linux-kernel - [PATCH v1 07/18] media: hantro: Add a field to distinguish the hardware versions

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Message-Id: <20210217080306.157876-8-benjamin.gaignard@collabora.com>
Date:   Wed, 17 Feb 2021 09:02:55 +0100
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     ezequiel@...labora.com, p.zabel@...gutronix.de, mchehab@...nel.org,
        robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        gregkh@...uxfoundation.org, mripard@...nel.org,
        paul.kocialkowski@...tlin.com, wens@...e.org,
        jernej.skrabec@...l.net, krzk@...nel.org, shengjiu.wang@....com,
        adrian.ratiu@...labora.com, aisheng.dong@....com, peng.fan@....com,
        Anson.Huang@....com, hverkuil-cisco@...all.nl
Cc:     linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>
Subject: [PATCH v1 07/18] media: hantro: Add a field to distinguish the hardware versions

Decoders hardware blocks could exist in multiple versions: add
a field to distinguish them at runtime.
Keep the default behavoir to be G1 hardware.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@...labora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@...labora.com>
---
 drivers/staging/media/hantro/hantro.h     | 5 +++++
 drivers/staging/media/hantro/hantro_drv.c | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/drivers/staging/media/hantro/hantro.h b/drivers/staging/media/hantro/hantro.h
index bde65231f22f..2a566dfc2fe3 100644
--- a/drivers/staging/media/hantro/hantro.h
+++ b/drivers/staging/media/hantro/hantro.h
@@ -36,6 +36,9 @@ struct hantro_codec_ops;
 #define HANTRO_H264_DECODER	BIT(18)
 #define HANTRO_DECODERS		0xffff0000
 
+#define HANTRO_G1_REV		0x6731
+#define HANTRO_G2_REV		0x6732
+
 /**
  * struct hantro_irq - irq handler and name
  *
@@ -170,6 +173,7 @@ hantro_vdev_to_func(struct video_device *vdev)
  * @enc_base:		Mapped address of VPU encoder register for convenience.
  * @dec_base:		Mapped address of VPU decoder register for convenience.
  * @ctrl_base:		Mapped address of VPU control block.
+ * @core_hw_dec_rev	Runtime detected HW decoder core revision
  * @vpu_mutex:		Mutex to synchronize V4L2 calls.
  * @irqlock:		Spinlock to synchronize access to data structures
  *			shared with interrupt handlers.
@@ -189,6 +193,7 @@ struct hantro_dev {
 	void __iomem *enc_base;
 	void __iomem *dec_base;
 	void __iomem *ctrl_base;
+	u32 core_hw_dec_rev;
 
 	struct mutex vpu_mutex;	/* video_device lock */
 	spinlock_t irqlock;
diff --git a/drivers/staging/media/hantro/hantro_drv.c b/drivers/staging/media/hantro/hantro_drv.c
index 0570047c7fa0..e1443c394f62 100644
--- a/drivers/staging/media/hantro/hantro_drv.c
+++ b/drivers/staging/media/hantro/hantro_drv.c
@@ -840,6 +840,8 @@ static int hantro_probe(struct platform_device *pdev)
 	}
 	vpu->enc_base = vpu->reg_bases[0] + vpu->variant->enc_offset;
 	vpu->dec_base = vpu->reg_bases[0] + vpu->variant->dec_offset;
+	/* by default decoder is G1 */
+	vpu->core_hw_dec_rev = HANTRO_G1_REV;
 
 	ret = dma_set_coherent_mask(vpu->dev, DMA_BIT_MASK(32));
 	if (ret) {
-- 
2.25.1