^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) // Copyright(c) 2017-2019 Intel Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/mod_devicetable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/soundwire/sdw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/soundwire/sdw_registers.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "bus.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) static struct dentry *sdw_debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) void sdw_bus_debugfs_init(struct sdw_bus *bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) char name[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) if (!sdw_debugfs_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* create the debugfs master-N */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) snprintf(name, sizeof(name), "master-%d-%d", bus->id, bus->link_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) bus->debugfs = debugfs_create_dir(name, sdw_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) void sdw_bus_debugfs_exit(struct sdw_bus *bus)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) debugfs_remove_recursive(bus->debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define RD_BUF (3 * PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static ssize_t sdw_sprintf(struct sdw_slave *slave,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) char *buf, size_t pos, unsigned int reg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) value = sdw_read(slave, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (value < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return scnprintf(buf + pos, RD_BUF - pos, "%3x\tXX\n", reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return scnprintf(buf + pos, RD_BUF - pos,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) "%3x\t%2x\n", reg, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static int sdw_slave_reg_show(struct seq_file *s_file, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct sdw_slave *slave = s_file->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) char *buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ssize_t ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int i, j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) buf = kzalloc(RD_BUF, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) if (!buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ret = scnprintf(buf, RD_BUF, "Register Value\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /* DP0 non-banked registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) ret += scnprintf(buf + ret, RD_BUF - ret, "\nDP0\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) for (i = SDW_DP0_INT; i <= SDW_DP0_PREPARECTRL; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) ret += sdw_sprintf(slave, buf, ret, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* DP0 Bank 0 registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ret += scnprintf(buf + ret, RD_BUF - ret, "Bank0\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ret += sdw_sprintf(slave, buf, ret, SDW_DP0_CHANNELEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) for (i = SDW_DP0_SAMPLECTRL1; i <= SDW_DP0_LANECTRL; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ret += sdw_sprintf(slave, buf, ret, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* DP0 Bank 1 registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) ret += scnprintf(buf + ret, RD_BUF - ret, "Bank1\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ret += sdw_sprintf(slave, buf, ret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) SDW_DP0_CHANNELEN + SDW_BANK1_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) for (i = SDW_DP0_SAMPLECTRL1 + SDW_BANK1_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) i <= SDW_DP0_LANECTRL + SDW_BANK1_OFFSET; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ret += sdw_sprintf(slave, buf, ret, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* SCP registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ret += scnprintf(buf + ret, RD_BUF - ret, "\nSCP\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) for (i = SDW_SCP_INT1; i <= SDW_SCP_BANKDELAY; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) ret += sdw_sprintf(slave, buf, ret, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) for (i = SDW_SCP_DEVID_0; i <= SDW_SCP_DEVID_5; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) ret += sdw_sprintf(slave, buf, ret, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * SCP Bank 0/1 registers are read-only and cannot be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * retrieved from the Slave. The Master typically keeps track
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * of the current frame size so the information can be found
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * in other places
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) /* DP1..14 registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) for (i = 1; SDW_VALID_PORT_RANGE(i); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* DPi registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) ret += scnprintf(buf + ret, RD_BUF - ret, "\nDP%d\n", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) for (j = SDW_DPN_INT(i); j <= SDW_DPN_PREPARECTRL(i); j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ret += sdw_sprintf(slave, buf, ret, j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /* DPi Bank0 registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) ret += scnprintf(buf + ret, RD_BUF - ret, "Bank0\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) for (j = SDW_DPN_CHANNELEN_B0(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) j <= SDW_DPN_LANECTRL_B0(i); j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ret += sdw_sprintf(slave, buf, ret, j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* DPi Bank1 registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) ret += scnprintf(buf + ret, RD_BUF - ret, "Bank1\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) for (j = SDW_DPN_CHANNELEN_B1(i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) j <= SDW_DPN_LANECTRL_B1(i); j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) ret += sdw_sprintf(slave, buf, ret, j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) seq_printf(s_file, "%s", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) kfree(buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) DEFINE_SHOW_ATTRIBUTE(sdw_slave_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) void sdw_slave_debugfs_init(struct sdw_slave *slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct dentry *master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct dentry *d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) char name[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) master = slave->bus->debugfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) /* create the debugfs slave-name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) snprintf(name, sizeof(name), "%s", dev_name(&slave->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) d = debugfs_create_dir(name, master);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) debugfs_create_file("registers", 0400, d, slave, &sdw_slave_reg_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) slave->debugfs = d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) void sdw_slave_debugfs_exit(struct sdw_slave *slave)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) debugfs_remove_recursive(slave->debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) void sdw_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) sdw_debugfs_root = debugfs_create_dir("soundwire", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) void sdw_debugfs_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) debugfs_remove_recursive(sdw_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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