diff options
Diffstat (limited to 'recipes-kernel/linux/linux-handheld-4.0/tosa/0002-tosa-bl-correct-backlight-calculations.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-handheld-4.0/tosa/0002-tosa-bl-correct-backlight-calculations.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-handheld-4.0/tosa/0002-tosa-bl-correct-backlight-calculations.patch b/recipes-kernel/linux/linux-handheld-4.0/tosa/0002-tosa-bl-correct-backlight-calculations.patch new file mode 100644 index 0000000..a78b353 --- /dev/null +++ b/recipes-kernel/linux/linux-handheld-4.0/tosa/0002-tosa-bl-correct-backlight-calculations.patch @@ -0,0 +1,39 @@ +From 0e7ecb12cdc3e89242738a525c8f6c6419fb976e Mon Sep 17 00:00:00 2001 +From: Dmitry Eremin-Solenikov <dmitry_eremin@mentor.com> +Date: Wed, 9 Oct 2013 05:49:57 +0400 +Subject: [PATCH 2/7] tosa-bl: correct backlight calculations + +To behave like old (Sharp) kernels enable 20mA drain when backlight is +enabled. Accordingly limit max_backlight to 255 (8-bit value). +Rebased for 3.14 + +Signed-off-by: Dmitry Eremin-Solenikov <dmitry_eremin@mentor.com> +--- + drivers/video/backlight/tosa_bl.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/drivers/video/backlight/tosa_bl.c b/drivers/video/backlight/tosa_bl.c +index 3ad6765..0caae3a 100644 +--- a/drivers/video/backlight/tosa_bl.c ++++ b/drivers/video/backlight/tosa_bl.c +@@ -46,7 +46,7 @@ static void tosa_bl_set_backlight(struct tosa_bl_data *data, int brightness) + i2c_smbus_write_byte_data(data->i2c, DAC_CH2, (u8)(brightness & 0xff)); + + /* SetBacklightVR */ +- gpio_set_value(TOSA_GPIO_BL_C20MA, brightness & 0x100); ++ gpio_set_value(TOSA_GPIO_BL_C20MA, !!brightness); + + tosa_bl_enable(spi, brightness); + } +@@ -104,7 +104,7 @@ static int tosa_bl_probe(struct i2c_client *client, + + memset(&props, 0, sizeof(struct backlight_properties)); + props.type = BACKLIGHT_RAW; +- props.max_brightness = 512 - 1; ++ props.max_brightness = 255; + data->bl = devm_backlight_device_register(&client->dev, "tosa-bl", + &client->dev, data, &bl_ops, + &props); +-- +1.8.5.2 + |