[mirror_ubuntu-bionic-kernel.git] / drivers / media / video / cx18 / cx18-mailbox.c

/*
 *  cx18 mailbox functions
 *
 *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 *  02111-1307  USA
 */

#include <stdarg.h>

#include "cx18-driver.h"
#include "cx18-io.h"
#include "cx18-scb.h"
#include "cx18-irq.h"
#include "cx18-mailbox.h"

#define API_FAST (1 << 2) /* Short timeout */
#define API_SLOW (1 << 3) /* Additional 300ms timeout */

#define APU 0
#define CPU 1
#define EPU 2
#define HPU 3

struct cx18_api_info {
	u32 cmd;
	u8 flags;		/* Flags, see above */
	u8 rpu;			/* Processing unit */
	const char *name; 	/* The name of the command */
};

#define API_ENTRY(rpu, x, f) { (x), (f), (rpu), #x }

static const struct cx18_api_info api_info[] = {
	/* MPEG encoder API */
	API_ENTRY(CPU, CX18_CPU_SET_CHANNEL_TYPE,		0),
	API_ENTRY(CPU, CX18_EPU_DEBUG, 				0),
	API_ENTRY(CPU, CX18_CREATE_TASK, 			0),
	API_ENTRY(CPU, CX18_DESTROY_TASK, 			0),
	API_ENTRY(CPU, CX18_CPU_CAPTURE_START,                  API_SLOW),
	API_ENTRY(CPU, CX18_CPU_CAPTURE_STOP,                   API_SLOW),
	API_ENTRY(CPU, CX18_CPU_CAPTURE_PAUSE,                  0),
	API_ENTRY(CPU, CX18_CPU_CAPTURE_RESUME,                 0),
	API_ENTRY(CPU, CX18_CPU_SET_CHANNEL_TYPE,               0),
	API_ENTRY(CPU, CX18_CPU_SET_STREAM_OUTPUT_TYPE,         0),
	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_IN,                   0),
	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_RATE,                 0),
	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_RESOLUTION,           0),
	API_ENTRY(CPU, CX18_CPU_SET_FILTER_PARAM,               0),
	API_ENTRY(CPU, CX18_CPU_SET_SPATIAL_FILTER_TYPE,        0),
	API_ENTRY(CPU, CX18_CPU_SET_MEDIAN_CORING,              0),
	API_ENTRY(CPU, CX18_CPU_SET_INDEXTABLE,                 0),
	API_ENTRY(CPU, CX18_CPU_SET_AUDIO_PARAMETERS,           0),
	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_MUTE,                 0),
	API_ENTRY(CPU, CX18_CPU_SET_AUDIO_MUTE,                 0),
	API_ENTRY(CPU, CX18_CPU_SET_MISC_PARAMETERS,            0),
	API_ENTRY(CPU, CX18_CPU_SET_RAW_VBI_PARAM,              API_SLOW),
	API_ENTRY(CPU, CX18_CPU_SET_CAPTURE_LINE_NO,            0),
	API_ENTRY(CPU, CX18_CPU_SET_COPYRIGHT,                  0),
	API_ENTRY(CPU, CX18_CPU_SET_AUDIO_PID,                  0),
	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_PID,                  0),
	API_ENTRY(CPU, CX18_CPU_SET_VER_CROP_LINE,              0),
	API_ENTRY(CPU, CX18_CPU_SET_GOP_STRUCTURE,              0),
	API_ENTRY(CPU, CX18_CPU_SET_SCENE_CHANGE_DETECTION,     0),
	API_ENTRY(CPU, CX18_CPU_SET_ASPECT_RATIO,               0),
	API_ENTRY(CPU, CX18_CPU_SET_SKIP_INPUT_FRAME,           0),
	API_ENTRY(CPU, CX18_CPU_SET_SLICED_VBI_PARAM,           0),
	API_ENTRY(CPU, CX18_CPU_SET_USERDATA_PLACE_HOLDER,      0),
	API_ENTRY(CPU, CX18_CPU_GET_ENC_PTS,                    0),
	API_ENTRY(CPU, CX18_CPU_DE_SET_MDL_ACK,			0),
	API_ENTRY(CPU, CX18_CPU_DE_SET_MDL,			API_FAST),
	API_ENTRY(CPU, CX18_APU_RESETAI,			API_FAST),
	API_ENTRY(CPU, CX18_CPU_DE_RELEASE_MDL,			API_SLOW),
	API_ENTRY(0, 0,						0),
};

static const struct cx18_api_info *find_api_info(u32 cmd)
{
	int i;

	for (i = 0; api_info[i].cmd; i++)
		if (api_info[i].cmd == cmd)
			return &api_info[i];
	return NULL;
}

static struct cx18_mailbox __iomem *cx18_mb_is_complete(struct cx18 *cx, int rpu,
		u32 *state, u32 *irq, u32 *req)
{
	struct cx18_mailbox __iomem *mb = NULL;
	int wait_count = 0;
	u32 ack;

	switch (rpu) {
	case APU:
		mb = &cx->scb->epu2apu_mb;
		*state = cx18_readl(cx, &cx->scb->apu_state);
		*irq = cx18_readl(cx, &cx->scb->epu2apu_irq);
		break;

	case CPU:
		mb = &cx->scb->epu2cpu_mb;
		*state = cx18_readl(cx, &cx->scb->cpu_state);
		*irq = cx18_readl(cx, &cx->scb->epu2cpu_irq);
		break;

	case HPU:
		mb = &cx->scb->epu2hpu_mb;
		*state = cx18_readl(cx, &cx->scb->hpu_state);
		*irq = cx18_readl(cx, &cx->scb->epu2hpu_irq);
		break;
	}

	if (mb == NULL)
		return mb;

	do {
		*req = cx18_readl(cx, &mb->request);
		ack = cx18_readl(cx, &mb->ack);
		wait_count++;
	} while (*req != ack && wait_count < 600);

	if (*req == ack) {
		(*req)++;
		if (*req == 0 || *req == 0xffffffff)
			*req = 1;
		return mb;
	}
	return NULL;
}

long cx18_mb_ack(struct cx18 *cx, const struct cx18_mailbox *mb)
{
	const struct cx18_api_info *info = find_api_info(mb->cmd);
	struct cx18_mailbox __iomem *ack_mb;
	u32 ack_irq;
	u8 rpu = CPU;

	if (info == NULL && mb->cmd) {
		CX18_WARN("Cannot ack unknown command %x\n", mb->cmd);
		return -EINVAL;
	}
	if (info)
		rpu = info->rpu;

	switch (rpu) {
	case HPU:
		ack_irq = IRQ_EPU_TO_HPU_ACK;
		ack_mb = &cx->scb->hpu2epu_mb;
		break;
	case APU:
		ack_irq = IRQ_EPU_TO_APU_ACK;
		ack_mb = &cx->scb->apu2epu_mb;
		break;
	case CPU:
		ack_irq = IRQ_EPU_TO_CPU_ACK;
		ack_mb = &cx->scb->cpu2epu_mb;
		break;
	default:
		CX18_WARN("Unknown RPU for command %x\n", mb->cmd);
		return -EINVAL;
	}

	cx18_setup_page(cx, SCB_OFFSET);
	cx18_write_sync(cx, mb->request, &ack_mb->ack);
	cx18_write_reg_expect(cx, ack_irq, SW2_INT_SET, ack_irq, ack_irq);
	return 0;
}


static int cx18_api_call(struct cx18 *cx, u32 cmd, int args, u32 data[])
{
	const struct cx18_api_info *info = find_api_info(cmd);
	u32 state = 0, irq = 0, req, oldreq, err;
	struct cx18_mailbox __iomem *mb;
	wait_queue_head_t *waitq;
	int timeout = 100;
	int cnt = 0;
	int sig = 0;
	int i;

	if (info == NULL) {
		CX18_WARN("unknown cmd %x\n", cmd);
		return -EINVAL;
	}

	if (cmd == CX18_CPU_DE_SET_MDL)
		CX18_DEBUG_HI_API("%s\n", info->name);
	else
		CX18_DEBUG_API("%s\n", info->name);
	cx18_setup_page(cx, SCB_OFFSET);
	mb = cx18_mb_is_complete(cx, info->rpu, &state, &irq, &req);

	if (mb == NULL) {
		CX18_ERR("mb %s busy\n", info->name);
		return -EBUSY;
	}

	oldreq = req - 1;
	cx18_writel(cx, cmd, &mb->cmd);
	for (i = 0; i < args; i++)
		cx18_writel(cx, data[i], &mb->args[i]);
	cx18_writel(cx, 0, &mb->error);
	cx18_writel(cx, req, &mb->request);

	switch (info->rpu) {
	case APU: waitq = &cx->mb_apu_waitq; break;
	case CPU: waitq = &cx->mb_cpu_waitq; break;
	case EPU: waitq = &cx->mb_epu_waitq; break;
	case HPU: waitq = &cx->mb_hpu_waitq; break;
	default: return -EINVAL;
	}
	if (info->flags & API_FAST)
		timeout /= 2;
	cx18_write_reg_expect(cx, irq, SW1_INT_SET, irq, irq);

	while (!sig && cx18_readl(cx, &mb->ack) != cx18_readl(cx, &mb->request)
	       && cnt < 660) {
		if (cnt > 200 && !in_atomic())
			sig = cx18_msleep_timeout(10, 1);
		cnt++;
	}
	if (sig)
		return -EINTR;
	if (cnt == 660) {
		cx18_writel(cx, oldreq, &mb->request);
		CX18_ERR("mb %s failed\n", info->name);
		return -EINVAL;
	}
	for (i = 0; i < MAX_MB_ARGUMENTS; i++)
		data[i] = cx18_readl(cx, &mb->args[i]);
	err = cx18_readl(cx, &mb->error);
	if (!in_atomic() && (info->flags & API_SLOW))
		cx18_msleep_timeout(300, 0);
	if (err)
		CX18_DEBUG_API("mailbox error %08x for command %s\n", err,
				info->name);
	return err ? -EIO : 0;
}

int cx18_api(struct cx18 *cx, u32 cmd, int args, u32 data[])
{
	int res = cx18_api_call(cx, cmd, args, data);

	/* Allow a single retry, probably already too late though.
	   If there is no free mailbox then that is usually an indication
	   of a more serious problem. */
	return (res == -EBUSY) ? cx18_api_call(cx, cmd, args, data) : res;
}

static int cx18_set_filter_param(struct cx18_stream *s)
{
	struct cx18 *cx = s->cx;
	u32 mode;
	int ret;

	mode = (cx->filter_mode & 1) ? 2 : (cx->spatial_strength ? 1 : 0);
	ret = cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
			s->handle, 1, mode, cx->spatial_strength);
	mode = (cx->filter_mode & 2) ? 2 : (cx->temporal_strength ? 1 : 0);
	ret = ret ? ret : cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
			s->handle, 0, mode, cx->temporal_strength);
	ret = ret ? ret : cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
			s->handle, 2, cx->filter_mode >> 2, 0);
	return ret;
}

int cx18_api_func(void *priv, u32 cmd, int in, int out,
		u32 data[CX2341X_MBOX_MAX_DATA])
{
	struct cx18 *cx = priv;
	struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];

	switch (cmd) {
	case CX2341X_ENC_SET_OUTPUT_PORT:
		return 0;
	case CX2341X_ENC_SET_FRAME_RATE:
		return cx18_vapi(cx, CX18_CPU_SET_VIDEO_IN, 6,
				s->handle, 0, 0, 0, 0, data[0]);
	case CX2341X_ENC_SET_FRAME_SIZE:
		return cx18_vapi(cx, CX18_CPU_SET_VIDEO_RESOLUTION, 3,
				s->handle, data[1], data[0]);
	case CX2341X_ENC_SET_STREAM_TYPE:
		return cx18_vapi(cx, CX18_CPU_SET_STREAM_OUTPUT_TYPE, 2,
				s->handle, data[0]);
	case CX2341X_ENC_SET_ASPECT_RATIO:
		return cx18_vapi(cx, CX18_CPU_SET_ASPECT_RATIO, 2,
				s->handle, data[0]);

	case CX2341X_ENC_SET_GOP_PROPERTIES:
		return cx18_vapi(cx, CX18_CPU_SET_GOP_STRUCTURE, 3,
				s->handle, data[0], data[1]);
	case CX2341X_ENC_SET_GOP_CLOSURE:
		return 0;
	case CX2341X_ENC_SET_AUDIO_PROPERTIES:
		return cx18_vapi(cx, CX18_CPU_SET_AUDIO_PARAMETERS, 2,
				s->handle, data[0]);
	case CX2341X_ENC_MUTE_AUDIO:
		return cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2,
				s->handle, data[0]);
	case CX2341X_ENC_SET_BIT_RATE:
		return cx18_vapi(cx, CX18_CPU_SET_VIDEO_RATE, 5,
				s->handle, data[0], data[1], data[2], data[3]);
	case CX2341X_ENC_MUTE_VIDEO:
		return cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2,
				s->handle, data[0]);
	case CX2341X_ENC_SET_FRAME_DROP_RATE:
		return cx18_vapi(cx, CX18_CPU_SET_SKIP_INPUT_FRAME, 2,
				s->handle, data[0]);
	case CX2341X_ENC_MISC:
		return cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 4,
				s->handle, data[0], data[1], data[2]);
	case CX2341X_ENC_SET_DNR_FILTER_MODE:
		cx->filter_mode = (data[0] & 3) | (data[1] << 2);
		return cx18_set_filter_param(s);
	case CX2341X_ENC_SET_DNR_FILTER_PROPS:
		cx->spatial_strength = data[0];
		cx->temporal_strength = data[1];
		return cx18_set_filter_param(s);
	case CX2341X_ENC_SET_SPATIAL_FILTER_TYPE:
		return cx18_vapi(cx, CX18_CPU_SET_SPATIAL_FILTER_TYPE, 3,
				s->handle, data[0], data[1]);
	case CX2341X_ENC_SET_CORING_LEVELS:
		return cx18_vapi(cx, CX18_CPU_SET_MEDIAN_CORING, 5,
				s->handle, data[0], data[1], data[2], data[3]);
	}
	CX18_WARN("Unknown cmd %x\n", cmd);
	return 0;
}

int cx18_vapi_result(struct cx18 *cx, u32 data[MAX_MB_ARGUMENTS],
		u32 cmd, int args, ...)
{
	va_list ap;
	int i;

	va_start(ap, args);
	for (i = 0; i < args; i++)
		data[i] = va_arg(ap, u32);
	va_end(ap);
	return cx18_api(cx, cmd, args, data);
}

int cx18_vapi(struct cx18 *cx, u32 cmd, int args, ...)
{
	u32 data[MAX_MB_ARGUMENTS];
	va_list ap;
	int i;

	if (cx == NULL) {
		CX18_ERR("cx == NULL (cmd=%x)\n", cmd);
		return 0;
	}
	if (args > MAX_MB_ARGUMENTS) {
		CX18_ERR("args too big (cmd=%x)\n", cmd);
		args = MAX_MB_ARGUMENTS;
	}
	va_start(ap, args);
	for (i = 0; i < args; i++)
		data[i] = va_arg(ap, u32);
	va_end(ap);
	return cx18_api(cx, cmd, args, data);
}
Commit	Line	Data
1c1e45d1 HV	1	/*
	2	* cx18 mailbox functions
	3	*
	4	* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	19	* 02111-1307 USA
	20	*/
	21
	22	#include <stdarg.h>
	23
	24	#include "cx18-driver.h"
b1526421	25	#include "cx18-io.h"
1c1e45d1 HV	26	#include "cx18-scb.h"
	27	#include "cx18-irq.h"
	28	#include "cx18-mailbox.h"
	29
	30	#define API_FAST (1 << 2) /* Short timeout */
	31	#define API_SLOW (1 << 3) /* Additional 300ms timeout */
	32
	33	#define APU 0
	34	#define CPU 1
	35	#define EPU 2
	36	#define HPU 3
	37
	38	struct cx18_api_info {
	39	u32 cmd;
	40	u8 flags; /* Flags, see above */
	41	u8 rpu; /* Processing unit */
	42	const char name; / The name of the command */
	43	};
	44
	45	#define API_ENTRY(rpu, x, f) { (x), (f), (rpu), #x }
	46
	47	static const struct cx18_api_info api_info[] = {
	48	/* MPEG encoder API */
	49	API_ENTRY(CPU, CX18_CPU_SET_CHANNEL_TYPE, 0),
	50	API_ENTRY(CPU, CX18_EPU_DEBUG, 0),
	51	API_ENTRY(CPU, CX18_CREATE_TASK, 0),
	52	API_ENTRY(CPU, CX18_DESTROY_TASK, 0),
	53	API_ENTRY(CPU, CX18_CPU_CAPTURE_START, API_SLOW),
	54	API_ENTRY(CPU, CX18_CPU_CAPTURE_STOP, API_SLOW),
	55	API_ENTRY(CPU, CX18_CPU_CAPTURE_PAUSE, 0),
	56	API_ENTRY(CPU, CX18_CPU_CAPTURE_RESUME, 0),
	57	API_ENTRY(CPU, CX18_CPU_SET_CHANNEL_TYPE, 0),
	58	API_ENTRY(CPU, CX18_CPU_SET_STREAM_OUTPUT_TYPE, 0),
	59	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_IN, 0),
	60	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_RATE, 0),
	61	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_RESOLUTION, 0),
	62	API_ENTRY(CPU, CX18_CPU_SET_FILTER_PARAM, 0),
	63	API_ENTRY(CPU, CX18_CPU_SET_SPATIAL_FILTER_TYPE, 0),
	64	API_ENTRY(CPU, CX18_CPU_SET_MEDIAN_CORING, 0),
	65	API_ENTRY(CPU, CX18_CPU_SET_INDEXTABLE, 0),
	66	API_ENTRY(CPU, CX18_CPU_SET_AUDIO_PARAMETERS, 0),
	67	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_MUTE, 0),
	68	API_ENTRY(CPU, CX18_CPU_SET_AUDIO_MUTE, 0),
	69	API_ENTRY(CPU, CX18_CPU_SET_MISC_PARAMETERS, 0),
	70	API_ENTRY(CPU, CX18_CPU_SET_RAW_VBI_PARAM, API_SLOW),
	71	API_ENTRY(CPU, CX18_CPU_SET_CAPTURE_LINE_NO, 0),
	72	API_ENTRY(CPU, CX18_CPU_SET_COPYRIGHT, 0),
	73	API_ENTRY(CPU, CX18_CPU_SET_AUDIO_PID, 0),
	74	API_ENTRY(CPU, CX18_CPU_SET_VIDEO_PID, 0),
	75	API_ENTRY(CPU, CX18_CPU_SET_VER_CROP_LINE, 0),
	76	API_ENTRY(CPU, CX18_CPU_SET_GOP_STRUCTURE, 0),
	77	API_ENTRY(CPU, CX18_CPU_SET_SCENE_CHANGE_DETECTION, 0),
	78	API_ENTRY(CPU, CX18_CPU_SET_ASPECT_RATIO, 0),
	79	API_ENTRY(CPU, CX18_CPU_SET_SKIP_INPUT_FRAME, 0),
	80	API_ENTRY(CPU, CX18_CPU_SET_SLICED_VBI_PARAM, 0),
	81	API_ENTRY(CPU, CX18_CPU_SET_USERDATA_PLACE_HOLDER, 0),
	82	API_ENTRY(CPU, CX18_CPU_GET_ENC_PTS, 0),
	83	API_ENTRY(CPU, CX18_CPU_DE_SET_MDL_ACK, 0),
	84	API_ENTRY(CPU, CX18_CPU_DE_SET_MDL, API_FAST),
81cb727d	85	API_ENTRY(CPU, CX18_APU_RESETAI, API_FAST),
4e6b6104	86	API_ENTRY(CPU, CX18_CPU_DE_RELEASE_MDL, API_SLOW),
1c1e45d1 HV	87	API_ENTRY(0, 0, 0),
	88	};
	89
	90	static const struct cx18_api_info *find_api_info(u32 cmd)
	91	{
	92	int i;
	93
	94	for (i = 0; api_info[i].cmd; i++)
	95	if (api_info[i].cmd == cmd)
	96	return &api_info[i];
	97	return NULL;
	98	}
	99
990c81c8	100	static struct cx18_mailbox __iomem cx18_mb_is_complete(struct cx18 cx, int rpu,
1c1e45d1 HV	101	u32 state, u32 irq, u32 *req)
1c1e45d1 HV	102	{
990c81c8	103	struct cx18_mailbox __iomem *mb = NULL;
1c1e45d1 HV	104	int wait_count = 0;
	105	u32 ack;
	106
	107	switch (rpu) {
	108	case APU:
	109	mb = &cx->scb->epu2apu_mb;
b1526421 AW	110	*state = cx18_readl(cx, &cx->scb->apu_state);
b1526421 AW	111	*irq = cx18_readl(cx, &cx->scb->epu2apu_irq);
1c1e45d1 HV	112	break;
	113
	114	case CPU:
	115	mb = &cx->scb->epu2cpu_mb;
b1526421 AW	116	*state = cx18_readl(cx, &cx->scb->cpu_state);
b1526421 AW	117	*irq = cx18_readl(cx, &cx->scb->epu2cpu_irq);
1c1e45d1 HV	118	break;
	119
	120	case HPU:
	121	mb = &cx->scb->epu2hpu_mb;
b1526421 AW	122	*state = cx18_readl(cx, &cx->scb->hpu_state);
b1526421 AW	123	*irq = cx18_readl(cx, &cx->scb->epu2hpu_irq);
1c1e45d1 HV	124	break;
	125	}
	126
	127	if (mb == NULL)
	128	return mb;
	129
	130	do {
b1526421 AW	131	*req = cx18_readl(cx, &mb->request);
b1526421 AW	132	ack = cx18_readl(cx, &mb->ack);
1c1e45d1 HV	133	wait_count++;
	134	} while (*req != ack && wait_count < 600);
	135
	136	if (*req == ack) {
	137	(*req)++;
	138	if (req == 0 \|\| req == 0xffffffff)
	139	*req = 1;
	140	return mb;
	141	}
	142	return NULL;
	143	}
	144
	145	long cx18_mb_ack(struct cx18 cx, const struct cx18_mailbox mb)
	146	{
	147	const struct cx18_api_info *info = find_api_info(mb->cmd);
990c81c8	148	struct cx18_mailbox __iomem *ack_mb;
1c1e45d1 HV	149	u32 ack_irq;
	150	u8 rpu = CPU;
	151
	152	if (info == NULL && mb->cmd) {
	153	CX18_WARN("Cannot ack unknown command %x\n", mb->cmd);
	154	return -EINVAL;
	155	}
	156	if (info)
	157	rpu = info->rpu;
	158
	159	switch (rpu) {
	160	case HPU:
	161	ack_irq = IRQ_EPU_TO_HPU_ACK;
	162	ack_mb = &cx->scb->hpu2epu_mb;
	163	break;
	164	case APU:
	165	ack_irq = IRQ_EPU_TO_APU_ACK;
	166	ack_mb = &cx->scb->apu2epu_mb;
	167	break;
	168	case CPU:
	169	ack_irq = IRQ_EPU_TO_CPU_ACK;
	170	ack_mb = &cx->scb->cpu2epu_mb;
	171	break;
	172	default:
	173	CX18_WARN("Unknown RPU for command %x\n", mb->cmd);
	174	return -EINVAL;
	175	}
	176
b1526421 AW	177	cx18_setup_page(cx, SCB_OFFSET);
b1526421 AW	178	cx18_write_sync(cx, mb->request, &ack_mb->ack);
f056d29e	179	cx18_write_reg_expect(cx, ack_irq, SW2_INT_SET, ack_irq, ack_irq);
1c1e45d1 HV	180	return 0;
	181	}
	182
	183
	184	static int cx18_api_call(struct cx18 *cx, u32 cmd, int args, u32 data[])
	185	{
	186	const struct cx18_api_info *info = find_api_info(cmd);
	187	u32 state = 0, irq = 0, req, oldreq, err;
990c81c8	188	struct cx18_mailbox __iomem *mb;
1c1e45d1 HV	189	wait_queue_head_t *waitq;
	190	int timeout = 100;
	191	int cnt = 0;
	192	int sig = 0;
	193	int i;
	194
	195	if (info == NULL) {
	196	CX18_WARN("unknown cmd %x\n", cmd);
	197	return -EINVAL;
	198	}
	199
	200	if (cmd == CX18_CPU_DE_SET_MDL)
	201	CX18_DEBUG_HI_API("%s\n", info->name);
	202	else
	203	CX18_DEBUG_API("%s\n", info->name);
b1526421	204	cx18_setup_page(cx, SCB_OFFSET);
1c1e45d1 HV	205	mb = cx18_mb_is_complete(cx, info->rpu, &state, &irq, &req);
	206
	207	if (mb == NULL) {
	208	CX18_ERR("mb %s busy\n", info->name);
	209	return -EBUSY;
	210	}
	211
	212	oldreq = req - 1;
b1526421	213	cx18_writel(cx, cmd, &mb->cmd);
1c1e45d1	214	for (i = 0; i < args; i++)
b1526421 AW	215	cx18_writel(cx, data[i], &mb->args[i]);
	216	cx18_writel(cx, 0, &mb->error);
	217	cx18_writel(cx, req, &mb->request);
1c1e45d1 HV	218
	219	switch (info->rpu) {
	220	case APU: waitq = &cx->mb_apu_waitq; break;
	221	case CPU: waitq = &cx->mb_cpu_waitq; break;
	222	case EPU: waitq = &cx->mb_epu_waitq; break;
	223	case HPU: waitq = &cx->mb_hpu_waitq; break;
	224	default: return -EINVAL;
	225	}
	226	if (info->flags & API_FAST)
	227	timeout /= 2;
f056d29e	228	cx18_write_reg_expect(cx, irq, SW1_INT_SET, irq, irq);
1c1e45d1	229
b1526421 AW	230	while (!sig && cx18_readl(cx, &mb->ack) != cx18_readl(cx, &mb->request)
b1526421 AW	231	&& cnt < 660) {
1c1e45d1 HV	232	if (cnt > 200 && !in_atomic())
	233	sig = cx18_msleep_timeout(10, 1);
	234	cnt++;
	235	}
	236	if (sig)
	237	return -EINTR;
	238	if (cnt == 660) {
b1526421	239	cx18_writel(cx, oldreq, &mb->request);
1c1e45d1 HV	240	CX18_ERR("mb %s failed\n", info->name);
	241	return -EINVAL;
	242	}
	243	for (i = 0; i < MAX_MB_ARGUMENTS; i++)
b1526421 AW	244	data[i] = cx18_readl(cx, &mb->args[i]);
b1526421 AW	245	err = cx18_readl(cx, &mb->error);
1c1e45d1 HV	246	if (!in_atomic() && (info->flags & API_SLOW))
	247	cx18_msleep_timeout(300, 0);
	248	if (err)
	249	CX18_DEBUG_API("mailbox error %08x for command %s\n", err,
	250	info->name);
	251	return err ? -EIO : 0;
	252	}
	253
	254	int cx18_api(struct cx18 *cx, u32 cmd, int args, u32 data[])
	255	{
	256	int res = cx18_api_call(cx, cmd, args, data);
	257
	258	/* Allow a single retry, probably already too late though.
	259	If there is no free mailbox then that is usually an indication
	260	of a more serious problem. */
	261	return (res == -EBUSY) ? cx18_api_call(cx, cmd, args, data) : res;
	262	}
	263
	264	static int cx18_set_filter_param(struct cx18_stream *s)
	265	{
	266	struct cx18 *cx = s->cx;
	267	u32 mode;
	268	int ret;
	269
	270	mode = (cx->filter_mode & 1) ? 2 : (cx->spatial_strength ? 1 : 0);
	271	ret = cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
	272	s->handle, 1, mode, cx->spatial_strength);
	273	mode = (cx->filter_mode & 2) ? 2 : (cx->temporal_strength ? 1 : 0);
	274	ret = ret ? ret : cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
	275	s->handle, 0, mode, cx->temporal_strength);
	276	ret = ret ? ret : cx18_vapi(cx, CX18_CPU_SET_FILTER_PARAM, 4,
	277	s->handle, 2, cx->filter_mode >> 2, 0);
	278	return ret;
	279	}
	280
	281	int cx18_api_func(void *priv, u32 cmd, int in, int out,
	282	u32 data[CX2341X_MBOX_MAX_DATA])
	283	{
	284	struct cx18 *cx = priv;
	285	struct cx18_stream *s = &cx->streams[CX18_ENC_STREAM_TYPE_MPG];
	286
	287	switch (cmd) {
	288	case CX2341X_ENC_SET_OUTPUT_PORT:
	289	return 0;
	290	case CX2341X_ENC_SET_FRAME_RATE:
	291	return cx18_vapi(cx, CX18_CPU_SET_VIDEO_IN, 6,
	292	s->handle, 0, 0, 0, 0, data[0]);
	293	case CX2341X_ENC_SET_FRAME_SIZE:
	294	return cx18_vapi(cx, CX18_CPU_SET_VIDEO_RESOLUTION, 3,
	295	s->handle, data[1], data[0]);
	296	case CX2341X_ENC_SET_STREAM_TYPE:
	297	return cx18_vapi(cx, CX18_CPU_SET_STREAM_OUTPUT_TYPE, 2,
	298	s->handle, data[0]);
	299	case CX2341X_ENC_SET_ASPECT_RATIO:
	300	return cx18_vapi(cx, CX18_CPU_SET_ASPECT_RATIO, 2,
	301	s->handle, data[0]);
	302
	303	case CX2341X_ENC_SET_GOP_PROPERTIES:
	304	return cx18_vapi(cx, CX18_CPU_SET_GOP_STRUCTURE, 3,
	305	s->handle, data[0], data[1]);
	306	case CX2341X_ENC_SET_GOP_CLOSURE:
	307	return 0;
	308	case CX2341X_ENC_SET_AUDIO_PROPERTIES:
	309	return cx18_vapi(cx, CX18_CPU_SET_AUDIO_PARAMETERS, 2,
310	s->handle, data[0]);
311	case CX2341X_ENC_MUTE_AUDIO:
312	return cx18_vapi(cx, CX18_CPU_SET_AUDIO_MUTE, 2,
313	s->handle, data[0]);
314	case CX2341X_ENC_SET_BIT_RATE:
315	return cx18_vapi(cx, CX18_CPU_SET_VIDEO_RATE, 5,
316	s->handle, data[0], data[1], data[2], data[3]);
317	case CX2341X_ENC_MUTE_VIDEO:
318	return cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2,
319	s->handle, data[0]);
320	case CX2341X_ENC_SET_FRAME_DROP_RATE:
321	return cx18_vapi(cx, CX18_CPU_SET_SKIP_INPUT_FRAME, 2,
322	s->handle, data[0]);
323	case CX2341X_ENC_MISC:
324	return cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 4,
325	s->handle, data[0], data[1], data[2]);
326	case CX2341X_ENC_SET_DNR_FILTER_MODE:
327	cx->filter_mode = (data[0] & 3) \| (data[1] << 2);
328	return cx18_set_filter_param(s);
329	case CX2341X_ENC_SET_DNR_FILTER_PROPS:
330	cx->spatial_strength = data[0];
331	cx->temporal_strength = data[1];
332	return cx18_set_filter_param(s);
333	case CX2341X_ENC_SET_SPATIAL_FILTER_TYPE:
334	return cx18_vapi(cx, CX18_CPU_SET_SPATIAL_FILTER_TYPE, 3,
335	s->handle, data[0], data[1]);
336	case CX2341X_ENC_SET_CORING_LEVELS:
337	return cx18_vapi(cx, CX18_CPU_SET_MEDIAN_CORING, 5,
338	s->handle, data[0], data[1], data[2], data[3]);
339	}
340	CX18_WARN("Unknown cmd %x\n", cmd);
341	return 0;
342	}
343
344	int cx18_vapi_result(struct cx18 *cx, u32 data[MAX_MB_ARGUMENTS],
345	u32 cmd, int args, ...)
346	{
347	va_list ap;
348	int i;
349
350	va_start(ap, args);
351	for (i = 0; i < args; i++)
352	data[i] = va_arg(ap, u32);
353	va_end(ap);
354	return cx18_api(cx, cmd, args, data);
355	}
356
357	int cx18_vapi(struct cx18 *cx, u32 cmd, int args, ...)
358	{
359	u32 data[MAX_MB_ARGUMENTS];
360	va_list ap;
361	int i;
362
363	if (cx == NULL) {
364	CX18_ERR("cx == NULL (cmd=%x)\n", cmd);
365	return 0;
366	}
367	if (args > MAX_MB_ARGUMENTS) {
368	CX18_ERR("args too big (cmd=%x)\n", cmd);
369	args = MAX_MB_ARGUMENTS;
370	}
371	va_start(ap, args);
372	for (i = 0; i < args; i++)
373	data[i] = va_arg(ap, u32);
374	va_end(ap);
375	return cx18_api(cx, cmd, args, data);
376	}