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- // SPDX-License-Identifier: GPL-2.0-only
- /* Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
- */
- #include <linux/irq.h>
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/io.h>
- #include <linux/interrupt.h>
- #include <linux/platform_device.h>
- #include <linux/delay.h>
- #include <linux/kthread.h>
- #include <linux/clk.h>
- #include <linux/pm_runtime.h>
- #include <linux/of.h>
- #include <linux/debugfs.h>
- #include <linux/uaccess.h>
- #include <soc/soundwire.h>
- #include <soc/swr-wcd.h>
- #include <dsp/msm-audio-event-notify.h>
- #include "swrm_registers.h"
- #include "swr-wcd-ctrl.h"
- #define SWR_BROADCAST_CMD_ID 0x0F
- #define SWR_AUTO_SUSPEND_DELAY 3 /* delay in sec */
- #define SWR_DEV_ID_MASK 0xFFFFFFFF
- #define SWR_REG_VAL_PACK(data, dev, id, reg) \
- ((reg) | ((id) << 16) | ((dev) << 20) | ((data) << 24))
- /* pm runtime auto suspend timer in msecs */
- static int auto_suspend_timer = SWR_AUTO_SUSPEND_DELAY * 1000;
- module_param(auto_suspend_timer, int, 0664);
- MODULE_PARM_DESC(auto_suspend_timer, "timer for auto suspend");
- static u8 mstr_ports[] = {100, 101, 102, 103, 104, 105, 106, 107};
- static u8 mstr_port_type[] = {SWR_DAC_PORT, SWR_COMP_PORT, SWR_BOOST_PORT,
- SWR_DAC_PORT, SWR_COMP_PORT, SWR_BOOST_PORT,
- SWR_VISENSE_PORT, SWR_VISENSE_PORT};
- struct usecase uc[] = {
- {0, 0, 0}, /* UC0: no ports */
- {1, 1, 2400}, /* UC1: Spkr */
- {1, 4, 600}, /* UC2: Compander */
- {1, 2, 300}, /* UC3: Smart Boost */
- {1, 2, 1200}, /* UC4: VI Sense */
- {4, 9, 4500}, /* UC5: Spkr + Comp + SB + VI */
- {8, 18, 9000}, /* UC6: 2*(Spkr + Comp + SB + VI) */
- {2, 2, 4800}, /* UC7: 2*Spkr */
- {2, 5, 3000}, /* UC8: Spkr + Comp */
- {4, 10, 6000}, /* UC9: 2*(Spkr + Comp) */
- {3, 7, 3300}, /* UC10: Spkr + Comp + SB */
- {6, 14, 6600}, /* UC11: 2*(Spkr + Comp + SB) */
- {2, 3, 2700}, /* UC12: Spkr + SB */
- {4, 6, 5400}, /* UC13: 2*(Spkr + SB) */
- {3, 5, 3900}, /* UC14: Spkr + SB + VI */
- {6, 10, 7800}, /* UC15: 2*(Spkr + SB + VI) */
- {2, 3, 3600}, /* UC16: Spkr + VI */
- {4, 6, 7200}, /* UC17: 2*(Spkr + VI) */
- {3, 7, 4200}, /* UC18: Spkr + Comp + VI */
- {6, 14, 8400}, /* UC19: 2*(Spkr + Comp + VI) */
- };
- #define MAX_USECASE ARRAY_SIZE(uc)
- struct port_params pp[MAX_USECASE][SWR_MSTR_PORT_LEN] = {
- /* UC 0 */
- {
- {0, 0, 0},
- },
- /* UC 1 */
- {
- {7, 1, 0},
- },
- /* UC 2 */
- {
- {31, 2, 0},
- },
- /* UC 3 */
- {
- {63, 12, 31},
- },
- /* UC 4 */
- {
- {15, 7, 0},
- },
- /* UC 5 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {63, 12, 31},
- {15, 7, 0},
- },
- /* UC 6 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {63, 12, 31},
- {15, 7, 0},
- {7, 6, 0},
- {31, 18, 0},
- {63, 13, 31},
- {15, 10, 0},
- },
- /* UC 7 */
- {
- {7, 1, 0},
- {7, 6, 0},
- },
- /* UC 8 */
- {
- {7, 1, 0},
- {31, 2, 0},
- },
- /* UC 9 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {7, 6, 0},
- {31, 18, 0},
- },
- /* UC 10 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {63, 12, 31},
- },
- /* UC 11 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {63, 12, 31},
- {7, 6, 0},
- {31, 18, 0},
- {63, 13, 31},
- },
- /* UC 12 */
- {
- {7, 1, 0},
- {63, 12, 31},
- },
- /* UC 13 */
- {
- {7, 1, 0},
- {63, 12, 31},
- {7, 6, 0},
- {63, 13, 31},
- },
- /* UC 14 */
- {
- {7, 1, 0},
- {63, 12, 31},
- {15, 7, 0},
- },
- /* UC 15 */
- {
- {7, 1, 0},
- {63, 12, 31},
- {15, 7, 0},
- {7, 6, 0},
- {63, 13, 31},
- {15, 10, 0},
- },
- /* UC 16 */
- {
- {7, 1, 0},
- {15, 7, 0},
- },
- /* UC 17 */
- {
- {7, 1, 0},
- {15, 7, 0},
- {7, 6, 0},
- {15, 10, 0},
- },
- /* UC 18 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {15, 7, 0},
- },
- /* UC 19 */
- {
- {7, 1, 0},
- {31, 2, 0},
- {15, 7, 0},
- {7, 6, 0},
- {31, 18, 0},
- {15, 10, 0},
- },
- };
- enum {
- SWR_NOT_PRESENT, /* Device is detached/not present on the bus */
- SWR_ATTACHED_OK, /* Device is attached */
- SWR_ALERT, /* Device alters master for any interrupts */
- SWR_RESERVED, /* Reserved */
- };
- #define SWRM_MAX_PORT_REG 40
- #define SWRM_MAX_INIT_REG 8
- #define SWR_MSTR_MAX_REG_ADDR 0x1740
- #define SWR_MSTR_START_REG_ADDR 0x00
- #define SWR_MSTR_MAX_BUF_LEN 32
- #define BYTES_PER_LINE 12
- #define SWR_MSTR_RD_BUF_LEN 8
- #define SWR_MSTR_WR_BUF_LEN 32
- static void swrm_copy_data_port_config(struct swr_master *master,
- u8 inactive_bank);
- static struct swr_mstr_ctrl *dbgswrm;
- static struct dentry *debugfs_swrm_dent;
- static struct dentry *debugfs_peek;
- static struct dentry *debugfs_poke;
- static struct dentry *debugfs_reg_dump;
- static unsigned int read_data;
- static bool swrm_is_msm_variant(int val)
- {
- return (val == SWRM_VERSION_1_3);
- }
- static int swrm_debug_open(struct inode *inode, struct file *file)
- {
- file->private_data = inode->i_private;
- return 0;
- }
- static int get_parameters(char *buf, u32 *param1, int num_of_par)
- {
- char *token;
- int base, cnt;
- token = strsep(&buf, " ");
- for (cnt = 0; cnt < num_of_par; cnt++) {
- if (token) {
- if ((token[1] == 'x') || (token[1] == 'X'))
- base = 16;
- else
- base = 10;
- if (kstrtou32(token, base, ¶m1[cnt]) != 0)
- return -EINVAL;
- token = strsep(&buf, " ");
- } else
- return -EINVAL;
- }
- return 0;
- }
- static ssize_t swrm_reg_show(char __user *ubuf, size_t count,
- loff_t *ppos)
- {
- int i, reg_val, len;
- ssize_t total = 0;
- char tmp_buf[SWR_MSTR_MAX_BUF_LEN];
- if (!ubuf || !ppos)
- return 0;
- for (i = (((int) *ppos / BYTES_PER_LINE) + SWR_MSTR_START_REG_ADDR);
- i <= SWR_MSTR_MAX_REG_ADDR; i += 4) {
- reg_val = dbgswrm->read(dbgswrm->handle, i);
- len = snprintf(tmp_buf, 25, "0x%.3x: 0x%.2x\n", i, reg_val);
- if (len < 0) {
- pr_err("%s: fail to fill the buffer\n", __func__);
- total = -EFAULT;
- goto copy_err;
- }
- if ((total + len) >= count - 1)
- break;
- if (copy_to_user((ubuf + total), tmp_buf, len)) {
- pr_err("%s: fail to copy reg dump\n", __func__);
- total = -EFAULT;
- goto copy_err;
- }
- *ppos += len;
- total += len;
- }
- copy_err:
- return total;
- }
- static ssize_t swrm_debug_read(struct file *file, char __user *ubuf,
- size_t count, loff_t *ppos)
- {
- char lbuf[SWR_MSTR_RD_BUF_LEN];
- char *access_str;
- ssize_t ret_cnt;
- if (!count || !file || !ppos || !ubuf)
- return -EINVAL;
- access_str = file->private_data;
- if (*ppos < 0)
- return -EINVAL;
- if (!strcmp(access_str, "swrm_peek")) {
- snprintf(lbuf, sizeof(lbuf), "0x%x\n", read_data);
- ret_cnt = simple_read_from_buffer(ubuf, count, ppos, lbuf,
- strnlen(lbuf, 7));
- } else if (!strcmp(access_str, "swrm_reg_dump")) {
- ret_cnt = swrm_reg_show(ubuf, count, ppos);
- } else {
- pr_err("%s: %s not permitted to read\n", __func__, access_str);
- ret_cnt = -EPERM;
- }
- return ret_cnt;
- }
- static ssize_t swrm_debug_write(struct file *filp,
- const char __user *ubuf, size_t cnt, loff_t *ppos)
- {
- char lbuf[SWR_MSTR_WR_BUF_LEN];
- int rc;
- u32 param[5];
- char *access_str;
- if (!filp || !ppos || !ubuf)
- return -EINVAL;
- access_str = filp->private_data;
- if (cnt > sizeof(lbuf) - 1)
- return -EINVAL;
- rc = copy_from_user(lbuf, ubuf, cnt);
- if (rc)
- return -EFAULT;
- lbuf[cnt] = '\0';
- if (!strcmp(access_str, "swrm_poke")) {
- /* write */
- rc = get_parameters(lbuf, param, 2);
- if ((param[0] <= SWR_MSTR_MAX_REG_ADDR) &&
- (param[1] <= 0xFFFFFFFF) &&
- (rc == 0))
- rc = dbgswrm->write(dbgswrm->handle, param[0],
- param[1]);
- else
- rc = -EINVAL;
- } else if (!strcmp(access_str, "swrm_peek")) {
- /* read */
- rc = get_parameters(lbuf, param, 1);
- if ((param[0] <= SWR_MSTR_MAX_REG_ADDR) && (rc == 0))
- read_data = dbgswrm->read(dbgswrm->handle, param[0]);
- else
- rc = -EINVAL;
- }
- if (rc == 0)
- rc = cnt;
- else
- pr_err("%s: rc = %d\n", __func__, rc);
- return rc;
- }
- static const struct file_operations swrm_debug_ops = {
- .open = swrm_debug_open,
- .write = swrm_debug_write,
- .read = swrm_debug_read,
- };
- static int swrm_set_ch_map(struct swr_mstr_ctrl *swrm, void *data)
- {
- struct swr_mstr_port *pinfo = (struct swr_mstr_port *)data;
- swrm->mstr_port = kzalloc(sizeof(struct swr_mstr_port), GFP_KERNEL);
- if (swrm->mstr_port == NULL)
- return -ENOMEM;
- swrm->mstr_port->num_port = pinfo->num_port;
- swrm->mstr_port->port = kzalloc((pinfo->num_port * sizeof(u8)),
- GFP_KERNEL);
- if (!swrm->mstr_port->port) {
- kfree(swrm->mstr_port);
- swrm->mstr_port = NULL;
- return -ENOMEM;
- }
- memcpy(swrm->mstr_port->port, pinfo->port, pinfo->num_port);
- return 0;
- }
- static bool swrm_is_port_en(struct swr_master *mstr)
- {
- return !!(mstr->num_port);
- }
- static int swrm_clk_request(struct swr_mstr_ctrl *swrm, bool enable)
- {
- if (!swrm->clk || !swrm->handle)
- return -EINVAL;
- if (enable) {
- swrm->clk_ref_count++;
- if (swrm->clk_ref_count == 1) {
- swrm->clk(swrm->handle, true);
- swrm->state = SWR_MSTR_UP;
- }
- } else if (--swrm->clk_ref_count == 0) {
- swrm->clk(swrm->handle, false);
- swrm->state = SWR_MSTR_DOWN;
- } else if (swrm->clk_ref_count < 0) {
- pr_err("%s: swrm clk count mismatch\n", __func__);
- swrm->clk_ref_count = 0;
- }
- return 0;
- }
- static int swrm_get_port_config(struct swr_master *master)
- {
- u32 ch_rate = 0;
- u32 num_ch = 0;
- int i, uc_idx;
- u32 portcount = 0;
- for (i = 0; i < SWR_MSTR_PORT_LEN; i++) {
- if (master->port[i].port_en) {
- ch_rate += master->port[i].ch_rate;
- num_ch += master->port[i].num_ch;
- portcount++;
- }
- }
- for (i = 0; i < ARRAY_SIZE(uc); i++) {
- if ((uc[i].num_port == portcount) &&
- (uc[i].num_ch == num_ch) &&
- (uc[i].chrate == ch_rate)) {
- uc_idx = i;
- break;
- }
- }
- if (i >= ARRAY_SIZE(uc)) {
- dev_err(&master->dev,
- "%s: usecase port:%d, num_ch:%d, chrate:%d not found\n",
- __func__, master->num_port, num_ch, ch_rate);
- return -EINVAL;
- }
- for (i = 0; i < SWR_MSTR_PORT_LEN; i++) {
- if (master->port[i].port_en) {
- master->port[i].sinterval = pp[uc_idx][i].si;
- master->port[i].offset1 = pp[uc_idx][i].off1;
- master->port[i].offset2 = pp[uc_idx][i].off2;
- }
- }
- return 0;
- }
- static int swrm_get_master_port(u8 *mstr_port_id, u8 slv_port_id)
- {
- int i;
- for (i = 0; i < SWR_MSTR_PORT_LEN; i++) {
- if (mstr_ports[i] == slv_port_id) {
- *mstr_port_id = i;
- return 0;
- }
- }
- return -EINVAL;
- }
- 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 < 14)
- id += 1;
- else
- id = 0;
- *cmd_id = id;
- }
- val = SWR_REG_VAL_PACK(cmd_data, dev_addr, id, reg_addr);
- return val;
- }
- static int swrm_cmd_fifo_rd_cmd(struct swr_mstr_ctrl *swrm, int *cmd_data,
- u8 dev_addr, u8 cmd_id, u16 reg_addr,
- u32 len)
- {
- u32 val;
- int ret = 0;
- val = swrm_get_packed_reg_val(&swrm->rcmd_id, len, dev_addr, reg_addr);
- ret = swrm->write(swrm->handle, SWRM_CMD_FIFO_RD_CMD, val);
- if (ret < 0) {
- dev_err(swrm->dev, "%s: reg 0x%x write failed, err:%d\n",
- __func__, val, ret);
- goto err;
- }
- *cmd_data = swrm->read(swrm->handle, SWRM_CMD_FIFO_RD_FIFO_ADDR);
- dev_dbg(swrm->dev,
- "%s: reg: 0x%x, cmd_id: 0x%x, dev_id: 0x%x, cmd_data: 0x%x\n",
- __func__, reg_addr, cmd_id, dev_addr, *cmd_data);
- err:
- return ret;
- }
- static int swrm_cmd_fifo_wr_cmd(struct swr_mstr_ctrl *swrm, u8 cmd_data,
- u8 dev_addr, u8 cmd_id, u16 reg_addr)
- {
- u32 val;
- int ret = 0;
- if (!cmd_id)
- val = swrm_get_packed_reg_val(&swrm->wcmd_id, cmd_data,
- dev_addr, reg_addr);
- else
- val = swrm_get_packed_reg_val(&cmd_id, cmd_data,
- dev_addr, reg_addr);
- dev_dbg(swrm->dev,
- "%s: reg: 0x%x, cmd_id: 0x%x, dev_id: 0x%x, cmd_data: 0x%x\n",
- __func__, reg_addr, cmd_id, dev_addr, cmd_data);
- ret = swrm->write(swrm->handle, SWRM_CMD_FIFO_WR_CMD, val);
- if (ret < 0) {
- dev_err(swrm->dev, "%s: reg 0x%x write failed, err:%d\n",
- __func__, val, ret);
- goto err;
- }
- if (cmd_id == 0xF) {
- /*
- * sleep for 10ms for MSM soundwire variant to allow broadcast
- * command to complete.
- */
- if (swrm_is_msm_variant(swrm->version))
- usleep_range(10000, 10100);
- else
- wait_for_completion_timeout(&swrm->broadcast,
- (2 * HZ/10));
- }
- err:
- return ret;
- }
- static int swrm_read(struct swr_master *master, u8 dev_num, u16 reg_addr,
- void *buf, u32 len)
- {
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- int ret = 0;
- int val;
- u8 *reg_val = (u8 *)buf;
- if (!swrm) {
- dev_err(&master->dev, "%s: swrm is NULL\n", __func__);
- return -EINVAL;
- }
- if (dev_num)
- ret = swrm_cmd_fifo_rd_cmd(swrm, &val, dev_num, 0, reg_addr,
- len);
- else
- val = swrm->read(swrm->handle, reg_addr);
- if (!ret)
- *reg_val = (u8)val;
- pm_runtime_mark_last_busy(&swrm->pdev->dev);
- return ret;
- }
- static int swrm_write(struct swr_master *master, u8 dev_num, u16 reg_addr,
- const void *buf)
- {
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- int ret = 0;
- u8 reg_val = *(u8 *)buf;
- if (!swrm) {
- dev_err(&master->dev, "%s: swrm is NULL\n", __func__);
- return -EINVAL;
- }
- if (dev_num)
- ret = swrm_cmd_fifo_wr_cmd(swrm, reg_val, dev_num, 0, reg_addr);
- else
- ret = swrm->write(swrm->handle, reg_addr, reg_val);
- pm_runtime_mark_last_busy(&swrm->pdev->dev);
- return ret;
- }
- static int swrm_bulk_write(struct swr_master *master, u8 dev_num, void *reg,
- const void *buf, size_t len)
- {
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- int ret = 0;
- int i;
- u32 *val;
- u32 *swr_fifo_reg;
- if (!swrm || !swrm->handle) {
- dev_err(&master->dev, "%s: swrm is NULL\n", __func__);
- return -EINVAL;
- }
- if (len <= 0)
- return -EINVAL;
- if (dev_num) {
- swr_fifo_reg = kcalloc(len, sizeof(u32), GFP_KERNEL);
- if (!swr_fifo_reg) {
- ret = -ENOMEM;
- goto err;
- }
- val = kcalloc(len, sizeof(u32), GFP_KERNEL);
- if (!val) {
- ret = -ENOMEM;
- goto mem_fail;
- }
- for (i = 0; i < len; i++) {
- val[i] = swrm_get_packed_reg_val(&swrm->wcmd_id,
- ((u8 *)buf)[i],
- dev_num,
- ((u16 *)reg)[i]);
- swr_fifo_reg[i] = SWRM_CMD_FIFO_WR_CMD;
- }
- ret = swrm->bulk_write(swrm->handle, swr_fifo_reg, val, len);
- if (ret) {
- dev_err(&master->dev, "%s: bulk write failed\n",
- __func__);
- ret = -EINVAL;
- }
- } else {
- dev_err(&master->dev,
- "%s: No support of Bulk write for master regs\n",
- __func__);
- ret = -EINVAL;
- goto err;
- }
- kfree(val);
- mem_fail:
- kfree(swr_fifo_reg);
- err:
- pm_runtime_mark_last_busy(&swrm->pdev->dev);
- return ret;
- }
- static u8 get_inactive_bank_num(struct swr_mstr_ctrl *swrm)
- {
- return (swrm->read(swrm->handle, SWRM_MCP_STATUS) &
- SWRM_MCP_STATUS_BANK_NUM_MASK) ? 0 : 1;
- }
- static void enable_bank_switch(struct swr_mstr_ctrl *swrm, u8 bank,
- u8 row, u8 col)
- {
- /* apply div2 setting for inactive bank before bank switch */
- swrm_cmd_fifo_wr_cmd(swrm, 0x01, 0xF, 0x00,
- SWRS_SCP_HOST_CLK_DIV2_CTL_BANK(bank));
- swrm_cmd_fifo_wr_cmd(swrm, ((row << 3) | col), 0xF, 0xF,
- SWRS_SCP_FRAME_CTRL_BANK(bank));
- }
- static struct swr_port_info *swrm_get_port(struct swr_master *master,
- u8 port_id)
- {
- int i;
- struct swr_port_info *port = NULL;
- for (i = 0; i < SWR_MSTR_PORT_LEN; i++) {
- port = &master->port[i];
- if (port->slave_port_id == port_id) {
- dev_dbg(&master->dev, "%s: port_id: %d, index: %d\n",
- __func__, port_id, i);
- return port;
- }
- }
- return NULL;
- }
- static struct swr_port_info *swrm_get_avail_port(struct swr_master *master)
- {
- int i;
- struct swr_port_info *port = NULL;
- for (i = 0; i < SWR_MSTR_PORT_LEN; i++) {
- port = &master->port[i];
- if (port->port_en)
- continue;
- dev_dbg(&master->dev, "%s: port_id: %d, index: %d\n",
- __func__, port->slave_port_id, i);
- return port;
- }
- return NULL;
- }
- static struct swr_port_info *swrm_get_enabled_port(struct swr_master *master,
- u8 port_id)
- {
- int i;
- struct swr_port_info *port = NULL;
- for (i = 0; i < SWR_MSTR_PORT_LEN; i++) {
- port = &master->port[i];
- if ((port->slave_port_id == port_id) && (port->port_en == true))
- break;
- }
- if (i == SWR_MSTR_PORT_LEN)
- port = NULL;
- return port;
- }
- static bool swrm_remove_from_group(struct swr_master *master)
- {
- struct swr_device *swr_dev;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- bool is_removed = false;
- if (!swrm)
- goto end;
- mutex_lock(&swrm->mlock);
- if ((swrm->num_rx_chs > 1) &&
- (swrm->num_rx_chs == swrm->num_cfg_devs)) {
- list_for_each_entry(swr_dev, &master->devices,
- dev_list) {
- swr_dev->group_id = SWR_GROUP_NONE;
- master->gr_sid = 0;
- }
- is_removed = true;
- }
- mutex_unlock(&swrm->mlock);
- end:
- return is_removed;
- }
- static void swrm_cleanup_disabled_data_ports(struct swr_master *master,
- u8 bank)
- {
- u32 value;
- struct swr_port_info *port;
- int i;
- int port_type;
- struct swrm_mports *mport, *mport_next = NULL;
- int port_disable_cnt = 0;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- if (!swrm) {
- pr_err("%s: swrm is null\n", __func__);
- return;
- }
- dev_dbg(swrm->dev, "%s: master num_port: %d\n", __func__,
- master->num_port);
- mport = list_first_entry_or_null(&swrm->mport_list,
- struct swrm_mports,
- list);
- if (!mport) {
- dev_err(swrm->dev, "%s: list is empty\n", __func__);
- return;
- }
- for (i = 0; i < master->num_port; i++) {
- port = swrm_get_port(master, mstr_ports[mport->id]);
- if (!port || port->ch_en)
- goto inc_loop;
- port_disable_cnt++;
- port_type = mstr_port_type[mport->id];
- value = ((port->ch_en)
- << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT);
- value |= ((port->offset2)
- << SWRM_DP_PORT_CTRL_OFFSET2_SHFT);
- value |= ((port->offset1)
- << SWRM_DP_PORT_CTRL_OFFSET1_SHFT);
- value |= port->sinterval;
- swrm->write(swrm->handle,
- SWRM_DP_PORT_CTRL_BANK((mport->id+1), bank),
- value);
- swrm_cmd_fifo_wr_cmd(swrm, 0x00, port->dev_num, 0x00,
- SWRS_DP_CHANNEL_ENABLE_BANK(port_type, bank));
- dev_dbg(swrm->dev, "%s: mport :%d, reg: 0x%x, val: 0x%x\n",
- __func__, mport->id,
- (SWRM_DP_PORT_CTRL_BANK((mport->id+1), bank)), value);
- inc_loop:
- mport_next = list_next_entry(mport, list);
- if (port && !port->ch_en) {
- list_del(&mport->list);
- kfree(mport);
- }
- if (!mport_next) {
- dev_err(swrm->dev, "%s: end of list\n", __func__);
- break;
- }
- mport = mport_next;
- }
- master->num_port -= port_disable_cnt;
- dev_dbg(swrm->dev, "%s:disable ports: %d, active ports (rem): %d\n",
- __func__, port_disable_cnt, master->num_port);
- }
- static int swrm_slvdev_datapath_control(struct swr_master *master,
- bool enable)
- {
- u8 bank;
- u32 value, n_col;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- int mask = (SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK |
- SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK |
- SWRM_MCP_FRAME_CTRL_BANK_SSP_PERIOD_BMSK);
- u8 inactive_bank;
- if (!swrm) {
- pr_err("%s: swrm is null\n", __func__);
- return 0;
- }
- bank = get_inactive_bank_num(swrm);
- dev_dbg(swrm->dev, "%s: enable: %d, cfg_devs: %d\n",
- __func__, enable, swrm->num_cfg_devs);
- if (enable) {
- /* set Row = 48 and col = 16 */
- n_col = SWR_MAX_COL;
- } else {
- /*
- * Do not change to 48x2 if number of channels configured
- * as stereo and if disable datapath is called for the
- * first slave device
- */
- if (swrm->num_cfg_devs > 0)
- n_col = SWR_MAX_COL;
- else
- n_col = SWR_MIN_COL;
- /*
- * All ports are already disabled, no need to perform
- * bank-switch and copy operation. This case can arise
- * when speaker channels are enabled in stereo mode with
- * BROADCAST and disabled in GROUP_NONE
- */
- if (master->num_port == 0)
- return 0;
- }
- value = swrm->read(swrm->handle, SWRM_MCP_FRAME_CTRL_BANK_ADDR(bank));
- value &= (~mask);
- value |= ((0 << SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_SHFT) |
- (n_col << SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_SHFT) |
- (0 << SWRM_MCP_FRAME_CTRL_BANK_SSP_PERIOD_SHFT));
- swrm->write(swrm->handle, SWRM_MCP_FRAME_CTRL_BANK_ADDR(bank), value);
- dev_dbg(swrm->dev, "%s: regaddr: 0x%x, value: 0x%x\n", __func__,
- SWRM_MCP_FRAME_CTRL_BANK_ADDR(bank), value);
- enable_bank_switch(swrm, bank, SWR_MAX_ROW, n_col);
- inactive_bank = bank ? 0 : 1;
- if (enable)
- swrm_copy_data_port_config(master, inactive_bank);
- else
- swrm_cleanup_disabled_data_ports(master, inactive_bank);
- if (!swrm_is_port_en(master)) {
- dev_dbg(&master->dev, "%s: pm_runtime auto suspend triggered\n",
- __func__);
- pm_runtime_mark_last_busy(&swrm->pdev->dev);
- pm_runtime_put_autosuspend(&swrm->pdev->dev);
- }
- return 0;
- }
- static void swrm_apply_port_config(struct swr_master *master)
- {
- u8 bank;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- if (!swrm) {
- pr_err("%s: Invalid handle to swr controller\n",
- __func__);
- return;
- }
- bank = get_inactive_bank_num(swrm);
- dev_dbg(swrm->dev, "%s: enter bank: %d master_ports: %d\n",
- __func__, bank, master->num_port);
- swrm_copy_data_port_config(master, bank);
- }
- static void swrm_copy_data_port_config(struct swr_master *master, u8 bank)
- {
- u32 value;
- struct swr_port_info *port;
- int i;
- int port_type;
- struct swrm_mports *mport;
- u32 reg[SWRM_MAX_PORT_REG];
- u32 val[SWRM_MAX_PORT_REG];
- int len = 0;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- if (!swrm) {
- pr_err("%s: swrm is null\n", __func__);
- return;
- }
- dev_dbg(swrm->dev, "%s: master num_port: %d\n", __func__,
- master->num_port);
- mport = list_first_entry_or_null(&swrm->mport_list,
- struct swrm_mports,
- list);
- if (!mport) {
- dev_err(swrm->dev, "%s: list is empty\n", __func__);
- return;
- }
- for (i = 0; i < master->num_port; i++) {
- port = swrm_get_enabled_port(master, mstr_ports[mport->id]);
- if (!port)
- continue;
- port_type = mstr_port_type[mport->id];
- if (!port->dev_num || (port->dev_num > master->num_dev)) {
- dev_dbg(swrm->dev, "%s: invalid device id = %d\n",
- __func__, port->dev_num);
- continue;
- }
- value = ((port->ch_en)
- << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT);
- value |= ((port->offset2)
- << SWRM_DP_PORT_CTRL_OFFSET2_SHFT);
- value |= ((port->offset1)
- << SWRM_DP_PORT_CTRL_OFFSET1_SHFT);
- value |= port->sinterval;
- reg[len] = SWRM_DP_PORT_CTRL_BANK((mport->id+1), bank);
- val[len++] = value;
- dev_dbg(swrm->dev, "%s: mport :%d, reg: 0x%x, val: 0x%x\n",
- __func__, mport->id,
- (SWRM_DP_PORT_CTRL_BANK((mport->id+1), bank)), value);
- reg[len] = SWRM_CMD_FIFO_WR_CMD;
- val[len++] = SWR_REG_VAL_PACK(port->ch_en, port->dev_num, 0x00,
- SWRS_DP_CHANNEL_ENABLE_BANK(port_type, bank));
- reg[len] = SWRM_CMD_FIFO_WR_CMD;
- val[len++] = SWR_REG_VAL_PACK(port->sinterval,
- port->dev_num, 0x00,
- SWRS_DP_SAMPLE_CONTROL_1_BANK(port_type, bank));
- reg[len] = SWRM_CMD_FIFO_WR_CMD;
- val[len++] = SWR_REG_VAL_PACK(port->offset1,
- port->dev_num, 0x00,
- SWRS_DP_OFFSET_CONTROL_1_BANK(port_type, bank));
- if (port_type != 0) {
- reg[len] = SWRM_CMD_FIFO_WR_CMD;
- val[len++] = SWR_REG_VAL_PACK(port->offset2,
- port->dev_num, 0x00,
- SWRS_DP_OFFSET_CONTROL_2_BANK(port_type,
- bank));
- }
- mport = list_next_entry(mport, list);
- if (!mport) {
- dev_err(swrm->dev, "%s: end of list\n", __func__);
- break;
- }
- }
- swrm->bulk_write(swrm->handle, reg, val, len);
- }
- static int swrm_connect_port(struct swr_master *master,
- struct swr_params *portinfo)
- {
- int i;
- struct swr_port_info *port;
- int ret = 0;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- struct swrm_mports *mport;
- struct list_head *ptr, *next;
- dev_dbg(&master->dev, "%s: enter\n", __func__);
- if (!portinfo)
- return -EINVAL;
- if (!swrm) {
- dev_err(&master->dev,
- "%s: Invalid handle to swr controller\n",
- __func__);
- return -EINVAL;
- }
- mutex_lock(&swrm->mlock);
- if (!swrm_is_port_en(master))
- pm_runtime_get_sync(&swrm->pdev->dev);
- for (i = 0; i < portinfo->num_port; i++) {
- mport = kzalloc(sizeof(struct swrm_mports), GFP_KERNEL);
- if (!mport) {
- ret = -ENOMEM;
- goto mem_fail;
- }
- ret = swrm_get_master_port(&mport->id,
- portinfo->port_id[i]);
- if (ret < 0) {
- dev_err(&master->dev,
- "%s: mstr portid for slv port %d not found\n",
- __func__, portinfo->port_id[i]);
- goto port_fail;
- }
- port = swrm_get_avail_port(master);
- if (!port) {
- dev_err(&master->dev,
- "%s: avail ports not found!\n", __func__);
- goto port_fail;
- }
- list_add(&mport->list, &swrm->mport_list);
- port->dev_num = portinfo->dev_num;
- port->slave_port_id = portinfo->port_id[i];
- port->num_ch = portinfo->num_ch[i];
- port->ch_rate = portinfo->ch_rate[i];
- port->ch_en = portinfo->ch_en[i];
- port->port_en = true;
- dev_dbg(&master->dev,
- "%s: mstr port %d, slv port %d ch_rate %d num_ch %d\n",
- __func__, mport->id, port->slave_port_id, port->ch_rate,
- port->num_ch);
- }
- master->num_port += portinfo->num_port;
- if (master->num_port >= SWR_MSTR_PORT_LEN)
- master->num_port = SWR_MSTR_PORT_LEN;
- swrm_get_port_config(master);
- swr_port_response(master, portinfo->tid);
- swrm->num_cfg_devs += 1;
- dev_dbg(&master->dev, "%s: cfg_devs: %d, rx_chs: %d\n",
- __func__, swrm->num_cfg_devs, swrm->num_rx_chs);
- if (swrm->num_rx_chs > 1) {
- if (swrm->num_rx_chs == swrm->num_cfg_devs)
- swrm_apply_port_config(master);
- } else {
- swrm_apply_port_config(master);
- }
- mutex_unlock(&swrm->mlock);
- return 0;
- port_fail:
- kfree(mport);
- mem_fail:
- list_for_each_safe(ptr, next, &swrm->mport_list) {
- mport = list_entry(ptr, struct swrm_mports, list);
- for (i = 0; i < portinfo->num_port; i++) {
- if (portinfo->port_id[i] == mstr_ports[mport->id]) {
- port = swrm_get_port(master,
- portinfo->port_id[i]);
- if (port)
- port->ch_en = false;
- list_del(&mport->list);
- kfree(mport);
- break;
- }
- }
- }
- mutex_unlock(&swrm->mlock);
- return ret;
- }
- static int swrm_disconnect_port(struct swr_master *master,
- struct swr_params *portinfo)
- {
- int i;
- struct swr_port_info *port;
- u8 bank;
- u32 value;
- int ret = 0;
- u8 mport_id = 0;
- int port_type = 0;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(master);
- if (!swrm) {
- dev_err(&master->dev,
- "%s: Invalid handle to swr controller\n",
- __func__);
- return -EINVAL;
- }
- if (!portinfo) {
- dev_err(&master->dev, "%s: portinfo is NULL\n", __func__);
- return -EINVAL;
- }
- mutex_lock(&swrm->mlock);
- bank = get_inactive_bank_num(swrm);
- for (i = 0; i < portinfo->num_port; i++) {
- ret = swrm_get_master_port(&mport_id,
- portinfo->port_id[i]);
- if (ret < 0) {
- dev_err(&master->dev,
- "%s: mstr portid for slv port %d not found\n",
- __func__, portinfo->port_id[i]);
- mutex_unlock(&swrm->mlock);
- return -EINVAL;
- }
- port = swrm_get_enabled_port(master, portinfo->port_id[i]);
- if (!port) {
- dev_dbg(&master->dev, "%s: port %d already disabled\n",
- __func__, portinfo->port_id[i]);
- continue;
- }
- port_type = mstr_port_type[mport_id];
- port->dev_num = portinfo->dev_num;
- port->port_en = false;
- port->ch_en = 0;
- value = port->ch_en << SWRM_DP_PORT_CTRL_EN_CHAN_SHFT;
- value |= (port->offset2 << SWRM_DP_PORT_CTRL_OFFSET2_SHFT);
- value |= (port->offset1 << SWRM_DP_PORT_CTRL_OFFSET1_SHFT);
- value |= port->sinterval;
- swrm->write(swrm->handle,
- SWRM_DP_PORT_CTRL_BANK((mport_id+1), bank),
- value);
- swrm_cmd_fifo_wr_cmd(swrm, 0x00, port->dev_num, 0x00,
- SWRS_DP_CHANNEL_ENABLE_BANK(port_type, bank));
- }
- swr_port_response(master, portinfo->tid);
- swrm->num_cfg_devs -= 1;
- dev_dbg(&master->dev, "%s: cfg_devs: %d, rx_chs: %d, active ports: %d\n",
- __func__, swrm->num_cfg_devs, swrm->num_rx_chs,
- master->num_port);
- mutex_unlock(&swrm->mlock);
- return 0;
- }
- static int swrm_check_slave_change_status(struct swr_mstr_ctrl *swrm,
- int status, u8 *devnum)
- {
- int i;
- int new_sts = status;
- int ret = SWR_NOT_PRESENT;
- if (status != swrm->slave_status) {
- for (i = 0; i < (swrm->master.num_dev + 1); i++) {
- if ((status & SWRM_MCP_SLV_STATUS_MASK) !=
- (swrm->slave_status & SWRM_MCP_SLV_STATUS_MASK)) {
- ret = (status & SWRM_MCP_SLV_STATUS_MASK);
- *devnum = i;
- break;
- }
- status >>= 2;
- swrm->slave_status >>= 2;
- }
- swrm->slave_status = new_sts;
- }
- return ret;
- }
- static irqreturn_t swr_mstr_interrupt(int irq, void *dev)
- {
- struct swr_mstr_ctrl *swrm = dev;
- u32 value, intr_sts;
- int status, chg_sts, i;
- u8 devnum = 0;
- int ret = IRQ_HANDLED;
- mutex_lock(&swrm->reslock);
- swrm_clk_request(swrm, true);
- mutex_unlock(&swrm->reslock);
- intr_sts = swrm->read(swrm->handle, SWRM_INTERRUPT_STATUS);
- intr_sts &= SWRM_INTERRUPT_STATUS_RMSK;
- for (i = 0; i < SWRM_INTERRUPT_MAX; i++) {
- value = intr_sts & (1 << i);
- if (!value)
- continue;
- swrm->write(swrm->handle, SWRM_INTERRUPT_CLEAR, value);
- switch (value) {
- case SWRM_INTERRUPT_STATUS_SLAVE_PEND_IRQ:
- dev_dbg(swrm->dev, "SWR slave pend irq\n");
- break;
- case SWRM_INTERRUPT_STATUS_NEW_SLAVE_ATTACHED:
- dev_dbg(swrm->dev, "SWR new slave attached\n");
- break;
- case SWRM_INTERRUPT_STATUS_CHANGE_ENUM_SLAVE_STATUS:
- status = swrm->read(swrm->handle, SWRM_MCP_SLV_STATUS);
- if (status == swrm->slave_status) {
- dev_dbg(swrm->dev,
- "%s: No change in slave status: %d\n",
- __func__, status);
- break;
- }
- chg_sts = swrm_check_slave_change_status(swrm, status,
- &devnum);
- switch (chg_sts) {
- case SWR_NOT_PRESENT:
- dev_dbg(swrm->dev, "device %d got detached\n",
- devnum);
- break;
- case SWR_ATTACHED_OK:
- dev_dbg(swrm->dev, "device %d got attached\n",
- devnum);
- break;
- case SWR_ALERT:
- dev_dbg(swrm->dev,
- "device %d has pending interrupt\n",
- devnum);
- break;
- }
- break;
- case SWRM_INTERRUPT_STATUS_MASTER_CLASH_DET:
- dev_err_ratelimited(swrm->dev, "SWR bus clash detected\n");
- break;
- case SWRM_INTERRUPT_STATUS_RD_FIFO_OVERFLOW:
- dev_dbg(swrm->dev, "SWR read FIFO overflow\n");
- break;
- case SWRM_INTERRUPT_STATUS_RD_FIFO_UNDERFLOW:
- dev_dbg(swrm->dev, "SWR read FIFO underflow\n");
- break;
- case SWRM_INTERRUPT_STATUS_WR_CMD_FIFO_OVERFLOW:
- dev_dbg(swrm->dev, "SWR write FIFO overflow\n");
- break;
- case SWRM_INTERRUPT_STATUS_CMD_ERROR:
- value = swrm->read(swrm->handle, SWRM_CMD_FIFO_STATUS);
- dev_err_ratelimited(swrm->dev,
- "SWR CMD error, fifo status 0x%x, flushing fifo\n",
- value);
- swrm->write(swrm->handle, SWRM_CMD_FIFO_CMD, 0x1);
- break;
- case SWRM_INTERRUPT_STATUS_DOUT_PORT_COLLISION:
- dev_dbg(swrm->dev, "SWR Port collision detected\n");
- break;
- case SWRM_INTERRUPT_STATUS_READ_EN_RD_VALID_MISMATCH:
- dev_dbg(swrm->dev, "SWR read enable valid mismatch\n");
- break;
- case SWRM_INTERRUPT_STATUS_SPECIAL_CMD_ID_FINISHED:
- complete(&swrm->broadcast);
- dev_dbg(swrm->dev, "SWR cmd id finished\n");
- break;
- case SWRM_INTERRUPT_STATUS_NEW_SLAVE_AUTO_ENUM_FINISHED:
- break;
- case SWRM_INTERRUPT_STATUS_AUTO_ENUM_FAILED:
- break;
- case SWRM_INTERRUPT_STATUS_AUTO_ENUM_TABLE_IS_FULL:
- break;
- case SWRM_INTERRUPT_STATUS_BUS_RESET_FINISHED:
- complete(&swrm->reset);
- break;
- case SWRM_INTERRUPT_STATUS_CLK_STOP_FINISHED:
- break;
- default:
- dev_err_ratelimited(swrm->dev, "SWR unknown interrupt\n");
- ret = IRQ_NONE;
- break;
- }
- }
- mutex_lock(&swrm->reslock);
- swrm_clk_request(swrm, false);
- mutex_unlock(&swrm->reslock);
- return ret;
- }
- static int swrm_get_device_status(struct swr_mstr_ctrl *swrm, u8 devnum)
- {
- u32 val;
- swrm->slave_status = swrm->read(swrm->handle, SWRM_MCP_SLV_STATUS);
- val = (swrm->slave_status >> (devnum * 2));
- val &= SWRM_MCP_SLV_STATUS_MASK;
- return val;
- }
- static int swrm_get_logical_dev_num(struct swr_master *mstr, u64 dev_id,
- u8 *dev_num)
- {
- int i;
- u64 id = 0;
- int ret = -EINVAL;
- struct swr_mstr_ctrl *swrm = swr_get_ctrl_data(mstr);
- struct swr_device *swr_dev;
- u32 num_dev = 0;
- if (!swrm) {
- pr_err("%s: Invalid handle to swr controller\n",
- __func__);
- return ret;
- }
- if (swrm->num_dev)
- num_dev = swrm->num_dev;
- else
- num_dev = mstr->num_dev;
- pm_runtime_get_sync(&swrm->pdev->dev);
- for (i = 1; i < (num_dev + 1); i++) {
- id = ((u64)(swrm->read(swrm->handle,
- SWRM_ENUMERATOR_SLAVE_DEV_ID_2(i))) << 32);
- id |= swrm->read(swrm->handle,
- SWRM_ENUMERATOR_SLAVE_DEV_ID_1(i));
- /*
- * As pm_runtime_get_sync() brings all slaves out of reset
- * update logical device number for all slaves.
- */
- list_for_each_entry(swr_dev, &mstr->devices, dev_list) {
- if (swr_dev->addr == (id & SWR_DEV_ID_MASK)) {
- u32 status = swrm_get_device_status(swrm, i);
- if ((status == 0x01) || (status == 0x02)) {
- swr_dev->dev_num = i;
- if ((id & SWR_DEV_ID_MASK) == dev_id) {
- *dev_num = i;
- ret = 0;
- }
- dev_dbg(swrm->dev, "%s: devnum %d is assigned for dev addr %lx\n",
- __func__, i, swr_dev->addr);
- }
- }
- }
- }
- if (ret)
- dev_err(swrm->dev, "%s: device 0x%llx is not ready\n",
- __func__, dev_id);
- pm_runtime_mark_last_busy(&swrm->pdev->dev);
- pm_runtime_put_autosuspend(&swrm->pdev->dev);
- return ret;
- }
- static int swrm_master_init(struct swr_mstr_ctrl *swrm)
- {
- int ret = 0;
- u32 val;
- u8 row_ctrl = SWR_MAX_ROW;
- u8 col_ctrl = SWR_MIN_COL;
- u8 ssp_period = 1;
- u8 retry_cmd_num = 3;
- u32 reg[SWRM_MAX_INIT_REG];
- u32 value[SWRM_MAX_INIT_REG];
- int len = 0;
- /* Clear Rows and Cols */
- val = ((row_ctrl << SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_SHFT) |
- (col_ctrl << SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_SHFT) |
- (ssp_period << SWRM_MCP_FRAME_CTRL_BANK_SSP_PERIOD_SHFT));
- reg[len] = SWRM_MCP_FRAME_CTRL_BANK_ADDR(0);
- value[len++] = val;
- /* Set Auto enumeration flag */
- reg[len] = SWRM_ENUMERATOR_CFG_ADDR;
- value[len++] = 1;
- /* Mask soundwire interrupts */
- reg[len] = SWRM_INTERRUPT_MASK_ADDR;
- value[len++] = 0x1FFFD;
- /* Configure No pings */
- val = swrm->read(swrm->handle, SWRM_MCP_CFG_ADDR);
- val &= ~SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_BMSK;
- val |= (0x1f << SWRM_MCP_CFG_MAX_NUM_OF_CMD_NO_PINGS_SHFT);
- reg[len] = SWRM_MCP_CFG_ADDR;
- value[len++] = val;
- /* Configure number of retries of a read/write cmd */
- val = (retry_cmd_num << SWRM_CMD_FIFO_CFG_NUM_OF_CMD_RETRY_SHFT);
- reg[len] = SWRM_CMD_FIFO_CFG_ADDR;
- value[len++] = val;
- /* Set IRQ to PULSE */
- reg[len] = SWRM_COMP_CFG_ADDR;
- value[len++] = 0x02;
- reg[len] = SWRM_COMP_CFG_ADDR;
- value[len++] = 0x03;
- reg[len] = SWRM_INTERRUPT_CLEAR;
- value[len++] = 0x08;
- swrm->bulk_write(swrm->handle, reg, value, len);
- return ret;
- }
- static int swrm_event_notify(struct notifier_block *self,
- unsigned long action, void *data)
- {
- struct swr_mstr_ctrl *swrm = container_of(self, struct swr_mstr_ctrl,
- event_notifier);
- if (!swrm || !swrm->pdev) {
- pr_err("%s: swrm or pdev is NULL\n", __func__);
- return -EINVAL;
- }
- if (action != MSM_AUD_DC_EVENT) {
- dev_err(&swrm->pdev->dev, "%s: invalid event type: %lu\n", __func__, action);
- return -EINVAL;
- }
- schedule_work(&(swrm->dc_presence_work));
- return 0;
- }
- static void swrm_notify_work_fn(struct work_struct *work)
- {
- struct swr_mstr_ctrl *swrm = container_of(work, struct swr_mstr_ctrl,
- dc_presence_work);
- swrm_wcd_notify(swrm->pdev, SWR_DEVICE_DOWN, NULL);
- }
- static int swrm_probe(struct platform_device *pdev)
- {
- struct swr_mstr_ctrl *swrm;
- struct swr_ctrl_platform_data *pdata;
- int ret;
- /* Allocate soundwire master driver structure */
- swrm = kzalloc(sizeof(struct swr_mstr_ctrl), GFP_KERNEL);
- if (!swrm) {
- ret = -ENOMEM;
- goto err_memory_fail;
- }
- swrm->dev = &pdev->dev;
- swrm->pdev = pdev;
- platform_set_drvdata(pdev, swrm);
- swr_set_ctrl_data(&swrm->master, swrm);
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "%s: pdata from parent is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->handle = (void *)pdata->handle;
- if (!swrm->handle) {
- dev_err(&pdev->dev, "%s: swrm->handle is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->read = pdata->read;
- if (!swrm->read) {
- dev_err(&pdev->dev, "%s: swrm->read is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->write = pdata->write;
- if (!swrm->write) {
- dev_err(&pdev->dev, "%s: swrm->write is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->bulk_write = pdata->bulk_write;
- if (!swrm->bulk_write) {
- dev_err(&pdev->dev, "%s: swrm->bulk_write is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->clk = pdata->clk;
- if (!swrm->clk) {
- dev_err(&pdev->dev, "%s: swrm->clk is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->reg_irq = pdata->reg_irq;
- if (!swrm->reg_irq) {
- dev_err(&pdev->dev, "%s: swrm->reg_irq is NULL\n",
- __func__);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- swrm->master.read = swrm_read;
- swrm->master.write = swrm_write;
- swrm->master.bulk_write = swrm_bulk_write;
- swrm->master.get_logical_dev_num = swrm_get_logical_dev_num;
- swrm->master.connect_port = swrm_connect_port;
- swrm->master.disconnect_port = swrm_disconnect_port;
- swrm->master.slvdev_datapath_control = swrm_slvdev_datapath_control;
- swrm->master.remove_from_group = swrm_remove_from_group;
- swrm->master.dev.parent = &pdev->dev;
- swrm->master.dev.of_node = pdev->dev.of_node;
- swrm->master.num_port = 0;
- swrm->num_enum_slaves = 0;
- swrm->rcmd_id = 0;
- swrm->wcmd_id = 0;
- swrm->slave_status = 0;
- swrm->num_rx_chs = 0;
- swrm->clk_ref_count = 0;
- swrm->state = SWR_MSTR_RESUME;
- init_completion(&swrm->reset);
- init_completion(&swrm->broadcast);
- mutex_init(&swrm->mlock);
- INIT_LIST_HEAD(&swrm->mport_list);
- mutex_init(&swrm->reslock);
- mutex_init(&swrm->force_down_lock);
- ret = of_property_read_u32(swrm->dev->of_node, "qcom,swr-num-dev",
- &swrm->num_dev);
- if (ret)
- dev_dbg(&pdev->dev, "%s: Looking up %s property failed\n",
- __func__, "qcom,swr-num-dev");
- else {
- if (swrm->num_dev > SWR_MAX_SLAVE_DEVICES) {
- dev_err(&pdev->dev, "%s: num_dev %d > max limit %d\n",
- __func__, swrm->num_dev, SWR_MAX_SLAVE_DEVICES);
- ret = -EINVAL;
- goto err_pdata_fail;
- }
- }
- ret = swrm->reg_irq(swrm->handle, swr_mstr_interrupt, swrm,
- SWR_IRQ_REGISTER);
- if (ret) {
- dev_err(&pdev->dev, "%s: IRQ register failed ret %d\n",
- __func__, ret);
- goto err_irq_fail;
- }
- ret = swr_register_master(&swrm->master);
- if (ret) {
- dev_err(&pdev->dev, "%s: error adding swr master\n", __func__);
- goto err_mstr_fail;
- }
- /* Add devices registered with board-info as the
- * controller will be up now
- */
- swr_master_add_boarddevices(&swrm->master);
- mutex_lock(&swrm->mlock);
- swrm_clk_request(swrm, true);
- ret = swrm_master_init(swrm);
- if (ret < 0) {
- dev_err(&pdev->dev,
- "%s: Error in master Initializaiton, err %d\n",
- __func__, ret);
- mutex_unlock(&swrm->mlock);
- goto err_mstr_fail;
- }
- swrm->version = swrm->read(swrm->handle, SWRM_COMP_HW_VERSION);
- mutex_unlock(&swrm->mlock);
- if (pdev->dev.of_node)
- of_register_swr_devices(&swrm->master);
- dbgswrm = swrm;
- debugfs_swrm_dent = debugfs_create_dir(dev_name(&pdev->dev), 0);
- if (!IS_ERR(debugfs_swrm_dent)) {
- debugfs_peek = debugfs_create_file("swrm_peek",
- S_IFREG | 0444, debugfs_swrm_dent,
- (void *) "swrm_peek", &swrm_debug_ops);
- debugfs_poke = debugfs_create_file("swrm_poke",
- S_IFREG | 0444, debugfs_swrm_dent,
- (void *) "swrm_poke", &swrm_debug_ops);
- debugfs_reg_dump = debugfs_create_file("swrm_reg_dump",
- S_IFREG | 0444, debugfs_swrm_dent,
- (void *) "swrm_reg_dump",
- &swrm_debug_ops);
- }
- pm_runtime_set_autosuspend_delay(&pdev->dev, auto_suspend_timer);
- pm_runtime_use_autosuspend(&pdev->dev);
- pm_runtime_set_active(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
- pm_runtime_mark_last_busy(&pdev->dev);
- INIT_WORK(&swrm->dc_presence_work, swrm_notify_work_fn);
- swrm->event_notifier.notifier_call = swrm_event_notify;
- msm_aud_evt_register_client(&swrm->event_notifier);
- return 0;
- err_mstr_fail:
- swrm->reg_irq(swrm->handle, swr_mstr_interrupt,
- swrm, SWR_IRQ_FREE);
- err_irq_fail:
- mutex_destroy(&swrm->mlock);
- mutex_destroy(&swrm->reslock);
- mutex_destroy(&swrm->force_down_lock);
- err_pdata_fail:
- kfree(swrm);
- err_memory_fail:
- return ret;
- }
- static int swrm_remove(struct platform_device *pdev)
- {
- struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
- if (swrm->reg_irq)
- swrm->reg_irq(swrm->handle, swr_mstr_interrupt,
- swrm, SWR_IRQ_FREE);
- if (swrm->mstr_port) {
- kfree(swrm->mstr_port->port);
- swrm->mstr_port->port = NULL;
- kfree(swrm->mstr_port);
- swrm->mstr_port = NULL;
- }
- pm_runtime_disable(&pdev->dev);
- pm_runtime_set_suspended(&pdev->dev);
- swr_unregister_master(&swrm->master);
- msm_aud_evt_unregister_client(&swrm->event_notifier);
- mutex_destroy(&swrm->mlock);
- mutex_destroy(&swrm->reslock);
- mutex_destroy(&swrm->force_down_lock);
- kfree(swrm);
- return 0;
- }
- static int swrm_clk_pause(struct swr_mstr_ctrl *swrm)
- {
- u32 val;
- dev_dbg(swrm->dev, "%s: state: %d\n", __func__, swrm->state);
- swrm->write(swrm->handle, SWRM_INTERRUPT_MASK_ADDR, 0x1FDFD);
- val = swrm->read(swrm->handle, SWRM_MCP_CFG_ADDR);
- val |= SWRM_MCP_CFG_BUS_CLK_PAUSE_BMSK;
- swrm->write(swrm->handle, SWRM_MCP_CFG_ADDR, val);
- swrm->state = SWR_MSTR_PAUSE;
- return 0;
- }
- #ifdef CONFIG_PM
- static int swrm_runtime_resume(struct device *dev)
- {
- struct platform_device *pdev = to_platform_device(dev);
- struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
- int ret = 0;
- struct swr_master *mstr = &swrm->master;
- struct swr_device *swr_dev;
- dev_dbg(dev, "%s: pm_runtime: resume, state:%d\n",
- __func__, swrm->state);
- mutex_lock(&swrm->reslock);
- if ((swrm->state == SWR_MSTR_PAUSE) ||
- (swrm->state == SWR_MSTR_DOWN)) {
- if (swrm->state == SWR_MSTR_DOWN) {
- if (swrm_clk_request(swrm, true))
- goto exit;
- }
- list_for_each_entry(swr_dev, &mstr->devices, dev_list) {
- ret = swr_device_up(swr_dev);
- if (ret) {
- dev_err(dev,
- "%s: failed to wakeup swr dev %d\n",
- __func__, swr_dev->dev_num);
- swrm_clk_request(swrm, false);
- goto exit;
- }
- }
- swrm->write(swrm->handle, SWRM_COMP_SW_RESET, 0x01);
- swrm->write(swrm->handle, SWRM_COMP_SW_RESET, 0x01);
- swrm_master_init(swrm);
- }
- exit:
- pm_runtime_set_autosuspend_delay(&pdev->dev, auto_suspend_timer);
- mutex_unlock(&swrm->reslock);
- return ret;
- }
- static int swrm_runtime_suspend(struct device *dev)
- {
- struct platform_device *pdev = to_platform_device(dev);
- struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
- int ret = 0;
- struct swr_master *mstr = &swrm->master;
- struct swr_device *swr_dev;
- int current_state = 0;
- dev_dbg(dev, "%s: pm_runtime: suspend state: %d\n",
- __func__, swrm->state);
- mutex_lock(&swrm->reslock);
- mutex_lock(&swrm->force_down_lock);
- current_state = swrm->state;
- mutex_unlock(&swrm->force_down_lock);
- if ((current_state == SWR_MSTR_RESUME) ||
- (current_state == SWR_MSTR_UP) ||
- (current_state == SWR_MSTR_SSR)) {
- if ((current_state != SWR_MSTR_SSR) &&
- swrm_is_port_en(&swrm->master)) {
- dev_dbg(dev, "%s ports are enabled\n", __func__);
- ret = -EBUSY;
- goto exit;
- }
- swrm_clk_pause(swrm);
- swrm->write(swrm->handle, SWRM_COMP_CFG_ADDR, 0x00);
- list_for_each_entry(swr_dev, &mstr->devices, dev_list) {
- ret = swr_device_down(swr_dev);
- if (ret) {
- dev_err(dev,
- "%s: failed to shutdown swr dev %d\n",
- __func__, swr_dev->dev_num);
- goto exit;
- }
- }
- swrm_clk_request(swrm, false);
- }
- exit:
- mutex_unlock(&swrm->reslock);
- return ret;
- }
- #endif /* CONFIG_PM */
- static int swrm_device_down(struct device *dev)
- {
- struct platform_device *pdev = to_platform_device(dev);
- struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
- int ret = 0;
- dev_dbg(dev, "%s: swrm state: %d\n", __func__, swrm->state);
- mutex_lock(&swrm->force_down_lock);
- swrm->state = SWR_MSTR_SSR;
- mutex_unlock(&swrm->force_down_lock);
- /* Use pm runtime function to tear down */
- ret = pm_runtime_put_sync_suspend(dev);
- pm_runtime_get_noresume(dev);
- return ret;
- }
- /**
- * swrm_wcd_notify - parent device can notify to soundwire master through
- * this function
- * @pdev: pointer to platform device structure
- * @id: command id from parent to the soundwire master
- * @data: data from parent device to soundwire master
- */
- int swrm_wcd_notify(struct platform_device *pdev, u32 id, void *data)
- {
- struct swr_mstr_ctrl *swrm;
- int ret = 0;
- struct swr_master *mstr;
- struct swr_device *swr_dev;
- if (!pdev) {
- pr_err("%s: pdev is NULL\n", __func__);
- return -EINVAL;
- }
- swrm = platform_get_drvdata(pdev);
- if (!swrm) {
- dev_err(&pdev->dev, "%s: swrm is NULL\n", __func__);
- return -EINVAL;
- }
- mstr = &swrm->master;
- switch (id) {
- case SWR_CH_MAP:
- if (!data) {
- dev_err(swrm->dev, "%s: data is NULL\n", __func__);
- ret = -EINVAL;
- } else {
- ret = swrm_set_ch_map(swrm, data);
- }
- break;
- case SWR_DEVICE_DOWN:
- dev_dbg(swrm->dev, "%s: swr master down called\n", __func__);
- mutex_lock(&swrm->mlock);
- if ((swrm->state == SWR_MSTR_PAUSE) ||
- (swrm->state == SWR_MSTR_DOWN))
- dev_dbg(swrm->dev, "%s: SWR master is already Down: %d\n",
- __func__, swrm->state);
- else
- swrm_device_down(&pdev->dev);
- mutex_unlock(&swrm->mlock);
- break;
- case SWR_DEVICE_UP:
- dev_dbg(swrm->dev, "%s: swr master up called\n", __func__);
- mutex_lock(&swrm->mlock);
- mutex_lock(&swrm->reslock);
- if ((swrm->state == SWR_MSTR_RESUME) ||
- (swrm->state == SWR_MSTR_UP)) {
- dev_dbg(swrm->dev, "%s: SWR master is already UP: %d\n",
- __func__, swrm->state);
- list_for_each_entry(swr_dev, &mstr->devices, dev_list)
- swr_reset_device(swr_dev);
- } else {
- pm_runtime_mark_last_busy(&pdev->dev);
- mutex_unlock(&swrm->reslock);
- pm_runtime_get_sync(&pdev->dev);
- mutex_lock(&swrm->reslock);
- list_for_each_entry(swr_dev, &mstr->devices, dev_list) {
- ret = swr_reset_device(swr_dev);
- if (ret) {
- dev_err(swrm->dev,
- "%s: failed to reset swr device %d\n",
- __func__, swr_dev->dev_num);
- swrm_clk_request(swrm, false);
- }
- }
- pm_runtime_mark_last_busy(&pdev->dev);
- pm_runtime_put_autosuspend(&pdev->dev);
- }
- mutex_unlock(&swrm->reslock);
- mutex_unlock(&swrm->mlock);
- break;
- case SWR_SET_NUM_RX_CH:
- if (!data) {
- dev_err(swrm->dev, "%s: data is NULL\n", __func__);
- ret = -EINVAL;
- } else {
- mutex_lock(&swrm->mlock);
- swrm->num_rx_chs = *(int *)data;
- if ((swrm->num_rx_chs > 1) && !swrm->num_cfg_devs) {
- list_for_each_entry(swr_dev, &mstr->devices,
- dev_list) {
- ret = swr_set_device_group(swr_dev,
- SWR_BROADCAST);
- if (ret)
- dev_err(swrm->dev,
- "%s: set num ch failed\n",
- __func__);
- }
- } else {
- list_for_each_entry(swr_dev, &mstr->devices,
- dev_list) {
- ret = swr_set_device_group(swr_dev,
- SWR_GROUP_NONE);
- if (ret)
- dev_err(swrm->dev,
- "%s: set num ch failed\n",
- __func__);
- }
- }
- mutex_unlock(&swrm->mlock);
- }
- break;
- default:
- dev_err(swrm->dev, "%s: swr master unknown id %d\n",
- __func__, id);
- break;
- }
- return ret;
- }
- EXPORT_SYMBOL(swrm_wcd_notify);
- #ifdef CONFIG_PM_SLEEP
- static int swrm_suspend(struct device *dev)
- {
- int ret = -EBUSY;
- struct platform_device *pdev = to_platform_device(dev);
- struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
- dev_dbg(dev, "%s: system suspend, state: %d\n", __func__, swrm->state);
- if (!pm_runtime_enabled(dev) || !pm_runtime_suspended(dev)) {
- ret = swrm_runtime_suspend(dev);
- if (!ret) {
- /*
- * Synchronize runtime-pm and system-pm states:
- * At this point, we are already suspended. If
- * runtime-pm still thinks its active, then
- * make sure its status is in sync with HW
- * status. The three below calls let the
- * runtime-pm know that we are suspended
- * already without re-invoking the suspend
- * callback
- */
- pm_runtime_disable(dev);
- pm_runtime_set_suspended(dev);
- pm_runtime_enable(dev);
- }
- }
- if (ret == -EBUSY) {
- /*
- * There is a possibility that some audio stream is active
- * during suspend. We dont want to return suspend failure in
- * that case so that display and relevant components can still
- * go to suspend.
- * If there is some other error, then it should be passed-on
- * to system level suspend
- */
- ret = 0;
- }
- return ret;
- }
- static int swrm_resume(struct device *dev)
- {
- int ret = 0;
- struct platform_device *pdev = to_platform_device(dev);
- struct swr_mstr_ctrl *swrm = platform_get_drvdata(pdev);
- dev_dbg(dev, "%s: system resume, state: %d\n", __func__, swrm->state);
- if (!pm_runtime_enabled(dev) || !pm_runtime_suspend(dev)) {
- ret = swrm_runtime_resume(dev);
- if (!ret) {
- pm_runtime_mark_last_busy(dev);
- pm_request_autosuspend(dev);
- }
- }
- return ret;
- }
- #endif /* CONFIG_PM_SLEEP */
- static const struct dev_pm_ops swrm_dev_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(
- swrm_suspend,
- swrm_resume
- )
- SET_RUNTIME_PM_OPS(
- swrm_runtime_suspend,
- swrm_runtime_resume,
- NULL
- )
- };
- static const struct of_device_id swrm_dt_match[] = {
- {
- .compatible = "qcom,swr-wcd",
- },
- {}
- };
- static struct platform_driver swr_mstr_driver = {
- .probe = swrm_probe,
- .remove = swrm_remove,
- .driver = {
- .name = SWR_WCD_NAME,
- .owner = THIS_MODULE,
- .pm = &swrm_dev_pm_ops,
- .of_match_table = swrm_dt_match,
- .suppress_bind_attrs = true,
- },
- };
- static int __init swrm_init(void)
- {
- return platform_driver_register(&swr_mstr_driver);
- }
- module_init(swrm_init);
- static void __exit swrm_exit(void)
- {
- platform_driver_unregister(&swr_mstr_driver);
- }
- module_exit(swrm_exit);
- MODULE_LICENSE("GPL v2");
- MODULE_DESCRIPTION("WCD SoundWire Controller");
- MODULE_ALIAS("platform:swr-wcd");
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