Adds DPU(Display Processor Unit) support for the Unisoc's display subsystem. It's support multi planes, scaler, rotation, PQ(Picture Quality) and more.
Cc: Orson Zhai orsonzhai@gmail.com Cc: Baolin Wang baolin.wang@linaro.org Cc: Chunyan Zhang zhang.lyra@gmail.com Signed-off-by: Kevin Tang kevin.tang@unisoc.com --- drivers/gpu/drm/sprd/Makefile | 6 +- drivers/gpu/drm/sprd/disp_lib.c | 59 +++ drivers/gpu/drm/sprd/disp_lib.h | 21 + drivers/gpu/drm/sprd/dpu/Makefile | 7 + drivers/gpu/drm/sprd/dpu/dpu_r2p0.c | 787 ++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/sprd/sprd_dpu.c | 678 +++++++++++++++++++++++++++++++ drivers/gpu/drm/sprd/sprd_dpu.h | 130 ++++++ drivers/gpu/drm/sprd/sprd_drm.c | 1 + drivers/gpu/drm/sprd/sprd_drm.h | 2 + 9 files changed, 1690 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/sprd/disp_lib.c create mode 100644 drivers/gpu/drm/sprd/disp_lib.h create mode 100644 drivers/gpu/drm/sprd/dpu/Makefile create mode 100644 drivers/gpu/drm/sprd/dpu/dpu_r2p0.c 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/Makefile b/drivers/gpu/drm/sprd/Makefile index 63b8751..c94c8ac 100644 --- a/drivers/gpu/drm/sprd/Makefile +++ b/drivers/gpu/drm/sprd/Makefile @@ -4,4 +4,8 @@ ccflags-y += -Iinclude/drm
subdir-ccflags-y += -I$(src)
-obj-y := sprd_drm.o +obj-y := sprd_drm.o \ + sprd_dpu.o + +obj-y += disp_lib.o +obj-y += dpu/ diff --git a/drivers/gpu/drm/sprd/disp_lib.c b/drivers/gpu/drm/sprd/disp_lib.c new file mode 100644 index 0000000..c887822 --- /dev/null +++ b/drivers/gpu/drm/sprd/disp_lib.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Unisoc Inc. + */ + +#define pr_fmt(__fmt) "[drm][%20s] "__fmt, __func__ + +#include <linux/device.h> +#include <linux/module.h> +#include <linux/of_graph.h> +#include <linux/of_platform.h> +#include <linux/slab.h> + +#include "disp_lib.h" + +struct device *sprd_disp_pipe_get_by_port(struct device *dev, int port) +{ + struct device_node *np = dev->of_node; + struct device_node *endpoint; + struct device_node *remote_node; + struct platform_device *remote_pdev; + + endpoint = of_graph_get_endpoint_by_regs(np, port, 0); + if (!endpoint) { + DRM_ERROR("%s/port%d/endpoint0 was not found\n", + np->full_name, port); + return NULL; + } + + remote_node = of_graph_get_remote_port_parent(endpoint); + if (!remote_node) { + DRM_ERROR("device node was not found by endpoint0\n"); + return NULL; + } + + remote_pdev = of_find_device_by_node(remote_node); + if (remote_pdev == NULL) { + DRM_ERROR("find %s platform device failed\n", + remote_node->full_name); + return NULL; + } + + return &remote_pdev->dev; +} + +struct device *sprd_disp_pipe_get_input(struct device *dev) +{ + return sprd_disp_pipe_get_by_port(dev, 1); +} + +struct device *sprd_disp_pipe_get_output(struct device *dev) +{ + return sprd_disp_pipe_get_by_port(dev, 0); +} + +MODULE_AUTHOR("Leon He leon.he@unisoc.com"); +MODULE_AUTHOR("Kevin Tang kevin.tang@unisoc.com"); +MODULE_DESCRIPTION("Unisoc display common API library"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/sprd/disp_lib.h b/drivers/gpu/drm/sprd/disp_lib.h new file mode 100644 index 0000000..2c9abd7 --- /dev/null +++ b/drivers/gpu/drm/sprd/disp_lib.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 Unisoc Inc. + */ + +#ifndef _DISP_LIB_H_ +#define _DISP_LIB_H_ + +#include <linux/list.h> +#include <drm/drm_print.h> + +#ifdef pr_fmt +#undef pr_fmt +#define pr_fmt(__fmt) "[drm][%20s] "__fmt, __func__ +#endif + +struct device *sprd_disp_pipe_get_by_port(struct device *dev, int port); +struct device *sprd_disp_pipe_get_input(struct device *dev); +struct device *sprd_disp_pipe_get_output(struct device *dev); + +#endif diff --git a/drivers/gpu/drm/sprd/dpu/Makefile b/drivers/gpu/drm/sprd/dpu/Makefile new file mode 100644 index 0000000..73bd497 --- /dev/null +++ b/drivers/gpu/drm/sprd/dpu/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0 + +ifdef CONFIG_ARM64 +KBUILD_CFLAGS += -mstrict-align +endif + +obj-y += dpu_r2p0.o diff --git a/drivers/gpu/drm/sprd/dpu/dpu_r2p0.c b/drivers/gpu/drm/sprd/dpu/dpu_r2p0.c new file mode 100644 index 0000000..b96e2e2 --- /dev/null +++ b/drivers/gpu/drm/sprd/dpu/dpu_r2p0.c @@ -0,0 +1,787 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Unisoc Inc. + */ + +#include <linux/delay.h> +#include <linux/wait.h> +#include <linux/workqueue.h> +#include "sprd_dpu.h" + +#define DISPC_INT_FBC_PLD_ERR_MASK BIT(8) +#define DISPC_INT_FBC_HDR_ERR_MASK BIT(9) + +#define DISPC_INT_MMU_INV_WR_MASK BIT(19) +#define DISPC_INT_MMU_INV_RD_MASK BIT(18) +#define DISPC_INT_MMU_VAOR_WR_MASK BIT(17) +#define DISPC_INT_MMU_VAOR_RD_MASK BIT(16) + +struct layer_reg { + u32 addr[4]; + u32 ctrl; + u32 size; + u32 pitch; + u32 pos; + u32 alpha; + u32 ck; + u32 pallete; + u32 crop_start; +}; + +struct wb_region_reg { + u32 pos; + u32 size; +}; + +struct dpu_reg { + u32 dpu_version; + u32 dpu_ctrl; + u32 dpu_cfg0; + u32 dpu_cfg1; + u32 dpu_cfg2; + u32 dpu_secure; + u32 reserved_0x0018_0x001C[2]; + u32 panel_size; + u32 blend_size; + u32 reserved_0x0028; + u32 bg_color; + struct layer_reg layers[8]; + u32 wb_base_addr; + u32 wb_ctrl; + u32 wb_cfg; + u32 wb_pitch; + struct wb_region_reg region[3]; + u32 reserved_0x01D8_0x01DC[2]; + u32 dpu_int_en; + u32 dpu_int_clr; + u32 dpu_int_sts; + u32 dpu_int_raw; + u32 dpi_ctrl; + u32 dpi_h_timing; + u32 dpi_v_timing; + u32 reserved_0x01FC; + u32 dpu_enhance_cfg; + u32 reserved_0x0204_0x020C[3]; + u32 epf_epsilon; + u32 epf_gain0_3; + u32 epf_gain4_7; + u32 epf_diff; + u32 reserved_0x0220_0x023C[8]; + u32 hsv_lut_addr; + u32 hsv_lut_wdata; + u32 hsv_lut_rdata; + u32 reserved_0x024C_0x027C[13]; + u32 cm_coef01_00; + u32 cm_coef03_02; + u32 cm_coef11_10; + u32 cm_coef13_12; + u32 cm_coef21_20; + u32 cm_coef23_22; + u32 reserved_0x0298_0x02BC[10]; + u32 slp_cfg0; + u32 slp_cfg1; + u32 reserved_0x02C8_0x02FC[14]; + u32 gamma_lut_addr; + u32 gamma_lut_wdata; + u32 gamma_lut_rdata; + u32 reserved_0x030C_0x033C[13]; + u32 checksum_en; + u32 checksum0_start_pos; + u32 checksum0_end_pos; + u32 checksum1_start_pos; + u32 checksum1_end_pos; + u32 checksum0_result; + u32 checksum1_result; + u32 reserved_0x035C; + u32 dpu_sts[18]; + u32 reserved_0x03A8_0x03AC[2]; + u32 dpu_fbc_cfg0; + u32 dpu_fbc_cfg1; + u32 reserved_0x03B8_0x03EC[14]; + u32 rf_ram_addr; + u32 rf_ram_rdata_low; + u32 rf_ram_rdata_high; + u32 reserved_0x03FC_0x07FC[257]; + u32 mmu_en; + u32 mmu_update; + u32 mmu_min_vpn; + u32 mmu_vpn_range; + u32 mmu_pt_addr; + u32 mmu_default_page; + u32 mmu_vaor_addr_rd; + u32 mmu_vaor_addr_wr; + u32 mmu_inv_addr_rd; + u32 mmu_inv_addr_wr; + u32 mmu_uns_addr_rd; + u32 mmu_uns_addr_wr; + u32 mmu_miss_cnt; + u32 mmu_pt_update_qos; + u32 mmu_version; + u32 mmu_min_ppn1; + u32 mmu_ppn_range1; + u32 mmu_min_ppn2; + u32 mmu_ppn_range2; + u32 mmu_vpn_paor_rd; + u32 mmu_vpn_paor_wr; + u32 mmu_ppn_paor_rd; + u32 mmu_ppn_paor_wr; + u32 mmu_reg_au_manage; + u32 mmu_page_rd_ch; + u32 mmu_page_wr_ch; + u32 mmu_read_page_cmd_cnt; + u32 mmu_read_page_latency_cnt; + u32 mmu_page_max_latency; +}; + +static DECLARE_WAIT_QUEUE_HEAD(wait_queue); +static bool panel_ready = true; +static bool evt_update; +static bool evt_stop; + +static u32 dpu_get_version(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + return reg->dpu_version; +} + +static void dpu_dump(struct dpu_context *ctx) +{ + u32 *reg = (u32 *)ctx->base; + int i; + + pr_info(" 0 4 8 C\n"); + for (i = 0; i < 256; i += 4) { + pr_info("%04x: 0x%08x 0x%08x 0x%08x 0x%08x\n", + i * 4, reg[i], reg[i + 1], reg[i + 2], reg[i + 3]); + } +} + +static u32 check_mmu_isr(struct dpu_context *ctx, u32 reg_val) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + u32 mmu_mask = DISPC_INT_MMU_VAOR_RD_MASK | + DISPC_INT_MMU_VAOR_WR_MASK | + DISPC_INT_MMU_INV_RD_MASK | + DISPC_INT_MMU_INV_WR_MASK; + u32 val = reg_val & mmu_mask; + + if (val) { + pr_err("--- iommu interrupt err: 0x%04x ---\n", val); + + pr_err("iommu invalid read error, addr: 0x%08x\n", + reg->mmu_inv_addr_rd); + pr_err("iommu invalid write error, addr: 0x%08x\n", + reg->mmu_inv_addr_wr); + pr_err("iommu va out of range read error, addr: 0x%08x\n", + reg->mmu_vaor_addr_rd); + pr_err("iommu va out of range write error, addr: 0x%08x\n", + reg->mmu_vaor_addr_wr); + pr_err("BUG: iommu failure at %s:%d/%s()!\n", + __FILE__, __LINE__, __func__); + + dpu_dump(ctx); + } + + return val; +} + +static void dpu_clean_all(struct dpu_context *ctx) +{ + int i; + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + for (i = 0; i < 8; i++) + reg->layers[i].ctrl = 0; +} + +static u32 dpu_isr(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + u32 reg_val, int_mask = 0; + + reg_val = reg->dpu_int_sts; + + /* disable err interrupt */ + if (reg_val & DISPC_INT_ERR_MASK) + int_mask |= DISPC_INT_ERR_MASK; + + /* dpu update done isr */ + if (reg_val & DISPC_INT_UPDATE_DONE_MASK) { + evt_update = true; + wake_up_interruptible_all(&wait_queue); + } + + /* dpu stop done isr */ + if (reg_val & DISPC_INT_DONE_MASK) { + evt_stop = true; + wake_up_interruptible_all(&wait_queue); + } + + /* dpu ifbc payload error isr */ + if (reg_val & DISPC_INT_FBC_PLD_ERR_MASK) { + int_mask |= DISPC_INT_FBC_PLD_ERR_MASK; + pr_err("dpu ifbc payload error\n"); + } + + /* dpu ifbc header error isr */ + if (reg_val & DISPC_INT_FBC_HDR_ERR_MASK) { + int_mask |= DISPC_INT_FBC_HDR_ERR_MASK; + pr_err("dpu ifbc header error\n"); + } + + int_mask |= check_mmu_isr(ctx, reg_val); + + reg->dpu_int_clr = reg_val; + reg->dpu_int_en &= ~int_mask; + + return reg_val; +} + +static int dpu_wait_stop_done(struct dpu_context *ctx) +{ + int rc; + + if (ctx->is_stopped) + return 0; + + rc = wait_event_interruptible_timeout(wait_queue, evt_stop, + msecs_to_jiffies(500)); + evt_stop = false; + + ctx->is_stopped = true; + + if (!rc) { + pr_err("dpu wait for stop done time out!\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int dpu_wait_update_done(struct dpu_context *ctx) +{ + int rc; + + evt_update = false; + + rc = wait_event_interruptible_timeout(wait_queue, evt_update, + msecs_to_jiffies(500)); + + if (!rc) { + pr_err("dpu wait for reg update done time out!\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static void dpu_stop(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + if (ctx->if_type == SPRD_DISPC_IF_DPI) + reg->dpu_ctrl |= BIT(1); + + dpu_wait_stop_done(ctx); + + pr_info("dpu stop\n"); +} + +static void dpu_run(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + reg->dpu_ctrl |= BIT(0); + + ctx->is_stopped = false; + + pr_info("dpu run\n"); + + if (ctx->if_type == SPRD_DISPC_IF_EDPI) { + /* + * If the panel read GRAM speed faster than + * DSI write GRAM speed, it will display some + * mass on screen when backlight on. So wait + * a TE period after flush the GRAM. + */ + if (!panel_ready) { + dpu_wait_stop_done(ctx); + /* wait for TE again */ + mdelay(20); + panel_ready = true; + } + } +} + +static int dpu_init(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + u32 size; + + reg->bg_color = 0; + + size = (ctx->vm.vactive << 16) | ctx->vm.hactive; + reg->panel_size = size; + reg->blend_size = size; + + reg->dpu_cfg0 = BIT(4) | BIT(5); + + reg->dpu_cfg1 = 0x004466da; + reg->dpu_cfg2 = 0; + + if (ctx->is_stopped) + dpu_clean_all(ctx); + + reg->mmu_en = 0; + reg->mmu_min_ppn1 = 0; + reg->mmu_ppn_range1 = 0xffff; + reg->mmu_min_ppn2 = 0; + reg->mmu_ppn_range2 = 0xffff; + reg->mmu_vpn_range = 0x1ffff; + + reg->dpu_int_clr = 0xffff; + + return 0; +} + +static void dpu_uninit(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + reg->dpu_int_en = 0; + reg->dpu_int_clr = 0xff; + + panel_ready = false; +} + +enum { + DPU_LAYER_FORMAT_YUV422_2PLANE, + DPU_LAYER_FORMAT_YUV420_2PLANE, + DPU_LAYER_FORMAT_YUV420_3PLANE, + DPU_LAYER_FORMAT_ARGB8888, + DPU_LAYER_FORMAT_RGB565, + DPU_LAYER_FORMAT_XFBC_ARGB8888 = 8, + DPU_LAYER_FORMAT_XFBC_RGB565, + DPU_LAYER_FORMAT_MAX_TYPES, +}; + +enum { + DPU_LAYER_ROTATION_0, + DPU_LAYER_ROTATION_90, + DPU_LAYER_ROTATION_180, + DPU_LAYER_ROTATION_270, + DPU_LAYER_ROTATION_0_M, + DPU_LAYER_ROTATION_90_M, + DPU_LAYER_ROTATION_180_M, + DPU_LAYER_ROTATION_270_M, +}; + +static u32 to_dpu_rotation(u32 angle) +{ + u32 rot = DPU_LAYER_ROTATION_0; + + switch (angle) { + case 0: + case DRM_MODE_ROTATE_0: + rot = DPU_LAYER_ROTATION_0; + break; + case DRM_MODE_ROTATE_90: + rot = DPU_LAYER_ROTATION_90; + break; + case DRM_MODE_ROTATE_180: + rot = DPU_LAYER_ROTATION_180; + break; + case DRM_MODE_ROTATE_270: + rot = DPU_LAYER_ROTATION_270; + break; + case DRM_MODE_REFLECT_Y: + rot = DPU_LAYER_ROTATION_180_M; + break; + case (DRM_MODE_REFLECT_Y | DRM_MODE_ROTATE_90): + rot = DPU_LAYER_ROTATION_90_M; + break; + case DRM_MODE_REFLECT_X: + rot = DPU_LAYER_ROTATION_0_M; + break; + case (DRM_MODE_REFLECT_X | DRM_MODE_ROTATE_90): + rot = DPU_LAYER_ROTATION_270_M; + break; + default: + pr_err("rotation convert unsupport angle (drm)= 0x%x\n", angle); + break; + } + + return rot; +} + +static u32 dpu_img_ctrl(u32 format, u32 blending, u32 rotation) +{ + int reg_val = 0; + + /* layer enable */ + reg_val |= BIT(0); + + switch (format) { + case DRM_FORMAT_BGRA8888: + /* BGRA8888 -> ARGB8888 */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B3B2B1B0 << 8; + reg_val |= (DPU_LAYER_FORMAT_ARGB8888 << 4); + break; + case DRM_FORMAT_RGBX8888: + case DRM_FORMAT_RGBA8888: + /* RGBA8888 -> ABGR8888 */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B3B2B1B0 << 8; + case DRM_FORMAT_ABGR8888: + /* rb switch */ + reg_val |= BIT(10); + case DRM_FORMAT_ARGB8888: + reg_val |= (DPU_LAYER_FORMAT_ARGB8888 << 4); + break; + case DRM_FORMAT_XBGR8888: + /* rb switch */ + reg_val |= BIT(10); + case DRM_FORMAT_XRGB8888: + reg_val |= (DPU_LAYER_FORMAT_ARGB8888 << 4); + break; + case DRM_FORMAT_BGR565: + /* rb switch */ + reg_val |= BIT(10); + case DRM_FORMAT_RGB565: + reg_val |= (DPU_LAYER_FORMAT_RGB565 << 4); + break; + case DRM_FORMAT_NV12: + /* 2-Lane: Yuv420 */ + reg_val |= DPU_LAYER_FORMAT_YUV420_2PLANE << 4; + /* Y endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 8; + /* UV endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 10; + break; + case DRM_FORMAT_NV21: + /* 2-Lane: Yuv420 */ + reg_val |= DPU_LAYER_FORMAT_YUV420_2PLANE << 4; + /* Y endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 8; + /* UV endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B3B2B1B0 << 10; + break; + case DRM_FORMAT_NV16: + /* 2-Lane: Yuv422 */ + reg_val |= DPU_LAYER_FORMAT_YUV422_2PLANE << 4; + /* Y endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B3B2B1B0 << 8; + /* UV endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B3B2B1B0 << 10; + break; + case DRM_FORMAT_NV61: + /* 2-Lane: Yuv422 */ + reg_val |= DPU_LAYER_FORMAT_YUV422_2PLANE << 4; + /* Y endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 8; + /* UV endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 10; + break; + case DRM_FORMAT_YUV420: + reg_val |= DPU_LAYER_FORMAT_YUV420_3PLANE << 4; + /* Y endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 8; + /* UV endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 10; + break; + case DRM_FORMAT_YVU420: + reg_val |= DPU_LAYER_FORMAT_YUV420_3PLANE << 4; + /* Y endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B0B1B2B3 << 8; + /* UV endian */ + reg_val |= SPRD_IMG_DATA_ENDIAN_B3B2B1B0 << 10; + break; + default: + pr_err("error: invalid format %c%c%c%c\n", format, + format >> 8, + format >> 16, + format >> 24); + break; + } + + switch (blending) { + case DRM_MODE_BLEND_PIXEL_NONE: + /* don't do blending, maybe RGBX */ + /* alpha mode select - layer alpha */ + reg_val |= BIT(2); + break; + case DRM_MODE_BLEND_COVERAGE: + /* alpha mode select - combo alpha */ + reg_val |= BIT(3); + /*Normal mode*/ + reg_val &= (~BIT(16)); + break; + case DRM_MODE_BLEND_PREMULTI: + /* alpha mode select - combo alpha */ + reg_val |= BIT(3); + /*Pre-mult mode*/ + reg_val |= BIT(16); + break; + default: + /* alpha mode select - layer alpha */ + reg_val |= BIT(2); + break; + } + + rotation = to_dpu_rotation(rotation); + reg_val |= (rotation & 0x7) << 20; + + return reg_val; +} + +static void dpu_bgcolor(struct dpu_context *ctx, u32 color) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + if (ctx->if_type == SPRD_DISPC_IF_EDPI) + dpu_wait_stop_done(ctx); + + reg->bg_color = color; + + dpu_clean_all(ctx); + + if ((ctx->if_type == SPRD_DISPC_IF_DPI) && !ctx->is_stopped) { + reg->dpu_ctrl |= BIT(2); + dpu_wait_update_done(ctx); + } else if (ctx->if_type == SPRD_DISPC_IF_EDPI) { + reg->dpu_ctrl |= BIT(0); + ctx->is_stopped = false; + } +} + +static void dpu_layer(struct dpu_context *ctx, + struct sprd_dpu_layer *hwlayer) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + const struct drm_format_info *info; + struct layer_reg *layer; + u32 addr, size, offset; + int i; + + layer = ®->layers[hwlayer->index]; + offset = (hwlayer->dst_x & 0xffff) | ((hwlayer->dst_y) << 16); + + if (hwlayer->src_w && hwlayer->src_h) + size = (hwlayer->src_w & 0xffff) | ((hwlayer->src_h) << 16); + else + size = (hwlayer->dst_w & 0xffff) | ((hwlayer->dst_h) << 16); + + for (i = 0; i < hwlayer->planes; i++) { + addr = hwlayer->addr[i]; + + if (addr % 16) + pr_err("layer addr[%d] is not 16 bytes align, it's 0x%08x\n", + i, addr); + layer->addr[i] = addr; + } + + layer->pos = offset; + layer->size = size; + layer->crop_start = (hwlayer->src_y << 16) | hwlayer->src_x; + layer->alpha = hwlayer->alpha; + + info = drm_format_info(hwlayer->format); + if (info->cpp[0] == 0) { + pr_err("layer[%d] bytes per pixel is invalid\n", hwlayer->index); + return; + } + + if (hwlayer->planes == 3) + /* UV pitch is 1/2 of Y pitch*/ + layer->pitch = (hwlayer->pitch[0] / info->cpp[0]) | + (hwlayer->pitch[0] / info->cpp[0] << 15); + else + layer->pitch = hwlayer->pitch[0] / info->cpp[0]; + + layer->ctrl = dpu_img_ctrl(hwlayer->format, hwlayer->blending, + hwlayer->rotation); + + pr_debug("dst_x = %d, dst_y = %d, dst_w = %d, dst_h = %d\n", + hwlayer->dst_x, hwlayer->dst_y, + hwlayer->dst_w, hwlayer->dst_h); + pr_debug("start_x = %d, start_y = %d, start_w = %d, start_h = %d\n", + hwlayer->src_x, hwlayer->src_y, + hwlayer->src_w, hwlayer->src_h); +} + +static void dpu_flip(struct dpu_context *ctx, + struct sprd_dpu_layer layers[], u8 count) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + int i; + + /* + * Make sure the dpu is in stop status. DPU_R2P0 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_DISPC_IF_EDPI) + dpu_wait_stop_done(ctx); + + /* reset the bgcolor to black */ + reg->bg_color = 0; + + /* disable all the layers */ + dpu_clean_all(ctx); + + /* start configure dpu layers */ + for (i = 0; i < count; i++) + dpu_layer(ctx, &layers[i]); + + /* update trigger and wait */ + if (ctx->if_type == SPRD_DISPC_IF_DPI) { + if (!ctx->is_stopped) { + reg->dpu_ctrl |= BIT(2); + dpu_wait_update_done(ctx); + } + + reg->dpu_int_en |= DISPC_INT_ERR_MASK; + + } else if (ctx->if_type == SPRD_DISPC_IF_EDPI) { + reg->dpu_ctrl |= BIT(0); + + ctx->is_stopped = false; + } + + /* + * If the following interrupt was disabled in isr, + * re-enable it. + */ + reg->dpu_int_en |= DISPC_INT_FBC_PLD_ERR_MASK | + DISPC_INT_FBC_HDR_ERR_MASK | + DISPC_INT_MMU_VAOR_RD_MASK | + DISPC_INT_MMU_VAOR_WR_MASK | + DISPC_INT_MMU_INV_RD_MASK | + DISPC_INT_MMU_INV_WR_MASK; +} + +static void dpu_dpi_init(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + u32 int_mask = 0; + + if (ctx->if_type == SPRD_DISPC_IF_DPI) { + /* use dpi as interface */ + reg->dpu_cfg0 &= ~BIT(0); + + /* disable Halt function for SPRD DSI */ + reg->dpi_ctrl &= ~BIT(16); + + /* select te from external pad */ + reg->dpi_ctrl |= BIT(10); + + /* set dpi timing */ + reg->dpi_h_timing = (ctx->vm.hsync_len << 0) | + (ctx->vm.hback_porch << 8) | + (ctx->vm.hfront_porch << 20); + reg->dpi_v_timing = (ctx->vm.vsync_len << 0) | + (ctx->vm.vback_porch << 8) | + (ctx->vm.vfront_porch << 20); + if (ctx->vm.vsync_len + ctx->vm.vback_porch < 32) + pr_warn("Warning: (vsync + vbp) < 32, " + "underflow risk!\n"); + + /* enable dpu update done INT */ + int_mask |= DISPC_INT_UPDATE_DONE_MASK; + /* enable dpu DONE INT */ + int_mask |= DISPC_INT_DONE_MASK; + /* enable dpu dpi vsync */ + int_mask |= DISPC_INT_DPI_VSYNC_MASK; + /* enable dpu TE INT */ + int_mask |= DISPC_INT_TE_MASK; + /* enable underflow err INT */ + int_mask |= DISPC_INT_ERR_MASK; + /* enable write back done INT */ + int_mask |= DISPC_INT_WB_DONE_MASK; + /* enable write back fail INT */ + int_mask |= DISPC_INT_WB_FAIL_MASK; + + } else if (ctx->if_type == SPRD_DISPC_IF_EDPI) { + /* use edpi as interface */ + reg->dpu_cfg0 |= BIT(0); + + /* use external te */ + reg->dpi_ctrl |= BIT(10); + + /* enable te */ + reg->dpi_ctrl |= BIT(8); + + /* enable stop DONE INT */ + int_mask |= DISPC_INT_DONE_MASK; + /* enable TE INT */ + int_mask |= DISPC_INT_TE_MASK; + } + + /* enable ifbc payload error INT */ + int_mask |= DISPC_INT_FBC_PLD_ERR_MASK; + /* enable ifbc header error INT */ + int_mask |= DISPC_INT_FBC_HDR_ERR_MASK; + /* enable iommu va out of range read error INT */ + int_mask |= DISPC_INT_MMU_VAOR_RD_MASK; + /* enable iommu va out of range write error INT */ + int_mask |= DISPC_INT_MMU_VAOR_WR_MASK; + /* enable iommu invalid read error INT */ + int_mask |= DISPC_INT_MMU_INV_RD_MASK; + /* enable iommu invalid write error INT */ + int_mask |= DISPC_INT_MMU_INV_WR_MASK; + + reg->dpu_int_en = int_mask; +} + +static void enable_vsync(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + reg->dpu_int_en |= DISPC_INT_DPI_VSYNC_MASK; +} + +static void disable_vsync(struct dpu_context *ctx) +{ + struct dpu_reg *reg = (struct dpu_reg *)ctx->base; + + reg->dpu_int_en &= ~DISPC_INT_DPI_VSYNC_MASK; +} + +static const u32 primary_fmts[] = { + DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888, + DRM_FORMAT_ARGB8888, DRM_FORMAT_ABGR8888, + DRM_FORMAT_RGBA8888, DRM_FORMAT_BGRA8888, + DRM_FORMAT_RGBX8888, DRM_FORMAT_BGRX8888, + DRM_FORMAT_RGB565, DRM_FORMAT_BGR565, + DRM_FORMAT_NV12, DRM_FORMAT_NV21, + DRM_FORMAT_NV16, DRM_FORMAT_NV61, + DRM_FORMAT_YUV420, DRM_FORMAT_YVU420, +}; + +static int dpu_capability(struct dpu_context *ctx, + struct dpu_capability *cap) +{ + if (!cap) + return -EINVAL; + + cap->max_layers = 6; + cap->fmts_ptr = primary_fmts; + cap->fmts_cnt = ARRAY_SIZE(primary_fmts); + + return 0; +} + +struct dpu_core_ops sharkl3_dpu_core_ops = { + .version = dpu_get_version, + .init = dpu_init, + .uninit = dpu_uninit, + .run = dpu_run, + .stop = dpu_stop, + .isr = dpu_isr, + .ifconfig = dpu_dpi_init, + .capability = dpu_capability, + .flip = dpu_flip, + .bg_color = dpu_bgcolor, + .enable_vsync = enable_vsync, + .disable_vsync = disable_vsync, +}; diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c new file mode 100644 index 0000000..331f236 --- /dev/null +++ b/drivers/gpu/drm/sprd/sprd_dpu.c @@ -0,0 +1,678 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Unisoc Inc. + */ + +#include <linux/component.h> +#include <linux/dma-buf.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/of_irq.h> +#include <linux/pm_runtime.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" + +struct sprd_plane { + struct drm_plane plane; + u32 index; +}; + +static int sprd_dpu_init(struct sprd_dpu *dpu); +static int sprd_dpu_uninit(struct sprd_dpu *dpu); + +static inline struct sprd_plane *to_sprd_plane(struct drm_plane *plane) +{ + return container_of(plane, struct sprd_plane, plane); +} + +static int sprd_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + DRM_DEBUG("%s()\n", __func__); + + return 0; +} + +static void sprd_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct drm_plane_state *state = plane->state; + struct drm_framebuffer *fb = plane->state->fb; + struct drm_gem_cma_object *cma_obj; + struct sprd_plane *p = to_sprd_plane(plane); + struct sprd_dpu *dpu = crtc_to_dpu(plane->state->crtc); + struct sprd_dpu_layer *layer = &dpu->layers[p->index]; + int i; + + if (plane->state->crtc->state->active_changed) { + DRM_DEBUG("resume or suspend, no need to update plane\n"); + return; + } + + layer->index = p->index; + layer->src_x = state->src_x >> 16; + layer->src_y = state->src_y >> 16; + layer->src_w = state->src_w >> 16; + layer->src_h = state->src_h >> 16; + layer->dst_x = state->crtc_x; + layer->dst_y = state->crtc_y; + layer->dst_w = state->crtc_w; + layer->dst_h = state->crtc_h; + layer->alpha = state->alpha; + layer->blending = state->pixel_blend_mode; + layer->rotation = state->rotation; + layer->planes = fb->format->num_planes; + layer->format = fb->format->format; + + DRM_DEBUG("%s() alpha = %u, blending = %u, rotation = %u\n", + __func__, layer->alpha, layer->blending, layer->rotation); + + for (i = 0; i < layer->planes; i++) { + cma_obj = drm_fb_cma_get_gem_obj(fb, i); + layer->addr[i] = cma_obj->paddr + fb->offsets[i]; + layer->pitch[i] = fb->pitches[i]; + } + + dpu->pending_planes++; +} + +static void sprd_plane_atomic_disable(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct sprd_plane *p = to_sprd_plane(plane); + + /* + * NOTE: + * The dpu->core->flip() will disable all the planes each time. + * So there is no need to impliment the atomic_disable() function. + * But this function can not be removed, because it will change + * to call atomic_update() callback instead. Which will cause + * kernel panic in sprd_plane_atomic_update(). + * + * We do nothing here but just print a debug log. + */ + DRM_DEBUG("%s() layer_id = %u\n", __func__, p->index); +} + +static int sprd_plane_create_properties(struct sprd_plane *p, 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(&p->plane, + DRM_MODE_ROTATE_0, + DRM_MODE_ROTATE_MASK | + DRM_MODE_REFLECT_MASK); + + /* create alpha property */ + drm_plane_create_alpha_property(&p->plane); + + /* create blend mode property */ + drm_plane_create_blend_mode_property(&p->plane, supported_modes); + + /* create zpos property */ + drm_plane_create_zpos_immutable_property(&p->plane, index); + + return 0; +} + +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 drm_plane *sprd_plane_init(struct drm_device *drm, + struct sprd_dpu *dpu) +{ + struct drm_plane *primary = NULL; + struct sprd_plane *p = NULL; + struct dpu_capability cap = {}; + int err, i; + + if (dpu->core && dpu->core->capability) + dpu->core->capability(&dpu->ctx, &cap); + + dpu->layers = devm_kcalloc(drm->dev, cap.max_layers, + sizeof(struct sprd_dpu_layer), GFP_KERNEL); + if (!dpu->layers) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < cap.max_layers; i++) { + + p = devm_kzalloc(drm->dev, sizeof(*p), GFP_KERNEL); + if (!p) + return ERR_PTR(-ENOMEM); + + err = drm_universal_plane_init(drm, &p->plane, 1, + &sprd_plane_funcs, cap.fmts_ptr, + cap.fmts_cnt, NULL, + DRM_PLANE_TYPE_PRIMARY, NULL); + if (err) { + DRM_ERROR("fail to init primary plane\n"); + return ERR_PTR(err); + } + + drm_plane_helper_add(&p->plane, &sprd_plane_helper_funcs); + + sprd_plane_create_properties(p, i); + + p->index = i; + if (i == 0) + primary = &p->plane; + } + + if (p) + DRM_INFO("dpu plane init ok\n"); + + return primary; +} + +static void sprd_crtc_mode_set_nofb(struct drm_crtc *crtc) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + + if ((dpu->mode->hdisplay == dpu->mode->htotal) || + (dpu->mode->vdisplay == dpu->mode->vtotal)) + dpu->ctx.if_type = SPRD_DISPC_IF_EDPI; + else + dpu->ctx.if_type = SPRD_DISPC_IF_DPI; +} + +static enum drm_mode_status sprd_crtc_mode_valid(struct drm_crtc *crtc, + const struct drm_display_mode *mode) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + + DRM_INFO("%s() mode: "DRM_MODE_FMT"\n", __func__, DRM_MODE_ARG(mode)); + + if (mode->type & DRM_MODE_TYPE_DEFAULT) + dpu->mode = (struct drm_display_mode *)mode; + + if (mode->type & DRM_MODE_TYPE_PREFERRED) { + dpu->mode = (struct drm_display_mode *)mode; + drm_display_mode_to_videomode(dpu->mode, &dpu->ctx.vm); + } + + return MODE_OK; +} + +static void sprd_crtc_atomic_enable(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + static bool is_enabled = true; + + DRM_INFO("%s()\n", __func__); + + if (is_enabled) + is_enabled = false; + else + pm_runtime_get_sync(dpu->dev.parent); + + sprd_dpu_init(dpu); + + enable_irq(dpu->ctx.irq); +} + +static void sprd_crtc_atomic_disable(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + struct drm_device *drm = dpu->crtc.dev; + + DRM_INFO("%s()\n", __func__); + + disable_irq(dpu->ctx.irq); + + sprd_dpu_uninit(dpu); + + pm_runtime_put(dpu->dev.parent); + + 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_atomic_check(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + DRM_DEBUG("%s()\n", __func__); + + return 0; +} + +static void sprd_crtc_atomic_begin(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + + DRM_DEBUG("%s()\n", __func__); + + down(&dpu->ctx.refresh_lock); + + memset(dpu->layers, 0, sizeof(*dpu->layers) * dpu->pending_planes); + + dpu->pending_planes = 0; +} + +static void sprd_crtc_atomic_flush(struct drm_crtc *crtc, + struct drm_crtc_state *old_state) + +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + struct drm_device *drm = dpu->crtc.dev; + + DRM_DEBUG("%s()\n", __func__); + + if (dpu->core && dpu->core->flip && dpu->pending_planes) + dpu->core->flip(&dpu->ctx, dpu->layers, dpu->pending_planes); + + up(&dpu->ctx.refresh_lock); + + 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 = crtc_to_dpu(crtc); + + DRM_DEBUG("%s()\n", __func__); + + if (dpu->core && dpu->core->enable_vsync) + dpu->core->enable_vsync(&dpu->ctx); + + return 0; +} + +static void sprd_crtc_disable_vblank(struct drm_crtc *crtc) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + + DRM_DEBUG("%s()\n", __func__); + + if (dpu->core && dpu->core->disable_vsync) + dpu->core->disable_vsync(&dpu->ctx); +} + +static int sprd_crtc_create_properties(struct drm_crtc *crtc) +{ + struct sprd_dpu *dpu = crtc_to_dpu(crtc); + struct drm_device *drm = dpu->crtc.dev; + struct drm_property *prop; + struct drm_property_blob *blob; + size_t blob_size; + + blob_size = strlen(dpu->ctx.version) + 1; + + blob = drm_property_create_blob(dpu->crtc.dev, blob_size, + dpu->ctx.version); + if (IS_ERR(blob)) { + DRM_ERROR("drm_property_create_blob dpu version failed\n"); + return PTR_ERR(blob); + } + + /* create dpu version property */ + prop = drm_property_create(drm, + DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_BLOB, + "dpu version", 0); + if (!prop) { + DRM_ERROR("drm_property_create dpu version failed\n"); + return -ENOMEM; + } + drm_object_attach_property(&crtc->base, prop, blob->base.id); + + return 0; +} + +static const struct drm_crtc_helper_funcs sprd_crtc_helper_funcs = { + .mode_set_nofb = sprd_crtc_mode_set_nofb, + .mode_valid = sprd_crtc_mode_valid, + .atomic_check = sprd_crtc_atomic_check, + .atomic_begin = sprd_crtc_atomic_begin, + .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 int sprd_crtc_init(struct drm_device *drm, struct drm_crtc *crtc, + struct drm_plane *primary) +{ + struct device_node *port; + int err; + + /* + * set crtc port so that drm_of_find_possible_crtcs call works + */ + port = of_parse_phandle(drm->dev->of_node, "ports", 0); + if (!port) { + DRM_ERROR("find 'ports' phandle of %s failed\n", + drm->dev->of_node->full_name); + return -EINVAL; + } + of_node_put(port); + crtc->port = port; + + err = drm_crtc_init_with_planes(drm, crtc, primary, NULL, + &sprd_crtc_funcs, NULL); + if (err) { + DRM_ERROR("failed to init crtc.\n"); + return err; + } + + drm_mode_crtc_set_gamma_size(crtc, 256); + + drm_crtc_helper_add(crtc, &sprd_crtc_helper_funcs); + + sprd_crtc_create_properties(crtc); + + DRM_INFO("%s() ok\n", __func__); + return 0; +} + +int sprd_dpu_run(struct sprd_dpu *dpu) +{ + struct dpu_context *ctx = &dpu->ctx; + + down(&ctx->refresh_lock); + + if (!ctx->is_inited) { + DRM_ERROR("dpu is not initialized\n"); + up(&ctx->refresh_lock); + return -EINVAL; + } + + if (!ctx->is_stopped) { + up(&ctx->refresh_lock); + return 0; + } + + if (dpu->core && dpu->core->run) + dpu->core->run(ctx); + + up(&ctx->refresh_lock); + + drm_crtc_vblank_on(&dpu->crtc); + + return 0; +} + +int sprd_dpu_stop(struct sprd_dpu *dpu) +{ + struct dpu_context *ctx = &dpu->ctx; + + down(&ctx->refresh_lock); + + if (!ctx->is_inited) { + DRM_ERROR("dpu is not initialized\n"); + up(&ctx->refresh_lock); + return -EINVAL; + } + + if (ctx->is_stopped) { + up(&ctx->refresh_lock); + return 0; + } + + if (dpu->core && dpu->core->stop) + dpu->core->stop(ctx); + + up(&ctx->refresh_lock); + + drm_crtc_handle_vblank(&dpu->crtc); + drm_crtc_vblank_off(&dpu->crtc); + + return 0; +} + +static int sprd_dpu_init(struct sprd_dpu *dpu) +{ + struct dpu_context *ctx = &dpu->ctx; + + down(&ctx->refresh_lock); + + if (dpu->ctx.is_inited) { + up(&ctx->refresh_lock); + return 0; + } + + if (dpu->core && dpu->core->init) + dpu->core->init(ctx); + if (dpu->core && dpu->core->ifconfig) + dpu->core->ifconfig(ctx); + + ctx->is_inited = true; + + up(&ctx->refresh_lock); + + return 0; +} + +static int sprd_dpu_uninit(struct sprd_dpu *dpu) +{ + struct dpu_context *ctx = &dpu->ctx; + + down(&ctx->refresh_lock); + + if (!dpu->ctx.is_inited) { + up(&ctx->refresh_lock); + return 0; + } + + if (dpu->core && dpu->core->uninit) + dpu->core->uninit(ctx); + + ctx->is_inited = false; + + up(&ctx->refresh_lock); + + return 0; +} + +static irqreturn_t sprd_dpu_isr(int irq, void *data) +{ + struct sprd_dpu *dpu = data; + struct dpu_context *ctx = &dpu->ctx; + u32 int_mask = 0; + + if (dpu->core && dpu->core->isr) + int_mask = dpu->core->isr(ctx); + + if (int_mask & DISPC_INT_ERR_MASK) + DRM_WARN("Warning: dpu underflow!\n"); + + if ((int_mask & DISPC_INT_DPI_VSYNC_MASK) && ctx->is_inited) + drm_crtc_handle_vblank(&dpu->crtc); + + return IRQ_HANDLED; +} + +static int sprd_dpu_irq_request(struct sprd_dpu *dpu) +{ + int err; + int irq_num; + + irq_num = irq_of_parse_and_map(dpu->dev.of_node, 0); + if (!irq_num) { + DRM_ERROR("error: dpu parse irq num failed\n"); + return -EINVAL; + } + DRM_INFO("dpu irq_num = %d\n", irq_num); + + irq_set_status_flags(irq_num, IRQ_NOAUTOEN); + err = devm_request_irq(&dpu->dev, irq_num, sprd_dpu_isr, + 0, "DISPC", dpu); + if (err) { + DRM_ERROR("error: dpu request irq failed\n"); + return -EINVAL; + } + dpu->ctx.irq = irq_num; + + return 0; +} + +static int sprd_dpu_bind(struct device *dev, struct device *master, void *data) +{ + struct drm_device *drm = data; + struct sprd_dpu *dpu = dev_get_drvdata(dev); + struct drm_plane *plane; + int err; + + DRM_INFO("%s()\n", __func__); + + plane = sprd_plane_init(drm, dpu); + if (IS_ERR_OR_NULL(plane)) { + err = PTR_ERR(plane); + return err; + } + + err = sprd_crtc_init(drm, &dpu->crtc, plane); + if (err) + return err; + + sprd_dpu_irq_request(dpu); + + return 0; +} + +static void sprd_dpu_unbind(struct device *dev, struct device *master, + void *data) +{ + struct sprd_dpu *dpu = dev_get_drvdata(dev); + + DRM_INFO("%s()\n", __func__); + + drm_crtc_cleanup(&dpu->crtc); +} + +static const struct component_ops dpu_component_ops = { + .bind = sprd_dpu_bind, + .unbind = sprd_dpu_unbind, +}; + +static int sprd_dpu_context_init(struct sprd_dpu *dpu, + struct device_node *np) +{ + struct resource r; + struct dpu_context *ctx = &dpu->ctx; + + if (of_address_to_resource(np, 0, &r)) { + DRM_ERROR("parse dt base address failed\n"); + return -ENODEV; + } + ctx->base = (unsigned long)ioremap_nocache(r.start, + resource_size(&r)); + if (ctx->base == 0) { + DRM_ERROR("ioremap base address failed\n"); + return -EFAULT; + } + + sema_init(&ctx->refresh_lock, 1); + + return 0; +} + +static const struct dpu_ops sharkl3_dpu = { + .core = &sharkl3_dpu_core_ops, +}; + +static const struct of_device_id dpu_match_table[] = { + { .compatible = "sprd,sharkl3-dpu", + .data = &sharkl3_dpu }, + { }, +}; + +static int sprd_dpu_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + const struct of_device_id *of_id = + of_match_node(dpu_match_table, np); + const struct dpu_ops *pdata; + struct sprd_dpu *dpu; + int ret; + + dpu = devm_kzalloc(&pdev->dev, sizeof(*dpu), GFP_KERNEL); + if (!dpu) + return -ENOMEM; + + pdata = of_device_get_match_data(&pdev->dev); + if (pdata) { + dpu->core = pdata->core; + dpu->ctx.version = "dpu-r2p0"; + } else { + DRM_ERROR("Can't get %s ops data\n", of_id->name); + return -EINVAL; + } + + ret = sprd_dpu_context_init(dpu, np); + if (ret) + return ret; + + platform_set_drvdata(pdev, dpu); + + pm_runtime_set_active(&pdev->dev); + pm_runtime_get_noresume(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return component_add(&pdev->dev, &dpu_component_ops); +} + +static int sprd_dpu_remove(struct platform_device *pdev) +{ + component_del(&pdev->dev, &dpu_component_ops); + return 0; +} + +struct platform_driver sprd_dpu_driver = { + .probe = sprd_dpu_probe, + .remove = sprd_dpu_remove, + .driver = { + .name = "sprd-dpu-drv", + .of_match_table = dpu_match_table, + }, +}; + +MODULE_AUTHOR("Leon He leon.he@unisoc.com"); +MODULE_AUTHOR("Kevin Tang kevin.tang@unisoc.com"); +MODULE_DESCRIPTION("Unisoc Display Controller Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/sprd/sprd_dpu.h b/drivers/gpu/drm/sprd/sprd_dpu.h new file mode 100644 index 0000000..5941baa --- /dev/null +++ b/drivers/gpu/drm/sprd/sprd_dpu.h @@ -0,0 +1,130 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 Unisoc Inc. + */ + +#ifndef __SPRD_DPU_H__ +#define __SPRD_DPU_H__ + +#include <linux/bug.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/string.h> +#include <video/videomode.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_print.h> +#include <drm/drm_vblank.h> +#include <uapi/drm/drm_mode.h> +#include "disp_lib.h" + +#define DISPC_INT_DONE_MASK BIT(0) +#define DISPC_INT_TE_MASK BIT(1) +#define DISPC_INT_ERR_MASK BIT(2) +#define DISPC_INT_EDPI_TE_MASK BIT(3) +#define DISPC_INT_UPDATE_DONE_MASK BIT(4) +#define DISPC_INT_DPI_VSYNC_MASK BIT(5) +#define DISPC_INT_WB_DONE_MASK BIT(6) +#define DISPC_INT_WB_FAIL_MASK BIT(7) + +/* NOTE: this mask is not a realy dpu interrupt mask */ +#define DISPC_INT_FENCE_SIGNAL_REQUEST BIT(31) + +enum { + SPRD_DISPC_IF_DBI = 0, + SPRD_DISPC_IF_DPI, + SPRD_DISPC_IF_EDPI, + SPRD_DISPC_IF_LIMIT +}; + +enum { + SPRD_IMG_DATA_ENDIAN_B0B1B2B3 = 0, + SPRD_IMG_DATA_ENDIAN_B3B2B1B0, + SPRD_IMG_DATA_ENDIAN_B2B3B0B1, + SPRD_IMG_DATA_ENDIAN_B1B0B3B2, + SPRD_IMG_DATA_ENDIAN_LIMIT +}; + +struct sprd_dpu_layer { + u8 index; + u8 planes; + u32 addr[4]; + u32 pitch[4]; + s16 src_x; + s16 src_y; + s16 src_w; + s16 src_h; + s16 dst_x; + s16 dst_y; + u16 dst_w; + u16 dst_h; + u32 format; + u32 alpha; + u32 blending; + u32 rotation; +}; + +struct dpu_capability { + u32 max_layers; + const u32 *fmts_ptr; + u32 fmts_cnt; +}; + +struct dpu_context; + +struct dpu_core_ops { + u32 (*version)(struct dpu_context *ctx); + int (*init)(struct dpu_context *ctx); + void (*uninit)(struct dpu_context *ctx); + void (*run)(struct dpu_context *ctx); + void (*stop)(struct dpu_context *ctx); + void (*disable_vsync)(struct dpu_context *ctx); + void (*enable_vsync)(struct dpu_context *ctx); + u32 (*isr)(struct dpu_context *ctx); + void (*ifconfig)(struct dpu_context *ctx); + void (*flip)(struct dpu_context *ctx, + struct sprd_dpu_layer layers[], u8 count); + int (*capability)(struct dpu_context *ctx, + struct dpu_capability *cap); + void (*bg_color)(struct dpu_context *ctx, u32 color); +}; + +struct dpu_ops { + struct dpu_core_ops *core; +}; + +struct dpu_context { + unsigned long base; + const char *version; + int irq; + u8 if_type; + bool is_inited; + bool is_stopped; + struct videomode vm; + struct semaphore refresh_lock; +}; + +struct sprd_dpu { + struct device dev; + struct drm_crtc crtc; + struct dpu_context ctx; + struct dpu_core_ops *core; + struct drm_display_mode *mode; + struct sprd_dpu_layer *layers; + u8 pending_planes; +}; + +static inline struct sprd_dpu *crtc_to_dpu(struct drm_crtc *crtc) +{ + return crtc ? container_of(crtc, struct sprd_dpu, crtc) : NULL; +} + +int sprd_dpu_run(struct sprd_dpu *dpu); +int sprd_dpu_stop(struct sprd_dpu *dpu); + +extern struct dpu_core_ops sharkl3_dpu_core_ops; + +#endif diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c index 7cac098..6308285 100644 --- a/drivers/gpu/drm/sprd/sprd_drm.c +++ b/drivers/gpu/drm/sprd/sprd_drm.c @@ -266,6 +266,7 @@ static struct platform_driver sprd_drm_driver = {
static struct platform_driver *sprd_drm_drivers[] = { &sprd_drm_driver, + &sprd_dpu_driver, };
static int __init sprd_drm_init(void) diff --git a/drivers/gpu/drm/sprd/sprd_drm.h b/drivers/gpu/drm/sprd/sprd_drm.h index 137cb27..91b88c8 100644 --- a/drivers/gpu/drm/sprd/sprd_drm.h +++ b/drivers/gpu/drm/sprd/sprd_drm.h @@ -13,4 +13,6 @@ struct sprd_drm { struct drm_device *drm; };
+extern struct platform_driver sprd_dpu_driver; + #endif /* _SPRD_DRM_H_ */