These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / drivers / base / regmap / regmap-irq.c

diff --git a/kernel/drivers/base/regmap/regmap-irq.c b/kernel/drivers/base/regmap/regmap-irq.c
index a6c3f75..8d16db5 100644 (file)
--- a/kernel/drivers/base/regmap/regmap-irq.c
+++ b/kernel/drivers/base/regmap/regmap-irq.c
@@ -63,6 +63,7 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
        struct regmap *map = d->map;
        int i, ret;
        u32 reg;
+       u32 unmask_offset;
 
        if (d->chip->runtime_pm) {
                ret = pm_runtime_get_sync(map->dev);
@@ -79,12 +80,28 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
        for (i = 0; i < d->chip->num_regs; i++) {
                reg = d->chip->mask_base +
                        (i * map->reg_stride * d->irq_reg_stride);
-               if (d->chip->mask_invert)
+               if (d->chip->mask_invert) {
                        ret = regmap_update_bits(d->map, reg,
                                         d->mask_buf_def[i], ~d->mask_buf[i]);
-               else
+               } else if (d->chip->unmask_base) {
+                       /* set mask with mask_base register */
+                       ret = regmap_update_bits(d->map, reg,
+                                       d->mask_buf_def[i], ~d->mask_buf[i]);
+                       if (ret < 0)
+                               dev_err(d->map->dev,
+                                       "Failed to sync unmasks in %x\n",
+                                       reg);
+                       unmask_offset = d->chip->unmask_base -
+                                                       d->chip->mask_base;
+                       /* clear mask with unmask_base register */
+                       ret = regmap_update_bits(d->map,
+                                       reg + unmask_offset,
+                                       d->mask_buf_def[i],
+                                       d->mask_buf[i]);
+               } else {
                        ret = regmap_update_bits(d->map, reg,
                                         d->mask_buf_def[i], d->mask_buf[i]);
+               }
                if (ret != 0)
                        dev_err(d->map->dev, "Failed to sync masks in %x\n",
                                reg);
@@ -109,14 +126,18 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
                if (!d->chip->init_ack_masked)
                        continue;
                /*
-                * Ack all the masked interrupts uncondictionly,
+                * Ack all the masked interrupts unconditionally,
                 * OR if there is masked interrupt which hasn't been Acked,
                 * it'll be ignored in irq handler, then may introduce irq storm
                 */
                if (d->mask_buf[i] && (d->chip->ack_base || d->chip->use_ack)) {
                        reg = d->chip->ack_base +
                                (i * map->reg_stride * d->irq_reg_stride);
-                       ret = regmap_write(map, reg, d->mask_buf[i]);
+                       /* some chips ack by write 0 */
+                       if (d->chip->ack_invert)
+                               ret = regmap_write(map, reg, ~d->mask_buf[i]);
+                       else
+                               ret = regmap_write(map, reg, d->mask_buf[i]);
                        if (ret != 0)
                                dev_err(d->map->dev, "Failed to ack 0x%x: %d\n",
                                        reg, ret);
@@ -209,7 +230,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
         * Read in the statuses, using a single bulk read if possible
         * in order to reduce the I/O overheads.
         */
-       if (!map->use_single_rw && map->reg_stride == 1 &&
+       if (!map->use_single_read && map->reg_stride == 1 &&
            data->irq_reg_stride == 1) {
                u8 *buf8 = data->status_reg_buf;
                u16 *buf16 = data->status_reg_buf;
@@ -306,19 +327,12 @@ static int regmap_irq_map(struct irq_domain *h, unsigned int virq,
        irq_set_chip_data(virq, data);
        irq_set_chip(virq, &data->irq_chip);
        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 regmap_domain_ops = {
+static const struct irq_domain_ops regmap_domain_ops = {
        .map    = regmap_irq_map,
        .xlate  = irq_domain_xlate_twocell,
 };
@@ -346,6 +360,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
        int i;
        int ret = -ENOMEM;
        u32 reg;
+       u32 unmask_offset;
 
        if (chip->num_regs <= 0)
                return -EINVAL;
@@ -405,7 +420,7 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
        else
                d->irq_reg_stride = 1;
 
-       if (!map->use_single_rw && map->reg_stride == 1 &&
+       if (!map->use_single_read && map->reg_stride == 1 &&
            d->irq_reg_stride == 1) {
                d->status_reg_buf = kmalloc(map->format.val_bytes *
                                            chip->num_regs, GFP_KERNEL);
@@ -427,7 +442,14 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
                if (chip->mask_invert)
                        ret = regmap_update_bits(map, reg,
                                         d->mask_buf[i], ~d->mask_buf[i]);
-               else
+               else if (d->chip->unmask_base) {
+                       unmask_offset = d->chip->unmask_base -
+                                       d->chip->mask_base;
+                       ret = regmap_update_bits(d->map,
+                                       reg + unmask_offset,
+                                       d->mask_buf[i],
+                                       d->mask_buf[i]);
+               } else
                        ret = regmap_update_bits(map, reg,
                                         d->mask_buf[i], d->mask_buf[i]);
                if (ret != 0) {
@@ -452,7 +474,11 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
                if (d->status_buf[i] && (chip->ack_base || chip->use_ack)) {
                        reg = chip->ack_base +
                                (i * map->reg_stride * d->irq_reg_stride);
-                       ret = regmap_write(map, reg,
+                       if (chip->ack_invert)
+                               ret = regmap_write(map, reg,
+                                       ~(d->status_buf[i] & d->mask_buf[i]));
+                       else
+                               ret = regmap_write(map, reg,
                                        d->status_buf[i] & d->mask_buf[i]);
                        if (ret != 0) {
                                dev_err(map->dev, "Failed to ack 0x%x: %d\n",