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[209.132.180.67]) by mx.google.com with ESMTP id c65si11634187pfa.148.2018.12.17.06.19.39; Mon, 17 Dec 2018 06:19:54 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732388AbeLQOBM (ORCPT + 99 others); Mon, 17 Dec 2018 09:01:12 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:56700 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727329AbeLQOBM (ORCPT ); Mon, 17 Dec 2018 09:01:12 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 60D05A78; Mon, 17 Dec 2018 06:01:11 -0800 (PST) Received: from e110455-lin.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0CDE43F59C; Mon, 17 Dec 2018 06:01:11 -0800 (PST) Received: by e110455-lin.cambridge.arm.com (Postfix, from userid 1000) id 5D1E4680208; Mon, 17 Dec 2018 14:01:09 +0000 (GMT) Date: Mon, 17 Dec 2018 14:01:09 +0000 From: Liviu Dudau To: Ayan Halder Cc: "linux-doc@vger.kernel.org" , "arnd@arndb.de" , "corbet@lwn.net" , "airlied@linux.ie" , "gregkh@linuxfoundation.org" , "nicolas.ferre@microchip.com" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "davem@davemloft.net" , "maxime.ripard@bootlin.com" , "malidp@foss.arm.com" , "mchehab+samsung@kernel.org" , "akpm@linux-foundation.org" , nd , "sean@poorly.run" Subject: Re: [RFC v3 AFBC 04/12] drm/arm/malidp: Set the AFBC register bits if the framebuffer has AFBC modifier Message-ID: <20181217140109.GY988@e110455-lin.cambridge.arm.com> References: <1543836703-8491-1-git-send-email-ayan.halder@arm.com> <1543836703-8491-5-git-send-email-ayan.halder@arm.com> <20181204165051.GL988@e110455-lin.cambridge.arm.com> <20181214134512.GA19564@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20181214134512.GA19564@arm.com> User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 14, 2018 at 01:45:13PM +0000, Ayan Halder wrote: > On Tue, Dec 04, 2018 at 04:50:51PM +0000, Liviu Dudau wrote: > > Hi Liviu, > > Please let me know if you agree with my comments. Then I will send a > v4 patch for this. > > On Mon, Dec 03, 2018 at 11:31:58AM +0000, Ayan Halder wrote: > > > Added the AFBC decoder registers for DP500 , DP550 and DP650. > > > These registers control the processing of AFBC buffers. It controls various > > > features like AFBC decoder enable, lossless transformation and block split > > > as well as setting of the left, right, top and bottom cropping of AFBC buffers > > > (in number of pixels). > > > All the layers (except DE_SMART) support framebuffers with AFBC modifiers. > > > One needs to set the pixel values of the top, left, bottom and right cropping > > > for the AFBC framebuffer. > > > Cropping an AFBC framebuffer is controlled by the AFBC crop registers. > > > In that case, the layer input size registers should be configured with > > > framebuffer's dimensions and not with drm_plane_state source width/height > > > values (which is used for non AFBC framebuffer to denote cropping). > > > > > > Changes from v1: > > > - Removed the "if (fb->modifier)" check from malidp_de_plane_update() > > > and added it in malidp_de_set_plane_afbc(). This will consolidate all the > > > AFBC specific register configurations in a single function ie > > > malidp_de_set_plane_afbc(). > > > > > > Changes from v2: > > > - For AFBC framebuffer, layer input size register should be set to framebuffer's > > > width and height > > > > > > Signed-off-by: Ayan Kumar Halder > > > --- > > > drivers/gpu/drm/arm/malidp_hw.c | 25 +++++---- > > > drivers/gpu/drm/arm/malidp_hw.h | 2 + > > > drivers/gpu/drm/arm/malidp_planes.c | 109 +++++++++++++++++++++++++++++++----- > > > drivers/gpu/drm/arm/malidp_regs.h | 20 +++++++ > > > 4 files changed, 130 insertions(+), 26 deletions(-) > > > > > > diff --git a/drivers/gpu/drm/arm/malidp_hw.c b/drivers/gpu/drm/arm/malidp_hw.c > > > index b9bed11..87b7b12 100644 > > > --- a/drivers/gpu/drm/arm/malidp_hw.c > > > +++ b/drivers/gpu/drm/arm/malidp_hw.c > > > @@ -94,11 +94,12 @@ static const struct malidp_layer malidp500_layers[] = { > > > * yuv2rgb matrix offset, mmu control register offset, rotation_features > > > */ > > > { DE_VIDEO1, MALIDP500_DE_LV_BASE, MALIDP500_DE_LV_PTR_BASE, > > > - MALIDP_DE_LV_STRIDE0, MALIDP500_LV_YUV2RGB, 0, ROTATE_ANY }, > > > + MALIDP_DE_LV_STRIDE0, MALIDP500_LV_YUV2RGB, 0, ROTATE_ANY, > > > + MALIDP500_DE_LV_AD_CTRL }, > > > { DE_GRAPHICS1, MALIDP500_DE_LG1_BASE, MALIDP500_DE_LG1_PTR_BASE, > > > - MALIDP_DE_LG_STRIDE, 0, 0, ROTATE_ANY }, > > > + MALIDP_DE_LG_STRIDE, 0, 0, ROTATE_ANY, MALIDP500_DE_LG1_AD_CTRL }, > > > { DE_GRAPHICS2, MALIDP500_DE_LG2_BASE, MALIDP500_DE_LG2_PTR_BASE, > > > - MALIDP_DE_LG_STRIDE, 0, 0, ROTATE_ANY }, > > > + MALIDP_DE_LG_STRIDE, 0, 0, ROTATE_ANY, MALIDP500_DE_LG2_AD_CTRL }, > > > }; > > > > > > static const struct malidp_layer malidp550_layers[] = { > > > @@ -106,13 +107,15 @@ static const struct malidp_layer malidp550_layers[] = { > > > * yuv2rgb matrix offset, mmu control register offset, rotation_features > > > */ > > > { DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE, > > > - MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB, 0, ROTATE_ANY }, > > > + MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB, 0, ROTATE_ANY, > > > + MALIDP550_DE_LV1_AD_CTRL }, > > > { DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE, > > > - MALIDP_DE_LG_STRIDE, 0, 0, ROTATE_ANY }, > > > + MALIDP_DE_LG_STRIDE, 0, 0, ROTATE_ANY, MALIDP550_DE_LG_AD_CTRL }, > > > { DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE, > > > - MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB, 0, ROTATE_ANY }, > > > + MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB, 0, ROTATE_ANY, > > > + MALIDP550_DE_LV2_AD_CTRL }, > > > { DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE, > > > - MALIDP550_DE_LS_R1_STRIDE, 0, 0, ROTATE_NONE }, > > > + MALIDP550_DE_LS_R1_STRIDE, 0, 0, ROTATE_NONE, 0 }, > > > }; > > > > > > static const struct malidp_layer malidp650_layers[] = { > > > @@ -122,16 +125,16 @@ static const struct malidp_layer malidp650_layers[] = { > > > */ > > > { DE_VIDEO1, MALIDP550_DE_LV1_BASE, MALIDP550_DE_LV1_PTR_BASE, > > > MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB, > > > - MALIDP650_DE_LV_MMU_CTRL, ROTATE_ANY }, > > > + MALIDP650_DE_LV_MMU_CTRL, ROTATE_ANY, MALIDP550_DE_LV1_AD_CTRL }, > > > { DE_GRAPHICS1, MALIDP550_DE_LG_BASE, MALIDP550_DE_LG_PTR_BASE, > > > MALIDP_DE_LG_STRIDE, 0, MALIDP650_DE_LG_MMU_CTRL, > > > - ROTATE_COMPRESSED }, > > > + ROTATE_COMPRESSED, MALIDP550_DE_LG_AD_CTRL }, > > > { DE_VIDEO2, MALIDP550_DE_LV2_BASE, MALIDP550_DE_LV2_PTR_BASE, > > > MALIDP_DE_LV_STRIDE0, MALIDP550_LV_YUV2RGB, > > > - MALIDP650_DE_LV_MMU_CTRL, ROTATE_ANY }, > > > + MALIDP650_DE_LV_MMU_CTRL, ROTATE_ANY, MALIDP550_DE_LV2_AD_CTRL }, > > > { DE_SMART, MALIDP550_DE_LS_BASE, MALIDP550_DE_LS_PTR_BASE, > > > MALIDP550_DE_LS_R1_STRIDE, 0, MALIDP650_DE_LS_MMU_CTRL, > > > - ROTATE_NONE }, > > > + ROTATE_NONE, 0 }, > > > }; > > > > > > #define SE_N_SCALING_COEFFS 96 > > > diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h > > > index 40155e2..651558f 100644 > > > --- a/drivers/gpu/drm/arm/malidp_hw.h > > > +++ b/drivers/gpu/drm/arm/malidp_hw.h > > > @@ -70,6 +70,8 @@ struct malidp_layer { > > > s16 yuv2rgb_offset; /* offset to the YUV->RGB matrix entries */ > > > u16 mmu_ctrl_offset; /* offset to the MMU control register */ > > > enum rotation_features rot; /* type of rotation supported */ > > > + /* address offset for the AFBC decoder registers */ > > > + u16 afbc_decoder_offset; > > > }; > > > > > > enum malidp_scaling_coeff_set { > > > diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c > > > index c9a6d3e..cd60f73 100644 > > > --- a/drivers/gpu/drm/arm/malidp_planes.c > > > +++ b/drivers/gpu/drm/arm/malidp_planes.c > > > @@ -592,6 +592,80 @@ static void malidp_de_set_mmu_control(struct malidp_plane *mp, > > > mp->layer->base + mp->layer->mmu_ctrl_offset); > > > } > > > > > > +static void malidp_set_plane_base_addr(struct drm_framebuffer *fb, > > > + struct malidp_plane *mp, > > > + int plane_index) > > > +{ > > > + dma_addr_t paddr; > > > + u16 ptr; > > > + struct drm_plane *plane = &mp->base; > > > + bool afbc = fb->modifier ? true : false; > > > + > > > + ptr = mp->layer->ptr + (plane_index << 4); > > > + > > > + /* > > > + * For AFBC buffers, cropping is handled by AFBC decoder rather than > > > + * pointer manipulation. > > > + */ > > > > I think this comment needs to go in malidp_de_plane_update, not in this function. > > This function only updates the plane's base address. > > > I will reword the comment like this if it sounds sane :- > > drm_fb_cma_get_gem_addr() alters the physical base address of the framebuffer > as per the plane's src_x, src_y co-ordinates (ie to take care of source cropping). > For AFBC, this is not needed as the cropping is handled by _AD_CROP_H > and _AD_CROP_V registers. Yeah, that sounds more in line with what the code does. > > > > + if (!afbc) { > > > + paddr = drm_fb_cma_get_gem_addr(fb, plane->state, > > > + plane_index); > > > + } else { > > > + struct drm_gem_cma_object *obj; > > > + > > > + obj = drm_fb_cma_get_gem_obj(fb, plane_index); > > > + > > > + if (WARN_ON(!obj)) > > > + return; > > > + paddr = obj->paddr; > > > + } > > > + > > > + malidp_hw_write(mp->hwdev, lower_32_bits(paddr), ptr); > > > + malidp_hw_write(mp->hwdev, upper_32_bits(paddr), ptr + 4); > > > +} > > > + > > > +static void malidp_de_set_plane_afbc(struct drm_plane *plane) > > > +{ > > > + struct malidp_plane *mp; > > > + u32 src_w, src_h, val = 0, src_x, src_y; > > > + struct drm_framebuffer *fb = plane->state->fb; > > > + > > > + mp = to_malidp_plane(plane); > > > + > > > + /* no afbc_decoder_offset means AFBC is not supported on this plane */ > > > + if (!mp->layer->afbc_decoder_offset) > > > + return; > > > + > > > + if (!fb->modifier) { > > > + malidp_hw_write(mp->hwdev, 0, mp->layer->afbc_decoder_offset); > > > + return; > > > + } > > > + > > > + /* convert src values from Q16 fixed point to integer */ > > > + src_w = plane->state->src_w >> 16; > > > + src_h = plane->state->src_h >> 16; > > > + src_x = plane->state->src_x >> 16; > > > + src_y = plane->state->src_y >> 16; > > > + > > > + val = ((fb->width - (src_x + src_w)) << MALIDP_AD_CROP_RIGHT_OFFSET) | > > > + src_x; > > > + malidp_hw_write(mp->hwdev, val, > > > + mp->layer->afbc_decoder_offset + MALIDP_AD_CROP_H); > > > + > > > + val = ((fb->height - (src_y + src_h)) << MALIDP_AD_CROP_BOTTOM_OFFSET) | > > > + src_y; > > > + malidp_hw_write(mp->hwdev, val, > > > + mp->layer->afbc_decoder_offset + MALIDP_AD_CROP_V); > > > + > > > + val = MALIDP_AD_EN; > > > + if (fb->modifier & AFBC_FORMAT_MOD_SPLIT) > > > + val |= MALIDP_AD_BS; > > > + if (fb->modifier & AFBC_FORMAT_MOD_YTR) > > > + val |= MALIDP_AD_YTR; > > > + > > > + malidp_hw_write(mp->hwdev, val, mp->layer->afbc_decoder_offset); > > > +} > > > + > > > static void malidp_de_plane_update(struct drm_plane *plane, > > > struct drm_plane_state *old_state) > > > { > > > @@ -600,30 +674,33 @@ static void malidp_de_plane_update(struct drm_plane *plane, > > > struct drm_plane_state *state = plane->state; > > > u16 pixel_alpha = state->pixel_blend_mode; > > > u8 plane_alpha = state->alpha >> 8; > > > + bool format_has_alpha = state->fb->format->has_alpha; > > > u32 src_w, src_h, dest_w, dest_h, val; > > > int i; > > > + struct drm_framebuffer *fb = plane->state->fb; > > > > > > mp = to_malidp_plane(plane); > > > > > > - /* convert src values from Q16 fixed point to integer */ > > > - src_w = state->src_w >> 16; > > > - src_h = state->src_h >> 16; > > > - dest_w = state->crtc_w; > > > - dest_h = state->crtc_h; > > > + /* For AFBC framebuffer, use the framebuffer width and height for configuring > > > + * layer input size register. > > > + */ > > > + if (fb->modifier) { > > > + src_w = fb->width; > > > + src_h = fb->height; > > > + } else { > > > + /* convert src values from Q16 fixed point to integer */ > > > + src_w = ms->base.src_w >> 16; > > > + src_h = ms->base.src_h >> 16; > > > + } > > > + dest_w = ms->base.crtc_w; > > > + dest_h = ms->base.crtc_h; > > > > These two lines above are equivalent to the last two lines you deleted. Why you need this change? > > > Agreed, I will remove this change. > > > > > > val = malidp_hw_read(mp->hwdev, mp->layer->base); > > > val = (val & ~LAYER_FORMAT_MASK) | ms->format; > > > malidp_hw_write(mp->hwdev, val, mp->layer->base); > > > > > > - for (i = 0; i < ms->n_planes; i++) { > > > - /* calculate the offset for the layer's plane registers */ > > > - u16 ptr = mp->layer->ptr + (i << 4); > > > - dma_addr_t fb_addr = drm_fb_cma_get_gem_addr(state->fb, > > > - state, i); > > > - > > > - malidp_hw_write(mp->hwdev, lower_32_bits(fb_addr), ptr); > > > - malidp_hw_write(mp->hwdev, upper_32_bits(fb_addr), ptr + 4); > > > - } > > > + for (i = 0; i < ms->n_planes; i++) > > > + malidp_set_plane_base_addr(fb, mp, i); > > > > > > malidp_de_set_mmu_control(mp, ms); > > > > > > @@ -657,6 +734,8 @@ static void malidp_de_plane_update(struct drm_plane *plane, > > > mp->layer->base + MALIDP550_LS_R1_IN_SIZE); > > > } > > > > > > + malidp_de_set_plane_afbc(plane); > > > > I feel like this function call should be done only if (fb->modifier) is > > true. > We need to call this function even is fb->modifier = 0. Please refer > to the following snippet in malidp_de_set_plane_afbc() > > if (!fb->modifier) { > malidp_hw_write(mp->hwdev, 0, mp->layer->afbc_decoder_offset); > return; > } Right, that is to reset the afbc_decoder_offset, correct? Still, it would look a bit more obvious if the code looked like this here: if (!fb->modifier) malidp_hw_write(mp->hwdev, 0, mp->layer->afbc_decoder_offset); else malidp_de_set_plane_afbc(plane); > I will prefer to keep all the AFBC register configuration in a single > function. But I agree, it is probably easier to keep them all together. Please discard my previous comment. Best regards, Liviu > > Thanks, > Ayan Kumar Halder > > > > > + > > > /* first clear the rotation bits */ > > > val = malidp_hw_read(mp->hwdev, mp->layer->base + MALIDP_LAYER_CONTROL); > > > val &= ~LAYER_ROT_MASK; > > > @@ -674,7 +753,7 @@ static void malidp_de_plane_update(struct drm_plane *plane, > > > > > > if (state->alpha != DRM_BLEND_ALPHA_OPAQUE) { > > > val |= LAYER_COMP_PLANE; > > > - } else if (state->fb->format->has_alpha) { > > > + } else if (format_has_alpha) { > > > > This change has nothing to do with AFBC, it should not be in this patch. > > > > > /* We only care about blend mode if the format has alpha */ > > > switch (pixel_alpha) { > > > case DRM_MODE_BLEND_PREMULTI: > > > diff --git a/drivers/gpu/drm/arm/malidp_regs.h b/drivers/gpu/drm/arm/malidp_regs.h > > > index 7ce3e14..a0dd6e1 100644 > > > --- a/drivers/gpu/drm/arm/malidp_regs.h > > > +++ b/drivers/gpu/drm/arm/malidp_regs.h > > > @@ -198,10 +198,13 @@ > > > #define MALIDP500_LV_YUV2RGB ((s16)(-0xB8)) > > > #define MALIDP500_DE_LV_BASE 0x00100 > > > #define MALIDP500_DE_LV_PTR_BASE 0x00124 > > > +#define MALIDP500_DE_LV_AD_CTRL 0x00400 > > > #define MALIDP500_DE_LG1_BASE 0x00200 > > > #define MALIDP500_DE_LG1_PTR_BASE 0x0021c > > > +#define MALIDP500_DE_LG1_AD_CTRL 0x0040c > > > #define MALIDP500_DE_LG2_BASE 0x00300 > > > #define MALIDP500_DE_LG2_PTR_BASE 0x0031c > > > +#define MALIDP500_DE_LG2_AD_CTRL 0x00418 > > > #define MALIDP500_SE_BASE 0x00c00 > > > #define MALIDP500_SE_CONTROL 0x00c0c > > > #define MALIDP500_SE_MEMWRITE_OUT_SIZE 0x00c2c > > > @@ -228,10 +231,13 @@ > > > #define MALIDP550_LV_YUV2RGB 0x00084 > > > #define MALIDP550_DE_LV1_BASE 0x00100 > > > #define MALIDP550_DE_LV1_PTR_BASE 0x00124 > > > +#define MALIDP550_DE_LV1_AD_CTRL 0x001B8 > > > #define MALIDP550_DE_LV2_BASE 0x00200 > > > #define MALIDP550_DE_LV2_PTR_BASE 0x00224 > > > +#define MALIDP550_DE_LV2_AD_CTRL 0x002B8 > > > #define MALIDP550_DE_LG_BASE 0x00300 > > > #define MALIDP550_DE_LG_PTR_BASE 0x0031c > > > +#define MALIDP550_DE_LG_AD_CTRL 0x00330 > > > #define MALIDP550_DE_LS_BASE 0x00400 > > > #define MALIDP550_DE_LS_PTR_BASE 0x0042c > > > #define MALIDP550_DE_PERF_BASE 0x00500 > > > @@ -258,6 +264,20 @@ > > > #define MALIDP_MMU_CTRL_PX_PS(x) (1 << (8 + (x))) > > > #define MALIDP_MMU_CTRL_PP_NUM_REQ(x) (((x) & 0x7f) << 12) > > > > > > +/* AFBC register offsets relative to MALIDPXXX_DE_LX_AD_CTRL */ > > > +/* The following register offsets are common for DP500, DP550 and DP650 */ > > > +#define MALIDP_AD_CROP_H 0x4 > > > +#define MALIDP_AD_CROP_V 0x8 > > > +#define MALIDP_AD_END_PTR_LOW 0xc > > > +#define MALIDP_AD_END_PTR_HIGH 0x10 > > > + > > > +/* AFBC decoder Registers */ > > > +#define MALIDP_AD_EN BIT(0) > > > +#define MALIDP_AD_YTR BIT(4) > > > +#define MALIDP_AD_BS BIT(8) > > > +#define MALIDP_AD_CROP_RIGHT_OFFSET 16 > > > +#define MALIDP_AD_CROP_BOTTOM_OFFSET 16 > > > + > > > /* > > > * Starting with DP550 the register map blocks has been standardised to the > > > * following layout: > > > -- > > > 2.7.4 > > > > > > > Best regards, > > Liviu > > > > > > -- > > ==================== > > | I would like to | > > | fix the world, | > > | but they're not | > > | giving me the | > > \ source code! / > > --------------- > > ??\_(???)_/?? > > _______________________________________________ > > dri-devel mailing list > > dri-devel@lists.freedesktop.org > > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- ==================== | I would like to | | fix the world, | | but they're not | | giving me the | \ source code! / --------------- ¯\_(ツ)_/¯