^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 Power Management
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2014-2019 Xilinx, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Davorin Mista <davorin.mista@aggios.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Jolly Shah <jollys@xilinx.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Rajan Vaja <rajan.vaja@xilinx.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/mailbox_client.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/reboot.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/firmware/xlnx-zynqmp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/mailbox/zynqmp-ipi-message.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * struct zynqmp_pm_work_struct - Wrapper for struct work_struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * @callback_work: Work structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * @args: Callback arguments
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct zynqmp_pm_work_struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct work_struct callback_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) u32 args[CB_ARG_CNT];
^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) static struct zynqmp_pm_work_struct *zynqmp_pm_init_suspend_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static struct mbox_chan *rx_chan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) enum pm_suspend_mode {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) PM_SUSPEND_MODE_FIRST = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) PM_SUSPEND_MODE_STD = PM_SUSPEND_MODE_FIRST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) PM_SUSPEND_MODE_POWER_OFF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define PM_SUSPEND_MODE_FIRST PM_SUSPEND_MODE_STD
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static const char *const suspend_modes[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) [PM_SUSPEND_MODE_STD] = "standard",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) [PM_SUSPEND_MODE_POWER_OFF] = "power-off",
^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 enum pm_suspend_mode suspend_mode = PM_SUSPEND_MODE_STD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) enum pm_api_cb_id {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) PM_INIT_SUSPEND_CB = 30,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) PM_ACKNOWLEDGE_CB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) PM_NOTIFY_CB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static void zynqmp_pm_get_callback_data(u32 *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) zynqmp_pm_invoke_fn(GET_CALLBACK_DATA, 0, 0, 0, 0, buf);
^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) static irqreturn_t zynqmp_pm_isr(int irq, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u32 payload[CB_PAYLOAD_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) zynqmp_pm_get_callback_data(payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* First element is callback API ID, others are callback arguments */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (payload[0] == PM_INIT_SUSPEND_CB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) switch (payload[1]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) case SUSPEND_SYSTEM_SHUTDOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) orderly_poweroff(true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) case SUSPEND_POWER_REQUEST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) pm_suspend(PM_SUSPEND_MEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) pr_err("%s Unsupported InitSuspendCb reason "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) "code %d\n", __func__, payload[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static void ipi_receive_callback(struct mbox_client *cl, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) struct zynqmp_ipi_message *msg = (struct zynqmp_ipi_message *)data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) u32 payload[CB_PAYLOAD_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) memcpy(payload, msg->data, sizeof(msg->len));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /* First element is callback API ID, others are callback arguments */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if (payload[0] == PM_INIT_SUSPEND_CB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (work_pending(&zynqmp_pm_init_suspend_work->callback_work))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /* Copy callback arguments into work's structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) memcpy(zynqmp_pm_init_suspend_work->args, &payload[1],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) sizeof(zynqmp_pm_init_suspend_work->args));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) queue_work(system_unbound_wq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) &zynqmp_pm_init_suspend_work->callback_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) /* Send NULL message to mbox controller to ack the message */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ret = mbox_send_message(rx_chan, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) pr_err("IPI ack failed. Error %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * zynqmp_pm_init_suspend_work_fn - Initialize suspend
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * @work: Pointer to work_struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * Bottom-half of PM callback IRQ handler.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static void zynqmp_pm_init_suspend_work_fn(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct zynqmp_pm_work_struct *pm_work =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) container_of(work, struct zynqmp_pm_work_struct, callback_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (pm_work->args[0] == SUSPEND_SYSTEM_SHUTDOWN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) orderly_poweroff(true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) } else if (pm_work->args[0] == SUSPEND_POWER_REQUEST) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) pm_suspend(PM_SUSPEND_MEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) pr_err("%s Unsupported InitSuspendCb reason code %d.\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) __func__, pm_work->args[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static ssize_t suspend_mode_show(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) char *s = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) int md;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) for (md = PM_SUSPEND_MODE_FIRST; md < ARRAY_SIZE(suspend_modes); md++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) if (suspend_modes[md]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) if (md == suspend_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) s += sprintf(s, "[%s] ", suspend_modes[md]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) s += sprintf(s, "%s ", suspend_modes[md]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /* Convert last space to newline */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (s != buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) *(s - 1) = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) return (s - buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) static ssize_t suspend_mode_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) int md, ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) for (md = PM_SUSPEND_MODE_FIRST; md < ARRAY_SIZE(suspend_modes); md++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) if (suspend_modes[md] &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) sysfs_streq(suspend_modes[md], buf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (!ret && md != suspend_mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) ret = zynqmp_pm_set_suspend_mode(md);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) if (likely(!ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) suspend_mode = md;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static DEVICE_ATTR_RW(suspend_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static int zynqmp_pm_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) int ret, irq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) u32 pm_api_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct mbox_client *client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) zynqmp_pm_init_finalize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) zynqmp_pm_get_api_version(&pm_api_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /* Check PM API version number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (pm_api_version < ZYNQMP_PM_VERSION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (of_find_property(pdev->dev.of_node, "mboxes", NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) zynqmp_pm_init_suspend_work =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) devm_kzalloc(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) sizeof(struct zynqmp_pm_work_struct),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (!zynqmp_pm_init_suspend_work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) INIT_WORK(&zynqmp_pm_init_suspend_work->callback_work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) zynqmp_pm_init_suspend_work_fn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) client = devm_kzalloc(&pdev->dev, sizeof(*client), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) if (!client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) client->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) client->rx_callback = ipi_receive_callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) rx_chan = mbox_request_channel_byname(client, "rx");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) if (IS_ERR(rx_chan)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) dev_err(&pdev->dev, "Failed to request rx channel\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return PTR_ERR(rx_chan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) } else if (of_find_property(pdev->dev.of_node, "interrupts", NULL)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (irq <= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) zynqmp_pm_isr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) IRQF_NO_SUSPEND | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) dev_name(&pdev->dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) &pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) dev_err(&pdev->dev, "devm_request_threaded_irq '%d' "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) "failed with %d\n", irq, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) dev_err(&pdev->dev, "Required property not found in DT node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_suspend_mode.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) dev_err(&pdev->dev, "unable to create sysfs interface\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static int zynqmp_pm_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) sysfs_remove_file(&pdev->dev.kobj, &dev_attr_suspend_mode.attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (!rx_chan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) mbox_free_channel(rx_chan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) static const struct of_device_id pm_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) { .compatible = "xlnx,zynqmp-power", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) { /* end of table */ },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) MODULE_DEVICE_TABLE(of, pm_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static struct platform_driver zynqmp_pm_platform_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) .probe = zynqmp_pm_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) .remove = zynqmp_pm_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) .name = "zynqmp_power",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .of_match_table = pm_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) module_platform_driver(zynqmp_pm_platform_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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