq_nosync(irq);
-	complete(devid);
-	return IRQ_HANDLED;
-}
-
-/*----------------------------------------------------------------------*/
-
-static inline void activate_irq(int irq)
-{
-#ifdef CONFIG_ARM
-	/* ARM requires an extra step to clear IRQ_NOREQUEST, which it
-	 * sets on behalf of every irq_chip.  Also sets IRQ_NOPROBE.
-	 */
-	set_irq_flags(irq, IRQF_VALID);
-#else
-	/* same effect on other architectures */
-	irq_set_noprobe(irq);
-#endif
-}
-
-static int twl6030_irq_set_wake(struct irq_data *d, unsigned int on)
-{
-	if (on)
-		atomic_inc(&twl6030_wakeirqs);
-	else
-		atomic_dec(&twl6030_wakeirqs);
-
-	return 0;
-}
-
-int twl6030_interrupt_unmask(u8 bit_mask, u8 offset)
-{
-	int ret;
-	u8 unmask_value;
-	ret = twl_i2c_read_u8(TWL_MODULE_PIH, &unmask_value,
-			REG_INT_STS_A + offset);
-	unmask_value &= (~(bit_mask));
-	ret |= twl_i2c_write_u8(TWL_MODULE_PIH, unmask_value,
-			REG_INT_STS_A + offset); /* unmask INT_MSK_A/B/C */
-	return ret;
-}
-EXPORT_SYMBOL(twl6030_interrupt_unmask);
-
-int twl6030_interrupt_mask(u8 bit_mask, u8 offset)
-{
-	int ret;
-	u8 mask_value;
-	ret = twl_i2c_read_u8(TWL_MODULE_PIH, &mask_value,
-			REG_INT_STS_A + offset);
-	mask_value |= (bit_mask);
-	ret |= twl_i2c_write_u8(TWL_MODULE_PIH, mask_value,
-			REG_INT_STS_A + offset); /* mask INT_MSK_A/B/C */
-	return ret;
-}
-EXPORT_SYMBOL(twl6030_interrupt_mask);
-
-int twl6030_mmc_card_detect_config(void)
-{
-	int ret;
-	u8 reg_val = 0;
-
-	/* Unmasking the Card detect Interrupt line for MMC1 from Phoenix */
-	twl6030_interrupt_unmask(TWL6030_MMCDETECT_INT_MASK,
-						REG_INT_MSK_LINE_B);
-	twl6030_interrupt_unmask(TWL6030_MMCDETECT_INT_MASK,
-						REG_INT_MSK_STS_B);
-	/*
-	 * Initially Configuring MMC_CTRL for receiving interrupts &
-	 * Card status on TWL6030 for MMC1
-	 */
-	ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &reg_val, TWL6030_MMCCTRL);
-	if (ret < 0) {
-		pr_err("twl6030: Failed to read MMCCTRL, error %d\n", ret);
-		return ret;
-	}
-	reg_val &= ~VMMC_AUTO_OFF;
-	reg_val |= SW_FC;
-	ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, reg_val, TWL6030_MMCCTRL);
-	if (ret < 0) {
-		pr_err("twl6030: Failed to write MMCCTRL, error %d\n", ret);
-		return ret;
-	}
-
-	/* Configuring PullUp-PullDown register */
-	ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &reg_val,
-						TWL6030_CFG_INPUT_PUPD3);
-	if (ret < 0) {
-		pr_err("twl6030: Failed to read CFG_INPUT_PUPD3, error %d\n",
-									ret);
-		return ret;
-	}
-	reg_val &= ~(MMC_PU | MMC_PD);
-	ret = twl_i2c_write_u8(TWL6030_MODULE_ID0, reg_val,
-						TWL6030_CFG_INPUT_PUPD3);
-	if (ret < 0) {
-		pr_err("twl6030: Failed to write CFG_INPUT_PUPD3, error %d\n",
-									ret);
-		return ret;
-	}
-
-	return twl6030_irq_base + MMCDETECT_INTR_OFFSET;
-}
-EXPORT_SYMBOL(twl6030_mmc_card_detect_config);
-
-int twl6030_mmc_card_detect(struct device *dev, int slot)
-{
-	int ret = -EIO;
-	u8 read_reg = 0;
-	struct platform_device *pdev = to_platform_device(dev);
-
-	if (pdev->id) {
-		/* TWL6030 provide's Card detect support for
-		 * only MMC1 controller.
-		 */
-		pr_err("Unknown MMC controller %d in %s\n", pdev->id, __func__);
-		return ret;
-	}
-	/*
-	 * BIT0 of MMC_CTRL on TWL6030 provides card status for MMC1
-	 * 0 - Card not present ,1 - Card present
-	 */
-	ret = twl_i2c_read_u8(TWL6030_MODULE_ID0, &read_reg,
-						TWL6030_MMCCTRL);
-	if (ret >= 0)
-		ret = read_reg & STS_MMC;
-	return ret;
-}
-EXPORT_SYMBOL(twl6030_mmc_card_detect);
-
-int twl6030_init_irq(struct device *dev, int irq_num)
-{
-	struct			device_node *node = dev->of_node;
-	int			nr_irqs, irq_base, irq_end;
-	struct task_struct	*task;
-	static struct irq_chip  twl6030_irq_chip;
-	int			status = 0;
-	int			i;
-	u8			mask[4];
-
-	nr_irqs = TWL6030_NR_IRQS;
-
-	irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0);
-	if (IS_ERR_VALUE(irq_base)) {
-		dev_err(dev, "Fail to allocate IRQ descs\n");
-		return irq_base;
-	}
-
-	irq_domain_add_legacy(node, nr_irqs, irq_base, 0,
-			      &irq_domain_simple_ops, NULL);
-
-	irq_end = irq_base + nr_irqs;
-
-	mask[1] = 0xFF;
-	mask[2] = 0xFF;
-	mask[3] = 0xFF;
-
-	/* mask all int lines */
-	twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_LINE_A, 3);
-	/* mask all int sts */
-	twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_STS_A, 3);
-	/* clear INT_STS_A,B,C */
-	twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_STS_A, 3);
-
-	twl6030_irq_base = irq_base;
-
-	/*
-	 * install an irq handler for each of the modules;
-	 * clone dummy irq_chip since PIH can't *do* anything
-	 */
-	twl6030_irq_chip = dummy_irq_chip;
-	twl6030_irq_chip.name = "twl6030";
-	twl6030_irq_chip.irq_set_type = NULL;
-	twl6030_irq_chip.irq_set_wake = twl6030_irq_set_wake;
-
-	for (i = irq_base; i < irq_end; i++) {
-		irq_set_chip_and_handler(i, &twl6030_irq_chip,
-					 handle_simple_irq);
-		irq_set_chip_data(i, (void *)irq_num);
-		activate_irq(i);
-	}
-
-	dev_info(dev, "PIH (irq %d) chaining IRQs %d..%d\n",
-			irq_num, irq_base, irq_end);
-
-	/* install an irq handler to demultiplex the TWL6030 interrupt */
-	init_completion(&irq_event);
-
-	status = request_irq(irq_num, handle_twl6030_pih, 0, "TWL6030-PIH",
-			     &irq_event);
-	if (status < 0) {
-		dev_err(dev, "could not claim irq %d: %d\n", irq_num, status);
-		goto fail_irq;
-	}
-
-	task = kthread_run(twl6030_irq_thread, (void *)irq_num, "twl6030-irq");
-	if (IS_ERR(task)) {
-		dev_err(dev, "could not create irq %d thread!\n", irq_num);
-		status = PTR_ERR(task);
-		goto fail_kthread;
-	}
-
-	twl_irq = irq_num;
-	register_pm_notifier(&twl6030_irq_pm_notifier_block);
-	return irq_base;
-
-fail_kthread:
-	free_irq(irq_num, &irq_event);
-
-fail_irq:
-	for (i = irq_base; i < irq_end; i++)
-		irq_set_chip_and_handler(i, NULL, NULL);
-
-	return status;
-}
-
-int twl6030_exit_irq(void)
-{
-	unregister_pm_notifier(&twl6030_irq_pm_notifier_block);
-
-	if (twl6030_irq_base) {
-		pr_err("twl6030: can't yet clean up IRQs?\n");
-		return -ENOSYS;
-	}
-	return 0;
-}
-