From: Chen-Yu Tsai <wens@kernel.org>
To: Javier Martinez Canillas <javierm@redhat.com>,
 Maxime Ripard <mripard@kernel.org>, Rob Herring <robh+dt@kernel.org>,
 Krzysztof Kozlowski <krzk+dt@kernel.org>, David Airlie <airlied@linux.ie>,
 Daniel Vetter <daniel@ffwll.ch>
Subject: [PATCH 4/4] drm: ssd130x: Add support for SINO WEALTH SH1106
Date: Thu, 31 Mar 2022 03:08:46 +0800
Message-Id: <20220330190846.13997-5-wens@kernel.org>
In-Reply-To: <20220330190846.13997-1-wens@kernel.org>
References: <20220330190846.13997-1-wens@kernel.org>
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Cc: devicetree@vger.kernel.org, Chen-Yu Tsai <wens@csie.org>,
 linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
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From: Chen-Yu Tsai <wens@csie.org>

The SINO WEALTH SH1106 is an OLED display driver that is somewhat
compatible with the SSD1306. It supports a slightly wider display,
at 132 instead of 128 pixels. The basic commands are the same, but
the SH1106 doesn't support the horizontal or vertical address modes.

Add support for this display driver. The default values for some of
the hardware settings are taken from the datasheet.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 drivers/gpu/drm/solomon/ssd130x-i2c.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/solomon/ssd130x-i2c.c b/drivers/gpu/drm/solomon/ssd130x-i2c.c
index 3126aeda4ced..d099b241dd3f 100644
--- a/drivers/gpu/drm/solomon/ssd130x-i2c.c
+++ b/drivers/gpu/drm/solomon/ssd130x-i2c.c
@@ -53,6 +53,13 @@ static void ssd130x_i2c_shutdown(struct i2c_client *client)
 	ssd130x_shutdown(ssd130x);
 }
 
+static struct ssd130x_deviceinfo ssd130x_sh1106_deviceinfo = {
+	.default_vcomh = 0x40,
+	.default_dclk_div = 1,
+	.default_dclk_frq = 5,
+	.page_mode_only = 1,
+};
+
 static struct ssd130x_deviceinfo ssd130x_ssd1305_deviceinfo = {
 	.default_vcomh = 0x34,
 	.default_dclk_div = 1,
@@ -80,6 +87,10 @@ static struct ssd130x_deviceinfo ssd130x_ssd1309_deviceinfo = {
 };
 
 static const struct of_device_id ssd130x_of_match[] = {
+	{
+		.compatible = "sinowealth,sh1106-i2c",
+		.data = &ssd130x_sh1106_deviceinfo,
+	},
 	{
 		.compatible = "solomon,ssd1305fb-i2c",
 		.data = &ssd130x_ssd1305_deviceinfo,
-- 
2.34.1