58dcb3d121
- LBC supervisor v1..v4 (linux/patches/b10b3-lbc-supervisor-v3.patch + b10/b10b3/lbc-v3-to-v4-fault-clamp.diff): CHARGING 4.20 V/450 mA -> HOLD 4.05 V after 60 min CV -> battery -> new cycle on USB insert; FAULT = VDD_MAX 4.00 V clamp - RAM tests C/B/D/D2/D3/D4 (safety timer only ends fast charge), B10B-4 actuator audit (VDD_MAX works, USB_SUSP does not), B10B-5 FAULT clamp regression, production run, warm reboot via PON reboot reason - cache = B10B-5 c3732515 (HW EDL write, readback + full partition verify), class-A persistent validation - test-only hooks/images are not part of the production kernel; images with the AP PSK are not published
104 lines
3.6 KiB
Diff
104 lines
3.6 KiB
Diff
--- src-b10b3/drivers/power/supply/Kconfig 2026-09-21 19:09:00.000000000 +0600
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+++ src-b10b5/drivers/power/supply/Kconfig 2026-10-04 20:08:07.140000000 +0600
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@@ -768,6 +768,16 @@
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To compile this driver as module, choose M here: the
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module will be called pm8916_lbc.
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+config CHARGER_PM8916_LBC_B10B5_TEST
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+ bool "Aurora B10B-5 TEST-ONLY FAULT injection debugfs"
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+ depends on CHARGER_PM8916_LBC && DEBUG_FS
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+ default n
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+ help
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+ TEST-ONLY (Aurora B10B-5 RAM regression). Adds the write-only debugfs file
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+ pm8916_lbc/b10b5_fault; writing "ovp" makes the next supervisor fault check
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+ take the production OVP FAULT path (FAULT safe clamp) without a real OVP.
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+ Never enable in a production image.
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+
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config CHARGER_BQ2415X
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tristate "TI BQ2415x battery charger driver"
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depends on I2C
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--- /tmp/v4.c 2026-10-04 20:08:07.092000000 +0600
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+++ src-b10b5/drivers/power/supply/pm8916_lbc.c 2026-10-04 20:08:07.140000000 +0600
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@@ -20,6 +20,11 @@
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#include <linux/of.h>
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#include <linux/seq_file.h>
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#include <linux/workqueue.h>
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B5_TEST
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+#include <linux/fs.h>
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+#include <linux/string.h>
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+#include <linux/uaccess.h>
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+#endif
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/* Two bytes: type + subtype */
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#define PM8916_PERPH_TYPE 0x04
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@@ -103,6 +108,9 @@
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struct mutex supv_lock;
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int state;
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int fault_reason;
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B5_TEST
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+ bool test_fault_ovp; /* B10B-5 TEST-ONLY one-shot OVP injection */
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+#endif
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unsigned int hold_uv; /* aurora,hold-voltage-microvolt, 0 = HOLD disabled */
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unsigned int full_min_uv; /* aurora,full-min-voltage-microvolt */
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unsigned int cv_hold_min; /* aurora,cv-hold-minutes */
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@@ -427,6 +435,12 @@
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return lbc_enter_fault(chg, LBC_FAULT_TIMER, "CHG_FAILED (safety timer)");
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if (chg->vbat_uv > PM8916_LBC_SUPV_OVP_UV)
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return lbc_enter_fault(chg, LBC_FAULT_OVP, "vbat > 4.25 V");
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B5_TEST
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+ if (chg->test_fault_ovp) {
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+ chg->test_fault_ovp = false;
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+ return lbc_enter_fault(chg, LBC_FAULT_OVP, "TEST-injected OVP (B10B-5)");
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+ }
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+#endif
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return false;
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}
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@@ -565,6 +579,36 @@
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}
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DEFINE_SHOW_ATTRIBUTE(lbc_state);
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B5_TEST
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+/* B10B-5 TEST-ONLY: "ovp" arms a one-shot OVP condition for the next supervisor fault check (production FAULT path). */
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+static ssize_t lbc_b10b5_fault_write(struct file *file, const char __user *ubuf, size_t len, loff_t *ppos)
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+{
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+ struct pm8916_lbc_charger *chg = file->private_data;
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+ char buf[8];
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+
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+ if (len == 0 || len >= sizeof(buf))
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+ return -EINVAL;
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+ if (copy_from_user(buf, ubuf, len))
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+ return -EFAULT;
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+ buf[len] = 0;
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+ if (strcmp(strim(buf), "ovp"))
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+ return -EINVAL;
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+ mutex_lock(&chg->supv_lock);
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+ chg->test_fault_ovp = true;
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+ mutex_unlock(&chg->supv_lock);
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+ dev_warn(chg->dev, "B10B-5 TEST: OVP FAULT injection armed (state %s)\n", lbc_state_name[chg->state]);
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+ mod_delayed_work(system_freezable_wq, &chg->supv_work, 0);
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+ return len;
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+}
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+
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+static const struct file_operations lbc_b10b5_fault_fops = {
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+ .owner = THIS_MODULE,
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+ .open = simple_open,
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+ .write = lbc_b10b5_fault_write,
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+ .llseek = noop_llseek,
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+};
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+#endif
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+
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static void lbc_debugfs_remove(void *data)
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{
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debugfs_remove_recursive(data);
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@@ -792,6 +836,10 @@
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chg->debugfs = debugfs_create_dir("pm8916_lbc", NULL);
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debugfs_create_file("state", 0444, chg->debugfs, chg, &lbc_state_fops);
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+#ifdef CONFIG_CHARGER_PM8916_LBC_B10B5_TEST
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+ debugfs_create_file("b10b5_fault", 0200, chg->debugfs, chg, &lbc_b10b5_fault_fops);
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+ dev_warn(dev, "B10B-5 TEST-ONLY FAULT injection enabled (debugfs pm8916_lbc/b10b5_fault) - never in production\n");
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+#endif
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ret = devm_add_action_or_reset(dev, lbc_debugfs_remove, chg->debugfs);
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if (ret)
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return ret;
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