[PATCH 05/21] drm/atmel-hlcdc: Use GEM CMA object functions
Thomas Zimmermann
tzimmermann at suse.de
Mon May 25 22:37:33 AEST 2020
Hi
Am 22.05.20 um 21:25 schrieb Sam Ravnborg:
> Hi Thomas.
>
> On Fri, May 22, 2020 at 03:52:30PM +0200, Thomas Zimmermann wrote:
>> The atmel-hlcdc driver uses the default implementation for CMA functions. The
>> DRM_GEM_CMA_DRIVER_OPS macro now sets these defaults in struct drm_driver.
>> All remaining operations are provided by CMA GEM object functions.
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
>> ---
>> drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 11 +----------
>> 1 file changed, 1 insertion(+), 10 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
>> index 112aa5066ceed..871293d1aeeba 100644
>> --- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
>> +++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
>> @@ -821,16 +821,7 @@ static struct drm_driver atmel_hlcdc_dc_driver = {
>> .irq_preinstall = atmel_hlcdc_dc_irq_uninstall,
>> .irq_postinstall = atmel_hlcdc_dc_irq_postinstall,
>> .irq_uninstall = atmel_hlcdc_dc_irq_uninstall,
>> - .gem_free_object_unlocked = drm_gem_cma_free_object,
>> - .gem_vm_ops = &drm_gem_cma_vm_ops,
>> - .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
>> - .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
>> - .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
>> - .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
>> - .gem_prime_vmap = drm_gem_cma_prime_vmap,
>> - .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
>
>> - .gem_prime_mmap = drm_gem_cma_prime_mmap,
> When using DRM_GEM_CMA_DRIVER_OPS gem_prime_mmap is set to
> drm_gem_prime_mmap.
> Why is this the same as drm_gem_cma_prime_mmap?
>
> Maybe this is all obvious when you know all the CMA stuff,
> but this puzzeled me.
Following through the calls is far from easy.
I took the macro from the aspeed driver. I had some doubts about the
mmap code, but expected the driver to be working correctly. Maybe we
should set that field to drm_gem_cma_prime_mmap or implement the mmap
object function.
Best regards
Thomas
>
> Sam
>
>
>> - .dumb_create = drm_gem_cma_dumb_create,
>> + DRM_GEM_CMA_DRIVER_OPS,
>> .fops = &fops,
>> .name = "atmel-hlcdc",
>> .desc = "Atmel HLCD Controller DRM",
>> --
>> 2.26.2
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer
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