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Message-Id: <20210727140459.3767788-17-geert@linux-m68k.org>
Date: Tue, 27 Jul 2021 16:04:56 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Robin van der Gracht <robin@...tonic.nl>,
Rob Herring <robh+dt@...nel.org>,
Miguel Ojeda <ojeda@...nel.org>,
Paul Burton <paulburton@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Pavel Machek <pavel@....cz>, Marek Behun <marek.behun@....cz>
Cc: devicetree@...r.kernel.org, linux-leds@...r.kernel.org,
linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: [PATCH v4 16/19] auxdisplay: ht16k33: Extract frame buffer probing
Extract all frame buffer (including backlight) probing into
ht16k33_fbdev_probe().
Call ht16k33_fbdev_probe() after ht16k33_keypad_probe(), as the latter
does not need any manual cleanup in the probe error path.
Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
v4:
- No changes,
v3:
- Pass "dev" instead of "client" to ht16k33_fbdev_probe(),
- Drop local variable "node",
v2:
- Rebased.
---
drivers/auxdisplay/ht16k33.c | 101 ++++++++++++++++++-----------------
1 file changed, 53 insertions(+), 48 deletions(-)
diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index 928ac9722c142855..27ac167dae74bd82 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -394,33 +394,13 @@ static int ht16k33_keypad_probe(struct i2c_client *client,
return input_register_device(keypad->dev);
}
-static int ht16k33_probe(struct i2c_client *client)
+static int ht16k33_fbdev_probe(struct device *dev, struct ht16k33_priv *priv,
+ uint32_t brightness)
{
- int err;
- uint32_t dft_brightness;
- struct backlight_device *bl;
+ struct ht16k33_fbdev *fbdev = &priv->fbdev;
struct backlight_properties bl_props;
- struct ht16k33_priv *priv;
- struct ht16k33_fbdev *fbdev;
- struct device *dev = &client->dev;
- struct device_node *node = dev->of_node;
-
- if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
- dev_err(dev, "i2c_check_functionality error\n");
- return -EIO;
- }
-
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->client = client;
- i2c_set_clientdata(client, priv);
- fbdev = &priv->fbdev;
-
- err = ht16k33_initialize(priv);
- if (err)
- return err;
+ struct backlight_device *bl;
+ int err;
/* Backlight */
memset(&bl_props, 0, sizeof(struct backlight_properties));
@@ -434,18 +414,7 @@ static int ht16k33_probe(struct i2c_client *client)
return PTR_ERR(bl);
}
- err = of_property_read_u32(node, "default-brightness-level",
- &dft_brightness);
- if (err) {
- dft_brightness = MAX_BRIGHTNESS;
- } else if (dft_brightness > MAX_BRIGHTNESS) {
- dev_warn(dev,
- "invalid default brightness level: %u, using %u\n",
- dft_brightness, MAX_BRIGHTNESS);
- dft_brightness = MAX_BRIGHTNESS;
- }
-
- bl->props.brightness = dft_brightness;
+ bl->props.brightness = brightness;
ht16k33_bl_update_status(bl);
/* Framebuffer (2 bytes per column) */
@@ -466,8 +435,8 @@ static int ht16k33_probe(struct i2c_client *client)
goto err_fbdev_buffer;
}
- err = of_property_read_u32(node, "refresh-rate-hz",
- &fbdev->refresh_rate);
+ err = of_property_read_u32(dev->of_node, "refresh-rate-hz",
+ &fbdev->refresh_rate);
if (err) {
dev_err(dev, "refresh rate not specified\n");
goto err_fbdev_info;
@@ -489,18 +458,9 @@ static int ht16k33_probe(struct i2c_client *client)
if (err)
goto err_fbdev_info;
- /* Keypad */
- if (client->irq > 0) {
- err = ht16k33_keypad_probe(client, &priv->keypad);
- if (err)
- goto err_fbdev_unregister;
- }
-
ht16k33_fb_queue(priv);
return 0;
-err_fbdev_unregister:
- unregister_framebuffer(fbdev->info);
err_fbdev_info:
framebuffer_release(fbdev->info);
err_fbdev_buffer:
@@ -509,6 +469,51 @@ static int ht16k33_probe(struct i2c_client *client)
return err;
}
+static int ht16k33_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct ht16k33_priv *priv;
+ uint32_t dft_brightness;
+ int err;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(dev, "i2c_check_functionality error\n");
+ return -EIO;
+ }
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->client = client;
+ i2c_set_clientdata(client, priv);
+
+ err = ht16k33_initialize(priv);
+ if (err)
+ return err;
+
+ err = of_property_read_u32(dev->of_node, "default-brightness-level",
+ &dft_brightness);
+ if (err) {
+ dft_brightness = MAX_BRIGHTNESS;
+ } else if (dft_brightness > MAX_BRIGHTNESS) {
+ dev_warn(dev,
+ "invalid default brightness level: %u, using %u\n",
+ dft_brightness, MAX_BRIGHTNESS);
+ dft_brightness = MAX_BRIGHTNESS;
+ }
+
+ /* Keypad */
+ if (client->irq > 0) {
+ err = ht16k33_keypad_probe(client, &priv->keypad);
+ if (err)
+ return err;
+ }
+
+ /* Frame Buffer Display */
+ return ht16k33_fbdev_probe(dev, priv, dft_brightness);
+}
+
static int ht16k33_remove(struct i2c_client *client)
{
struct ht16k33_priv *priv = i2c_get_clientdata(client);
--
2.25.1
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