[PATCH v2 4/8] ASoC: SOF: mediatek: Add fw loader and mt8195 dsp ops to load firmware

[Daniel Baluta <daniel.baluta@oss.nxp.com>]

From: YC Hung <yc.hung@mediatek.com>

Add mt8195-loader module with ops callback to load and run firmware
on mt8195 platform.

Signed-off-by: YC Hung <yc.hung@mediatek.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
 sound/soc/sof/mediatek/mt8195/Makefile        |  2 +-
 sound/soc/sof/mediatek/mt8195/mt8195-loader.c | 56 +++++++++++++++++++
 sound/soc/sof/mediatek/mt8195/mt8195.c        | 19 +++++++
 sound/soc/sof/mediatek/mt8195/mt8195.h        |  3 +
 4 files changed, 79 insertions(+), 1 deletion(-)
 create mode 100644 sound/soc/sof/mediatek/mt8195/mt8195-loader.c

diff --git a/sound/soc/sof/mediatek/mt8195/Makefile b/sound/soc/sof/mediatek/mt8195/Makefile
index dd2b6e4affc9..66cdc0e7bf3c 100644
--- a/sound/soc/sof/mediatek/mt8195/Makefile
+++ b/sound/soc/sof/mediatek/mt8195/Makefile
@@ -1,3 +1,3 @@
 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
-snd-sof-mt8195-objs := mt8195.o
+snd-sof-mt8195-objs := mt8195.o mt8195-loader.o
 obj-$(CONFIG_SND_SOC_SOF_MT8195) += snd-sof-mt8195.o
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195-loader.c b/sound/soc/sof/mediatek/mt8195/mt8195-loader.c
new file mode 100644
index 000000000000..ed18d6379e92
--- /dev/null
+++ b/sound/soc/sof/mediatek/mt8195/mt8195-loader.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// Copyright (c) 2021 Mediatek Corporation. All rights reserved.
+//
+// Author: YC Hung <yc.hung@mediatek.com>
+//
+// Hardware interface for mt8195 DSP code loader
+
+#include <sound/sof.h>
+#include "mt8195.h"
+#include "../../ops.h"
+
+void sof_hifixdsp_boot_sequence(struct snd_sof_dev *sdev, u32 boot_addr)
+{
+	/* ADSP bootup base */
+	snd_sof_dsp_write(sdev, DSP_REG_BAR, DSP_ALTRESETVEC, boot_addr);
+
+	/* pull high RunStall (set bit3 to 1) */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				ADSP_RUNSTALL, ADSP_RUNSTALL);
+
+	/* pull high StatVectorSel to use AltResetVec (set bit4 to 1) */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				DSP_RESET_SW, DSP_RESET_SW);
+
+	/* toggle  DReset & BReset */
+	/* pull high DReset & BReset */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				ADSP_BRESET_SW | ADSP_DRESET_SW,
+				ADSP_BRESET_SW | ADSP_DRESET_SW);
+
+	/* pull low DReset & BReset */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				ADSP_BRESET_SW | ADSP_DRESET_SW,
+				0);
+
+	/* Enable PDebug */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_PDEBUGBUS0,
+				PDEBUG_ENABLE,
+				PDEBUG_ENABLE);
+
+	/* release RunStall (set bit3 to 0) */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				ADSP_RUNSTALL, 0);
+}
+
+void sof_hifixdsp_shutdown(struct snd_sof_dev *sdev)
+{
+	/* Clear to 0 firstly */
+	snd_sof_dsp_write(sdev, DSP_REG_BAR, DSP_RESET_SW, 0x0);
+
+	/* RUN_STALL pull high again to reset */
+	snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW,
+				ADSP_RUNSTALL, ADSP_RUNSTALL);
+}
+
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195.c b/sound/soc/sof/mediatek/mt8195/mt8195.c
index 966b8660e21c..88da6c2de070 100644
--- a/sound/soc/sof/mediatek/mt8195/mt8195.c
+++ b/sound/soc/sof/mediatek/mt8195/mt8195.c
@@ -198,6 +198,17 @@ static int adsp_shared_base_ioremap(struct platform_device *pdev, void *data)
 	return 0;
 }
 
+static int mt8195_run(struct snd_sof_dev *sdev)
+{
+	u32 adsp_bootup_addr;
+
+	adsp_bootup_addr = SRAM_PHYS_BASE_FROM_DSP_VIEW;
+	dev_dbg(sdev->dev, "HIFIxDSP boot from base : 0x%08X\n", adsp_bootup_addr);
+	sof_hifixdsp_boot_sequence(sdev, adsp_bootup_addr);
+
+	return 0;
+}
+
 static int mt8195_dsp_probe(struct snd_sof_dev *sdev)
 {
 	struct platform_device *pdev = container_of(sdev->dev, struct platform_device, dev);
@@ -294,6 +305,9 @@ const struct snd_sof_dsp_ops sof_mt8195_ops = {
 	.probe		= mt8195_dsp_probe,
 	.remove		= mt8195_dsp_remove,
 
+	/* DSP core boot */
+	.run		= mt8195_run,
+
 	/* Block IO */
 	.block_read	= sof_block_read,
 	.block_write	= sof_block_write,
@@ -307,6 +321,11 @@ const struct snd_sof_dsp_ops sof_mt8195_ops = {
 	/* misc */
 	.get_bar_index	= mt8195_get_bar_index,
 
+	/* module loading */
+	.load_module	= snd_sof_parse_module_memcpy,
+	/* firmware loading */
+	.load_firmware	= snd_sof_load_firmware_memcpy,
+
 	/* Firmware ops */
 	.dsp_arch_ops = &sof_xtensa_arch_ops,
 
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195.h b/sound/soc/sof/mediatek/mt8195/mt8195.h
index 48cbbb5aacb5..929424182357 100644
--- a/sound/soc/sof/mediatek/mt8195/mt8195.h
+++ b/sound/soc/sof/mediatek/mt8195/mt8195.h
@@ -10,6 +10,7 @@
 #define __MT8195_H
 
 struct mtk_adsp_chip_info;
+struct snd_sof_dev;
 
 #define DSP_REG_BASE			0x10803000
 #define SCP_CFGREG_BASE			0x10724000
@@ -152,4 +153,6 @@ struct mtk_adsp_chip_info;
 #define DRAM_REMAP_SHIFT	12
 #define DRAM_REMAP_MASK		(BIT(DRAM_REMAP_SHIFT) - 1)
 
+void sof_hifixdsp_boot_sequence(struct snd_sof_dev *sdev, u32 boot_addr);
+void sof_hifixdsp_shutdown(struct snd_sof_dev *sdev);
 #endif
-- 
2.27.0