regmap-irq: Deprecate type registers and virtual registers

Config registers can be used to replace both type and virtual
registers, so mark both features are deprecated and issue a
warning if they're used.

Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
Link: https://lore.kernel.org/r/20220623211420.918875-10-aidanmacdonald.0x0@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/base/regmap/regmap-irq.c

@@ -726,6 +726,12 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
  return -EINVAL;
  }
 
+ if (chip->num_type_reg)
+ dev_warn(map->dev, "type registers are deprecated; use config registers instead");
+
+ if (chip->num_virt_regs || chip->virt_reg_base || chip->set_type_virt)
+ dev_warn(map->dev, "virtual registers are deprecated; use config registers instead");
+
  if (irq_base) {
  irq_base = irq_alloc_descs(irq_base, 0, chip->num_irqs, 0);
  if (irq_base < 0) {

include/linux/regmap.h

@@ -1473,8 +1473,10 @@ struct regmap_irq_sub_irq_map {
  * @ack_base: Base ack address. If zero then the chip is clear on read.
  * Using zero value is possible with @use_ack bit.
  * @wake_base: Base address for wake enables. If zero unsupported.
- * @type_base: Base address for irq type. If zero unsupported.
- * @virt_reg_base: Base addresses for extra config regs.
+ * @type_base: Base address for irq type. If zero unsupported. Deprecated,
+ * use @config_base instead.
+ * @virt_reg_base: Base addresses for extra config regs. Deprecated, use
+ * @config_base instead.
  * @config_base: Base address for IRQ type config regs. If null unsupported.
  * @irq_reg_stride: Stride to use for chips where registers are not contiguous.
  * @init_ack_masked: Ack all masked interrupts once during initalization.
@@ -1483,7 +1485,8 @@ struct regmap_irq_sub_irq_map {
  * @ack_invert: Inverted ack register: cleared bits for ack.
  * @clear_ack: Use this to set 1 and 0 or vice-versa to clear interrupts.
  * @wake_invert: Inverted wake register: cleared bits are wake enabled.
- * @type_invert: Invert the type flags.
+ * @type_invert: Invert the type flags. Deprecated, use config registers
+ * instead.
  * @type_in_mask: Use the mask registers for controlling irq type. Use this if
  * the hardware provides separate bits for rising/falling edge
  * or low/high level interrupts and they should be combined into
@@ -1502,17 +1505,20 @@ struct regmap_irq_sub_irq_map {
  * @irqs: Descriptors for individual IRQs. Interrupt numbers are
  * assigned based on the index in the array of the interrupt.
  * @num_irqs: Number of descriptors.
- * @num_type_reg: Number of type registers.
+ * @num_type_reg: Number of type registers. Deprecated, use config registers
+ * instead.
  * @num_virt_regs: Number of non-standard irq configuration registers.
- * If zero unsupported.
+ * If zero unsupported. Deprecated, use config registers
+ * instead.
  * @num_config_bases: Number of config base registers.
  * @num_config_regs: Number of config registers for each config base register.
  * @handle_pre_irq: Driver specific callback to handle interrupt from device
  * before regmap_irq_handler process the interrupts.
  * @handle_post_irq: Driver specific callback to handle interrupt from device
  * after handling the interrupts in regmap_irq_handler().
  * @set_type_virt: Driver specific callback to extend regmap_irq_set_type()
- * and configure virt regs.
+ * and configure virt regs. Deprecated, use @set_type_config
+ * callback and config registers instead.
  * @set_type_config: Callback used for configuring irq types.
  * @irq_drv_data: Driver specific IRQ data which is passed as parameter when
  * driver specific pre/post interrupt handler is called.