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path: root/drivers/media/video/cx18/cx18-mailbox.c
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Diffstat (limited to 'drivers/media/video/cx18/cx18-mailbox.c')
-rw-r--r--drivers/media/video/cx18/cx18-mailbox.c372
1 files changed, 372 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-mailbox.c b/drivers/media/video/cx18/cx18-mailbox.c
new file mode 100644
index 000000000000..0c5f328bca54
--- /dev/null
+++ b/drivers/media/video/cx18/cx18-mailbox.c
@@ -0,0 +1,372 @@
+/*
+ * 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-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(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 *cx18_mb_is_complete(struct cx18 *cx, int rpu,
+ u32 *state, u32 *irq, u32 *req)
+{
+ struct cx18_mailbox *mb = NULL;
+ int wait_count = 0;
+ u32 ack;
+
+ switch (rpu) {
+ case APU:
+ mb = &cx->scb->epu2apu_mb;
+ *state = readl(&cx->scb->apu_state);
+ *irq = readl(&cx->scb->epu2apu_irq);
+ break;
+
+ case CPU:
+ mb = &cx->scb->epu2cpu_mb;
+ *state = readl(&cx->scb->cpu_state);
+ *irq = readl(&cx->scb->epu2cpu_irq);
+ break;
+
+ case HPU:
+ mb = &cx->scb->epu2hpu_mb;
+ *state = readl(&cx->scb->hpu_state);
+ *irq = readl(&cx->scb->epu2hpu_irq);
+ break;
+ }
+
+ if (mb == NULL)
+ return mb;
+
+ do {
+ *req = readl(&mb->request);
+ ack = readl(&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 *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;
+ }
+
+ setup_page(SCB_OFFSET);
+ write_sync(mb->request, &ack_mb->ack);
+ write_reg(ack_irq, SW2_INT_SET);
+ 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 *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);
+ setup_page(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;
+ writel(cmd, &mb->cmd);
+ for (i = 0; i < args; i++)
+ writel(data[i], &mb->args[i]);
+ writel(0, &mb->error);
+ writel(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;
+ write_reg(irq, SW1_INT_SET);
+
+ while (!sig && readl(&mb->ack) != readl(&mb->request) && cnt < 660) {
+ if (cnt > 200 && !in_atomic())
+ sig = cx18_msleep_timeout(10, 1);
+ cnt++;
+ }
+ if (sig)
+ return -EINTR;
+ if (cnt == 660) {
+ writel(oldreq, &mb->request);
+ CX18_ERR("mb %s failed\n", info->name);
+ return -EINVAL;
+ }
+ for (i = 0; i < MAX_MB_ARGUMENTS; i++)
+ data[i] = readl(&mb->args[i]);
+ err = readl(&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);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 22:31:13 +0000