mtk_mdp: Add the service for mdp driver

Add MDP service, ROM size refine.

BUG=b:139269434
TEST=build kukui_scp pass & check MDP_SERVICE is available
BRANCH=none

Change-Id: Ic038d52eaf9aa8d32198ddd500b637bb3eca4f25
Signed-off-by: Christie Yu <christie.yu@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1584181
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Yilun Lin <yllin@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Commit-Queue: Nicolas Boichat <drinkcat@chromium.org>

5 files changed, 106 insertions, 2 deletions

diff --git a/board/kukui_scp/board.h b/board/kukui_scp/board.h
index c00922a41a..38149af625 100644
--- a/board/kukui_scp/board.h
+++ b/board/kukui_scp/board.h
@@ -8,7 +8,7 @@
 #ifndef __CROS_EC_BOARD_H
 #define __CROS_EC_BOARD_H
 
-#define CONFIG_FLASH_SIZE 0x40000 /* Image file size: 256KB */
+#define CONFIG_FLASH_SIZE 0x58000 /* Image file size: 256KB */
 #undef  CONFIG_LID_SWITCH
 #undef  CONFIG_FW_INCLUDE_RO
 #define CONFIG_MKBP_EVENT
@@ -32,7 +32,7 @@
  */
 #define ICACHE_BASE 0x7C000
 #define CONFIG_ROM_BASE 0x0
-#define CONFIG_RAM_BASE 0x30000
+#define CONFIG_RAM_BASE 0x58000
 #define CONFIG_ROM_SIZE (CONFIG_RAM_BASE - CONFIG_ROM_BASE)
 #define CONFIG_RAM_SIZE (CONFIG_IPC_SHARED_OBJ_ADDR - CONFIG_RAM_BASE)
 #define CONFIG_CODE_RAM_SIZE CONFIG_RAM_BASE
diff --git a/board/kukui_scp/build.mk b/board/kukui_scp/build.mk
index 17411fcb55..19355b5af5 100644
--- a/board/kukui_scp/build.mk
+++ b/board/kukui_scp/build.mk
@@ -19,3 +19,5 @@ board-$(HAS_TASK_FD_SERVICE)+=fd.o
 
 # ISP P2
 board-$(HAS_TASK_DIP_SERVICE)+=isp_p2_srv.o
+# MDP3
+board-$(HAS_TASK_MDP_SERVICE)+=mdp_ipi_message.o
diff --git a/board/kukui_scp/ec.tasklist b/board/kukui_scp/ec.tasklist
index 70a23fd8ae..e87a58195a 100644
--- a/board/kukui_scp/ec.tasklist
+++ b/board/kukui_scp/ec.tasklist
@@ -19,6 +19,7 @@
 	TASK_ALWAYS(VENC_SERVICE, venc_service_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(FD_SERVICE, fd_service_task, NULL, LARGER_TASK_STACK_SIZE) \
 	TASK_ALWAYS(DIP_SERVICE, dip_service_task, NULL, 6400) \
+	TASK_ALWAYS(MDP_SERVICE, mdp_service_task, NULL, 1800) \
 	TASK_ALWAYS(ISP_SERVICE, isp_service_task, NULL, 880)
 
 #define CONFIG_TASK_LIST \
diff --git a/board/kukui_scp/mdp_ipi_message.c b/board/kukui_scp/mdp_ipi_message.c
new file mode 100644
index 0000000000..a33048821f
--- /dev/null
+++ b/board/kukui_scp/mdp_ipi_message.c
@@ -0,0 +1,82 @@
+/* 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 "console.h"
+#include "queue_policies.h"
+#include "task.h"
+#include "util.h"
+
+#include "chip/mt_scp/ipi_chip.h"
+#include "chip/mt_scp/registers.h"
+#include "mdp_ipi_message.h"
+
+#define CPRINTF(format, args...) cprintf(CC_IPI, format, ##args)
+#define CPRINTS(format, args...) cprints(CC_IPI, format, ##args)
+
+/* Forwad declaration. */
+static struct consumer const event_mdp_consumer;
+static void event_mdp_written(struct consumer const *consumer, size_t count);
+
+static struct queue const event_mdp_queue = QUEUE_DIRECT(4,
+	struct mdp_msg_service, null_producer, event_mdp_consumer);
+static struct consumer const event_mdp_consumer = {
+	.queue = &event_mdp_queue,
+	.ops = &((struct consumer_ops const) {
+		.written = event_mdp_written,
+	}),
+};
+
+/* Stub functions only provided by private overlays. */
+#ifndef HAVE_PRIVATE_MT8183
+void mdp_common_init(void) {}
+void mdp_ipi_task_handler(void *pvParameters) {}
+#endif
+
+static void event_mdp_written(struct consumer const *consumer, size_t count)
+{
+	task_wake(TASK_ID_MDP_SERVICE);
+}
+
+static void mdp_ipi_handler(int id, void *data, unsigned int len)
+{
+	struct mdp_msg_service cmd;
+
+	cmd.id = id;
+	memcpy(cmd.msg, data, MIN(len, sizeof(cmd.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_mdp_queue, &cmd))
+		CPRINTS("Could not send mdp id: %d to the queue.", id);
+}
+DECLARE_IPI(IPI_MDP_INIT, mdp_ipi_handler, 0);
+DECLARE_IPI(IPI_MDP_FRAME, mdp_ipi_handler, 0);
+DECLARE_IPI(IPI_MDP_DEINIT, mdp_ipi_handler, 0);
+
+/* This function renames from mdp_service_entry. */
+void mdp_service_task(void *u)
+{
+	struct mdp_msg_service rsv_msg;
+	size_t size;
+
+	mdp_common_init();
+
+	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_mdp_queue, &rsv_msg);
+		ipi_enable_irq(SCP_IRQ_IPC0);
+
+		if (!size)
+			task_wait_event(-1);
+		else
+			mdp_ipi_task_handler(&rsv_msg);
+	}
+}
diff --git a/board/kukui_scp/mdp_ipi_message.h b/board/kukui_scp/mdp_ipi_message.h
new file mode 100644
index 0000000000..bcedb58504
--- /dev/null
+++ b/board/kukui_scp/mdp_ipi_message.h
@@ -0,0 +1,19 @@
+/* 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 _MDP_IPI_MESSAGE_H
+#define _MDP_IPI_MESSAGE_H
+
+struct mdp_msg_service {
+	int id;
+	unsigned char msg[20];
+};
+
+BUILD_ASSERT(member_size(struct mdp_msg_service, msg) <= CONFIG_IPC_SHARED_OBJ_BUF_SIZE);
+
+void mdp_common_init(void);
+void mdp_ipi_task_handler(void *pvParameters);
+
+#endif  // _MDP_IPI_MESSAGE_H