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