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From:   Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
To:     broonie@kernel.org
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Subject: [PATCH 10/49] regmap-irq: Remove virtual registers support
Date:   Mon, 20 Jun 2022 21:06:05 +0100
Message-Id: <20220620200644.1961936-11-aidanmacdonald.0x0@gmail.com>
In-Reply-To: <20220620200644.1961936-1-aidanmacdonald.0x0@gmail.com>
References: <20220620200644.1961936-1-aidanmacdonald.0x0@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Virtual registers can be removed, since config registers implement
the same functionality.

Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@gmail.com>
---
 drivers/base/regmap/regmap-irq.c | 42 --------------------------------
 include/linux/regmap.h           |  9 -------
 2 files changed, 51 deletions(-)

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index be35f2e41b8c..5a3e255816fd 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -38,7 +38,6 @@ struct regmap_irq_chip_data {
 	unsigned int *wake_buf;
 	unsigned int *type_buf;
 	unsigned int *type_buf_def;
-	unsigned int **virt_buf;
 	unsigned int **config_buf;
 
 	unsigned int irq_reg_stride;
@@ -218,20 +217,6 @@ static void regmap_irq_sync_unlock(struct irq_data *data)
 		}
 	}
 
-	if (d->chip->num_virt_regs) {
-		for (i = 0; i < d->chip->num_virt_regs; i++) {
-			for (j = 0; j < d->chip->num_regs; j++) {
-				reg = sub_irq_reg(d, d->chip->virt_reg_base[i],
-						  j);
-				ret = regmap_write(map, reg, d->virt_buf[i][j]);
-				if (ret != 0)
-					dev_err(d->map->dev,
-						"Failed to write virt 0x%x: %d\n",
-						reg, ret);
-			}
-		}
-	}
-
 	for (i = 0; i < d->chip->num_config_bases; i++) {
 		for (j = 0; j < d->chip->num_config_regs; j++) {
 			reg = sub_irq_reg(d, d->chip->config_base[i], j);
@@ -346,10 +331,6 @@ static int regmap_irq_set_type(struct irq_data *data, unsigned int type)
 		return -EINVAL;
 	}
 
-	if (d->chip->set_type_virt)
-		return d->chip->set_type_virt(d->virt_buf, type, data->hwirq,
-					      reg);
-
 	return 0;
 }
 
@@ -782,24 +763,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 			goto err_alloc;
 	}
 
-	if (chip->num_virt_regs) {
-		/*
-		 * Create virt_buf[chip->num_extra_config_regs][chip->num_regs]
-		 */
-		d->virt_buf = kcalloc(chip->num_virt_regs, sizeof(*d->virt_buf),
-				      GFP_KERNEL);
-		if (!d->virt_buf)
-			goto err_alloc;
-
-		for (i = 0; i < chip->num_virt_regs; i++) {
-			d->virt_buf[i] = kcalloc(chip->num_regs,
-						 sizeof(unsigned int),
-						 GFP_KERNEL);
-			if (!d->virt_buf[i])
-				goto err_alloc;
-		}
-	}
-
 	if (chip->num_config_bases && chip->num_config_regs) {
 		/*
 		 * Create config_buf[num_config_bases][num_config_regs]
@@ -989,11 +952,6 @@ int regmap_add_irq_chip_fwnode(struct fwnode_handle *fwnode,
 	kfree(d->mask_buf);
 	kfree(d->status_buf);
 	kfree(d->status_reg_buf);
-	if (d->virt_buf) {
-		for (i = 0; i < chip->num_virt_regs; i++)
-			kfree(d->virt_buf[i]);
-		kfree(d->virt_buf);
-	}
 	if (d->config_buf) {
 		for (i = 0; i < chip->num_config_bases; i++)
 			kfree(d->config_buf[i]);
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index e48d65756fb4..bb8c89a83b51 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -1459,7 +1459,6 @@ struct regmap_irq_sub_irq_map {
  *               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.
  * @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.
@@ -1486,8 +1485,6 @@ struct regmap_irq_sub_irq_map {
  *               assigned based on the index in the array of the interrupt.
  * @num_irqs:    Number of descriptors.
  * @num_type_reg:    Number of type registers.
- * @num_virt_regs:   Number of non-standard irq configuration registers.
- *		     If zero unsupported.
  * @type_reg_stride: Stride to use for chips where type registers are not
  *			contiguous.
  * @num_config_bases:	Number of config base registers.
@@ -1496,8 +1493,6 @@ struct regmap_irq_sub_irq_map {
  *		     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.
  * @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.
@@ -1520,7 +1515,6 @@ struct regmap_irq_chip {
 	unsigned int ack_base;
 	unsigned int wake_base;
 	unsigned int type_base;
-	unsigned int *virt_reg_base;
 	const unsigned int *config_base;
 	unsigned int irq_reg_stride;
 	bool mask_writeonly:1;
@@ -1543,15 +1537,12 @@ struct regmap_irq_chip {
 	int num_irqs;
 
 	int num_type_reg;
-	int num_virt_regs;
 	int num_config_bases;
 	int num_config_regs;
 	unsigned int type_reg_stride;
 
 	int (*handle_pre_irq)(void *irq_drv_data);
 	int (*handle_post_irq)(void *irq_drv_data);
-	int (*set_type_virt)(unsigned int **buf, unsigned int type,
-			     unsigned long hwirq, int reg);
 	int (*set_type_config)(unsigned int **buf, unsigned int type,
 			       const struct regmap_irq *irq_data, int idx);
 	void *irq_drv_data;
-- 
2.35.1