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Message-ID: <20230623155314.GY2112@pendragon.ideasonboard.com>
Date: Fri, 23 Jun 2023 18:53:14 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Thomas Zimmermann <tzimmermann@...e.de>,
Magnus Damm <magnus.damm@...il.com>,
dri-devel@...ts.freedesktop.org, linux-renesas-soc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 21/39] drm: renesas: shmobile: Use struct videomode in
platform data
Hi Geert,
Thank you for the patch.
On Thu, Jun 22, 2023 at 11:21:33AM +0200, Geert Uytterhoeven wrote:
> From: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
>
> Replace the drm_mode_modeinfo field with videomode that includes more
> signal polarity flags. This simplifies driver handling of panel modes
> and prepares for DT support.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> [geert: Simplify]
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> ---
> Changes compared to Laurent's original:
> - Rebase,
> - Fix build,
> - Remove unneeded {width,height}_mm intermediaries from
> shmob_drm_connector,
> - Replace embedded videomode by a const pointer to pdata.
> ---
> .../gpu/drm/renesas/shmobile/shmob_drm_crtc.c | 35 ++++++++-----------
> .../gpu/drm/renesas/shmobile/shmob_drm_crtc.h | 3 ++
> include/linux/platform_data/shmob_drm.h | 11 ++----
> 3 files changed, 19 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
> index 291b3a5014c24f08..5328910ebe09c832 100644
> --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
> +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c
> @@ -23,6 +23,8 @@
> #include <drm/drm_simple_kms_helper.h>
> #include <drm/drm_vblank.h>
>
> +#include <video/videomode.h>
> +
> #include "shmob_drm_crtc.h"
> #include "shmob_drm_drv.h"
> #include "shmob_drm_kms.h"
> @@ -64,18 +66,16 @@ static void shmob_drm_crtc_setup_geometry(struct shmob_drm_crtc *scrtc)
> {
> struct drm_crtc *crtc = &scrtc->crtc;
> struct shmob_drm_device *sdev = to_shmob_device(crtc->dev);
> - const struct shmob_drm_interface_data *idata = &sdev->pdata->iface;
> + enum display_flags dpy_flags = sdev->connector.mode->flags;
> const struct drm_display_mode *mode = &crtc->mode;
> u32 value;
>
> value = sdev->ldmt1r
> | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : LDMT1R_VPOL)
> | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : LDMT1R_HPOL)
> - | ((idata->flags & SHMOB_DRM_IFACE_FL_DWPOL) ? LDMT1R_DWPOL : 0)
> - | ((idata->flags & SHMOB_DRM_IFACE_FL_DIPOL) ? LDMT1R_DIPOL : 0)
> - | ((idata->flags & SHMOB_DRM_IFACE_FL_DAPOL) ? LDMT1R_DAPOL : 0)
> - | ((idata->flags & SHMOB_DRM_IFACE_FL_HSCNT) ? LDMT1R_HSCNT : 0)
> - | ((idata->flags & SHMOB_DRM_IFACE_FL_DWCNT) ? LDMT1R_DWCNT : 0);
> + | ((dpy_flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) ? LDMT1R_DWPOL : 0)
> + | ((dpy_flags & DISPLAY_FLAGS_DE_LOW) ? LDMT1R_DIPOL : 0);
> +
> lcdc_write(sdev, LDMT1R, value);
>
> value = ((mode->hdisplay / 8) << 16) /* HDCN */
> @@ -581,7 +581,7 @@ static inline struct shmob_drm_connector *to_shmob_connector(struct drm_connecto
>
> static int shmob_drm_connector_get_modes(struct drm_connector *connector)
> {
> - struct shmob_drm_device *sdev = to_shmob_device(connector->dev);
> + struct shmob_drm_connector *scon = to_shmob_connector(connector);
> struct drm_display_mode *mode;
>
> mode = drm_mode_create(connector->dev);
> @@ -589,18 +589,9 @@ static int shmob_drm_connector_get_modes(struct drm_connector *connector)
> return 0;
>
> mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
> - mode->clock = sdev->pdata->panel.mode.clock;
> - mode->hdisplay = sdev->pdata->panel.mode.hdisplay;
> - mode->hsync_start = sdev->pdata->panel.mode.hsync_start;
> - mode->hsync_end = sdev->pdata->panel.mode.hsync_end;
> - mode->htotal = sdev->pdata->panel.mode.htotal;
> - mode->vdisplay = sdev->pdata->panel.mode.vdisplay;
> - mode->vsync_start = sdev->pdata->panel.mode.vsync_start;
> - mode->vsync_end = sdev->pdata->panel.mode.vsync_end;
> - mode->vtotal = sdev->pdata->panel.mode.vtotal;
> - mode->flags = sdev->pdata->panel.mode.flags;
> -
> - drm_mode_set_name(mode);
> +
> + drm_display_mode_from_videomode(scon->mode, mode);
> +
> drm_mode_probed_add(connector, mode);
>
> return 1;
> @@ -634,10 +625,12 @@ static const struct drm_connector_funcs connector_funcs = {
> int shmob_drm_connector_create(struct shmob_drm_device *sdev,
> struct drm_encoder *encoder)
> {
> - struct drm_connector *connector = &sdev->connector.connector;
> + struct shmob_drm_connector *scon = &sdev->connector;
> + struct drm_connector *connector = &scon->connector;
> int ret;
>
> - sdev->connector.encoder = encoder;
> + scon->encoder = encoder;
> + scon->mode = &sdev->pdata->panel.mode;
>
> connector->display_info.width_mm = sdev->pdata->panel.width_mm;
> connector->display_info.height_mm = sdev->pdata->panel.height_mm;
> diff --git a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h
> index bce6926269453b77..f507eaf912e16a22 100644
> --- a/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h
> +++ b/drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.h
> @@ -14,6 +14,8 @@
> #include <drm/drm_connector.h>
> #include <drm/drm_encoder.h>
>
> +#include <video/videomode.h>
> +
> struct drm_pending_vblank_event;
> struct shmob_drm_device;
> struct shmob_drm_format_info;
> @@ -33,6 +35,7 @@ struct shmob_drm_crtc {
> struct shmob_drm_connector {
> struct drm_connector connector;
> struct drm_encoder *encoder;
> + const struct videomode *mode;
> };
>
> int shmob_drm_crtc_create(struct shmob_drm_device *sdev);
> diff --git a/include/linux/platform_data/shmob_drm.h b/include/linux/platform_data/shmob_drm.h
> index b728e24222d99158..f3cb19ff9f818aca 100644
> --- a/include/linux/platform_data/shmob_drm.h
> +++ b/include/linux/platform_data/shmob_drm.h
> @@ -10,7 +10,7 @@
> #ifndef __SHMOB_DRM_H__
> #define __SHMOB_DRM_H__
>
> -#include <drm/drm_mode.h>
> +#include <video/videomode.h>
>
> enum shmob_drm_clk_source {
> SHMOB_DRM_CLK_BUS,
> @@ -32,19 +32,12 @@ enum shmob_drm_interface {
> struct shmob_drm_panel_data {
> unsigned int width_mm; /* Panel width in mm */
> unsigned int height_mm; /* Panel height in mm */
> - struct drm_mode_modeinfo mode;
> + struct videomode mode;
> };
>
> -#define SHMOB_DRM_IFACE_FL_DWPOL (1 << 0) /* Rising edge dot clock data latch */
> -#define SHMOB_DRM_IFACE_FL_DIPOL (1 << 1) /* Active low display enable */
> -#define SHMOB_DRM_IFACE_FL_DAPOL (1 << 2) /* Active low display data */
> -#define SHMOB_DRM_IFACE_FL_HSCNT (1 << 3) /* Disable HSYNC during VBLANK */
> -#define SHMOB_DRM_IFACE_FL_DWCNT (1 << 4) /* Disable dotclock during blanking */
> -
> struct shmob_drm_interface_data {
> enum shmob_drm_interface interface;
> unsigned int clk_div;
> - unsigned int flags;
> };
>
> struct shmob_drm_platform_data {
--
Regards,
Laurent Pinchart
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