From: Sean Paul <seanpaul@chromium.org>
To: Eric Anholt <eric@anholt.net>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/pl111: Fix offset calculation for the primary plane.
Date: Tue, 6 Jun 2017 10:30:30 -0400 [thread overview]
Message-ID: <20170606143030.bpg24pber37ogyal@art_vandelay> (raw)
In-Reply-To: <20170603015733.13266-1-eric@anholt.net>
On Fri, Jun 02, 2017 at 06:57:33PM -0700, Eric Anholt wrote:
> If src_x/y were nonzero, we failed to shift them down by 16 to get the
> pixel offset. The recent CMA helper function gets it right.
>
> Signed-off-by: Eric Anholt <eric@anholt.net>
> Fixes: bed41005e617 ("drm/pl111: Initial drm/kms driver for pl111")
> Reported-by: Mircea Carausu <mircea.carausu@broadcom.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
> ---
> drivers/gpu/drm/pl111/pl111_display.c | 15 ++-------------
> 1 file changed, 2 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c
> index 3e0a4fa73ddb..c6ca4f1bbd49 100644
> --- a/drivers/gpu/drm/pl111/pl111_display.c
> +++ b/drivers/gpu/drm/pl111/pl111_display.c
> @@ -50,17 +50,6 @@ irqreturn_t pl111_irq(int irq, void *data)
> return status;
> }
>
> -static u32 pl111_get_fb_offset(struct drm_plane_state *pstate)
> -{
> - struct drm_framebuffer *fb = pstate->fb;
> - struct drm_gem_cma_object *obj = drm_fb_cma_get_gem_obj(fb, 0);
> -
> - return (obj->paddr +
> - fb->offsets[0] +
> - fb->format->cpp[0] * pstate->src_x +
> - fb->pitches[0] * pstate->src_y);
> -}
> -
> static int pl111_display_check(struct drm_simple_display_pipe *pipe,
> struct drm_plane_state *pstate,
> struct drm_crtc_state *cstate)
> @@ -73,7 +62,7 @@ static int pl111_display_check(struct drm_simple_display_pipe *pipe,
> return -EINVAL;
>
> if (fb) {
> - u32 offset = pl111_get_fb_offset(pstate);
> + u32 offset = drm_fb_cma_get_gem_addr(fb, pstate, 0);
>
> /* FB base address must be dword aligned. */
> if (offset & 3)
> @@ -249,7 +238,7 @@ static void pl111_display_update(struct drm_simple_display_pipe *pipe,
> struct drm_framebuffer *fb = pstate->fb;
>
> if (fb) {
> - u32 addr = pl111_get_fb_offset(pstate);
> + u32 addr = drm_fb_cma_get_gem_addr(fb, pstate, 0);
>
> writel(addr, priv->regs + CLCD_UBAS);
> }
> --
> 2.11.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Sean Paul, Software Engineer, Google / Chromium OS
next prev parent reply other threads:[~2017-06-06 14:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-03 1:57 Eric Anholt
2017-06-06 14:30 ` Sean Paul [this message]
2017-06-07 18:51 ` Eric Anholt
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