1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Samsung S5P G2D - 2D Graphics Accelerator Driver 4 * 5 * Copyright (c) 2011 Samsung Electronics Co., Ltd. 6 * Kamil Debski, <k.debski@samsung.com> 7 */ 8 9 #include <linux/io.h> 10 11 #include "g2d.h" 12 #include "g2d-regs.h" 13 14 #define w(x, a) writel((x), d->regs + (a)) 15 #define r(a) readl(d->regs + (a)) 16 17 /* g2d_reset clears all g2d registers */ 18 void g2d_reset(struct g2d_dev *d) 19 { 20 w(1, SOFT_RESET_REG); 21 } 22 23 void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f) 24 { 25 u32 n; 26 27 w(0, SRC_SELECT_REG); 28 w(f->stride & 0xFFFF, SRC_STRIDE_REG); 29 30 n = f->o_height & 0xFFF; 31 n <<= 16; 32 n |= f->o_width & 0xFFF; 33 w(n, SRC_LEFT_TOP_REG); 34 35 n = f->bottom & 0xFFF; 36 n <<= 16; 37 n |= f->right & 0xFFF; 38 w(n, SRC_RIGHT_BOTTOM_REG); 39 40 w(f->fmt->hw, SRC_COLOR_MODE_REG); 41 } 42 43 void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a) 44 { 45 w(a, SRC_BASE_ADDR_REG); 46 } 47 48 void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f) 49 { 50 u32 n; 51 52 w(0, DST_SELECT_REG); 53 w(f->stride & 0xFFFF, DST_STRIDE_REG); 54 55 n = f->o_height & 0xFFF; 56 n <<= 16; 57 n |= f->o_width & 0xFFF; 58 w(n, DST_LEFT_TOP_REG); 59 60 n = f->bottom & 0xFFF; 61 n <<= 16; 62 n |= f->right & 0xFFF; 63 w(n, DST_RIGHT_BOTTOM_REG); 64 65 w(f->fmt->hw, DST_COLOR_MODE_REG); 66 } 67 68 void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a) 69 { 70 w(a, DST_BASE_ADDR_REG); 71 } 72 73 void g2d_set_rop4(struct g2d_dev *d, u32 r) 74 { 75 w(r, ROP4_REG); 76 } 77 78 void g2d_set_flip(struct g2d_dev *d, u32 r) 79 { 80 w(r, SRC_MSK_DIRECT_REG); 81 } 82 83 void g2d_set_v41_stretch(struct g2d_dev *d, struct g2d_frame *src, 84 struct g2d_frame *dst) 85 { 86 w(DEFAULT_SCALE_MODE, SRC_SCALE_CTRL_REG); 87 88 /* inversed scaling factor: src is numerator */ 89 w((src->c_width << 16) / dst->c_width, SRC_XSCALE_REG); 90 w((src->c_height << 16) / dst->c_height, SRC_YSCALE_REG); 91 } 92 93 void g2d_set_cmd(struct g2d_dev *d, u32 c) 94 { 95 w(c, BITBLT_COMMAND_REG); 96 } 97 98 void g2d_start(struct g2d_dev *d) 99 { 100 /* Clear cache */ 101 if (d->variant->hw_rev == TYPE_G2D_3X) 102 w(0x7, CACHECTL_REG); 103 104 /* Enable interrupt */ 105 w(1, INTEN_REG); 106 /* Start G2D engine */ 107 w(1, BITBLT_START_REG); 108 } 109 110 void g2d_clear_int(struct g2d_dev *d) 111 { 112 w(1, INTC_PEND_REG); 113 } 114