platform-drivers: x86: pmic: Restore the dropped buslock/unlock

When I added the buslock/unlock mechanism to the pmic code in order to
get rid of the horrible work queue stuff, stupid me missed to add the
new callbacks to the irq_chip.

In consequence Andrew removed the unused functions, but I missed that.

Add them back and hook them up proper.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

1 files changed, 39 insertions, 4 deletions

diff --git a/drivers/platform/x86/intel_pmic_gpio.c b/drivers/platform/x86/intel_pmic_gpio.c
index d653104b59c..7bbb5388e56 100644
--- a/drivers/platform/x86/intel_pmic_gpio.c
+++ b/drivers/platform/x86/intel_pmic_gpio.c
@@ -74,6 +74,19 @@ struct pmic_gpio {
         u32                     trigger_type;
 };
 
+static void pmic_program_irqtype(int gpio, int type)
+{
+        if (type & IRQ_TYPE_EDGE_RISING)
+                intel_scu_ipc_update_register(GPIO0 + gpio, 0x20, 0x20);
+        else
+                intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x20);
+
+        if (type & IRQ_TYPE_EDGE_FALLING)
+                intel_scu_ipc_update_register(GPIO0 + gpio, 0x10, 0x10);
+        else
+                intel_scu_ipc_update_register(GPIO0 + gpio, 0x00, 0x10);
+};
+
 static int pmic_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
 {
         if (offset > 8) {
@@ -166,16 +179,38 @@ static int pmic_gpio_to_irq(struct gpio_chip *chip, unsigned offset)
         return pg->irq_base + offset;
 }
 
+static void pmic_bus_lock(struct irq_data *data)
+{
+        struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+
+        mutex_lock(&pg->buslock);
+}
+
+static void pmic_bus_sync_unlock(struct irq_data *data)
+{
+        struct pmic_gpio *pg = irq_data_get_irq_chip_data(data);
+
+        if (pg->update_type) {
+                unsigned int gpio = pg->update_type & ~GPIO_UPDATE_TYPE;
+
+                pmic_program_irqtype(gpio, pg->trigger_type);
+                pg->update_type = 0;
+        }
+        mutex_unlock(&pg->buslock);
+}
+
 /* the gpiointr register is read-clear, so just do nothing. */
 static void pmic_irq_unmask(struct irq_data *data) { }
 
 static void pmic_irq_mask(struct irq_data *data) { }
 
 static struct irq_chip pmic_irqchip = {
-        .name           = "PMIC-GPIO",
-        .irq_mask       = pmic_irq_mask,
-        .irq_unmask     = pmic_irq_unmask,
-        .irq_set_type   = pmic_irq_type,
+        .name                   = "PMIC-GPIO",
+        .irq_mask               = pmic_irq_mask,
+        .irq_unmask             = pmic_irq_unmask,
+        .irq_set_type           = pmic_irq_type,
+        .irq_bus_lock           = pmic_irq_buslock,
+        .irq_bus_sync_unlock    = pmic_bus_sync_unlock,
 };
 
 static irqreturn_t pmic_irq_handler(int irq, void *data)