| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Srinivas Kandagatla | 7525 | 95.65% | 32 | 55.17% |
| Jonathan Marek | 123 | 1.56% | 5 | 8.62% |
| Srinivasa Rao Mandadapu | 106 | 1.35% | 6 | 10.34% |
| Pierre-Louis Bossart | 59 | 0.75% | 7 | 12.07% |
| Vinod Koul | 34 | 0.43% | 3 | 5.17% |
| Kuninori Morimoto | 15 | 0.19% | 2 | 3.45% |
| Zou Wei | 2 | 0.03% | 1 | 1.72% |
| Rikard Falkeborn | 2 | 0.03% | 1 | 1.72% |
| Dan Carpenter | 1 | 0.01% | 1 | 1.72% |
| Total | 7867 | 58 |
// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2019, Linaro Limited #include <linux/clk.h> #include <linux/completion.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/debugfs.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_device.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> #include <linux/reset.h> #include <linux/slab.h> #include <linux/pm_wakeirq.h> #include <linux/slimbus.h> #include <linux/soundwire/sdw.h> #include <linux/soundwire/sdw_registers.h> #include <sound/pcm_params.h> #include <sound/soc.h> #include "bus.h" #define SWRM_COMP_SW_RESET 0x008 #define SWRM_COMP_STATUS 0x014 #define SWRM_LINK_MANAGER_EE 0x018 #define SWRM_EE_CPU 1 #define SWRM_FRM_GEN_ENABLED BIT(0) #define SWRM_COMP_HW_VERSION 0x00 #define SWRM_COMP_CFG_ADDR 0x04 #define SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK BIT(1) #define SWRM_COMP_CFG_ENABLE_MSK BIT(0) #define SWRM_COMP_PARAMS 0x100 #define SWRM_COMP_PARAMS_WR_FIFO_DEPTH GENMASK(14, 10) #define SWRM_COMP_PARAMS_RD_FIFO_DEPTH GENMASK(19, 15) #define SWRM_COMP_PARAMS_DOUT_PORTS_MASK GENMASK(4, 0) #define SWRM_COMP_PARAMS_DIN_PORTS_MASK GENMASK(9, 5) #define SWRM_COMP_MASTER_ID 0x104 #define SWRM_INTERRUPT_STATUS 0x200 #define SWRM_INTERRUPT_STATUS_RMSK GENMASK(16, 0) #define SWRM_INTERRUPT_STATUS_SLAVE_PEND_IRQ BIT(0) #define SWRM_INTERRUPT_STATUS_NEW_SLAVE_ATTACHED BIT(1) #define SWRM_INTERRUPT_STATUS_CHANGE_ENUM_SLAVE_STATUS BIT(2) #define SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET BIT(3) #define SWRM_INTERRUPT_STATUS_RD_FIFO_OVERFLOW BIT(4) #define SWRM_INTERRUPT_STATUS_RD_FIFO_UNDERFLOW BIT(5) #define SWRM_INTERRUPT_STATUS_WR_CMD_FIFO_OVERFLOW BIT(6) #define SWRM_INTERRUPT_STATUS_CMD_ERROR BIT(7) #define SWRM_INTERRUPT_STATUS_DOUT_PORT_COLLISION BIT(8) #define SWRM_INTERRUPT_STATUS_READ_EN_RD_VALID_MISMATCH BIT(9) #define SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED BIT(10) #define SWRM_INTERRUPT_STATUS_BUS_RESET_FINISHED_V2 BIT(13) #define SWRM_INTERRUPT_STATUS_CLK_STOP_FINISHED_V2 BIT(14) #define SWRM_INTERRUPT_STATUS_EXT_CLK_STOP_WAKEUP BIT(16) #define SWRM_INTERRUPT_MAX 17 #define SWRM_INTERRUPT_MASK_ADDR 0x204 #define SWRM_INTERRUPT_CLEAR 0x208 #define SWRM_INTERRUPT_CPU_EN 0x210 #define SWRM_CMD_FIFO_WR_CMD 0x300 #define SWRM_CMD_FIFO_RD_CMD 0x304 #define SWRM_CMD_FIFO_CMD 0x308 #define SWRM_CMD_FIFO_FLUSH 0x1 #define SWRM_CMD_FIFO_STATUS 0x30C #define SWRM_RD_CMD_FIFO_CNT_MASK GENMASK(20, 16) #define SWRM_WR_CMD_FIFO_CNT_MASK GENMASK(12, 8) #define SWRM_CMD_FIFO_CFG_ADDR 0x314 #define SWRM_CONTINUE_EXEC_ON_CMD_IGNORE BIT(31) #define SWRM_RD_WR_CMD_RETRIES 0x7 #define SWRM_CMD_FIFO_RD_FIFO_ADDR 0x318 #define SWRM_RD_FIFO_CMD_ID_MASK GENMASK(11, 8) #define SWRM_ENUMERATOR_CFG_ADDR 0x500 #define SWRM_ENUMERATOR_SLAVE_DEV_ID_1(m) (0x530 + 0x8 * (m)) #define SWRM_ENUMERATOR_SLAVE_DEV_ID_2(m) (0x534 + 0x8 * (m)) #define SWRM_MCP_FRAME_CTRL_BANK_ADDR(m) (0x101C + 0x40 * (m)) #define SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK GENMASK(2, 0) #define SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK GENMASK(7, 3) #define SWRM_MCP_BUS_CTRL 0x1044 #define SWRM_MCP_BUS_CLK_START BIT(1) #define SWRM_MCP_CFG_ADDR 0x1048 #define SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK GENMASK(21, 17) #define SWRM_DEF_CMD_NO_PINGS 0x1f #define SWRM_MCP_STATUS 0x104C #define SWRM_MCP_STATUS_BANK_NUM_MASK BIT(0) #define SWRM_MCP_SLV_STATUS 0x1090 #define SWRM_MCP_SLV_STATUS_MASK GENMASK(1, 0) #define SWRM_MCP_SLV_STATUS_SZ 2 #define SWRM_DP_PORT_CTRL_BANK(n, m) (0x1124 + 0x100 * (n - 1) + 0x40 * m) #define SWRM_DP_PORT_CTRL_2_BANK(n, m) (0x1128 + 0x100 * (n - 1) + 0x40 * m) #define SWRM_DP_BLOCK_CTRL_1(n) (0x112C + 0x100 * (n - 1)) #define SWRM_DP_BLOCK_CTRL2_BANK(n, m) (0x1130 + 0x100 * (n - 1) + 0x40 * m) #define SWRM_DP_PORT_HCTRL_BANK(n, m) (0x1134 + 0x100 * (n - 1) + 0x40 * m) #define SWRM_DP_BLOCK_CTRL3_BANK(n, m) (0x1138 + 0x100 * (n - 1) + 0x40 * m) #define SWRM_DIN_DPn_PCM_PORT_CTRL(n) (0x1054 + 0x100 * (n - 1)) #define SWR_MSTR_MAX_REG_ADDR (0x1740) #define SWRM_DP_PORT_CTRL_EN_CHAN_SHFT 0x18 #define SWRM_DP_PORT_CTRL_OFFSET2_SHFT 0x10 #define SWRM_DP_PORT_CTRL_OFFSET1_SHFT 0x08 #define SWRM_AHB_BRIDGE_WR_DATA_0 0xc85 #define SWRM_AHB_BRIDGE_WR_ADDR_0 0xc89 #define SWRM_AHB_BRIDGE_RD_ADDR_0 0xc8d #define SWRM_AHB_BRIDGE_RD_DATA_0 0xc91 #define SWRM_REG_VAL_PACK(data, dev, id, reg) \ ((reg) | ((id) << 16) | ((dev) << 20) | ((data) << 24)) #define MAX_FREQ_NUM 1 #define TIMEOUT_MS 100 #define QCOM_SWRM_MAX_RD_LEN 0x1 #define QCOM_SDW_MAX_PORTS 14 #define DEFAULT_CLK_FREQ 9600000 #define SWRM_MAX_DAIS 0xF #define SWR_INVALID_PARAM 0xFF #define SWR_HSTOP_MAX_VAL 0xF #define SWR_HSTART_MIN_VAL 0x0 #define SWR_BROADCAST_CMD_ID 0x0F #define SWR_MAX_CMD_ID 14 #define MAX_FIFO_RD_RETRY 3 #define SWR_OVERFLOW_RETRY_COUNT 30 #define SWRM_LINK_STATUS_RETRY_CNT 100 enum { MASTER_ID_WSA = 1, MASTER_ID_RX, MASTER_ID_TX }; struct qcom_swrm_port_config { u8 si; u8 off1; u8 off2; u8 bp_mode; u8 hstart; u8 hstop; u8 word_length; u8 blk_group_count; u8 lane_control; }; struct qcom_swrm_ctrl { struct sdw_bus bus; struct device *dev; struct regmap *regmap; void __iomem *mmio; struct reset_control *audio_cgcr; #ifdef CONFIG_DEBUG_FS struct dentry *debugfs; #endif struct completion broadcast; struct completion enumeration; struct work_struct slave_work; /* Port alloc/free lock */ struct mutex port_lock; struct clk *hclk; u8 wr_cmd_id; u8 rd_cmd_id; int irq; unsigned int version; int wake_irq; int num_din_ports; int num_dout_ports; int cols_index; int rows_index; unsigned long dout_port_mask; unsigned long din_port_mask; u32 intr_mask; u8 rcmd_id; u8 wcmd_id; struct qcom_swrm_port_config pconfig[QCOM_SDW_MAX_PORTS]; struct sdw_stream_runtime *sruntime[SWRM_MAX_DAIS]; enum sdw_slave_status status[SDW_MAX_DEVICES + 1]; int (*reg_read)(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val); int (*reg_write)(struct qcom_swrm_ctrl *ctrl, int reg, int val); u32 slave_status; u32 wr_fifo_depth; u32 rd_fifo_depth; bool clock_stop_not_supported; }; struct qcom_swrm_data { u32 default_cols; u32 default_rows; bool sw_clk_gate_required; }; static const struct qcom_swrm_data swrm_v1_3_data = { .default_rows = 48, .default_cols = 16, }; static const struct qcom_swrm_data swrm_v1_5_data = { .default_rows = 50, .default_cols = 16, }; static const struct qcom_swrm_data swrm_v1_6_data = { .default_rows = 50, .default_cols = 16, .sw_clk_gate_required = true, }; #define to_qcom_sdw(b) container_of(b, struct qcom_swrm_ctrl, bus) static int qcom_swrm_ahb_reg_read(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val) { struct regmap *wcd_regmap = ctrl->regmap; int ret; /* pg register + offset */ ret = regmap_bulk_write(wcd_regmap, SWRM_AHB_BRIDGE_RD_ADDR_0, (u8 *)®, 4); if (ret < 0) return SDW_CMD_FAIL; ret = regmap_bulk_read(wcd_regmap, SWRM_AHB_BRIDGE_RD_DATA_0, val, 4); if (ret < 0) return SDW_CMD_FAIL; return SDW_CMD_OK; } static int qcom_swrm_ahb_reg_write(struct qcom_swrm_ctrl *ctrl, int reg, int val) { struct regmap *wcd_regmap = ctrl->regmap; int ret; /* pg register + offset */ ret = regmap_bulk_write(wcd_regmap, SWRM_AHB_BRIDGE_WR_DATA_0, (u8 *)&val, 4); if (ret) return SDW_CMD_FAIL; /* write address register */ ret = regmap_bulk_write(wcd_regmap, SWRM_AHB_BRIDGE_WR_ADDR_0, (u8 *)®, 4); if (ret) return SDW_CMD_FAIL; return SDW_CMD_OK; } static int qcom_swrm_cpu_reg_read(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val) { *val = readl(ctrl->mmio + reg); return SDW_CMD_OK; } static int qcom_swrm_cpu_reg_write(struct qcom_swrm_ctrl *ctrl, int reg, int val) { writel(val, ctrl->mmio + reg); return SDW_CMD_OK; } static u32 swrm_get_packed_reg_val(u8 *cmd_id, u8 cmd_data, u8 dev_addr, u16 reg_addr) { u32 val; u8 id = *cmd_id; if (id != SWR_BROADCAST_CMD_ID) { if (id < SWR_MAX_CMD_ID) id += 1; else id = 0; *cmd_id = id; } val = SWRM_REG_VAL_PACK(cmd_data, dev_addr, id, reg_addr); return val; } static int swrm_wait_for_rd_fifo_avail(struct qcom_swrm_ctrl *swrm) { u32 fifo_outstanding_data, value; int fifo_retry_count = SWR_OVERFLOW_RETRY_COUNT; do { /* Check for fifo underflow during read */ swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value); fifo_outstanding_data = FIELD_GET(SWRM_RD_CMD_FIFO_CNT_MASK, value); /* Check if read data is available in read fifo */ if (fifo_outstanding_data > 0) return 0; usleep_range(500, 510); } while (fifo_retry_count--); if (fifo_outstanding_data == 0) { dev_err_ratelimited(swrm->dev, "%s err read underflow\n", __func__); return -EIO; } return 0; } static int swrm_wait_for_wr_fifo_avail(struct qcom_swrm_ctrl *swrm) { u32 fifo_outstanding_cmds, value; int fifo_retry_count = SWR_OVERFLOW_RETRY_COUNT; do { /* Check for fifo overflow during write */ swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value); fifo_outstanding_cmds = FIELD_GET(SWRM_WR_CMD_FIFO_CNT_MASK, value); /* Check for space in write fifo before writing */ if (fifo_outstanding_cmds < swrm->wr_fifo_depth) return 0; usleep_range(500, 510); } while (fifo_retry_count--); if (fifo_outstanding_cmds == swrm->wr_fifo_depth) { dev_err_ratelimited(swrm->dev, "%s err write overflow\n", __func__); return -EIO; } return 0; } static int qcom_swrm_cmd_fifo_wr_cmd(struct qcom_swrm_ctrl *swrm, u8 cmd_data, u8 dev_addr, u16 reg_addr) { u32 val; int ret = 0; u8 cmd_id = 0x0; if (dev_addr == SDW_BROADCAST_DEV_NUM) { cmd_id = SWR_BROADCAST_CMD_ID; val = swrm_get_packed_reg_val(&cmd_id, cmd_data, dev_addr, reg_addr); } else { val = swrm_get_packed_reg_val(&swrm->wcmd_id, cmd_data, dev_addr, reg_addr); } if (swrm_wait_for_wr_fifo_avail(swrm)) return SDW_CMD_FAIL_OTHER; if (cmd_id == SWR_BROADCAST_CMD_ID) reinit_completion(&swrm->broadcast); /* Its assumed that write is okay as we do not get any status back */ swrm->reg_write(swrm, SWRM_CMD_FIFO_WR_CMD, val); /* version 1.3 or less */ if (swrm->version <= 0x01030000) usleep_range(150, 155); if (cmd_id == SWR_BROADCAST_CMD_ID) { /* * sleep for 10ms for MSM soundwire variant to allow broadcast * command to complete. */ ret = wait_for_completion_timeout(&swrm->broadcast, msecs_to_jiffies(TIMEOUT_MS)); if (!ret) ret = SDW_CMD_IGNORED; else ret = SDW_CMD_OK; } else { ret = SDW_CMD_OK; } return ret; } static int qcom_swrm_cmd_fifo_rd_cmd(struct qcom_swrm_ctrl *swrm, u8 dev_addr, u16 reg_addr, u32 len, u8 *rval) { u32 cmd_data, cmd_id, val, retry_attempt = 0; val = swrm_get_packed_reg_val(&swrm->rcmd_id, len, dev_addr, reg_addr); /* * Check for outstanding cmd wrt. write fifo depth to avoid * overflow as read will also increase write fifo cnt. */ swrm_wait_for_wr_fifo_avail(swrm); /* wait for FIFO RD to complete to avoid overflow */ usleep_range(100, 105); swrm->reg_write(swrm, SWRM_CMD_FIFO_RD_CMD, val); /* wait for FIFO RD CMD complete to avoid overflow */ usleep_range(250, 255); if (swrm_wait_for_rd_fifo_avail(swrm)) return SDW_CMD_FAIL_OTHER; do { swrm->reg_read(swrm, SWRM_CMD_FIFO_RD_FIFO_ADDR, &cmd_data); rval[0] = cmd_data & 0xFF; cmd_id = FIELD_GET(SWRM_RD_FIFO_CMD_ID_MASK, cmd_data); if (cmd_id != swrm->rcmd_id) { if (retry_attempt < (MAX_FIFO_RD_RETRY - 1)) { /* wait 500 us before retry on fifo read failure */ usleep_range(500, 505); swrm->reg_write(swrm, SWRM_CMD_FIFO_CMD, SWRM_CMD_FIFO_FLUSH); swrm->reg_write(swrm, SWRM_CMD_FIFO_RD_CMD, val); } retry_attempt++; } else { return SDW_CMD_OK; } } while (retry_attempt < MAX_FIFO_RD_RETRY); dev_err(swrm->dev, "failed to read fifo: reg: 0x%x, rcmd_id: 0x%x,\ dev_num: 0x%x, cmd_data: 0x%x\n", reg_addr, swrm->rcmd_id, dev_addr, cmd_data); return SDW_CMD_IGNORED; } static int qcom_swrm_get_alert_slave_dev_num(struct qcom_swrm_ctrl *ctrl) { u32 val, status; int dev_num; ctrl->reg_read(ctrl, SWRM_MCP_SLV_STATUS, &val); for (dev_num = 1; dev_num <= SDW_MAX_DEVICES; dev_num++) { status = (val >> (dev_num * SWRM_MCP_SLV_STATUS_SZ)); if ((status & SWRM_MCP_SLV_STATUS_MASK) == SDW_SLAVE_ALERT) { ctrl->status[dev_num] = status; return dev_num; } } return -EINVAL; } static void qcom_swrm_get_device_status(struct qcom_swrm_ctrl *ctrl) { u32 val; int i; ctrl->reg_read(ctrl, SWRM_MCP_SLV_STATUS, &val); ctrl->slave_status = val; for (i = 1; i <= SDW_MAX_DEVICES; i++) { u32 s; s = (val >> (i * 2)); s &= SWRM_MCP_SLV_STATUS_MASK; ctrl->status[i] = s; } } static void qcom_swrm_set_slave_dev_num(struct sdw_bus *bus, struct sdw_slave *slave, int devnum) { struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); u32 status; ctrl->reg_read(ctrl, SWRM_MCP_SLV_STATUS, &status); status = (status >> (devnum * SWRM_MCP_SLV_STATUS_SZ)); status &= SWRM_MCP_SLV_STATUS_MASK; if (status == SDW_SLAVE_ATTACHED) { if (slave) slave->dev_num = devnum; mutex_lock(&bus->bus_lock); set_bit(devnum, bus->assigned); mutex_unlock(&bus->bus_lock); } } static int qcom_swrm_enumerate(struct sdw_bus *bus) { struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); struct sdw_slave *slave, *_s; struct sdw_slave_id id; u32 val1, val2; bool found; u64 addr; int i; char *buf1 = (char *)&val1, *buf2 = (char *)&val2; for (i = 1; i <= SDW_MAX_DEVICES; i++) { /* do not continue if the status is Not Present */ if (!ctrl->status[i]) continue; /*SCP_Devid5 - Devid 4*/ ctrl->reg_read(ctrl, SWRM_ENUMERATOR_SLAVE_DEV_ID_1(i), &val1); /*SCP_Devid3 - DevId 2 Devid 1 Devid 0*/ ctrl->reg_read(ctrl, SWRM_ENUMERATOR_SLAVE_DEV_ID_2(i), &val2); if (!val1 && !val2) break; addr = buf2[1] | (buf2[0] << 8) | (buf1[3] << 16) | ((u64)buf1[2] << 24) | ((u64)buf1[1] << 32) | ((u64)buf1[0] << 40); sdw_extract_slave_id(bus, addr, &id); found = false; /* Now compare with entries */ list_for_each_entry_safe(slave, _s, &bus->slaves, node) { if (sdw_compare_devid(slave, id) == 0) { qcom_swrm_set_slave_dev_num(bus, slave, i); found = true; break; } } if (!found) { qcom_swrm_set_slave_dev_num(bus, NULL, i); sdw_slave_add(bus, &id, NULL); } } complete(&ctrl->enumeration); return 0; } static irqreturn_t qcom_swrm_wake_irq_handler(int irq, void *dev_id) { struct qcom_swrm_ctrl *swrm = dev_id; int ret; ret = pm_runtime_resume_and_get(swrm->dev); if (ret < 0 && ret != -EACCES) { dev_err_ratelimited(swrm->dev, "pm_runtime_resume_and_get failed in %s, ret %d\n", __func__, ret); return ret; } if (swrm->wake_irq > 0) { if (!irqd_irq_disabled(irq_get_irq_data(swrm->wake_irq))) disable_irq_nosync(swrm->wake_irq); } pm_runtime_mark_last_busy(swrm->dev); pm_runtime_put_autosuspend(swrm->dev); return IRQ_HANDLED; } static irqreturn_t qcom_swrm_irq_handler(int irq, void *dev_id) { struct qcom_swrm_ctrl *swrm = dev_id; u32 value, intr_sts, intr_sts_masked, slave_status; u32 i; int devnum; int ret = IRQ_HANDLED; clk_prepare_enable(swrm->hclk); swrm->reg_read(swrm, SWRM_INTERRUPT_STATUS, &intr_sts); intr_sts_masked = intr_sts & swrm->intr_mask; do { for (i = 0; i < SWRM_INTERRUPT_MAX; i++) { value = intr_sts_masked & BIT(i); if (!value) continue; switch (value) { case SWRM_INTERRUPT_STATUS_SLAVE_PEND_IRQ: devnum = qcom_swrm_get_alert_slave_dev_num(swrm); if (devnum < 0) { dev_err_ratelimited(swrm->dev, "no slave alert found.spurious interrupt\n"); } else { sdw_handle_slave_status(&swrm->bus, swrm->status); } break; case SWRM_INTERRUPT_STATUS_NEW_SLAVE_ATTACHED: case SWRM_INTERRUPT_STATUS_CHANGE_ENUM_SLAVE_STATUS: dev_dbg_ratelimited(swrm->dev, "SWR new slave attached\n"); swrm->reg_read(swrm, SWRM_MCP_SLV_STATUS, &slave_status); if (swrm->slave_status == slave_status) { dev_dbg(swrm->dev, "Slave status not changed %x\n", slave_status); } else { qcom_swrm_get_device_status(swrm); qcom_swrm_enumerate(&swrm->bus); sdw_handle_slave_status(&swrm->bus, swrm->status); } break; case SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET: dev_err_ratelimited(swrm->dev, "%s: SWR bus clsh detected\n", __func__); swrm->intr_mask &= ~SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET; swrm->reg_write(swrm, SWRM_INTERRUPT_CPU_EN, swrm->intr_mask); break; case SWRM_INTERRUPT_STATUS_RD_FIFO_OVERFLOW: swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value); dev_err_ratelimited(swrm->dev, "%s: SWR read FIFO overflow fifo status 0x%x\n", __func__, value); break; case SWRM_INTERRUPT_STATUS_RD_FIFO_UNDERFLOW: swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value); dev_err_ratelimited(swrm->dev, "%s: SWR read FIFO underflow fifo status 0x%x\n", __func__, value); break; case SWRM_INTERRUPT_STATUS_WR_CMD_FIFO_OVERFLOW: swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value); dev_err(swrm->dev, "%s: SWR write FIFO overflow fifo status %x\n", __func__, value); swrm->reg_write(swrm, SWRM_CMD_FIFO_CMD, 0x1); break; case SWRM_INTERRUPT_STATUS_CMD_ERROR: swrm->reg_read(swrm, SWRM_CMD_FIFO_STATUS, &value); dev_err_ratelimited(swrm->dev, "%s: SWR CMD error, fifo status 0x%x, flushing fifo\n", __func__, value); swrm->reg_write(swrm, SWRM_CMD_FIFO_CMD, 0x1); break; case SWRM_INTERRUPT_STATUS_DOUT_PORT_COLLISION: dev_err_ratelimited(swrm->dev, "%s: SWR Port collision detected\n", __func__); swrm->intr_mask &= ~SWRM_INTERRUPT_STATUS_DOUT_PORT_COLLISION; swrm->reg_write(swrm, SWRM_INTERRUPT_CPU_EN, swrm->intr_mask); break; case SWRM_INTERRUPT_STATUS_READ_EN_RD_VALID_MISMATCH: dev_err_ratelimited(swrm->dev, "%s: SWR read enable valid mismatch\n", __func__); swrm->intr_mask &= ~SWRM_INTERRUPT_STATUS_READ_EN_RD_VALID_MISMATCH; swrm->reg_write(swrm, SWRM_INTERRUPT_CPU_EN, swrm->intr_mask); break; case SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED: complete(&swrm->broadcast); break; case SWRM_INTERRUPT_STATUS_BUS_RESET_FINISHED_V2: break; case SWRM_INTERRUPT_STATUS_CLK_STOP_FINISHED_V2: break; case SWRM_INTERRUPT_STATUS_EXT_CLK_STOP_WAKEUP: break; default: dev_err_ratelimited(swrm->dev, "%s: SWR unknown interrupt value: %d\n", __func__, value); ret = IRQ_NONE; break; } } swrm->reg_write(swrm, SWRM_INTERRUPT_CLEAR, intr_sts); swrm->reg_read(swrm, SWRM_INTERRUPT_STATUS, &intr_sts); intr_sts_masked = intr_sts & swrm->intr_mask; } while (intr_sts_masked); clk_disable_unprepare(swrm->hclk); return ret; } static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl) { u32 val; /* Clear Rows and Cols */ val = FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, ctrl->rows_index); val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, ctrl->cols_index); reset_control_reset(ctrl->audio_cgcr); ctrl->reg_write(ctrl, SWRM_MCP_FRAME_CTRL_BANK_ADDR(0), val); /* Enable Auto enumeration */ ctrl->reg_write(ctrl, SWRM_ENUMERATOR_CFG_ADDR, 1); ctrl->intr_mask = SWRM_INTERRUPT_STATUS_RMSK; /* Mask soundwire interrupts */ ctrl->reg_write(ctrl, SWRM_INTERRUPT_MASK_ADDR, SWRM_INTERRUPT_STATUS_RMSK); /* Configure No pings */ ctrl->reg_read(ctrl, SWRM_MCP_CFG_ADDR, &val); u32p_replace_bits(&val, SWRM_DEF_CMD_NO_PINGS, SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK); ctrl->reg_write(ctrl, SWRM_MCP_CFG_ADDR, val); if (ctrl->version >= 0x01070000) { ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU); ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU); } else { ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START); } /* Configure number of retries of a read/write cmd */ if (ctrl->version > 0x01050001) { /* Only for versions >= 1.5.1 */ ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR, SWRM_RD_WR_CMD_RETRIES | SWRM_CONTINUE_EXEC_ON_CMD_IGNORE); } else { ctrl->reg_write(ctrl, SWRM_CMD_FIFO_CFG_ADDR, SWRM_RD_WR_CMD_RETRIES); } /* Set IRQ to PULSE */ ctrl->reg_write(ctrl, SWRM_COMP_CFG_ADDR, SWRM_COMP_CFG_IRQ_LEVEL_OR_PULSE_MSK | SWRM_COMP_CFG_ENABLE_MSK); /* enable CPU IRQs */ if (ctrl->mmio) { ctrl->reg_write(ctrl, SWRM_INTERRUPT_CPU_EN, SWRM_INTERRUPT_STATUS_RMSK); } ctrl->slave_status = 0; ctrl->reg_read(ctrl, SWRM_COMP_PARAMS, &val); ctrl->rd_fifo_depth = FIELD_GET(SWRM_COMP_PARAMS_RD_FIFO_DEPTH, val); ctrl->wr_fifo_depth = FIELD_GET(SWRM_COMP_PARAMS_WR_FIFO_DEPTH, val); return 0; } static enum sdw_command_response qcom_swrm_xfer_msg(struct sdw_bus *bus, struct sdw_msg *msg) { struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); int ret, i, len; if (msg->flags == SDW_MSG_FLAG_READ) { for (i = 0; i < msg->len;) { if ((msg->len - i) < QCOM_SWRM_MAX_RD_LEN) len = msg->len - i; else len = QCOM_SWRM_MAX_RD_LEN; ret = qcom_swrm_cmd_fifo_rd_cmd(ctrl, msg->dev_num, msg->addr + i, len, &msg->buf[i]); if (ret) return ret; i = i + len; } } else if (msg->flags == SDW_MSG_FLAG_WRITE) { for (i = 0; i < msg->len; i++) { ret = qcom_swrm_cmd_fifo_wr_cmd(ctrl, msg->buf[i], msg->dev_num, msg->addr + i); if (ret) return SDW_CMD_IGNORED; } } return SDW_CMD_OK; } static int qcom_swrm_pre_bank_switch(struct sdw_bus *bus) { u32 reg = SWRM_MCP_FRAME_CTRL_BANK_ADDR(bus->params.next_bank); struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); u32 val; ctrl->reg_read(ctrl, reg, &val); u32p_replace_bits(&val, ctrl->cols_index, SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK); u32p_replace_bits(&val, ctrl->rows_index, SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK); return ctrl->reg_write(ctrl, reg, val); } static int qcom_swrm_port_params(struct sdw_bus *bus, struct sdw_port_params *p_params, unsigned int bank) { struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); return ctrl->reg_write(ctrl, SWRM_DP_BLOCK_CTRL_1(p_params->num), p_params->bps - 1); } static int qcom_swrm_transport_params(struct sdw_bus *bus, struct sdw_transport_params *params, enum sdw_reg_bank bank) { struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); struct qcom_swrm_port_config *pcfg; u32 value; int reg = SWRM_DP_PORT_CTRL_BANK((params->port_num), bank); int ret; pcfg = &ctrl->pconfig[params->port_num]; value = pcfg->off1 << SWRM_DP_PORT_CTRL_OFFSET1_SHFT; value |= pcfg->off2 << SWRM_DP_PORT_CTRL_OFFSET2_SHFT; value |= pcfg->si; ret = ctrl->reg_write(ctrl, reg, value); if (ret) goto err; if (pcfg->lane_control != SWR_INVALID_PARAM) { reg = SWRM_DP_PORT_CTRL_2_BANK(params->port_num, bank); value = pcfg->lane_control; ret = ctrl->reg_write(ctrl, reg, value); if (ret) goto err; } if (pcfg->blk_group_count != SWR_INVALID_PARAM) { reg = SWRM_DP_BLOCK_CTRL2_BANK(params->port_num, bank); value = pcfg->blk_group_count; ret = ctrl->reg_write(ctrl, reg, value); if (ret) goto err; } if (pcfg->hstart != SWR_INVALID_PARAM && pcfg->hstop != SWR_INVALID_PARAM) { reg = SWRM_DP_PORT_HCTRL_BANK(params->port_num, bank); value = (pcfg->hstop << 4) | pcfg->hstart; ret = ctrl->reg_write(ctrl, reg, value); } else { reg = SWRM_DP_PORT_HCTRL_BANK(params->port_num, bank); value = (SWR_HSTOP_MAX_VAL << 4) | SWR_HSTART_MIN_VAL; ret = ctrl->reg_write(ctrl, reg, value); } if (ret) goto err; if (pcfg->bp_mode != SWR_INVALID_PARAM) { reg = SWRM_DP_BLOCK_CTRL3_BANK(params->port_num, bank); ret = ctrl->reg_write(ctrl, reg, pcfg->bp_mode); } err: return ret; } static int qcom_swrm_port_enable(struct sdw_bus *bus, struct sdw_enable_ch *enable_ch, unsigned int bank) { u32 reg = SWRM_DP_PORT_CTRL_BANK(enable_ch->port_num, bank); struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); u32 val; ctrl->reg_read(ctrl, reg, &val); if (enable_ch->enable) val |= (enable_ch->ch_mask << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT); else val &= ~(0xff << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT); return ctrl->reg_write(ctrl, reg, val); } static const struct sdw_master_port_ops qcom_swrm_port_ops = { .dpn_set_port_params = qcom_swrm_port_params, .dpn_set_port_transport_params = qcom_swrm_transport_params, .dpn_port_enable_ch = qcom_swrm_port_enable, }; static const struct sdw_master_ops qcom_swrm_ops = { .xfer_msg = qcom_swrm_xfer_msg, .pre_bank_switch = qcom_swrm_pre_bank_switch, }; static int qcom_swrm_compute_params(struct sdw_bus *bus) { struct qcom_swrm_ctrl *ctrl = to_qcom_sdw(bus); struct sdw_master_runtime *m_rt; struct sdw_slave_runtime *s_rt; struct sdw_port_runtime *p_rt; struct qcom_swrm_port_config *pcfg; struct sdw_slave *slave; unsigned int m_port; int i = 1; 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]; p_rt->transport_params.port_num = p_rt->num; if (pcfg->word_length != SWR_INVALID_PARAM) { sdw_fill_port_params(&p_rt->port_params, p_rt->num, pcfg->word_length + 1, SDW_PORT_FLOW_MODE_ISOCH, SDW_PORT_DATA_MODE_NORMAL); } } list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) { slave = s_rt->slave; list_for_each_entry(p_rt, &s_rt->port_list, port_node) { m_port = slave->m_port_map[p_rt->num]; /* port config starts at offset 0 so -1 from actual port number */ if (m_port) pcfg = &ctrl->pconfig[m_port]; else 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; p_rt->transport_params.blk_pkg_mode = pcfg->bp_mode; p_rt->transport_params.blk_grp_ctrl = pcfg->blk_group_count; p_rt->transport_params.hstart = pcfg->hstart; p_rt->transport_params.hstop = pcfg->hstop; p_rt->transport_params.lane_ctrl = pcfg->lane_control; if (pcfg->word_length != SWR_INVALID_PARAM) { sdw_fill_port_params(&p_rt->port_params, p_rt->num, pcfg->word_length + 1, SDW_PORT_FLOW_MODE_ISOCH, SDW_PORT_DATA_MODE_NORMAL); } i++; } } } return 0; } static u32 qcom_swrm_freq_tbl[MAX_FREQ_NUM] = { DEFAULT_CLK_FREQ, }; 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, 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; struct sdw_slave *slave; unsigned long *port_mask; int i, maxport, pn, nports = 0, ret = 0; unsigned int m_port; 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) { slave = s_rt->slave; list_for_each_entry(p_rt, &s_rt->port_list, port_node) { m_port = slave->m_port_map[p_rt->num]; /* Port numbers start from 1 - 14*/ if (m_port) pn = m_port; else pn = find_first_zero_bit(port_mask, maxport); if (pn > maxport) { dev_err(ctrl->dev, "All ports busy\n"); ret = -EBUSY; goto err; } set_bit(pn, port_mask); pconfig[nports].num = pn; 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, 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; ret = pm_runtime_resume_and_get(ctrl->dev); if (ret < 0 && ret != -EACCES) { dev_err_ratelimited(ctrl->dev, "pm_runtime_resume_and_get failed in %s, ret %d\n", __func__, ret); return ret; } 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_stream(codec_dai, sruntime, substream->stream); if (ret < 0 && ret != -ENOTSUPP) { dev_err(dai->dev, "Failed to set sdw stream on %s\n", 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; pm_runtime_mark_last_busy(ctrl->dev); pm_runtime_put_autosuspend(ctrl->dev); } 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_stream = qcom_swrm_set_sdw_stream, .get_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]; u8 bp_mode[QCOM_SDW_MAX_PORTS] = { 0, }; u8 hstart[QCOM_SDW_MAX_PORTS]; u8 hstop[QCOM_SDW_MAX_PORTS]; u8 word_length[QCOM_SDW_MAX_PORTS]; u8 blk_group_count[QCOM_SDW_MAX_PORTS]; u8 lane_control[QCOM_SDW_MAX_PORTS]; int i, ret, nports, val; ctrl->reg_read(ctrl, SWRM_COMP_PARAMS, &val); ctrl->num_dout_ports = FIELD_GET(SWRM_COMP_PARAMS_DOUT_PORTS_MASK, val); ctrl->num_din_ports = FIELD_GET(SWRM_COMP_PARAMS_DIN_PORTS_MASK, val); 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; /* Valid port numbers are from 1-14, so mask out port 0 explicitly */ set_bit(0, &ctrl->dout_port_mask); set_bit(0, &ctrl->din_port_mask); 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; ret = of_property_read_u8_array(np, "qcom,ports-block-pack-mode", bp_mode, nports); if (ret) { if (ctrl->version <= 0x01030000) memset(bp_mode, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS); else return ret; } memset(hstart, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS); of_property_read_u8_array(np, "qcom,ports-hstart", hstart, nports); memset(hstop, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS); of_property_read_u8_array(np, "qcom,ports-hstop", hstop, nports); memset(word_length, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS); of_property_read_u8_array(np, "qcom,ports-word-length", word_length, nports); memset(blk_group_count, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS); of_property_read_u8_array(np, "qcom,ports-block-group-count", blk_group_count, nports); memset(lane_control, SWR_INVALID_PARAM, QCOM_SDW_MAX_PORTS); of_property_read_u8_array(np, "qcom,ports-lane-control", lane_control, nports); for (i = 0; i < nports; i++) { /* Valid port number range is from 1-14 */ ctrl->pconfig[i + 1].si = si[i]; ctrl->pconfig[i + 1].off1 = off1[i]; ctrl->pconfig[i + 1].off2 = off2[i]; ctrl->pconfig[i + 1].bp_mode = bp_mode[i]; ctrl->pconfig[i + 1].hstart = hstart[i]; ctrl->pconfig[i + 1].hstop = hstop[i]; ctrl->pconfig[i + 1].word_length = word_length[i]; ctrl->pconfig[i + 1].blk_group_count = blk_group_count[i]; ctrl->pconfig[i + 1].lane_control = lane_control[i]; } return 0; } #ifdef CONFIG_DEBUG_FS static int swrm_reg_show(struct seq_file *s_file, void *data) { struct qcom_swrm_ctrl *swrm = s_file->private; int reg, reg_val, ret; ret = pm_runtime_resume_and_get(swrm->dev); if (ret < 0 && ret != -EACCES) { dev_err_ratelimited(swrm->dev, "pm_runtime_resume_and_get failed in %s, ret %d\n", __func__, ret); return ret; } for (reg = 0; reg <= SWR_MSTR_MAX_REG_ADDR; reg += 4) { swrm->reg_read(swrm, reg, ®_val); seq_printf(s_file, "0x%.3x: 0x%.2x\n", reg, reg_val); } pm_runtime_mark_last_busy(swrm->dev); pm_runtime_put_autosuspend(swrm->dev); return 0; } DEFINE_SHOW_ATTRIBUTE(swrm_reg); #endif 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; const struct qcom_swrm_data *data; int ret; u32 val; ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); if (!ctrl) return -ENOMEM; data = of_device_get_match_data(dev); ctrl->rows_index = sdw_find_row_index(data->default_rows); ctrl->cols_index = sdw_find_col_index(data->default_cols); #if IS_REACHABLE(CONFIG_SLIMBUS) if (dev->parent->bus == &slimbus_bus) { #else if (false) { #endif ctrl->reg_read = qcom_swrm_ahb_reg_read; ctrl->reg_write = qcom_swrm_ahb_reg_write; ctrl->regmap = dev_get_regmap(dev->parent, NULL); if (!ctrl->regmap) return -EINVAL; } else { ctrl->reg_read = qcom_swrm_cpu_reg_read; ctrl->reg_write = qcom_swrm_cpu_reg_write; ctrl->mmio = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ctrl->mmio)) return PTR_ERR(ctrl->mmio); } if (data->sw_clk_gate_required) { ctrl->audio_cgcr = devm_reset_control_get_optional_exclusive(dev, "swr_audio_cgcr"); if (IS_ERR(ctrl->audio_cgcr)) { dev_err(dev, "Failed to get cgcr reset ctrl required for SW gating\n"); ret = PTR_ERR(ctrl->audio_cgcr); goto err_init; } } 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); mutex_init(&ctrl->port_lock); init_completion(&ctrl->broadcast); init_completion(&ctrl->enumeration); ctrl->bus.ops = &qcom_swrm_ops; ctrl->bus.port_ops = &qcom_swrm_port_ops; ctrl->bus.compute_params = &qcom_swrm_compute_params; ctrl->bus.clk_stop_timeout = 300; 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 = data->default_cols; params->row = data->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 = data->default_cols; prop->default_row = data->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; } ctrl->wake_irq = of_irq_get(dev->of_node, 1); if (ctrl->wake_irq > 0) { ret = devm_request_threaded_irq(dev, ctrl->wake_irq, NULL, qcom_swrm_wake_irq_handler, IRQF_TRIGGER_HIGH | IRQF_ONESHOT, "swr_wake_irq", ctrl); if (ret) { dev_err(dev, "Failed to request soundwire wake irq\n"); goto err_init; } } 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); wait_for_completion_timeout(&ctrl->enumeration, msecs_to_jiffies(TIMEOUT_MS)); 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); pm_runtime_set_autosuspend_delay(dev, 3000); pm_runtime_use_autosuspend(dev); pm_runtime_mark_last_busy(dev); pm_runtime_set_active(dev); pm_runtime_enable(dev); /* Clk stop is not supported on WSA Soundwire masters */ if (ctrl->version <= 0x01030000) { ctrl->clock_stop_not_supported = true; } else { ctrl->reg_read(ctrl, SWRM_COMP_MASTER_ID, &val); if (val == MASTER_ID_WSA) ctrl->clock_stop_not_supported = true; } #ifdef CONFIG_DEBUG_FS ctrl->debugfs = debugfs_create_dir("qualcomm-sdw", ctrl->bus.debugfs); debugfs_create_file("qualcomm-registers", 0400, ctrl->debugfs, ctrl, &swrm_reg_fops); #endif 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 bool swrm_wait_for_frame_gen_enabled(struct qcom_swrm_ctrl *swrm) { int retry = SWRM_LINK_STATUS_RETRY_CNT; int comp_sts; do { swrm->reg_read(swrm, SWRM_COMP_STATUS, &comp_sts); if (comp_sts & SWRM_FRM_GEN_ENABLED) return true; usleep_range(500, 510); } while (retry--); dev_err(swrm->dev, "%s: link status not %s\n", __func__, comp_sts & SWRM_FRM_GEN_ENABLED ? "connected" : "disconnected"); return false; } static int __maybe_unused swrm_runtime_resume(struct device *dev) { struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dev); int ret; if (ctrl->wake_irq > 0) { if (!irqd_irq_disabled(irq_get_irq_data(ctrl->wake_irq))) disable_irq_nosync(ctrl->wake_irq); } clk_prepare_enable(ctrl->hclk); if (ctrl->clock_stop_not_supported) { reinit_completion(&ctrl->enumeration); ctrl->reg_write(ctrl, SWRM_COMP_SW_RESET, 0x01); usleep_range(100, 105); qcom_swrm_init(ctrl); usleep_range(100, 105); if (!swrm_wait_for_frame_gen_enabled(ctrl)) dev_err(ctrl->dev, "link failed to connect\n"); /* wait for hw enumeration to complete */ wait_for_completion_timeout(&ctrl->enumeration, msecs_to_jiffies(TIMEOUT_MS)); qcom_swrm_get_device_status(ctrl); sdw_handle_slave_status(&ctrl->bus, ctrl->status); } else { reset_control_reset(ctrl->audio_cgcr); if (ctrl->version >= 0x01070000) { ctrl->reg_write(ctrl, SWRM_LINK_MANAGER_EE, SWRM_EE_CPU); ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START << SWRM_EE_CPU); } else { ctrl->reg_write(ctrl, SWRM_MCP_BUS_CTRL, SWRM_MCP_BUS_CLK_START); } ctrl->reg_write(ctrl, SWRM_INTERRUPT_CLEAR, SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET); ctrl->intr_mask |= SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET; ctrl->reg_write(ctrl, SWRM_INTERRUPT_MASK_ADDR, ctrl->intr_mask); ctrl->reg_write(ctrl, SWRM_INTERRUPT_CPU_EN, ctrl->intr_mask); usleep_range(100, 105); if (!swrm_wait_for_frame_gen_enabled(ctrl)) dev_err(ctrl->dev, "link failed to connect\n"); ret = sdw_bus_exit_clk_stop(&ctrl->bus); if (ret < 0) dev_err(ctrl->dev, "bus failed to exit clock stop %d\n", ret); } return 0; } static int __maybe_unused swrm_runtime_suspend(struct device *dev) { struct qcom_swrm_ctrl *ctrl = dev_get_drvdata(dev); int ret; if (!ctrl->clock_stop_not_supported) { /* Mask bus clash interrupt */ ctrl->intr_mask &= ~SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET; ctrl->reg_write(ctrl, SWRM_INTERRUPT_MASK_ADDR, ctrl->intr_mask); ctrl->reg_write(ctrl, SWRM_INTERRUPT_CPU_EN, ctrl->intr_mask); /* Prepare slaves for clock stop */ ret = sdw_bus_prep_clk_stop(&ctrl->bus); if (ret < 0 && ret != -ENODATA) { dev_err(dev, "prepare clock stop failed %d", ret); return ret; } ret = sdw_bus_clk_stop(&ctrl->bus); if (ret < 0 && ret != -ENODATA) { dev_err(dev, "bus clock stop failed %d", ret); return ret; } } clk_disable_unprepare(ctrl->hclk); usleep_range(300, 305); if (ctrl->wake_irq > 0) { if (irqd_irq_disabled(irq_get_irq_data(ctrl->wake_irq))) enable_irq(ctrl->wake_irq); } return 0; } static const struct dev_pm_ops swrm_dev_pm_ops = { SET_RUNTIME_PM_OPS(swrm_runtime_suspend, swrm_runtime_resume, NULL) }; static const struct of_device_id qcom_swrm_of_match[] = { { .compatible = "qcom,soundwire-v1.3.0", .data = &swrm_v1_3_data }, { .compatible = "qcom,soundwire-v1.5.1", .data = &swrm_v1_5_data }, { .compatible = "qcom,soundwire-v1.6.0", .data = &swrm_v1_6_data }, { .compatible = "qcom,soundwire-v1.7.0", .data = &swrm_v1_5_data }, {/* 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, .pm = &swrm_dev_pm_ops, } }; module_platform_driver(qcom_swrm_driver); MODULE_DESCRIPTION("Qualcomm soundwire driver"); MODULE_LICENSE("GPL v2");
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