1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Hantro VPU codec driver
4 *
5 * Copyright (C) 2021 Collabora Ltd, Andrzej Pietrasiewicz <andrzej.p@collabora.com>
6 */
7
8#include "hantro_hw.h"
9#include "hantro_g2_regs.h"
10
11#define G2_ALIGN 16
12
13void hantro_g2_check_idle(struct hantro_dev *vpu)
14{
15 int i;
16
17 for (i = 0; i < 3; i++) {
18 u32 status;
19
20 /* Make sure the VPU is idle */
21 status = vdpu_read(vpu, G2_REG_INTERRUPT);
22 if (status & G2_REG_INTERRUPT_DEC_E) {
23 dev_warn(vpu->dev, "device still running, aborting");
24 status |= G2_REG_INTERRUPT_DEC_ABORT_E | G2_REG_INTERRUPT_DEC_IRQ_DIS;
25 vdpu_write(vpu, val: status, G2_REG_INTERRUPT);
26 }
27 }
28}
29
30irqreturn_t hantro_g2_irq(int irq, void *dev_id)
31{
32 struct hantro_dev *vpu = dev_id;
33 enum vb2_buffer_state state;
34 u32 status;
35
36 status = vdpu_read(vpu, G2_REG_INTERRUPT);
37 state = (status & G2_REG_INTERRUPT_DEC_RDY_INT) ?
38 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
39
40 vdpu_write(vpu, val: 0, G2_REG_INTERRUPT);
41 vdpu_write(vpu, G2_REG_CONFIG_DEC_CLK_GATE_E, G2_REG_CONFIG);
42
43 hantro_irq_done(vpu, result: state);
44
45 return IRQ_HANDLED;
46}
47
48size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
49{
50 return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
51}
52
53size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
54{
55 size_t cr_offset = hantro_g2_chroma_offset(ctx);
56
57 return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
58}
59

source code of linux/drivers/media/platform/verisilicon/hantro_g2.c