From: Robert Chiras <robert.chiras@nxp.com>
To: Daniel Vetter <daniel.vetter@ffwll.ch>,
Philipp Zabel <p.zabel@pengutronix.de>,
Marek Vasut <marex@denx.de>
Cc: Robert Chiras <robert.chiras@nxp.com>,
Stefan Agner <stefan@agner.ch>, Shawn Guo <shawnguo@kernel.org>,
Fabio Estevam <fabio.estevam@nxp.com>,
David Airlie <airlied@linux.ie>,
Anson Huang <anson.huang@nxp.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
dl-linux-imx <linux-imx@nxp.com>,
"kernel@pengutronix.de" <kernel@pengutronix.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH 03/10] drm/mxsfb: Add max-res property for MXSFB
Date: Wed, 9 Jan 2019 14:13:42 +0000 [thread overview]
Message-ID: <1547043209-8283-4-git-send-email-robert.chiras@nxp.com> (raw)
In-Reply-To: <1547043209-8283-1-git-send-email-robert.chiras@nxp.com>
Because of stability issues, we may want to limit the maximum resolution
supported by the MXSFB (eLCDIF) driver.
This patch add support for a new property which we can use to impose such
limitation.
Signed-off-by: Robert Chiras <robert.chiras@nxp.com>
---
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 9a73564..c0b6198 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -201,6 +201,7 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
struct platform_device *pdev = to_platform_device(drm->dev);
struct mxsfb_drm_private *mxsfb;
struct resource *res;
+ u32 max_res[2] = {0, 0};
int ret;
mxsfb = devm_kzalloc(&pdev->dev, sizeof(*mxsfb), GFP_KERNEL);
@@ -279,10 +280,17 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags)
}
}
+ of_property_read_u32_array(drm->dev->of_node, "max-res",
+ &max_res[0], 2);
+ if (!max_res[0])
+ max_res[0] = MXSFB_MAX_XRES;
+ if (!max_res[1])
+ max_res[1] = MXSFB_MAX_YRES;
+
drm->mode_config.min_width = MXSFB_MIN_XRES;
drm->mode_config.min_height = MXSFB_MIN_YRES;
- drm->mode_config.max_width = MXSFB_MAX_XRES;
- drm->mode_config.max_height = MXSFB_MAX_YRES;
+ drm->mode_config.max_width = max_res[0];
+ drm->mode_config.max_height = max_res[1];
drm->mode_config.funcs = &mxsfb_mode_config_funcs;
drm->mode_config.helper_private = &mxsfb_mode_config_helpers;
--
2.7.4
next prev parent reply other threads:[~2019-01-09 14:14 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-09 14:13 [PATCH 00/10] Add support for DRM bridge and additional pixel formats Robert Chiras
2019-01-09 14:13 ` [PATCH 01/10] drm/mxsfb: Update mxsfb to support a bridge Robert Chiras
2019-01-09 14:13 ` [PATCH 02/10] dt-bindings: display: Add max-res property for mxsfb Robert Chiras
2019-01-09 14:13 ` Robert Chiras [this message]
2019-01-09 14:13 ` [PATCH 04/10] drm/mxsfb: Update mxsfb with additional pixel formats Robert Chiras
2019-01-14 16:38 ` Guido Günther
2019-01-09 14:13 ` [PATCH 05/10] drm/mxsfb: Fix the vblank events Robert Chiras
2019-01-09 14:13 ` [PATCH 06/10] drm/mxsfb: Add support for new pixel formats in eLCDIF Robert Chiras
2019-01-09 14:13 ` [PATCH 07/10] drm/mxsfb: Signal mode changed when bpp changed Robert Chiras
2019-01-14 16:37 ` Guido Günther
2019-01-09 14:13 ` [PATCH 08/10] drm/mxsfb: Update mxsfb to support LCD reset Robert Chiras
2019-01-10 21:19 ` Fabio Estevam
2019-01-09 14:13 ` [PATCH 09/10] drm/mxsfb: Improve the axi clock usage Robert Chiras
2019-01-09 17:09 ` Stefan Agner
2019-01-15 9:53 ` Robert Chiras
2019-01-09 14:13 ` [PATCH 10/10] drm/mxsfb: Clear OUTSTANDING_REQS bits Robert Chiras
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