[Freedreno] [PATCH v3 5/5] drm/msm: allow compile time selection of driver components
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Thu Mar 17 12:44:26 UTC 2022
On 16/03/2022 20:26, Abhinav Kumar wrote:
>
>
> On 3/16/2022 12:31 AM, Dmitry Baryshkov wrote:
>> On 16/03/2022 03:28, Abhinav Kumar wrote:
>>>
>>>
>>> On 3/3/2022 7:21 PM, Dmitry Baryshkov wrote:
>>>> MSM DRM driver already allows one to compile out the DP or DSI support.
>>>> Add support for disabling other features like MDP4/MDP5/DPU drivers or
>>>> direct HDMI output support.
>>>>
>>>> Suggested-by: Stephen Boyd <swboyd at chromium.org>
>>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
>>>> ---
>>>> drivers/gpu/drm/msm/Kconfig | 50
>>>> ++++++++++++++++++++++++++++++++--
>>>> drivers/gpu/drm/msm/Makefile | 18 ++++++++++--
>>>> drivers/gpu/drm/msm/msm_drv.h | 33 ++++++++++++++++++++++
>>>> drivers/gpu/drm/msm/msm_mdss.c | 13 +++++++--
>>>> 4 files changed, 106 insertions(+), 8 deletions(-)
>>>>
>>>> diff --git a/drivers/gpu/drm/msm/Kconfig b/drivers/gpu/drm/msm/Kconfig
>>>> index 9b019598e042..3735fd41eb3b 100644
>>>> --- a/drivers/gpu/drm/msm/Kconfig
>>>> +++ b/drivers/gpu/drm/msm/Kconfig
>>>> @@ -46,12 +46,39 @@ config DRM_MSM_GPU_SUDO
>>>> Only use this if you are a driver developer. This should *not*
>>>> be enabled for production kernels. If unsure, say N.
>>>> -config DRM_MSM_HDMI_HDCP
>>>> - bool "Enable HDMI HDCP support in MSM DRM driver"
>>>> +config DRM_MSM_MDSS
>>>> + bool
>>>> + depends on DRM_MSM
>>>> + default n
>>> shouldnt DRM_MSM_MDSS be defaulted to y?
>>
>> No, it will be selected either by MDP5 or by DPU1. It is not used if
>> DRM_MSM is compiled with just MDP4 or headless support in mind.
> Ok got it.
>>
>>>
>>> Another question is the compilation validation of the combinations of
>>> these.
>>>
>>> So we need to try:
>>>
>>> 1) DRM_MSM_MDSS + DRM_MSM_MDP4
>>> 2) DRM_MSM_MDSS + DRM_MSM_MDP5
>>> 3) DRM_MSM_MDSS + DRM_MSM_DPU
>>>
>>> Earlier since all of them were compiled together any
>>> inter-dependencies will not show up. Now since we are separating it
>>> out, just wanted to make sure each of the combos compile?
>>
>> I think you meant:
>> - headless
>> - MDP4
>> - MDP5
>> - DPU1
>> - MDP4 + MDP5
>> - MDP4 + DPU1
>> - MDP5 + DPU1
>> - all three drivers
>>
> Yes, each of these combinations.
Each of them was tested.
>>>
>>>> +
>>>> +config DRM_MSM_MDP4
>>>> + bool "Enable MDP4 support in MSM DRM driver"
>>>> depends on DRM_MSM
>>>> default y
>>>> help
>>>> - Choose this option to enable HDCP state machine
>>>> + Compile in support for the Mobile Display Processor v4 (MDP4) in
>>>> + the MSM DRM driver. It is the older display controller found in
>>>> + devices using APQ8064/MSM8960/MSM8x60 platforms.
>>>> +
>>>> +config DRM_MSM_MDP5
>>>> + bool "Enable MDP5 support in MSM DRM driver"
>>>> + depends on DRM_MSM
>>>> + select DRM_MSM_MDSS
>>>> + default y
>>>> + help
>>>> + Compile in support for the Mobile Display Processor v5 (MDP4) in
>>>> + the MSM DRM driver. It is the display controller found in
>>>> devices
>>>> + using e.g. APQ8016/MSM8916/APQ8096/MSM8996/MSM8974/SDM6x0
>>>> platforms.
>>>> +
>>>> +config DRM_MSM_DPU
>>>> + bool "Enable DPU support in MSM DRM driver"
>>>> + depends on DRM_MSM
>>>> + select DRM_MSM_MDSS
>>>> + default y
>>>> + help
>>>> + Compile in support for the Display Processing Unit in
>>>> + the MSM DRM driver. It is the display controller found in
>>>> devices
>>>> + using e.g. SDM845 and newer platforms.
>>>> config DRM_MSM_DP
>>>> bool "Enable DisplayPort support in MSM DRM driver"
>>>> @@ -116,3 +143,20 @@ config DRM_MSM_DSI_7NM_PHY
>>>> help
>>>> Choose this option if DSI PHY on SM8150/SM8250/SC7280 is
>>>> used on
>>>> the platform.
>>>> +
>>>> +config DRM_MSM_HDMI
>>>> + bool "Enable HDMI support in MSM DRM driver"
>>>> + depends on DRM_MSM
>>>> + default y
>>>> + help
>>>> + Compile in support for the HDMI output MSM DRM driver. It can
>>>> + be a primary or a secondary display on device. Note that this
>>>> is used
>>>> + only for the direct HDMI output. If the device outputs HDMI data
>>>> + throught some kind of DSI-to-HDMI bridge, this option can be
>>>> disabled.
>>>> +
>>>> +config DRM_MSM_HDMI_HDCP
>>>> + bool "Enable HDMI HDCP support in MSM DRM driver"
>>>> + depends on DRM_MSM && DRM_MSM_HDMI
>>>> + default y
>>>> + help
>>>> + Choose this option to enable HDCP state machine
>>>> diff --git a/drivers/gpu/drm/msm/Makefile
>>>> b/drivers/gpu/drm/msm/Makefile
>>>> index e76927b42033..5fe9c20ab9ee 100644
>>>> --- a/drivers/gpu/drm/msm/Makefile
>>>> +++ b/drivers/gpu/drm/msm/Makefile
>>>> @@ -16,6 +16,8 @@ msm-y := \
>>>> adreno/a6xx_gpu.o \
>>>> adreno/a6xx_gmu.o \
>>>> adreno/a6xx_hfi.o \
>>>> +
>>>> +msm-$(CONFIG_DRM_MSM_HDMI) += \
>>>> hdmi/hdmi.o \
>>>> hdmi/hdmi_audio.o \
>>>> hdmi/hdmi_bridge.o \
>>>> @@ -27,8 +29,8 @@ msm-y := \
>>>> hdmi/hdmi_phy_8x60.o \
>>>> hdmi/hdmi_phy_8x74.o \
>>>> hdmi/hdmi_pll_8960.o \
>>>> - disp/mdp_format.o \
>>>> - disp/mdp_kms.o \
>>>> +
>>>> +msm-$(CONFIG_DRM_MSM_MDP4) += \
>>>> disp/mdp4/mdp4_crtc.o \
>>>> disp/mdp4/mdp4_dtv_encoder.o \
>>>> disp/mdp4/mdp4_lcdc_encoder.o \
>>>> @@ -37,6 +39,8 @@ msm-y := \
>>>> disp/mdp4/mdp4_irq.o \
>>>> disp/mdp4/mdp4_kms.o \
>>>> disp/mdp4/mdp4_plane.o \
>>>> +
>>>> +msm-$(CONFIG_DRM_MSM_MDP5) += \
>>>> disp/mdp5/mdp5_cfg.o \
>>>> disp/mdp5/mdp5_ctl.o \
>>>> disp/mdp5/mdp5_crtc.o \
>>>> @@ -47,6 +51,8 @@ msm-y := \
>>>> disp/mdp5/mdp5_mixer.o \
>>>> disp/mdp5/mdp5_plane.o \
>>>> disp/mdp5/mdp5_smp.o \
>>>> +
>>>> +msm-$(CONFIG_DRM_MSM_DPU) += \
>>>> disp/dpu1/dpu_core_perf.o \
>>>> disp/dpu1/dpu_crtc.o \
>>>> disp/dpu1/dpu_encoder.o \
>>>> @@ -69,6 +75,13 @@ msm-y := \
>>>> disp/dpu1/dpu_plane.o \
>>>> disp/dpu1/dpu_rm.o \
>>>> disp/dpu1/dpu_vbif.o \
>>>> +
>>>> +msm-$(CONFIG_DRM_MSM_MDSS) += \
>>>> + msm_mdss.o \
>>>> +
>>>> +msm-y += \
>>>> + disp/mdp_format.o \
>>>> + disp/mdp_kms.o \
>>>> disp/msm_disp_snapshot.o \
>>>> disp/msm_disp_snapshot_util.o \
>>>> msm_atomic.o \
>>>> @@ -86,7 +99,6 @@ msm-y := \
>>>> msm_gpu_devfreq.o \
>>>> msm_io_utils.o \
>>>> msm_iommu.o \
>>>> - msm_mdss.o \
>>>> msm_perf.o \
>>>> msm_rd.o \
>>>> msm_ringbuffer.o \
>>>> diff --git a/drivers/gpu/drm/msm/msm_drv.h
>>>> b/drivers/gpu/drm/msm/msm_drv.h
>>>> index c1aaadfbea34..6bad7e7b479d 100644
>>>> --- a/drivers/gpu/drm/msm/msm_drv.h
>>>> +++ b/drivers/gpu/drm/msm/msm_drv.h
>>>> @@ -314,10 +314,20 @@ struct drm_fb_helper *msm_fbdev_init(struct
>>>> drm_device *dev);
>>>> void msm_fbdev_free(struct drm_device *dev);
>>>> struct hdmi;
>>>> +#ifdef CONFIG_DRM_MSM_HDMI
>>>> int msm_hdmi_modeset_init(struct hdmi *hdmi, struct drm_device *dev,
>>>> struct drm_encoder *encoder);
>>>> void __init msm_hdmi_register(void);
>>>> void __exit msm_hdmi_unregister(void);
>>>> +#else
>>>> +static inline int msm_hdmi_modeset_init(struct hdmi *hdmi, struct
>>>> drm_device *dev,
>>>> + struct drm_encoder *encoder)
>>>> +{
>>>> + return -EINVAL;
>>>> +}
>>>> +static inline void __init msm_hdmi_register(void) {}
>>>> +static inline void __exit msm_hdmi_unregister(void) {}
>>>> +#endif
>>>> struct msm_dsi;
>>>> #ifdef CONFIG_DRM_MSM_DSI
>>>> @@ -432,14 +442,37 @@ static inline void msm_dp_debugfs_init(struct
>>>> msm_dp *dp_display,
>>>> #endif
>>>> +#ifdef CONFIG_DRM_MSM_MDP4
>>>> void msm_mdp4_register(void);
>>>> void msm_mdp4_unregister(void);
>>>> +#else
>>>> +static inline void msm_mdp4_register(void) {}
>>>> +static inline void msm_mdp4_unregister(void) {}
>>>> +#endif
>>>> +
>>>> +#ifdef CONFIG_DRM_MSM_MDP5
>>>> void msm_mdp_register(void);
>>>> void msm_mdp_unregister(void);
>>>> +#else
>>>> +static inline void msm_mdp_register(void) {}
>>>> +static inline void msm_mdp_unregister(void) {}
>>>> +#endif
>>>> +
>>>> +#ifdef CONFIG_DRM_MSM_DPU
>>>> void msm_dpu_register(void);
>>>> void msm_dpu_unregister(void);
>>>> +#else
>>>> +static inline void msm_dpu_register(void) {}
>>>> +static inline void msm_dpu_unregister(void) {}
>>>> +#endif
>>>> +
>>>> +#ifdef CONFIG_DRM_MSM_MDSS
>>>> void msm_mdss_register(void);
>>>> void msm_mdss_unregister(void);
>>>> +#else
>>>> +static inline void msm_mdss_register(void) {}
>>>> +static inline void msm_mdss_unregister(void) {}
>>>> +#endif
>>>> #ifdef CONFIG_DEBUG_FS
>>>> void msm_framebuffer_describe(struct drm_framebuffer *fb, struct
>>>> seq_file *m);
>>>> diff --git a/drivers/gpu/drm/msm/msm_mdss.c
>>>> b/drivers/gpu/drm/msm/msm_mdss.c
>>>> index 4d25d8955301..66714b356762 100644
>>>> --- a/drivers/gpu/drm/msm/msm_mdss.c
>>>> +++ b/drivers/gpu/drm/msm/msm_mdss.c
>>>> @@ -303,8 +303,17 @@ static const struct dev_pm_ops mdss_pm_ops = {
>>>> static int find_mdp_node(struct device *dev, void *data)
>>>> {
>>>> - return of_match_node(dpu_dt_match, dev->of_node) ||
>>>> - of_match_node(mdp5_dt_match, dev->of_node);
>>>> +#ifdef CONFIG_DRM_MSM_DPU
>>>> + if (of_match_node(dpu_dt_match, dev->of_node))
>>>> + return true;
>>>> +#endif
>>>> +
>>>> +#ifdef CONFIG_DRM_MSM_MDP5
>>>> + if (of_match_node(mdp5_dt_match, dev->of_node))
>>>> + return true;
>>>> +#endif
>>>> +
>>>> + return false;
>>>> }
>>>> static int mdss_probe(struct platform_device *pdev)
>>
>>
--
With best wishes
Dmitry
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