mfd: Add basic tps6586x interrupt support
Add support for enabling and disabling tps6586x subdevice interrupts Signed-off-by: Gary King <gking@nvidia.com> Acked-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Gary King
Samuel Ortiz
parent
39368eda96
commit
c26448c484
@ -563,8 +563,8 @@ config MFD_JZ4740_ADC
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This driver is necessary for jz4740-battery and jz4740-hwmon driver.
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config MFD_TPS6586X
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tristate "TPS6586x Power Management chips"
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depends on I2C && GPIOLIB
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bool "TPS6586x Power Management chips"
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depends on I2C=y && GPIOLIB && GENERIC_HARDIRQS
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select MFD_CORE
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help
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If you say yes here you get support for the TPS6586X series of
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@ -15,6 +15,8 @@
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* published by the Free Software Foundation.
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*/
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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@ -29,16 +31,76 @@
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#define TPS6586X_GPIOSET1 0x5d
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#define TPS6586X_GPIOSET2 0x5e
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/* interrupt control registers */
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#define TPS6586X_INT_ACK1 0xb5
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#define TPS6586X_INT_ACK2 0xb6
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#define TPS6586X_INT_ACK3 0xb7
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#define TPS6586X_INT_ACK4 0xb8
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/* interrupt mask registers */
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#define TPS6586X_INT_MASK1 0xb0
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#define TPS6586X_INT_MASK2 0xb1
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#define TPS6586X_INT_MASK3 0xb2
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#define TPS6586X_INT_MASK4 0xb3
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#define TPS6586X_INT_MASK5 0xb4
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/* device id */
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#define TPS6586X_VERSIONCRC 0xcd
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#define TPS658621A_VERSIONCRC 0x15
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struct tps6586x_irq_data {
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u8 mask_reg;
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u8 mask_mask;
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};
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#define TPS6586X_IRQ(_reg, _mask) \
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{ \
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.mask_reg = (_reg) - TPS6586X_INT_MASK1, \
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.mask_mask = (_mask), \
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}
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static const struct tps6586x_irq_data tps6586x_irqs[] = {
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[TPS6586X_INT_PLDO_0] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
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[TPS6586X_INT_PLDO_1] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
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[TPS6586X_INT_PLDO_2] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
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[TPS6586X_INT_PLDO_3] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
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[TPS6586X_INT_PLDO_4] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
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[TPS6586X_INT_PLDO_5] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
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[TPS6586X_INT_PLDO_6] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
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[TPS6586X_INT_PLDO_7] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
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[TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
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[TPS6586X_INT_ADC] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
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[TPS6586X_INT_PLDO_8] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
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[TPS6586X_INT_PLDO_9] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
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[TPS6586X_INT_PSM_0] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
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[TPS6586X_INT_PSM_1] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
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[TPS6586X_INT_PSM_2] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
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[TPS6586X_INT_PSM_3] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
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[TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
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[TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
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[TPS6586X_INT_USB_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
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[TPS6586X_INT_AC_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
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[TPS6586X_INT_BAT_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
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[TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
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[TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
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[TPS6586X_INT_PP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
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[TPS6586X_INT_RESUME] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
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[TPS6586X_INT_LOW_SYS] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
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[TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
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};
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struct tps6586x {
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struct mutex lock;
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struct device *dev;
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struct i2c_client *client;
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struct gpio_chip gpio;
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struct irq_chip irq_chip;
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struct mutex irq_lock;
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int irq_base;
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u32 irq_en;
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u8 mask_cache[5];
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u8 mask_reg[5];
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};
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static inline int __tps6586x_read(struct i2c_client *client,
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@ -262,6 +324,129 @@ static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
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return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
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}
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static void tps6586x_irq_lock(unsigned int irq)
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{
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struct tps6586x *tps6586x = get_irq_chip_data(irq);
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mutex_lock(&tps6586x->irq_lock);
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}
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static void tps6586x_irq_enable(unsigned int irq)
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{
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struct tps6586x *tps6586x = get_irq_chip_data(irq);
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unsigned int __irq = irq - tps6586x->irq_base;
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const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
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tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
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tps6586x->irq_en |= (1 << __irq);
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}
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static void tps6586x_irq_disable(unsigned int irq)
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{
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struct tps6586x *tps6586x = get_irq_chip_data(irq);
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unsigned int __irq = irq - tps6586x->irq_base;
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const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
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tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
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tps6586x->irq_en &= ~(1 << __irq);
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}
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static void tps6586x_irq_sync_unlock(unsigned int irq)
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{
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struct tps6586x *tps6586x = get_irq_chip_data(irq);
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int i;
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for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
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if (tps6586x->mask_reg[i] != tps6586x->mask_cache[i]) {
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if (!WARN_ON(tps6586x_write(tps6586x->dev,
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TPS6586X_INT_MASK1 + i,
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tps6586x->mask_reg[i])))
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tps6586x->mask_cache[i] = tps6586x->mask_reg[i];
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}
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}
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mutex_unlock(&tps6586x->irq_lock);
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}
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static irqreturn_t tps6586x_irq(int irq, void *data)
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{
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struct tps6586x *tps6586x = data;
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u32 acks;
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int ret = 0;
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ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
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sizeof(acks), (uint8_t *)&acks);
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if (ret < 0) {
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dev_err(tps6586x->dev, "failed to read interrupt status\n");
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return IRQ_NONE;
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}
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acks = le32_to_cpu(acks);
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while (acks) {
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int i = __ffs(acks);
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if (tps6586x->irq_en & (1 << i))
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handle_nested_irq(tps6586x->irq_base + i);
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acks &= ~(1 << i);
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}
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return IRQ_HANDLED;
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}
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static int __devinit tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
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int irq_base)
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{
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int i, ret;
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u8 tmp[4];
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if (!irq_base) {
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dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n");
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return -EINVAL;
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}
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mutex_init(&tps6586x->irq_lock);
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for (i = 0; i < 5; i++) {
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tps6586x->mask_cache[i] = 0xff;
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tps6586x->mask_reg[i] = 0xff;
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tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
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}
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tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
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tps6586x->irq_base = irq_base;
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tps6586x->irq_chip.name = "tps6586x";
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tps6586x->irq_chip.enable = tps6586x_irq_enable;
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tps6586x->irq_chip.disable = tps6586x_irq_disable;
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tps6586x->irq_chip.bus_lock = tps6586x_irq_lock;
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tps6586x->irq_chip.bus_sync_unlock = tps6586x_irq_sync_unlock;
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for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) {
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int __irq = i + tps6586x->irq_base;
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set_irq_chip_data(__irq, tps6586x);
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set_irq_chip_and_handler(__irq, &tps6586x->irq_chip,
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handle_simple_irq);
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set_irq_nested_thread(__irq, 1);
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#ifdef CONFIG_ARM
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set_irq_flags(__irq, IRQF_VALID);
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#endif
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}
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ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
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"tps6586x", tps6586x);
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if (!ret) {
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device_init_wakeup(tps6586x->dev, 1);
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enable_irq_wake(irq);
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}
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return ret;
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}
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static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x,
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struct tps6586x_platform_data *pdata)
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{
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@ -327,6 +512,15 @@ static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
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mutex_init(&tps6586x->lock);
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if (client->irq) {
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ret = tps6586x_irq_init(tps6586x, client->irq,
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pdata->irq_base);
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if (ret) {
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dev_err(&client->dev, "IRQ init failed: %d\n", ret);
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goto err_irq_init;
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}
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}
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ret = tps6586x_add_subdevs(tps6586x, pdata);
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if (ret) {
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dev_err(&client->dev, "add devices failed: %d\n", ret);
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@ -338,6 +532,9 @@ static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
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return 0;
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err_add_devs:
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if (client->irq)
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free_irq(client->irq, tps6586x);
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err_irq_init:
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kfree(tps6586x);
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return ret;
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}
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@ -348,6 +545,9 @@ static int __devexit tps6586x_i2c_remove(struct i2c_client *client)
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struct tps6586x_platform_data *pdata = client->dev.platform_data;
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int ret;
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if (client->irq)
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free_irq(client->irq, tps6586x);
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if (pdata->gpio_base) {
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ret = gpiochip_remove(&tps6586x->gpio);
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if (ret)
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@ -18,6 +18,36 @@ enum {
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TPS6586X_ID_LDO_RTC,
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};
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enum {
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TPS6586X_INT_PLDO_0,
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TPS6586X_INT_PLDO_1,
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TPS6586X_INT_PLDO_2,
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TPS6586X_INT_PLDO_3,
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TPS6586X_INT_PLDO_4,
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TPS6586X_INT_PLDO_5,
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TPS6586X_INT_PLDO_6,
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TPS6586X_INT_PLDO_7,
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TPS6586X_INT_COMP_DET,
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TPS6586X_INT_ADC,
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TPS6586X_INT_PLDO_8,
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TPS6586X_INT_PLDO_9,
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TPS6586X_INT_PSM_0,
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TPS6586X_INT_PSM_1,
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TPS6586X_INT_PSM_2,
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TPS6586X_INT_PSM_3,
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TPS6586X_INT_RTC_ALM1,
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TPS6586X_INT_ACUSB_OVP,
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TPS6586X_INT_USB_DET,
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TPS6586X_INT_AC_DET,
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TPS6586X_INT_BAT_DET,
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TPS6586X_INT_CHG_STAT,
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TPS6586X_INT_CHG_TEMP,
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TPS6586X_INT_PP,
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TPS6586X_INT_RESUME,
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TPS6586X_INT_LOW_SYS,
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TPS6586X_INT_RTC_ALM2,
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};
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struct tps6586x_subdev_info {
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int id;
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const char *name;
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@ -29,6 +59,7 @@ struct tps6586x_platform_data {
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struct tps6586x_subdev_info *subdevs;
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int gpio_base;
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int irq_base;
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};
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/*
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