![Pierre-Louis Bossart](/assets/img/avatar_default.png)
In the existing SoundWire code, Master Devices are not explicitly represented - only SoundWire Slave Devices are exposed (the use of capital letters follows the SoundWire specification conventions). With the existing code, the bus is handled without using a proper device, and bus->dev typically points to a platform device. The right thing to do as discussed in multiple reviews is use a device for each bus. The sdw_master_device addition is done with minimal internal plumbing and not exposed externally. The existing API based on sdw_bus_master_add() and sdw_bus_master_delete() will deal with the sdw_master_device life cycle, which minimizes changes to existing drivers. Note that the Intel code will be modified in follow-up patches (no impact on any platform since the connection with ASoC is not supported upstream so far). Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Acked-by: Jaroslav Kysela <perex@perex.cz> Link: https://lore.kernel.org/r/20200518174322.31561-5-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
879 lines
23 KiB
C
879 lines
23 KiB
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2019, Linaro Limited
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#include <linux/clk.h>
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#include <linux/completion.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_irq.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/slimbus.h>
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#include <linux/soundwire/sdw.h>
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#include <linux/soundwire/sdw_registers.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "bus.h"
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#define SWRM_COMP_HW_VERSION 0x00
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#define SWRM_COMP_CFG_ADDR 0x04
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#define SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK BIT(1)
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#define SWRM_COMP_CFG_ENABLE_MSK BIT(0)
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#define SWRM_COMP_PARAMS 0x100
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#define SWRM_COMP_PARAMS_DOUT_PORTS_MASK GENMASK(4, 0)
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#define SWRM_COMP_PARAMS_DIN_PORTS_MASK GENMASK(9, 5)
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#define SWRM_INTERRUPT_STATUS 0x200
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#define SWRM_INTERRUPT_STATUS_RMSK GENMASK(16, 0)
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#define SWRM_INTERRUPT_STATUS_NEW_SLAVE_ATTACHED BIT(1)
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#define SWRM_INTERRUPT_STATUS_CHANGE_ENUM_SLAVE_STATUS BIT(2)
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#define SWRM_INTERRUPT_STATUS_CMD_ERROR BIT(7)
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#define SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED BIT(10)
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#define SWRM_INTERRUPT_MASK_ADDR 0x204
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#define SWRM_INTERRUPT_CLEAR 0x208
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#define SWRM_CMD_FIFO_WR_CMD 0x300
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#define SWRM_CMD_FIFO_RD_CMD 0x304
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#define SWRM_CMD_FIFO_CMD 0x308
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#define SWRM_CMD_FIFO_STATUS 0x30C
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#define SWRM_CMD_FIFO_CFG_ADDR 0x314
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#define SWRM_RD_WR_CMD_RETRIES 0x7
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#define SWRM_CMD_FIFO_RD_FIFO_ADDR 0x318
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#define SWRM_ENUMERATOR_CFG_ADDR 0x500
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#define SWRM_MCP_FRAME_CTRL_BANK_ADDR(m) (0x101C + 0x40 * (m))
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#define SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_SHFT 3
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#define SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK GENMASK(2, 0)
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#define SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK GENMASK(7, 3)
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#define SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_SHFT 0
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#define SWRM_MCP_CFG_ADDR 0x1048
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#define SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK GENMASK(21, 17)
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#define SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_SHFT 0x11
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#define SWRM_DEF_CMD_NO_PINGS 0x1f
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#define SWRM_MCP_STATUS 0x104C
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#define SWRM_MCP_STATUS_BANK_NUM_MASK BIT(0)
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#define SWRM_MCP_SLV_STATUS 0x1090
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#define SWRM_MCP_SLV_STATUS_MASK GENMASK(1, 0)
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#define SWRM_DP_PORT_CTRL_BANK(n, m) (0x1124 + 0x100 * (n - 1) + 0x40 * m)
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#define SWRM_DP_PORT_CTRL_EN_CHAN_SHFT 0x18
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#define SWRM_DP_PORT_CTRL_OFFSET2_SHFT 0x10
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#define SWRM_DP_PORT_CTRL_OFFSET1_SHFT 0x08
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#define SWRM_AHB_BRIDGE_WR_DATA_0 0xc85
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#define SWRM_AHB_BRIDGE_WR_ADDR_0 0xc89
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#define SWRM_AHB_BRIDGE_RD_ADDR_0 0xc8d
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#define SWRM_AHB_BRIDGE_RD_DATA_0 0xc91
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#define SWRM_REG_VAL_PACK(data, dev, id, reg) \
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((reg) | ((id) << 16) | ((dev) << 20) | ((data) << 24))
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#define SWRM_MAX_ROW_VAL 0 /* Rows = 48 */
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#define SWRM_DEFAULT_ROWS 48
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#define SWRM_MIN_COL_VAL 0 /* Cols = 2 */
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#define SWRM_DEFAULT_COL 16
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#define SWRM_MAX_COL_VAL 7
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#define SWRM_SPECIAL_CMD_ID 0xF
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#define MAX_FREQ_NUM 1
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#define TIMEOUT_MS (2 * HZ)
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#define QCOM_SWRM_MAX_RD_LEN 0xf
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#define QCOM_SDW_MAX_PORTS 14
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#define DEFAULT_CLK_FREQ 9600000
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#define SWRM_MAX_DAIS 0xF
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struct qcom_swrm_port_config {
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u8 si;
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u8 off1;
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u8 off2;
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};
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struct qcom_swrm_ctrl {
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struct sdw_bus bus;
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struct device *dev;
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struct regmap *regmap;
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struct completion *comp;
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struct work_struct slave_work;
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/* read/write lock */
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spinlock_t comp_lock;
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/* Port alloc/free lock */
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struct mutex port_lock;
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struct clk *hclk;
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u8 wr_cmd_id;
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u8 rd_cmd_id;
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int irq;
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unsigned int version;
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int num_din_ports;
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int num_dout_ports;
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unsigned long dout_port_mask;
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unsigned long din_port_mask;
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struct qcom_swrm_port_config pconfig[QCOM_SDW_MAX_PORTS];
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struct sdw_stream_runtime *sruntime[SWRM_MAX_DAIS];
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enum sdw_slave_status status[SDW_MAX_DEVICES];
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int (*reg_read)(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val);
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int (*reg_write)(struct qcom_swrm_ctrl *ctrl, int reg, int val);
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};
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#define to_qcom_sdw(b) container_of(b, struct qcom_swrm_ctrl, bus)
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static int qcom_swrm_abh_reg_read(struct qcom_swrm_ctrl *ctrl, int reg,
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u32 *val)
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{
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struct regmap *wcd_regmap = ctrl->regmap;
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int ret;
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/* pg register + offset */
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ret = regmap_bulk_write(wcd_regmap, SWRM_AHB_BRIDGE_RD_ADDR_0,
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(u8 *)®, 4);
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if (ret < 0)
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return SDW_CMD_FAIL;
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ret = regmap_bulk_read(wcd_regmap, SWRM_AHB_BRIDGE_RD_DATA_0,
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val, 4);
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if (ret < 0)
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return SDW_CMD_FAIL;
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return SDW_CMD_OK;
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}
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static int qcom_swrm_ahb_reg_write(struct qcom_swrm_ctrl *ctrl,
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int reg, int val)
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{
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struct regmap *wcd_regmap = ctrl->regmap;
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int ret;
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/* pg register + offset */
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ret = regmap_bulk_write(wcd_regmap, SWRM_AHB_BRIDGE_WR_DATA_0,
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(u8 *)&val, 4);
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if (ret)
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return SDW_CMD_FAIL;
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/* write address register */
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ret = regmap_bulk_write(wcd_regmap, SWRM_AHB_BRIDGE_WR_ADDR_0,
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(u8 *)®, 4);
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if (ret)
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return SDW_CMD_FAIL;
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return SDW_CMD_OK;
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}
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static int qcom_swrm_cmd_fifo_wr_cmd(struct qcom_swrm_ctrl *ctrl, u8 cmd_data,
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u8 dev_addr, u16 reg_addr)
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{
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DECLARE_COMPLETION_ONSTACK(comp);
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unsigned long flags;
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u32 val;
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int ret;
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spin_lock_irqsave(&ctrl->comp_lock, flags);
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ctrl->comp = ∁
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spin_unlock_irqrestore(&ctrl->comp_lock, flags);
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val = SWRM_REG_VAL_PACK(cmd_data, dev_addr,
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SWRM_SPECIAL_CMD_ID, reg_addr);
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ret = ctrl->reg_write(ctrl, SWRM_CMD_FIFO_WR_CMD, val);
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if (ret)
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goto err;
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ret = wait_for_completion_timeout(ctrl->comp,
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msecs_to_jiffies(TIMEOUT_MS));
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if (!ret)
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ret = SDW_CMD_IGNORED;
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else
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ret = SDW_CMD_OK;
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err:
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spin_lock_irqsave(&ctrl->comp_lock, flags);
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ctrl->comp = NULL;
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spin_unlock_irqrestore(&ctrl->comp_lock, flags);
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return ret;
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}
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static int qcom_swrm_cmd_fifo_rd_cmd(struct qcom_swrm_ctrl *ctrl,
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u8 dev_addr, u16 reg_addr,
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u32 len, u8 *rval)
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{
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int i, ret;
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u32 val;
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DECLARE_COMPLETION_ONSTACK(comp);
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unsigned long flags;
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spin_lock_irqsave(&ctrl->comp_lock, flags);
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ctrl->comp = ∁
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spin_unlock_irqrestore(&ctrl->comp_lock, flags);
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val = SWRM_REG_VAL_PACK(len, dev_addr, SWRM_SPECIAL_CMD_ID, reg_addr);
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ret = ctrl->reg_write(ctrl, SWRM_CMD_FIFO_RD_CMD, val);
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if (ret)
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goto err;
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ret = wait_for_completion_timeout(ctrl->comp,
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msecs_to_jiffies(TIMEOUT_MS));
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if (!ret) {
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ret = SDW_CMD_IGNORED;
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goto err;
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} else {
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ret = SDW_CMD_OK;
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}
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for (i = 0; i < len; i++) {
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ctrl->reg_read(ctrl, SWRM_CMD_FIFO_RD_FIFO_ADDR, &val);
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rval[i] = val & 0xFF;
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}
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err:
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spin_lock_irqsave(&ctrl->comp_lock, flags);
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ctrl->comp = NULL;
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spin_unlock_irqrestore(&ctrl->comp_lock, flags);
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return ret;
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}
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static void qcom_swrm_get_device_status(struct qcom_swrm_ctrl *ctrl)
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{
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u32 val;
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int i;
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ctrl->reg_read(ctrl, SWRM_MCP_SLV_STATUS, &val);
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for (i = 0; i < SDW_MAX_DEVICES; i++) {
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u32 s;
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s = (val >> (i * 2));
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s &= SWRM_MCP_SLV_STATUS_MASK;
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ctrl->status[i] = s;
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}
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}
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static irqreturn_t qcom_swrm_irq_handler(int irq, void *dev_id)
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{
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struct qcom_swrm_ctrl *ctrl = dev_id;
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u32 sts, value;
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unsigned long flags;
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ctrl->reg_read(ctrl, SWRM_INTERRUPT_STATUS, &sts);
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if (sts & SWRM_INTERRUPT_STATUS_CMD_ERROR) {
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ctrl->reg_read(ctrl, SWRM_CMD_FIFO_STATUS, &value);
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dev_err_ratelimited(ctrl->dev,
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"CMD error, fifo status 0x%x\n",
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value);
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ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CMD, 0x1);
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}
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if ((sts & SWRM_INTERRUPT_STATUS_NEW_SLAVE_ATTACHED) ||
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sts & SWRM_INTERRUPT_STATUS_CHANGE_ENUM_SLAVE_STATUS)
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schedule_work(&ctrl->slave_work);
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/**
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* clear the interrupt before complete() is called, as complete can
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* schedule new read/writes which require interrupts, clearing the
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* interrupt would avoid missing interrupts in such cases.
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*/
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ctrl->reg_write(ctrl, SWRM_INTERRUPT_CLEAR, sts);
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if (sts & SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED) {
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spin_lock_irqsave(&ctrl->comp_lock, flags);
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if (ctrl->comp)
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complete(ctrl->comp);
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spin_unlock_irqrestore(&ctrl->comp_lock, flags);
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}
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return IRQ_HANDLED;
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}
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static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
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{
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u32 val;
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/* Clear Rows and Cols */
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val = (SWRM_MAX_ROW_VAL << SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_SHFT |
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SWRM_MIN_COL_VAL << SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_SHFT);
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ctrl->reg_write(ctrl, SWRM_MCP_FRAME_CTRL_BANK_ADDR(0), val);
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/* Disable Auto enumeration */
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ctrl->reg_write(ctrl, SWRM_ENUMERATOR_CFG_ADDR, 0);
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/* Mask soundwire interrupts */
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ctrl->reg_write(ctrl, SWRM_INTERRUPT_MASK_ADDR,
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SWRM_INTERRUPT_STATUS_RMSK);
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/* Configure No pings */
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ctrl->reg_read(ctrl, SWRM_MCP_CFG_ADDR, &val);
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val &= ~SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK;
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val |= (SWRM_DEF_CMD_NO_PINGS <<
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SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_SHFT);
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ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val);
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/* Configure number of retries of a read/write cmd */
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ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR, SWRM_RD_WR_CMD_RETRIES);
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/* Set IRQ to PULSE */
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ctrl->reg_write(ctrl, SWRM_COMP_CFG_ADDR,
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SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK |
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SWRM_COMP_CFG_ENABLE_MSK);
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return 0;
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}
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static enum sdw_command_response qcom_swrm_xfer_msg(struct sdw_bus *bus,
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struct sdw_msg *msg)
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{
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struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
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int ret, i, len;
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if (msg->flags == SDW_MSG_FLAG_READ) {
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for (i = 0; i < msg->len;) {
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if ((msg->len - i) < QCOM_SWRM_MAX_RD_LEN)
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len = msg->len - i;
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else
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len = QCOM_SWRM_MAX_RD_LEN;
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ret = qcom_swrm_cmd_fifo_rd_cmd(ctrl, msg->dev_num,
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msg->addr + i, len,
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&msg->buf[i]);
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if (ret)
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return ret;
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i = i + len;
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}
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} else if (msg->flags == SDW_MSG_FLAG_WRITE) {
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for (i = 0; i < msg->len; i++) {
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ret = qcom_swrm_cmd_fifo_wr_cmd(ctrl, msg->buf[i],
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msg->dev_num,
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msg->addr + i);
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if (ret)
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return SDW_CMD_IGNORED;
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}
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}
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return SDW_CMD_OK;
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}
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static int qcom_swrm_pre_bank_switch(struct sdw_bus *bus)
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{
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u32 reg = SWRM_MCP_FRAME_CTRL_BANK_ADDR(bus->params.next_bank);
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struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
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u32 val;
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ctrl->reg_read(ctrl, reg, &val);
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val &= ~SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK;
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val &= ~SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK;
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val |= (SWRM_MAX_ROW_VAL << SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_SHFT |
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SWRM_MAX_COL_VAL << SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_SHFT);
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return ctrl->reg_write(ctrl, reg, val);
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}
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static int qcom_swrm_port_params(struct sdw_bus *bus,
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struct sdw_port_params *p_params,
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unsigned int bank)
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{
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/* TBD */
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return 0;
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}
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static int qcom_swrm_transport_params(struct sdw_bus *bus,
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struct sdw_transport_params *params,
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enum sdw_reg_bank bank)
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{
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struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
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u32 value;
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value = params->offset1 << SWRM_DP_PORT_CTRL_OFFSET1_SHFT;
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value |= params->offset2 << SWRM_DP_PORT_CTRL_OFFSET2_SHFT;
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value |= params->sample_interval - 1;
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return ctrl->reg_write(ctrl,
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SWRM_DP_PORT_CTRL_BANK((params->port_num), bank),
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value);
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}
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static int qcom_swrm_port_enable(struct sdw_bus *bus,
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struct sdw_enable_ch *enable_ch,
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unsigned int bank)
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{
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u32 reg = SWRM_DP_PORT_CTRL_BANK(enable_ch->port_num, bank);
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struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
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u32 val;
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ctrl->reg_read(ctrl, reg, &val);
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if (enable_ch->enable)
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val |= (enable_ch->ch_mask << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT);
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else
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val &= ~(0xff << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT);
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return ctrl->reg_write(ctrl, reg, val);
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}
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static struct sdw_master_port_ops qcom_swrm_port_ops = {
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.dpn_set_port_params = qcom_swrm_port_params,
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.dpn_set_port_transport_params = qcom_swrm_transport_params,
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.dpn_port_enable_ch = qcom_swrm_port_enable,
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};
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static struct sdw_master_ops qcom_swrm_ops = {
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.xfer_msg = qcom_swrm_xfer_msg,
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.pre_bank_switch = qcom_swrm_pre_bank_switch,
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};
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static int qcom_swrm_compute_params(struct sdw_bus *bus)
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{
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struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus);
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struct sdw_master_runtime *m_rt;
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struct sdw_slave_runtime *s_rt;
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struct sdw_port_runtime *p_rt;
|
|
struct qcom_swrm_port_config *pcfg;
|
|
int i = 0;
|
|
|
|
list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) {
|
|
list_for_each_entry(p_rt, &m_rt->port_list, port_node) {
|
|
pcfg = &ctrl->pconfig[p_rt->num - 1];
|
|
p_rt->transport_params.port_num = p_rt->num;
|
|
p_rt->transport_params.sample_interval = pcfg->si + 1;
|
|
p_rt->transport_params.offset1 = pcfg->off1;
|
|
p_rt->transport_params.offset2 = pcfg->off2;
|
|
}
|
|
|
|
list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
|
|
list_for_each_entry(p_rt, &s_rt->port_list, port_node) {
|
|
pcfg = &ctrl->pconfig[i];
|
|
p_rt->transport_params.port_num = p_rt->num;
|
|
p_rt->transport_params.sample_interval =
|
|
pcfg->si + 1;
|
|
p_rt->transport_params.offset1 = pcfg->off1;
|
|
p_rt->transport_params.offset2 = pcfg->off2;
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u32 qcom_swrm_freq_tbl[MAX_FREQ_NUM] = {
|
|
DEFAULT_CLK_FREQ,
|
|
};
|
|
|
|
static void qcom_swrm_slave_wq(struct work_struct *work)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl =
|
|
container_of(work, struct qcom_swrm_ctrl, slave_work);
|
|
|
|
qcom_swrm_get_device_status(ctrl);
|
|
sdw_handle_slave_status(&ctrl->bus, ctrl->status);
|
|
}
|
|
|
|
|
|
static void qcom_swrm_stream_free_ports(struct qcom_swrm_ctrl *ctrl,
|
|
struct sdw_stream_runtime *stream)
|
|
{
|
|
struct sdw_master_runtime *m_rt;
|
|
struct sdw_port_runtime *p_rt;
|
|
unsigned long *port_mask;
|
|
|
|
mutex_lock(&ctrl->port_lock);
|
|
|
|
list_for_each_entry(m_rt, &stream->master_list, stream_node) {
|
|
if (m_rt->direction == SDW_DATA_DIR_RX)
|
|
port_mask = &ctrl->dout_port_mask;
|
|
else
|
|
port_mask = &ctrl->din_port_mask;
|
|
|
|
list_for_each_entry(p_rt, &m_rt->port_list, port_node)
|
|
clear_bit(p_rt->num - 1, port_mask);
|
|
}
|
|
|
|
mutex_unlock(&ctrl->port_lock);
|
|
}
|
|
|
|
static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
|
|
struct sdw_stream_runtime *stream,
|
|
struct snd_pcm_hw_params *params,
|
|
int direction)
|
|
{
|
|
struct sdw_port_config pconfig[QCOM_SDW_MAX_PORTS];
|
|
struct sdw_stream_config sconfig;
|
|
struct sdw_master_runtime *m_rt;
|
|
struct sdw_slave_runtime *s_rt;
|
|
struct sdw_port_runtime *p_rt;
|
|
unsigned long *port_mask;
|
|
int i, maxport, pn, nports = 0, ret = 0;
|
|
|
|
mutex_lock(&ctrl->port_lock);
|
|
list_for_each_entry(m_rt, &stream->master_list, stream_node) {
|
|
if (m_rt->direction == SDW_DATA_DIR_RX) {
|
|
maxport = ctrl->num_dout_ports;
|
|
port_mask = &ctrl->dout_port_mask;
|
|
} else {
|
|
maxport = ctrl->num_din_ports;
|
|
port_mask = &ctrl->din_port_mask;
|
|
}
|
|
|
|
list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
|
|
list_for_each_entry(p_rt, &s_rt->port_list, port_node) {
|
|
/* Port numbers start from 1 - 14*/
|
|
pn = find_first_zero_bit(port_mask, maxport);
|
|
if (pn > (maxport - 1)) {
|
|
dev_err(ctrl->dev, "All ports busy\n");
|
|
ret = -EBUSY;
|
|
goto err;
|
|
}
|
|
set_bit(pn, port_mask);
|
|
pconfig[nports].num = pn + 1;
|
|
pconfig[nports].ch_mask = p_rt->ch_mask;
|
|
nports++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (direction == SNDRV_PCM_STREAM_CAPTURE)
|
|
sconfig.direction = SDW_DATA_DIR_TX;
|
|
else
|
|
sconfig.direction = SDW_DATA_DIR_RX;
|
|
|
|
/* hw parameters wil be ignored as we only support PDM */
|
|
sconfig.ch_count = 1;
|
|
sconfig.frame_rate = params_rate(params);
|
|
sconfig.type = stream->type;
|
|
sconfig.bps = 1;
|
|
sdw_stream_add_master(&ctrl->bus, &sconfig, pconfig,
|
|
nports, stream);
|
|
err:
|
|
if (ret) {
|
|
for (i = 0; i < nports; i++)
|
|
clear_bit(pconfig[i].num - 1, port_mask);
|
|
}
|
|
|
|
mutex_unlock(&ctrl->port_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int qcom_swrm_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dai->dev);
|
|
struct sdw_stream_runtime *sruntime = ctrl->sruntime[dai->id];
|
|
int ret;
|
|
|
|
ret = qcom_swrm_stream_alloc_ports(ctrl, sruntime, params,
|
|
substream->stream);
|
|
if (ret)
|
|
qcom_swrm_stream_free_ports(ctrl, sruntime);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int qcom_swrm_hw_free(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dai->dev);
|
|
struct sdw_stream_runtime *sruntime = ctrl->sruntime[dai->id];
|
|
|
|
qcom_swrm_stream_free_ports(ctrl, sruntime);
|
|
sdw_stream_remove_master(&ctrl->bus, sruntime);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qcom_swrm_set_sdw_stream(struct snd_soc_dai *dai,
|
|
void *stream, int direction)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dai->dev);
|
|
|
|
ctrl->sruntime[dai->id] = stream;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void *qcom_swrm_get_sdw_stream(struct snd_soc_dai *dai, int direction)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dai->dev);
|
|
|
|
return ctrl->sruntime[dai->id];
|
|
}
|
|
|
|
static int qcom_swrm_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dai->dev);
|
|
struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
|
struct sdw_stream_runtime *sruntime;
|
|
struct snd_soc_dai *codec_dai;
|
|
int ret, i;
|
|
|
|
sruntime = sdw_alloc_stream(dai->name);
|
|
if (!sruntime)
|
|
return -ENOMEM;
|
|
|
|
ctrl->sruntime[dai->id] = sruntime;
|
|
|
|
for_each_rtd_codec_dais(rtd, i, codec_dai) {
|
|
ret = snd_soc_dai_set_sdw_stream(codec_dai, sruntime,
|
|
substream->stream);
|
|
if (ret < 0 && ret != -ENOTSUPP) {
|
|
dev_err(dai->dev, "Failed to set sdw stream on %s",
|
|
codec_dai->name);
|
|
sdw_release_stream(sruntime);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void qcom_swrm_shutdown(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dai->dev);
|
|
|
|
sdw_release_stream(ctrl->sruntime[dai->id]);
|
|
ctrl->sruntime[dai->id] = NULL;
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops qcom_swrm_pdm_dai_ops = {
|
|
.hw_params = qcom_swrm_hw_params,
|
|
.hw_free = qcom_swrm_hw_free,
|
|
.startup = qcom_swrm_startup,
|
|
.shutdown = qcom_swrm_shutdown,
|
|
.set_sdw_stream = qcom_swrm_set_sdw_stream,
|
|
.get_sdw_stream = qcom_swrm_get_sdw_stream,
|
|
};
|
|
|
|
static const struct snd_soc_component_driver qcom_swrm_dai_component = {
|
|
.name = "soundwire",
|
|
};
|
|
|
|
static int qcom_swrm_register_dais(struct qcom_swrm_ctrl *ctrl)
|
|
{
|
|
int num_dais = ctrl->num_dout_ports + ctrl->num_din_ports;
|
|
struct snd_soc_dai_driver *dais;
|
|
struct snd_soc_pcm_stream *stream;
|
|
struct device *dev = ctrl->dev;
|
|
int i;
|
|
|
|
/* PDM dais are only tested for now */
|
|
dais = devm_kcalloc(dev, num_dais, sizeof(*dais), GFP_KERNEL);
|
|
if (!dais)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < num_dais; i++) {
|
|
dais[i].name = devm_kasprintf(dev, GFP_KERNEL, "SDW Pin%d", i);
|
|
if (!dais[i].name)
|
|
return -ENOMEM;
|
|
|
|
if (i < ctrl->num_dout_ports)
|
|
stream = &dais[i].playback;
|
|
else
|
|
stream = &dais[i].capture;
|
|
|
|
stream->channels_min = 1;
|
|
stream->channels_max = 1;
|
|
stream->rates = SNDRV_PCM_RATE_48000;
|
|
stream->formats = SNDRV_PCM_FMTBIT_S16_LE;
|
|
|
|
dais[i].ops = &qcom_swrm_pdm_dai_ops;
|
|
dais[i].id = i;
|
|
}
|
|
|
|
return devm_snd_soc_register_component(ctrl->dev,
|
|
&qcom_swrm_dai_component,
|
|
dais, num_dais);
|
|
}
|
|
|
|
static int qcom_swrm_get_port_config(struct qcom_swrm_ctrl *ctrl)
|
|
{
|
|
struct device_node *np = ctrl->dev->of_node;
|
|
u8 off1[QCOM_SDW_MAX_PORTS];
|
|
u8 off2[QCOM_SDW_MAX_PORTS];
|
|
u8 si[QCOM_SDW_MAX_PORTS];
|
|
int i, ret, nports, val;
|
|
|
|
ctrl->reg_read(ctrl, SWRM_COMP_PARAMS, &val);
|
|
|
|
ctrl->num_dout_ports = val & SWRM_COMP_PARAMS_DOUT_PORTS_MASK;
|
|
ctrl->num_din_ports = (val & SWRM_COMP_PARAMS_DIN_PORTS_MASK) >> 5;
|
|
|
|
ret = of_property_read_u32(np, "qcom,din-ports", &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val > ctrl->num_din_ports)
|
|
return -EINVAL;
|
|
|
|
ctrl->num_din_ports = val;
|
|
|
|
ret = of_property_read_u32(np, "qcom,dout-ports", &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val > ctrl->num_dout_ports)
|
|
return -EINVAL;
|
|
|
|
ctrl->num_dout_ports = val;
|
|
|
|
nports = ctrl->num_dout_ports + ctrl->num_din_ports;
|
|
|
|
ret = of_property_read_u8_array(np, "qcom,ports-offset1",
|
|
off1, nports);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = of_property_read_u8_array(np, "qcom,ports-offset2",
|
|
off2, nports);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = of_property_read_u8_array(np, "qcom,ports-sinterval-low",
|
|
si, nports);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (i = 0; i < nports; i++) {
|
|
ctrl->pconfig[i].si = si[i];
|
|
ctrl->pconfig[i].off1 = off1[i];
|
|
ctrl->pconfig[i].off2 = off2[i];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int qcom_swrm_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct sdw_master_prop *prop;
|
|
struct sdw_bus_params *params;
|
|
struct qcom_swrm_ctrl *ctrl;
|
|
int ret;
|
|
u32 val;
|
|
|
|
ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
|
|
if (!ctrl)
|
|
return -ENOMEM;
|
|
|
|
if (dev->parent->bus == &slimbus_bus) {
|
|
ctrl->reg_read = qcom_swrm_abh_reg_read;
|
|
ctrl->reg_write = qcom_swrm_ahb_reg_write;
|
|
ctrl->regmap = dev_get_regmap(dev->parent, NULL);
|
|
if (!ctrl->regmap)
|
|
return -EINVAL;
|
|
} else {
|
|
/* Only WCD based SoundWire controller is supported */
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
ctrl->irq = of_irq_get(dev->of_node, 0);
|
|
if (ctrl->irq < 0) {
|
|
ret = ctrl->irq;
|
|
goto err_init;
|
|
}
|
|
|
|
ctrl->hclk = devm_clk_get(dev, "iface");
|
|
if (IS_ERR(ctrl->hclk)) {
|
|
ret = PTR_ERR(ctrl->hclk);
|
|
goto err_init;
|
|
}
|
|
|
|
clk_prepare_enable(ctrl->hclk);
|
|
|
|
ctrl->dev = dev;
|
|
dev_set_drvdata(&pdev->dev, ctrl);
|
|
spin_lock_init(&ctrl->comp_lock);
|
|
mutex_init(&ctrl->port_lock);
|
|
INIT_WORK(&ctrl->slave_work, qcom_swrm_slave_wq);
|
|
|
|
ctrl->bus.ops = &qcom_swrm_ops;
|
|
ctrl->bus.port_ops = &qcom_swrm_port_ops;
|
|
ctrl->bus.compute_params = &qcom_swrm_compute_params;
|
|
|
|
ret = qcom_swrm_get_port_config(ctrl);
|
|
if (ret)
|
|
goto err_clk;
|
|
|
|
params = &ctrl->bus.params;
|
|
params->max_dr_freq = DEFAULT_CLK_FREQ;
|
|
params->curr_dr_freq = DEFAULT_CLK_FREQ;
|
|
params->col = SWRM_DEFAULT_COL;
|
|
params->row = SWRM_DEFAULT_ROWS;
|
|
ctrl->reg_read(ctrl, SWRM_MCP_STATUS, &val);
|
|
params->curr_bank = val & SWRM_MCP_STATUS_BANK_NUM_MASK;
|
|
params->next_bank = !params->curr_bank;
|
|
|
|
prop = &ctrl->bus.prop;
|
|
prop->max_clk_freq = DEFAULT_CLK_FREQ;
|
|
prop->num_clk_gears = 0;
|
|
prop->num_clk_freq = MAX_FREQ_NUM;
|
|
prop->clk_freq = &qcom_swrm_freq_tbl[0];
|
|
prop->default_col = SWRM_DEFAULT_COL;
|
|
prop->default_row = SWRM_DEFAULT_ROWS;
|
|
|
|
ctrl->reg_read(ctrl, SWRM_COMP_HW_VERSION, &ctrl->version);
|
|
|
|
ret = devm_request_threaded_irq(dev, ctrl->irq, NULL,
|
|
qcom_swrm_irq_handler,
|
|
IRQF_TRIGGER_RISING |
|
|
IRQF_ONESHOT,
|
|
"soundwire", ctrl);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to request soundwire irq\n");
|
|
goto err_clk;
|
|
}
|
|
|
|
ret = sdw_bus_master_add(&ctrl->bus, dev, dev->fwnode);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to register Soundwire controller (%d)\n",
|
|
ret);
|
|
goto err_clk;
|
|
}
|
|
|
|
qcom_swrm_init(ctrl);
|
|
ret = qcom_swrm_register_dais(ctrl);
|
|
if (ret)
|
|
goto err_master_add;
|
|
|
|
dev_info(dev, "Qualcomm Soundwire controller v%x.%x.%x Registered\n",
|
|
(ctrl->version >> 24) & 0xff, (ctrl->version >> 16) & 0xff,
|
|
ctrl->version & 0xffff);
|
|
|
|
return 0;
|
|
|
|
err_master_add:
|
|
sdw_bus_master_delete(&ctrl->bus);
|
|
err_clk:
|
|
clk_disable_unprepare(ctrl->hclk);
|
|
err_init:
|
|
return ret;
|
|
}
|
|
|
|
static int qcom_swrm_remove(struct platform_device *pdev)
|
|
{
|
|
struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(&pdev->dev);
|
|
|
|
sdw_bus_master_delete(&ctrl->bus);
|
|
clk_disable_unprepare(ctrl->hclk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id qcom_swrm_of_match[] = {
|
|
{ .compatible = "qcom,soundwire-v1.3.0", },
|
|
{/* sentinel */},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, qcom_swrm_of_match);
|
|
|
|
static struct platform_driver qcom_swrm_driver = {
|
|
.probe = &qcom_swrm_probe,
|
|
.remove = &qcom_swrm_remove,
|
|
.driver = {
|
|
.name = "qcom-soundwire",
|
|
.of_match_table = qcom_swrm_of_match,
|
|
}
|
|
};
|
|
module_platform_driver(qcom_swrm_driver);
|
|
|
|
MODULE_DESCRIPTION("Qualcomm soundwire driver");
|
|
MODULE_LICENSE("GPL v2");
|