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Message-ID: <CAF6AEGt2K54vOWRMEckYCYx2pOndT4vUePRM8SxM9T3hCn2ctQ@mail.gmail.com>
Date: Mon, 18 Nov 2019 09:08:43 -0800
From: Rob Clark <robdclark@...il.com>
To: Kalyan Thota <kalyan_t@...eaurora.org>
Cc: dri-devel <dri-devel@...ts.freedesktop.org>,
linux-arm-msm <linux-arm-msm@...r.kernel.org>,
freedreno <freedreno@...ts.freedesktop.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Sean Paul <seanpaul@...omium.org>,
"Kristian H. Kristensen" <hoegsberg@...omium.org>,
dhar@...eaurora.org, Jeykumar Sankaran <jsanka@...eaurora.org>,
Chandan Uddaraju <chandanu@...eaurora.org>,
travitej@...eaurora.org, nganji@...eaurora.org
Subject: Re: [PATCH v1] msm:disp:dpu1: setup display datapath for SC7180 target
On Mon, Nov 18, 2019 at 3:44 AM Kalyan Thota <kalyan_t@...eaurora.org> wrote:
>
> Add changes to setup display datapath on SC7180 target
>
> changes in v1:
> 1) add changes to support ctl_active on SC7180 target
> 2) while selecting the number of mixers in the topology
> consider the interface width.
>
> This patch has dependency on the below series
>
> https://patchwork.kernel.org/patch/11249423/
>
> Signed-off-by: Kalyan Thota <kalyan_t@...eaurora.org>
> Signed-off-by: Shubhashree Dhar <dhar@...eaurora.org>
> Signed-off-by: Raviteja Tamatam <travitej@...eaurora.org>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 4 +-
> .../gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c | 21 +++++-
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 1 +
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 84 +++++++++++++++++++++-
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h | 24 +++++++
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 28 ++++++++
> drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h | 6 ++
> 7 files changed, 161 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index d82ea99..96c48a8 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -58,7 +58,7 @@
>
> #define IDLE_SHORT_TIMEOUT 1
>
> -#define MAX_VDISPLAY_SPLIT 1080
> +#define MAX_HDISPLAY_SPLIT 1080
>
> /* timeout in frames waiting for frame done */
> #define DPU_ENCODER_FRAME_DONE_TIMEOUT_FRAMES 5
> @@ -535,7 +535,7 @@ static struct msm_display_topology dpu_encoder_get_topology(
> intf_count++;
>
> /* User split topology for width > 1080 */
> - topology.num_lm = (mode->vdisplay > MAX_VDISPLAY_SPLIT) ? 2 : 1;
> + topology.num_lm = (mode->hdisplay > MAX_HDISPLAY_SPLIT) ? 2 : 1;
could you spit this fix into it's own patch (and I guess s/User/Use/
in the comment
I guess width > 1080 actually works ok? IIRC mdp5 switched to split
at 2k. Or is it advantages to use split path (with presumably lower
clocks)? I wonder if there are scenarios where we want to use split
topology unless there is an external display connected, or depending
on the resolution of the external display?
BR,
-R
> topology.num_enc = 0;
> topology.num_intf = intf_count;
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> index b9c84fb..8cc8ad12 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_vid.c
> @@ -280,6 +280,14 @@ static void dpu_encoder_phys_vid_setup_timing_engine(
> phys_enc->hw_intf->ops.setup_timing_gen(phys_enc->hw_intf,
> &timing_params, fmt);
> phys_enc->hw_ctl->ops.setup_intf_cfg(phys_enc->hw_ctl, &intf_cfg);
> +
> + /* setup which pp blk will connect to this intf */
> + if (phys_enc->hw_intf->ops.bind_pingpong_blk)
> + phys_enc->hw_intf->ops.bind_pingpong_blk(
> + phys_enc->hw_intf,
> + true,
> + phys_enc->hw_pp->idx);
> +
> spin_unlock_irqrestore(phys_enc->enc_spinlock, lock_flags);
>
> programmable_fetch_config(phys_enc, &timing_params);
> @@ -435,6 +443,7 @@ static void dpu_encoder_phys_vid_enable(struct dpu_encoder_phys *phys_enc)
> {
> struct dpu_hw_ctl *ctl;
> u32 flush_mask = 0;
> + u32 intf_flush_mask = 0;
>
> ctl = phys_enc->hw_ctl;
>
> @@ -459,10 +468,18 @@ static void dpu_encoder_phys_vid_enable(struct dpu_encoder_phys *phys_enc)
> ctl->ops.get_bitmask_intf(ctl, &flush_mask, phys_enc->hw_intf->idx);
> ctl->ops.update_pending_flush(ctl, flush_mask);
>
> + if (ctl->ops.get_bitmask_active_intf)
> + ctl->ops.get_bitmask_active_intf(ctl, &intf_flush_mask,
> + phys_enc->hw_intf->idx);
> +
> + if (ctl->ops.update_pending_intf_flush)
> + ctl->ops.update_pending_intf_flush(ctl, intf_flush_mask);
> +
> skip_flush:
> DPU_DEBUG_VIDENC(phys_enc,
> - "update pending flush ctl %d flush_mask %x\n",
> - ctl->idx - CTL_0, flush_mask);
> + "update pending flush ctl %d flush_mask 0%x intf_mask 0x%x\n",
> + ctl->idx - CTL_0, flush_mask, intf_flush_mask);
> +
>
> /* ctl_flush & timing engine enable will be triggered by framework */
> if (phys_enc->enable_state == DPU_ENC_DISABLED)
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> index 1d2ea93..1f2ac6e 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> @@ -374,6 +374,7 @@
> {\
> .name = _name, .id = _id, \
> .base = _base, .len = 0x280, \
> + .features = BIT(DPU_CTL_ACTIVE_CFG), \
> .type = _type, \
> .controller_id = _ctrl_id, \
> .prog_fetch_lines_worst_case = 24 \
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
> index 179e8d5..2ce4b5a 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c
> @@ -22,11 +22,15 @@
> #define CTL_PREPARE 0x0d0
> #define CTL_SW_RESET 0x030
> #define CTL_LAYER_EXTN_OFFSET 0x40
> +#define CTL_INTF_ACTIVE 0x0F4
> +#define CTL_INTF_FLUSH 0x110
> +#define CTL_INTF_MASTER 0x134
>
> #define CTL_MIXER_BORDER_OUT BIT(24)
> #define CTL_FLUSH_MASK_CTL BIT(17)
>
> #define DPU_REG_RESET_TIMEOUT_US 2000
> +#define INTF_IDX 31
>
> static struct dpu_ctl_cfg *_ctl_offset(enum dpu_ctl ctl,
> struct dpu_mdss_cfg *m,
> @@ -100,11 +104,27 @@ static inline void dpu_hw_ctl_update_pending_flush(struct dpu_hw_ctl *ctx,
> ctx->pending_flush_mask |= flushbits;
> }
>
> +static inline void dpu_hw_ctl_update_pending_intf_flush(struct dpu_hw_ctl *ctx,
> + u32 flushbits)
> +{
> + ctx->pending_intf_flush_mask |= flushbits;
> +}
> +
> static u32 dpu_hw_ctl_get_pending_flush(struct dpu_hw_ctl *ctx)
> {
> return ctx->pending_flush_mask;
> }
>
> +static inline void dpu_hw_ctl_trigger_flush_v1(struct dpu_hw_ctl *ctx)
> +{
> +
> + if (ctx->pending_flush_mask & BIT(INTF_IDX))
> + DPU_REG_WRITE(&ctx->hw, CTL_INTF_FLUSH,
> + ctx->pending_intf_flush_mask);
> +
> + DPU_REG_WRITE(&ctx->hw, CTL_FLUSH, ctx->pending_flush_mask);
> +}
> +
> static inline void dpu_hw_ctl_trigger_flush(struct dpu_hw_ctl *ctx)
> {
> trace_dpu_hw_ctl_trigger_pending_flush(ctx->pending_flush_mask,
> @@ -222,6 +242,36 @@ static int dpu_hw_ctl_get_bitmask_intf(struct dpu_hw_ctl *ctx,
> return 0;
> }
>
> +static int dpu_hw_ctl_get_bitmask_intf_v1(struct dpu_hw_ctl *ctx,
> + u32 *flushbits, enum dpu_intf intf)
> +{
> + switch (intf) {
> + case INTF_0:
> + case INTF_1:
> + *flushbits |= BIT(31);
> + break;
> + default:
> + return 0;
> + }
> + return 0;
> +}
> +
> +static int dpu_hw_ctl_active_get_bitmask_intf(struct dpu_hw_ctl *ctx,
> + u32 *flushbits, enum dpu_intf intf)
> +{
> + switch (intf) {
> + case INTF_0:
> + *flushbits |= BIT(0);
> + break;
> + case INTF_1:
> + *flushbits |= BIT(1);
> + break;
> + default:
> + return 0;
> + }
> + return 0;
> +}
> +
> static u32 dpu_hw_ctl_poll_reset_status(struct dpu_hw_ctl *ctx, u32 timeout_us)
> {
> struct dpu_hw_blk_reg_map *c = &ctx->hw;
> @@ -422,6 +472,24 @@ static void dpu_hw_ctl_setup_blendstage(struct dpu_hw_ctl *ctx,
> DPU_REG_WRITE(c, CTL_LAYER_EXT3(lm), mixercfg_ext3);
> }
>
> +
> +static void dpu_hw_ctl_intf_cfg_v1(struct dpu_hw_ctl *ctx,
> + struct dpu_hw_intf_cfg *cfg)
> +{
> + struct dpu_hw_blk_reg_map *c = &ctx->hw;
> + u32 intf_active = 0;
> + u32 mode_sel = 0;
> +
> + if (cfg->intf_mode_sel == DPU_CTL_MODE_SEL_CMD)
> + mode_sel |= BIT(17);
> +
> + intf_active = DPU_REG_READ(c, CTL_INTF_ACTIVE);
> + intf_active |= BIT(cfg->intf - INTF_0);
> +
> + DPU_REG_WRITE(c, CTL_TOP, mode_sel);
> + DPU_REG_WRITE(c, CTL_INTF_ACTIVE, intf_active);
> +}
> +
> static void dpu_hw_ctl_intf_cfg(struct dpu_hw_ctl *ctx,
> struct dpu_hw_intf_cfg *cfg)
> {
> @@ -455,21 +523,31 @@ static void dpu_hw_ctl_intf_cfg(struct dpu_hw_ctl *ctx,
> static void _setup_ctl_ops(struct dpu_hw_ctl_ops *ops,
> unsigned long cap)
> {
> + if (cap & BIT(DPU_CTL_ACTIVE_CFG)) {
> + ops->trigger_flush = dpu_hw_ctl_trigger_flush_v1;
> + ops->setup_intf_cfg = dpu_hw_ctl_intf_cfg_v1;
> + ops->get_bitmask_intf = dpu_hw_ctl_get_bitmask_intf_v1;
> + ops->get_bitmask_active_intf =
> + dpu_hw_ctl_active_get_bitmask_intf;
> + ops->update_pending_intf_flush =
> + dpu_hw_ctl_update_pending_intf_flush;
> + } else {
> + ops->trigger_flush = dpu_hw_ctl_trigger_flush;
> + ops->setup_intf_cfg = dpu_hw_ctl_intf_cfg;
> + ops->get_bitmask_intf = dpu_hw_ctl_get_bitmask_intf;
> + }
> ops->clear_pending_flush = dpu_hw_ctl_clear_pending_flush;
> ops->update_pending_flush = dpu_hw_ctl_update_pending_flush;
> ops->get_pending_flush = dpu_hw_ctl_get_pending_flush;
> - ops->trigger_flush = dpu_hw_ctl_trigger_flush;
> ops->get_flush_register = dpu_hw_ctl_get_flush_register;
> ops->trigger_start = dpu_hw_ctl_trigger_start;
> ops->trigger_pending = dpu_hw_ctl_trigger_pending;
> - ops->setup_intf_cfg = dpu_hw_ctl_intf_cfg;
> ops->reset = dpu_hw_ctl_reset_control;
> ops->wait_reset_status = dpu_hw_ctl_wait_reset_status;
> ops->clear_all_blendstages = dpu_hw_ctl_clear_all_blendstages;
> ops->setup_blendstage = dpu_hw_ctl_setup_blendstage;
> ops->get_bitmask_sspp = dpu_hw_ctl_get_bitmask_sspp;
> ops->get_bitmask_mixer = dpu_hw_ctl_get_bitmask_mixer;
> - ops->get_bitmask_intf = dpu_hw_ctl_get_bitmask_intf;
> };
>
> static struct dpu_hw_blk_ops dpu_hw_ops;
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
> index d3ae939..1e3973c 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.h
> @@ -91,6 +91,15 @@ struct dpu_hw_ctl_ops {
> u32 flushbits);
>
> /**
> + * OR in the given flushbits to the cached pending_intf_flush_mask
> + * No effect on hardware
> + * @ctx : ctl path ctx pointer
> + * @flushbits : module flushmask
> + */
> + void (*update_pending_intf_flush)(struct dpu_hw_ctl *ctx,
> + u32 flushbits);
> +
> + /**
> * Write the value of the pending_flush_mask to hardware
> * @ctx : ctl path ctx pointer
> */
> @@ -130,11 +139,24 @@ struct dpu_hw_ctl_ops {
> uint32_t (*get_bitmask_mixer)(struct dpu_hw_ctl *ctx,
> enum dpu_lm blk);
>
> + /**
> + * Query the value of the intf flush mask
> + * No effect on hardware
> + * @ctx : ctl path ctx pointer
> + */
> int (*get_bitmask_intf)(struct dpu_hw_ctl *ctx,
> u32 *flushbits,
> enum dpu_intf blk);
>
> /**
> + * Query the value of the intf active flush mask
> + * No effect on hardware
> + * @ctx : ctl path ctx pointer
> + */
> + int (*get_bitmask_active_intf)(struct dpu_hw_ctl *ctx,
> + u32 *flushbits, enum dpu_intf blk);
> +
> + /**
> * Set all blend stages to disabled
> * @ctx : ctl path ctx pointer
> */
> @@ -159,6 +181,7 @@ struct dpu_hw_ctl_ops {
> * @mixer_count: number of mixers
> * @mixer_hw_caps: mixer hardware capabilities
> * @pending_flush_mask: storage for pending ctl_flush managed via ops
> + * @pending_intf_flush_mask: pending INTF flush
> * @ops: operation list
> */
> struct dpu_hw_ctl {
> @@ -171,6 +194,7 @@ struct dpu_hw_ctl {
> int mixer_count;
> const struct dpu_lm_cfg *mixer_hw_caps;
> u32 pending_flush_mask;
> + u32 pending_intf_flush_mask;
>
> /* ops */
> struct dpu_hw_ctl_ops ops;
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> index dcd87cd..eff5e6a 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> @@ -56,6 +56,8 @@
> #define INTF_FRAME_COUNT 0x0AC
> #define INTF_LINE_COUNT 0x0B0
>
> +#define INTF_MUX 0x25C
> +
> static struct dpu_intf_cfg *_intf_offset(enum dpu_intf intf,
> struct dpu_mdss_cfg *m,
> void __iomem *addr,
> @@ -218,6 +220,30 @@ static void dpu_hw_intf_setup_prg_fetch(
> DPU_REG_WRITE(c, INTF_CONFIG, fetch_enable);
> }
>
> +static void dpu_hw_intf_bind_pingpong_blk(
> + struct dpu_hw_intf *intf,
> + bool enable,
> + const enum dpu_pingpong pp)
> +{
> + struct dpu_hw_blk_reg_map *c;
> + u32 mux_cfg;
> +
> + if (!intf)
> + return;
> +
> + c = &intf->hw;
> +
> + mux_cfg = DPU_REG_READ(c, INTF_MUX);
> + mux_cfg &= ~0xf;
> +
> + if (enable)
> + mux_cfg |= (pp - PINGPONG_0) & 0x7;
> + else
> + mux_cfg |= 0xf;
> +
> + DPU_REG_WRITE(c, INTF_MUX, mux_cfg);
> +}
> +
> static void dpu_hw_intf_get_status(
> struct dpu_hw_intf *intf,
> struct intf_status *s)
> @@ -254,6 +280,8 @@ static void _setup_intf_ops(struct dpu_hw_intf_ops *ops,
> ops->get_status = dpu_hw_intf_get_status;
> ops->enable_timing = dpu_hw_intf_enable_timing_engine;
> ops->get_line_count = dpu_hw_intf_get_line_count;
> + if (cap & BIT(DPU_CTL_ACTIVE_CFG))
> + ops->bind_pingpong_blk = dpu_hw_intf_bind_pingpong_blk;
> }
>
> static struct dpu_hw_blk_ops dpu_hw_ops;
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
> index b03acc2..a1e0ef3 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.h
> @@ -52,6 +52,8 @@ struct intf_status {
> * @ enable_timing: enable/disable timing engine
> * @ get_status: returns if timing engine is enabled or not
> * @ get_line_count: reads current vertical line counter
> + * @bind_pingpong_blk: enable/disable the connection with pingpong which will
> + * feed pixels to this interface
> */
> struct dpu_hw_intf_ops {
> void (*setup_timing_gen)(struct dpu_hw_intf *intf,
> @@ -68,6 +70,10 @@ struct dpu_hw_intf_ops {
> struct intf_status *status);
>
> u32 (*get_line_count)(struct dpu_hw_intf *intf);
> +
> + void (*bind_pingpong_blk)(struct dpu_hw_intf *intf,
> + bool enable,
> + const enum dpu_pingpong pp);
> };
>
> struct dpu_hw_intf {
> --
> 1.9.1
>
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