1 files changed, 68 insertions, 106 deletions

diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index a90430b7d07b..96acfb2b58cd 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -15,6 +15,7 @@
 #include <linux/property.h>
 #include <linux/fb.h>
 #include <linux/backlight.h>
+#include <linux/container_of.h>
 #include <linux/input.h>
 #include <linux/input/matrix_keypad.h>
 #include <linux/leds.h>
@@ -85,16 +86,6 @@ struct ht16k33_fbdev {
 	uint8_t *cache;
 };
 
-struct ht16k33_seg {
-	struct linedisp linedisp;
-	union {
-		struct seg7_conversion_map seg7;
-		struct seg14_conversion_map seg14;
-	} map;
-	unsigned int map_size;
-	char curr[4];
-};
-
 struct ht16k33_priv {
 	struct i2c_client *client;
 	struct delayed_work work;
@@ -102,12 +93,21 @@ struct ht16k33_priv {
 	struct ht16k33_keypad keypad;
 	union {
 		struct ht16k33_fbdev fbdev;
-		struct ht16k33_seg seg;
+		struct linedisp linedisp;
 	};
 	enum display_type type;
 	uint8_t blink;
 };
 
+#define ht16k33_work_to_priv(p)				\
+	container_of(p, struct ht16k33_priv, work.work)
+
+#define ht16k33_led_to_priv(p)				\
+	container_of(p, struct ht16k33_priv, led)
+
+#define ht16k33_linedisp_to_priv(p)			\
+	container_of(p, struct ht16k33_priv, linedisp)
+
 static const struct fb_fix_screeninfo ht16k33_fb_fix = {
 	.id		= DRIVER_NAME,
 	.type		= FB_TYPE_PACKED_PIXELS,
@@ -135,33 +135,6 @@ static const struct fb_var_screeninfo ht16k33_fb_var = {
 	.vmode = FB_VMODE_NONINTERLACED,
 };
 
-static const SEG7_DEFAULT_MAP(initial_map_seg7);
-static const SEG14_DEFAULT_MAP(initial_map_seg14);
-
-static ssize_t map_seg_show(struct device *dev, struct device_attribute *attr,
-			    char *buf)
-{
-	struct ht16k33_priv *priv = dev_get_drvdata(dev);
-
-	memcpy(buf, &priv->seg.map, priv->seg.map_size);
-	return priv->seg.map_size;
-}
-
-static ssize_t map_seg_store(struct device *dev, struct device_attribute *attr,
-			     const char *buf, size_t cnt)
-{
-	struct ht16k33_priv *priv = dev_get_drvdata(dev);
-
-	if (cnt != priv->seg.map_size)
-		return -EINVAL;
-
-	memcpy(&priv->seg.map, buf, cnt);
-	return cnt;
-}
-
-static DEVICE_ATTR(map_seg7, 0644, map_seg_show, map_seg_store);
-static DEVICE_ATTR(map_seg14, 0644, map_seg_show, map_seg_store);
-
 static int ht16k33_display_on(struct ht16k33_priv *priv)
 {
 	uint8_t data = REG_DISPLAY_SETUP | REG_DISPLAY_SETUP_ON | priv->blink;
@@ -195,8 +168,7 @@ static int ht16k33_brightness_set(struct ht16k33_priv *priv,
 static int ht16k33_brightness_set_blocking(struct led_classdev *led_cdev,
 					   enum led_brightness brightness)
 {
-	struct ht16k33_priv *priv = container_of(led_cdev, struct ht16k33_priv,
-						 led);
+	struct ht16k33_priv *priv = ht16k33_led_to_priv(led_cdev);
 
 	return ht16k33_brightness_set(priv, brightness);
 }
@@ -204,8 +176,7 @@ static int ht16k33_brightness_set_blocking(struct led_classdev *led_cdev,
 static int ht16k33_blink_set(struct led_classdev *led_cdev,
 			     unsigned long *delay_on, unsigned long *delay_off)
 {
-	struct ht16k33_priv *priv = container_of(led_cdev, struct ht16k33_priv,
-						 led);
+	struct ht16k33_priv *priv = ht16k33_led_to_priv(led_cdev);
 	unsigned int delay;
 	uint8_t blink;
 	int err;
@@ -247,8 +218,7 @@ static void ht16k33_fb_queue(struct ht16k33_priv *priv)
  */
 static void ht16k33_fb_update(struct work_struct *work)
 {
-	struct ht16k33_priv *priv = container_of(work, struct ht16k33_priv,
-						 work.work);
+	struct ht16k33_priv *priv = ht16k33_work_to_priv(work);
 	struct ht16k33_fbdev *fbdev = &priv->fbdev;
 
 	uint8_t *p1, *p2;
@@ -440,51 +410,71 @@ static void ht16k33_keypad_stop(struct input_dev *dev)
 	disable_irq(keypad->client->irq);
 }
 
-static void ht16k33_linedisp_update(struct linedisp *linedisp)
-{
-	struct ht16k33_priv *priv = container_of(linedisp, struct ht16k33_priv,
-						 seg.linedisp);
-
-	schedule_delayed_work(&priv->work, 0);
-}
-
 static void ht16k33_seg7_update(struct work_struct *work)
 {
-	struct ht16k33_priv *priv = container_of(work, struct ht16k33_priv,
-						 work.work);
-	struct ht16k33_seg *seg = &priv->seg;
-	char *s = seg->curr;
+	struct ht16k33_priv *priv = ht16k33_work_to_priv(work);
+	struct linedisp_map *map = priv->linedisp.map;
+	char *s = priv->linedisp.buf;
 	uint8_t buf[9];
 
-	buf[0] = map_to_seg7(&seg->map.seg7, *s++);
+	buf[0] = map_to_seg7(&map->map.seg7, *s++);
 	buf[1] = 0;
-	buf[2] = map_to_seg7(&seg->map.seg7, *s++);
+	buf[2] = map_to_seg7(&map->map.seg7, *s++);
 	buf[3] = 0;
 	buf[4] = 0;
 	buf[5] = 0;
-	buf[6] = map_to_seg7(&seg->map.seg7, *s++);
+	buf[6] = map_to_seg7(&map->map.seg7, *s++);
 	buf[7] = 0;
-	buf[8] = map_to_seg7(&seg->map.seg7, *s++);
+	buf[8] = map_to_seg7(&map->map.seg7, *s++);
 
 	i2c_smbus_write_i2c_block_data(priv->client, 0, ARRAY_SIZE(buf), buf);
 }
 
 static void ht16k33_seg14_update(struct work_struct *work)
 {
-	struct ht16k33_priv *priv = container_of(work, struct ht16k33_priv,
-						 work.work);
-	struct ht16k33_seg *seg = &priv->seg;
-	char *s = seg->curr;
+	struct ht16k33_priv *priv = ht16k33_work_to_priv(work);
+	struct linedisp_map *map = priv->linedisp.map;
+	char *s = priv->linedisp.buf;
 	uint8_t buf[8];
 
-	put_unaligned_le16(map_to_seg14(&seg->map.seg14, *s++), buf);
-	put_unaligned_le16(map_to_seg14(&seg->map.seg14, *s++), buf + 2);
-	put_unaligned_le16(map_to_seg14(&seg->map.seg14, *s++), buf + 4);
-	put_unaligned_le16(map_to_seg14(&seg->map.seg14, *s++), buf + 6);
+	put_unaligned_le16(map_to_seg14(&map->map.seg14, *s++), buf + 0);
+	put_unaligned_le16(map_to_seg14(&map->map.seg14, *s++), buf + 2);
+	put_unaligned_le16(map_to_seg14(&map->map.seg14, *s++), buf + 4);
+	put_unaligned_le16(map_to_seg14(&map->map.seg14, *s++), buf + 6);
 
 	i2c_smbus_write_i2c_block_data(priv->client, 0, ARRAY_SIZE(buf), buf);
 }
 
+static int ht16k33_linedisp_get_map_type(struct linedisp *linedisp)
+{
+	struct ht16k33_priv *priv = ht16k33_linedisp_to_priv(linedisp);
+
+	switch (priv->type) {
+	case DISP_QUAD_7SEG:
+		INIT_DELAYED_WORK(&priv->work, ht16k33_seg7_update);
+		return LINEDISP_MAP_SEG7;
+
+	case DISP_QUAD_14SEG:
+		INIT_DELAYED_WORK(&priv->work, ht16k33_seg14_update);
+		return LINEDISP_MAP_SEG14;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static void ht16k33_linedisp_update(struct linedisp *linedisp)
+{
+	struct ht16k33_priv *priv = ht16k33_linedisp_to_priv(linedisp);
+
+	schedule_delayed_work(&priv->work, 0);
+}
+
+static const struct linedisp_ops ht16k33_linedisp_ops = {
+	.get_map_type = ht16k33_linedisp_get_map_type,
+	.update = ht16k33_linedisp_update,
+};
+
 static int ht16k33_led_probe(struct device *dev, struct led_classdev *led,
 			     unsigned int brightness)
 {
@@ -666,47 +656,14 @@ err_fbdev_buffer:
 static int ht16k33_seg_probe(struct device *dev, struct ht16k33_priv *priv,
 			     uint32_t brightness)
 {
-	struct ht16k33_seg *seg = &priv->seg;
+	struct linedisp *linedisp = &priv->linedisp;
 	int err;
 
 	err = ht16k33_brightness_set(priv, brightness);
 	if (err)
 		return err;
 
-	switch (priv->type) {
-	case DISP_MATRIX:
-		/* not handled here */
-		err = -EINVAL;
-		break;
-
-	case DISP_QUAD_7SEG:
-		INIT_DELAYED_WORK(&priv->work, ht16k33_seg7_update);
-		seg->map.seg7 = initial_map_seg7;
-		seg->map_size = sizeof(seg->map.seg7);
-		err = device_create_file(dev, &dev_attr_map_seg7);
-		break;
-
-	case DISP_QUAD_14SEG:
-		INIT_DELAYED_WORK(&priv->work, ht16k33_seg14_update);
-		seg->map.seg14 = initial_map_seg14;
-		seg->map_size = sizeof(seg->map.seg14);
-		err = device_create_file(dev, &dev_attr_map_seg14);
-		break;
-	}
-	if (err)
-		return err;
-
-	err = linedisp_register(&seg->linedisp, dev, 4, seg->curr,
-				ht16k33_linedisp_update);
-	if (err)
-		goto err_remove_map_file;
-
-	return 0;
-
-err_remove_map_file:
-	device_remove_file(dev, &dev_attr_map_seg7);
-	device_remove_file(dev, &dev_attr_map_seg14);
-	return err;
+	return linedisp_register(linedisp, dev, 4, &ht16k33_linedisp_ops);
 }
 
 static int ht16k33_probe(struct i2c_client *client)
@@ -770,6 +727,9 @@ static int ht16k33_probe(struct i2c_client *client)
 		/* Segment Display */
 		err = ht16k33_seg_probe(dev, priv, dft_brightness);
 		break;
+
+	default:
+		return -EINVAL;
 	}
 	return err;
 }
@@ -790,9 +750,10 @@ static void ht16k33_remove(struct i2c_client *client)
 
 	case DISP_QUAD_7SEG:
 	case DISP_QUAD_14SEG:
-		linedisp_unregister(&priv->seg.linedisp);
-		device_remove_file(&client->dev, &dev_attr_map_seg7);
-		device_remove_file(&client->dev, &dev_attr_map_seg14);
+		linedisp_unregister(&priv->linedisp);
+		break;
+
+	default:
 		break;
 	}
 }
@@ -831,4 +792,5 @@ module_i2c_driver(ht16k33_driver);
 
 MODULE_DESCRIPTION("Holtek HT16K33 driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(LINEDISP);
 MODULE_AUTHOR("Robin van der Gracht <robin@protonic.nl>");