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Message-ID: <20181204165629.GM988@e110455-lin.cambridge.arm.com>
Date: Tue, 4 Dec 2018 16:56:29 +0000
From: Liviu Dudau <Liviu.Dudau@....com>
To: Ayan Halder <Ayan.Halder@....com>
Cc: Brian Starkey <Brian.Starkey@....com>,
"malidp@...s.arm.com" <malidp@...s.arm.com>,
"airlied@...ux.ie" <airlied@...ux.ie>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"maxime.ripard@...tlin.com" <maxime.ripard@...tlin.com>,
"sean@...rly.run" <sean@...rly.run>,
"maarten.lankhorst@...ux.intel.com"
<maarten.lankhorst@...ux.intel.com>,
"corbet@....net" <corbet@....net>,
"mchehab+samsung@...nel.org" <mchehab+samsung@...nel.org>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"davem@...emloft.net" <davem@...emloft.net>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
"nicolas.ferre@...rochip.com" <nicolas.ferre@...rochip.com>,
"arnd@...db.de" <arnd@...db.de>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
nd <nd@....com>
Subject: Re: [RFC AFBC 05/12] drm/arm/malidp:- Define a common list of AFBC
format modifiers supported for DP500, DP550 and DP650
On Mon, Dec 03, 2018 at 11:31:59AM +0000, Ayan Halder wrote:
> We need to define a common list of format modifiers supported by each of the Mali
> display processors. The difference between DP500 from DP550/650 is that DP500
> does not support block split mode (ie AFBC_FORMAT_MOD_SPLIT) and DP550 supports
> YUV420 with split mode. We noted these special cases by defining MALIDP_DEVICE_AFBC_SUPPORT_SPLIT
> and AFBC_SUPPORT_SPLIT_WITH_YUV_420_10 for malidp_hw_regmap.features
>
> Also we have defined a set of meaningful macros to shorten the modifier names
>
> Signed-off-by: Ayan Kumar halder <ayan.halder@....com>
>
> Change-Id: I09fba2032a7474e6ce45af230e0ed18fc1f4c1df
> ---
> drivers/gpu/drm/arm/malidp_drv.c | 8 ++++----
> drivers/gpu/drm/arm/malidp_hw.c | 30 ++++++++++++++++++++++++++++--
> drivers/gpu/drm/arm/malidp_hw.h | 20 +++++++++++++++-----
> 3 files changed, 47 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
> index 505f316..b8db92f 100644
> --- a/drivers/gpu/drm/arm/malidp_drv.c
> +++ b/drivers/gpu/drm/arm/malidp_drv.c
> @@ -293,8 +293,8 @@ malidp_verify_afbc_framebuffer_caps(struct drm_device *dev,
> return false;
> }
>
> - switch (mode_cmd->modifier[0] & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
> - case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
> + switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
> + case AFBC_SIZE_16X16:
> if ((mode_cmd->width % 16) || (mode_cmd->height % 16)) {
> DRM_DEBUG_KMS("AFBC buffers must be aligned to 16 pixels\n");
> return false;
> @@ -319,8 +319,8 @@ malidp_verify_afbc_framebuffer_size(struct drm_device *dev,
> u32 afbc_superblock_size = 0, afbc_superblock_height = 0;
> u32 afbc_superblock_width = 0, afbc_size = 0;
>
> - switch (mode_cmd->modifier[0] & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
> - case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
> + switch (mode_cmd->modifier[0] & AFBC_SIZE_MASK) {
> + case AFBC_SIZE_16X16:
> afbc_superblock_height = 16;
> afbc_superblock_width = 16;
> break;
> diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c
> index 87b7b12..55d379b 100644
> --- a/drivers/gpu/drm/arm/malidp_hw.c
> +++ b/drivers/gpu/drm/arm/malidp_hw.c
> @@ -137,6 +137,32 @@ static const struct malidp_layer malidp650_layers[] = {
> ROTATE_NONE, 0 },
> };
>
> +const u64 malidp_format_modifiers[] = {
> + /* All RGB formats (except XRGB, RGBX, XBGR, BGRX) */
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR | AFBC_SPARSE),
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR),
> +
> + /* All RGB formats > 16bpp (except XRGB, RGBX, XBGR, BGRX) */
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_YTR | AFBC_SPARSE | AFBC_SPLIT),
> +
> + /* All 8 or 10 bit YUV 444 formats. */
> + /* In DP550, 10 bit YUV 420 format also supported */
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_SPARSE | AFBC_SPLIT),
> +
> + /* YUV 420, 422 P1 8 bit and YUV 444 8 bit/10 bit formats */
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_SPARSE),
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16),
> +
> + /* YUV 420, 422 P1 8, 10 bit formats */
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_CBR | AFBC_SPARSE),
> + DRM_FORMAT_MOD_ARM_AFBC(AFBC_SIZE_16X16 | AFBC_CBR),
> +
> + /* All formats */
> + DRM_FORMAT_MOD_LINEAR,
> +
> + DRM_FORMAT_MOD_INVALID
> +};
> +
> #define SE_N_SCALING_COEFFS 96
> static const u16 dp500_se_scaling_coeffs[][SE_N_SCALING_COEFFS] = {
> [MALIDP_UPSCALING_COEFFS - 1] = {
> @@ -841,7 +867,7 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
> .se_base = MALIDP550_SE_BASE,
> .dc_base = MALIDP550_DC_BASE,
> .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
> - .features = MALIDP_REGMAP_HAS_CLEARIRQ,
> + .features = MALIDP_REGMAP_HAS_CLEARIRQ | MALIDP_DEVICE_AFBC_SUPPORT_SPLIT | AFBC_SUPPORT_SPLIT_WITH_YUV_420_10,
> .n_layers = ARRAY_SIZE(malidp550_layers),
> .layers = malidp550_layers,
> .de_irq_map = {
> @@ -887,7 +913,7 @@ const struct malidp_hw malidp_device[MALIDP_MAX_DEVICES] = {
> .se_base = MALIDP550_SE_BASE,
> .dc_base = MALIDP550_DC_BASE,
> .out_depth_base = MALIDP550_DE_OUTPUT_DEPTH,
> - .features = MALIDP_REGMAP_HAS_CLEARIRQ,
> + .features = MALIDP_REGMAP_HAS_CLEARIRQ | MALIDP_DEVICE_AFBC_SUPPORT_SPLIT,
> .n_layers = ARRAY_SIZE(malidp650_layers),
> .layers = malidp650_layers,
> .de_irq_map = {
> diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h
> index 651558f..27b907f 100644
> --- a/drivers/gpu/drm/arm/malidp_hw.h
> +++ b/drivers/gpu/drm/arm/malidp_hw.h
> @@ -95,7 +95,9 @@ struct malidp_se_config {
> };
>
> /* regmap features */
> -#define MALIDP_REGMAP_HAS_CLEARIRQ (1 << 0)
> +#define MALIDP_REGMAP_HAS_CLEARIRQ BIT(0)
> +#define MALIDP_DEVICE_AFBC_SUPPORT_SPLIT BIT(1)
> +#define AFBC_SUPPORT_SPLIT_WITH_YUV_420_10 BIT(2)
>
> struct malidp_hw_regmap {
> /* address offset of the DE register bank */
> @@ -390,9 +392,17 @@ static inline void malidp_se_set_enh_coeffs(struct malidp_hw_device *hwdev)
>
> #define MALIDP_GAMMA_LUT_SIZE 4096
>
> -#define AFBC_MOD_VALID_BITS (AFBC_FORMAT_MOD_BLOCK_SIZE_MASK | \
> - AFBC_FORMAT_MOD_YTR | AFBC_FORMAT_MOD_SPLIT | \
> - AFBC_FORMAT_MOD_SPARSE | AFBC_FORMAT_MOD_CBR | \
> - AFBC_FORMAT_MOD_TILED | AFBC_FORMAT_MOD_SC)
> +#define AFBC_SIZE_MASK AFBC_FORMAT_MOD_BLOCK_SIZE_MASK
> +#define AFBC_SIZE_16X16 AFBC_FORMAT_MOD_BLOCK_SIZE_16x16
> +#define AFBC_YTR AFBC_FORMAT_MOD_YTR
> +#define AFBC_SPARSE AFBC_FORMAT_MOD_SPARSE
> +#define AFBC_CBR AFBC_FORMAT_MOD_CBR
> +#define AFBC_SPLIT AFBC_FORMAT_MOD_SPLIT
> +#define AFBC_TILED AFBC_FORMAT_MOD_TILED
> +#define AFBC_SC AFBC_FORMAT_MOD_SC
Why do you need the aliasing of the names? Just to help the typing?
> +
> +#define AFBC_MOD_VALID_BITS (AFBC_SIZE_MASK | AFBC_YTR | AFBC_SPLIT | AFBC_SPARSE | AFBC_CBR | AFBC_TILED | AFBC_SC)
The length of the lines are getting a bit too big, maybe follow the
style of the code you are removing and split the macro into multiple
lines?
Best regards,
Liviu
> +
> +extern const u64 malidp_format_modifiers[];
>
> #endif /* __MALIDP_HW_H__ */
> --
> 2.7.4
>
--
====================
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| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
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