fbdev: ssd1307fb: Fix charge pump setting

Make sure bit 4 is set for the charge pump setting. It is required according
to SSD1306 App Note.

Signed-off-by: Julian Scheel <julian@jusst.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index fa34808..21dafe5 100644 (file)
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -389,7 +389,7 @@ static int ssd1307fb_init(struct ssd1307fb_par *par)
                return ret;
 
        ret = ssd1307fb_write_cmd(par->client,
-               (par->device_info->need_chargepump & 0x1 << 2) & 0x14);
+               BIT(4) | (par->device_info->need_chargepump ? BIT(2) : 0));
        if (ret < 0)
                return ret;