linux-kernel - [PATCH v1] staging: fbtft: fb

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Message-Id: <1586424250-25897-1-git-send-email-oliver.graute@gmail.com>
Date:   Thu,  9 Apr 2020 11:24:05 +0200
From:   Oliver Graute <oliver.graute@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     oliver.graute@...il.com,
        Oliver Graute <oliver.graute@...oconnector.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] staging: fbtft: fb_st7789v: enabled inversion

From: Oliver Graute <oliver.graute@...oconnector.com>

Enable inversion mode

Signed-off-by: Oliver Graute <oliver.graute@...oconnector.com>
---
 drivers/staging/fbtft/fb_st7789v.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/staging/fbtft/fb_st7789v.c b/drivers/staging/fbtft/fb_st7789v.c
index 3c3f387936e8..84c5af2dc9a0 100644
--- a/drivers/staging/fbtft/fb_st7789v.c
+++ b/drivers/staging/fbtft/fb_st7789v.c
@@ -120,6 +120,10 @@ static int init_display(struct fbtft_par *par)
 	write_reg(par, PWCTRL1, 0xA4, 0xA1);
 
 	write_reg(par, MIPI_DCS_SET_DISPLAY_ON);
+
+	/* enable inversion mode */
+	write_reg(par, 0x21);
+
 	return 0;
 }
 
-- 
2.17.1