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path: root/drivers/mfd/wm831x-irq.c
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Diffstat (limited to 'drivers/mfd/wm831x-irq.c')
-rw-r--r--drivers/mfd/wm831x-irq.c101
1 files changed, 64 insertions, 37 deletions
diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c
index 2be9628074bd..ecc9d6d62fad 100644
--- a/drivers/mfd/wm831x-irq.c
+++ b/drivers/mfd/wm831x-irq.c
@@ -18,6 +18,7 @@
#include <linux/irq.h>
#include <linux/mfd/core.h>
#include <linux/interrupt.h>
+#include <linux/irqdomain.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
@@ -328,7 +329,7 @@ static inline int irq_data_to_status_reg(struct wm831x_irq_data *irq_data)
static inline struct wm831x_irq_data *irq_to_wm831x_irq(struct wm831x *wm831x,
int irq)
{
- return &wm831x_irqs[irq - wm831x->irq_base];
+ return &wm831x_irqs[irq];
}
static void wm831x_irq_lock(struct irq_data *data)
@@ -374,7 +375,7 @@ static void wm831x_irq_enable(struct irq_data *data)
{
struct wm831x *wm831x = irq_data_get_irq_chip_data(data);
struct wm831x_irq_data *irq_data = irq_to_wm831x_irq(wm831x,
- data->irq);
+ data->hwirq);
wm831x->irq_masks_cur[irq_data->reg - 1] &= ~irq_data->mask;
}
@@ -383,7 +384,7 @@ static void wm831x_irq_disable(struct irq_data *data)
{
struct wm831x *wm831x = irq_data_get_irq_chip_data(data);
struct wm831x_irq_data *irq_data = irq_to_wm831x_irq(wm831x,
- data->irq);
+ data->hwirq);
wm831x->irq_masks_cur[irq_data->reg - 1] |= irq_data->mask;
}
@@ -393,7 +394,7 @@ static int wm831x_irq_set_type(struct irq_data *data, unsigned int type)
struct wm831x *wm831x = irq_data_get_irq_chip_data(data);
int irq;
- irq = data->irq - wm831x->irq_base;
+ irq = data->hwirq;
if (irq < WM831X_IRQ_GPIO_1 || irq > WM831X_IRQ_GPIO_11) {
/* Ignore internal-only IRQs */
@@ -469,9 +470,11 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data)
* descriptors.
*/
if (primary & WM831X_TCHPD_INT)
- handle_nested_irq(wm831x->irq_base + WM831X_IRQ_TCHPD);
+ handle_nested_irq(irq_find_mapping(wm831x->irq_domain,
+ WM831X_IRQ_TCHPD));
if (primary & WM831X_TCHDATA_INT)
- handle_nested_irq(wm831x->irq_base + WM831X_IRQ_TCHDATA);
+ handle_nested_irq(irq_find_mapping(wm831x->irq_domain,
+ WM831X_IRQ_TCHDATA));
primary &= ~(WM831X_TCHDATA_EINT | WM831X_TCHPD_EINT);
for (i = 0; i < ARRAY_SIZE(wm831x_irqs); i++) {
@@ -507,7 +510,8 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data)
}
if (*status & wm831x_irqs[i].mask)
- handle_nested_irq(wm831x->irq_base + i);
+ handle_nested_irq(irq_find_mapping(wm831x->irq_domain,
+ i));
/* Simulate an edge triggered IRQ by polling the input
* status. This is sucky but improves interoperability.
@@ -516,7 +520,8 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data)
wm831x->gpio_level[i - WM831X_IRQ_GPIO_1]) {
ret = wm831x_reg_read(wm831x, WM831X_GPIO_LEVEL);
while (ret & 1 << (i - WM831X_IRQ_GPIO_1)) {
- handle_nested_irq(wm831x->irq_base + i);
+ handle_nested_irq(irq_find_mapping(wm831x->irq_domain,
+ i));
ret = wm831x_reg_read(wm831x,
WM831X_GPIO_LEVEL);
}
@@ -527,10 +532,34 @@ out:
return IRQ_HANDLED;
}
+static int wm831x_irq_map(struct irq_domain *h, unsigned int virq,
+ irq_hw_number_t hw)
+{
+ irq_set_chip_data(virq, h->host_data);
+ irq_set_chip_and_handler(virq, &wm831x_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 wm831x_irq_domain_ops = {
+ .map = wm831x_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
int wm831x_irq_init(struct wm831x *wm831x, int irq)
{
struct wm831x_pdata *pdata = wm831x->dev->platform_data;
- int i, cur_irq, ret;
+ struct irq_domain *domain;
+ int i, ret, irq_base;
mutex_init(&wm831x->irq_lock);
@@ -543,18 +572,33 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq)
}
/* Try to dynamically allocate IRQs if no base is specified */
- if (!pdata || !pdata->irq_base)
- wm831x->irq_base = -1;
+ if (pdata && pdata->irq_base) {
+ irq_base = irq_alloc_descs(pdata->irq_base, 0,
+ WM831X_NUM_IRQS, 0);
+ if (irq_base < 0) {
+ dev_warn(wm831x->dev, "Failed to allocate IRQs: %d\n",
+ irq_base);
+ irq_base = 0;
+ }
+ } else {
+ irq_base = 0;
+ }
+
+ if (irq_base)
+ domain = irq_domain_add_legacy(wm831x->dev->of_node,
+ ARRAY_SIZE(wm831x_irqs),
+ irq_base, 0,
+ &wm831x_irq_domain_ops,
+ wm831x);
else
- wm831x->irq_base = pdata->irq_base;
+ domain = irq_domain_add_linear(wm831x->dev->of_node,
+ ARRAY_SIZE(wm831x_irqs),
+ &wm831x_irq_domain_ops,
+ wm831x);
- wm831x->irq_base = irq_alloc_descs(wm831x->irq_base, 0,
- WM831X_NUM_IRQS, 0);
- if (wm831x->irq_base < 0) {
- dev_warn(wm831x->dev, "Failed to allocate IRQs: %d\n",
- wm831x->irq_base);
- wm831x->irq_base = 0;
- return 0;
+ if (!domain) {
+ dev_warn(wm831x->dev, "Failed to allocate IRQ domain\n");
+ return -EINVAL;
}
if (pdata && pdata->irq_cmos)
@@ -566,24 +610,7 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq)
WM831X_IRQ_OD, i);
wm831x->irq = irq;
-
- /* Register them with genirq */
- for (cur_irq = wm831x->irq_base;
- cur_irq < ARRAY_SIZE(wm831x_irqs) + wm831x->irq_base;
- cur_irq++) {
- irq_set_chip_data(cur_irq, wm831x);
- irq_set_chip_and_handler(cur_irq, &wm831x_irq_chip,
- handle_edge_irq);
- irq_set_nested_thread(cur_irq, 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(cur_irq, IRQF_VALID);
-#else
- irq_set_noprobe(cur_irq);
-#endif
- }
+ wm831x->irq_domain = domain;
if (irq) {
/* Try to flag /IRQ as a wake source; there are a number of
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 17:12:37 +0100