mtk_isp: Add the service for isp P1 driver

BRANCH=none
BUG=b:139269434
TEST=build kukui_scp pass & camera test pass

Change-Id: I0d3927b0ee6cc9fa738a063939bcf3d03170493e
Signed-off-by: Jungo Lin <Jungo.Lin@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1549814
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>

4 files changed, 108 insertions, 1 deletions

diff --git a/board/kukui_scp/build.mk b/board/kukui_scp/build.mk
index 238a657487..37e63282e2 100644
--- a/board/kukui_scp/build.mk
+++ b/board/kukui_scp/build.mk
@@ -11,3 +11,6 @@ CHIP_VARIANT:=mt8183
 board-y=board.o
 board-$(HAS_TASK_VDEC_SERVICE)+=vdec.o
 board-$(HAS_TASK_VENC_SERVICE)+=venc.o
+
+# ISP P1
+board-$(HAS_TASK_ISP_SERVICE)+=isp_p1_srv.o
diff --git a/board/kukui_scp/ec.tasklist b/board/kukui_scp/ec.tasklist
index 6a00ce34c9..c500396468 100644
--- a/board/kukui_scp/ec.tasklist
+++ b/board/kukui_scp/ec.tasklist
@@ -20,5 +20,5 @@
 	TASK_ALWAYS(HOSTCMD, host_command_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(VDEC_SERVICE, vdec_service_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(VENC_SERVICE, venc_service_task, NULL, LARGER_TASK_STACK_SIZE) \
+	TASK_ALWAYS(ISP_SERVICE, isp_service_task, NULL, 880) \
 	TASK_ALWAYS(CONSOLE, console_task, NULL, LARGER_TASK_STACK_SIZE)
-
diff --git a/board/kukui_scp/isp_p1_srv.c b/board/kukui_scp/isp_p1_srv.c
new file mode 100644
index 0000000000..92048f98c1
--- /dev/null
+++ b/board/kukui_scp/isp_p1_srv.c
@@ -0,0 +1,83 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "chip/mt_scp/ipi_chip.h"
+#include "chip/mt_scp/registers.h"
+#include "console.h"
+#include "dma.h"
+#include "hooks.h"
+#include "isp_p1_srv.h"
+#include "task.h"
+#include "queue.h"
+#include "queue_policies.h"
+#include "util.h"
+
+#define CPRINTS(format, args...) cprints(CC_IPI, format, ##args)
+
+/* Forwad declaration. */
+static struct consumer const event_isp_consumer;
+static void event_isp_written(struct consumer const *consumer, size_t count);
+
+static struct queue const event_isp_queue = QUEUE_DIRECT(8,
+	struct isp_msg, null_producer, event_isp_consumer);
+
+static struct consumer const event_isp_consumer = {
+	.queue = &event_isp_queue,
+	.ops = &((struct consumer_ops const) {
+		.written = event_isp_written,
+	}),
+};
+
+/* Stub functions only provided by private overlays. */
+#ifndef HAVE_PRIVATE_MT8183
+void isp_msg_handler(void *data) {}
+#endif
+
+static void event_isp_written(struct consumer const *consumer, size_t count)
+{
+	task_wake(TASK_ID_ISP_SERVICE);
+}
+
+static void isp_ipi_msg_handler(int id, void *data, uint32_t len)
+{
+	struct isp_msg rsv_msg;
+
+	if (!len)
+		return;
+
+	rsv_msg.id = id;
+	memcpy(rsv_msg.msg, data, MIN(len, sizeof(rsv_msg.msg)));
+
+	/*
+	 * If there is no other IPI handler touch this queue, we don't need to
+	 * interrupt_disable() or task_disable_irq().
+	 */
+	if (!queue_add_unit(&event_isp_queue, &rsv_msg))
+		CPRINTS("Could not send isp %d to the queue", id);
+}
+DECLARE_IPI(IPI_ISP_CMD, isp_ipi_msg_handler, 0);
+DECLARE_IPI(IPI_ISP_FRAME, isp_ipi_msg_handler, 0);
+
+/* This function renames from isp_service_entry. */
+void isp_service_task(void *u)
+{
+	struct isp_msg rsv_msg;
+	size_t size;
+
+	while (1) {
+		/*
+		 * Queue unit is added in IPI handler, which is in ISR context.
+		 * Disable IRQ to prevent a clobbered queue.
+		 */
+		ipi_disable_irq(SCP_IRQ_IPC0);
+		size = queue_remove_unit(&event_isp_queue, &rsv_msg);
+		ipi_enable_irq(SCP_IRQ_IPC0);
+
+		if (!size)
+			task_wait_event(-1);
+		else
+			isp_msg_handler(&rsv_msg);
+	}
+}
diff --git a/board/kukui_scp/isp_p1_srv.h b/board/kukui_scp/isp_p1_srv.h
new file mode 100644
index 0000000000..6e262b55e4
--- /dev/null
+++ b/board/kukui_scp/isp_p1_srv.h
@@ -0,0 +1,21 @@
+/* Copyright 2018 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef __CROS_EC_ISP_P1_SRV_H
+#define __CROS_EC_ISP_P1_SRV_H
+
+#include "chip/mt_scp/ipi_chip.h"
+
+struct isp_msg {
+	unsigned char id;
+	unsigned char msg[140];
+};
+
+BUILD_ASSERT(member_size(struct isp_msg, msg) <= CONFIG_IPC_SHARED_OBJ_BUF_SIZE);
+
+/* Functions provided by private overlay. */
+void isp_msg_handler(void *data);
+
+#endif /* __CROS_EC_ISP_P1_SRV_H */