From: Enric Balletbo i Serra <enric.balletbo@collabora.com>
To: matthias.bgg@kernel.org, robh+dt@kernel.org,
mark.rutland@arm.com, ck.hu@mediatek.com, p.zabel@pengutronix.de,
airlied@linux.ie, mturquette@baylibre.com, sboyd@kernel.org,
ulrich.hecht+renesas@gmail.com,
laurent.pinchart@ideasonboard.com
Cc: sean.wang@mediatek.com, sean.wang@kernel.org,
rdunlap@infradead.org, wens@csie.org, hsinyi@chromium.org,
frank-w@public-files.de, drinkcat@chromium.org,
linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-clk@vger.kernel.org,
devicetree@vger.kernel.org, mbrugger@suse.com
Subject: Re: [resend PATCH v6 12/12] drm/mediatek: Add support for mmsys through a pdev
Date: Mon, 9 Dec 2019 11:15:33 +0100 [thread overview]
Message-ID: <96c850e0-9b12-a943-4e99-9aca7ce8ca8b@collabora.com> (raw)
In-Reply-To: <20191207224740.24536-13-matthias.bgg@kernel.org>
Hi Matthias,
Just one nit below and LGTM
On 7/12/19 23:47, matthias.bgg@kernel.org wrote:
> From: Matthias Brugger <mbrugger@suse.com>
>
> The MMSYS subsystem includes clocks and drm components.
> This patch adds an initailization path through a platform device
> for the clock part, so that both drivers get probed from the same
> device tree compatible.
>
> Signed-off-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
> ---
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 24 ++++++++++++++++++++++++
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 ++
> 2 files changed, 26 insertions(+)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index 210455e9f46c..5ada74d8d0c9 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -186,6 +186,7 @@ static const struct mtk_mmsys_driver_data mt2701_mmsys_driver_data = {
> .ext_path = mt2701_mtk_ddp_ext,
> .ext_len = ARRAY_SIZE(mt2701_mtk_ddp_ext),
> .shadow_register = true,
> + .clk_drv_name = "clk-mt2701-mm",
> };
>
> static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
> @@ -195,6 +196,7 @@ static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
> .ext_len = ARRAY_SIZE(mt2712_mtk_ddp_ext),
> .third_path = mt2712_mtk_ddp_third,
> .third_len = ARRAY_SIZE(mt2712_mtk_ddp_third),
> + .clk_drv_name = "clk-mt2712-mm",
> };
>
> static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
> @@ -202,6 +204,7 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
> .main_len = ARRAY_SIZE(mt8173_mtk_ddp_main),
> .ext_path = mt8173_mtk_ddp_ext,
> .ext_len = ARRAY_SIZE(mt8173_mtk_ddp_ext),
> + .clk_drv_name = "clk-mt8173-mm",
> };
>
> static int mtk_drm_kms_init(struct drm_device *drm)
> @@ -499,6 +502,24 @@ static int mtk_drm_probe(struct platform_device *pdev)
> INIT_WORK(&private->commit.work, mtk_atomic_work);
> private->data = of_device_get_match_data(dev);
>
> + /*
> + * MMSYS includes apart from components management a block providing
> + * clocks for the subsystem. We probe this clock driver via a platform
> + * device.
> + */
> + if (private->data->clk_drv_name) {
> + private->clk_dev = platform_device_register_data(dev,
> + private->data->clk_drv_name, -1,
> + NULL, 0);
Replace -1 for PLATFORM_DEVID_NONE
> +
> + if (IS_ERR(private->clk_dev)) {
> + dev_err(dev, "failed to register %s platform device\n",
> + private->data->clk_drv_name);
> +
> + return PTR_ERR(private->clk_dev);
> + }
> + }
> +
> private->config_regs = syscon_node_to_regmap(dev->of_node);
> if (IS_ERR(private->config_regs))
> return PTR_ERR(private->config_regs);
> @@ -605,6 +626,9 @@ static int mtk_drm_remove(struct platform_device *pdev)
> for (i = 0; i < DDP_COMPONENT_ID_MAX; i++)
> of_node_put(private->comp_node[i]);
>
> + if (private->clk_dev)
> + platform_device_unregister(private->clk_dev);
> +
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.h b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> index 63a121577dcb..8fe9136adc38 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.h
> @@ -29,11 +29,13 @@ struct mtk_mmsys_driver_data {
> unsigned int third_len;
>
> bool shadow_register;
> + const char *clk_drv_name;
> };
>
> struct mtk_drm_private {
> struct drm_device *drm;
> struct device *dma_dev;
> + struct platform_device *clk_dev;
>
> unsigned int num_pipes;
>
>
next prev parent reply other threads:[~2019-12-09 10:15 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-07 22:47 [resend PATCH v6 00/12] arm/arm64: mediatek: Fix mmsys device probing matthias.bgg
2019-12-07 22:47 ` [resend PATCH v6 01/12] dt-bindings: display: mediatek: Add mmsys binding description matthias.bgg
2019-12-09 5:12 ` CK Hu
2019-12-09 8:48 ` Enric Balletbo i Serra
2020-02-13 18:17 ` Matthias Brugger
2019-12-18 16:39 ` Rob Herring
2019-12-07 22:47 ` [resend PATCH v6 02/12] dt-bindings: mediatek: Add compatible for mt7623 matthias.bgg
2019-12-09 8:51 ` Enric Balletbo i Serra
2019-12-18 17:02 ` Rob Herring
2019-12-07 22:47 ` [resend PATCH v6 03/12] drm/mediatek: Use regmap for register access matthias.bgg
2019-12-09 5:16 ` CK Hu
2019-12-07 22:47 ` [resend PATCH v6 04/12] drm: mediatek: Omit warning on probe defers matthias.bgg
2019-12-09 5:19 ` CK Hu
2019-12-09 9:39 ` Enric Balletbo i Serra
2020-02-13 18:58 ` Matthias Brugger
2019-12-07 22:47 ` [resend PATCH v6 05/12] media: mtk-mdp: Check return value of of_clk_get matthias.bgg
2019-12-09 9:50 ` Enric Balletbo i Serra
2019-12-07 22:47 ` [resend PATCH v6 06/12] clk: mediatek: mt2701: switch mmsys to platform device probing matthias.bgg
2019-12-09 9:58 ` Enric Balletbo i Serra
2020-02-13 19:11 ` Matthias Brugger
2019-12-07 22:47 ` [resend PATCH v6 07/12] clk: mediatek: mt2712e: switch " matthias.bgg
2019-12-09 9:59 ` Enric Balletbo i Serra
2019-12-07 22:47 ` [resend PATCH v6 08/12] clk: mediatek: mt6779: switch mmsys " matthias.bgg
2019-12-09 10:01 ` Enric Balletbo i Serra
2019-12-07 22:47 ` [resend PATCH v6 09/12] clk: mediatek: mt6797: switch " matthias.bgg
2019-12-07 22:47 ` [resend PATCH v6 10/12] clk: mediatek: mt8183: switch mmsys " matthias.bgg
2019-12-09 8:51 ` CK Hu
2020-02-13 19:35 ` Matthias Brugger
2019-12-07 22:47 ` [resend PATCH v6 11/12] clk: mediatek: mt8173: " matthias.bgg
2019-12-07 22:47 ` [resend PATCH v6 12/12] drm/mediatek: Add support for mmsys through a pdev matthias.bgg
2019-12-09 5:34 ` CK Hu
2020-02-13 19:46 ` Matthias Brugger
2019-12-09 10:15 ` Enric Balletbo i Serra [this message]
2020-02-13 2:57 ` [resend PATCH v6 00/12] arm/arm64: mediatek: Fix mmsys device probing CK Hu
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