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Date: Sun, 24 Apr 2022 22:02:09 +0200
From: Jernej Škrabec <jernej.skrabec@...il.com>
To: Chen-Yu Tsai <wens@...e.org>, Maxime Ripard <mripard@...nel.org>,
Samuel Holland <samuel@...lland.org>
Cc: Samuel Holland <samuel@...lland.org>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...ux.ie>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH v3 10/14] drm/sun4i: csc: Add support for the new MMIO layout
Dne nedelja, 24. april 2022 ob 18:26:28 CEST je Samuel Holland napisal(a):
> D1 changes the MMIO offsets for the CSC blocks in the first mixer. The
> mixers' ccsc property is used as an index into the ccsc_base array. Use
> an enumeration to describe this index, and add the new set of offsets.
>
> Signed-off-by: Samuel Holland <samuel@...lland.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@...il.com>
Best regards,
Jernej Skrabec
> ---
>
> (no changes since v2)
>
> Changes in v2:
> - Use an enumeration for the ccsc value.
>
> drivers/gpu/drm/sun4i/sun8i_csc.c | 7 ++++---
> drivers/gpu/drm/sun4i/sun8i_csc.h | 1 +
> drivers/gpu/drm/sun4i/sun8i_mixer.c | 18 +++++++++---------
> drivers/gpu/drm/sun4i/sun8i_mixer.h | 14 ++++++++++----
> 4 files changed, 24 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.c b/drivers/gpu/drm/sun4i/
sun8i_csc.c
> index 9bd62de0c288..58480d8e4f70 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_csc.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_csc.c
> @@ -8,9 +8,10 @@
> #include "sun8i_csc.h"
> #include "sun8i_mixer.h"
>
> -static const u32 ccsc_base[2][2] = {
> - {CCSC00_OFFSET, CCSC01_OFFSET},
> - {CCSC10_OFFSET, CCSC11_OFFSET},
> +static const u32 ccsc_base[][2] = {
> + [CCSC_MIXER0_LAYOUT] = {CCSC00_OFFSET, CCSC01_OFFSET},
> + [CCSC_MIXER1_LAYOUT] = {CCSC10_OFFSET, CCSC11_OFFSET},
> + [CCSC_D1_MIXER0_LAYOUT] = {CCSC00_OFFSET,
CCSC01_D1_OFFSET},
> };
>
> /*
> diff --git a/drivers/gpu/drm/sun4i/sun8i_csc.h b/drivers/gpu/drm/sun4i/
sun8i_csc.h
> index 022cafa6c06c..828b86fd0cab 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_csc.h
> +++ b/drivers/gpu/drm/sun4i/sun8i_csc.h
> @@ -13,6 +13,7 @@ struct sun8i_mixer;
> /* VI channel CSC units offsets */
> #define CCSC00_OFFSET 0xAA050
> #define CCSC01_OFFSET 0xFA050
> +#define CCSC01_D1_OFFSET 0xFA000
> #define CCSC10_OFFSET 0xA0000
> #define CCSC11_OFFSET 0xF0000
>
> diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/
sun8i_mixer.c
> index 6b1711a9a71f..4ce593c99807 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
> @@ -564,7 +564,7 @@ static int sun8i_mixer_remove(struct platform_device
*pdev)
> }
>
> static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg = {
> - .ccsc = 0,
> + .ccsc = CCSC_MIXER0_LAYOUT,
> .scaler_mask = 0xf,
> .scanline_yuv = 2048,
> .ui_num = 3,
> @@ -572,7 +572,7 @@ static const struct sun8i_mixer_cfg
sun8i_a83t_mixer0_cfg = {
> };
>
> static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg = {
> - .ccsc = 1,
> + .ccsc = CCSC_MIXER1_LAYOUT,
> .scaler_mask = 0x3,
> .scanline_yuv = 2048,
> .ui_num = 1,
> @@ -580,7 +580,7 @@ static const struct sun8i_mixer_cfg
sun8i_a83t_mixer1_cfg = {
> };
>
> static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = {
> - .ccsc = 0,
> + .ccsc = CCSC_MIXER0_LAYOUT,
> .mod_rate = 432000000,
> .scaler_mask = 0xf,
> .scanline_yuv = 2048,
> @@ -589,7 +589,7 @@ static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg
= {
> };
>
> static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg = {
> - .ccsc = 0,
> + .ccsc = CCSC_MIXER0_LAYOUT,
> .mod_rate = 297000000,
> .scaler_mask = 0xf,
> .scanline_yuv = 2048,
> @@ -598,7 +598,7 @@ static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg
= {
> };
>
> static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg = {
> - .ccsc = 1,
> + .ccsc = CCSC_MIXER1_LAYOUT,
> .mod_rate = 297000000,
> .scaler_mask = 0x3,
> .scanline_yuv = 2048,
> @@ -611,12 +611,12 @@ static const struct sun8i_mixer_cfg
sun8i_v3s_mixer_cfg = {
> .ui_num = 1,
> .scaler_mask = 0x3,
> .scanline_yuv = 2048,
> - .ccsc = 0,
> + .ccsc = CCSC_MIXER0_LAYOUT,
> .mod_rate = 150000000,
> };
>
> static const struct sun8i_mixer_cfg sun50i_a64_mixer0_cfg = {
> - .ccsc = 0,
> + .ccsc = CCSC_MIXER0_LAYOUT,
> .mod_rate = 297000000,
> .scaler_mask = 0xf,
> .scanline_yuv = 4096,
> @@ -625,7 +625,7 @@ static const struct sun8i_mixer_cfg
sun50i_a64_mixer0_cfg = {
> };
>
> static const struct sun8i_mixer_cfg sun50i_a64_mixer1_cfg = {
> - .ccsc = 1,
> + .ccsc = CCSC_MIXER1_LAYOUT,
> .mod_rate = 297000000,
> .scaler_mask = 0x3,
> .scanline_yuv = 2048,
> @@ -634,7 +634,7 @@ static const struct sun8i_mixer_cfg
sun50i_a64_mixer1_cfg = {
> };
>
> static const struct sun8i_mixer_cfg sun50i_h6_mixer0_cfg = {
> - .ccsc = 0,
> + .ccsc = CCSC_MIXER0_LAYOUT,
> .is_de3 = true,
> .mod_rate = 600000000,
> .scaler_mask = 0xf,
> diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.h b/drivers/gpu/drm/sun4i/
sun8i_mixer.h
> index 5b3fbee18671..85c94884fb9a 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_mixer.h
> +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.h
> @@ -141,6 +141,15 @@
> #define SUN50I_MIXER_CDC0_EN 0xd0000
> #define SUN50I_MIXER_CDC1_EN 0xd8000
>
> +enum {
> + /* First mixer or second mixer with VEP support. */
> + CCSC_MIXER0_LAYOUT,
> + /* Second mixer without VEP support. */
> + CCSC_MIXER1_LAYOUT,
> + /* First mixer with the MMIO layout found in the D1 SoC. */
> + CCSC_D1_MIXER0_LAYOUT,
> +};
> +
> /**
> * struct sun8i_mixer_cfg - mixer HW configuration
> * @vi_num: number of VI channels
> @@ -149,10 +158,7 @@
> * First, scaler supports for VI channels is defined and after that,
scaler
> * support for UI channels. For example, if mixer has 2 VI channels
without
> * scaler and 2 UI channels with scaler, bitmask would be 0xC.
> - * @ccsc: select set of CCSC base addresses
> - * Set value to 0 if this is first mixer or second mixer with VEP
support.
> - * Set value to 1 if this is second mixer without VEP support. Other
values
> - * are invalid.
> + * @ccsc: select set of CCSC base addresses from the enumeration above.
> * @mod_rate: module clock rate that needs to be set in order to have
> * a functional block.
> * @is_de3: true, if this is next gen display engine 3.0, false otherwise.
> --
> 2.35.1
>
>
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