From fcbb3c356eae05812fcefc8eda8f49034dbbb8ed Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 19 Oct 2021 16:45:16 +0200 Subject: 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 Reviewed-by: Robin van der Gracht Signed-off-by: Miguel Ojeda --- drivers/auxdisplay/ht16k33.c | 101 +++++++++++++++++++++++-------------------- 1 file changed, 53 insertions(+), 48 deletions(-) (limited to 'drivers/auxdisplay') diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c index 60e616c0e932..8993d2790910 100644 --- a/drivers/auxdisplay/ht16k33.c +++ b/drivers/auxdisplay/ht16k33.c @@ -404,33 +404,13 @@ 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)); @@ -444,18 +424,7 @@ 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) */ @@ -476,8 +445,8 @@ 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; @@ -499,18 +468,9 @@ 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: @@ -519,6 +479,51 @@ err_fbdev_buffer: 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); -- cgit v1.2.3-59-g8ed1b