linux-kernel - [PATCH 6/6] drm/komeda: Expose side_by_side by sysfs/config

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Date:   Thu, 4 Jul 2019 06:18:56 +0000
From:   "james qian wang (Arm Technology China)" <james.qian.wang@....com>
To:     Liviu Dudau <Liviu.Dudau@....com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        Brian Starkey <Brian.Starkey@....com>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "sean@...rly.run" <sean@...rly.run>
CC:     "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
        "Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
        Ayan Halder <Ayan.Halder@....com>,
        "Tiannan Zhu (Arm Technology China)" <Tiannan.Zhu@....com>,
        "Yiqi Kang (Arm Technology China)" <Yiqi.Kang@....com>,
        nd <nd@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Ben Davis <Ben.Davis@....com>,
        "Oscar Zhang (Arm Technology China)" <Oscar.Zhang@....com>,
        "Channing Chen (Arm Technology China)" <Channing.Chen@....com>,
        "james qian wang (Arm Technology China)" <james.qian.wang@....com>
Subject: [PATCH 6/6] drm/komeda: Expose side_by_side by sysfs/config_id

There are some restrictions if HW works on side_by_side, expose it by
config_id to user for taking care them.

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@....com>
---
 drivers/gpu/drm/arm/display/include/malidp_product.h | 3 ++-
 drivers/gpu/drm/arm/display/komeda/komeda_dev.c      | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/display/include/malidp_product.h b/drivers/gpu/drm/arm/display/include/malidp_product.h
index 1053b11352eb..96e2e4016250 100644
--- a/drivers/gpu/drm/arm/display/include/malidp_product.h
+++ b/drivers/gpu/drm/arm/display/include/malidp_product.h
@@ -27,7 +27,8 @@ union komeda_config_id {
 			n_scalers:2, /* number of scalers per pipeline */
 			n_layers:3, /* number of layers per pipeline */
 			n_richs:3, /* number of rich layers per pipeline */
-			reserved_bits:6;
+			side_by_side:1, /* if HW works on side_by_side mode */
+			reserved_bits:5;
 	};
 	__u32 value;
 };
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
index 2aee735a683f..0fc7b9f6f649 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
@@ -82,6 +82,7 @@ config_id_show(struct device *dev, struct device_attribute *attr, char *buf)
 	memset(&config_id, 0, sizeof(config_id));

 	config_id.max_line_sz = pipe->layers[0]->hsize_in.end;
+	config_id.side_by_side = mdev->side_by_side;
 	config_id.n_pipelines = mdev->n_pipelines;
 	config_id.n_scalers = pipe->n_scalers;
 	config_id.n_layers = pipe->n_layers;
--
2.20.1