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drivers: gpu: add K230 video output & DSI
Signed-off-by: 黄子懿 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| # SPDX-License-Identifier: GPL-2.0-only | ||
| config DRM_CANAAN | ||
| bool "DRM Support for Canaan K230 Display Controller" | ||
| depends on OF | ||
| depends on COMMON_CLK | ||
| select DRM | ||
| select DRM_KMS_HELPER | ||
| select DRM_KMS_DMA_HELPER | ||
| select DRM_GEM_DMA_HELPER | ||
| select VIDEOMODE_HELPERS | ||
| default ARCH_CANAAN | ||
| help | ||
| Choose this option if you have a Canaan K230 soc chipset. | ||
| This driver provides kernel mode setting and buffer | ||
| management to userspace. This driver does not provide | ||
| 2D or 3D acceleration; acceleration is performed by other | ||
| IP found on the SoC. | ||
|
|
||
| if DRM_CANAAN | ||
|
|
||
| config DRM_CANAAN_DSI | ||
| bool "Canaan K230 MIPI-DSI Controller Support" | ||
| select DRM_MIPI_DSI | ||
| default DRM_CANAAN | ||
| help | ||
| Choose this option if you have a Canaan K230 soc chipset. | ||
| This driver provides MIPI-DSI controller for DRM. | ||
| This driver does not provide 2D or 3D acceleration; | ||
| acceleration is performed by other | ||
| IP found on the SoC. | ||
|
|
||
| endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| # SPDX-License-Identifier: GPL-2.0-only | ||
| canaan-drm-y := \ | ||
| canaan_drv.o \ | ||
| canaan_vo.o \ | ||
| canaan_crtc.o \ | ||
| canaan_plane.o \ | ||
| canaan_phy.o | ||
|
|
||
| obj-$(CONFIG_DRM_CANAAN) += canaan-drm.o | ||
| obj-$(CONFIG_DRM_CANAAN_DSI) += canaan_dsi.o |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,157 @@ | ||
| // SPDX-License-Identifier: GPL-2.0-only | ||
| /* | ||
| * Copyright (C) 2022, Canaan Bright Sight Co., Ltd | ||
| * | ||
| * All enquiries to https://www.canaan-creative.com/ | ||
| * | ||
| */ | ||
|
|
||
| #include <linux/version.h> | ||
| #include <linux/module.h> | ||
| #include <linux/component.h> | ||
| #include <linux/of_graph.h> | ||
| #include <linux/of_platform.h> | ||
| #include <linux/device.h> | ||
| #include <linux/platform_device.h> | ||
| #include <linux/pm_runtime.h> | ||
|
|
||
| #include <drm/drm_atomic.h> | ||
| #include <drm/drm_atomic_helper.h> | ||
| #include <drm/drm_of.h> | ||
| #include <drm/drm_crtc_helper.h> | ||
| #include <drm/drm_vblank.h> | ||
| #include <drm/drm_ioctl.h> | ||
| #include <drm/drm_fourcc.h> | ||
| #include <drm/drm_print.h> | ||
| #include <drm/drm_gem.h> | ||
| #include <drm/drm_gem_framebuffer_helper.h> | ||
| #include <drm/drm_fb_helper.h> | ||
| #include <drm/drm_drv.h> | ||
| #include <drm/drm_crtc.h> | ||
| #include <drm/drm_crtc_helper.h> | ||
| #include <drm/drm_plane.h> | ||
| #include <drm/drm_plane_helper.h> | ||
| #include <drm/drm_probe_helper.h> | ||
|
|
||
| #include "canaan_vo.h" | ||
| #include "canaan_crtc.h" | ||
| #include "canaan_plane.h" | ||
|
|
||
| static int canaan_crtc_enable_vblank(struct drm_crtc *crtc) | ||
| { | ||
| struct canaan_crtc *canaan_crtc = to_canaan_crtc(crtc); | ||
| struct canaan_vo *vo = canaan_crtc->vo; | ||
|
|
||
| DRM_DEBUG_DRIVER("Enable vblank on CRTC:%d\n", crtc->base.id); | ||
| return canaan_vo_enable_vblank(vo); | ||
| } | ||
|
|
||
| static void canaan_crtc_disable_vblank(struct drm_crtc *crtc) | ||
| { | ||
| struct canaan_crtc *canaan_crtc = to_canaan_crtc(crtc); | ||
| struct canaan_vo *vo = canaan_crtc->vo; | ||
|
|
||
| DRM_DEBUG_DRIVER("Disable vblank on CRTC:%d\n", crtc->base.id); | ||
| canaan_vo_disable_vblank(vo); | ||
| } | ||
|
|
||
| static void canaan_crtc_atomic_enable(struct drm_crtc *crtc, | ||
| struct drm_atomic_state *old_crtc_state) | ||
| { | ||
| struct canaan_crtc *canaan_crtc = to_canaan_crtc(crtc); | ||
| struct canaan_vo *vo = canaan_crtc->vo; | ||
| struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode; | ||
|
|
||
| DRM_DEBUG_DRIVER("Enable the CRTC:%d\n", crtc->base.id); | ||
|
|
||
| canaan_vo_enable_crtc(vo, canaan_crtc, adjusted_mode); | ||
| drm_crtc_vblank_on(crtc); | ||
| } | ||
|
|
||
| static void canaan_crtc_atomic_disable(struct drm_crtc *crtc, | ||
| struct drm_atomic_state *old_crtc_state) | ||
| { | ||
| struct canaan_crtc *canaan_crtc = to_canaan_crtc(crtc); | ||
| struct canaan_vo *vo = canaan_crtc->vo; | ||
|
|
||
| DRM_DEBUG_DRIVER("Disable the CRTC:%d\n", crtc->base.id); | ||
| drm_crtc_vblank_off(crtc); | ||
| canaan_vo_disable_crtc(vo, canaan_crtc); | ||
|
|
||
| if (crtc->state->event && !crtc->state->active) { | ||
| spin_lock_irq(&crtc->dev->event_lock); | ||
| drm_crtc_send_vblank_event(crtc, crtc->state->event); | ||
| spin_unlock_irq(&crtc->dev->event_lock); | ||
|
|
||
| crtc->state->event = NULL; | ||
| } | ||
| } | ||
|
|
||
| static void canaan_crtc_atomic_flush(struct drm_crtc *crtc, | ||
| struct drm_atomic_state *old_crtc_state) | ||
| { | ||
| struct canaan_crtc *canaan_crtc = to_canaan_crtc(crtc); | ||
| struct canaan_vo *vo = canaan_crtc->vo; | ||
| struct drm_pending_vblank_event *event = crtc->state->event; | ||
|
|
||
| DRM_DEBUG_DRIVER("Flush the configuration\n"); | ||
| canaan_vo_flush_config(vo); | ||
|
|
||
| if (event) { | ||
| WARN_ON(drm_crtc_vblank_get(crtc) != 0); | ||
|
|
||
| spin_lock_irq(&crtc->dev->event_lock); | ||
| drm_crtc_arm_vblank_event(crtc, event); | ||
| spin_unlock_irq(&crtc->dev->event_lock); | ||
| crtc->state->event = NULL; | ||
| } | ||
| } | ||
|
|
||
| static const struct drm_crtc_funcs canaan_crtc_funcs = { | ||
| .reset = drm_atomic_helper_crtc_reset, | ||
| .destroy = drm_crtc_cleanup, | ||
| .set_config = drm_atomic_helper_set_config, | ||
| .page_flip = drm_atomic_helper_page_flip, | ||
| .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, | ||
| .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, | ||
| .enable_vblank = canaan_crtc_enable_vblank, | ||
| .disable_vblank = canaan_crtc_disable_vblank, | ||
| }; | ||
|
|
||
| static const struct drm_crtc_helper_funcs canaan_crtc_helper_funcs = { | ||
| .atomic_enable = canaan_crtc_atomic_enable, | ||
| .atomic_disable = canaan_crtc_atomic_disable, | ||
| .atomic_flush = canaan_crtc_atomic_flush, | ||
| }; | ||
|
|
||
| struct canaan_crtc *canaan_crtc_create(struct drm_device *drm_dev, | ||
| struct drm_plane *primary, | ||
| struct drm_plane *cursor, | ||
| struct canaan_vo *vo) | ||
| { | ||
| int ret = 0; | ||
| struct canaan_crtc *canaan_crtc = NULL; | ||
| struct drm_crtc *crtc = NULL; | ||
| struct device *dev = vo->dev; | ||
|
|
||
| canaan_crtc = devm_kzalloc(dev, sizeof(struct canaan_crtc), GFP_KERNEL); | ||
| if (!canaan_crtc) | ||
| return ERR_PTR(-ENOMEM); | ||
| canaan_crtc->vo = vo; | ||
| crtc = &canaan_crtc->base; | ||
|
|
||
| ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor, | ||
| &canaan_crtc_funcs, "canaan_crtc"); | ||
| if (ret) { | ||
| return ERR_PTR(ret); | ||
| DRM_DEV_ERROR(dev, "Failed to init CRTC\n"); | ||
| } | ||
|
|
||
| drm_crtc_helper_add(crtc, &canaan_crtc_helper_funcs); | ||
|
|
||
| drm_mode_crtc_set_gamma_size(crtc, 256); | ||
| drm_crtc_enable_color_mgmt(crtc, 0, false, 256); | ||
| DRM_DEBUG_DRIVER("Create the CRTC:%d\n", crtc->base.id); | ||
|
|
||
| return canaan_crtc; | ||
| } |
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