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
11void hantro_g2_check_idle(struct hantro_dev *vpu)
12{
13	int i;
14
15	for (i = 0; i < 3; i++) {
16		u32 status;
17
18		/* Make sure the VPU is idle */
19		status = vdpu_read(vpu, G2_REG_INTERRUPT);
20		if (status & G2_REG_INTERRUPT_DEC_E) {
21			dev_warn(vpu->dev, "device still running, aborting");
22			status |= G2_REG_INTERRUPT_DEC_ABORT_E | G2_REG_INTERRUPT_DEC_IRQ_DIS;
23			vdpu_write(vpu, status, G2_REG_INTERRUPT);
24		}
25	}
26}
27
28irqreturn_t hantro_g2_irq(int irq, void *dev_id)
29{
30	struct hantro_dev *vpu = dev_id;
31	enum vb2_buffer_state state;
32	u32 status;
33
34	status = vdpu_read(vpu, G2_REG_INTERRUPT);
35	state = (status & G2_REG_INTERRUPT_DEC_RDY_INT) ?
36		 VB2_BUF_STATE_DONE : VB2_BUF_STATE_ERROR;
37
38	vdpu_write(vpu, 0, G2_REG_INTERRUPT);
39	vdpu_write(vpu, G2_REG_CONFIG_DEC_CLK_GATE_E, G2_REG_CONFIG);
40
41	hantro_irq_done(vpu, state);
42
43	return IRQ_HANDLED;
44}
45