Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 648 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
new file mode 100644
index 000000000..6d72355ac
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -0,0 +1,648 @@
+/*
+ * Copyright 2015 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: AMD
+ *
+ */
+
+#include <linux/irqdomain.h>
+#include <linux/pci.h>
+#include <linux/pm_domain.h>
+#include <linux/platform_device.h>
+#include <sound/designware_i2s.h>
+#include <sound/pcm.h>
+#include <linux/acpi.h>
+#include <linux/dmi.h>
+
+#include "amdgpu.h"
+#include "atom.h"
+#include "amdgpu_acp.h"
+
+#include "acp_gfx_if.h"
+
+#define ST_JADEITE 1
+#define ACP_TILE_ON_MASK			0x03
+#define ACP_TILE_OFF_MASK			0x02
+#define ACP_TILE_ON_RETAIN_REG_MASK		0x1f
+#define ACP_TILE_OFF_RETAIN_REG_MASK		0x20
+
+#define ACP_TILE_P1_MASK			0x3e
+#define ACP_TILE_P2_MASK			0x3d
+#define ACP_TILE_DSP0_MASK			0x3b
+#define ACP_TILE_DSP1_MASK			0x37
+
+#define ACP_TILE_DSP2_MASK			0x2f
+
+#define ACP_DMA_REGS_END			0x146c0
+#define ACP_I2S_PLAY_REGS_START			0x14840
+#define ACP_I2S_PLAY_REGS_END			0x148b4
+#define ACP_I2S_CAP_REGS_START			0x148b8
+#define ACP_I2S_CAP_REGS_END			0x1496c
+
+#define ACP_I2S_COMP1_CAP_REG_OFFSET		0xac
+#define ACP_I2S_COMP2_CAP_REG_OFFSET		0xa8
+#define ACP_I2S_COMP1_PLAY_REG_OFFSET		0x6c
+#define ACP_I2S_COMP2_PLAY_REG_OFFSET		0x68
+#define ACP_BT_PLAY_REGS_START			0x14970
+#define ACP_BT_PLAY_REGS_END			0x14a24
+#define ACP_BT_COMP1_REG_OFFSET			0xac
+#define ACP_BT_COMP2_REG_OFFSET			0xa8
+
+#define mmACP_PGFSM_RETAIN_REG			0x51c9
+#define mmACP_PGFSM_CONFIG_REG			0x51ca
+#define mmACP_PGFSM_READ_REG_0			0x51cc
+
+#define mmACP_MEM_SHUT_DOWN_REQ_LO		0x51f8
+#define mmACP_MEM_SHUT_DOWN_REQ_HI		0x51f9
+#define mmACP_MEM_SHUT_DOWN_STS_LO		0x51fa
+#define mmACP_MEM_SHUT_DOWN_STS_HI		0x51fb
+
+#define mmACP_CONTROL				0x5131
+#define mmACP_STATUS				0x5133
+#define mmACP_SOFT_RESET			0x5134
+#define ACP_CONTROL__ClkEn_MASK			0x1
+#define ACP_SOFT_RESET__SoftResetAud_MASK	0x100
+#define ACP_SOFT_RESET__SoftResetAudDone_MASK	0x1000000
+#define ACP_CLOCK_EN_TIME_OUT_VALUE		0x000000FF
+#define ACP_SOFT_RESET_DONE_TIME_OUT_VALUE	0x000000FF
+
+#define ACP_TIMEOUT_LOOP			0x000000FF
+#define ACP_DEVS				4
+#define ACP_SRC_ID				162
+
+static unsigned long acp_machine_id;
+
+enum {
+	ACP_TILE_P1 = 0,
+	ACP_TILE_P2,
+	ACP_TILE_DSP0,
+	ACP_TILE_DSP1,
+	ACP_TILE_DSP2,
+};
+
+static int acp_sw_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	adev->acp.parent = adev->dev;
+
+	adev->acp.cgs_device =
+		amdgpu_cgs_create_device(adev);
+	if (!adev->acp.cgs_device)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int acp_sw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	if (adev->acp.cgs_device)
+		amdgpu_cgs_destroy_device(adev->acp.cgs_device);
+
+	return 0;
+}
+
+struct acp_pm_domain {
+	void *adev;
+	struct generic_pm_domain gpd;
+};
+
+static int acp_poweroff(struct generic_pm_domain *genpd)
+{
+	struct acp_pm_domain *apd;
+	struct amdgpu_device *adev;
+
+	apd = container_of(genpd, struct acp_pm_domain, gpd);
+	adev = apd->adev;
+	/* call smu to POWER GATE ACP block
+	 * smu will
+	 * 1. turn off the acp clock
+	 * 2. power off the acp tiles
+	 * 3. check and enter ulv state
+	 */
+	amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
+	return 0;
+}
+
+static int acp_poweron(struct generic_pm_domain *genpd)
+{
+	struct acp_pm_domain *apd;
+	struct amdgpu_device *adev;
+
+	apd = container_of(genpd, struct acp_pm_domain, gpd);
+	adev = apd->adev;
+	/* call smu to UNGATE ACP block
+	 * smu will
+	 * 1. exit ulv
+	 * 2. turn on acp clock
+	 * 3. power on acp tiles
+	 */
+	amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false);
+	return 0;
+}
+
+static int acp_genpd_add_device(struct device *dev, void *data)
+{
+	struct generic_pm_domain *gpd = data;
+	int ret;
+
+	ret = pm_genpd_add_device(gpd, dev);
+	if (ret)
+		dev_err(dev, "Failed to add dev to genpd %d\n", ret);
+
+	return ret;
+}
+
+static int acp_genpd_remove_device(struct device *dev, void *data)
+{
+	int ret;
+
+	ret = pm_genpd_remove_device(dev);
+	if (ret)
+		dev_err(dev, "Failed to remove dev from genpd %d\n", ret);
+
+	/* Continue to remove */
+	return 0;
+}
+
+static int acp_quirk_cb(const struct dmi_system_id *id)
+{
+	acp_machine_id = ST_JADEITE;
+	return 1;
+}
+
+static const struct dmi_system_id acp_quirk_table[] = {
+	{
+		.callback = acp_quirk_cb,
+		.matches = {
+			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMD"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Jadeite"),
+		}
+	},
+	{
+		.callback = acp_quirk_cb,
+		.matches = {
+			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "IP3 Technology CO.,Ltd."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ASN1D"),
+		},
+	},
+	{
+		.callback = acp_quirk_cb,
+		.matches = {
+			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "Standard"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "ASN10"),
+		},
+	},
+	{}
+};
+
+/**
+ * acp_hw_init - start and test ACP block
+ *
+ * @handle: handle used to pass amdgpu_device pointer
+ *
+ */
+static int acp_hw_init(void *handle)
+{
+	int r;
+	u64 acp_base;
+	u32 val = 0;
+	u32 count = 0;
+	struct i2s_platform_data *i2s_pdata = NULL;
+
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	const struct amdgpu_ip_block *ip_block =
+		amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_ACP);
+
+	if (!ip_block)
+		return -EINVAL;
+
+	r = amd_acp_hw_init(adev->acp.cgs_device,
+			    ip_block->version->major, ip_block->version->minor);
+	/* -ENODEV means board uses AZ rather than ACP */
+	if (r == -ENODEV) {
+		amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
+		return 0;
+	} else if (r) {
+		return r;
+	}
+
+	if (adev->rmmio_size == 0 || adev->rmmio_size < 0x5289)
+		return -EINVAL;
+
+	acp_base = adev->rmmio_base;
+	adev->acp.acp_genpd = kzalloc(sizeof(struct acp_pm_domain), GFP_KERNEL);
+	if (!adev->acp.acp_genpd)
+		return -ENOMEM;
+
+	adev->acp.acp_genpd->gpd.name = "ACP_AUDIO";
+	adev->acp.acp_genpd->gpd.power_off = acp_poweroff;
+	adev->acp.acp_genpd->gpd.power_on = acp_poweron;
+	adev->acp.acp_genpd->adev = adev;
+
+	pm_genpd_init(&adev->acp.acp_genpd->gpd, NULL, false);
+	dmi_check_system(acp_quirk_table);
+	switch (acp_machine_id) {
+	case ST_JADEITE:
+	{
+		adev->acp.acp_cell = kcalloc(2, sizeof(struct mfd_cell),
+					     GFP_KERNEL);
+		if (!adev->acp.acp_cell) {
+			r = -ENOMEM;
+			goto failure;
+		}
+
+		adev->acp.acp_res = kcalloc(3, sizeof(struct resource), GFP_KERNEL);
+		if (!adev->acp.acp_res) {
+			r = -ENOMEM;
+			goto failure;
+		}
+
+		i2s_pdata = kcalloc(1, sizeof(struct i2s_platform_data), GFP_KERNEL);
+		if (!i2s_pdata) {
+			r = -ENOMEM;
+			goto failure;
+		}
+
+		i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
+				      DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
+		i2s_pdata[0].cap = DWC_I2S_PLAY | DWC_I2S_RECORD;
+		i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
+		i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
+		i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
+
+		adev->acp.acp_res[0].name = "acp2x_dma";
+		adev->acp.acp_res[0].flags = IORESOURCE_MEM;
+		adev->acp.acp_res[0].start = acp_base;
+		adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
+
+		adev->acp.acp_res[1].name = "acp2x_dw_i2s_play_cap";
+		adev->acp.acp_res[1].flags = IORESOURCE_MEM;
+		adev->acp.acp_res[1].start = acp_base + ACP_I2S_CAP_REGS_START;
+		adev->acp.acp_res[1].end = acp_base + ACP_I2S_CAP_REGS_END;
+
+		adev->acp.acp_res[2].name = "acp2x_dma_irq";
+		adev->acp.acp_res[2].flags = IORESOURCE_IRQ;
+		adev->acp.acp_res[2].start = amdgpu_irq_create_mapping(adev, 162);
+		adev->acp.acp_res[2].end = adev->acp.acp_res[2].start;
+
+		adev->acp.acp_cell[0].name = "acp_audio_dma";
+		adev->acp.acp_cell[0].num_resources = 3;
+		adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
+		adev->acp.acp_cell[0].platform_data = &adev->asic_type;
+		adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type);
+
+		adev->acp.acp_cell[1].name = "designware-i2s";
+		adev->acp.acp_cell[1].num_resources = 1;
+		adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
+		adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
+		adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
+		r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell, 2);
+		if (r)
+			goto failure;
+		r = device_for_each_child(adev->acp.parent, &adev->acp.acp_genpd->gpd,
+					  acp_genpd_add_device);
+		if (r)
+			goto failure;
+		break;
+	}
+	default:
+		adev->acp.acp_cell = kcalloc(ACP_DEVS, sizeof(struct mfd_cell),
+					     GFP_KERNEL);
+
+		if (!adev->acp.acp_cell) {
+			r = -ENOMEM;
+			goto failure;
+		}
+
+		adev->acp.acp_res = kcalloc(5, sizeof(struct resource), GFP_KERNEL);
+		if (!adev->acp.acp_res) {
+			r = -ENOMEM;
+			goto failure;
+		}
+
+		i2s_pdata = kcalloc(3, sizeof(struct i2s_platform_data), GFP_KERNEL);
+		if (!i2s_pdata) {
+			r = -ENOMEM;
+			goto failure;
+		}
+
+		switch (adev->asic_type) {
+		case CHIP_STONEY:
+			i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
+				DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
+			break;
+		default:
+			i2s_pdata[0].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
+		}
+		i2s_pdata[0].cap = DWC_I2S_PLAY;
+		i2s_pdata[0].snd_rates = SNDRV_PCM_RATE_8000_96000;
+		i2s_pdata[0].i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET;
+		i2s_pdata[0].i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET;
+		switch (adev->asic_type) {
+		case CHIP_STONEY:
+			i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
+				DW_I2S_QUIRK_COMP_PARAM1 |
+				DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
+			break;
+		default:
+			i2s_pdata[1].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET |
+				DW_I2S_QUIRK_COMP_PARAM1;
+		}
+
+		i2s_pdata[1].cap = DWC_I2S_RECORD;
+		i2s_pdata[1].snd_rates = SNDRV_PCM_RATE_8000_96000;
+		i2s_pdata[1].i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET;
+		i2s_pdata[1].i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET;
+
+		i2s_pdata[2].quirks = DW_I2S_QUIRK_COMP_REG_OFFSET;
+		switch (adev->asic_type) {
+		case CHIP_STONEY:
+			i2s_pdata[2].quirks |= DW_I2S_QUIRK_16BIT_IDX_OVERRIDE;
+			break;
+		default:
+			break;
+		}
+
+		i2s_pdata[2].cap = DWC_I2S_PLAY | DWC_I2S_RECORD;
+		i2s_pdata[2].snd_rates = SNDRV_PCM_RATE_8000_96000;
+		i2s_pdata[2].i2s_reg_comp1 = ACP_BT_COMP1_REG_OFFSET;
+		i2s_pdata[2].i2s_reg_comp2 = ACP_BT_COMP2_REG_OFFSET;
+
+		adev->acp.acp_res[0].name = "acp2x_dma";
+		adev->acp.acp_res[0].flags = IORESOURCE_MEM;
+		adev->acp.acp_res[0].start = acp_base;
+		adev->acp.acp_res[0].end = acp_base + ACP_DMA_REGS_END;
+
+		adev->acp.acp_res[1].name = "acp2x_dw_i2s_play";
+		adev->acp.acp_res[1].flags = IORESOURCE_MEM;
+		adev->acp.acp_res[1].start = acp_base + ACP_I2S_PLAY_REGS_START;
+		adev->acp.acp_res[1].end = acp_base + ACP_I2S_PLAY_REGS_END;
+
+		adev->acp.acp_res[2].name = "acp2x_dw_i2s_cap";
+		adev->acp.acp_res[2].flags = IORESOURCE_MEM;
+		adev->acp.acp_res[2].start = acp_base + ACP_I2S_CAP_REGS_START;
+		adev->acp.acp_res[2].end = acp_base + ACP_I2S_CAP_REGS_END;
+
+		adev->acp.acp_res[3].name = "acp2x_dw_bt_i2s_play_cap";
+		adev->acp.acp_res[3].flags = IORESOURCE_MEM;
+		adev->acp.acp_res[3].start = acp_base + ACP_BT_PLAY_REGS_START;
+		adev->acp.acp_res[3].end = acp_base + ACP_BT_PLAY_REGS_END;
+
+		adev->acp.acp_res[4].name = "acp2x_dma_irq";
+		adev->acp.acp_res[4].flags = IORESOURCE_IRQ;
+		adev->acp.acp_res[4].start = amdgpu_irq_create_mapping(adev, 162);
+		adev->acp.acp_res[4].end = adev->acp.acp_res[4].start;
+
+		adev->acp.acp_cell[0].name = "acp_audio_dma";
+		adev->acp.acp_cell[0].num_resources = 5;
+		adev->acp.acp_cell[0].resources = &adev->acp.acp_res[0];
+		adev->acp.acp_cell[0].platform_data = &adev->asic_type;
+		adev->acp.acp_cell[0].pdata_size = sizeof(adev->asic_type);
+
+		adev->acp.acp_cell[1].name = "designware-i2s";
+		adev->acp.acp_cell[1].num_resources = 1;
+		adev->acp.acp_cell[1].resources = &adev->acp.acp_res[1];
+		adev->acp.acp_cell[1].platform_data = &i2s_pdata[0];
+		adev->acp.acp_cell[1].pdata_size = sizeof(struct i2s_platform_data);
+
+		adev->acp.acp_cell[2].name = "designware-i2s";
+		adev->acp.acp_cell[2].num_resources = 1;
+		adev->acp.acp_cell[2].resources = &adev->acp.acp_res[2];
+		adev->acp.acp_cell[2].platform_data = &i2s_pdata[1];
+		adev->acp.acp_cell[2].pdata_size = sizeof(struct i2s_platform_data);
+
+		adev->acp.acp_cell[3].name = "designware-i2s";
+		adev->acp.acp_cell[3].num_resources = 1;
+		adev->acp.acp_cell[3].resources = &adev->acp.acp_res[3];
+		adev->acp.acp_cell[3].platform_data = &i2s_pdata[2];
+		adev->acp.acp_cell[3].pdata_size = sizeof(struct i2s_platform_data);
+
+		r = mfd_add_hotplug_devices(adev->acp.parent, adev->acp.acp_cell, ACP_DEVS);
+		if (r)
+			goto failure;
+
+		r = device_for_each_child(adev->acp.parent, &adev->acp.acp_genpd->gpd,
+					  acp_genpd_add_device);
+		if (r)
+			goto failure;
+	}
+
+	/* Assert Soft reset of ACP */
+	val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
+
+	val |= ACP_SOFT_RESET__SoftResetAud_MASK;
+	cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
+
+	count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
+	while (true) {
+		val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
+		if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
+		    (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
+			break;
+		if (--count == 0) {
+			dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
+			r = -ETIMEDOUT;
+			goto failure;
+		}
+		udelay(100);
+	}
+	/* Enable clock to ACP and wait until the clock is enabled */
+	val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
+	val = val | ACP_CONTROL__ClkEn_MASK;
+	cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
+
+	count = ACP_CLOCK_EN_TIME_OUT_VALUE;
+
+	while (true) {
+		val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
+		if (val & (u32) 0x1)
+			break;
+		if (--count == 0) {
+			dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
+			r = -ETIMEDOUT;
+			goto failure;
+		}
+		udelay(100);
+	}
+	/* Deassert the SOFT RESET flags */
+	val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
+	val &= ~ACP_SOFT_RESET__SoftResetAud_MASK;
+	cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
+	return 0;
+
+failure:
+	kfree(i2s_pdata);
+	kfree(adev->acp.acp_res);
+	kfree(adev->acp.acp_cell);
+	kfree(adev->acp.acp_genpd);
+	return r;
+}
+
+/**
+ * acp_hw_fini - stop the hardware block
+ *
+ * @handle: handle used to pass amdgpu_device pointer
+ *
+ */
+static int acp_hw_fini(void *handle)
+{
+	u32 val = 0;
+	u32 count = 0;
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	/* return early if no ACP */
+	if (!adev->acp.acp_genpd) {
+		amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false);
+		return 0;
+	}
+
+	/* Assert Soft reset of ACP */
+	val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
+
+	val |= ACP_SOFT_RESET__SoftResetAud_MASK;
+	cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
+
+	count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE;
+	while (true) {
+		val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
+		if (ACP_SOFT_RESET__SoftResetAudDone_MASK ==
+		    (val & ACP_SOFT_RESET__SoftResetAudDone_MASK))
+			break;
+		if (--count == 0) {
+			dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
+			return -ETIMEDOUT;
+		}
+		udelay(100);
+	}
+	/* Disable ACP clock */
+	val = cgs_read_register(adev->acp.cgs_device, mmACP_CONTROL);
+	val &= ~ACP_CONTROL__ClkEn_MASK;
+	cgs_write_register(adev->acp.cgs_device, mmACP_CONTROL, val);
+
+	count = ACP_CLOCK_EN_TIME_OUT_VALUE;
+
+	while (true) {
+		val = cgs_read_register(adev->acp.cgs_device, mmACP_STATUS);
+		if (val & (u32) 0x1)
+			break;
+		if (--count == 0) {
+			dev_err(&adev->pdev->dev, "Failed to reset ACP\n");
+			return -ETIMEDOUT;
+		}
+		udelay(100);
+	}
+
+	device_for_each_child(adev->acp.parent, NULL,
+			      acp_genpd_remove_device);
+
+	mfd_remove_devices(adev->acp.parent);
+	kfree(adev->acp.acp_res);
+	kfree(adev->acp.acp_genpd);
+	kfree(adev->acp.acp_cell);
+
+	return 0;
+}
+
+static int acp_suspend(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	/* power up on suspend */
+	if (!adev->acp.acp_cell)
+		amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, false);
+	return 0;
+}
+
+static int acp_resume(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	/* power down again on resume */
+	if (!adev->acp.acp_cell)
+		amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, true);
+	return 0;
+}
+
+static int acp_early_init(void *handle)
+{
+	return 0;
+}
+
+static bool acp_is_idle(void *handle)
+{
+	return true;
+}
+
+static int acp_wait_for_idle(void *handle)
+{
+	return 0;
+}
+
+static int acp_soft_reset(void *handle)
+{
+	return 0;
+}
+
+static int acp_set_clockgating_state(void *handle,
+				     enum amd_clockgating_state state)
+{
+	return 0;
+}
+
+static int acp_set_powergating_state(void *handle,
+				     enum amd_powergating_state state)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	bool enable = (state == AMD_PG_STATE_GATE);
+
+	amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_ACP, enable);
+
+	return 0;
+}
+
+static const struct amd_ip_funcs acp_ip_funcs = {
+	.name = "acp_ip",
+	.early_init = acp_early_init,
+	.late_init = NULL,
+	.sw_init = acp_sw_init,
+	.sw_fini = acp_sw_fini,
+	.hw_init = acp_hw_init,
+	.hw_fini = acp_hw_fini,
+	.suspend = acp_suspend,
+	.resume = acp_resume,
+	.is_idle = acp_is_idle,
+	.wait_for_idle = acp_wait_for_idle,
+	.soft_reset = acp_soft_reset,
+	.set_clockgating_state = acp_set_clockgating_state,
+	.set_powergating_state = acp_set_powergating_state,
+};
+
+const struct amdgpu_ip_block_version acp_ip_block = {
+	.type = AMD_IP_BLOCK_TYPE_ACP,
+	.major = 2,
+	.minor = 2,
+	.rev = 0,
+	.funcs = &acp_ip_funcs,
+};