mfd: Move pcf50633 irq related functions to its own file.
This reduces code clutter a bit and will ease an migration to genirq. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Lars-Peter Clausen
Samuel Ortiz
parent
f7b2a77fe6
commit
380c09f648
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@ -57,7 +57,8 @@ obj-$(CONFIG_PMIC_DA903X) += da903x.o
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max8925-objs := max8925-core.o max8925-i2c.o
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max8925-objs := max8925-core.o max8925-i2c.o
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obj-$(CONFIG_MFD_MAX8925) += max8925.o
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obj-$(CONFIG_MFD_MAX8925) += max8925.o
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obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o pcf50633-irq.o
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pcf50633-objs := pcf50633-core.o pcf50633-irq.o
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obj-$(CONFIG_MFD_PCF50633) += pcf50633.o
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obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
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obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o
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obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
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obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o
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obj-$(CONFIG_ABX500_CORE) += abx500-core.o
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obj-$(CONFIG_ABX500_CORE) += abx500-core.o
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@ -21,16 +21,16 @@
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#include <linux/workqueue.h>
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#include <linux/workqueue.h>
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#include <linux/platform_device.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/i2c.h>
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#include <linux/irq.h>
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/mfd/pcf50633/core.h>
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#include <linux/mfd/pcf50633/core.h>
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/* Two MBCS registers used during cold start */
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int pcf50633_irq_init(struct pcf50633 *pcf, int irq);
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#define PCF50633_REG_MBCS1 0x4b
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void pcf50633_irq_free(struct pcf50633 *pcf);
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#define PCF50633_REG_MBCS2 0x4c
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#ifdef CONFIG_PM
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#define PCF50633_MBCS1_USBPRES 0x01
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int pcf50633_irq_suspend(struct pcf50633 *pcf);
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#define PCF50633_MBCS1_ADAPTPRES 0x01
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int pcf50633_irq_resume(struct pcf50633 *pcf);
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#endif
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static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
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static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
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{
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{
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@ -215,228 +215,6 @@ static struct attribute_group pcf_attr_group = {
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.attrs = pcf_sysfs_entries,
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.attrs = pcf_sysfs_entries,
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};
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};
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int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
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void (*handler) (int, void *), void *data)
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{
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if (irq < 0 || irq >= PCF50633_NUM_IRQ || !handler)
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return -EINVAL;
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if (WARN_ON(pcf->irq_handler[irq].handler))
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return -EBUSY;
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mutex_lock(&pcf->lock);
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pcf->irq_handler[irq].handler = handler;
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pcf->irq_handler[irq].data = data;
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mutex_unlock(&pcf->lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(pcf50633_register_irq);
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int pcf50633_free_irq(struct pcf50633 *pcf, int irq)
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{
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if (irq < 0 || irq >= PCF50633_NUM_IRQ)
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return -EINVAL;
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mutex_lock(&pcf->lock);
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pcf->irq_handler[irq].handler = NULL;
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mutex_unlock(&pcf->lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(pcf50633_free_irq);
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static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask)
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{
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u8 reg, bits, tmp;
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int ret = 0, idx;
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idx = irq >> 3;
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reg = PCF50633_REG_INT1M + idx;
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bits = 1 << (irq & 0x07);
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mutex_lock(&pcf->lock);
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if (mask) {
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ret = __pcf50633_read(pcf, reg, 1, &tmp);
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if (ret < 0)
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goto out;
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tmp |= bits;
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ret = __pcf50633_write(pcf, reg, 1, &tmp);
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if (ret < 0)
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goto out;
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pcf->mask_regs[idx] &= ~bits;
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pcf->mask_regs[idx] |= bits;
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} else {
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ret = __pcf50633_read(pcf, reg, 1, &tmp);
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if (ret < 0)
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goto out;
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tmp &= ~bits;
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ret = __pcf50633_write(pcf, reg, 1, &tmp);
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if (ret < 0)
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goto out;
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pcf->mask_regs[idx] &= ~bits;
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}
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out:
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mutex_unlock(&pcf->lock);
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return ret;
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}
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int pcf50633_irq_mask(struct pcf50633 *pcf, int irq)
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{
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dev_dbg(pcf->dev, "Masking IRQ %d\n", irq);
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return __pcf50633_irq_mask_set(pcf, irq, 1);
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}
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EXPORT_SYMBOL_GPL(pcf50633_irq_mask);
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int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq)
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{
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dev_dbg(pcf->dev, "Unmasking IRQ %d\n", irq);
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return __pcf50633_irq_mask_set(pcf, irq, 0);
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}
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EXPORT_SYMBOL_GPL(pcf50633_irq_unmask);
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int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq)
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{
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u8 reg, bits;
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reg = irq >> 3;
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bits = 1 << (irq & 0x07);
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return pcf->mask_regs[reg] & bits;
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}
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EXPORT_SYMBOL_GPL(pcf50633_irq_mask_get);
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static void pcf50633_irq_call_handler(struct pcf50633 *pcf, int irq)
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{
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if (pcf->irq_handler[irq].handler)
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pcf->irq_handler[irq].handler(irq, pcf->irq_handler[irq].data);
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}
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/* Maximum amount of time ONKEY is held before emergency action is taken */
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#define PCF50633_ONKEY1S_TIMEOUT 8
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static irqreturn_t pcf50633_irq(int irq, void *data)
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{
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struct pcf50633 *pcf = data;
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int ret, i, j;
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u8 pcf_int[5], chgstat;
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/* Read the 5 INT regs in one transaction */
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ret = pcf50633_read_block(pcf, PCF50633_REG_INT1,
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ARRAY_SIZE(pcf_int), pcf_int);
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if (ret != ARRAY_SIZE(pcf_int)) {
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dev_err(pcf->dev, "Error reading INT registers\n");
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/*
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* If this doesn't ACK the interrupt to the chip, we'll be
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* called once again as we're level triggered.
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*/
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goto out;
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}
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/* defeat 8s death from lowsys on A5 */
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pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN, 0x04);
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/* We immediately read the usb and adapter status. We thus make sure
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* only of USBINS/USBREM IRQ handlers are called */
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if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
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chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
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if (chgstat & (0x3 << 4))
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pcf_int[0] &= ~PCF50633_INT1_USBREM;
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else
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pcf_int[0] &= ~PCF50633_INT1_USBINS;
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}
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/* Make sure only one of ADPINS or ADPREM is set */
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if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) {
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chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
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if (chgstat & (0x3 << 4))
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pcf_int[0] &= ~PCF50633_INT1_ADPREM;
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else
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pcf_int[0] &= ~PCF50633_INT1_ADPINS;
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}
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dev_dbg(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x "
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"INT4=0x%02x INT5=0x%02x\n", pcf_int[0],
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pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]);
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/* Some revisions of the chip don't have a 8s standby mode on
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* ONKEY1S press. We try to manually do it in such cases. */
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if ((pcf_int[0] & PCF50633_INT1_SECOND) && pcf->onkey1s_held) {
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dev_info(pcf->dev, "ONKEY1S held for %d secs\n",
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pcf->onkey1s_held);
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if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT)
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if (pcf->pdata->force_shutdown)
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pcf->pdata->force_shutdown(pcf);
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}
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if (pcf_int[2] & PCF50633_INT3_ONKEY1S) {
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dev_info(pcf->dev, "ONKEY1S held\n");
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pcf->onkey1s_held = 1 ;
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/* Unmask IRQ_SECOND */
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pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M,
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PCF50633_INT1_SECOND);
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/* Unmask IRQ_ONKEYR */
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pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT2M,
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PCF50633_INT2_ONKEYR);
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}
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if ((pcf_int[1] & PCF50633_INT2_ONKEYR) && pcf->onkey1s_held) {
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pcf->onkey1s_held = 0;
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/* Mask SECOND and ONKEYR interrupts */
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if (pcf->mask_regs[0] & PCF50633_INT1_SECOND)
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pcf50633_reg_set_bit_mask(pcf,
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PCF50633_REG_INT1M,
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PCF50633_INT1_SECOND,
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PCF50633_INT1_SECOND);
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if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR)
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pcf50633_reg_set_bit_mask(pcf,
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PCF50633_REG_INT2M,
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PCF50633_INT2_ONKEYR,
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PCF50633_INT2_ONKEYR);
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}
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/* Have we just resumed ? */
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if (pcf->is_suspended) {
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pcf->is_suspended = 0;
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/* Set the resume reason filtering out non resumers */
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for (i = 0; i < ARRAY_SIZE(pcf_int); i++)
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pcf->resume_reason[i] = pcf_int[i] &
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pcf->pdata->resumers[i];
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/* Make sure we don't pass on any ONKEY events to
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* userspace now */
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pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF);
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}
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for (i = 0; i < ARRAY_SIZE(pcf_int); i++) {
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/* Unset masked interrupts */
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pcf_int[i] &= ~pcf->mask_regs[i];
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for (j = 0; j < 8 ; j++)
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if (pcf_int[i] & (1 << j))
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pcf50633_irq_call_handler(pcf, (i * 8) + j);
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}
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out:
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return IRQ_HANDLED
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}
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static void
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static void
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pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
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pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
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struct platform_device **pdev)
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struct platform_device **pdev)
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@ -463,58 +241,17 @@ pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
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static int pcf50633_suspend(struct i2c_client *client, pm_message_t state)
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static int pcf50633_suspend(struct i2c_client *client, pm_message_t state)
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{
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{
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struct pcf50633 *pcf;
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struct pcf50633 *pcf;
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int ret = 0, i;
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u8 res[5];
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pcf = i2c_get_clientdata(client);
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pcf = i2c_get_clientdata(client);
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/* Make sure our interrupt handlers are not called
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return pcf50633_irq_suspend(pcf);
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* henceforth */
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disable_irq(pcf->irq);
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/* Save the masks */
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ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M,
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ARRAY_SIZE(pcf->suspend_irq_masks),
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pcf->suspend_irq_masks);
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if (ret < 0) {
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dev_err(pcf->dev, "error saving irq masks\n");
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goto out;
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}
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/* Write wakeup irq masks */
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for (i = 0; i < ARRAY_SIZE(res); i++)
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res[i] = ~pcf->pdata->resumers[i];
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ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
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ARRAY_SIZE(res), &res[0]);
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if (ret < 0) {
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dev_err(pcf->dev, "error writing wakeup irq masks\n");
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goto out;
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}
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pcf->is_suspended = 1;
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out:
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return ret;
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}
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}
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static int pcf50633_resume(struct i2c_client *client)
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static int pcf50633_resume(struct i2c_client *client)
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{
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{
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struct pcf50633 *pcf;
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struct pcf50633 *pcf;
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int ret;
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pcf = i2c_get_clientdata(client);
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pcf = i2c_get_clientdata(client);
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/* Write the saved mask registers */
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return pcf50633_irq_resume(pcf);
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ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
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ARRAY_SIZE(pcf->suspend_irq_masks),
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pcf->suspend_irq_masks);
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if (ret < 0)
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dev_err(pcf->dev, "Error restoring saved suspend masks\n");
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enable_irq(pcf->irq);
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return 0;
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}
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}
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#else
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#else
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#define pcf50633_suspend NULL
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#define pcf50633_suspend NULL
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@ -545,7 +282,6 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
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i2c_set_clientdata(client, pcf);
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i2c_set_clientdata(client, pcf);
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pcf->dev = &client->dev;
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pcf->dev = &client->dev;
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pcf->i2c_client = client;
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pcf->i2c_client = client;
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pcf->irq = client->irq;
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version = pcf50633_reg_read(pcf, 0);
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version = pcf50633_reg_read(pcf, 0);
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variant = pcf50633_reg_read(pcf, 1);
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variant = pcf50633_reg_read(pcf, 1);
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@ -558,22 +294,7 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
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dev_info(pcf->dev, "Probed device version %d variant %d\n",
|
dev_info(pcf->dev, "Probed device version %d variant %d\n",
|
||||||
version, variant);
|
version, variant);
|
||||||
|
|
||||||
/* Enable all interrupts except RTC SECOND */
|
pcf50633_irq_init(pcf, client->irq);
|
||||||
pcf->mask_regs[0] = 0x80;
|
|
||||||
pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]);
|
|
||||||
pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00);
|
|
||||||
pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00);
|
|
||||||
pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00);
|
|
||||||
pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00);
|
|
||||||
|
|
||||||
ret = request_threaded_irq(client->irq, NULL, pcf50633_irq,
|
|
||||||
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
|
||||||
"pcf50633", pcf);
|
|
||||||
|
|
||||||
if (ret) {
|
|
||||||
dev_err(pcf->dev, "Failed to request IRQ %d\n", ret);
|
|
||||||
goto err_free;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Create sub devices */
|
/* Create sub devices */
|
||||||
pcf50633_client_dev_register(pcf, "pcf50633-input",
|
pcf50633_client_dev_register(pcf, "pcf50633-input",
|
||||||
|
|
@ -605,10 +326,6 @@ static int __devinit pcf50633_probe(struct i2c_client *client,
|
||||||
platform_device_add(pdev);
|
platform_device_add(pdev);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (enable_irq_wake(client->irq) < 0)
|
|
||||||
dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source"
|
|
||||||
"in this hardware revision", client->irq);
|
|
||||||
|
|
||||||
ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group);
|
ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group);
|
||||||
if (ret)
|
if (ret)
|
||||||
dev_err(pcf->dev, "error creating sysfs entries\n");
|
dev_err(pcf->dev, "error creating sysfs entries\n");
|
||||||
|
|
@ -630,7 +347,7 @@ static int __devexit pcf50633_remove(struct i2c_client *client)
|
||||||
struct pcf50633 *pcf = i2c_get_clientdata(client);
|
struct pcf50633 *pcf = i2c_get_clientdata(client);
|
||||||
int i;
|
int i;
|
||||||
|
|
||||||
free_irq(pcf->irq, pcf);
|
pcf50633_irq_free(pcf);
|
||||||
|
|
||||||
platform_device_unregister(pcf->input_pdev);
|
platform_device_unregister(pcf->input_pdev);
|
||||||
platform_device_unregister(pcf->rtc_pdev);
|
platform_device_unregister(pcf->rtc_pdev);
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,318 @@
|
||||||
|
/* NXP PCF50633 Power Management Unit (PMU) driver
|
||||||
|
*
|
||||||
|
* (C) 2006-2008 by Openmoko, Inc.
|
||||||
|
* Author: Harald Welte <laforge@openmoko.org>
|
||||||
|
* Balaji Rao <balajirrao@openmoko.org>
|
||||||
|
* 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, or (at your
|
||||||
|
* option) any later version.
|
||||||
|
*
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <linux/interrupt.h>
|
||||||
|
#include <linux/kernel.h>
|
||||||
|
#include <linux/mutex.h>
|
||||||
|
#include <linux/slab.h>
|
||||||
|
|
||||||
|
#include <linux/mfd/pcf50633/core.h>
|
||||||
|
|
||||||
|
/* Two MBCS registers used during cold start */
|
||||||
|
#define PCF50633_REG_MBCS1 0x4b
|
||||||
|
#define PCF50633_REG_MBCS2 0x4c
|
||||||
|
#define PCF50633_MBCS1_USBPRES 0x01
|
||||||
|
#define PCF50633_MBCS1_ADAPTPRES 0x01
|
||||||
|
|
||||||
|
int pcf50633_register_irq(struct pcf50633 *pcf, int irq,
|
||||||
|
void (*handler) (int, void *), void *data)
|
||||||
|
{
|
||||||
|
if (irq < 0 || irq >= PCF50633_NUM_IRQ || !handler)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
if (WARN_ON(pcf->irq_handler[irq].handler))
|
||||||
|
return -EBUSY;
|
||||||
|
|
||||||
|
mutex_lock(&pcf->lock);
|
||||||
|
pcf->irq_handler[irq].handler = handler;
|
||||||
|
pcf->irq_handler[irq].data = data;
|
||||||
|
mutex_unlock(&pcf->lock);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(pcf50633_register_irq);
|
||||||
|
|
||||||
|
int pcf50633_free_irq(struct pcf50633 *pcf, int irq)
|
||||||
|
{
|
||||||
|
if (irq < 0 || irq >= PCF50633_NUM_IRQ)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
mutex_lock(&pcf->lock);
|
||||||
|
pcf->irq_handler[irq].handler = NULL;
|
||||||
|
mutex_unlock(&pcf->lock);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(pcf50633_free_irq);
|
||||||
|
|
||||||
|
static int __pcf50633_irq_mask_set(struct pcf50633 *pcf, int irq, u8 mask)
|
||||||
|
{
|
||||||
|
u8 reg, bit;
|
||||||
|
int ret = 0, idx;
|
||||||
|
|
||||||
|
idx = irq >> 3;
|
||||||
|
reg = PCF50633_REG_INT1M + idx;
|
||||||
|
bit = 1 << (irq & 0x07);
|
||||||
|
|
||||||
|
pcf50633_reg_set_bit_mask(pcf, reg, bit, mask ? bit : 0);
|
||||||
|
|
||||||
|
mutex_lock(&pcf->lock);
|
||||||
|
|
||||||
|
if (mask)
|
||||||
|
pcf->mask_regs[idx] |= bit;
|
||||||
|
else
|
||||||
|
pcf->mask_regs[idx] &= ~bit;
|
||||||
|
|
||||||
|
mutex_unlock(&pcf->lock);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int pcf50633_irq_mask(struct pcf50633 *pcf, int irq)
|
||||||
|
{
|
||||||
|
dev_dbg(pcf->dev, "Masking IRQ %d\n", irq);
|
||||||
|
|
||||||
|
return __pcf50633_irq_mask_set(pcf, irq, 1);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(pcf50633_irq_mask);
|
||||||
|
|
||||||
|
int pcf50633_irq_unmask(struct pcf50633 *pcf, int irq)
|
||||||
|
{
|
||||||
|
dev_dbg(pcf->dev, "Unmasking IRQ %d\n", irq);
|
||||||
|
|
||||||
|
return __pcf50633_irq_mask_set(pcf, irq, 0);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(pcf50633_irq_unmask);
|
||||||
|
|
||||||
|
int pcf50633_irq_mask_get(struct pcf50633 *pcf, int irq)
|
||||||
|
{
|
||||||
|
u8 reg, bits;
|
||||||
|
|
||||||
|
reg = irq >> 3;
|
||||||
|
bits = 1 << (irq & 0x07);
|
||||||
|
|
||||||
|
return pcf->mask_regs[reg] & bits;
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(pcf50633_irq_mask_get);
|
||||||
|
|
||||||
|
static void pcf50633_irq_call_handler(struct pcf50633 *pcf, int irq)
|
||||||
|
{
|
||||||
|
if (pcf->irq_handler[irq].handler)
|
||||||
|
pcf->irq_handler[irq].handler(irq, pcf->irq_handler[irq].data);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Maximum amount of time ONKEY is held before emergency action is taken */
|
||||||
|
#define PCF50633_ONKEY1S_TIMEOUT 8
|
||||||
|
|
||||||
|
static irqreturn_t pcf50633_irq(int irq, void *data)
|
||||||
|
{
|
||||||
|
struct pcf50633 *pcf = data;
|
||||||
|
int ret, i, j;
|
||||||
|
u8 pcf_int[5], chgstat;
|
||||||
|
|
||||||
|
/* Read the 5 INT regs in one transaction */
|
||||||
|
ret = pcf50633_read_block(pcf, PCF50633_REG_INT1,
|
||||||
|
ARRAY_SIZE(pcf_int), pcf_int);
|
||||||
|
if (ret != ARRAY_SIZE(pcf_int)) {
|
||||||
|
dev_err(pcf->dev, "Error reading INT registers\n");
|
||||||
|
|
||||||
|
/*
|
||||||
|
* If this doesn't ACK the interrupt to the chip, we'll be
|
||||||
|
* called once again as we're level triggered.
|
||||||
|
*/
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* defeat 8s death from lowsys on A5 */
|
||||||
|
pcf50633_reg_write(pcf, PCF50633_REG_OOCSHDWN, 0x04);
|
||||||
|
|
||||||
|
/* We immediately read the usb and adapter status. We thus make sure
|
||||||
|
* only of USBINS/USBREM IRQ handlers are called */
|
||||||
|
if (pcf_int[0] & (PCF50633_INT1_USBINS | PCF50633_INT1_USBREM)) {
|
||||||
|
chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
|
||||||
|
if (chgstat & (0x3 << 4))
|
||||||
|
pcf_int[0] &= ~PCF50633_INT1_USBREM;
|
||||||
|
else
|
||||||
|
pcf_int[0] &= ~PCF50633_INT1_USBINS;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Make sure only one of ADPINS or ADPREM is set */
|
||||||
|
if (pcf_int[0] & (PCF50633_INT1_ADPINS | PCF50633_INT1_ADPREM)) {
|
||||||
|
chgstat = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
|
||||||
|
if (chgstat & (0x3 << 4))
|
||||||
|
pcf_int[0] &= ~PCF50633_INT1_ADPREM;
|
||||||
|
else
|
||||||
|
pcf_int[0] &= ~PCF50633_INT1_ADPINS;
|
||||||
|
}
|
||||||
|
|
||||||
|
dev_dbg(pcf->dev, "INT1=0x%02x INT2=0x%02x INT3=0x%02x "
|
||||||
|
"INT4=0x%02x INT5=0x%02x\n", pcf_int[0],
|
||||||
|
pcf_int[1], pcf_int[2], pcf_int[3], pcf_int[4]);
|
||||||
|
|
||||||
|
/* Some revisions of the chip don't have a 8s standby mode on
|
||||||
|
* ONKEY1S press. We try to manually do it in such cases. */
|
||||||
|
if ((pcf_int[0] & PCF50633_INT1_SECOND) && pcf->onkey1s_held) {
|
||||||
|
dev_info(pcf->dev, "ONKEY1S held for %d secs\n",
|
||||||
|
pcf->onkey1s_held);
|
||||||
|
if (pcf->onkey1s_held++ == PCF50633_ONKEY1S_TIMEOUT)
|
||||||
|
if (pcf->pdata->force_shutdown)
|
||||||
|
pcf->pdata->force_shutdown(pcf);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (pcf_int[2] & PCF50633_INT3_ONKEY1S) {
|
||||||
|
dev_info(pcf->dev, "ONKEY1S held\n");
|
||||||
|
pcf->onkey1s_held = 1 ;
|
||||||
|
|
||||||
|
/* Unmask IRQ_SECOND */
|
||||||
|
pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M,
|
||||||
|
PCF50633_INT1_SECOND);
|
||||||
|
|
||||||
|
/* Unmask IRQ_ONKEYR */
|
||||||
|
pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT2M,
|
||||||
|
PCF50633_INT2_ONKEYR);
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((pcf_int[1] & PCF50633_INT2_ONKEYR) && pcf->onkey1s_held) {
|
||||||
|
pcf->onkey1s_held = 0;
|
||||||
|
|
||||||
|
/* Mask SECOND and ONKEYR interrupts */
|
||||||
|
if (pcf->mask_regs[0] & PCF50633_INT1_SECOND)
|
||||||
|
pcf50633_reg_set_bit_mask(pcf,
|
||||||
|
PCF50633_REG_INT1M,
|
||||||
|
PCF50633_INT1_SECOND,
|
||||||
|
PCF50633_INT1_SECOND);
|
||||||
|
|
||||||
|
if (pcf->mask_regs[1] & PCF50633_INT2_ONKEYR)
|
||||||
|
pcf50633_reg_set_bit_mask(pcf,
|
||||||
|
PCF50633_REG_INT2M,
|
||||||
|
PCF50633_INT2_ONKEYR,
|
||||||
|
PCF50633_INT2_ONKEYR);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Have we just resumed ? */
|
||||||
|
if (pcf->is_suspended) {
|
||||||
|
pcf->is_suspended = 0;
|
||||||
|
|
||||||
|
/* Set the resume reason filtering out non resumers */
|
||||||
|
for (i = 0; i < ARRAY_SIZE(pcf_int); i++)
|
||||||
|
pcf->resume_reason[i] = pcf_int[i] &
|
||||||
|
pcf->pdata->resumers[i];
|
||||||
|
|
||||||
|
/* Make sure we don't pass on any ONKEY events to
|
||||||
|
* userspace now */
|
||||||
|
pcf_int[1] &= ~(PCF50633_INT2_ONKEYR | PCF50633_INT2_ONKEYF);
|
||||||
|
}
|
||||||
|
|
||||||
|
for (i = 0; i < ARRAY_SIZE(pcf_int); i++) {
|
||||||
|
/* Unset masked interrupts */
|
||||||
|
pcf_int[i] &= ~pcf->mask_regs[i];
|
||||||
|
|
||||||
|
for (j = 0; j < 8 ; j++)
|
||||||
|
if (pcf_int[i] & (1 << j))
|
||||||
|
pcf50633_irq_call_handler(pcf, (i * 8) + j);
|
||||||
|
}
|
||||||
|
|
||||||
|
out:
|
||||||
|
return IRQ_HANDLED;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_PM
|
||||||
|
|
||||||
|
int pcf50633_irq_suspend(struct pcf50633 *pcf)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
int i;
|
||||||
|
u8 res[5];
|
||||||
|
|
||||||
|
|
||||||
|
/* Make sure our interrupt handlers are not called
|
||||||
|
* henceforth */
|
||||||
|
disable_irq(pcf->irq);
|
||||||
|
|
||||||
|
/* Save the masks */
|
||||||
|
ret = pcf50633_read_block(pcf, PCF50633_REG_INT1M,
|
||||||
|
ARRAY_SIZE(pcf->suspend_irq_masks),
|
||||||
|
pcf->suspend_irq_masks);
|
||||||
|
if (ret < 0) {
|
||||||
|
dev_err(pcf->dev, "error saving irq masks\n");
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Write wakeup irq masks */
|
||||||
|
for (i = 0; i < ARRAY_SIZE(res); i++)
|
||||||
|
res[i] = ~pcf->pdata->resumers[i];
|
||||||
|
|
||||||
|
ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
|
||||||
|
ARRAY_SIZE(res), &res[0]);
|
||||||
|
if (ret < 0) {
|
||||||
|
dev_err(pcf->dev, "error writing wakeup irq masks\n");
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
pcf->is_suspended = 1;
|
||||||
|
|
||||||
|
out:
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
int pcf50633_irq_resume(struct pcf50633 *pcf)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
/* Write the saved mask registers */
|
||||||
|
ret = pcf50633_write_block(pcf, PCF50633_REG_INT1M,
|
||||||
|
ARRAY_SIZE(pcf->suspend_irq_masks),
|
||||||
|
pcf->suspend_irq_masks);
|
||||||
|
if (ret < 0)
|
||||||
|
dev_err(pcf->dev, "Error restoring saved suspend masks\n");
|
||||||
|
|
||||||
|
enable_irq(pcf->irq);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
|
int pcf50633_irq_init(struct pcf50633 *pcf, int irq)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
pcf->irq = irq;
|
||||||
|
|
||||||
|
/* Enable all interrupts except RTC SECOND */
|
||||||
|
pcf->mask_regs[0] = 0x80;
|
||||||
|
pcf50633_reg_write(pcf, PCF50633_REG_INT1M, pcf->mask_regs[0]);
|
||||||
|
pcf50633_reg_write(pcf, PCF50633_REG_INT2M, 0x00);
|
||||||
|
pcf50633_reg_write(pcf, PCF50633_REG_INT3M, 0x00);
|
||||||
|
pcf50633_reg_write(pcf, PCF50633_REG_INT4M, 0x00);
|
||||||
|
pcf50633_reg_write(pcf, PCF50633_REG_INT5M, 0x00);
|
||||||
|
|
||||||
|
ret = request_threaded_irq(irq, NULL, pcf50633_irq,
|
||||||
|
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
|
||||||
|
"pcf50633", pcf);
|
||||||
|
|
||||||
|
if (ret)
|
||||||
|
dev_err(pcf->dev, "Failed to request IRQ %d\n", ret);
|
||||||
|
|
||||||
|
if (enable_irq_wake(irq) < 0)
|
||||||
|
dev_err(pcf->dev, "IRQ %u cannot be enabled as wake-up source"
|
||||||
|
"in this hardware revision", irq);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
void pcf50633_irq_free(struct pcf50633 *pcf)
|
||||||
|
{
|
||||||
|
free_irq(pcf->irq, pcf);
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue