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Message-ID: <20240212170423.2860895-13-andriy.shevchenko@linux.intel.com>
Date: Mon, 12 Feb 2024 19:01:45 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andy@...nel.org>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Robin van der Gracht <robin@...tonic.nl>,
Paul Burton <paulburton@...nel.org>
Subject: [PATCH v2 12/15] auxdisplay: ht16k33: Switch to use line display character mapping
Since line display library supports necessary bits to map the characters
(if required), switch this driver to use that.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
drivers/auxdisplay/ht16k33.c | 109 +++++++++++------------------------
1 file changed, 34 insertions(+), 75 deletions(-)
diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index 75c4a8d31642..b104f08252dd 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -87,11 +87,6 @@ struct ht16k33_fbdev {
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];
};
@@ -135,33 +130,6 @@ 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;
@@ -445,18 +413,20 @@ 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;
+ struct linedisp *linedisp = &seg->linedisp;
+ struct linedisp_map *map = linedisp->map;
char *s = seg->curr;
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);
}
@@ -466,17 +436,39 @@ 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;
+ struct linedisp *linedisp = &seg->linedisp;
+ struct linedisp_map *map = linedisp->map;
char *s = seg->curr;
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 = container_of(linedisp, struct ht16k33_priv,
+ seg.linedisp);
+
+ switch (priv->type) {
+ case DISP_MATRIX:
+ /* not handled here */
+ return -EINVAL;
+
+ 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;
+ }
+}
+
static void ht16k33_linedisp_update(struct linedisp *linedisp)
{
struct ht16k33_priv *priv = container_of(linedisp, struct ht16k33_priv,
@@ -486,6 +478,7 @@ static void ht16k33_linedisp_update(struct linedisp *linedisp)
}
static const struct linedisp_ops ht16k33_linedisp_ops = {
+ .get_map_type = ht16k33_linedisp_get_map_type,
.update = ht16k33_linedisp_update,
};
@@ -677,39 +670,7 @@ static int ht16k33_seg_probe(struct device *dev, struct ht16k33_priv *priv,
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_ops);
- 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(&seg->linedisp, dev, 4, seg->curr, &ht16k33_linedisp_ops);
}
static int ht16k33_probe(struct i2c_client *client)
@@ -794,8 +755,6 @@ 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);
break;
}
}
--
2.43.0.rc1.1.gbec44491f096
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