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Tue, 22 Jan 2019 11:11:53 +0000 From: "james qian wang (Arm Technology China)" To: Liviu Dudau , "airlied@linux.ie" , Brian Starkey CC: "Jonathan Chai (Arm Technology China)" , "Julien Yin (Arm Technology China)" , "thomas Sun (Arm Technology China)" , "Lowry Li (Arm Technology China)" , Ayan Halder , "Tiannan Zhu (Arm Technology China)" , "Jin Gao (Arm Technology China)" , "Yiqi Kang (Arm Technology China)" , nd , "malidp@foss.arm.com" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "james qian wang (Arm Technology China)" Subject: [PATCH v2 10/11] drm/komeda: Add sysfs attribute: core_id and config_id Thread-Topic: [PATCH v2 10/11] drm/komeda: Add sysfs attribute: core_id and config_id Thread-Index: AQHUskNHnZZz5PyQ/k2C8sILEn4p3w== Date: Tue, 22 Jan 2019 11:11:53 +0000 Message-ID: <20190122110932.5138-11-james.qian.wang@arm.com> References: <20190122110932.5138-1-james.qian.wang@arm.com> In-Reply-To: <20190122110932.5138-1-james.qian.wang@arm.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [113.29.88.7] x-clientproxiedby: SYAPR01CA0034.ausprd01.prod.outlook.com (2603:10c6:1:1::22) To DB6PR0801MB1990.eurprd08.prod.outlook.com (2603:10a6:4:6c::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=james.qian.wang@arm.com; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2dcfaa57-e7a6-4330-7d73-08d6805a69dd X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Jan 2019 11:11:45.0100 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0801MB1352 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "james qian wang (Arm Technology China)" Add two sysfs node: core_id, config_id, user can read them to fetch the HW product information. v2: Rebase Signed-off-by: James Qian Wang (Arm Technology China) --- .../drm/arm/display/include/malidp_product.h | 12 +++++ .../gpu/drm/arm/display/komeda/komeda_dev.c | 48 +++++++++++++++++++ .../gpu/drm/arm/display/komeda/komeda_dev.h | 2 + .../gpu/drm/arm/display/komeda/komeda_drv.c | 7 +++ 4 files changed, 69 insertions(+) diff --git a/drivers/gpu/drm/arm/display/include/malidp_product.h b/drivers= /gpu/drm/arm/display/include/malidp_product.h index b35fc5db866b..1053b11352eb 100644 --- a/drivers/gpu/drm/arm/display/include/malidp_product.h +++ b/drivers/gpu/drm/arm/display/include/malidp_product.h @@ -20,4 +20,16 @@ /* Mali-display product IDs */ #define MALIDP_D71_PRODUCT_ID 0x0071 =20 +union komeda_config_id { + struct { + __u32 max_line_sz:16, + n_pipelines:2, + 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; + }; + __u32 value; +}; + #endif /* _MALIDP_PRODUCT_H_ */ diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/= drm/arm/display/komeda/komeda_dev.c index 7152f2c08e01..9e017ce89d69 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c @@ -53,6 +53,46 @@ static void komeda_debugfs_init(struct komeda_dev *mdev) mdev, &komeda_register_fops); } =20 +static ssize_t +core_id_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct komeda_dev *mdev =3D dev_to_mdev(dev); + + return snprintf(buf, PAGE_SIZE, "0x%08x\n", mdev->chip.core_id); +} +static DEVICE_ATTR_RO(core_id); + +static ssize_t +config_id_show(struct device *dev, struct device_attribute *attr, char *bu= f) +{ + struct komeda_dev *mdev =3D dev_to_mdev(dev); + struct komeda_pipeline *pipe =3D mdev->pipelines[0]; + union komeda_config_id config_id =3D {0,}; + int i; + + config_id.max_line_sz =3D pipe->layers[0]->hsize_in.end; + config_id.n_pipelines =3D mdev->n_pipelines; + config_id.n_scalers =3D pipe->n_scalers; + config_id.n_layers =3D pipe->n_layers; + config_id.n_richs =3D 0; + for (i =3D 0; i < pipe->n_layers; i++) { + if (pipe->layers[i]->layer_type =3D=3D KOMEDA_FMT_RICH_LAYER) + config_id.n_richs++; + } + return snprintf(buf, PAGE_SIZE, "0x%08x\n", config_id.value); +} +static DEVICE_ATTR_RO(config_id); + +static struct attribute *komeda_sysfs_entries[] =3D { + &dev_attr_core_id.attr, + &dev_attr_config_id.attr, + NULL, +}; + +static struct attribute_group komeda_sysfs_attr_group =3D { + .attrs =3D komeda_sysfs_entries, +}; + static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_nod= e *np) { struct komeda_pipeline *pipe; @@ -201,6 +241,12 @@ struct komeda_dev *komeda_dev_create(struct device *de= v) goto err_cleanup; } =20 + err =3D sysfs_create_group(&dev->kobj, &komeda_sysfs_attr_group); + if (err) { + DRM_ERROR("create sysfs group failed.\n"); + goto err_cleanup; + } + #ifdef CONFIG_DEBUG_FS komeda_debugfs_init(mdev); #endif @@ -218,6 +264,8 @@ void komeda_dev_destroy(struct komeda_dev *mdev) struct komeda_dev_funcs *funcs =3D mdev->funcs; int i; =20 + sysfs_remove_group(&dev->kobj, &komeda_sysfs_attr_group); + #ifdef CONFIG_DEBUG_FS debugfs_remove_recursive(mdev->debugfs_root); #endif diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/= drm/arm/display/komeda/komeda_dev.h index 8acd25afb3e9..0c3e32b596d9 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h @@ -190,4 +190,6 @@ d71_identify(u32 __iomem *reg, struct komeda_chip_info = *chip); struct komeda_dev *komeda_dev_create(struct device *dev); void komeda_dev_destroy(struct komeda_dev *mdev); =20 +struct komeda_dev *dev_to_mdev(struct device *dev); + #endif /*_KOMEDA_DEV_H_*/ diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/= drm/arm/display/komeda/komeda_drv.c index 2bdd189b041d..0285fd37a016 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c @@ -17,6 +17,13 @@ struct komeda_drv { struct komeda_kms_dev *kms; }; =20 +struct komeda_dev *dev_to_mdev(struct device *dev) +{ + struct komeda_drv *mdrv =3D dev_get_drvdata(dev); + + return mdrv ? mdrv->mdev : NULL; +} + static void komeda_unbind(struct device *dev) { struct komeda_drv *mdrv =3D dev_get_drvdata(dev); --=20 2.17.1