Cc Robin & Joerg Maxime Ripard <maxime@xxxxxxxxxx> 于2021年4月30日周五 下午5:22写道: > > On Sun, Apr 25, 2021 at 08:36:05PM +0800, Kevin Tang wrote: > > Adds DPU(Display Processor Unit) support for the Unisoc's display > > subsystem. > > It's support multi planes, scaler, rotation, PQ(Picture Quality) and more. > > > > v2: > > - Use drm_xxx to replace all DRM_XXX. > > - Use kzalloc to replace devm_kzalloc for sprd_dpu structure init. > > > > v3: > > - Remove dpu_layer stuff layer and commit layers by aotmic_update > > > > v4: > > - Use drmm_helpers to allocate crtc and planes. > > - Move rotation enum definitions to crtc layer reg bitfields. > > - Move allocate crtc and planes to bind function. > > > > v5: > > - Fix the checkpatch warnings. > > - Use mode_set_nofb instead of mode_valid callback. > > - Follow the OF-Graph bindings, use of_graph_get_port_by_id > > instead of of_parse_phandle. > > - Use zpos to represent the layer position. > > - Rebase to last drm misc branch. > > > > Cc: Orson Zhai <orsonzhai@xxxxxxxxx> > > Cc: Chunyan Zhang <zhang.lyra@xxxxxxxxx> > > Signed-off-by: Kevin Tang <kevin.tang@xxxxxxxxxx> > > --- > > drivers/gpu/drm/sprd/Kconfig | 1 + > > drivers/gpu/drm/sprd/Makefile | 3 +- > > drivers/gpu/drm/sprd/sprd_dpu.c | 939 ++++++++++++++++++++++++++++++++ > > drivers/gpu/drm/sprd/sprd_dpu.h | 109 ++++ > > drivers/gpu/drm/sprd/sprd_drm.c | 1 + > > drivers/gpu/drm/sprd/sprd_drm.h | 2 + > > 6 files changed, 1054 insertions(+), 1 deletion(-) > > create mode 100644 drivers/gpu/drm/sprd/sprd_dpu.c > > create mode 100644 drivers/gpu/drm/sprd/sprd_dpu.h > > > > diff --git a/drivers/gpu/drm/sprd/Kconfig b/drivers/gpu/drm/sprd/Kconfig > > index 726c3e76d..37762c333 100644 > > --- a/drivers/gpu/drm/sprd/Kconfig > > +++ b/drivers/gpu/drm/sprd/Kconfig > > @@ -5,6 +5,7 @@ config DRM_SPRD > > select DRM_GEM_CMA_HELPER > > select DRM_KMS_CMA_HELPER > > select DRM_KMS_HELPER > > + select VIDEOMODE_HELPERS > > help > > Choose this option if you have a Unisoc chipset. > > If M is selected the module will be called sprd_drm. > > diff --git a/drivers/gpu/drm/sprd/Makefile b/drivers/gpu/drm/sprd/Makefile > > index 9850f00b8..ab12b95e6 100644 > > --- a/drivers/gpu/drm/sprd/Makefile > > +++ b/drivers/gpu/drm/sprd/Makefile > > @@ -1,3 +1,4 @@ > > # SPDX-License-Identifier: GPL-2.0 > > > > -obj-y := sprd_drm.o > > +obj-y := sprd_drm.o \ > > + sprd_dpu.o > > diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c > > new file mode 100644 > > index 000000000..e74c3dbb3 > > --- /dev/null > > +++ b/drivers/gpu/drm/sprd/sprd_dpu.c > > @@ -0,0 +1,939 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Copyright (C) 2020 Unisoc Inc. > > + */ > > + > > +#include <linux/component.h> > > +#include <linux/delay.h> > > +#include <linux/dma-buf.h> > > +#include <linux/io.h> > > +#include <linux/module.h> > > +#include <linux/of.h> > > +#include <linux/of_address.h> > > +#include <linux/of_device.h> > > +#include <linux/of_graph.h> > > +#include <linux/of_irq.h> > > +#include <linux/wait.h> > > +#include <linux/workqueue.h> > > + > > +#include <drm/drm_atomic_helper.h> > > +#include <drm/drm_crtc_helper.h> > > +#include <drm/drm_fb_cma_helper.h> > > +#include <drm/drm_gem_cma_helper.h> > > +#include <drm/drm_gem_framebuffer_helper.h> > > +#include <drm/drm_plane_helper.h> > > + > > +#include "sprd_drm.h" > > +#include "sprd_dpu.h" > > + > > +/* Global control registers */ > > +#define REG_DPU_CTRL 0x04 > > +#define REG_DPU_CFG0 0x08 > > +#define REG_PANEL_SIZE 0x20 > > +#define REG_BLEND_SIZE 0x24 > > +#define REG_BG_COLOR 0x2C > > + > > +/* Layer0 control registers */ > > +#define REG_LAY_BASE_ADDR0 0x30 > > +#define REG_LAY_BASE_ADDR1 0x34 > > +#define REG_LAY_BASE_ADDR2 0x38 > > +#define REG_LAY_CTRL 0x40 > > +#define REG_LAY_SIZE 0x44 > > +#define REG_LAY_PITCH 0x48 > > +#define REG_LAY_POS 0x4C > > +#define REG_LAY_ALPHA 0x50 > > +#define REG_LAY_CROP_START 0x5C > > + > > +/* Interrupt control registers */ > > +#define REG_DPU_INT_EN 0x1E0 > > +#define REG_DPU_INT_CLR 0x1E4 > > +#define REG_DPU_INT_STS 0x1E8 > > + > > +/* DPI control registers */ > > +#define REG_DPI_CTRL 0x1F0 > > +#define REG_DPI_H_TIMING 0x1F4 > > +#define REG_DPI_V_TIMING 0x1F8 > > + > > +/* MMU control registers */ > > +#define REG_MMU_EN 0x800 > > +#define REG_MMU_VPN_RANGE 0x80C > > +#define REG_MMU_VAOR_ADDR_RD 0x818 > > +#define REG_MMU_VAOR_ADDR_WR 0x81C > > +#define REG_MMU_INV_ADDR_RD 0x820 > > +#define REG_MMU_INV_ADDR_WR 0x824 > > +#define REG_MMU_PPN1 0x83C > > +#define REG_MMU_RANGE1 0x840 > > +#define REG_MMU_PPN2 0x844 > > +#define REG_MMU_RANGE2 0x848 > > + > > +/* Global control bits */ > > +#define BIT_DPU_RUN BIT(0) > > +#define BIT_DPU_STOP BIT(1) > > +#define BIT_DPU_REG_UPDATE BIT(2) > > +#define BIT_DPU_IF_EDPI BIT(0) > > + > > +/* Layer control bits */ > > +#define BIT_DPU_LAY_EN BIT(0) > > +#define BIT_DPU_LAY_LAYER_ALPHA (0x01 << 2) > > +#define BIT_DPU_LAY_COMBO_ALPHA (0x02 << 2) > > +#define BIT_DPU_LAY_FORMAT_YUV422_2PLANE (0x00 << 4) > > +#define BIT_DPU_LAY_FORMAT_YUV420_2PLANE (0x01 << 4) > > +#define BIT_DPU_LAY_FORMAT_YUV420_3PLANE (0x02 << 4) > > +#define BIT_DPU_LAY_FORMAT_ARGB8888 (0x03 << 4) > > +#define BIT_DPU_LAY_FORMAT_RGB565 (0x04 << 4) > > +#define BIT_DPU_LAY_DATA_ENDIAN_B0B1B2B3 (0x00 << 8) > > +#define BIT_DPU_LAY_DATA_ENDIAN_B3B2B1B0 (0x01 << 8) > > +#define BIT_DPU_LAY_NO_SWITCH (0x00 << 10) > > +#define BIT_DPU_LAY_RB_OR_UV_SWITCH (0x01 << 10) > > +#define BIT_DPU_LAY_MODE_BLEND_NORMAL (0x00 << 16) > > +#define BIT_DPU_LAY_MODE_BLEND_PREMULT (0x01 << 16) > > +#define BIT_DPU_LAY_ROTATION_0 (0x00 << 20) > > +#define BIT_DPU_LAY_ROTATION_90 (0x01 << 20) > > +#define BIT_DPU_LAY_ROTATION_180 (0x02 << 20) > > +#define BIT_DPU_LAY_ROTATION_270 (0x03 << 20) > > +#define BIT_DPU_LAY_ROTATION_0_M (0x04 << 20) > > +#define BIT_DPU_LAY_ROTATION_90_M (0x05 << 20) > > +#define BIT_DPU_LAY_ROTATION_180_M (0x06 << 20) > > +#define BIT_DPU_LAY_ROTATION_270_M (0x07 << 20) > > + > > +/* Interrupt control & status bits */ > > +#define BIT_DPU_INT_DONE BIT(0) > > +#define BIT_DPU_INT_TE BIT(1) > > +#define BIT_DPU_INT_ERR BIT(2) > > +#define BIT_DPU_INT_UPDATE_DONE BIT(4) > > +#define BIT_DPU_INT_VSYNC BIT(5) > > +#define BIT_DPU_INT_MMU_VAOR_RD BIT(16) > > +#define BIT_DPU_INT_MMU_VAOR_WR BIT(17) > > +#define BIT_DPU_INT_MMU_INV_RD BIT(18) > > +#define BIT_DPU_INT_MMU_INV_WR BIT(19) > > + > > +/* DPI control bits */ > > +#define BIT_DPU_EDPI_TE_EN BIT(8) > > +#define BIT_DPU_EDPI_FROM_EXTERNAL_PAD BIT(10) > > +#define BIT_DPU_DPI_HALT_EN BIT(16) > > + > > +static const u32 layer_fmts[] = { > > + DRM_FORMAT_XRGB8888, > > + DRM_FORMAT_XBGR8888, > > + DRM_FORMAT_ARGB8888, > > + DRM_FORMAT_ABGR8888, > > + DRM_FORMAT_RGBA8888, > > + DRM_FORMAT_BGRA8888, > > + DRM_FORMAT_RGBX8888, > > + DRM_FORMAT_RGB565, > > + DRM_FORMAT_BGR565, > > + DRM_FORMAT_NV12, > > + DRM_FORMAT_NV21, > > + DRM_FORMAT_NV16, > > + DRM_FORMAT_NV61, > > + DRM_FORMAT_YUV420, > > + DRM_FORMAT_YVU420, > > +}; > > + > > +struct sprd_plane { > > + struct drm_plane base; > > +}; > > + > > +static u32 check_mmu_isr(struct sprd_dpu *dpu, u32 reg_val) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + u32 mmu_mask = BIT_DPU_INT_MMU_VAOR_RD | > > + BIT_DPU_INT_MMU_VAOR_WR | > > + BIT_DPU_INT_MMU_INV_RD | > > + BIT_DPU_INT_MMU_INV_WR; > > + u32 val = reg_val & mmu_mask; > > + int i; > > + > > + if (val) { > > + drm_err(dpu->drm, "--- iommu interrupt err: 0x%04x ---\n", val); > > + > > + if (val & BIT_DPU_INT_MMU_INV_RD) > > + drm_err(dpu->drm, "iommu invalid read error, addr: 0x%08x\n", > > + readl(ctx->base + REG_MMU_INV_ADDR_RD)); > > + if (val & BIT_DPU_INT_MMU_INV_WR) > > + drm_err(dpu->drm, "iommu invalid write error, addr: 0x%08x\n", > > + readl(ctx->base + REG_MMU_INV_ADDR_WR)); > > + if (val & BIT_DPU_INT_MMU_VAOR_RD) > > + drm_err(dpu->drm, "iommu va out of range read error, addr: 0x%08x\n", > > + readl(ctx->base + REG_MMU_VAOR_ADDR_RD)); > > + if (val & BIT_DPU_INT_MMU_VAOR_WR) > > + drm_err(dpu->drm, "iommu va out of range write error, addr: 0x%08x\n", > > + readl(ctx->base + REG_MMU_VAOR_ADDR_WR)); > > + > > + for (i = 0; i < 8; i++) { > > + reg_val = layer_reg_rd(ctx, REG_LAY_CTRL, i); > > + if (reg_val & 0x1) > > + drm_info(dpu->drm, "layer%d: 0x%x 0x%x 0x%x ctrl: 0x%x\n", i, > > + layer_reg_rd(ctx, REG_LAY_BASE_ADDR0, i), > > + layer_reg_rd(ctx, REG_LAY_BASE_ADDR1, i), > > + layer_reg_rd(ctx, REG_LAY_BASE_ADDR2, i), > > + layer_reg_rd(ctx, REG_LAY_CTRL, i)); > > + } > > + } > > + > > + return val; > > +} > > We'll still want an Acked-by from the IOMMU maintainers, please add them in Cc. > > > +static int dpu_wait_stop_done(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + int rc; > > + > > + if (ctx->stopped) > > + return 0; > > + > > + rc = wait_event_interruptible_timeout(ctx->wait_queue, ctx->evt_stop, > > + msecs_to_jiffies(500)); > > + ctx->evt_stop = false; > > + > > + ctx->stopped = true; > > + > > + if (!rc) { > > + drm_err(dpu->drm, "dpu wait for stop done time out!\n"); > > + return -ETIMEDOUT; > > + } > > + > > + return 0; > > +} > > + > > +static int dpu_wait_update_done(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + int rc; > > + > > + ctx->evt_update = false; > > + > > + rc = wait_event_interruptible_timeout(ctx->wait_queue, ctx->evt_update, > > + msecs_to_jiffies(500)); > > + > > + if (!rc) { > > + drm_err(dpu->drm, "dpu wait for reg update done time out!\n"); > > + return -ETIMEDOUT; > > + } > > + > > + return 0; > > +} > > + > > +static u32 drm_format_to_dpu(struct drm_framebuffer *fb) > > +{ > > + u32 format = 0; > > + > > + switch (fb->format->format) { > > + case DRM_FORMAT_BGRA8888: > > + /* BGRA8888 -> ARGB8888 */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B3B2B1B0; > > + format |= BIT_DPU_LAY_FORMAT_ARGB8888; > > + break; > > + case DRM_FORMAT_RGBX8888: > > + case DRM_FORMAT_RGBA8888: > > + /* RGBA8888 -> ABGR8888 */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B3B2B1B0; > > + fallthrough; > > + case DRM_FORMAT_ABGR8888: > > + /* RB switch */ > > + format |= BIT_DPU_LAY_RB_OR_UV_SWITCH; > > + fallthrough; > > + case DRM_FORMAT_ARGB8888: > > + format |= BIT_DPU_LAY_FORMAT_ARGB8888; > > + break; > > + case DRM_FORMAT_XBGR8888: > > + /* RB switch */ > > + format |= BIT_DPU_LAY_RB_OR_UV_SWITCH; > > + fallthrough; > > + case DRM_FORMAT_XRGB8888: > > + format |= BIT_DPU_LAY_FORMAT_ARGB8888; > > + break; > > + case DRM_FORMAT_BGR565: > > + /* RB switch */ > > + format |= BIT_DPU_LAY_RB_OR_UV_SWITCH; > > + fallthrough; > > + case DRM_FORMAT_RGB565: > > + format |= BIT_DPU_LAY_FORMAT_RGB565; > > + break; > > + case DRM_FORMAT_NV12: > > + /* 2-Lane: Yuv420 */ > > + format |= BIT_DPU_LAY_FORMAT_YUV420_2PLANE; > > + /* Y endian */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B0B1B2B3; > > + /* UV endian */ > > + format |= BIT_DPU_LAY_NO_SWITCH; > > + break; > > + case DRM_FORMAT_NV21: > > + /* 2-Lane: Yuv420 */ > > + format |= BIT_DPU_LAY_FORMAT_YUV420_2PLANE; > > + /* Y endian */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B0B1B2B3; > > + /* UV endian */ > > + format |= BIT_DPU_LAY_RB_OR_UV_SWITCH; > > + break; > > + case DRM_FORMAT_NV16: > > + /* 2-Lane: Yuv422 */ > > + format |= BIT_DPU_LAY_FORMAT_YUV422_2PLANE; > > + /* Y endian */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B3B2B1B0; > > + /* UV endian */ > > + format |= BIT_DPU_LAY_RB_OR_UV_SWITCH; > > + break; > > + case DRM_FORMAT_NV61: > > + /* 2-Lane: Yuv422 */ > > + format |= BIT_DPU_LAY_FORMAT_YUV422_2PLANE; > > + /* Y endian */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B0B1B2B3; > > + /* UV endian */ > > + format |= BIT_DPU_LAY_NO_SWITCH; > > + break; > > + case DRM_FORMAT_YUV420: > > + format |= BIT_DPU_LAY_FORMAT_YUV420_3PLANE; > > + /* Y endian */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B0B1B2B3; > > + /* UV endian */ > > + format |= BIT_DPU_LAY_NO_SWITCH; > > + break; > > + case DRM_FORMAT_YVU420: > > + format |= BIT_DPU_LAY_FORMAT_YUV420_3PLANE; > > + /* Y endian */ > > + format |= BIT_DPU_LAY_DATA_ENDIAN_B0B1B2B3; > > + /* UV endian */ > > + format |= BIT_DPU_LAY_RB_OR_UV_SWITCH; > > + break; > > + default: > > + break; > > + } > > + > > + return format; > > +} > > + > > +static u32 drm_rotation_to_dpu(struct drm_plane_state *state) > > +{ > > + u32 rotation = 0; > > + > > + switch (state->rotation) { > > + default: > > + case DRM_MODE_ROTATE_0: > > + rotation = BIT_DPU_LAY_ROTATION_0; > > + break; > > + case DRM_MODE_ROTATE_90: > > + rotation = BIT_DPU_LAY_ROTATION_90; > > + break; > > + case DRM_MODE_ROTATE_180: > > + rotation = BIT_DPU_LAY_ROTATION_180; > > + break; > > + case DRM_MODE_ROTATE_270: > > + rotation = BIT_DPU_LAY_ROTATION_270; > > + break; > > + case DRM_MODE_REFLECT_Y: > > + rotation = BIT_DPU_LAY_ROTATION_180_M; > > + break; > > + case (DRM_MODE_REFLECT_Y | DRM_MODE_ROTATE_90): > > + rotation = BIT_DPU_LAY_ROTATION_90_M; > > + break; > > + case DRM_MODE_REFLECT_X: > > + rotation = BIT_DPU_LAY_ROTATION_0_M; > > + break; > > + case (DRM_MODE_REFLECT_X | DRM_MODE_ROTATE_90): > > + rotation = BIT_DPU_LAY_ROTATION_270_M; > > + break; > > + } > > + > > + return rotation; > > +} > > + > > +static u32 drm_blend_to_dpu(struct drm_plane_state *state) > > +{ > > + u32 blend = 0; > > + > > + switch (state->pixel_blend_mode) { > > + case DRM_MODE_BLEND_COVERAGE: > > + /* alpha mode select - combo alpha */ > > + blend |= BIT_DPU_LAY_COMBO_ALPHA; > > + /* Normal mode */ > > + blend |= BIT_DPU_LAY_MODE_BLEND_NORMAL; > > + break; > > + case DRM_MODE_BLEND_PREMULTI: > > + /* alpha mode select - combo alpha */ > > + blend |= BIT_DPU_LAY_COMBO_ALPHA; > > + /* Pre-mult mode */ > > + blend |= BIT_DPU_LAY_MODE_BLEND_PREMULT; > > + break; > > + case DRM_MODE_BLEND_PIXEL_NONE: > > + default: > > + /* don't do blending, maybe RGBX */ > > + /* alpha mode select - layer alpha */ > > + blend |= BIT_DPU_LAY_LAYER_ALPHA; > > + break; > > + } > > + > > + return blend; > > +} > > + > > +static void sprd_dpu_layer(struct sprd_dpu *dpu, struct drm_plane_state *state) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + struct drm_gem_cma_object *cma_obj; > > + const struct drm_format_info *info; > > + struct drm_framebuffer *fb = state->fb; > > + u32 addr, size, offset, pitch, blend, format, rotation; > > + u32 src_x = state->src_x >> 16; > > + u32 src_y = state->src_y >> 16; > > + u32 src_w = state->src_w >> 16; > > + u32 src_h = state->src_h >> 16; > > + u32 dst_x = state->crtc_x; > > + u32 dst_y = state->crtc_y; > > + u32 alpha = state->alpha; > > + u32 index = state->zpos; > > + int i; > > + > > + offset = (dst_x & 0xffff) | (dst_y << 16); > > + size = (src_w & 0xffff) | (src_h << 16); > > + > > + for (i = 0; i < fb->format->num_planes; i++) { > > + cma_obj = drm_fb_cma_get_gem_obj(fb, i); > > + addr = cma_obj->paddr + fb->offsets[i]; > > + > > + if (i == 0) > > + layer_reg_wr(ctx, REG_LAY_BASE_ADDR0, addr, index); > > + else if (i == 1) > > + layer_reg_wr(ctx, REG_LAY_BASE_ADDR1, addr, index); > > + else > > + layer_reg_wr(ctx, REG_LAY_BASE_ADDR2, addr, index); > > + } > > + > > + info = drm_format_info(fb->format->format); > > Here fb->format is the result of drm_format_info(fb->format->format) > > > + if (fb->format->num_planes == 3) { > > + /* UV pitch is 1/2 of Y pitch */ > > + pitch = (fb->pitches[0] / info->cpp[0]) | > > + (fb->pitches[0] / info->cpp[0] << 15); > > + } else { > > + pitch = fb->pitches[0] / info->cpp[0]; > > + } > > + > > + layer_reg_wr(ctx, REG_LAY_POS, offset, index); > > + layer_reg_wr(ctx, REG_LAY_SIZE, size, index); > > + layer_reg_wr(ctx, REG_LAY_CROP_START, > > + src_y << 16 | src_x, index); > > + layer_reg_wr(ctx, REG_LAY_ALPHA, alpha, index); > > + layer_reg_wr(ctx, REG_LAY_PITCH, pitch, index); > > + > > + format = drm_format_to_dpu(fb); > > + blend = drm_blend_to_dpu(state); > > + rotation = drm_rotation_to_dpu(state); > > + > > + layer_reg_wr(ctx, REG_LAY_CTRL, BIT_DPU_LAY_EN | > > + format | > > + blend | > > + rotation, > > + index); > > +} > > + > > +static void sprd_dpu_flip(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + u32 reg_val; > > + > > + /* > > + * Make sure the dpu is in stop status. DPU has no shadow > > + * registers in EDPI mode. So the config registers can only be > > + * updated in the rising edge of DPU_RUN bit. > > + */ > > + if (ctx->if_type == SPRD_DPU_IF_EDPI) > > + dpu_wait_stop_done(dpu); > > + > > + /* update trigger and wait */ > > + if (ctx->if_type == SPRD_DPU_IF_DPI) { > > + if (!ctx->stopped) { > > + dpu_reg_set(ctx, REG_DPU_CTRL, BIT_DPU_REG_UPDATE); > > + dpu_wait_update_done(dpu); > > + } > > + > > + dpu_reg_set(ctx, REG_DPU_INT_EN, BIT_DPU_INT_ERR); > > + } else if (ctx->if_type == SPRD_DPU_IF_EDPI) { > > + dpu_reg_set(ctx, REG_DPU_CTRL, BIT_DPU_RUN); > > + > > + ctx->stopped = false; > > + } > > + > > + /* > > + * If the following interrupt was disabled in isr, > > + * re-enable it. > > + */ > > + reg_val = BIT_DPU_INT_MMU_VAOR_RD | > > + BIT_DPU_INT_MMU_VAOR_WR | > > + BIT_DPU_INT_MMU_INV_RD | > > + BIT_DPU_INT_MMU_INV_WR; > > + dpu_reg_set(ctx, REG_DPU_INT_EN, reg_val); > > +} > > + > > +static void sprd_dpu_init(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + u32 size; > > + > > + writel(0x00, ctx->base + REG_BG_COLOR); > > + > > + size = (ctx->vm.vactive << 16) | ctx->vm.hactive; > > + writel(size, ctx->base + REG_PANEL_SIZE); > > + writel(size, ctx->base + REG_BLEND_SIZE); > > + > > + writel(0x00, ctx->base + REG_MMU_EN); > > + writel(0x00, ctx->base + REG_MMU_PPN1); > > + writel(0xffff, ctx->base + REG_MMU_RANGE1); > > + writel(0x00, ctx->base + REG_MMU_PPN2); > > + writel(0xffff, ctx->base + REG_MMU_RANGE2); > > + writel(0x1ffff, ctx->base + REG_MMU_VPN_RANGE); > > +} > > + > > +static void sprd_dpu_fini(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + > > + writel(0x00, ctx->base + REG_DPU_INT_EN); > > + writel(0xff, ctx->base + REG_DPU_INT_CLR); > > +} > > + > > +static void sprd_dpi_init(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + u32 int_mask = 0; > > + u32 reg_val; > > + > > + if (ctx->if_type == SPRD_DPU_IF_DPI) { > > + /* use dpi as interface */ > > + dpu_reg_clr(ctx, REG_DPU_CFG0, BIT_DPU_IF_EDPI); > > + /* disable Halt function for SPRD DSI */ > > + dpu_reg_clr(ctx, REG_DPI_CTRL, BIT_DPU_DPI_HALT_EN); > > + /* select te from external pad */ > > + dpu_reg_set(ctx, REG_DPI_CTRL, BIT_DPU_EDPI_FROM_EXTERNAL_PAD); > > + > > + /* set dpi timing */ > > + reg_val = ctx->vm.hsync_len << 0 | > > + ctx->vm.hback_porch << 8 | > > + ctx->vm.hfront_porch << 20; > > + writel(reg_val, ctx->base + REG_DPI_H_TIMING); > > + > > + reg_val = ctx->vm.vsync_len << 0 | > > + ctx->vm.vback_porch << 8 | > > + ctx->vm.vfront_porch << 20; > > + writel(reg_val, ctx->base + REG_DPI_V_TIMING); > > + > > + /* enable dpu update done INT */ > > + int_mask |= BIT_DPU_INT_UPDATE_DONE; > > + /* enable dpu done INT */ > > + int_mask |= BIT_DPU_INT_DONE; > > + /* enable dpu dpi vsync */ > > + int_mask |= BIT_DPU_INT_VSYNC; > > + /* enable dpu TE INT */ > > + int_mask |= BIT_DPU_INT_TE; > > + /* enable underflow err INT */ > > + int_mask |= BIT_DPU_INT_ERR; > > + } else if (ctx->if_type == SPRD_DPU_IF_EDPI) { > > + /* use edpi as interface */ > > + dpu_reg_set(ctx, REG_DPU_CFG0, BIT_DPU_IF_EDPI); > > + /* use external te */ > > + dpu_reg_set(ctx, REG_DPI_CTRL, BIT_DPU_EDPI_FROM_EXTERNAL_PAD); > > + /* enable te */ > > + dpu_reg_set(ctx, REG_DPI_CTRL, BIT_DPU_EDPI_TE_EN); > > + > > + /* enable stop done INT */ > > + int_mask |= BIT_DPU_INT_DONE; > > + /* enable TE INT */ > > + int_mask |= BIT_DPU_INT_TE; > > + } > > + > > + /* enable iommu va out of range read error INT */ > > + int_mask |= BIT_DPU_INT_MMU_VAOR_RD; > > + /* enable iommu va out of range write error INT */ > > + int_mask |= BIT_DPU_INT_MMU_VAOR_WR; > > + /* enable iommu invalid read error INT */ > > + int_mask |= BIT_DPU_INT_MMU_INV_RD; > > + /* enable iommu invalid write error INT */ > > + int_mask |= BIT_DPU_INT_MMU_INV_WR; > > + > > + writel(int_mask, ctx->base + REG_DPU_INT_EN); > > +} > > + > > +void sprd_dpu_run(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + > > + dpu_reg_set(ctx, REG_DPU_CTRL, BIT_DPU_RUN); > > + > > + ctx->stopped = false; > > +} > > + > > +void sprd_dpu_stop(struct sprd_dpu *dpu) > > +{ > > + struct dpu_context *ctx = &dpu->ctx; > > + > > + if (ctx->if_type == SPRD_DPU_IF_DPI) > > + dpu_reg_set(ctx, REG_DPU_CTRL, BIT_DPU_STOP); > > + > > + dpu_wait_stop_done(dpu); > > +} > > + > > +static int sprd_plane_atomic_check(struct drm_plane *plane, > > + struct drm_atomic_state *state) > > +{ > > + struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state, > > + plane); > > + struct drm_crtc_state *crtc_state; > > + u32 fmt; > > + > > + if (!plane_state->fb || !plane_state->crtc) > > + return 0; > > + > > + fmt = drm_format_to_dpu(plane_state->fb); > > + if (!fmt) > > + return -EINVAL; > > + > > + crtc_state = drm_atomic_get_crtc_state(plane_state->state, plane_state->crtc); > > + if (IS_ERR(crtc_state)) > > + return PTR_ERR(crtc_state); > > + > > + return drm_atomic_helper_check_plane_state(plane_state, crtc_state, > > + DRM_PLANE_HELPER_NO_SCALING, > > + DRM_PLANE_HELPER_NO_SCALING, > > + true, true); > > +} > > + > > +static void sprd_plane_atomic_update(struct drm_plane *drm_plane, > > + struct drm_atomic_state *state) > > +{ > > + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, > > + drm_plane); > > + struct sprd_dpu *dpu = to_sprd_crtc(new_state->crtc); > > + > > + /* start configure dpu layers */ > > + sprd_dpu_layer(dpu, new_state); > > +} > > + > > +static void sprd_plane_atomic_disable(struct drm_plane *drm_plane, > > + struct drm_atomic_state *state) > > +{ > > + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, > > + drm_plane); > > + struct sprd_dpu *dpu = to_sprd_crtc(old_state->crtc); > > + > > + layer_reg_wr(&dpu->ctx, REG_LAY_CTRL, 0x00, old_state->zpos); > > +} > > + > > +static void sprd_plane_create_properties(struct sprd_plane *plane, int index) > > +{ > > + unsigned int supported_modes = BIT(DRM_MODE_BLEND_PIXEL_NONE) | > > + BIT(DRM_MODE_BLEND_PREMULTI) | > > + BIT(DRM_MODE_BLEND_COVERAGE); > > + > > + /* create rotation property */ > > + drm_plane_create_rotation_property(&plane->base, > > + DRM_MODE_ROTATE_0, > > + DRM_MODE_ROTATE_MASK | > > + DRM_MODE_REFLECT_MASK); > > + > > + /* create alpha property */ > > + drm_plane_create_alpha_property(&plane->base); > > + > > + /* create blend mode property */ > > + drm_plane_create_blend_mode_property(&plane->base, supported_modes); > > + > > + /* create zpos property */ > > + drm_plane_create_zpos_immutable_property(&plane->base, index); > > +} > > + > > +static const struct drm_plane_helper_funcs sprd_plane_helper_funcs = { > > + .atomic_check = sprd_plane_atomic_check, > > + .atomic_update = sprd_plane_atomic_update, > > + .atomic_disable = sprd_plane_atomic_disable, > > +}; > > + > > +static const struct drm_plane_funcs sprd_plane_funcs = { > > + .update_plane = drm_atomic_helper_update_plane, > > + .disable_plane = drm_atomic_helper_disable_plane, > > + .destroy = drm_plane_cleanup, > > + .reset = drm_atomic_helper_plane_reset, > > + .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, > > + .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, > > +}; > > + > > +static struct sprd_plane *sprd_planes_init(struct drm_device *drm) > > +{ > > + struct sprd_plane *plane, *primary; > > + enum drm_plane_type plane_type; > > + int i; > > + > > + for (i = 0; i < 6; i++) { > > + plane_type = (i == 0) ? DRM_PLANE_TYPE_PRIMARY : > > + DRM_PLANE_TYPE_OVERLAY; > > + > > + plane = drmm_universal_plane_alloc(drm, struct sprd_plane, base, > > + 1, &sprd_plane_funcs, > > + layer_fmts, ARRAY_SIZE(layer_fmts), > > + NULL, plane_type, NULL); > > + if (IS_ERR(plane)) { > > + drm_err(drm, "failed to init drm plane: %d\n", i); > > + return plane; > > + } > > + > > + drm_plane_helper_add(&plane->base, &sprd_plane_helper_funcs); > > + > > + sprd_plane_create_properties(plane, i); > > + > > + if (i == 0) > > + primary = plane; > > + } > > + > > + return primary; > > +} > > + > > +static void sprd_crtc_mode_set_nofb(struct drm_crtc *crtc) > > +{ > > + struct sprd_dpu *dpu = to_sprd_crtc(crtc); > > + struct drm_display_mode *mode = &crtc->state->adjusted_mode; > > + > > + if (mode->type & DRM_MODE_TYPE_PREFERRED) > > + drm_display_mode_to_videomode(mode, &dpu->ctx.vm); > > What happens if the mode isn't a preferred mode? > > > +} > > + > > +static void sprd_crtc_atomic_enable(struct drm_crtc *crtc, > > + struct drm_atomic_state *state) > > +{ > > + struct sprd_dpu *dpu = to_sprd_crtc(crtc); > > + > > + sprd_dpu_init(dpu); > > I guess that call would fail here or program a bogus value. We already > discussed this in the previous version, but I'm really not sure why you > need this in the first place. Just use the crtc_state->adjusted_mode and > program that. > > > + sprd_dpi_init(dpu); > > + > > + enable_irq(dpu->ctx.irq); > > + > > + drm_crtc_vblank_on(&dpu->base); > > +} > > + > > +static void sprd_crtc_atomic_disable(struct drm_crtc *crtc, > > + struct drm_atomic_state *state) > > +{ > > + struct sprd_dpu *dpu = to_sprd_crtc(crtc); > > + struct drm_device *drm = dpu->base.dev; > > + > > + drm_crtc_vblank_off(&dpu->base); > > + > > + disable_irq(dpu->ctx.irq); > > + > > + sprd_dpu_fini(dpu); > > + > > + spin_lock_irq(&drm->event_lock); > > + if (crtc->state->event) { > > + drm_crtc_send_vblank_event(crtc, crtc->state->event); > > + crtc->state->event = NULL; > > + } > > + spin_unlock_irq(&drm->event_lock); > > +} > > + > > +static void sprd_crtc_atomic_flush(struct drm_crtc *crtc, > > + struct drm_atomic_state *state) > > + > > +{ > > + struct sprd_dpu *dpu = to_sprd_crtc(crtc); > > + struct drm_device *drm = dpu->base.dev; > > + > > + sprd_dpu_flip(dpu); > > + > > + spin_lock_irq(&drm->event_lock); > > + if (crtc->state->event) { > > + drm_crtc_send_vblank_event(crtc, crtc->state->event); > > + crtc->state->event = NULL; > > + } > > + spin_unlock_irq(&drm->event_lock); > > +} > > + > > +static int sprd_crtc_enable_vblank(struct drm_crtc *crtc) > > +{ > > + struct sprd_dpu *dpu = to_sprd_crtc(crtc); > > + > > + dpu_reg_set(&dpu->ctx, REG_DPU_INT_EN, BIT_DPU_INT_VSYNC); > > + > > + return 0; > > +} > > + > > +static void sprd_crtc_disable_vblank(struct drm_crtc *crtc) > > +{ > > + struct sprd_dpu *dpu = to_sprd_crtc(crtc); > > + > > + dpu_reg_clr(&dpu->ctx, REG_DPU_INT_EN, BIT_DPU_INT_VSYNC); > > +} > > + > > +static const struct drm_crtc_helper_funcs sprd_crtc_helper_funcs = { > > + .mode_set_nofb = sprd_crtc_mode_set_nofb, > > + .atomic_flush = sprd_crtc_atomic_flush, > > + .atomic_enable = sprd_crtc_atomic_enable, > > + .atomic_disable = sprd_crtc_atomic_disable, > > +}; > > + > > +static const struct drm_crtc_funcs sprd_crtc_funcs = { > > + .destroy = drm_crtc_cleanup, > > + .set_config = drm_atomic_helper_set_config, > > + .page_flip = drm_atomic_helper_page_flip, > > + .reset = drm_atomic_helper_crtc_reset, > > + .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, > > + .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, > > + .enable_vblank = sprd_crtc_enable_vblank, > > + .disable_vblank = sprd_crtc_disable_vblank, > > +}; > > + > > +static struct sprd_dpu *sprd_crtc_init(struct drm_device *drm, > > + struct drm_plane *primary, struct device *dev) > > +{ > > + struct device_node *port; > > + struct sprd_dpu *dpu; > > + > > + dpu = drmm_crtc_alloc_with_planes(drm, struct sprd_dpu, base, > > + primary, NULL, > > + &sprd_crtc_funcs, NULL); > > + if (IS_ERR(dpu)) { > > + drm_err(drm, "failed to init crtc\n"); > > + return dpu; > > + } > > + drm_crtc_helper_add(&dpu->base, &sprd_crtc_helper_funcs); > > + > > + /* > > + * set crtc port so that drm_of_find_possible_crtcs call works > > + */ > > + port = of_graph_get_port_by_id(dev->of_node, 0); > > + if (!port) { > > + drm_err(drm, "failed to found crtc output port for %s\n", > > + dev->of_node->full_name); > > + return ERR_PTR(-EINVAL); > > + } > > + dpu->base.port = port; > > + of_node_put(port); > > + > > + return dpu; > > +} > > + > > +static irqreturn_t sprd_dpu_isr(int irq, void *data) > > +{ > > + struct sprd_dpu *dpu = data; > > + struct dpu_context *ctx = &dpu->ctx; > > + u32 reg_val, int_mask = 0; > > + > > + reg_val = readl(ctx->base + REG_DPU_INT_STS); > > + > > + /* disable err interrupt */ > > + if (reg_val & BIT_DPU_INT_ERR) { > > + int_mask |= BIT_DPU_INT_ERR; > > + drm_warn(dpu->drm, "Warning: dpu underflow!\n"); > > + } > > + > > + /* dpu update done isr */ > > + if (reg_val & BIT_DPU_INT_UPDATE_DONE) { > > + ctx->evt_update = true; > > + wake_up_interruptible_all(&ctx->wait_queue); > > + } > > + > > + /* dpu stop done isr */ > > + if (reg_val & BIT_DPU_INT_DONE) { > > + ctx->evt_stop = true; > > + wake_up_interruptible_all(&ctx->wait_queue); > > + } > > + > > + if (reg_val & BIT_DPU_INT_VSYNC) > > + drm_crtc_handle_vblank(&dpu->base); > > + > > + int_mask |= check_mmu_isr(dpu, reg_val); > > + > > + writel(reg_val, ctx->base + REG_DPU_INT_CLR); > > + dpu_reg_clr(ctx, REG_DPU_INT_EN, int_mask); > > + > > + return IRQ_HANDLED; > > +} > > + > > +static int sprd_dpu_context_init(struct sprd_dpu *dpu, > > + struct device *dev) > > +{ > > + struct platform_device *pdev = to_platform_device(dev); > > + struct dpu_context *ctx = &dpu->ctx; > > + struct resource *res; > > + int ret; > > + > > + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > > + ctx->base = devm_ioremap(dev, res->start, resource_size(res)); > > + if (!ctx->base) { > > + dev_err(dev, "failed to map dpu registers\n"); > > + return -EFAULT; > > + } > > + > > + ctx->irq = platform_get_irq(pdev, 0); > > + if (ctx->irq < 0) { > > + dev_err(dev, "failed to get dpu irq\n"); > > + return ctx->irq; > > + } > > + > > + irq_set_status_flags(ctx->irq, IRQ_NOAUTOEN); > > + ret = devm_request_irq(dev, ctx->irq, sprd_dpu_isr, > > + 0, "DPU", dpu); > > + if (ret) { > > + dev_err(dev, "failed to register dpu irq handler\n"); > > + return ret; > > + } > > We discussed this in the previous version. You should mask / clear all > the interrupts before calling request_irq, and then just unmask the > vblank one in enable/disable_vblank, you don't need those enable_irq / > disable_irq calls in the rest of your driver. > > Maxime _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel