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linux/drivers/soundwire/amd_manager.h
Vijendar Mukunda 63dc588e7a soundwire: amd: fix for wake interrupt handling for clockstop mode 
When SoundWire Wake interrupt is enabled along with SoundWire Wake
enable register, SoundWire wake interrupt will be reported
when SoundWire manager is in D3 state and ACP is in D3 state.

When SoundWire Wake interrupt is reported, it will invoke runtime
resume of the SoundWire manager device.

In case of system level suspend, for ClockStop Mode SoundWire Wake
interrupt should be disabled.
It should be enabled only for runtime suspend scenario.
Change wake interrupt enable/disable sequence for ClockStop Mode in
system level suspend and runtime suspend sceanrio.

Fixes: 9cf1efc5ed ("soundwire: amd: add pm_prepare callback and pm ops support")
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20240327063143.2266464-2-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-03-28 23:40:33 +05:30

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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/*
* Copyright (C) 2023-24 Advanced Micro Devices, Inc. All rights reserved.
*/
#ifndef __AMD_MANAGER_H
#define __AMD_MANAGER_H
#include <linux/soundwire/sdw_amd.h>
#define SDW_MANAGER_REG_OFFSET 0xc00
#define AMD_SDW_DEFAULT_ROWS 50
#define AMD_SDW_DEFAULT_COLUMNS 10
#define ACP_PAD_PULLDOWN_CTRL 0x0001448
#define ACP_SW_PAD_KEEPER_EN 0x0001454
#define ACP_SW0_WAKE_EN 0x0001458
#define ACP_EXTERNAL_INTR_CNTL0 0x0001a04
#define ACP_EXTERNAL_INTR_STAT0 0x0001a0c
#define ACP_EXTERNAL_INTR_CNTL(i) (ACP_EXTERNAL_INTR_CNTL0 + ((i) * 4))
#define ACP_EXTERNAL_INTR_STAT(i) (ACP_EXTERNAL_INTR_STAT0 + ((i) * 4))
#define ACP_SW_WAKE_EN(i) (ACP_SW0_WAKE_EN + ((i) * 8))
#define ACP_SW_EN 0x0003000
#define ACP_SW_EN_STATUS 0x0003004
#define ACP_SW_FRAMESIZE 0x0003008
#define ACP_SW_SSP_COUNTER 0x000300c
#define ACP_SW_AUDIO0_TX_EN 0x0003010
#define ACP_SW_AUDIO0_TX_EN_STATUS 0x0003014
#define ACP_SW_AUDIO0_TX_FRAME_FORMAT 0x0003018
#define ACP_SW_AUDIO0_TX_SAMPLEINTERVAL 0x000301c
#define ACP_SW_AUDIO0_TX_HCTRL_DP0 0x0003020
#define ACP_SW_AUDIO0_TX_HCTRL_DP1 0x0003024
#define ACP_SW_AUDIO0_TX_HCTRL_DP2 0x0003028
#define ACP_SW_AUDIO0_TX_HCTRL_DP3 0x000302c
#define ACP_SW_AUDIO0_TX_OFFSET_DP0 0x0003030
#define ACP_SW_AUDIO0_TX_OFFSET_DP1 0x0003034
#define ACP_SW_AUDIO0_TX_OFFSET_DP2 0x0003038
#define ACP_SW_AUDIO0_TX_OFFSET_DP3 0x000303c
#define ACP_SW_AUDIO0_TX_CHANNEL_ENABLE_DP0 0x0003040
#define ACP_SW_AUDIO0_TX_CHANNEL_ENABLE_DP1 0x0003044
#define ACP_SW_AUDIO0_TX_CHANNEL_ENABLE_DP2 0x0003048
#define ACP_SW_AUDIO0_TX_CHANNEL_ENABLE_DP3 0x000304c
#define ACP_SW_AUDIO1_TX_EN 0x0003050
#define ACP_SW_AUDIO1_TX_EN_STATUS 0x0003054
#define ACP_SW_AUDIO1_TX_FRAME_FORMAT 0x0003058
#define ACP_SW_AUDIO1_TX_SAMPLEINTERVAL 0x000305c
#define ACP_SW_AUDIO1_TX_HCTRL 0x0003060
#define ACP_SW_AUDIO1_TX_OFFSET 0x0003064
#define ACP_SW_AUDIO1_TX_CHANNEL_ENABLE_DP0 0x0003068
#define ACP_SW_AUDIO2_TX_EN 0x000306c
#define ACP_SW_AUDIO2_TX_EN_STATUS 0x0003070
#define ACP_SW_AUDIO2_TX_FRAME_FORMAT 0x0003074
#define ACP_SW_AUDIO2_TX_SAMPLEINTERVAL 0x0003078
#define ACP_SW_AUDIO2_TX_HCTRL 0x000307c
#define ACP_SW_AUDIO2_TX_OFFSET 0x0003080
#define ACP_SW_AUDIO2_TX_CHANNEL_ENABLE_DP0 0x0003084
#define ACP_SW_AUDIO0_RX_EN 0x0003088
#define ACP_SW_AUDIO0_RX_EN_STATUS 0x000308c
#define ACP_SW_AUDIO0_RX_FRAME_FORMAT 0x0003090
#define ACP_SW_AUDIO0_RX_SAMPLEINTERVAL 0x0003094
#define ACP_SW_AUDIO0_RX_HCTRL_DP0 0x0003098
#define ACP_SW_AUDIO0_RX_HCTRL_DP1 0x000309c
#define ACP_SW_AUDIO0_RX_HCTRL_DP2 0x0003100
#define ACP_SW_AUDIO0_RX_HCTRL_DP3 0x0003104
#define ACP_SW_AUDIO0_RX_OFFSET_DP0 0x0003108
#define ACP_SW_AUDIO0_RX_OFFSET_DP1 0x000310c
#define ACP_SW_AUDIO0_RX_OFFSET_DP2 0x0003110
#define ACP_SW_AUDIO0_RX_OFFSET_DP3 0x0003114
#define ACP_SW_AUDIO0_RX_CHANNEL_ENABLE_DP0 0x0003118
#define ACP_SW_AUDIO0_RX_CHANNEL_ENABLE_DP1 0x000311c
#define ACP_SW_AUDIO0_RX_CHANNEL_ENABLE_DP2 0x0003120
#define ACP_SW_AUDIO0_RX_CHANNEL_ENABLE_DP3 0x0003124
#define ACP_SW_AUDIO1_RX_EN 0x0003128
#define ACP_SW_AUDIO1_RX_EN_STATUS 0x000312c
#define ACP_SW_AUDIO1_RX_FRAME_FORMAT 0x0003130
#define ACP_SW_AUDIO1_RX_SAMPLEINTERVAL 0x0003134
#define ACP_SW_AUDIO1_RX_HCTRL 0x0003138
#define ACP_SW_AUDIO1_RX_OFFSET 0x000313c
#define ACP_SW_AUDIO1_RX_CHANNEL_ENABLE_DP0 0x0003140
#define ACP_SW_AUDIO2_RX_EN 0x0003144
#define ACP_SW_AUDIO2_RX_EN_STATUS 0x0003148
#define ACP_SW_AUDIO2_RX_FRAME_FORMAT 0x000314c
#define ACP_SW_AUDIO2_RX_SAMPLEINTERVAL 0x0003150
#define ACP_SW_AUDIO2_RX_HCTRL 0x0003154
#define ACP_SW_AUDIO2_RX_OFFSET 0x0003158
#define ACP_SW_AUDIO2_RX_CHANNEL_ENABLE_DP0 0x000315c
#define ACP_SW_BPT_PORT_EN 0x0003160
#define ACP_SW_BPT_PORT_EN_STATUS 0x0003164
#define ACP_SW_BPT_PORT_FRAME_FORMAT 0x0003168
#define ACP_SW_BPT_PORT_SAMPLEINTERVAL 0x000316c
#define ACP_SW_BPT_PORT_HCTRL 0x0003170
#define ACP_SW_BPT_PORT_OFFSET 0x0003174
#define ACP_SW_BPT_PORT_CHANNEL_ENABLE 0x0003178
#define ACP_SW_BPT_PORT_FIRST_BYTE_ADDR 0x000317c
#define ACP_SW_CLK_RESUME_CTRL 0x0003180
#define ACP_SW_CLK_RESUME_DELAY_CNTR 0x0003184
#define ACP_SW_BUS_RESET_CTRL 0x0003188
#define ACP_SW_PRBS_ERR_STATUS 0x000318c
#define ACP_SW_IMM_CMD_UPPER_WORD 0x0003230
#define ACP_SW_IMM_CMD_LOWER_QWORD 0x0003234
#define ACP_SW_IMM_RESP_UPPER_WORD 0x0003238
#define ACP_SW_IMM_RESP_LOWER_QWORD 0x000323c
#define ACP_SW_IMM_CMD_STS 0x0003240
#define ACP_SW_BRA_BASE_ADDRESS 0x0003244
#define ACP_SW_BRA_TRANSFER_SIZE 0x0003248
#define ACP_SW_BRA_DMA_BUSY 0x000324c
#define ACP_SW_BRA_RESP 0x0003250
#define ACP_SW_BRA_RESP_FRAME_ADDR 0x0003254
#define ACP_SW_BRA_CURRENT_TRANSFER_SIZE 0x0003258
#define ACP_SW_STATE_CHANGE_STATUS_0TO7 0x000325c
#define ACP_SW_STATE_CHANGE_STATUS_8TO11 0x0003260
#define ACP_SW_STATE_CHANGE_STATUS_MASK_0TO7 0x0003264
#define ACP_SW_STATE_CHANGE_STATUS_MASK_8TO11 0x0003268
#define ACP_SW_CLK_FREQUENCY_CTRL 0x000326c
#define ACP_SW_ERROR_INTR_MASK 0x0003270
#define ACP_SW_PHY_TEST_MODE_DATA_OFF 0x0003274
#define ACP_DELAY_US 10
#define AMD_SDW_TIMEOUT 1000
#define AMD_SDW_DEFAULT_CLK_FREQ 12000000
#define AMD_SDW_MCP_RESP_ACK BIT(0)
#define AMD_SDW_MCP_RESP_NACK BIT(1)
#define AMD_SDW_MCP_RESP_RDATA GENMASK(14, 7)
#define AMD_SDW_MCP_CMD_SSP_TAG BIT(31)
#define AMD_SDW_MCP_CMD_COMMAND GENMASK(14, 12)
#define AMD_SDW_MCP_CMD_DEV_ADDR GENMASK(11, 8)
#define AMD_SDW_MCP_CMD_REG_ADDR_HIGH GENMASK(7, 0)
#define AMD_SDW_MCP_CMD_REG_ADDR_LOW GENMASK(31, 24)
#define AMD_SDW_MCP_CMD_REG_DATA GENMASK(14, 7)
#define AMD_SDW_MCP_SLAVE_STAT_0_3 GENMASK(14, 7)
#define AMD_SDW_MCP_SLAVE_STAT_4_11 GENMASK_ULL(39, 24)
#define AMD_SDW_MCP_SLAVE_STATUS_MASK GENMASK(1, 0)
#define AMD_SDW_MCP_SLAVE_STATUS_BITS GENMASK(3, 2)
#define AMD_SDW_MCP_SLAVE_STATUS_8TO_11 GENMASK_ULL(15, 0)
#define AMD_SDW_MCP_SLAVE_STATUS_VALID_MASK(x) BIT(((x) * 4))
#define AMD_SDW_MCP_SLAVE_STAT_SHIFT_MASK(x) (((x) * 4) + 1)
#define AMD_SDW_MASTER_SUSPEND_DELAY_MS 2000
#define AMD_SDW_QUIRK_MASK_BUS_ENABLE BIT(0)
#define AMD_SDW_IMM_RES_VALID 1
#define AMD_SDW_IMM_CMD_BUSY 2
#define AMD_SDW_ENABLE 1
#define AMD_SDW_DISABLE 0
#define AMD_SDW_BUS_RESET_CLEAR_REQ 0
#define AMD_SDW_BUS_RESET_REQ 1
#define AMD_SDW_BUS_RESET_DONE 2
#define AMD_SDW_BUS_BASE_FREQ 24000000
#define AMD_SDW0_EXT_INTR_MASK 0x200000
#define AMD_SDW1_EXT_INTR_MASK 4
#define AMD_SDW_IRQ_MASK_0TO7 0x77777777
#define AMD_SDW_IRQ_MASK_8TO11 0x000c7777
#define AMD_SDW_IRQ_ERROR_MASK 0xff
#define AMD_SDW_MAX_FREQ_NUM 1
#define AMD_SDW0_MAX_TX_PORTS 3
#define AMD_SDW0_MAX_RX_PORTS 3
#define AMD_SDW1_MAX_TX_PORTS 1
#define AMD_SDW1_MAX_RX_PORTS 1
#define AMD_SDW0_MAX_DAI 6
#define AMD_SDW1_MAX_DAI 2
#define AMD_SDW_SLAVE_0_ATTACHED 5
#define AMD_SDW_SSP_COUNTER_VAL 3
#define AMD_DPN_FRAME_FMT_PFM GENMASK(1, 0)
#define AMD_DPN_FRAME_FMT_PDM GENMASK(3, 2)
#define AMD_DPN_FRAME_FMT_BLK_PKG_MODE BIT(4)
#define AMD_DPN_FRAME_FMT_BLK_GRP_CTRL GENMASK(6, 5)
#define AMD_DPN_FRAME_FMT_WORD_LEN GENMASK(12, 7)
#define AMD_DPN_FRAME_FMT_PCM_OR_PDM BIT(13)
#define AMD_DPN_HCTRL_HSTOP GENMASK(3, 0)
#define AMD_DPN_HCTRL_HSTART GENMASK(7, 4)
#define AMD_DPN_OFFSET_CTRL_1 GENMASK(7, 0)
#define AMD_DPN_OFFSET_CTRL_2 GENMASK(15, 8)
#define AMD_DPN_CH_EN_LCTRL GENMASK(2, 0)
#define AMD_DPN_CH_EN_CHMASK GENMASK(10, 3)
#define AMD_SDW_STAT_MAX_RETRY_COUNT 100
#define AMD_SDW0_PAD_PULLDOWN_CTRL_ENABLE_MASK 0x7f9f
#define AMD_SDW1_PAD_PULLDOWN_CTRL_ENABLE_MASK 0x7ffa
#define AMD_SDW0_PAD_PULLDOWN_CTRL_DISABLE_MASK 0x60
#define AMD_SDW1_PAD_PULLDOWN_CTRL_DISABLE_MASK 5
#define AMD_SDW0_PAD_KEEPER_EN_MASK 1
#define AMD_SDW1_PAD_KEEPER_EN_MASK 0x10
#define AMD_SDW0_PAD_KEEPER_DISABLE_MASK 0x1e
#define AMD_SDW1_PAD_KEEPER_DISABLE_MASK 0xf
#define AMD_SDW_PREQ_INTR_STAT BIT(19)
#define AMD_SDW_CLK_STOP_DONE 1
#define AMD_SDW_CLK_RESUME_REQ 2
#define AMD_SDW_CLK_RESUME_DONE 3
#define AMD_SDW_WAKE_STAT_MASK BIT(16)
#define AMD_SDW_WAKE_INTR_MASK BIT(16)
static u32 amd_sdw_freq_tbl[AMD_SDW_MAX_FREQ_NUM] = {
AMD_SDW_DEFAULT_CLK_FREQ,
};
struct sdw_manager_dp_reg {
u32 frame_fmt_reg;
u32 sample_int_reg;
u32 hctrl_dp0_reg;
u32 offset_reg;
u32 lane_ctrl_ch_en_reg;
};
/*
* SDW0 Manager instance registers 6 CPU DAI (3 TX & 3 RX Ports)
* whereas SDW1 Manager Instance registers 2 CPU DAI (one TX & one RX port)
* Below is the CPU DAI <->Manager port number mapping
* i.e SDW0 Pin0 -> port number 0 -> AUDIO0 TX
* SDW0 Pin1 -> Port number 1 -> AUDIO1 TX
* SDW0 Pin2 -> Port number 2 -> AUDIO2 TX
* SDW0 Pin3 -> port number 3 -> AUDIO0 RX
* SDW0 Pin4 -> Port number 4 -> AUDIO1 RX
* SDW0 Pin5 -> Port number 5 -> AUDIO2 RX
* Whereas for SDW1 instance
* SDW1 Pin0 -> port number 0 -> AUDIO1 TX
* SDW1 Pin1 -> Port number 1 -> AUDIO1 RX
* Same mapping should be used for programming DMA controller registers in SoundWire DMA driver.
* i.e if AUDIO0 TX channel is selected then we need to use AUDIO0 TX registers for DMA programming
* in SoundWire DMA driver.
*/
static struct sdw_manager_dp_reg sdw0_manager_dp_reg[AMD_SDW0_MAX_DAI] = {
{ACP_SW_AUDIO0_TX_FRAME_FORMAT, ACP_SW_AUDIO0_TX_SAMPLEINTERVAL, ACP_SW_AUDIO0_TX_HCTRL_DP0,
ACP_SW_AUDIO0_TX_OFFSET_DP0, ACP_SW_AUDIO0_TX_CHANNEL_ENABLE_DP0},
{ACP_SW_AUDIO1_TX_FRAME_FORMAT, ACP_SW_AUDIO1_TX_SAMPLEINTERVAL, ACP_SW_AUDIO1_TX_HCTRL,
ACP_SW_AUDIO1_TX_OFFSET, ACP_SW_AUDIO1_TX_CHANNEL_ENABLE_DP0},
{ACP_SW_AUDIO2_TX_FRAME_FORMAT, ACP_SW_AUDIO2_TX_SAMPLEINTERVAL, ACP_SW_AUDIO2_TX_HCTRL,
ACP_SW_AUDIO2_TX_OFFSET, ACP_SW_AUDIO2_TX_CHANNEL_ENABLE_DP0},
{ACP_SW_AUDIO0_RX_FRAME_FORMAT, ACP_SW_AUDIO0_RX_SAMPLEINTERVAL, ACP_SW_AUDIO0_RX_HCTRL_DP0,
ACP_SW_AUDIO0_RX_OFFSET_DP0, ACP_SW_AUDIO0_RX_CHANNEL_ENABLE_DP0},
{ACP_SW_AUDIO1_RX_FRAME_FORMAT, ACP_SW_AUDIO1_RX_SAMPLEINTERVAL, ACP_SW_AUDIO1_RX_HCTRL,
ACP_SW_AUDIO1_RX_OFFSET, ACP_SW_AUDIO1_RX_CHANNEL_ENABLE_DP0},
{ACP_SW_AUDIO2_RX_FRAME_FORMAT, ACP_SW_AUDIO2_RX_SAMPLEINTERVAL, ACP_SW_AUDIO2_RX_HCTRL,
ACP_SW_AUDIO2_RX_OFFSET, ACP_SW_AUDIO2_RX_CHANNEL_ENABLE_DP0},
};
static struct sdw_manager_dp_reg sdw1_manager_dp_reg[AMD_SDW1_MAX_DAI] = {
{ACP_SW_AUDIO1_TX_FRAME_FORMAT, ACP_SW_AUDIO1_TX_SAMPLEINTERVAL, ACP_SW_AUDIO1_TX_HCTRL,
ACP_SW_AUDIO1_TX_OFFSET, ACP_SW_AUDIO1_TX_CHANNEL_ENABLE_DP0},
{ACP_SW_AUDIO1_RX_FRAME_FORMAT, ACP_SW_AUDIO1_RX_SAMPLEINTERVAL, ACP_SW_AUDIO1_RX_HCTRL,
ACP_SW_AUDIO1_RX_OFFSET, ACP_SW_AUDIO1_RX_CHANNEL_ENABLE_DP0}
};
static u32 sdw_manager_reg_mask_array[AMD_SDW_MAX_MANAGER_COUNT] = {
AMD_SDW0_EXT_INTR_MASK,
AMD_SDW1_EXT_INTR_MASK
};
#endif
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