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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Samsung S5P G2D - 2D Graphics Accelerator Driver4 *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 */18void g2d_reset(struct g2d_dev *d)19{20 w(1, SOFT_RESET_REG);21}22 23void 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 43void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a)44{45 w(a, SRC_BASE_ADDR_REG);46}47 48void 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 68void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a)69{70 w(a, DST_BASE_ADDR_REG);71}72 73void g2d_set_rop4(struct g2d_dev *d, u32 r)74{75 w(r, ROP4_REG);76}77 78void g2d_set_flip(struct g2d_dev *d, u32 r)79{80 w(r, SRC_MSK_DIRECT_REG);81}82 83void 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 93void g2d_set_cmd(struct g2d_dev *d, u32 c)94{95 w(c, BITBLT_COMMAND_REG);96}97 98void 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 110void g2d_clear_int(struct g2d_dev *d)111{112 w(1, INTC_PEND_REG);113}114