This patch simplifies videomode related Kconfig and Makefile. After this patch, there's only one non-user selectable Kconfig option left, VIDEOMODE_HELPERS. The reasons for the change:

* Videomode helper functions are not something that should be shown in the kernel configuration options. The related code should just be included if it's needed, i.e. selected by drivers using videomode.

* There's no need to have separate Kconfig options for videomode and display_timing. First of all, the amount of code for both is quite small. Second, videomode depends on display_timing, and display_timing in itself is not really useful, so both would be included in any case.

* CONFIG_VIDEOMODE is a bit vague name, and CONFIG_VIDEOMODE_HELPERS describes better what's included.

Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Cc: Steffen Trumtrar s.trumtrar@pengutronix.de Acked-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/drm_modes.c | 8 ++++---- drivers/gpu/drm/tilcdc/Kconfig | 3 +-- drivers/video/Kconfig | 22 ++-------------------- drivers/video/Makefile | 8 ++++---- drivers/video/fbmon.c | 8 ++++---- 5 files changed, 15 insertions(+), 34 deletions(-)

diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 04fa6f1..0698c0e 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -506,7 +506,7 @@ drm_gtf_mode(struct drm_device *dev, int hdisplay, int vdisplay, int vrefresh, } EXPORT_SYMBOL(drm_gtf_mode);

-#if IS_ENABLED(CONFIG_VIDEOMODE) +#ifdef CONFIG_VIDEOMODE_HELPERS int drm_display_mode_from_videomode(const struct videomode *vm, struct drm_display_mode *dmode) { @@ -540,9 +540,8 @@ int drm_display_mode_from_videomode(const struct videomode *vm, return 0; } EXPORT_SYMBOL_GPL(drm_display_mode_from_videomode); -#endif

-#if IS_ENABLED(CONFIG_OF_VIDEOMODE) +#ifdef CONFIG_OF /** * of_get_drm_display_mode - get a drm_display_mode from devicetree * @np: device_node with the timing specification @@ -572,7 +571,8 @@ int of_get_drm_display_mode(struct device_node *np, return 0; } EXPORT_SYMBOL_GPL(of_get_drm_display_mode); -#endif +#endif /* CONFIG_OF */ +#endif /* CONFIG_VIDEOMODE_HELPERS */

/** * drm_mode_set_name - set the name on a mode diff --git a/drivers/gpu/drm/tilcdc/Kconfig b/drivers/gpu/drm/tilcdc/Kconfig index d24d040..e461e99 100644 --- a/drivers/gpu/drm/tilcdc/Kconfig +++ b/drivers/gpu/drm/tilcdc/Kconfig @@ -4,8 +4,7 @@ config DRM_TILCDC select DRM_KMS_HELPER select DRM_KMS_CMA_HELPER select DRM_GEM_CMA_HELPER - select OF_VIDEOMODE - select OF_DISPLAY_TIMING + select VIDEOMODE_HELPERS select BACKLIGHT_CLASS_DEVICE help Choose this option if you have an TI SoC with LCDC display diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig index 4c1546f..2a81b11 100644 --- a/drivers/video/Kconfig +++ b/drivers/video/Kconfig @@ -31,26 +31,8 @@ config VIDEO_OUTPUT_CONTROL This framework adds support for low-level control of the video output switch.

-config DISPLAY_TIMING - bool - -config VIDEOMODE - bool - -config OF_DISPLAY_TIMING - bool "Enable device tree display timing support" - depends on OF - select DISPLAY_TIMING - help - helper to parse display timings from the devicetree - -config OF_VIDEOMODE - bool "Enable device tree videomode support" - depends on OF - select VIDEOMODE - select OF_DISPLAY_TIMING - help - helper to get videomodes from the devicetree +config VIDEOMODE_HELPERS + bool

config HDMI bool diff --git a/drivers/video/Makefile b/drivers/video/Makefile index 9df3873..e414378 100644 --- a/drivers/video/Makefile +++ b/drivers/video/Makefile @@ -171,7 +171,7 @@ obj-$(CONFIG_FB_VIRTUAL) += vfb.o

#video output switch sysfs driver obj-$(CONFIG_VIDEO_OUTPUT_CONTROL) += output.o -obj-$(CONFIG_DISPLAY_TIMING) += display_timing.o -obj-$(CONFIG_OF_DISPLAY_TIMING) += of_display_timing.o -obj-$(CONFIG_VIDEOMODE) += videomode.o -obj-$(CONFIG_OF_VIDEOMODE) += of_videomode.o +obj-$(CONFIG_VIDEOMODE_HELPERS) += display_timing.o videomode.o +ifeq ($(CONFIG_OF),y) +obj-$(CONFIG_VIDEOMODE_HELPERS) += of_display_timing.o of_videomode.o +endif diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c index 94ad0f7..368cedf 100644 --- a/drivers/video/fbmon.c +++ b/drivers/video/fbmon.c @@ -1376,7 +1376,7 @@ int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, struct fb_inf return err; }

-#if IS_ENABLED(CONFIG_VIDEOMODE) +#ifdef CONFIG_VIDEOMODE_HELPERS int fb_videomode_from_videomode(const struct videomode *vm, struct fb_videomode *fbmode) { @@ -1424,9 +1424,8 @@ int fb_videomode_from_videomode(const struct videomode *vm, return 0; } EXPORT_SYMBOL_GPL(fb_videomode_from_videomode); -#endif

-#if IS_ENABLED(CONFIG_OF_VIDEOMODE) +#ifdef CONFIG_OF static inline void dump_fb_videomode(const struct fb_videomode *m) { pr_debug("fb_videomode = %ux%u@%uHz (%ukHz) %u %u %u %u %u %u %u %u %u\n", @@ -1465,7 +1464,8 @@ int of_get_fb_videomode(struct device_node *np, struct fb_videomode *fb, return 0; } EXPORT_SYMBOL_GPL(of_get_fb_videomode); -#endif +#endif /* CONFIG_OF */ +#endif /* CONFIG_VIDEOMODE_HELPERS */

#else int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var)

Instead of having plain defines for the videomode's flags, add an enum for the flags. This makes the flags clearer to use, as the enum tells which values can be used with the flags field.

Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Cc: Steffen Trumtrar s.trumtrar@pengutronix.de --- include/video/display_timing.h | 28 +++++++++++++++++----------- include/video/videomode.h | 2 +- 2 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/include/video/display_timing.h b/include/video/display_timing.h index a8a4be5..b63471d 100644 --- a/include/video/display_timing.h +++ b/include/video/display_timing.h @@ -12,16 +12,22 @@ #include <linux/bitops.h> #include <linux/types.h>

-#define DISPLAY_FLAGS_HSYNC_LOW BIT(0) -#define DISPLAY_FLAGS_HSYNC_HIGH BIT(1) -#define DISPLAY_FLAGS_VSYNC_LOW BIT(2) -#define DISPLAY_FLAGS_VSYNC_HIGH BIT(3) -#define DISPLAY_FLAGS_DE_LOW BIT(4) /* data enable flag */ -#define DISPLAY_FLAGS_DE_HIGH BIT(5) -#define DISPLAY_FLAGS_PIXDATA_POSEDGE BIT(6) /* drive data on pos. edge */ -#define DISPLAY_FLAGS_PIXDATA_NEGEDGE BIT(7) /* drive data on neg. edge */ -#define DISPLAY_FLAGS_INTERLACED BIT(8) -#define DISPLAY_FLAGS_DOUBLESCAN BIT(9) +enum display_flags { + DISPLAY_FLAGS_HSYNC_LOW = BIT(0), + DISPLAY_FLAGS_HSYNC_HIGH = BIT(1), + DISPLAY_FLAGS_VSYNC_LOW = BIT(2), + DISPLAY_FLAGS_VSYNC_HIGH = BIT(3), + + /* data enable flag */ + DISPLAY_FLAGS_DE_LOW = BIT(4), + DISPLAY_FLAGS_DE_HIGH = BIT(5), + /* drive data on pos. edge */ + DISPLAY_FLAGS_PIXDATA_POSEDGE = BIT(6), + /* drive data on neg. edge */ + DISPLAY_FLAGS_PIXDATA_NEGEDGE = BIT(7), + DISPLAY_FLAGS_INTERLACED = BIT(8), + DISPLAY_FLAGS_DOUBLESCAN = BIT(9), +};

/* * A single signal can be specified via a range of minimal and maximal values @@ -69,7 +75,7 @@ struct display_timing { struct timing_entry vback_porch; /* ver. back porch */ struct timing_entry vsync_len; /* ver. sync len */

- unsigned int flags; /* display flags */ + enum display_flags flags; /* display flags */ };

/* diff --git a/include/video/videomode.h b/include/video/videomode.h index f4ae6ed..8b12e60 100644 --- a/include/video/videomode.h +++ b/include/video/videomode.h @@ -29,7 +29,7 @@ struct videomode { u32 vback_porch; u32 vsync_len;

- unsigned int flags; /* display flags */ + enum display_flags flags; /* display flags */ };

/**

We currently have videomode_from_timing(), which takes one display_timing entry from display_timings.

To make it easier to use display_timing without display_timings, this patch renames videomode_from_timing() to videomode_from_timings(), and adds a new videomode_from_timing() which just converts a given display_timing to videomode.

Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Cc: Steffen Trumtrar s.trumtrar@pengutronix.de --- drivers/gpu/drm/tilcdc/tilcdc_panel.c | 2 +- drivers/video/of_videomode.c | 2 +- drivers/video/videomode.c | 25 ++++++++++++++++--------- include/video/videomode.h | 15 +++++++++++++-- 4 files changed, 31 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c index 580b74e..90ee497 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c @@ -173,7 +173,7 @@ static int panel_connector_get_modes(struct drm_connector *connector) struct drm_display_mode *mode = drm_mode_create(dev); struct videomode vm;

- if (videomode_from_timing(timings, &vm, i)) + if (videomode_from_timings(timings, &vm, i)) break;

drm_display_mode_from_videomode(&vm, mode); diff --git a/drivers/video/of_videomode.c b/drivers/video/of_videomode.c index 5b8066c..111c2d1 100644 --- a/drivers/video/of_videomode.c +++ b/drivers/video/of_videomode.c @@ -43,7 +43,7 @@ int of_get_videomode(struct device_node *np, struct videomode *vm, if (index == OF_USE_NATIVE_MODE) index = disp->native_mode;

- ret = videomode_from_timing(disp, vm, index); + ret = videomode_from_timings(disp, vm, index); if (ret) return ret;

diff --git a/drivers/video/videomode.c b/drivers/video/videomode.c index a3d95f2..df375c9 100644 --- a/drivers/video/videomode.c +++ b/drivers/video/videomode.c @@ -11,15 +11,9 @@ #include <video/display_timing.h> #include <video/videomode.h>

-int videomode_from_timing(const struct display_timings *disp, - struct videomode *vm, unsigned int index) +void videomode_from_timing(const struct display_timing *dt, + struct videomode *vm) { - struct display_timing *dt; - - dt = display_timings_get(disp, index); - if (!dt) - return -EINVAL; - vm->pixelclock = dt->pixelclock.typ; vm->hactive = dt->hactive.typ; vm->hfront_porch = dt->hfront_porch.typ; @@ -32,7 +26,20 @@ int videomode_from_timing(const struct display_timings *disp, vm->vsync_len = dt->vsync_len.typ;

vm->flags = dt->flags; +} +EXPORT_SYMBOL_GPL(videomode_from_timing); + +int videomode_from_timings(const struct display_timings *disp, + struct videomode *vm, unsigned int index) +{ + struct display_timing *dt; + + dt = display_timings_get(disp, index); + if (!dt) + return -EINVAL; + + videomode_from_timing(dt, vm);

return 0; } -EXPORT_SYMBOL_GPL(videomode_from_timing); +EXPORT_SYMBOL_GPL(videomode_from_timings); diff --git a/include/video/videomode.h b/include/video/videomode.h index 8b12e60..3f1049d 100644 --- a/include/video/videomode.h +++ b/include/video/videomode.h @@ -34,14 +34,25 @@ struct videomode {

/** * videomode_from_timing - convert display timing to videomode + * @dt: display_timing structure + * @vm: return value + * + * DESCRIPTION: + * This function converts a struct display_timing to a struct videomode. + */ +void videomode_from_timing(const struct display_timing *dt, + struct videomode *vm); + +/** + * videomode_from_timings - convert one display timings entry to videomode * @disp: structure with all possible timing entries * @vm: return value * @index: index into the list of display timings in devicetree * * DESCRIPTION: - * This function converts a struct display_timing to a struct videomode. + * This function converts one struct display_timing entry to a struct videomode. */ -int videomode_from_timing(const struct display_timings *disp, +int videomode_from_timings(const struct display_timings *disp, struct videomode *vm, unsigned int index);

#endif