From f1f288d07afb46517e377deb8d20f187f51b00b2 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 9 Jun 2023 19:09:36 +0200 Subject: [PATCH] drm/ssd130x: Make default width and height to be controller dependent Currently the driver hardcodes the default values to 96x16 pixels but this default resolution depends on the controller. The datasheets for the chips describes the following display controller resolutions: - SH1106: 132 x 64 Dot Matrix OLED/PLED - SSD1305: 132 x 64 Dot Matrix OLED/PLED - SSD1306: 128 x 64 Dot Matrix OLED/PLED - SSD1307: 128 x 39 Dot Matrix OLED/PLED - SSD1309: 128 x 64 Dot Matrix OLED/PLED Add this information to the devices' info structures, and use it set as a default if not defined in DT rather than hardcoding to an arbitrary value. Signed-off-by: Javier Martinez Canillas Reviewed-by: Thomas Zimmermann Link: https://patchwork.freedesktop.org/patch/msgid/20230609170941.1150941-2-javierm@redhat.com --- drivers/gpu/drm/solomon/ssd130x.c | 14 ++++++++++++-- drivers/gpu/drm/solomon/ssd130x.h | 2 ++ 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c index 8cbf5aa..a0e5e26 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -99,29 +99,39 @@ const struct ssd130x_deviceinfo ssd130x_variants[] = { .default_vcomh = 0x40, .default_dclk_div = 1, .default_dclk_frq = 5, + .default_width = 132, + .default_height = 64, .page_mode_only = 1, }, [SSD1305_ID] = { .default_vcomh = 0x34, .default_dclk_div = 1, .default_dclk_frq = 7, + .default_width = 132, + .default_height = 64, }, [SSD1306_ID] = { .default_vcomh = 0x20, .default_dclk_div = 1, .default_dclk_frq = 8, .need_chargepump = 1, + .default_width = 128, + .default_height = 64, }, [SSD1307_ID] = { .default_vcomh = 0x20, .default_dclk_div = 2, .default_dclk_frq = 12, .need_pwm = 1, + .default_width = 128, + .default_height = 39, }, [SSD1309_ID] = { .default_vcomh = 0x34, .default_dclk_div = 1, .default_dclk_frq = 10, + .default_width = 128, + .default_height = 64, } }; EXPORT_SYMBOL_NS_GPL(ssd130x_variants, DRM_SSD130X); @@ -798,10 +808,10 @@ static void ssd130x_parse_properties(struct ssd130x_device *ssd130x) struct device *dev = ssd130x->dev; if (device_property_read_u32(dev, "solomon,width", &ssd130x->width)) - ssd130x->width = 96; + ssd130x->width = ssd130x->device_info->default_width; if (device_property_read_u32(dev, "solomon,height", &ssd130x->height)) - ssd130x->height = 16; + ssd130x->height = ssd130x->device_info->default_height; if (device_property_read_u32(dev, "solomon,page-offset", &ssd130x->page_offset)) ssd130x->page_offset = 1; diff --git a/drivers/gpu/drm/solomon/ssd130x.h b/drivers/gpu/drm/solomon/ssd130x.h index db03ee5d..a2bc8d7 100644 --- a/drivers/gpu/drm/solomon/ssd130x.h +++ b/drivers/gpu/drm/solomon/ssd130x.h @@ -37,6 +37,8 @@ struct ssd130x_deviceinfo { u32 default_vcomh; u32 default_dclk_div; u32 default_dclk_frq; + u32 default_width; + u32 default_height; int need_pwm; int need_chargepump; bool page_mode_only; -- 2.7.4