summaryrefslogtreecommitdiff
path: root/drivers/net/wwan/t7xx/t7xx_pci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_pci.c')
-rw-r--r--drivers/net/wwan/t7xx/t7xx_pci.c103
1 files changed, 97 insertions, 6 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_pci.c b/drivers/net/wwan/t7xx/t7xx_pci.c
index 91256e005b84..e0b1e7a616ca 100644
--- a/drivers/net/wwan/t7xx/t7xx_pci.c
+++ b/drivers/net/wwan/t7xx/t7xx_pci.c
@@ -52,6 +52,81 @@
#define PM_RESOURCE_POLL_TIMEOUT_US 10000
#define PM_RESOURCE_POLL_STEP_US 100
+static const char * const t7xx_mode_names[] = {
+ [T7XX_UNKNOWN] = "unknown",
+ [T7XX_READY] = "ready",
+ [T7XX_RESET] = "reset",
+ [T7XX_FASTBOOT_SWITCHING] = "fastboot_switching",
+ [T7XX_FASTBOOT_DOWNLOAD] = "fastboot_download",
+ [T7XX_FASTBOOT_DUMP] = "fastboot_dump",
+};
+
+static_assert(ARRAY_SIZE(t7xx_mode_names) == T7XX_MODE_LAST);
+
+static ssize_t t7xx_mode_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct t7xx_pci_dev *t7xx_dev;
+ struct pci_dev *pdev;
+ int index = 0;
+
+ pdev = to_pci_dev(dev);
+ t7xx_dev = pci_get_drvdata(pdev);
+ if (!t7xx_dev)
+ return -ENODEV;
+
+ index = sysfs_match_string(t7xx_mode_names, buf);
+ if (index == T7XX_FASTBOOT_SWITCHING) {
+ WRITE_ONCE(t7xx_dev->mode, T7XX_FASTBOOT_SWITCHING);
+ } else if (index == T7XX_RESET) {
+ WRITE_ONCE(t7xx_dev->mode, T7XX_RESET);
+ t7xx_acpi_pldr_func(t7xx_dev);
+ }
+
+ return count;
+};
+
+static ssize_t t7xx_mode_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ enum t7xx_mode mode = T7XX_UNKNOWN;
+ struct t7xx_pci_dev *t7xx_dev;
+ struct pci_dev *pdev;
+
+ pdev = to_pci_dev(dev);
+ t7xx_dev = pci_get_drvdata(pdev);
+ if (!t7xx_dev)
+ return -ENODEV;
+
+ mode = READ_ONCE(t7xx_dev->mode);
+ if (mode < T7XX_MODE_LAST)
+ return sysfs_emit(buf, "%s\n", t7xx_mode_names[mode]);
+
+ return sysfs_emit(buf, "%s\n", t7xx_mode_names[T7XX_UNKNOWN]);
+}
+
+static DEVICE_ATTR_RW(t7xx_mode);
+
+static struct attribute *t7xx_mode_attr[] = {
+ &dev_attr_t7xx_mode.attr,
+ NULL
+};
+
+static const struct attribute_group t7xx_mode_attribute_group = {
+ .attrs = t7xx_mode_attr,
+};
+
+void t7xx_mode_update(struct t7xx_pci_dev *t7xx_dev, enum t7xx_mode mode)
+{
+ if (!t7xx_dev)
+ return;
+
+ WRITE_ONCE(t7xx_dev->mode, mode);
+ sysfs_notify(&t7xx_dev->pdev->dev.kobj, NULL, "t7xx_mode");
+}
+
enum t7xx_pm_state {
MTK_PM_EXCEPTION,
MTK_PM_INIT, /* Device initialized, but handshake not completed */
@@ -108,7 +183,7 @@ static int t7xx_pci_pm_init(struct t7xx_pci_dev *t7xx_dev)
pm_runtime_set_autosuspend_delay(&pdev->dev, PM_AUTOSUSPEND_MS);
pm_runtime_use_autosuspend(&pdev->dev);
- return t7xx_wait_pm_config(t7xx_dev);
+ return 0;
}
void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev)
@@ -279,7 +354,8 @@ static int __t7xx_pci_pm_suspend(struct pci_dev *pdev)
int ret;
t7xx_dev = pci_get_drvdata(pdev);
- if (atomic_read(&t7xx_dev->md_pm_state) <= MTK_PM_INIT) {
+ if (atomic_read(&t7xx_dev->md_pm_state) <= MTK_PM_INIT ||
+ READ_ONCE(t7xx_dev->mode) != T7XX_READY) {
dev_err(&pdev->dev, "[PM] Exiting suspend, modem in invalid state\n");
return -EFAULT;
}
@@ -729,16 +805,28 @@ static int t7xx_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
t7xx_pcie_mac_interrupts_dis(t7xx_dev);
+ ret = sysfs_create_group(&t7xx_dev->pdev->dev.kobj,
+ &t7xx_mode_attribute_group);
+ if (ret)
+ goto err_md_exit;
+
ret = t7xx_interrupt_init(t7xx_dev);
- if (ret) {
- t7xx_md_exit(t7xx_dev);
- return ret;
- }
+ if (ret)
+ goto err_remove_group;
+
t7xx_pcie_mac_set_int(t7xx_dev, MHCCIF_INT);
t7xx_pcie_mac_interrupts_en(t7xx_dev);
return 0;
+
+err_remove_group:
+ sysfs_remove_group(&t7xx_dev->pdev->dev.kobj,
+ &t7xx_mode_attribute_group);
+
+err_md_exit:
+ t7xx_md_exit(t7xx_dev);
+ return ret;
}
static void t7xx_pci_remove(struct pci_dev *pdev)
@@ -747,6 +835,9 @@ static void t7xx_pci_remove(struct pci_dev *pdev)
int i;
t7xx_dev = pci_get_drvdata(pdev);
+
+ sysfs_remove_group(&t7xx_dev->pdev->dev.kobj,
+ &t7xx_mode_attribute_group);
t7xx_md_exit(t7xx_dev);
for (i = 0; i < EXT_INT_NUM; i++) {