1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * ST stm32 DMA2D - 2D Graphics Accelerator Driver 4 * 5 * Copyright (c) 2021 Dillon Min 6 * Dillon Min, <dillon.minfei@gmail.com> 7 * 8 * based on s5p-g2d 9 * 10 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 11 * Kamil Debski, <k.debski@samsung.com> 12 */ 13 14 #ifndef __DMA2D_H__ 15 #define __DMA2D_H__ 16 17 #include <linux/platform_device.h> 18 #include <media/v4l2-device.h> 19 #include <media/v4l2-ctrls.h> 20 21 #define DMA2D_NAME "stm-dma2d" 22 #define BUS_INFO "platform:stm-dma2d" 23 enum dma2d_op_mode { 24 DMA2D_MODE_M2M, 25 DMA2D_MODE_M2M_FPC, 26 DMA2D_MODE_M2M_BLEND, 27 DMA2D_MODE_R2M 28 }; 29 30 enum dma2d_cmode { 31 /* output pfc cmode from ARGB888 to ARGB4444 */ 32 DMA2D_CMODE_ARGB8888, 33 DMA2D_CMODE_RGB888, 34 DMA2D_CMODE_RGB565, 35 DMA2D_CMODE_ARGB1555, 36 DMA2D_CMODE_ARGB4444, 37 /* bg or fg pfc cmode from L8 to A4 */ 38 DMA2D_CMODE_L8, 39 DMA2D_CMODE_AL44, 40 DMA2D_CMODE_AL88, 41 DMA2D_CMODE_L4, 42 DMA2D_CMODE_A8, 43 DMA2D_CMODE_A4 44 }; 45 46 enum dma2d_alpha_mode { 47 DMA2D_ALPHA_MODE_NO_MODIF, 48 DMA2D_ALPHA_MODE_REPLACE, 49 DMA2D_ALPHA_MODE_COMBINE 50 }; 51 52 struct dma2d_fmt { 53 u32 fourcc; 54 int depth; 55 enum dma2d_cmode cmode; 56 }; 57 58 struct dma2d_frame { 59 /* Original dimensions */ 60 u32 width; 61 u32 height; 62 /* Crop size */ 63 u32 c_width; 64 u32 c_height; 65 /* Offset */ 66 u32 o_width; 67 u32 o_height; 68 u32 bottom; 69 u32 right; 70 u16 line_offset; 71 /* Image format */ 72 struct dma2d_fmt *fmt; 73 /* [0]: blue 74 * [1]: green 75 * [2]: red 76 * [3]: alpha 77 */ 78 u8 a_rgb[4]; 79 /* 80 * AM[1:0] of DMA2D_FGPFCCR 81 */ 82 enum dma2d_alpha_mode a_mode; 83 u32 size; 84 unsigned int sequence; 85 }; 86 87 struct dma2d_ctx { 88 struct v4l2_fh fh; 89 struct dma2d_dev *dev; 90 struct dma2d_frame cap; 91 struct dma2d_frame out; 92 struct dma2d_frame bg; 93 /* fb_buf always point to bg address */ 94 struct v4l2_framebuffer fb_buf; 95 /* 96 * MODE[17:16] of DMA2D_CR 97 */ 98 enum dma2d_op_mode op_mode; 99 struct v4l2_ctrl_handler ctrl_handler; 100 enum v4l2_colorspace colorspace; 101 enum v4l2_ycbcr_encoding ycbcr_enc; 102 enum v4l2_xfer_func xfer_func; 103 enum v4l2_quantization quant; 104 }; 105 106 struct dma2d_dev { 107 struct v4l2_device v4l2_dev; 108 struct v4l2_m2m_dev *m2m_dev; 109 struct video_device *vfd; 110 /* for device open/close etc */ 111 struct mutex mutex; 112 /* to avoid the conflict with device running and user setting 113 * at the same time 114 */ 115 spinlock_t ctrl_lock; 116 atomic_t num_inst; 117 void __iomem *regs; 118 struct clk *gate; 119 struct dma2d_ctx *curr; 120 int irq; 121 }; 122 123 void dma2d_start(struct dma2d_dev *d); 124 u32 dma2d_get_int(struct dma2d_dev *d); 125 void dma2d_clear_int(struct dma2d_dev *d); 126 void dma2d_config_out(struct dma2d_dev *d, struct dma2d_frame *frm, 127 dma_addr_t o_addr); 128 void dma2d_config_fg(struct dma2d_dev *d, struct dma2d_frame *frm, 129 dma_addr_t f_addr); 130 void dma2d_config_bg(struct dma2d_dev *d, struct dma2d_frame *frm, 131 dma_addr_t b_addr); 132 void dma2d_config_common(struct dma2d_dev *d, enum dma2d_op_mode op_mode, 133 u16 width, u16 height); 134 135 #endif /* __DMA2D_H__ */ 136