diff mbox series

[v1,07/18] media: hantro: Add a field to distinguish the hardware versions

Message ID 20210217080306.157876-8-benjamin.gaignard@collabora.com (mailing list archive)
State New
Headers show
Series Add HANTRO G2/HEVC decoder support for IMX8MQ | expand

Commit Message

Benjamin Gaignard Feb. 17, 2021, 8:02 a.m. UTC
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@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
---
 drivers/staging/media/hantro/hantro.h     | 5 +++++
 drivers/staging/media/hantro/hantro_drv.c | 2 ++
 2 files changed, 7 insertions(+)

Comments

Ezequiel Garcia Feb. 17, 2021, 8:15 p.m. UTC | #1
On Wed, 2021-02-17 at 09:02 +0100, Benjamin Gaignard wrote:
> 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@collabora.com>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.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;
>  

What's the use of this field? Can't we simply rely on the compatible string?

Thanks,
Ezequiel
Dan Carpenter Feb. 18, 2021, 10:55 a.m. UTC | #2
On Wed, Feb 17, 2021 at 09:02:55AM +0100, Benjamin Gaignard wrote:
> 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@collabora.com>
> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.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;
>  

This is a write only variable.  :P  Fold it in with the patch that uses
it.

regards,
dan carpenter
diff mbox series

Patch

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) {