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Wed, 11 Jan 2023 02:59:49 -0600 Received: from vijendar-X570-GAMING-X.amd.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Wed, 11 Jan 2023 02:59:46 -0600 From: Vijendar Mukunda To: , , CC: , , , , , Vijendar Mukunda , Bard Liao , Pierre-Louis Bossart , Sanyog Kale , open list Subject: [PATCH 02/19] soundwire: amd: Add support for AMD Master driver Date: Wed, 11 Jan 2023 14:32:05 +0530 Message-ID: <20230111090222.2016499-3-Vijendar.Mukunda@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230111090222.2016499-1-Vijendar.Mukunda@amd.com> References: <20230111090222.2016499-1-Vijendar.Mukunda@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0000B073:EE_|CH3PR12MB8546:EE_ X-MS-Office365-Filtering-Correlation-Id: 58401ef8-7572-44b2-7331-08daf3b232dd X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jan 2023 08:59:50.8667 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 58401ef8-7572-44b2-7331-08daf3b232dd X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0000B073.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8546 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1754716102985276741?= X-GMAIL-MSGID: =?utf-8?q?1754716102985276741?= AMD ACP IP block has two soundwire controller devices. Add support for - Master driver probe & remove sequence - Helper functions to enable/disable interrupts, Initialize sdw controller, enable sdw pads - Master driver sdw_master_ops & port_ops callbacks Signed-off-by: Vijendar Mukunda --- drivers/soundwire/amd_master.c | 1075 +++++++++++++++++++++++++++++ drivers/soundwire/amd_master.h | 279 ++++++++ include/linux/soundwire/sdw_amd.h | 21 + 3 files changed, 1375 insertions(+) create mode 100644 drivers/soundwire/amd_master.c create mode 100644 drivers/soundwire/amd_master.h diff --git a/drivers/soundwire/amd_master.c b/drivers/soundwire/amd_master.c new file mode 100644 index 000000000000..7e1f618254ac --- /dev/null +++ b/drivers/soundwire/amd_master.c @@ -0,0 +1,1075 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * SoundWire AMD Master driver + * + * Copyright 2023 Advanced Micro Devices, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "bus.h" +#include "amd_master.h" + +#define DRV_NAME "amd_sdw_controller" + +#define to_amd_sdw(b) container_of(b, struct amd_sdwc_ctrl, bus) + +static int amd_enable_sdw_pads(struct amd_sdwc_ctrl *ctrl) +{ + u32 sw_pad_enable_mask; + u32 sw_pad_pulldown_mask; + u32 sw_pad_pulldown_val; + u32 val = 0; + + switch (ctrl->instance) { + case ACP_SDW0: + sw_pad_enable_mask = AMD_SDW0_PAD_KEEPER_EN_MASK; + sw_pad_pulldown_mask = AMD_SDW0_PAD_PULLDOWN_CTRL_ENABLE_MASK; + break; + case ACP_SDW1: + sw_pad_enable_mask = AMD_SDW1_PAD_KEEPER_EN_MASK; + sw_pad_pulldown_mask = AMD_SDW1_PAD_PULLDOWN_CTRL_ENABLE_MASK; + break; + default: + return -EINVAL; + } + + mutex_lock(ctrl->sdw_lock); + val = acp_reg_readl(ctrl->mmio + ACP_SW_PAD_KEEPER_EN); + val |= sw_pad_enable_mask; + acp_reg_writel(val, ctrl->mmio + ACP_SW_PAD_KEEPER_EN); + mutex_unlock(ctrl->sdw_lock); + usleep_range(1000, 1500); + + mutex_lock(ctrl->sdw_lock); + sw_pad_pulldown_val = acp_reg_readl(ctrl->mmio + ACP_PAD_PULLDOWN_CTRL); + sw_pad_pulldown_val &= sw_pad_pulldown_mask; + acp_reg_writel(sw_pad_pulldown_val, ctrl->mmio + ACP_PAD_PULLDOWN_CTRL); + mutex_unlock(ctrl->sdw_lock); + return 0; +} + +static int amd_init_sdw_controller(struct amd_sdwc_ctrl *ctrl) +{ + u32 acp_sw_en_reg, acp_sw_en_stat_reg, sw_bus_reset_reg; + u32 val = 0; + u32 timeout = 0; + u32 retry_count = 0; + + switch (ctrl->instance) { + case ACP_SDW0: + acp_sw_en_reg = ACP_SW_EN; + acp_sw_en_stat_reg = ACP_SW_EN_STATUS; + sw_bus_reset_reg = ACP_SW_BUS_RESET_CTRL; + break; + case ACP_SDW1: + acp_sw_en_reg = ACP_P1_SW_EN; + acp_sw_en_stat_reg = ACP_P1_SW_EN_STATUS; + sw_bus_reset_reg = ACP_P1_SW_BUS_RESET_CTRL; + break; + default: + return -EINVAL; + } + + acp_reg_writel(AMD_SDW_ENABLE, ctrl->mmio + acp_sw_en_reg); + do { + val = acp_reg_readl(ctrl->mmio + acp_sw_en_stat_reg); + if (val) + break; + usleep_range(10, 50); + } while (retry_count++ < AMD_SDW_STAT_MAX_RETRY_COUNT); + + if (retry_count > AMD_SDW_STAT_MAX_RETRY_COUNT) + return -ETIMEDOUT; + + /* Sdw Controller reset */ + acp_reg_writel(AMD_SDW_BUS_RESET_REQ, ctrl->mmio + sw_bus_reset_reg); + val = acp_reg_readl(ctrl->mmio + sw_bus_reset_reg); + while (!(val & AMD_SDW_BUS_RESET_DONE)) { + val = acp_reg_readl(ctrl->mmio + sw_bus_reset_reg); + if (timeout > AMD_DELAY_LOOP_ITERATION) + break; + usleep_range(1, 5); + timeout++; + } + timeout = 0; + acp_reg_writel(AMD_SDW_BUS_RESET_CLEAR_REQ, ctrl->mmio + sw_bus_reset_reg); + val = acp_reg_readl(ctrl->mmio + sw_bus_reset_reg); + while (val) { + val = acp_reg_readl(ctrl->mmio + sw_bus_reset_reg); + if (timeout > AMD_DELAY_LOOP_ITERATION) + break; + usleep_range(1, 5); + timeout++; + } + if (timeout == AMD_DELAY_LOOP_ITERATION) { + dev_err(ctrl->dev, "Failed to reset SW%x Soundwire Controller\n", ctrl->instance); + return -ETIMEDOUT; + } + retry_count = 0; + acp_reg_writel(AMD_SDW_DISABLE, ctrl->mmio + acp_sw_en_reg); + do { + val = acp_reg_readl(ctrl->mmio + acp_sw_en_stat_reg); + if (!val) + break; + usleep_range(10, 50); + } while (retry_count++ < AMD_SDW_STAT_MAX_RETRY_COUNT); + + if (retry_count > AMD_SDW_STAT_MAX_RETRY_COUNT) + return -ETIMEDOUT; + return 0; +} + +static int amd_enable_sdw_controller(struct amd_sdwc_ctrl *ctrl) +{ + u32 acp_sw_en_reg; + u32 acp_sw_en_stat_reg; + u32 val = 0; + u32 retry_count = 0; + + switch (ctrl->instance) { + case ACP_SDW0: + acp_sw_en_reg = ACP_SW_EN; + acp_sw_en_stat_reg = ACP_SW_EN_STATUS; + break; + case ACP_SDW1: + acp_sw_en_reg = ACP_P1_SW_EN; + acp_sw_en_stat_reg = ACP_P1_SW_EN_STATUS; + break; + default: + return -EINVAL; + } + acp_reg_writel(AMD_SDW_ENABLE, ctrl->mmio + acp_sw_en_reg); + + do { + val = acp_reg_readl(ctrl->mmio + acp_sw_en_stat_reg); + if (val) + break; + usleep_range(10, 50); + } while (retry_count++ < AMD_SDW_STAT_MAX_RETRY_COUNT); + + if (retry_count > AMD_SDW_STAT_MAX_RETRY_COUNT) + return -ETIMEDOUT; + return 0; +} + +static int amd_disable_sdw_controller(struct amd_sdwc_ctrl *ctrl) +{ + u32 clk_resume_ctrl_reg; + u32 acp_sw_en_reg; + u32 acp_sw_en_stat_reg; + u32 val = 0; + u32 retry_count = 0; + + switch (ctrl->instance) { + case ACP_SDW0: + acp_sw_en_reg = ACP_SW_EN; + acp_sw_en_stat_reg = ACP_SW_EN_STATUS; + clk_resume_ctrl_reg = ACP_SW_CLK_RESUME_CTRL; + break; + case ACP_SDW1: + acp_sw_en_reg = ACP_P1_SW_EN; + acp_sw_en_stat_reg = ACP_P1_SW_EN_STATUS; + clk_resume_ctrl_reg = ACP_P1_SW_CLK_RESUME_CTRL; + break; + default: + return -EINVAL; + } + acp_reg_writel(AMD_SDW_DISABLE, ctrl->mmio + acp_sw_en_reg); + + /* + * After invoking controller disable sequence, check whether + * controller has executed clock stop sequence. In this case, + * controller should ignore checking enable status register. + */ + val = acp_reg_readl(ctrl->mmio + clk_resume_ctrl_reg); + if (val) + return 0; + + do { + val = acp_reg_readl(ctrl->mmio + acp_sw_en_stat_reg); + if (!val) + break; + usleep_range(10, 50); + } while (retry_count++ < AMD_SDW_STAT_MAX_RETRY_COUNT); + + if (retry_count > AMD_SDW_STAT_MAX_RETRY_COUNT) + return -ETIMEDOUT; + return 0; +} + +static int amd_enable_sdw_interrupts(struct amd_sdwc_ctrl *ctrl) +{ + u32 val; + u32 acp_ext_intr_stat, acp_ext_intr_ctrl, acp_sdw_intr_mask; + u32 sw_stat_mask_0to7, sw_stat_mask_8to11, sw_err_intr_mask; + + switch (ctrl->instance) { + case ACP_SDW0: + acp_ext_intr_ctrl = ACP_EXTERNAL_INTR_CNTL; + acp_sdw_intr_mask = AMD_SDW0_EXT_INTR_MASK; + acp_ext_intr_stat = ACP_EXTERNAL_INTR_STAT; + sw_stat_mask_0to7 = SW_STATE_CHANGE_STATUS_MASK_0TO7; + sw_stat_mask_8to11 = SW_STATE_CHANGE_STATUS_MASK_8TO11; + sw_err_intr_mask = SW_ERROR_INTR_MASK; + break; + case ACP_SDW1: + acp_ext_intr_ctrl = ACP_EXTERNAL_INTR_CNTL1; + acp_sdw_intr_mask = AMD_SDW1_EXT_INTR_MASK; + acp_ext_intr_stat = ACP_EXTERNAL_INTR_STAT1; + sw_stat_mask_0to7 = P1_SW_STATE_CHANGE_STATUS_MASK_0TO7; + sw_stat_mask_8to11 = P1_SW_STATE_CHANGE_STATUS_MASK_8TO11; + sw_err_intr_mask = P1_SW_ERROR_INTR_MASK; + break; + default: + return -EINVAL; + } + mutex_lock(ctrl->sdw_lock); + val = acp_reg_readl(ctrl->mmio + acp_ext_intr_ctrl); + val |= acp_sdw_intr_mask; + acp_reg_writel(val, ctrl->mmio + acp_ext_intr_ctrl); + val = acp_reg_readl(ctrl->mmio + acp_ext_intr_ctrl); + mutex_unlock(ctrl->sdw_lock); + dev_dbg(ctrl->dev, "%s: acp_ext_intr_ctrl[0x%x]:0x%x\n", __func__, acp_ext_intr_ctrl, val); + val = acp_reg_readl(ctrl->mmio + acp_ext_intr_stat); + if (val) + acp_reg_writel(val, ctrl->mmio + acp_ext_intr_stat); + acp_reg_writel(AMD_SDW_IRQ_MASK_0TO7, ctrl->mmio + sw_stat_mask_0to7); + acp_reg_writel(AMD_SDW_IRQ_MASK_8TO11, ctrl->mmio + sw_stat_mask_8to11); + acp_reg_writel(AMD_SDW_IRQ_ERROR_MASK, ctrl->mmio + sw_err_intr_mask); + return 0; +} + +static int amd_disable_sdw_interrupts(struct amd_sdwc_ctrl *ctrl) +{ + u32 val; + u32 acp_ext_intr_cntl; + u32 acp_sdw_intr_mask; + u32 sw_stat_mask_0to7; + u32 sw_stat_mask_8to11; + u32 sw_err_intr_mask; + + switch (ctrl->instance) { + case ACP_SDW0: + acp_ext_intr_cntl = ACP_EXTERNAL_INTR_CNTL; + acp_sdw_intr_mask = AMD_SDW0_EXT_INTR_MASK; + sw_stat_mask_0to7 = SW_STATE_CHANGE_STATUS_MASK_0TO7; + sw_stat_mask_8to11 = SW_STATE_CHANGE_STATUS_MASK_8TO11; + sw_err_intr_mask = SW_ERROR_INTR_MASK; + break; + case ACP_SDW1: + acp_ext_intr_cntl = ACP_EXTERNAL_INTR_CNTL1; + acp_sdw_intr_mask = AMD_SDW1_EXT_INTR_MASK; + sw_stat_mask_0to7 = P1_SW_STATE_CHANGE_STATUS_MASK_0TO7; + sw_stat_mask_8to11 = P1_SW_STATE_CHANGE_STATUS_MASK_8TO11; + sw_err_intr_mask = P1_SW_ERROR_INTR_MASK; + break; + default: + return -EINVAL; + } + mutex_lock(ctrl->sdw_lock); + val = acp_reg_readl(ctrl->mmio + acp_ext_intr_cntl); + val &= ~acp_sdw_intr_mask; + acp_reg_writel(val, ctrl->mmio + acp_ext_intr_cntl); + mutex_unlock(ctrl->sdw_lock); + + acp_reg_writel(0x00, ctrl->mmio + sw_stat_mask_0to7); + acp_reg_writel(0x00, ctrl->mmio + sw_stat_mask_8to11); + acp_reg_writel(0x00, ctrl->mmio + sw_err_intr_mask); + return 0; +} + +static int amd_sdwc_set_frameshape(struct amd_sdwc_ctrl *ctrl, u32 rows, u32 cols) +{ + u32 sdw_rows, sdw_cols, frame_size; + u32 acp_sw_frame_reg; + + switch (ctrl->instance) { + case ACP_SDW0: + acp_sw_frame_reg = ACP_SW_FRAMESIZE; + break; + case ACP_SDW1: + acp_sw_frame_reg = ACP_P1_SW_FRAMESIZE; + break; + default: + return -EINVAL; + } + sdw_cols = sdw_find_col_index(cols); + sdw_rows = sdw_find_row_index(rows); + frame_size = (sdw_rows << 3) | sdw_cols; + acp_reg_writel(frame_size, ctrl->mmio + acp_sw_frame_reg); + return 0; +} + +static void amd_sdwc_ctl_word_prep(u32 *low_word, u32 *high_word, u32 cmd_type, + struct sdw_msg *msg, int cmd_offset) +{ + u32 low_data = 0, high_data = 0; + u16 addr; + u8 addr_high, addr_low; + u8 data = 0; + + addr = msg->addr + cmd_offset; + addr_high = (addr & 0xFF00) >> 8; + addr_low = addr & 0xFF; + + if (cmd_type == AMD_SDW_CMD_WRITE) + data = msg->buf[cmd_offset]; + + high_data = FIELD_PREP(AMD_SDW_MCP_CMD_DEV_ADDR, msg->dev_num); + high_data |= FIELD_PREP(AMD_SDW_MCP_CMD_COMMAND, cmd_type); + high_data |= FIELD_PREP(AMD_SDW_MCP_CMD_REG_ADDR_HIGH, addr_high); + low_data |= FIELD_PREP(AMD_SDW_MCP_CMD_REG_ADDR_LOW, addr_low); + low_data |= FIELD_PREP(AMD_SDW_MCP_CMD_REG_DATA, data); + + *high_word = high_data; + *low_word = low_data; +} + +static u64 amd_sdwc_send_cmd_get_resp(struct amd_sdwc_ctrl *ctrl, u32 lword, u32 uword) +{ + u64 resp = 0; + u32 imm_cmd_stat_reg, imm_cmd_uword_reg, imm_cmd_lword_reg; + u32 imm_resp_uword_reg, imm_resp_lword_reg; + u32 resp_lower, resp_high; + u32 sts = 0; + u32 timeout = 0; + + switch (ctrl->instance) { + case ACP_SDW0: + imm_cmd_stat_reg = SW_IMM_CMD_STS; + imm_cmd_uword_reg = SW_IMM_CMD_UPPER_WORD; + imm_cmd_lword_reg = SW_IMM_CMD_LOWER_QWORD; + imm_resp_uword_reg = SW_IMM_RESP_UPPER_WORD; + imm_resp_lword_reg = SW_IMM_RESP_LOWER_QWORD; + break; + case ACP_SDW1: + imm_cmd_stat_reg = P1_SW_IMM_CMD_STS; + imm_cmd_uword_reg = P1_SW_IMM_CMD_UPPER_WORD; + imm_cmd_lword_reg = P1_SW_IMM_CMD_LOWER_QWORD; + imm_resp_uword_reg = P1_SW_IMM_RESP_UPPER_WORD; + imm_resp_lword_reg = P1_SW_IMM_RESP_LOWER_QWORD; + break; + default: + return -EINVAL; + } + sts = acp_reg_readl(ctrl->mmio + imm_cmd_stat_reg); + while (sts & AMD_SDW_IMM_CMD_BUSY) { + sts = acp_reg_readl(ctrl->mmio + imm_cmd_stat_reg); + if (timeout > AMD_SDW_RETRY_COUNT) { + dev_err(ctrl->dev, "SDW%x previous cmd status clear failed\n", + ctrl->instance); + return -ETIMEDOUT; + } + timeout++; + } + + timeout = 0; + if (sts & AMD_SDW_IMM_RES_VALID) { + dev_err(ctrl->dev, "SDW%x controller is in bad state\n", ctrl->instance); + acp_reg_writel(0x00, ctrl->mmio + imm_cmd_stat_reg); + } + acp_reg_writel(uword, ctrl->mmio + imm_cmd_uword_reg); + acp_reg_writel(lword, ctrl->mmio + imm_cmd_lword_reg); + + sts = acp_reg_readl(ctrl->mmio + imm_cmd_stat_reg); + while (!(sts & AMD_SDW_IMM_RES_VALID)) { + sts = acp_reg_readl(ctrl->mmio + imm_cmd_stat_reg); + if (timeout > AMD_SDW_RETRY_COUNT) { + dev_err(ctrl->dev, "SDW%x cmd response timeout occurred\n", ctrl->instance); + return -ETIMEDOUT; + } + timeout++; + } + resp_high = acp_reg_readl(ctrl->mmio + imm_resp_uword_reg); + resp_lower = acp_reg_readl(ctrl->mmio + imm_resp_lword_reg); + timeout = 0; + acp_reg_writel(AMD_SDW_IMM_RES_VALID, ctrl->mmio + imm_cmd_stat_reg); + while ((sts & AMD_SDW_IMM_RES_VALID)) { + sts = acp_reg_readl(ctrl->mmio + imm_cmd_stat_reg); + if (timeout > AMD_SDW_RETRY_COUNT) { + dev_err(ctrl->dev, "SDW%x cmd status retry failed\n", ctrl->instance); + return -ETIMEDOUT; + } + timeout++; + } + resp = resp_high; + resp = (resp << 32) | resp_lower; + return resp; +} + +static enum sdw_command_response +amd_program_scp_addr(struct amd_sdwc_ctrl *ctrl, struct sdw_msg *msg) +{ + struct sdw_msg scp_msg = {0}; + u64 response_buf[2] = {0}; + u32 uword = 0, lword = 0; + int nack = 0, no_ack = 0; + int index, timeout = 0; + + scp_msg.dev_num = msg->dev_num; + scp_msg.addr = SDW_SCP_ADDRPAGE1; + scp_msg.buf = &msg->addr_page1; + amd_sdwc_ctl_word_prep(&lword, &uword, AMD_SDW_CMD_WRITE, &scp_msg, 0); + response_buf[0] = amd_sdwc_send_cmd_get_resp(ctrl, lword, uword); + scp_msg.addr = SDW_SCP_ADDRPAGE2; + scp_msg.buf = &msg->addr_page2; + amd_sdwc_ctl_word_prep(&lword, &uword, AMD_SDW_CMD_WRITE, &scp_msg, 0); + response_buf[1] = amd_sdwc_send_cmd_get_resp(ctrl, lword, uword); + + /* check response the writes */ + for (index = 0; index < 2; index++) { + if (response_buf[index] == -ETIMEDOUT) { + dev_err(ctrl->dev, "Program SCP cmd timeout\n"); + timeout = 1; + } else if (!(response_buf[index] & AMD_SDW_MCP_RESP_ACK)) { + no_ack = 1; + if (response_buf[index] & AMD_SDW_MCP_RESP_NACK) { + nack = 1; + dev_err(ctrl->dev, "Program SCP NACK received\n"); + } + } + } + + if (timeout) { + dev_err_ratelimited(ctrl->dev, + "SCP_addrpage command timeout for Slave %d\n", msg->dev_num); + return SDW_CMD_TIMEOUT; + } + + if (nack) { + dev_err_ratelimited(ctrl->dev, + "SCP_addrpage NACKed for Slave %d\n", msg->dev_num); + return SDW_CMD_FAIL; + } + + if (no_ack) { + dev_dbg_ratelimited(ctrl->dev, + "SCP_addrpage ignored for Slave %d\n", msg->dev_num); + return SDW_CMD_IGNORED; + } + return SDW_CMD_OK; +} + +static int amd_prep_msg(struct amd_sdwc_ctrl *ctrl, struct sdw_msg *msg, int *cmd) +{ + int ret; + + if (msg->page) { + ret = amd_program_scp_addr(ctrl, msg); + if (ret) { + msg->len = 0; + return ret; + } + } + switch (msg->flags) { + case SDW_MSG_FLAG_READ: + *cmd = AMD_SDW_CMD_READ; + break; + case SDW_MSG_FLAG_WRITE: + *cmd = AMD_SDW_CMD_WRITE; + break; + default: + dev_err(ctrl->dev, "Invalid msg cmd: %d\n", msg->flags); + return -EINVAL; + } + return 0; +} + +static unsigned int _amd_sdwc_xfer_msg(struct amd_sdwc_ctrl *ctrl, struct sdw_msg *msg, + int cmd, int cmd_offset) +{ + u64 response = 0; + u32 uword = 0, lword = 0; + int nack = 0, no_ack = 0; + int timeout = 0; + + amd_sdwc_ctl_word_prep(&lword, &uword, cmd, msg, cmd_offset); + response = amd_sdwc_send_cmd_get_resp(ctrl, lword, uword); + + if (response & AMD_SDW_MCP_RESP_ACK) { + if (cmd == AMD_SDW_CMD_READ) + msg->buf[cmd_offset] = FIELD_GET(AMD_SDW_MCP_RESP_RDATA, response); + } else { + no_ack = 1; + if (response == -ETIMEDOUT) { + timeout = 1; + } else if (response & AMD_SDW_MCP_RESP_NACK) { + nack = 1; + dev_err(ctrl->dev, "Program SCP NACK received\n"); + } + } + + if (timeout) { + dev_err_ratelimited(ctrl->dev, "command timeout for Slave %d\n", msg->dev_num); + return SDW_CMD_TIMEOUT; + } + if (nack) { + dev_err_ratelimited(ctrl->dev, + "command response NACK received for Slave %d\n", msg->dev_num); + return SDW_CMD_FAIL; + } + + if (no_ack) { + dev_err_ratelimited(ctrl->dev, "command is ignored for Slave %d\n", msg->dev_num); + return SDW_CMD_IGNORED; + } + return SDW_CMD_OK; +} + +static enum sdw_command_response amd_sdwc_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + int ret, i; + int cmd = 0; + + ret = amd_prep_msg(ctrl, msg, &cmd); + if (ret) + return SDW_CMD_FAIL_OTHER; + for (i = 0; i < msg->len; i++) { + ret = _amd_sdwc_xfer_msg(ctrl, msg, cmd, i); + if (ret) + return ret; + } + return SDW_CMD_OK; +} + +static enum sdw_command_response +amd_reset_page_addr(struct sdw_bus *bus, unsigned int dev_num) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + struct sdw_msg msg; + + /* Create dummy message with valid device number */ + memset(&msg, 0, sizeof(msg)); + msg.dev_num = dev_num; + return amd_program_scp_addr(ctrl, &msg); +} + +static u32 amd_sdwc_read_ping_status(struct sdw_bus *bus) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + u64 response; + u32 slave_stat = 0; + + response = amd_sdwc_send_cmd_get_resp(ctrl, 0, 0); + /* slave status from ping response*/ + slave_stat = FIELD_GET(AMD_SDW_MCP_SLAVE_STAT_0_3, response); + slave_stat |= FIELD_GET(AMD_SDW_MCP_SLAVE_STAT_4_11, response) << 8; + dev_dbg(ctrl->dev, "%s: slave_stat:0x%x\n", __func__, slave_stat); + return slave_stat; +} + +static void amd_sdwc_compute_slave_ports(struct sdw_master_runtime *m_rt, + struct sdw_transport_data *t_data) +{ + struct sdw_slave_runtime *s_rt = NULL; + struct sdw_port_runtime *p_rt; + int port_bo, sample_int; + unsigned int rate, bps, ch = 0; + unsigned int slave_total_ch; + struct sdw_bus_params *b_params = &m_rt->bus->params; + + port_bo = t_data->block_offset; + list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) { + rate = m_rt->stream->params.rate; + bps = m_rt->stream->params.bps; + sample_int = (m_rt->bus->params.curr_dr_freq / rate); + slave_total_ch = 0; + + list_for_each_entry(p_rt, &s_rt->port_list, port_node) { + ch = sdw_ch_mask_to_ch(p_rt->ch_mask); + + sdw_fill_xport_params(&p_rt->transport_params, + p_rt->num, false, + SDW_BLK_GRP_CNT_1, + sample_int, port_bo, port_bo >> 8, + t_data->hstart, + t_data->hstop, + SDW_BLK_PKG_PER_PORT, 0x0); + + sdw_fill_port_params(&p_rt->port_params, + p_rt->num, bps, + SDW_PORT_FLOW_MODE_ISOCH, + b_params->s_data_mode); + + port_bo += bps * ch; + slave_total_ch += ch; + } + + if (m_rt->direction == SDW_DATA_DIR_TX && + m_rt->ch_count == slave_total_ch) { + port_bo = t_data->block_offset; + } + } +} + +static int amd_sdwc_compute_params(struct sdw_bus *bus) +{ + struct sdw_transport_data t_data = {0}; + struct sdw_master_runtime *m_rt; + struct sdw_port_runtime *p_rt; + struct sdw_bus_params *b_params = &bus->params; + int port_bo, hstart, hstop, sample_int; + unsigned int rate, bps; + + port_bo = 0; + hstart = 1; + hstop = bus->params.col - 1; + t_data.hstop = hstop; + t_data.hstart = hstart; + + list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) { + rate = m_rt->stream->params.rate; + bps = m_rt->stream->params.bps; + sample_int = (bus->params.curr_dr_freq / rate); + list_for_each_entry(p_rt, &m_rt->port_list, port_node) { + port_bo = (p_rt->num * 64) + 1; + dev_dbg(bus->dev, "p_rt->num=%d hstart=%d hstop=%d port_bo=%d\n", + p_rt->num, hstart, hstop, port_bo); + sdw_fill_xport_params(&p_rt->transport_params, p_rt->num, + false, SDW_BLK_GRP_CNT_1, sample_int, + port_bo, port_bo >> 8, hstart, hstop, + SDW_BLK_PKG_PER_PORT, 0x0); + + sdw_fill_port_params(&p_rt->port_params, + p_rt->num, bps, + SDW_PORT_FLOW_MODE_ISOCH, + b_params->m_data_mode); + t_data.hstart = hstart; + t_data.hstop = hstop; + t_data.block_offset = port_bo; + t_data.sub_block_offset = 0; + } + amd_sdwc_compute_slave_ports(m_rt, &t_data); + } + return 0; +} + +static int amd_sdwc_port_params(struct sdw_bus *bus, struct sdw_port_params *p_params, + unsigned int bank) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + u32 channel_type, frame_fmt_reg, dpn_frame_fmt; + + dev_dbg(ctrl->dev, "%s: p_params->num:0x%x\n", __func__, p_params->num); + switch (ctrl->instance) { + case ACP_SDW0: + channel_type = p_params->num; + break; + case ACP_SDW1: + channel_type = p_params->num + ACP_SDW0_MAX_DAI; + break; + default: + return -EINVAL; + } + + switch (channel_type) { + case ACP_SDW0_AUDIO_TX: + frame_fmt_reg = ACP_SW_AUDIO_TX_FRAME_FORMAT; + break; + case ACP_SDW0_HS_TX: + frame_fmt_reg = ACP_SW_HEADSET_TX_FRAME_FORMAT; + break; + case ACP_SDW0_BT_TX: + frame_fmt_reg = ACP_SW_BT_TX_FRAME_FORMAT; + break; + case ACP_SDW1_BT_TX: + frame_fmt_reg = ACP_P1_SW_BT_TX_FRAME_FORMAT; + break; + case ACP_SDW0_AUDIO_RX: + frame_fmt_reg = ACP_SW_AUDIO_RX_FRAME_FORMAT; + break; + case ACP_SDW0_HS_RX: + frame_fmt_reg = ACP_SW_HEADSET_RX_FRAME_FORMAT; + break; + case ACP_SDW0_BT_RX: + frame_fmt_reg = ACP_SW_BT_RX_FRAME_FORMAT; + break; + case ACP_SDW1_BT_RX: + frame_fmt_reg = ACP_P1_SW_BT_RX_FRAME_FORMAT; + break; + default: + dev_err(bus->dev, "%s:Invalid channel:%d\n", __func__, channel_type); + return -EINVAL; + } + dpn_frame_fmt = acp_reg_readl(ctrl->mmio + frame_fmt_reg); + u32p_replace_bits(&dpn_frame_fmt, p_params->flow_mode, AMD_DPN_FRAME_FMT_PFM); + u32p_replace_bits(&dpn_frame_fmt, p_params->data_mode, AMD_DPN_FRAME_FMT_PDM); + u32p_replace_bits(&dpn_frame_fmt, p_params->bps - 1, AMD_DPN_FRAME_FMT_WORD_LEN); + acp_reg_writel(dpn_frame_fmt, ctrl->mmio + frame_fmt_reg); + return 0; +} + +static int amd_sdwc_transport_params(struct sdw_bus *bus, + struct sdw_transport_params *params, + enum sdw_reg_bank bank) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + u32 ssp_counter_reg; + u32 dpn_frame_fmt; + u32 dpn_sampleinterval; + u32 dpn_hctrl; + u32 dpn_offsetctrl; + u32 dpn_lanectrl; + u32 channel_type; + u32 frame_fmt_reg, sample_int_reg, hctrl_dp0_reg; + u32 offset_reg, lane_ctrl_reg; + + switch (ctrl->instance) { + case ACP_SDW0: + ssp_counter_reg = ACP_SW_SSP_COUNTER; + channel_type = params->port_num; + break; + case ACP_SDW1: + ssp_counter_reg = ACP_P1_SW_SSP_COUNTER; + channel_type = params->port_num + ACP_SDW0_MAX_DAI; + break; + default: + return -EINVAL; + } + acp_reg_writel(AMD_SDW_SSP_COUNTER_VAL, ctrl->mmio + ssp_counter_reg); + dev_dbg(bus->dev, "%s: p_params->num:0x%x entry channel_type:0x%x\n", + __func__, params->port_num, channel_type); + + switch (channel_type) { + case ACP_SDW0_AUDIO_TX: + { + frame_fmt_reg = ACP_SW_AUDIO_TX_FRAME_FORMAT; + sample_int_reg = ACP_SW_AUDIO_TX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_SW_AUDIO_TX_HCTRL_DP0; + offset_reg = ACP_SW_AUDIO_TX_OFFSET_DP0; + lane_ctrl_reg = ACP_SW_AUDIO_TX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW0_HS_TX: + { + frame_fmt_reg = ACP_SW_HEADSET_TX_FRAME_FORMAT; + sample_int_reg = ACP_SW_HEADSET_TX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_SW_HEADSET_TX_HCTRL; + offset_reg = ACP_SW_HEADSET_TX_OFFSET; + lane_ctrl_reg = ACP_SW_HEADSET_TX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW0_BT_TX: + { + frame_fmt_reg = ACP_SW_BT_TX_FRAME_FORMAT; + sample_int_reg = ACP_SW_BT_TX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_SW_BT_TX_HCTRL; + offset_reg = ACP_SW_BT_TX_OFFSET; + lane_ctrl_reg = ACP_SW_BT_TX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW1_BT_TX: + { + frame_fmt_reg = ACP_P1_SW_BT_TX_FRAME_FORMAT; + sample_int_reg = ACP_P1_SW_BT_TX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_P1_SW_BT_TX_HCTRL; + offset_reg = ACP_P1_SW_BT_TX_OFFSET; + lane_ctrl_reg = ACP_P1_SW_BT_TX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW0_AUDIO_RX: + { + frame_fmt_reg = ACP_SW_AUDIO_RX_FRAME_FORMAT; + sample_int_reg = ACP_SW_AUDIO_RX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_SW_AUDIO_RX_HCTRL_DP0; + offset_reg = ACP_SW_AUDIO_RX_OFFSET_DP0; + lane_ctrl_reg = ACP_SW_AUDIO_RX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW0_HS_RX: + { + frame_fmt_reg = ACP_SW_HEADSET_RX_FRAME_FORMAT; + sample_int_reg = ACP_SW_HEADSET_RX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_SW_HEADSET_RX_HCTRL; + offset_reg = ACP_SW_HEADSET_RX_OFFSET; + lane_ctrl_reg = ACP_SW_HEADSET_RX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW0_BT_RX: + { + frame_fmt_reg = ACP_SW_BT_RX_FRAME_FORMAT; + sample_int_reg = ACP_SW_BT_RX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_SW_BT_RX_HCTRL; + offset_reg = ACP_SW_BT_RX_OFFSET; + lane_ctrl_reg = ACP_SW_BT_RX_CHANNEL_ENABLE_DP0; + break; + } + case ACP_SDW1_BT_RX: + { + frame_fmt_reg = ACP_P1_SW_BT_RX_FRAME_FORMAT; + sample_int_reg = ACP_P1_SW_BT_RX_SAMPLEINTERVAL; + hctrl_dp0_reg = ACP_P1_SW_BT_RX_HCTRL; + offset_reg = ACP_P1_SW_BT_RX_OFFSET; + lane_ctrl_reg = ACP_P1_SW_BT_RX_CHANNEL_ENABLE_DP0; + break; + } + default: + dev_err(bus->dev, "%s:Invalid channel:%d\n", __func__, channel_type); + return -EINVAL; + } + dpn_frame_fmt = acp_reg_readl(ctrl->mmio + frame_fmt_reg); + u32p_replace_bits(&dpn_frame_fmt, params->blk_pkg_mode, AMD_DPN_FRAME_FMT_BLK_PKG_MODE); + u32p_replace_bits(&dpn_frame_fmt, params->blk_grp_ctrl, AMD_DPN_FRAME_FMT_BLK_GRP_CTRL); + u32p_replace_bits(&dpn_frame_fmt, SDW_STREAM_PCM, AMD_DPN_FRAME_FMT_PCM_OR_PDM); + acp_reg_writel(dpn_frame_fmt, ctrl->mmio + frame_fmt_reg); + + dpn_sampleinterval = params->sample_interval - 1; + acp_reg_writel(dpn_sampleinterval, ctrl->mmio + sample_int_reg); + + dpn_hctrl = FIELD_PREP(AMD_DPN_HCTRL_HSTOP, params->hstop); + dpn_hctrl |= FIELD_PREP(AMD_DPN_HCTRL_HSTART, params->hstart); + acp_reg_writel(dpn_hctrl, ctrl->mmio + hctrl_dp0_reg); + + dpn_offsetctrl = FIELD_PREP(AMD_DPN_OFFSET_CTRL_1, params->offset1); + dpn_offsetctrl |= FIELD_PREP(AMD_DPN_OFFSET_CTRL_2, params->offset2); + acp_reg_writel(dpn_offsetctrl, ctrl->mmio + offset_reg); + + dpn_lanectrl = acp_reg_readl(ctrl->mmio + lane_ctrl_reg); + u32p_replace_bits(&dpn_lanectrl, params->lane_ctrl, AMD_DPN_CH_EN_LCTRL); + acp_reg_writel(dpn_lanectrl, ctrl->mmio + lane_ctrl_reg); + return 0; +} + +static int amd_sdwc_port_enable(struct sdw_bus *bus, + struct sdw_enable_ch *enable_ch, + unsigned int bank) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + u32 dpn_ch_enable; + u32 ch_enable_reg, channel_type; + + switch (ctrl->instance) { + case ACP_SDW0: + channel_type = enable_ch->port_num; + break; + case ACP_SDW1: + channel_type = enable_ch->port_num + ACP_SDW0_MAX_DAI; + break; + default: + return -EINVAL; + } + + switch (channel_type) { + case ACP_SDW0_AUDIO_TX: + ch_enable_reg = ACP_SW_AUDIO_TX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW0_HS_TX: + ch_enable_reg = ACP_SW_HEADSET_TX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW0_BT_TX: + ch_enable_reg = ACP_SW_BT_TX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW1_BT_TX: + ch_enable_reg = ACP_P1_SW_BT_TX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW0_AUDIO_RX: + ch_enable_reg = ACP_SW_AUDIO_RX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW0_HS_RX: + ch_enable_reg = ACP_SW_HEADSET_RX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW0_BT_RX: + ch_enable_reg = ACP_SW_BT_RX_CHANNEL_ENABLE_DP0; + break; + case ACP_SDW1_BT_RX: + ch_enable_reg = ACP_P1_SW_BT_RX_CHANNEL_ENABLE_DP0; + break; + default: + dev_err(bus->dev, "%s:Invalid channel:%d\n", __func__, channel_type); + return -EINVAL; + } + + dpn_ch_enable = acp_reg_readl(ctrl->mmio + ch_enable_reg); + u32p_replace_bits(&dpn_ch_enable, enable_ch->ch_mask, AMD_DPN_CH_EN_CHMASK); + if (enable_ch->enable) + acp_reg_writel(dpn_ch_enable, ctrl->mmio + ch_enable_reg); + else + acp_reg_writel(0, ctrl->mmio + ch_enable_reg); + return 0; +} + +static int sdw_master_read_amd_prop(struct sdw_bus *bus) +{ + struct amd_sdwc_ctrl *ctrl = to_amd_sdw(bus); + struct fwnode_handle *link; + struct sdw_master_prop *prop; + u32 quirk_mask = 0; + u32 wake_en_mask = 0; + u32 power_mode_mask = 0; + char name[32]; + + prop = &bus->prop; + /* Find master handle */ + snprintf(name, sizeof(name), "mipi-sdw-link-%d-subproperties", bus->link_id); + link = device_get_named_child_node(bus->dev, name); + if (!link) { + dev_err(bus->dev, "Master node %s not found\n", name); + return -EIO; + } + fwnode_property_read_u32(link, "amd-sdw-enable", &quirk_mask); + if (!(quirk_mask & AMD_SDW_QUIRK_MASK_BUS_ENABLE)) + prop->hw_disabled = true; + prop->quirks = SDW_MASTER_QUIRKS_CLEAR_INITIAL_CLASH | + SDW_MASTER_QUIRKS_CLEAR_INITIAL_PARITY; + + fwnode_property_read_u32(link, "amd-sdw-wake-enable", &wake_en_mask); + ctrl->wake_en_mask = wake_en_mask; + fwnode_property_read_u32(link, "amd-sdw-power-mode", &power_mode_mask); + ctrl->power_mode_mask = power_mode_mask; + return 0; +} + +static int amd_prop_read(struct sdw_bus *bus) +{ + sdw_master_read_prop(bus); + sdw_master_read_amd_prop(bus); + return 0; +} + +static const struct sdw_master_port_ops amd_sdwc_port_ops = { + .dpn_set_port_params = amd_sdwc_port_params, + .dpn_set_port_transport_params = amd_sdwc_transport_params, + .dpn_port_enable_ch = amd_sdwc_port_enable, +}; + +static const struct sdw_master_ops amd_sdwc_ops = { + .read_prop = amd_prop_read, + .xfer_msg = amd_sdwc_xfer_msg, + .reset_page_addr = amd_reset_page_addr, + .read_ping_status = amd_sdwc_read_ping_status, +}; + +static void amd_sdwc_probe_work(struct work_struct *work) +{ + struct amd_sdwc_ctrl *ctrl = container_of(work, struct amd_sdwc_ctrl, probe_work); + struct sdw_master_prop *prop; + int ret; + + prop = &ctrl->bus.prop; + if (!prop->hw_disabled) { + ret = amd_enable_sdw_pads(ctrl); + if (ret) + return; + ret = amd_init_sdw_controller(ctrl); + if (ret) + return; + amd_enable_sdw_interrupts(ctrl); + ret = amd_enable_sdw_controller(ctrl); + if (ret) + return; + ret = amd_sdwc_set_frameshape(ctrl, 50, 10); + if (!ret) + ctrl->startup_done = true; + } +} + +static int amd_sdwc_probe(struct platform_device *pdev) +{ + const struct acp_sdw_pdata *pdata = pdev->dev.platform_data; + struct resource *res; + struct device *dev = &pdev->dev; + struct sdw_master_prop *prop; + struct sdw_bus_params *params; + struct amd_sdwc_ctrl *ctrl; + int ret; + + if (!pdev->dev.platform_data) { + dev_err(&pdev->dev, "platform_data not retrieved\n"); + return -ENODEV; + } + ctrl = devm_kzalloc(&pdev->dev, sizeof(struct amd_sdwc_ctrl), GFP_KERNEL); + if (!ctrl) + return -ENOMEM; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n"); + return -ENOMEM; + } + ctrl->mmio = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (IS_ERR(ctrl->mmio)) { + dev_err(&pdev->dev, "mmio not found\n"); + return PTR_ERR(ctrl->mmio); + } + ctrl->instance = pdata->instance; + ctrl->sdw_lock = pdata->sdw_lock; + ctrl->rows_index = sdw_find_row_index(50); + ctrl->cols_index = sdw_find_col_index(10); + + ctrl->dev = dev; + dev_set_drvdata(&pdev->dev, ctrl); + + ctrl->bus.ops = &amd_sdwc_ops; + ctrl->bus.port_ops = &amd_sdwc_port_ops; + ctrl->bus.compute_params = &amd_sdwc_compute_params; + ctrl->bus.clk_stop_timeout = 1; + switch (ctrl->instance) { + case ACP_SDW0: + ctrl->num_dout_ports = AMD_SDW0_MAX_TX_PORTS; + ctrl->num_din_ports = AMD_SDW0_MAX_RX_PORTS; + break; + case ACP_SDW1: + ctrl->num_dout_ports = AMD_SDW1_MAX_TX_PORTS; + ctrl->num_din_ports = AMD_SDW1_MAX_RX_PORTS; + break; + default: + return -EINVAL; + } + params = &ctrl->bus.params; + params->max_dr_freq = AMD_SDW_DEFAULT_CLK_FREQ * 2; + params->curr_dr_freq = AMD_SDW_DEFAULT_CLK_FREQ * 2; + params->col = 10; + params->row = 50; + + prop = &ctrl->bus.prop; + prop->clk_freq = &amd_sdwc_freq_tbl[0]; + prop->mclk_freq = AMD_SDW_BUS_BASE_FREQ; + ctrl->bus.link_id = ctrl->instance; + ret = sdw_bus_master_add(&ctrl->bus, dev, dev->fwnode); + if (ret) { + dev_err(dev, "Failed to register Soundwire controller (%d)\n", + ret); + return ret; + } + INIT_WORK(&ctrl->probe_work, amd_sdwc_probe_work); + schedule_work(&ctrl->probe_work); + return 0; +} + +static int amd_sdwc_remove(struct platform_device *pdev) +{ + struct amd_sdwc_ctrl *ctrl = dev_get_drvdata(&pdev->dev); + int ret; + + amd_disable_sdw_interrupts(ctrl); + sdw_bus_master_delete(&ctrl->bus); + ret = amd_disable_sdw_controller(ctrl); + return ret; +} + +static struct platform_driver amd_sdwc_driver = { + .probe = &amd_sdwc_probe, + .remove = &amd_sdwc_remove, + .driver = { + .name = "amd_sdw_controller", + } +}; +module_platform_driver(amd_sdwc_driver); + +MODULE_AUTHOR("Vijendar.Mukunda@amd.com"); +MODULE_DESCRIPTION("AMD soundwire driver"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME); + diff --git a/drivers/soundwire/amd_master.h b/drivers/soundwire/amd_master.h new file mode 100644 index 000000000000..42f32ca0c7a8 --- /dev/null +++ b/drivers/soundwire/amd_master.h @@ -0,0 +1,279 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) 2023 Advanced Micro Devices, Inc. All rights reserved. + */ + +#ifndef __AMD_MASTER_H +#define __AMD_MASTER_H + +#define ACP_PAD_PULLDOWN_CTRL 0x0001448 +#define ACP_SW_PAD_KEEPER_EN 0x0001454 +#define ACP_SW_WAKE_EN 0x0001458 +#define ACP_SW1_WAKE_EN 0x0001460 +#define ACP_SW_I2S_ERROR_REASON 0x00018B4 + +#define ACP_EXTERNAL_INTR_ENB 0x0001A00 +#define ACP_EXTERNAL_INTR_CNTL 0x0001A04 +#define ACP_EXTERNAL_INTR_CNTL1 0x0001A08 +#define ACP_EXTERNAL_INTR_STAT 0x0001A0C +#define ACP_EXTERNAL_INTR_STAT1 0x0001A10 +#define ACP_ERROR_STATUS 0x0001A4C +#define ACP_P1_SW_I2S_ERROR_REASON 0x0001A50 + +#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_AUDIO_TX_EN 0x0003010 +#define ACP_SW_AUDIO_TX_EN_STATUS 0x0003014 +#define ACP_SW_AUDIO_TX_FRAME_FORMAT 0x0003018 +#define ACP_SW_AUDIO_TX_SAMPLEINTERVAL 0x000301C +#define ACP_SW_AUDIO_TX_HCTRL_DP0 0x0003020 +#define ACP_SW_AUDIO_TX_HCTRL_DP1 0x0003024 +#define ACP_SW_AUDIO_TX_HCTRL_DP2 0x0003028 +#define ACP_SW_AUDIO_TX_HCTRL_DP3 0x000302C +#define ACP_SW_AUDIO_TX_OFFSET_DP0 0x0003030 +#define ACP_SW_AUDIO_TX_OFFSET_DP1 0x0003034 +#define ACP_SW_AUDIO_TX_OFFSET_DP2 0x0003038 +#define ACP_SW_AUDIO_TX_OFFSET_DP3 0x000303C +#define ACP_SW_AUDIO_TX_CHANNEL_ENABLE_DP0 0x0003040 +#define ACP_SW_AUDIO_TX_CHANNEL_ENABLE_DP1 0x0003044 +#define ACP_SW_AUDIO_TX_CHANNEL_ENABLE_DP2 0x0003048 +#define ACP_SW_AUDIO_TX_CHANNEL_ENABLE_DP3 0x000304C +#define ACP_SW_BT_TX_EN 0x0003050 +#define ACP_SW_BT_TX_EN_STATUS 0x0003054 +#define ACP_SW_BT_TX_FRAME_FORMAT 0x0003058 +#define ACP_SW_BT_TX_SAMPLEINTERVAL 0x000305C +#define ACP_SW_BT_TX_HCTRL 0x0003060 +#define ACP_SW_BT_TX_OFFSET 0x0003064 +#define ACP_SW_BT_TX_CHANNEL_ENABLE_DP0 0x0003068 +#define ACP_SW_HEADSET_TX_EN 0x000306C +#define ACP_SW_HEADSET_TX_EN_STATUS 0x0003070 +#define ACP_SW_HEADSET_TX_FRAME_FORMAT 0x0003074 +#define ACP_SW_HEADSET_TX_SAMPLEINTERVAL 0x0003078 +#define ACP_SW_HEADSET_TX_HCTRL 0x000307C +#define ACP_SW_HEADSET_TX_OFFSET 0x0003080 +#define ACP_SW_HEADSET_TX_CHANNEL_ENABLE_DP0 0x0003084 +#define ACP_SW_AUDIO_RX_EN 0x0003088 +#define ACP_SW_AUDIO_RX_EN_STATUS 0x000308C +#define ACP_SW_AUDIO_RX_FRAME_FORMAT 0x0003090 +#define ACP_SW_AUDIO_RX_SAMPLEINTERVAL 0x0003094 +#define ACP_SW_AUDIO_RX_HCTRL_DP0 0x0003098 +#define ACP_SW_AUDIO_RX_HCTRL_DP1 0x000309C +#define ACP_SW_AUDIO_RX_HCTRL_DP2 0x0003100 +#define ACP_SW_AUDIO_RX_HCTRL_DP3 0x0003104 +#define ACP_SW_AUDIO_RX_OFFSET_DP0 0x0003108 +#define ACP_SW_AUDIO_RX_OFFSET_DP1 0x000310C +#define ACP_SW_AUDIO_RX_OFFSET_DP2 0x0003110 +#define ACP_SW_AUDIO_RX_OFFSET_DP3 0x0003114 +#define ACP_SW_AUDIO_RX_CHANNEL_ENABLE_DP0 0x0003118 +#define ACP_SW_AUDIO_RX_CHANNEL_ENABLE_DP1 0x000311C +#define ACP_SW_AUDIO_RX_CHANNEL_ENABLE_DP2 0x0003120 +#define ACP_SW_AUDIO_RX_CHANNEL_ENABLE_DP3 0x0003124 +#define ACP_SW_BT_RX_EN 0x0003128 +#define ACP_SW_BT_RX_EN_STATUS 0x000312C +#define ACP_SW_BT_RX_FRAME_FORMAT 0x0003130 +#define ACP_SW_BT_RX_SAMPLEINTERVAL 0x0003134 +#define ACP_SW_BT_RX_HCTRL 0x0003138 +#define ACP_SW_BT_RX_OFFSET 0x000313C +#define ACP_SW_BT_RX_CHANNEL_ENABLE_DP0 0x0003140 +#define ACP_SW_HEADSET_RX_EN 0x0003144 +#define ACP_SW_HEADSET_RX_EN_STATUS 0x0003148 +#define ACP_SW_HEADSET_RX_FRAME_FORMAT 0x000314C +#define ACP_SW_HEADSET_RX_SAMPLEINTERVAL 0x0003150 +#define ACP_SW_HEADSET_RX_HCTRL 0x0003154 +#define ACP_SW_HEADSET_RX_OFFSET 0x0003158 +#define ACP_SW_HEADSET_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 SW_IMM_CMD_UPPER_WORD 0x0003230 +#define SW_IMM_CMD_LOWER_QWORD 0x0003234 +#define SW_IMM_RESP_UPPER_WORD 0x0003238 +#define SW_IMM_RESP_LOWER_QWORD 0x000323C +#define SW_IMM_CMD_STS 0x0003240 +#define SW_BRA_BASE_ADDRESS 0x0003244 +#define SW_BRA_TRANSFER_SIZE 0x0003248 +#define SW_BRA_DMA_BUSY 0x000324C +#define SW_BRA_RESP 0x0003250 +#define SW_BRA_RESP_FRAME_ADDR 0x0003254 +#define SW_BRA_CURRENT_TRANSFER_SIZE 0x0003258 +#define SW_STATE_CHANGE_STATUS_0TO7 0x000325C +#define SW_STATE_CHANGE_STATUS_8TO11 0x0003260 +#define SW_STATE_CHANGE_STATUS_MASK_0TO7 0x0003264 +#define SW_STATE_CHANGE_STATUS_MASK_8TO11 0x0003268 +#define SW_CLK_FREQUENCY_CTRL 0x000326C +#define SW_ERROR_INTR_MASK 0x0003270 +#define SW_PHY_TEST_MODE_DATA_OFF 0x0003274 + +#define ACP_P1_SW_EN 0x0003C00 +#define ACP_P1_SW_EN_STATUS 0x0003C04 +#define ACP_P1_SW_FRAMESIZE 0x0003C08 +#define ACP_P1_SW_SSP_COUNTER 0x0003C0C +#define ACP_P1_SW_BT_TX_EN 0x0003C50 +#define ACP_P1_SW_BT_TX_EN_STATUS 0x0003C54 +#define ACP_P1_SW_BT_TX_FRAME_FORMAT 0x0003C58 +#define ACP_P1_SW_BT_TX_SAMPLEINTERVAL 0x0003C5C +#define ACP_P1_SW_BT_TX_HCTRL 0x0003C60 +#define ACP_P1_SW_BT_TX_OFFSET 0x0003C64 +#define ACP_P1_SW_BT_TX_CHANNEL_ENABLE_DP0 0x0003C68 +#define ACP_P1_SW_BT_RX_EN 0x0003D28 +#define ACP_P1_SW_BT_RX_EN_STATUS 0x0003D2C +#define ACP_P1_SW_BT_RX_FRAME_FORMAT 0x0003D30 +#define ACP_P1_SW_BT_RX_SAMPLEINTERVAL 0x0003D34 +#define ACP_P1_SW_BT_RX_HCTRL 0x0003D38 +#define ACP_P1_SW_BT_RX_OFFSET 0x0003D3C +#define ACP_P1_SW_BT_RX_CHANNEL_ENABLE_DP0 0x0003D40 +#define ACP_P1_SW_BPT_PORT_EN 0x0003D60 +#define ACP_P1_SW_BPT_PORT_EN_STATUS 0x0003D64 +#define ACP_P1_SW_BPT_PORT_FRAME_FORMAT 0x0003D68 +#define ACP_P1_SW_BPT_PORT_SAMPLEINTERVAL 0x0003D6C +#define ACP_P1_SW_BPT_PORT_HCTRL 0x0003D70 +#define ACP_P1_SW_BPT_PORT_OFFSET 0x0003D74 +#define ACP_P1_SW_BPT_PORT_CHANNEL_ENABLE 0x0003D78 +#define ACP_P1_SW_BPT_PORT_FIRST_BYTE_ADDR 0x0003D7C +#define ACP_P1_SW_CLK_RESUME_CTRL 0x0003D80 +#define ACP_P1_SW_CLK_RESUME_DELAY_CNTR 0x0003D84 +#define ACP_P1_SW_BUS_RESET_CTRL 0x0003D88 +#define ACP_P1_SW_PRBS_ERR_STATUS 0x0003D8C + +#define P1_SW_IMM_CMD_UPPER_WORD 0x0003E30 +#define P1_SW_IMM_CMD_LOWER_QWORD 0x0003E34 +#define P1_SW_IMM_RESP_UPPER_WORD 0x0003E38 +#define P1_SW_IMM_RESP_LOWER_QWORD 0x0003E3C +#define P1_SW_IMM_CMD_STS 0x0003E40 +#define P1_SW_BRA_BASE_ADDRESS 0x0003E44 +#define P1_SW_BRA_TRANSFER_SIZE 0x0003E48 +#define P1_SW_BRA_DMA_BUSY 0x0003E4C +#define P1_SW_BRA_RESP 0x0003E50 +#define P1_SW_BRA_RESP_FRAME_ADDR 0x0003E54 +#define P1_SW_BRA_CURRENT_TRANSFER_SIZE 0x0003E58 +#define P1_SW_STATE_CHANGE_STATUS_0TO7 0x0003E5C +#define P1_SW_STATE_CHANGE_STATUS_8TO11 0x0003E60 +#define P1_SW_STATE_CHANGE_STATUS_MASK_0TO7 0x0003E64 +#define P1_SW_STATE_CHANGE_STATUS_MASK_8TO11 0x0003E68 +#define P1_SW_CLK_FREQUENCY_CTRL 0x0003E6C +#define P1_SW_ERROR_INTR_MASK 0x0003E70 +#define P1_SW_PHY_TEST_MODE_DATA_OFF 0x0003E74 + +#define ACP_PHY_BASE_ADDRESS 0x1240000 +#define AMD_DELAY_LOOP_ITERATION 1000 +#define AMD_SDW_DEFAULT_CLK_FREQ 12000000 +#define AMD_SDW_RETRY_COUNT 1000 + +#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(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(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 3000 +#define AMD_SDW_CLK_STOP_MAX_RETRY_COUNT 100 +#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 0x000D7777 +#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_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 + +enum amd_sdw_channel { + /* SDW0 */ + ACP_SDW0_AUDIO_TX = 0, + ACP_SDW0_BT_TX, + ACP_SDW0_HS_TX, + ACP_SDW0_AUDIO_RX, + ACP_SDW0_BT_RX, + ACP_SDW0_HS_RX, + /* SDW1 */ + ACP_SDW1_BT_TX, + ACP_SDW1_BT_RX, +}; + +enum amd_sdw_cmd_type { + AMD_SDW_CMD_PING = 0, + AMD_SDW_CMD_READ = 2, + AMD_SDW_CMD_WRITE = 3, +}; + +static u32 amd_sdwc_freq_tbl[AMD_SDW_MAX_FREQ_NUM] = { + AMD_SDW_DEFAULT_CLK_FREQ, +}; + +struct sdw_transport_data { + int hstart; + int hstop; + int block_offset; + int sub_block_offset; +}; + +static inline u32 acp_reg_readl(void __iomem *base_addr) +{ + return readl(base_addr); +} + +static inline void acp_reg_writel(u32 val, void __iomem *base_addr) +{ + writel(val, base_addr); +} +#endif diff --git a/include/linux/soundwire/sdw_amd.h b/include/linux/soundwire/sdw_amd.h index f0123815af46..5ec39f8c2f2e 100644 --- a/include/linux/soundwire/sdw_amd.h +++ b/include/linux/soundwire/sdw_amd.h @@ -10,9 +10,30 @@ #define AMD_SDW_CLK_STOP_MODE 1 #define AMD_SDW_POWER_OFF_MODE 2 +#define ACP_SDW0 0 +#define ACP_SDW1 1 +#define ACP_SDW0_MAX_DAI 6 struct acp_sdw_pdata { u16 instance; struct mutex *sdw_lock; }; + +struct amd_sdwc_ctrl { + struct sdw_bus bus; + struct device *dev; + void __iomem *mmio; + struct work_struct probe_work; + struct mutex *sdw_lock; + int num_din_ports; + int num_dout_ports; + int cols_index; + int rows_index; + u32 instance; + u32 quirks; + u32 wake_en_mask; + int num_ports; + bool startup_done; + u32 power_mode_mask; +}; #endif