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Diffstat (limited to 'drivers/mfd/tps65910-irq.c')
-rw-r--r--drivers/mfd/tps65910-irq.c260
1 files changed, 0 insertions, 260 deletions
diff --git a/drivers/mfd/tps65910-irq.c b/drivers/mfd/tps65910-irq.c
deleted file mode 100644
index 09aab3e4776d..000000000000
--- a/drivers/mfd/tps65910-irq.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * tps65910-irq.c -- TI TPS6591x
- *
- * Copyright 2010 Texas Instruments Inc.
- *
- * Author: Graeme Gregory <gg@slimlogic.co.uk>
- * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.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.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/bug.h>
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/irqdomain.h>
-#include <linux/gpio.h>
-#include <linux/mfd/tps65910.h>
-
-/*
- * This is a threaded IRQ handler so can access I2C/SPI. Since all
- * interrupts are clear on read the IRQ line will be reasserted and
- * the physical IRQ will be handled again if another interrupt is
- * asserted while we run - in the normal course of events this is a
- * rare occurrence so we save I2C/SPI reads. We're also assuming that
- * it's rare to get lots of interrupts firing simultaneously so try to
- * minimise I/O.
- */
-static irqreturn_t tps65910_irq(int irq, void *irq_data)
-{
- struct tps65910 *tps65910 = irq_data;
- unsigned int reg;
- u32 irq_sts;
- u32 irq_mask;
- int i;
-
- tps65910_reg_read(tps65910, TPS65910_INT_STS, &reg);
- irq_sts = reg;
- tps65910_reg_read(tps65910, TPS65910_INT_STS2, &reg);
- irq_sts |= reg << 8;
- switch (tps65910_chip_id(tps65910)) {
- case TPS65911:
- tps65910_reg_read(tps65910, TPS65910_INT_STS3, &reg);
- irq_sts |= reg << 16;
- }
-
- tps65910_reg_read(tps65910, TPS65910_INT_MSK, &reg);
- irq_mask = reg;
- tps65910_reg_read(tps65910, TPS65910_INT_MSK2, &reg);
- irq_mask |= reg << 8;
- switch (tps65910_chip_id(tps65910)) {
- case TPS65911:
- tps65910_reg_read(tps65910, TPS65910_INT_MSK3, &reg);
- irq_mask |= reg << 16;
- }
-
- irq_sts &= ~irq_mask;
-
- if (!irq_sts)
- return IRQ_NONE;
-
- for (i = 0; i < tps65910->irq_num; i++) {
-
- if (!(irq_sts & (1 << i)))
- continue;
-
- handle_nested_irq(irq_find_mapping(tps65910->domain, i));
- }
-
- /* Write the STS register back to clear IRQs we handled */
- reg = irq_sts & 0xFF;
- irq_sts >>= 8;
- tps65910_reg_write(tps65910, TPS65910_INT_STS, reg);
- reg = irq_sts & 0xFF;
- tps65910_reg_write(tps65910, TPS65910_INT_STS2, reg);
- switch (tps65910_chip_id(tps65910)) {
- case TPS65911:
- reg = irq_sts >> 8;
- tps65910_reg_write(tps65910, TPS65910_INT_STS3, reg);
- }
-
- return IRQ_HANDLED;
-}
-
-static void tps65910_irq_lock(struct irq_data *data)
-{
- struct tps65910 *tps65910 = irq_data_get_irq_chip_data(data);
-
- mutex_lock(&tps65910->irq_lock);
-}
-
-static void tps65910_irq_sync_unlock(struct irq_data *data)
-{
- struct tps65910 *tps65910 = irq_data_get_irq_chip_data(data);
- u32 reg_mask;
- unsigned int reg;
-
- tps65910_reg_read(tps65910, TPS65910_INT_MSK, &reg);
- reg_mask = reg;
- tps65910_reg_read(tps65910, TPS65910_INT_MSK2, &reg);
- reg_mask |= reg << 8;
- switch (tps65910_chip_id(tps65910)) {
- case TPS65911:
- tps65910_reg_read(tps65910, TPS65910_INT_MSK3, &reg);
- reg_mask |= reg << 16;
- }
-
- if (tps65910->irq_mask != reg_mask) {
- reg = tps65910->irq_mask & 0xFF;
- tps65910_reg_write(tps65910, TPS65910_INT_MSK, reg);
- reg = tps65910->irq_mask >> 8 & 0xFF;
- tps65910_reg_write(tps65910, TPS65910_INT_MSK2, reg);
- switch (tps65910_chip_id(tps65910)) {
- case TPS65911:
- reg = tps65910->irq_mask >> 16;
- tps65910_reg_write(tps65910, TPS65910_INT_MSK3, reg);
- }
- }
- mutex_unlock(&tps65910->irq_lock);
-}
-
-static void tps65910_irq_enable(struct irq_data *data)
-{
- struct tps65910 *tps65910 = irq_data_get_irq_chip_data(data);
-
- tps65910->irq_mask &= ~(1 << data->hwirq);
-}
-
-static void tps65910_irq_disable(struct irq_data *data)
-{
- struct tps65910 *tps65910 = irq_data_get_irq_chip_data(data);
-
- tps65910->irq_mask |= (1 << data->hwirq);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int tps65910_irq_set_wake(struct irq_data *data, unsigned int enable)
-{
- struct tps65910 *tps65910 = irq_data_get_irq_chip_data(data);
- return irq_set_irq_wake(tps65910->chip_irq, enable);
-}
-#else
-#define tps65910_irq_set_wake NULL
-#endif
-
-static struct irq_chip tps65910_irq_chip = {
- .name = "tps65910",
- .irq_bus_lock = tps65910_irq_lock,
- .irq_bus_sync_unlock = tps65910_irq_sync_unlock,
- .irq_disable = tps65910_irq_disable,
- .irq_enable = tps65910_irq_enable,
- .irq_set_wake = tps65910_irq_set_wake,
-};
-
-static int tps65910_irq_map(struct irq_domain *h, unsigned int virq,
- irq_hw_number_t hw)
-{
- struct tps65910 *tps65910 = h->host_data;
-
- irq_set_chip_data(virq, tps65910);
- irq_set_chip_and_handler(virq, &tps65910_irq_chip, handle_edge_irq);
- irq_set_nested_thread(virq, 1);
-
- /* ARM needs us to explicitly flag the IRQ as valid
- * and will set them noprobe when we do so. */
-#ifdef CONFIG_ARM
- set_irq_flags(virq, IRQF_VALID);
-#else
- irq_set_noprobe(virq);
-#endif
-
- return 0;
-}
-
-static struct irq_domain_ops tps65910_domain_ops = {
- .map = tps65910_irq_map,
- .xlate = irq_domain_xlate_twocell,
-};
-
-int tps65910_irq_init(struct tps65910 *tps65910, int irq,
- struct tps65910_platform_data *pdata)
-{
- int ret;
- int flags = IRQF_ONESHOT;
-
- if (!irq) {
- dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
- return -EINVAL;
- }
-
- if (!pdata) {
- dev_warn(tps65910->dev, "No interrupt support, no pdata\n");
- return -EINVAL;
- }
-
- switch (tps65910_chip_id(tps65910)) {
- case TPS65910:
- tps65910->irq_num = TPS65910_NUM_IRQ;
- break;
- case TPS65911:
- tps65910->irq_num = TPS65911_NUM_IRQ;
- break;
- }
-
- if (pdata->irq_base > 0) {
- pdata->irq_base = irq_alloc_descs(pdata->irq_base, 0,
- tps65910->irq_num, -1);
- if (pdata->irq_base < 0) {
- dev_warn(tps65910->dev, "Failed to alloc IRQs: %d\n",
- pdata->irq_base);
- return pdata->irq_base;
- }
- }
-
- tps65910->irq_mask = 0xFFFFFF;
-
- mutex_init(&tps65910->irq_lock);
- tps65910->chip_irq = irq;
- tps65910->irq_base = pdata->irq_base;
-
- if (pdata->irq_base > 0)
- tps65910->domain = irq_domain_add_legacy(tps65910->dev->of_node,
- tps65910->irq_num,
- pdata->irq_base,
- 0,
- &tps65910_domain_ops, tps65910);
- else
- tps65910->domain = irq_domain_add_linear(tps65910->dev->of_node,
- tps65910->irq_num,
- &tps65910_domain_ops, tps65910);
-
- if (!tps65910->domain) {
- dev_err(tps65910->dev, "Failed to create IRQ domain\n");
- return -ENOMEM;
- }
-
- ret = request_threaded_irq(irq, NULL, tps65910_irq, flags,
- "tps65910", tps65910);
-
- irq_set_irq_type(irq, IRQ_TYPE_LEVEL_LOW);
-
- if (ret != 0)
- dev_err(tps65910->dev, "Failed to request IRQ: %d\n", ret);
-
- return ret;
-}
-
-int tps65910_irq_exit(struct tps65910 *tps65910)
-{
- if (tps65910->chip_irq)
- free_irq(tps65910->chip_irq, tps65910);
- return 0;
-}