^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Xilinx Zynq MPSoC Firmware layer for debugfs APIs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2014-2018 Xilinx, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Michal Simek <michal.simek@xilinx.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Davorin Mista <davorin.mista@aggios.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Jolly Shah <jollys@xilinx.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Rajan Vaja <rajanv@xilinx.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/firmware/xlnx-zynqmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "zynqmp-debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define PM_API_NAME_LEN 50
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct pm_api_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) u32 api_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) char api_name[PM_API_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) char api_name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static char debugfs_buf[PAGE_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define PM_API(id) {id, #id, strlen(#id)}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) static struct pm_api_info pm_api_list[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) PM_API(PM_GET_API_VERSION),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) PM_API(PM_QUERY_DATA),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static struct dentry *firmware_debugfs_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * zynqmp_pm_argument_value() - Extract argument value from a PM-API request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @arg: Entered PM-API argument in string format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * Return: Argument value in unsigned integer format on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * 0 otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static u64 zynqmp_pm_argument_value(char *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u64 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) if (!arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (!kstrtou64(arg, 0, &value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * get_pm_api_id() - Extract API-ID from a PM-API request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * @pm_api_req: Entered PM-API argument in string format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * @pm_id: API-ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * Return: 0 on success else error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static int get_pm_api_id(char *pm_api_req, u32 *pm_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) for (i = 0; i < ARRAY_SIZE(pm_api_list) ; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (!strncasecmp(pm_api_req, pm_api_list[i].api_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) pm_api_list[i].api_name_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) *pm_id = pm_api_list[i].api_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) /* If no name was entered look for PM-API ID instead */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (i == ARRAY_SIZE(pm_api_list) && kstrtouint(pm_api_req, 10, pm_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static int process_api_request(u32 pm_id, u64 *pm_api_arg, u32 *pm_api_ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) u32 pm_api_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct zynqmp_pm_query_data qdata = {0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) switch (pm_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) case PM_GET_API_VERSION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) ret = zynqmp_pm_get_api_version(&pm_api_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) sprintf(debugfs_buf, "PM-API Version = %d.%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) pm_api_version >> 16, pm_api_version & 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) case PM_QUERY_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) qdata.qid = pm_api_arg[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) qdata.arg1 = pm_api_arg[1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) qdata.arg2 = pm_api_arg[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) qdata.arg3 = pm_api_arg[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ret = zynqmp_pm_query_data(qdata, pm_api_ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) switch (qdata.qid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) case PM_QID_CLOCK_GET_NAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) sprintf(debugfs_buf, "Clock name = %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) (char *)pm_api_ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) case PM_QID_CLOCK_GET_FIXEDFACTOR_PARAMS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) sprintf(debugfs_buf, "Multiplier = %d, Divider = %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) pm_api_ret[1], pm_api_ret[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) sprintf(debugfs_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) "data[0] = 0x%08x\ndata[1] = 0x%08x\n data[2] = 0x%08x\ndata[3] = 0x%08x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) pm_api_ret[0], pm_api_ret[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) pm_api_ret[2], pm_api_ret[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) sprintf(debugfs_buf, "Unsupported PM-API request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * zynqmp_pm_debugfs_api_write() - debugfs write function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @file: User file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @ptr: User entered PM-API string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @len: Length of the userspace buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * @off: Offset within the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * Used for triggering pm api functions by writing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * echo <pm_api_id> > /sys/kernel/debug/zynqmp_pm/power or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * echo <pm_api_name> > /sys/kernel/debug/zynqmp_pm/power
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * Return: Number of bytes copied if PM-API request succeeds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * the corresponding error code otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static ssize_t zynqmp_pm_debugfs_api_write(struct file *file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) const char __user *ptr, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) loff_t *off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) char *kern_buff, *tmp_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) char *pm_api_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) u32 pm_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) u64 pm_api_arg[4] = {0, 0, 0, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* Return values from PM APIs calls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) u32 pm_api_ret[4] = {0, 0, 0, 0};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) strcpy(debugfs_buf, "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (*off != 0 || len <= 1 || len > PAGE_SIZE - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) kern_buff = memdup_user_nul(ptr, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (IS_ERR(kern_buff))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) return PTR_ERR(kern_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) tmp_buff = kern_buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /* Read the API name from a user request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) pm_api_req = strsep(&kern_buff, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) ret = get_pm_api_id(pm_api_req, &pm_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) /* Read node_id and arguments from the PM-API request */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) pm_api_req = strsep(&kern_buff, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) while ((i < ARRAY_SIZE(pm_api_arg)) && pm_api_req) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) pm_api_arg[i++] = zynqmp_pm_argument_value(pm_api_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) pm_api_req = strsep(&kern_buff, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) ret = process_api_request(pm_id, pm_api_arg, pm_api_ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) kfree(tmp_buff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * zynqmp_pm_debugfs_api_read() - debugfs read function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @file: User file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * @ptr: Requested pm_api_version string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * @len: Length of the userspace buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * @off: Offset within the file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Return: Length of the version string on success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * else error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static ssize_t zynqmp_pm_debugfs_api_read(struct file *file, char __user *ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) size_t len, loff_t *off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) return simple_read_from_buffer(ptr, len, off, debugfs_buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) strlen(debugfs_buf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /* Setup debugfs fops */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static const struct file_operations fops_zynqmp_pm_dbgfs = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) .write = zynqmp_pm_debugfs_api_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) .read = zynqmp_pm_debugfs_api_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * zynqmp_pm_api_debugfs_init - Initialize debugfs interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * Return: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) void zynqmp_pm_api_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) /* Initialize debugfs interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) firmware_debugfs_root = debugfs_create_dir("zynqmp-firmware", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) debugfs_create_file("pm", 0660, firmware_debugfs_root, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) &fops_zynqmp_pm_dbgfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * zynqmp_pm_api_debugfs_exit - Remove debugfs interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * Return: None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) void zynqmp_pm_api_debugfs_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) debugfs_remove_recursive(firmware_debugfs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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