On Sat, 07 Jan 2023 19:26:27 +0100, Sam Ravnborg via B4 Submission Endpoint
<devnull+sam.ravnborg.org@xxxxxxxxxx> wrote:
> From: Sam Ravnborg <sam@xxxxxxxxxxxx>
>
> Rework backlight handling to avoid access to the deprecated
> backlight_properties.fb_blank member.
>
> The rework includes removal of get_brightness() operation,
> because there was no read back from HW so no use for it.
>
> Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Cc: Lee Jones <lee@xxxxxxxxxx>
> Cc: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
> Cc: Jingoo Han <jingoohan1@xxxxxxxxx>
> ---
> drivers/video/backlight/omap1_bl.c | 67
> +++++--------------------------------- 1 file changed, 9 insertions(+), 58
> deletions(-)
>
> diff --git a/drivers/video/backlight/omap1_bl.c
> b/drivers/video/backlight/omap1_bl.c index 69a49384b3de..49f37da857e7 100644
> --- a/drivers/video/backlight/omap1_bl.c
> +++ b/drivers/video/backlight/omap1_bl.c
> @@ -20,9 +20,6 @@
> #define OMAPBL_MAX_INTENSITY 0xff
>
> struct omap_backlight {
> - int powermode;
> - int current_intensity;
> -
> struct device *dev;
> struct omap_backlight_config *pdata;
> };
> @@ -37,82 +34,40 @@ static inline void omapbl_send_enable(int enable)
> omap_writeb(enable, OMAP_PWL_CLK_ENABLE);
> }
>
> -static void omapbl_blank(struct omap_backlight *bl, int mode)
> -{
> - if (bl->pdata->set_power)
> - bl->pdata->set_power(bl->dev, mode);
> -
> - switch (mode) {
> - case FB_BLANK_NORMAL:
> - case FB_BLANK_VSYNC_SUSPEND:
> - case FB_BLANK_HSYNC_SUSPEND:
> - case FB_BLANK_POWERDOWN:
> - omapbl_send_intensity(0);
> - omapbl_send_enable(0);
> - break;
> -
> - case FB_BLANK_UNBLANK:
> - omapbl_send_intensity(bl->current_intensity);
> - omapbl_send_enable(1);
> - break;
> - }
> -}
> -
> #ifdef CONFIG_PM_SLEEP
> static int omapbl_suspend(struct device *dev)
> {
> struct backlight_device *bl_dev = dev_get_drvdata(dev);
> - struct omap_backlight *bl = bl_get_data(bl_dev);
>
> - omapbl_blank(bl, FB_BLANK_POWERDOWN);
> + backlight_disable(bl_dev);
> return 0;
> }
>
> static int omapbl_resume(struct device *dev)
> {
> struct backlight_device *bl_dev = dev_get_drvdata(dev);
> - struct omap_backlight *bl = bl_get_data(bl_dev);
>
> - omapbl_blank(bl, bl->powermode);
> + backlight_enable(bl_dev);
> return 0;
> }
> #endif
>
> -static int omapbl_set_power(struct backlight_device *dev, int state)
> -{
> - struct omap_backlight *bl = bl_get_data(dev);
> -
> - omapbl_blank(bl, state);
> - bl->powermode = state;
> -
> - return 0;
> -}
> -
> static int omapbl_update_status(struct backlight_device *dev)
> {
> - struct omap_backlight *bl = bl_get_data(dev);
> + int brightness = backlight_get_brightness(dev);
>
> - if (bl->current_intensity != dev->props.brightness) {
> - if (bl->powermode == FB_BLANK_UNBLANK)
> - omapbl_send_intensity(dev->props.brightness);
> - bl->current_intensity = dev->props.brightness;
> + if (brightness > 0) {
> + omapbl_send_intensity(dev->props.brightness);
> + omapbl_send_enable(1);
> + } else {
> + omapbl_send_intensity(0);
> + omapbl_send_enable(0);
> }
>
> - if (dev->props.fb_blank != bl->powermode)
> - omapbl_set_power(dev, dev->props.fb_blank);
> -
> return 0;
> }
>
> -static int omapbl_get_intensity(struct backlight_device *dev)
> -{
> - struct omap_backlight *bl = bl_get_data(dev);
> -
> - return bl->current_intensity;
> -}
> -
> static const struct backlight_ops omapbl_ops = {
> - .get_brightness = omapbl_get_intensity,
> .update_status = omapbl_update_status,
> };
>
> @@ -139,9 +94,6 @@ static int omapbl_probe(struct platform_device *pdev)
> if (IS_ERR(dev))
> return PTR_ERR(dev);
>
> - bl->powermode = FB_BLANK_POWERDOWN;
> - bl->current_intensity = 0;
> -
> bl->pdata = pdata;
> bl->dev = &pdev->dev;
>
> @@ -149,7 +101,6 @@ static int omapbl_probe(struct platform_device *pdev)
>
> omap_cfg_reg(PWL); /* Conflicts with UART3 */
>
> - dev->props.fb_blank = FB_BLANK_UNBLANK;
> dev->props.brightness = pdata->default_intensity;
> omapbl_update_status(dev);
>
>
> --
> 2.34.1
Wow that gets rid of a lot of unnecessary code!
Reviewed-by: Stephen Kitt <steve@xxxxxxx>
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