[PATCH v6 6/9] drm/hisilicon/hibmc: Add encoder for VDAC
Rongrong Zou
zourongrong at huawei.com
Sat Nov 12 10:36:15 UTC 2016
在 2016/11/11 6:20, Sean Paul 写道:
> On Fri, Oct 28, 2016 at 3:27 AM, Rongrong Zou <zourongrong at gmail.com> wrote:
>> Add encoder funcs and helpers for VDAC.
>>
>> Signed-off-by: Rongrong Zou <zourongrong at gmail.com>
>> ---
>> drivers/gpu/drm/hisilicon/hibmc/Makefile | 2 +-
>> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 6 ++
>> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 2 +
>> drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c | 89 ++++++++++++++++++++++++
>> 4 files changed, 98 insertions(+), 1 deletion(-)
>> create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
>>
>> diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile b/drivers/gpu/drm/hisilicon/hibmc/Makefile
>> index 72e107e..e04f114 100644
>> --- a/drivers/gpu/drm/hisilicon/hibmc/Makefile
>> +++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile
>> @@ -1,5 +1,5 @@
>> ccflags-y := -Iinclude/drm
>> -hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_fbdev.o hibmc_drm_power.o hibmc_ttm.o
>> +hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_fbdev.o hibmc_drm_power.o hibmc_ttm.o
>>
>> obj-$(CONFIG_DRM_HISI_HIBMC) +=hibmc-drm.o
>> #obj-y += hibmc-drm.o
>> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> index 303cd36..ba191e1 100644
>> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
>> @@ -125,6 +125,12 @@ static int hibmc_kms_init(struct hibmc_drm_device *hidev)
>> return ret;
>> }
>>
>> + ret = hibmc_encoder_init(hidev);
>> + if (ret) {
>> + DRM_ERROR("failed to init encoder\n");
>> + return ret;
>> + }
>> +
>> return 0;
>> }
>>
>> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
>> index 5731ec2..401cea4 100644
>> --- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
>> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h
>> @@ -47,6 +47,7 @@ struct hibmc_drm_device {
>> struct drm_device *dev;
>> struct drm_plane plane;
>> struct drm_crtc crtc;
>> + struct drm_encoder encoder;
>
> Same comment here, you don't need to keep track of this
ok, it can be dealt with like crtc.
>
>> bool mode_config_initialized;
>>
>> /* ttm */
>> @@ -87,6 +88,7 @@ static inline struct hibmc_bo *gem_to_hibmc_bo(struct drm_gem_object *gem)
>>
>> int hibmc_plane_init(struct hibmc_drm_device *hidev);
>> int hibmc_crtc_init(struct hibmc_drm_device *hidev);
>> +int hibmc_encoder_init(struct hibmc_drm_device *hidev);
>> int hibmc_fbdev_init(struct hibmc_drm_device *hidev);
>> void hibmc_fbdev_fini(struct hibmc_drm_device *hidev);
>>
>> diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
>> new file mode 100644
>> index 0000000..953f659
>> --- /dev/null
>> +++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c
>> @@ -0,0 +1,89 @@
>> +/* Hisilicon Hibmc SoC drm driver
>> + *
>> + * Based on the bochs drm driver.
>> + *
>> + * Copyright (c) 2016 Huawei Limited.
>> + *
>> + * Author:
>> + * Rongrong Zou <zourongrong at huawei.com>
>> + * Rongrong Zou <zourongrong at gmail.com>
>> + * Jianhua Li <lijianhua at huawei.com>
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License as published by
>> + * the Free Software Foundation; either version 2 of the License, or
>> + * (at your option) any later version.
>> + *
>> + */
>> +
>> +#include <drm/drm_atomic_helper.h>
>> +#include <drm/drm_crtc_helper.h>
>> +
>> +#include "hibmc_drm_drv.h"
>> +#include "hibmc_drm_regs.h"
>> +
>> +static int defx = 800;
>> +static int defy = 600;
>> +
>> +module_param(defx, int, 0444);
>> +module_param(defy, int, 0444);
>> +MODULE_PARM_DESC(defx, "default x resolution");
>> +MODULE_PARM_DESC(defy, "default y resolution");
>
> Not used, and I'm not sure these are a good idea
it is used in following patch, i think it is put in wrong place.
>
>> +
>> +static void hibmc_encoder_disable(struct drm_encoder *encoder)
>> +{
>> +}
>> +
>> +static void hibmc_encoder_enable(struct drm_encoder *encoder)
>> +{
>> +}
>
> Null-checked, no need to stub
thanks for pointing it out.
>
>> +
>> +static void hibmc_encoder_mode_set(struct drm_encoder *encoder,
>> + struct drm_display_mode *mode,
>> + struct drm_display_mode *adj_mode)
>> +{
>> + u32 reg;
>> + struct drm_device *dev = encoder->dev;
>> + struct hibmc_drm_device *hidev = dev->dev_private;
>> +
>> + /* just open DISPLAY_CONTROL_HISILE register bit 3:0*/
>> + reg = readl(hidev->mmio + DISPLAY_CONTROL_HISILE);
>> + reg |= 0xf;
>
> Can you just pull this into a #define instead of explaining in the comment?
ok, thanks.
>
>> + writel(reg, hidev->mmio + DISPLAY_CONTROL_HISILE);
>> +}
>> +
>> +static int hibmc_encoder_atomic_check(struct drm_encoder *encoder,
>> + struct drm_crtc_state *crtc_state,
>> + struct drm_connector_state *conn_state)
>> +{
>> + return 0;
>> +}
>
> null-checked, remove stub
ok, will do.
>
>> +
>> +static const struct drm_encoder_helper_funcs hibmc_encoder_helper_funcs = {
>> + .mode_set = hibmc_encoder_mode_set,
>> + .disable = hibmc_encoder_disable,
>> + .enable = hibmc_encoder_enable,
>> + .atomic_check = hibmc_encoder_atomic_check,
>> +};
>> +
>> +static const struct drm_encoder_funcs hibmc_encoder_encoder_funcs = {
>> + .destroy = drm_encoder_cleanup,
>> +};
>> +
>> +int hibmc_encoder_init(struct hibmc_drm_device *hidev)
>> +{
>> + struct drm_device *dev = hidev->dev;
>> + struct drm_encoder *encoder = &hidev->encoder;
>> + int ret;
>> +
>> + encoder->possible_crtcs = 0x1;
>> + ret = drm_encoder_init(dev, encoder, &hibmc_encoder_encoder_funcs,
>> + DRM_MODE_ENCODER_DAC, NULL);
>> + if (ret) {
>> + DRM_ERROR("failed to init encoder\n");
>
> print ret
will do, thanks.
>
>> + return ret;
>> + }
>> +
>> + drm_encoder_helper_add(encoder, &hibmc_encoder_helper_funcs);
>> + return 0;
>> +}
>> --
>> 1.9.1
>>
>>
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>
> .
>
--
Regards, Rongrong
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