Re: [PATCH] video: reunite fb devices with their hardware parent

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On 31.05.21 09:13, Sascha Hauer wrote:
> On Thu, May 27, 2021 at 02:44:53PM +0200, Ahmad Fatoum wrote:
>> So far, only sdlfb and efi associated the framebuffer device they
>> register with the hardware device providing it.
>>
>> Follow suit for all other frame buffers.  This enables devinfo
>> to display parentage.
>>
>> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
>> ---
>>  drivers/video/atmel_lcdfb_core.c | 1 +
>>  drivers/video/bcm2835.c          | 1 +
>>  drivers/video/bochs/bochs_hw.c   | 1 +
>>  drivers/video/imx-ipu-fb.c       | 2 ++
>>  drivers/video/imx-ipu-v3/ipufb.c | 1 +
>>  drivers/video/imx.c              | 2 ++
>>  drivers/video/omap.c             | 1 +
>>  drivers/video/pxa.c              | 1 +
>>  drivers/video/s3c24xx.c          | 1 +
>>  drivers/video/simplefb-client.c  | 1 +
>>  drivers/video/ssd1307fb.c        | 1 +
>>  drivers/video/stm.c              | 1 +
>>  12 files changed, 14 insertions(+)
>>
>> diff --git a/drivers/video/atmel_lcdfb_core.c b/drivers/video/atmel_lcdfb_core.c
>> index daabfe92d2ca..e7e420d38f86 100644
>> --- a/drivers/video/atmel_lcdfb_core.c
>> +++ b/drivers/video/atmel_lcdfb_core.c
>> @@ -489,6 +489,7 @@ int atmel_lcdc_register(struct device_d *dev, struct atmel_lcdfb_devdata *data)
>>  		sinfo->dma_desc = dma_alloc_coherent(data->dma_desc_size,
>>  						     DMA_ADDRESS_BROKEN);
>>  
>> +	info->dev.parent = dev;
>>  	ret = register_framebuffer(info);
>>  	if (ret != 0) {
>>  		dev_err(dev, "Failed to register framebuffer\n");
>> diff --git a/drivers/video/bcm2835.c b/drivers/video/bcm2835.c
>> index 3d52f8b6b8e7..d808bc5c9fa3 100644
>> --- a/drivers/video/bcm2835.c
>> +++ b/drivers/video/bcm2835.c
>> @@ -118,6 +118,7 @@ static int bcm2835fb_probe(struct device_d *dev)
>>  	info->fbi.mode->xres = info->fbi.xres;
>>  	info->fbi.mode->yres = info->fbi.yres;
>>  
>> +	info->fbi.dev.parent = dev;
>>  	ret = register_framebuffer(&info->fbi);
>>  	if (ret) {
>>  		free(info);
>> diff --git a/drivers/video/bochs/bochs_hw.c b/drivers/video/bochs/bochs_hw.c
>> index 252350aebb5a..debdd36941f4 100644
>> --- a/drivers/video/bochs/bochs_hw.c
>> +++ b/drivers/video/bochs/bochs_hw.c
>> @@ -201,5 +201,6 @@ int bochs_hw_probe(struct device_d *dev, void __iomem *fb_map, void __iomem *mmi
>>  	fb->priv = bochs;
>>  	fb->fbops = &bochs_fb_ops;
>>  
>> +	fb->dev.parent = dev;
>>  	return register_framebuffer(fb);
>>  }
>> diff --git a/drivers/video/imx-ipu-fb.c b/drivers/video/imx-ipu-fb.c
>> index a3f195373b4e..f39b74676cde 100644
>> --- a/drivers/video/imx-ipu-fb.c
>> +++ b/drivers/video/imx-ipu-fb.c
>> @@ -969,6 +969,7 @@ static int sdc_fb_register_overlay(struct ipu_fb_info *fbi, void *fb)
>>  
>>  	sdc_enable_channel(fbi, overlay->screen_base, IDMAC_SDC_1);
>>  
>> +	fbi->overlay.dev.parent = &fbi->info.dev;
>>  	ret = register_framebuffer(&fbi->overlay);
>>  	if (ret < 0) {
>>  		dev_err(fbi->dev, "failed to register framebuffer\n");
>> @@ -1039,6 +1040,7 @@ static int imxfb_probe(struct device_d *dev)
>>  
>>  	sdc_enable_channel(fbi, info->screen_base, IDMAC_SDC_0);
>>  
>> +	fbi->info.dev.parent = dev;
>>  	ret = register_framebuffer(&fbi->info);
>>  	if (ret < 0) {
>>  		dev_err(dev, "failed to register framebuffer\n");
>> diff --git a/drivers/video/imx-ipu-v3/ipufb.c b/drivers/video/imx-ipu-v3/ipufb.c
>> index 0b5391643450..68e87ff3fb8f 100644
>> --- a/drivers/video/imx-ipu-v3/ipufb.c
>> +++ b/drivers/video/imx-ipu-v3/ipufb.c
>> @@ -336,6 +336,7 @@ static int ipufb_probe(struct device_d *dev)
>>  		if (ret)
>>  			dev_dbg(fbi->dev, "failed to get modes: %s\n", strerror(-ret));
>>  
>> +		info->dev.parent = dev;
>>  		ret = register_framebuffer(info);
>>  		if (ret < 0) {
>>  			dev_err(fbi->dev, "failed to register framebuffer\n");
>> diff --git a/drivers/video/imx.c b/drivers/video/imx.c
>> index e93859775a60..f4f58b3ce353 100644
>> --- a/drivers/video/imx.c
>> +++ b/drivers/video/imx.c
>> @@ -514,6 +514,7 @@ static int imxfb_register_overlay(struct imxfb_info *fbi, void *fb)
>>  	overlay->blue   = rgb->blue;
>>  	overlay->transp = rgb->transp;
>>  
>> +	overlay->dev.parent = &fbi->info.dev;
>>  	ret = register_framebuffer(overlay);
>>  	if (ret < 0) {
>>  		dev_err(fbi->dev, "failed to register framebuffer\n");
>> @@ -592,6 +593,7 @@ static int imxfb_probe(struct device_d *dev)
>>  
>>  	imxfb_activate_var(&fbi->info);
>>  
>> +	fbi->info.dev.parent = dev;
>>  	ret = register_framebuffer(&fbi->info);
>>  	if (ret < 0) {
>>  		dev_err(dev, "failed to register framebuffer\n");
>> diff --git a/drivers/video/omap.c b/drivers/video/omap.c
>> index 009626fefc1f..52a68ef627b7 100644
>> --- a/drivers/video/omap.c
>> +++ b/drivers/video/omap.c
>> @@ -493,6 +493,7 @@ static int omapfb_probe(struct device_d *dev)
>>  		goto out;
>>  	}
>>  
>> +	info->dev.parent = dev;
>>  	rc = register_framebuffer(info);
>>  	if (rc < 0) {
>>  		dev_err(dev, "failed to register framebuffer: %d\n", rc);
>> diff --git a/drivers/video/pxa.c b/drivers/video/pxa.c
>> index a2ff4bce2a38..45efa6b71d9f 100644
>> --- a/drivers/video/pxa.c
>> +++ b/drivers/video/pxa.c
>> @@ -533,6 +533,7 @@ static int pxafb_probe(struct device_d *dev)
>>  
>>  	pxafb_activate_var(fbi);
>>  
>> +	fbi->info.dev.parent = dev;
>>  	ret = register_framebuffer(&fbi->info);
>>  	if (ret < 0) {
>>  		dev_err(dev, "failed to register framebuffer\n");
>> diff --git a/drivers/video/s3c24xx.c b/drivers/video/s3c24xx.c
>> index 84ed0aee3941..36c91e74ebd5 100644
>> --- a/drivers/video/s3c24xx.c
>> +++ b/drivers/video/s3c24xx.c
>> @@ -395,6 +395,7 @@ static int s3cfb_probe(struct device_d *hw_dev)
>>  	if (IS_ENABLED(CONFIG_DRIVER_VIDEO_S3C_VERBOSE))
>>  		hw_dev->info = s3cfb_info;
>>  
>> +	fbi.info.dev.parent = dev;
>>  	ret = register_framebuffer(&fbi.info);
>>  	if (ret != 0) {
>>  		dev_err(hw_dev, "Failed to register framebuffer\n");
>> diff --git a/drivers/video/simplefb-client.c b/drivers/video/simplefb-client.c
>> index 2d0495f6162e..1f26ac506741 100644
>> --- a/drivers/video/simplefb-client.c
>> +++ b/drivers/video/simplefb-client.c
>> @@ -121,6 +121,7 @@ static int simplefb_probe(struct device_d *dev)
>>  		 info->xres, info->yres,
>>  		 info->bits_per_pixel, info->line_length);
>>  
>> +	info->dev.parent = dev;
>>  	ret = register_framebuffer(info);
>>  	if (ret < 0) {
>>  		dev_err(dev, "Unable to register simplefb: %d\n", ret);
>> diff --git a/drivers/video/ssd1307fb.c b/drivers/video/ssd1307fb.c
>> index 994f43dc5cf5..af5d6086e1d8 100644
>> --- a/drivers/video/ssd1307fb.c
>> +++ b/drivers/video/ssd1307fb.c
>> @@ -543,6 +543,7 @@ static int ssd1307fb_probe(struct device_d *dev)
>>  	if (ret)
>>  		goto reset_oled_error;
>>  
>> +	info->dev.parent = dev;
>>  	ret = register_framebuffer(info);
>>  	if (ret) {
>>  		dev_err(&client->dev, "Couldn't register the framebuffer\n");
>> diff --git a/drivers/video/stm.c b/drivers/video/stm.c
>> index d4a618fe5091..1c8336f7e2c3 100644
>> --- a/drivers/video/stm.c
>> +++ b/drivers/video/stm.c
>> @@ -571,6 +571,7 @@ static int stmfb_probe(struct device_d *hw_dev)
>>  
>>  	fb_of_reserve_add_fixup(&fbi.info);
>>  
>> +	fbi.info.dev.parent = dev;
> 
> Should be hw_dev here. Fixed while applying, thanks

Ouch. Thanks for the fixup. Shows how much I/We would benefit from merging
the testing series soon, so Github Actions can start building these configuration
I inadvertently break :))

> 
> Sascha
> 

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